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17
nodemcuv2/lv_arduino/.github/stale.yml vendored Normal file
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# Number of days of inactivity before an issue becomes stale
daysUntilStale: 21
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# Prerequisites
*.d
# Object files
*.o
*.ko
*.obj
*.elf
# Linker output
*.ilk
*.map
*.exp
# Precompiled Headers
*.gch
*.pch
# Libraries
*.lib
*.a
*.la
*.lo
# Shared objects (inc. Windows DLLs)
*.dll
*.so
*.so.*
*.dylib
# Executables
*.exe
*.out
*.app
*.i*86
*.x86_64
*.hex
# Debug files
*.dSYM/
*.su
*.idb
*.pdb
# Kernel Module Compile Results
*.mod*
*.cmd
.tmp_versions/
modules.order
Module.symvers
Mkfile.old
dkms.conf

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nodemcuv2/lv_arduino/.piopm Normal file
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{"type": "library", "name": "lv_arduino", "version": "3.0.1", "spec": {"owner": "lvgl", "id": 6228, "name": "lv_arduino", "requirements": null, "uri": null}}

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nodemcuv2/lv_arduino/LICENSE Normal file
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MIT License
Copyright (c) 2019 Littlev Graphics Library
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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nodemcuv2/lv_arduino/README.md Normal file
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# LVGL Arduino library
This library allows to use LVGL (v7.0.x) as an Arduino library. Library can be installed via Arduino IDE Library Manager or as an .ZIP library.
## Example
There is simple example which uses https://github.com/Bodmer/TFT_eSPI library as an TFT driver to simplify testing. To get all this to work you have to setup TFT_eSPI to work with your TFT display type via editing the `User_Setup.h` file in TFT_eSPI library folder, or by selecting your own configurtion in the `User_Setup_Select.h` file in TFT_eSPI library folder.
LittlevGL library has its own configuration file in `lv_conf.h` file, which is locatd in LittlevGL library folder. Please get in mind to check that the corresponding resolutions in LVGL configuration match the ones in TFT_eSPI and with the physical resolution of your display.
Example result should look like this:
![LVGL Arduino example result](extras/img/lvglarduino.jpg)
Tested with:
* My own ESP32 board, module ESP32 Wroom
* PC OS: Linux, Ubuntu 20.04 LTS
* IDE: Arduino IDE 1.8.12
* ESP32 Core: 1.0.4
## Debugging
In case of trouble there are debug informations inside LVGL. In the `ESP32_TFT_eSPI` example there is `my_print` method, which allow to send this debug informations to the serial interface. To enable this feature you have to edit `lv_conf.h` file and enable logging in section `log settings`:
```c
/*Log settings*/
#define USE_LV_LOG 1 /*Enable/disable the log module*/
#if LV_USE_LOG
/* How important log should be added:
* LV_LOG_LEVEL_TRACE A lot of logs to give detailed information
* LV_LOG_LEVEL_INFO Log important events
* LV_LOG_LEVEL_WARN Log if something unwanted happened but didn't cause a problem
* LV_LOG_LEVEL_ERROR Only critical issue, when the system may fail
* LV_LOG_LEVEL_NONE Do not log anything
*/
# define LV_LOG_LEVEL LV_LOG_LEVEL_WARN
```
After enabling log module and setting LV_LOG_LEVEL accordingly the output log is sent to the `Serial` port @ 115200 Bd.

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nodemcuv2/lv_arduino/examples/ESP32_TFT_eSPI/ESP32_TFT_eSPI.ino Normal file
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#include <lvgl.h>
#include <TFT_eSPI.h>
TFT_eSPI tft = TFT_eSPI(); /* TFT instance */
static lv_disp_buf_t disp_buf;
static lv_color_t buf[LV_HOR_RES_MAX * 10];
#if USE_LV_LOG != 0
/* Serial debugging */
void my_print(lv_log_level_t level, const char * file, uint32_t line, const char * dsc)
{
Serial.printf("%s@%d->%s\r\n", file, line, dsc);
Serial.flush();
}
#endif
/* Display flushing */
void my_disp_flush(lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p)
{
uint32_t w = (area->x2 - area->x1 + 1);
uint32_t h = (area->y2 - area->y1 + 1);
tft.startWrite();
tft.setAddrWindow(area->x1, area->y1, w, h);
tft.pushColors(&color_p->full, w * h, true);
tft.endWrite();
lv_disp_flush_ready(disp);
}
/* Reading input device (simulated encoder here) */
bool read_encoder(lv_indev_drv_t * indev, lv_indev_data_t * data)
{
static int32_t last_diff = 0;
int32_t diff = 0; /* Dummy - no movement */
int btn_state = LV_INDEV_STATE_REL; /* Dummy - no press */
data->enc_diff = diff - last_diff;;
data->state = btn_state;
last_diff = diff;
return false;
}
void setup()
{
Serial.begin(115200); /* prepare for possible serial debug */
lv_init();
#if USE_LV_LOG != 0
lv_log_register_print_cb(my_print); /* register print function for debugging */
#endif
tft.begin(); /* TFT init */
tft.setRotation(1); /* Landscape orientation */
lv_disp_buf_init(&disp_buf, buf, NULL, LV_HOR_RES_MAX * 10);
/*Initialize the display*/
lv_disp_drv_t disp_drv;
lv_disp_drv_init(&disp_drv);
disp_drv.hor_res = 320;
disp_drv.ver_res = 240;
disp_drv.flush_cb = my_disp_flush;
disp_drv.buffer = &disp_buf;
lv_disp_drv_register(&disp_drv);
/*Initialize the (dummy) input device driver*/
lv_indev_drv_t indev_drv;
lv_indev_drv_init(&indev_drv);
indev_drv.type = LV_INDEV_TYPE_ENCODER;
indev_drv.read_cb = read_encoder;
lv_indev_drv_register(&indev_drv);
/* Create simple label */
lv_obj_t *label = lv_label_create(lv_scr_act(), NULL);
lv_label_set_text(label, "Hello Arduino! (V7.0.X)");
lv_obj_align(label, NULL, LV_ALIGN_CENTER, 0, 0);
}
void loop()
{
lv_task_handler(); /* let the GUI do its work */
delay(5);
}

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nodemcuv2/lv_arduino/examples/ESP32_TFT_eSPI_Slider/Callbacks.ino Normal file
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void slider_event_cb(lv_obj_t * slider, lv_event_t event)
{
printEvent("Slider", event);
if(event == LV_EVENT_VALUE_CHANGED) {
static char buf[4]; /* max 3 bytes for number plus 1 null terminating byte */
snprintf(buf, 4, "%u", lv_slider_get_value(slider));
lv_label_set_text(slider_label, buf); /*Refresh the text*/
}
}
void printEvent(String Event, lv_event_t event)
{
Serial.print(Event);
printf(" ");
switch(event) {
case LV_EVENT_PRESSED:
printf("Pressed\n");
break;
case LV_EVENT_SHORT_CLICKED:
printf("Short clicked\n");
break;
case LV_EVENT_CLICKED:
printf("Clicked\n");
break;
case LV_EVENT_LONG_PRESSED:
printf("Long press\n");
break;
case LV_EVENT_LONG_PRESSED_REPEAT:
printf("Long press repeat\n");
break;
case LV_EVENT_RELEASED:
printf("Released\n");
break;
}
}

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nodemcuv2/lv_arduino/examples/ESP32_TFT_eSPI_Slider/ESP32_TFT_eSPI_Slider.ino Normal file
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#include <lvgl.h>
#include <TFT_eSPI.h>
#define LVGL_TICK_PERIOD 60
//Ticker tick; /* timer for interrupt handler */
TFT_eSPI tft = TFT_eSPI(); /* TFT instance */
static lv_disp_buf_t disp_buf;
static lv_color_t buf[LV_HOR_RES_MAX * 10];
lv_obj_t * slider_label;
int screenWidth = 480;
int screenHeight = 320;
#if USE_LV_LOG != 0
/* Serial debugging */
void my_print(lv_log_level_t level, const char * file, uint32_t line, const char * dsc)
{
Serial.printf("%s@%d->%s\r\n", file, line, dsc);
delay(100);
}
#endif
/* Display flushing */
void my_disp_flush(lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p)
{
uint16_t c;
tft.startWrite(); /* Start new TFT transaction */
tft.setAddrWindow(area->x1, area->y1, (area->x2 - area->x1 + 1), (area->y2 - area->y1 + 1)); /* set the working window */
for (int y = area->y1; y <= area->y2; y++) {
for (int x = area->x1; x <= area->x2; x++) {
c = color_p->full;
tft.writeColor(c, 1);
color_p++;
}
}
tft.endWrite(); /* terminate TFT transaction */
lv_disp_flush_ready(disp); /* tell lvgl that flushing is done */
}
bool my_touchpad_read(lv_indev_drv_t * indev_driver, lv_indev_data_t * data)
{
uint16_t touchX, touchY;
bool touched = tft.getTouch(&touchX, &touchY, 600);
if(!touched)
{
return false;
}
if(touchX>screenWidth || touchY > screenHeight)
{
Serial.println("Y or y outside of expected parameters..");
Serial.print("y:");
Serial.print(touchX);
Serial.print(" x:");
Serial.print(touchY);
}
else
{
data->state = touched ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL;
/*Save the state and save the pressed coordinate*/
//if(data->state == LV_INDEV_STATE_PR) touchpad_get_xy(&last_x, &last_y);
/*Set the coordinates (if released use the last pressed coordinates)*/
data->point.x = touchX;
data->point.y = touchY;
Serial.print("Data x");
Serial.println(touchX);
Serial.print("Data y");
Serial.println(touchY);
}
return false; /*Return `false` because we are not buffering and no more data to read*/
}

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nodemcuv2/lv_arduino/examples/ESP32_TFT_eSPI_Slider/Loop.ino Normal file
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void loop() {
lv_task_handler(); /* let the GUI do its work */
delay(5);
}

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nodemcuv2/lv_arduino/examples/ESP32_TFT_eSPI_Slider/Readme.md Normal file
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# Example for lv_arduino using a slider
This example has the screen set to 320x480 (ILI9488), change this by altering the following lines in the main ino file:
```C
int screenWidth = 480;
int screenHeight = 320;
```
## Backlight
Change pin 32 to your preferred backlight pin using a PNP transistor (2N3906) or remove the following code and connect directly to +ve:
```C
ledcSetup(10, 5000/*freq*/, 10 /*resolution*/);
ledcAttachPin(32, 10);
analogReadResolution(10);
ledcWrite(10,768);
```
## Theme selection
Change the following to change the theme:
```C
lv_theme_t * th = lv_theme_night_init(210, NULL); //Set a HUE value and a Font for the Night Theme
lv_theme_set_current(th);
```
## Calibration
This is using the bodmer tft_espi driver for touch. To correctly set the calibration load the calibration sketch and replace the following with your values:
```C
uint16_t calData[5] = { 275, 3620, 264, 3532, 1 };
```
## Screen rotation
Check the following if you need to alter your screen rotation:
```C
tft.setRotation(3);
```

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nodemcuv2/lv_arduino/examples/ESP32_TFT_eSPI_Slider/Setup.ino Normal file
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void setup() {
ledcSetup(10, 5000/*freq*/, 10 /*resolution*/);
ledcAttachPin(32, 10);
analogReadResolution(10);
ledcWrite(10,768);
Serial.begin(115200); /* prepare for possible serial debug */
lv_init();
#if USE_LV_LOG != 0
lv_log_register_print_cb(my_print); /* register print function for debugging */
#endif
tft.begin(); /* TFT init */
tft.setRotation(3);
uint16_t calData[5] = { 275, 3620, 264, 3532, 1 };
tft.setTouch(calData);
lv_disp_buf_init(&disp_buf, buf, NULL, LV_HOR_RES_MAX * 10);
/*Initialize the display*/
lv_disp_drv_t disp_drv;
lv_disp_drv_init(&disp_drv);
disp_drv.hor_res = screenWidth;
disp_drv.ver_res = screenHeight;
disp_drv.flush_cb = my_disp_flush;
disp_drv.buffer = &disp_buf;
lv_disp_drv_register(&disp_drv);
/*Initialize the input device driver*/
lv_indev_drv_t indev_drv;
lv_indev_drv_init(&indev_drv); /*Descriptor of a input device driver*/
indev_drv.type = LV_INDEV_TYPE_POINTER; /*Touch pad is a pointer-like device*/
indev_drv.read_cb = my_touchpad_read; /*Set your driver function*/
lv_indev_drv_register(&indev_drv); /*Finally register the driver*/
//Set the theme..
lv_theme_t * th = lv_theme_material_init(LV_THEME_DEFAULT_COLOR_PRIMARY, LV_THEME_DEFAULT_COLOR_SECONDARY, LV_THEME_DEFAULT_FLAG, LV_THEME_DEFAULT_FONT_SMALL , LV_THEME_DEFAULT_FONT_NORMAL, LV_THEME_DEFAULT_FONT_SUBTITLE, LV_THEME_DEFAULT_FONT_TITLE);
lv_theme_set_act(th);
lv_obj_t * scr = lv_cont_create(NULL, NULL);
lv_disp_load_scr(scr);
//lv_obj_t * tv = lv_tabview_create(scr, NULL);
//lv_obj_set_size(tv, lv_disp_get_hor_res(NULL), lv_disp_get_ver_res(NULL));
/* Create simple label */
lv_obj_t *label = lv_label_create(lv_scr_act(), NULL);
lv_label_set_text(label, "Hello Arduino! (V7.0)");
lv_obj_align(label, NULL, LV_ALIGN_CENTER, 0, -50);
/* Create a slider in the center of the display */
lv_obj_t * slider = lv_slider_create(lv_scr_act(), NULL);
lv_obj_set_width(slider, screenWidth-50); /*Set the width*/
lv_obj_set_height(slider, 50);
lv_obj_align(slider, NULL, LV_ALIGN_CENTER, 0, 0); /*Align to the center of the parent (screen)*/
lv_obj_set_event_cb(slider, slider_event_cb); /*Assign an event function*/
/* Create a label below the slider */
slider_label = lv_label_create(lv_scr_act(), NULL);
lv_label_set_text(slider_label, "0");
lv_obj_set_auto_realign(slider, true);
lv_obj_align(slider_label, slider, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);
}

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nodemcuv2/lv_arduino/examples/STM32_TFT_eSPI_Slider/Readme.md Normal file
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Littlevgl on STM32F103C BluePill and ILI9341 in 8-Bit Parallel with XPT2046 Touch-pad on SPI2 port.
Which able to dim an LED attached to PB6 Pin (thru 100to330 ohm series resistor from GND) by adjusting the slider.
Library dependencies:
1. TFT_eSPI https://github.com/Bodmer/TFT_eSPI
and choosing the right setup inside User_Setup_Select.h and also set right pins on selected user file.
2. TFT_eTouch.h https://github.com/achillhasler/TFT_eTouch
and set the right pins inside TFT_eTouchUser.h and also run calibrate.ino to get the calibration value and store it inside
TFT_eTouchUser.h like ` #define TOUCH_DEFAULT_CALIBRATION { 294, 3913, 339, 3869, 2 }`
Note that TFT_eSPI touch include extension does nether support second SPI port nor touch in parallel mode.
3. Installing the last master Arduino_Core_STM32 on https://github.com/stm32duino/Arduino_Core_STM32
because the Hardwaretimer definitions changed a bit in 1.9.0 version which about to release.
4. lv_arduino https://github.com/littlevgl/lv_arduino
and config the lv_conf.h eg:
```C++
#define LV_HOR_RES_MAX (320)
#define LV_VER_RES_MAX (240)
#define LV_USE_THEME_NIGHT 1 /*Dark elegant theme*/
#define LV_MEM_CUSTOM 1 // otherwise occupied 32k buffer of RAM
```
![Example](https://github.com/HamidSaffari/lv_arduino/blob/master/examples/STM32_TFT_eSPI_Slider/photo_2020-04-02_01-55-36.jpg)
EDIT: Since lvgl updated to 7.0.1 the program no longer fits inside STM32F103CB so you have to go to larger like STM32F103RC.
Created by Hamid Saffari @ Apr 2020. https://github.com/HamidSaffari/
Released into the public domain.

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nodemcuv2/lv_arduino/examples/STM32_TFT_eSPI_Slider/STM32_TFT_eSPI_Slider.ino Normal file
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//Created by Hamid Saffari @ Apr 2020. https://github.com/HamidSaffari/ Released into the public domain.
#include <SPI.h>
#include <lvgl.h>
#include <TFT_eSPI.h>
#include <TFT_eTouch.h> // https://github.com/achillhasler/TFT_eTouch
/* using TFT_eTouch.h : 106860 bytes (81%) FALSH, 13432 bytes (65%) RAM
using TFT_eSPI.h touch include : 105096 bytes (80%) FALSH, 13392 bytes (65%) RAM
*/
#define LED_PIN PB6
TFT_eSPI tft = TFT_eSPI(); /* TFT instance */
static lv_disp_buf_t disp_buf;
static lv_color_t buf[LV_HOR_RES_MAX * 10];
//TFT_eTouch<TFT_eSPI> touch(tft, TFT_ETOUCH_CS, 0xff, TFT_eSPI::getSPIinstance());
SPIClass spi_touch(PB15, PB14, PB13);// SPIClass SPITwo(PB15, PB14, PB13); (MOSI, MISO, CLK)
TFT_eTouch<TFT_eSPI> touch(tft, TFT_ETOUCH_CS, TFT_ETOUCH_PIRQ, spi_touch);
lv_obj_t * slider_label;
int screenWidth = 320;
int screenHeight = 240;
/* By Bodmer in https://github.com/Bodmer/TFT_eSPI/issues/581
faster and more efficient than previous one: */
void my_disp_flush(lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p)
{
uint32_t w = (area->x2 - area->x1 + 1);
uint32_t h = (area->y2 - area->y1 + 1);
tft.startWrite();
#ifdef USE_DMA
tft.pushImageDMA(area->x1, area->y1, w, h, &color_p->full);
// Note: tft.endWrite(); must be called in my_lv_tick_handler when DMA is complete
#else
tft.setAddrWindow(area->x1, area->y1, w, h);
tft.pushColors(&color_p->full, w * h, true);
tft.endWrite();
#endif
lv_disp_flush_ready(disp);
}
bool my_touchpad_read(lv_indev_drv_t * indev_driver, lv_indev_data_t * data)
{
int16_t touchX, touchY;
bool touched = touch.getXY(touchX, touchY); // bool TFT_eTouch<T>::getXY(int16_t& x, int16_t& y)
if(!touched)
{
return false;
}
if(touchX>screenWidth || touchY > screenHeight)
{
Serial.println("Y or y outside of expected parameters..");
Serial.print("y:");
Serial.print(touchX);
Serial.print(" x:");
Serial.print(touchY);
}
else
{
data->state = touched ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL;
/*Save the state and save the pressed coordinate*/
//if(data->state == LV_INDEV_STATE_PR) touchpad_get_xy(&last_x, &last_y);
/*Set the coordinates (if released use the last pressed coordinates)*/
data->point.x = touchX;
data->point.y = touchY;
Serial.print("Data x");
Serial.println(touchX);
Serial.print("Data y");
Serial.println(touchY);
}
return false; /*Return `false` because we are not buffering and no more data to read*/
}
void slider_event_cb(lv_obj_t * slider, lv_event_t event)
{
printEvent("Slider", event);
if(event == LV_EVENT_VALUE_CHANGED) {
static char buf[4]; /* max 3 bytes for number plus 1 null terminating byte */
snprintf(buf, 4, "%u", lv_slider_get_value(slider));
lv_label_set_text(slider_label, buf); /*Refresh the text*/
int16_t value = lv_slider_get_value(slider);
value = map(value, 0, 100, 0, 255);
//analogWriteFrequency(2000); // Set PMW period to 2000 Hz instead of 1000
analogWrite(LED_PIN, value);//8-bit by default
}
}
void printEvent(String Event, lv_event_t event)
{
Serial.print(Event);
Serial.printf(" ");
switch(event) {
case LV_EVENT_PRESSED:
Serial.printf("Pressed\n");
break;
case LV_EVENT_SHORT_CLICKED:
Serial.printf("Short clicked\n");
break;
case LV_EVENT_CLICKED:
Serial.printf("Clicked\n");
break;
case LV_EVENT_LONG_PRESSED:
Serial.printf("Long press\n");
break;
case LV_EVENT_LONG_PRESSED_REPEAT:
Serial.printf("Long press repeat\n");
break;
case LV_EVENT_RELEASED:
Serial.printf("Released\n");
break;
}
}
void setup() {
Serial.begin(115200); /* prepare for possible serial debug */
pinMode(LED_PIN, OUTPUT);
lv_init();
tft.begin(); /* TFT init */
tft.setRotation(1);
spi_touch.begin();
touch.init();
/* @brief set measure
* @param drop_first ignore first n measures
* @param z_once read z1 and z2 only once. When this flag is true z_first must be also true.
* @param z_first when true start measure with Z1 otherwise with X
* @param z_local_min when true, get local minimum of RZ
* @param count how many values used by averaging or witch measure is taken. 0 means read until measure is equal last measure
*
* inline void setMeasure(uint8_t drop_first = 0, bool z_once = false, bool z_first = false, bool z_local_min = false, uint8_t count = 0);
*/
touch.setMeasure(0, false, true, false, 2); // z first, take 2'th z,x,y // untouched: 35 us touched: 95 us
//touch.setMeasure(0, true, true, false, 1); // Differential mode fastest (each axis read only once, may work)
//touch.setAcurateDistance(25); // in this mode acurate distance must be higher for getUserCalibration (default 10)
lv_disp_buf_init(&disp_buf, buf, NULL, LV_HOR_RES_MAX * 10);
/*Initialize the display*/
lv_disp_drv_t disp_drv;
lv_disp_drv_init(&disp_drv);
disp_drv.hor_res = screenWidth;
disp_drv.ver_res = screenHeight;
disp_drv.flush_cb = my_disp_flush;
disp_drv.buffer = &disp_buf;
lv_disp_drv_register(&disp_drv);
lv_indev_drv_t indev_drv;
lv_indev_drv_init(&indev_drv); /*Descriptor of a input device driver*/
indev_drv.type = LV_INDEV_TYPE_POINTER; /*Touch pad is a pointer-like device*/
indev_drv.read_cb = my_touchpad_read; /*Set your driver function*/
lv_indev_drv_register(&indev_drv); /*Finally register the driver*/
//Set the theme..
//lv_theme_t * th = lv_theme_night_init(210, NULL); //Set a HUE value and a Font for the Night Theme
//lv_theme_set_current(th);
lv_obj_t * scr = lv_cont_create(NULL, NULL);
lv_disp_load_scr(scr);
//lv_obj_t * tv = lv_tabview_create(scr, NULL);
//lv_obj_set_size(tv, lv_disp_get_hor_res(NULL), lv_disp_get_ver_res(NULL));
/* Create simple label */
lv_obj_t *label = lv_label_create(lv_scr_act(), NULL);
lv_label_set_text(label, "PB6 LED DIMMER");
lv_obj_align(label, NULL, LV_ALIGN_CENTER, 0, -50);
/* Create a slider in the center of the display */
lv_obj_t * slider = lv_slider_create(lv_scr_act(), NULL);
lv_obj_set_width(slider, screenWidth-50); /*Set the width*/
lv_obj_set_height(slider, 50);
lv_obj_align(slider, NULL, LV_ALIGN_CENTER, 0, 0); /*Align to the center of the parent (screen)*/
lv_obj_set_event_cb(slider, slider_event_cb); /*Assign an event function*/
/* Create a label below the slider */
slider_label = lv_label_create(lv_scr_act(), NULL);
lv_label_set_text(slider_label, "0");
lv_obj_set_auto_realign(slider, true);
lv_obj_align(slider_label, slider, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);
}
void loop() {
lv_task_handler(); /* let the GUI do its work */
delay(5);
}

19
nodemcuv2/lv_arduino/keywords.txt Normal file
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#######################################
# Syntax Coloring Map LowPower
#######################################
#######################################
# Datatypes (KEYWORD1)
#######################################
#######################################
# Methods and Functions (KEYWORD2)
#######################################
#######################################
# Instances (KEYWORD2)
#######################################
#######################################
# Constants (LITERAL1)
#######################################

21
nodemcuv2/lv_arduino/library.json Normal file
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{
"name":"lv_arduino",
"description":"Full-featured Graphics Library for embedded systems",
"keywords":"display,gui",
"authors":
{
"name": "Gabor Kiss-Vamosi",
"maintainer": true
},
"repository":
{
"type": "git",
"url": "https://github.com/lvgl/lv_arduino"
},
"version": "3.0.1",
"license": "MIT",
"frameworks": "arduino",
"build": {
"libCompatMode": "strict"
}
}

10
nodemcuv2/lv_arduino/library.properties Normal file
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name=lv_arduino
version=3.0.1
author=Gabor Kiss-Vamosi
maintainer=Pavel Brychta <pablo@xpablo.cz>
sentence=Full-featured Graphics Library for embedded systems
paragraph=Littlev Graphics Library provides everything you need to create a Graphical User Interface (GUI) on embedded systems with easy-to-use graphical elements, beautiful visual effects and low memory footprint.
category=Display
url=https://lvgl.io
architectures=*
includes=lvgl.h

708
nodemcuv2/lv_arduino/lv_conf.h Normal file
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/**
* @file lv_conf.h
*
*/
/*
* COPY THIS FILE AS `lv_conf.h` NEXT TO the `lvgl` FOLDER
*/
#if 1 /*Set it to "1" to enable content*/
#ifndef LV_CONF_H
#define LV_CONF_H
/* clang-format off */
#include <stdint.h>
/*====================
Graphical settings
*====================*/
/* Maximal horizontal and vertical resolution to support by the library.*/
#define LV_HOR_RES_MAX (240)
#define LV_VER_RES_MAX (240)
/* Color depth:
* - 1: 1 byte per pixel
* - 8: RGB233
* - 16: RGB565
* - 32: ARGB8888
*/
#define LV_COLOR_DEPTH 16
/* Swap the 2 bytes of RGB565 color.
* Useful if the display has a 8 bit interface (e.g. SPI)*/
#define LV_COLOR_16_SWAP 0
/* 1: Enable screen transparency.
* Useful for OSD or other overlapping GUIs.
* Requires `LV_COLOR_DEPTH = 32` colors and the screen's style should be modified: `style.body.opa = ...`*/
#define LV_COLOR_SCREEN_TRANSP 0
/*Images pixels with this color will not be drawn (with chroma keying)*/
#define LV_COLOR_TRANSP LV_COLOR_LIME /*LV_COLOR_LIME: pure green*/
/* Enable anti-aliasing (lines, and radiuses will be smoothed) */
#define LV_ANTIALIAS 1
/* Default display refresh period.
* Can be changed in the display driver (`lv_disp_drv_t`).*/
#define LV_DISP_DEF_REFR_PERIOD 30 /*[ms]*/
/* Dot Per Inch: used to initialize default sizes.
* E.g. a button with width = LV_DPI / 2 -> half inch wide
* (Not so important, you can adjust it to modify default sizes and spaces)*/
#define LV_DPI 130 /*[px]*/
/* The the real width of the display changes some default values:
* default object sizes, layout of examples, etc.
* According to the width of the display (hor. res. / dpi)
* the displays fall in 4 categories.
* The 4th is extra large which has no upper limit so not listed here
* The upper limit of the categories are set below in 0.1 inch unit.
*/
#define LV_DISP_SMALL_LIMIT 30
#define LV_DISP_MEDIUM_LIMIT 50
#define LV_DISP_LARGE_LIMIT 70
/* Type of coordinates. Should be `int16_t` (or `int32_t` for extreme cases) */
typedef int32_t lv_coord_t;
/*=========================
Memory manager settings
*=========================*/
/* LittelvGL's internal memory manager's settings.
* The graphical objects and other related data are stored here. */
/* 1: use custom malloc/free, 0: use the built-in `lv_mem_alloc` and `lv_mem_free` */
#define LV_MEM_CUSTOM 0
#if LV_MEM_CUSTOM == 0
/* Size of the memory used by `lv_mem_alloc` in bytes (>= 2kB)*/
# define LV_MEM_SIZE (16U * 1024U)
/* Complier prefix for a big array declaration */
# define LV_MEM_ATTR
/* Set an address for the memory pool instead of allocating it as an array.
* Can be in external SRAM too. */
# define LV_MEM_ADR 0
/* Automatically defrag. on free. Defrag. means joining the adjacent free cells. */
# define LV_MEM_AUTO_DEFRAG 1
#else /*LV_MEM_CUSTOM*/
# define LV_MEM_CUSTOM_INCLUDE <stdlib.h> /*Header for the dynamic memory function*/
# define LV_MEM_CUSTOM_ALLOC malloc /*Wrapper to malloc*/
# define LV_MEM_CUSTOM_FREE free /*Wrapper to free*/
#endif /*LV_MEM_CUSTOM*/
/* Garbage Collector settings
* Used if lvgl is binded to higher level language and the memory is managed by that language */
#define LV_ENABLE_GC 0
#if LV_ENABLE_GC != 0
# define LV_GC_INCLUDE "gc.h" /*Include Garbage Collector related things*/
# define LV_MEM_CUSTOM_REALLOC your_realloc /*Wrapper to realloc*/
# define LV_MEM_CUSTOM_GET_SIZE your_mem_get_size /*Wrapper to lv_mem_get_size*/
#endif /* LV_ENABLE_GC */
/*=======================
Input device settings
*=======================*/
/* Input device default settings.
* Can be changed in the Input device driver (`lv_indev_drv_t`)*/
/* Input device read period in milliseconds */
#define LV_INDEV_DEF_READ_PERIOD 30
/* Drag threshold in pixels */
#define LV_INDEV_DEF_DRAG_LIMIT 10
/* Drag throw slow-down in [%]. Greater value -> faster slow-down */
#define LV_INDEV_DEF_DRAG_THROW 10
/* Long press time in milliseconds.
* Time to send `LV_EVENT_LONG_PRESSSED`) */
#define LV_INDEV_DEF_LONG_PRESS_TIME 400
/* Repeated trigger period in long press [ms]
* Time between `LV_EVENT_LONG_PRESSED_REPEAT */
#define LV_INDEV_DEF_LONG_PRESS_REP_TIME 100
/* Gesture threshold in pixels */
#define LV_INDEV_DEF_GESTURE_LIMIT 50
/* Gesture min velocity at release before swipe (pixels)*/
#define LV_INDEV_DEF_GESTURE_MIN_VELOCITY 3
/*==================
* Feature usage
*==================*/
/*1: Enable the Animations */
#define LV_USE_ANIMATION 1
#if LV_USE_ANIMATION
/*Declare the type of the user data of animations (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_anim_user_data_t;
#endif
/* 1: Enable shadow drawing*/
#define LV_USE_SHADOW 1
#if LV_USE_SHADOW
/* Allow buffering some shadow calculation
* LV_SHADOW_CACHE_SIZE is the max. shadow size to buffer,
* where shadow size is `shadow_width + radius`
* Caching has LV_SHADOW_CACHE_SIZE^2 RAM cost*/
#define LV_SHADOW_CACHE_SIZE 0
#endif
/* 1: Use other blend modes than normal (`LV_BLEND_MODE_...`)*/
#define LV_USE_BLEND_MODES 1
/* 1: Use the `opa_scale` style property to set the opacity of an object and its children at once*/
#define LV_USE_OPA_SCALE 1
/* 1: Use image zoom and rotation*/
#define LV_USE_IMG_TRANSFORM 1
/* 1: Enable object groups (for keyboard/encoder navigation) */
#define LV_USE_GROUP 1
#if LV_USE_GROUP
typedef void * lv_group_user_data_t;
#endif /*LV_USE_GROUP*/
/* 1: Enable GPU interface*/
#define LV_USE_GPU 1 /*Only enables `gpu_fill_cb` and `gpu_blend_cb` in the disp. drv- */
#define LV_USE_GPU_STM32_DMA2D 0
/* 1: Enable file system (might be required for images */
#define LV_USE_FILESYSTEM 1
#if LV_USE_FILESYSTEM
/*Declare the type of the user data of file system drivers (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_fs_drv_user_data_t;
#endif
/*1: Add a `user_data` to drivers and objects*/
#define LV_USE_USER_DATA 0
/*1: Show CPU usage and FPS count in the right bottom corner*/
#define LV_USE_PERF_MONITOR 0
/*1: Use the functions and types from the older API if possible */
#define LV_USE_API_EXTENSION_V6 1
/*========================
* Image decoder and cache
*========================*/
/* 1: Enable indexed (palette) images */
#define LV_IMG_CF_INDEXED 1
/* 1: Enable alpha indexed images */
#define LV_IMG_CF_ALPHA 1
/* Default image cache size. Image caching keeps the images opened.
* If only the built-in image formats are used there is no real advantage of caching.
* (I.e. no new image decoder is added)
* With complex image decoders (e.g. PNG or JPG) caching can save the continuous open/decode of images.
* However the opened images might consume additional RAM.
* LV_IMG_CACHE_DEF_SIZE must be >= 1 */
#define LV_IMG_CACHE_DEF_SIZE 1
/*Declare the type of the user data of image decoder (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_img_decoder_user_data_t;
/*=====================
* Compiler settings
*====================*/
/* Define a custom attribute to `lv_tick_inc` function */
#define LV_ATTRIBUTE_TICK_INC
/* Define a custom attribute to `lv_task_handler` function */
#define LV_ATTRIBUTE_TASK_HANDLER
/* Define a custom attribute to `lv_disp_flush_ready` function */
#define LV_ATTRIBUTE_FLUSH_READY
/* With size optimization (-Os) the compiler might not align data to
* 4 or 8 byte boundary. This alignment will be explicitly applied where needed.
* E.g. __attribute__((aligned(4))) */
#define LV_ATTRIBUTE_MEM_ALIGN
/* Attribute to mark large constant arrays for example
* font's bitmaps */
#define LV_ATTRIBUTE_LARGE_CONST
/* Prefix performance critical functions to place them into a faster memory (e.g RAM)
* Uses 15-20 kB extra memory */
#define LV_ATTRIBUTE_FAST_MEM
/* Export integer constant to binding.
* This macro is used with constants in the form of LV_<CONST> that
* should also appear on lvgl binding API such as Micropython
*
* The default value just prevents a GCC warning.
*/
#define LV_EXPORT_CONST_INT(int_value) struct _silence_gcc_warning
/*===================
* HAL settings
*==================*/
/* 1: use a custom tick source.
* It removes the need to manually update the tick with `lv_tick_inc`) */
#define LV_TICK_CUSTOM 1
#if LV_TICK_CUSTOM == 1
#define LV_TICK_CUSTOM_INCLUDE "Arduino.h" /*Header for the sys time function*/
#define LV_TICK_CUSTOM_SYS_TIME_EXPR (millis()) /*Expression evaluating to current systime in ms*/
#endif /*LV_TICK_CUSTOM*/
typedef void * lv_disp_drv_user_data_t; /*Type of user data in the display driver*/
typedef void * lv_indev_drv_user_data_t; /*Type of user data in the input device driver*/
/*================
* Log settings
*===============*/
/*1: Enable the log module*/
#define LV_USE_LOG 0
#if LV_USE_LOG
/* How important log should be added:
* LV_LOG_LEVEL_TRACE A lot of logs to give detailed information
* LV_LOG_LEVEL_INFO Log important events
* LV_LOG_LEVEL_WARN Log if something unwanted happened but didn't cause a problem
* LV_LOG_LEVEL_ERROR Only critical issue, when the system may fail
* LV_LOG_LEVEL_NONE Do not log anything
*/
# define LV_LOG_LEVEL LV_LOG_LEVEL_WARN
/* 1: Print the log with 'printf';
* 0: user need to register a callback with `lv_log_register_print_cb`*/
# define LV_LOG_PRINTF 0
#endif /*LV_USE_LOG*/
/*=================
* Debug settings
*================*/
/* If Debug is enabled LittelvGL validates the parameters of the functions.
* If an invalid parameter is found an error log message is printed and
* the MCU halts at the error. (`LV_USE_LOG` should be enabled)
* If you are debugging the MCU you can pause
* the debugger to see exactly where the issue is.
*
* The behavior of asserts can be overwritten by redefining them here.
* E.g. #define LV_ASSERT_MEM(p) <my_assert_code>
*/
#define LV_USE_DEBUG 1
#if LV_USE_DEBUG
/*Check if the parameter is NULL. (Quite fast) */
#define LV_USE_ASSERT_NULL 1
/*Checks is the memory is successfully allocated or no. (Quite fast)*/
#define LV_USE_ASSERT_MEM 1
/*Check the integrity of `lv_mem` after critical operations. (Slow)*/
#define LV_USE_ASSERT_MEM_INTEGRITY 0
/* Check the strings.
* Search for NULL, very long strings, invalid characters, and unnatural repetitions. (Slow)
* If disabled `LV_USE_ASSERT_NULL` will be performed instead (if it's enabled) */
#define LV_USE_ASSERT_STR 0
/* Check NULL, the object's type and existence (e.g. not deleted). (Quite slow)
* If disabled `LV_USE_ASSERT_NULL` will be performed instead (if it's enabled) */
#define LV_USE_ASSERT_OBJ 0
/*Check if the styles are properly initialized. (Fast)*/
#define LV_USE_ASSERT_STYLE 0
#endif /*LV_USE_DEBUG*/
/*==================
* FONT USAGE
*===================*/
/* The built-in fonts contains the ASCII range and some Symbols with 4 bit-per-pixel.
* The symbols are available via `LV_SYMBOL_...` defines
* More info about fonts: https://docs.lvgl.com/#Fonts
* To create a new font go to: https://lvgl.com/ttf-font-to-c-array
*/
/* Montserrat fonts with bpp = 4
* https://fonts.google.com/specimen/Montserrat */
#define LV_FONT_MONTSERRAT_12 0
#define LV_FONT_MONTSERRAT_14 0
#define LV_FONT_MONTSERRAT_16 0
#define LV_FONT_MONTSERRAT_18 0
#define LV_FONT_MONTSERRAT_20 0
#define LV_FONT_MONTSERRAT_22 0
#define LV_FONT_MONTSERRAT_24 0
#define LV_FONT_MONTSERRAT_26 0
#define LV_FONT_MONTSERRAT_28 0
#define LV_FONT_MONTSERRAT_30 0
#define LV_FONT_MONTSERRAT_32 0
#define LV_FONT_MONTSERRAT_34 0
#define LV_FONT_MONTSERRAT_36 0
#define LV_FONT_MONTSERRAT_38 0
#define LV_FONT_MONTSERRAT_40 0
#define LV_FONT_MONTSERRAT_42 0
#define LV_FONT_MONTSERRAT_44 0
#define LV_FONT_MONTSERRAT_46 0
#define LV_FONT_MONTSERRAT_48 0
#define TENCENT_W7_16 1
#define TENCENT_W7_22 1
#define TENCENT_W7_24 1
#define ICONFONT_SYMBOL 1
/* Demonstrate special features */
#define LV_FONT_MONTSERRAT_12_SUBPX 0
#define LV_FONT_MONTSERRAT_28_COMPRESSED 0 /*bpp = 3*/
#define LV_FONT_DEJAVU_16_PERSIAN_HEBREW 0 /*Hebrew, Arabic, PErisan letters and all their forms*/
#define LV_FONT_SIMSUN_16_CJK 0 /*1000 most common CJK radicals*/
/*Pixel perfect monospace font
* http://pelulamu.net/unscii/ */
#define LV_FONT_UNSCII_8 0
/* Optionally declare your custom fonts here.
* You can use these fonts as default font too
* and they will be available globally. E.g.
* #define LV_FONT_CUSTOM_DECLARE LV_FONT_DECLARE(my_font_1) \
* LV_FONT_DECLARE(my_font_2)
*/
#define LV_FONT_CUSTOM_DECLARE
/* Enable it if you have fonts with a lot of characters.
* The limit depends on the font size, font face and bpp
* but with > 10,000 characters if you see issues probably you need to enable it.*/
#define LV_FONT_FMT_TXT_LARGE 0
/* Set the pixel order of the display.
* Important only if "subpx fonts" are used.
* With "normal" font it doesn't matter.
*/
#define LV_FONT_SUBPX_BGR 0
/*Declare the type of the user data of fonts (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_font_user_data_t;
/*================
* THEME USAGE
*================*/
/*Always enable at least on theme*/
/* No theme, you can apply your styles as you need
* No flags. Set LV_THEME_DEFAULT_FLAG 0 */
#define LV_USE_THEME_EMPTY 1
/*Simple to the create your theme based on it
* No flags. Set LV_THEME_DEFAULT_FLAG 0 */
#define LV_USE_THEME_TEMPLATE 1
/* A fast and impressive theme.
* Flags:
* LV_THEME_MATERIAL_FLAG_LIGHT: light theme
* LV_THEME_MATERIAL_FLAG_DARK: dark theme*/
#define LV_USE_THEME_MATERIAL 1
/* Mono-color theme for monochrome displays.
* If LV_THEME_DEFAULT_COLOR_PRIMARY is LV_COLOR_BLACK the
* texts and borders will be black and the background will be
* white. Else the colors are inverted.
* No flags. Set LV_THEME_DEFAULT_FLAG 0 */
#define LV_USE_THEME_MONO 1
#define LV_THEME_DEFAULT_INCLUDE <stdint.h> /*Include a header for the init. function*/
#define LV_THEME_DEFAULT_INIT lv_theme_material_init
#define LV_THEME_DEFAULT_COLOR_PRIMARY LV_COLOR_RED
#define LV_THEME_DEFAULT_COLOR_SECONDARY LV_COLOR_BLUE
#define LV_THEME_DEFAULT_FLAG LV_THEME_MATERIAL_FLAG_LIGHT
// #define LV_THEME_DEFAULT_FONT_SMALL &lv_font_montserrat_16
// #define LV_THEME_DEFAULT_FONT_NORMAL &lv_font_montserrat_16
// #define LV_THEME_DEFAULT_FONT_SUBTITLE &lv_font_montserrat_16
// #define LV_THEME_DEFAULT_FONT_TITLE &lv_font_montserrat_16
#define LV_THEME_DEFAULT_FONT_SMALL &tencent_w7_16
#define LV_THEME_DEFAULT_FONT_NORMAL &tencent_w7_16
#define LV_THEME_DEFAULT_FONT_SUBTITLE &tencent_w7_16
#define LV_THEME_DEFAULT_FONT_TITLE &tencent_w7_16
/*=================
* Text settings
*=================*/
/* Select a character encoding for strings.
* Your IDE or editor should have the same character encoding
* - LV_TXT_ENC_UTF8
* - LV_TXT_ENC_ASCII
* */
#define LV_TXT_ENC LV_TXT_ENC_UTF8
/*Can break (wrap) texts on these chars*/
#define LV_TXT_BREAK_CHARS " ,.;:-_"
/* If a word is at least this long, will break wherever "prettiest"
* To disable, set to a value <= 0 */
#define LV_TXT_LINE_BREAK_LONG_LEN 0
/* Minimum number of characters in a long word to put on a line before a break.
* Depends on LV_TXT_LINE_BREAK_LONG_LEN. */
#define LV_TXT_LINE_BREAK_LONG_PRE_MIN_LEN 3
/* Minimum number of characters in a long word to put on a line after a break.
* Depends on LV_TXT_LINE_BREAK_LONG_LEN. */
#define LV_TXT_LINE_BREAK_LONG_POST_MIN_LEN 3
/* The control character to use for signalling text recoloring. */
#define LV_TXT_COLOR_CMD "#"
/* Support bidirectional texts.
* Allows mixing Left-to-Right and Right-to-Left texts.
* The direction will be processed according to the Unicode Bidirectioanl Algorithm:
* https://www.w3.org/International/articles/inline-bidi-markup/uba-basics*/
#define LV_USE_BIDI 0
#if LV_USE_BIDI
/* Set the default direction. Supported values:
* `LV_BIDI_DIR_LTR` Left-to-Right
* `LV_BIDI_DIR_RTL` Right-to-Left
* `LV_BIDI_DIR_AUTO` detect texts base direction */
#define LV_BIDI_BASE_DIR_DEF LV_BIDI_DIR_AUTO
#endif
/* Enable Arabic/Persian processing
* In these languages characters should be replaced with
* an other form based on their position in the text */
#define LV_USE_ARABIC_PERSIAN_CHARS 0
/*Change the built in (v)snprintf functions*/
#define LV_SPRINTF_CUSTOM 1
#if LV_SPRINTF_CUSTOM
# define LV_SPRINTF_INCLUDE <stdio.h>
# define lv_snprintf snprintf
# define lv_vsnprintf vsnprintf
#endif /*LV_SPRINTF_CUSTOM*/
/*===================
* LV_OBJ SETTINGS
*==================*/
#if LV_USE_USER_DATA
/*Declare the type of the user data of object (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_obj_user_data_t;
/*Provide a function to free user data*/
#define LV_USE_USER_DATA_FREE 0
#if LV_USE_USER_DATA_FREE
# define LV_USER_DATA_FREE_INCLUDE "something.h" /*Header for user data free function*/
/* Function prototype : void user_data_free(lv_obj_t * obj); */
# define LV_USER_DATA_FREE (user_data_free) /*Invoking for user data free function*/
#endif
#endif
/*1: enable `lv_obj_realaign()` based on `lv_obj_align()` parameters*/
#define LV_USE_OBJ_REALIGN 1
/* Enable to make the object clickable on a larger area.
* LV_EXT_CLICK_AREA_OFF or 0: Disable this feature
* LV_EXT_CLICK_AREA_TINY: The extra area can be adjusted horizontally and vertically (0..255 px)
* LV_EXT_CLICK_AREA_FULL: The extra area can be adjusted in all 4 directions (-32k..+32k px)
*/
#define LV_USE_EXT_CLICK_AREA LV_EXT_CLICK_AREA_TINY
/*==================
* LV OBJ X USAGE
*================*/
/*
* Documentation of the object types: https://docs.lvgl.com/#Object-types
*/
/*Arc (dependencies: -)*/
#define LV_USE_ARC 1
/*Bar (dependencies: -)*/
#define LV_USE_BAR 1
/*Button (dependencies: lv_cont*/
#define LV_USE_BTN 1
/*Button matrix (dependencies: -)*/
#define LV_USE_BTNMATRIX 1
/*Calendar (dependencies: -)*/
#define LV_USE_CALENDAR 1
/*Canvas (dependencies: lv_img)*/
#define LV_USE_CANVAS 1
/*Check box (dependencies: lv_btn, lv_label)*/
#define LV_USE_CHECKBOX 1
/*Chart (dependencies: -)*/
#define LV_USE_CHART 1
#if LV_USE_CHART
# define LV_CHART_AXIS_TICK_LABEL_MAX_LEN 256
#endif
/*Container (dependencies: -*/
#define LV_USE_CONT 1
/*Color picker (dependencies: -*/
#define LV_USE_CPICKER 1
/*Drop down list (dependencies: lv_page, lv_label, lv_symbol_def.h)*/
#define LV_USE_DROPDOWN 1
#if LV_USE_DROPDOWN != 0
/*Open and close default animation time [ms] (0: no animation)*/
# define LV_DROPDOWN_DEF_ANIM_TIME 200
#endif
/*Gauge (dependencies:lv_bar, lv_linemeter)*/
#define LV_USE_GAUGE 1
/*Image (dependencies: lv_label*/
#define LV_USE_IMG 1
/*Image Button (dependencies: lv_btn*/
#define LV_USE_IMGBTN 1
#if LV_USE_IMGBTN
/*1: The imgbtn requires left, mid and right parts and the width can be set freely*/
# define LV_IMGBTN_TILED 0
#endif
/*Keyboard (dependencies: lv_btnm)*/
#define LV_USE_KEYBOARD 1
/*Label (dependencies: -*/
#define LV_USE_LABEL 1
#if LV_USE_LABEL != 0
/*Hor, or ver. scroll speed [px/sec] in 'LV_LABEL_LONG_ROLL/ROLL_CIRC' mode*/
# define LV_LABEL_DEF_SCROLL_SPEED 25
/* Waiting period at beginning/end of animation cycle */
# define LV_LABEL_WAIT_CHAR_COUNT 3
/*Enable selecting text of the label */
# define LV_LABEL_TEXT_SEL 0
/*Store extra some info in labels (12 bytes) to speed up drawing of very long texts*/
# define LV_LABEL_LONG_TXT_HINT 0
#endif
/*LED (dependencies: -)*/
#define LV_USE_LED 1
#if LV_USE_LED
# define LV_LED_BRIGHT_MIN 120 /*Minimal brightness*/
# define LV_LED_BRIGHT_MAX 255 /*Maximal brightness*/
#endif
/*Line (dependencies: -*/
#define LV_USE_LINE 1
/*List (dependencies: lv_page, lv_btn, lv_label, (lv_img optionally for icons ))*/
#define LV_USE_LIST 1
#if LV_USE_LIST != 0
/*Default animation time of focusing to a list element [ms] (0: no animation) */
# define LV_LIST_DEF_ANIM_TIME 100
#endif
/*Line meter (dependencies: *;)*/
#define LV_USE_LINEMETER 1
#if LV_USE_LINEMETER
/* Draw line more precisely at cost of performance.
* Useful if there are lot of lines any minor are visible
* 0: No extra precision
* 1: Some extra precision
* 2: Best precision
*/
# define LV_LINEMETER_PRECISE 0
#endif
/*Mask (dependencies: -)*/
#define LV_USE_OBJMASK 1
/*Message box (dependencies: lv_rect, lv_btnm, lv_label)*/
#define LV_USE_MSGBOX 1
/*Page (dependencies: lv_cont)*/
#define LV_USE_PAGE 1
#if LV_USE_PAGE != 0
/*Focus default animation time [ms] (0: no animation)*/
# define LV_PAGE_DEF_ANIM_TIME 400
#endif
/*Preload (dependencies: lv_arc, lv_anim)*/
#define LV_USE_SPINNER 1
#if LV_USE_SPINNER != 0
# define LV_SPINNER_DEF_ARC_LENGTH 60 /*[deg]*/
# define LV_SPINNER_DEF_SPIN_TIME 1000 /*[ms]*/
# define LV_SPINNER_DEF_ANIM LV_SPINNER_TYPE_SPINNING_ARC
#endif
/*Roller (dependencies: lv_ddlist)*/
#define LV_USE_ROLLER 1
#if LV_USE_ROLLER != 0
/*Focus animation time [ms] (0: no animation)*/
# define LV_ROLLER_DEF_ANIM_TIME 200
/*Number of extra "pages" when the roller is infinite*/
# define LV_ROLLER_INF_PAGES 7
#endif
/*Slider (dependencies: lv_bar)*/
#define LV_USE_SLIDER 1
/*Spinbox (dependencies: lv_ta)*/
#define LV_USE_SPINBOX 1
/*Switch (dependencies: lv_slider)*/
#define LV_USE_SWITCH 1
/*Text area (dependencies: lv_label, lv_page)*/
#define LV_USE_TEXTAREA 1
#if LV_USE_TEXTAREA != 0
# define LV_TEXTAREA_DEF_CURSOR_BLINK_TIME 400 /*ms*/
# define LV_TEXTAREA_DEF_PWD_SHOW_TIME 1500 /*ms*/
#endif
/*Table (dependencies: lv_label)*/
#define LV_USE_TABLE 1
#if LV_USE_TABLE
# define LV_TABLE_COL_MAX 12
#endif
/*Tab (dependencies: lv_page, lv_btnm)*/
#define LV_USE_TABVIEW 1
# if LV_USE_TABVIEW != 0
/*Time of slide animation [ms] (0: no animation)*/
# define LV_TABVIEW_DEF_ANIM_TIME 300
#endif
/*Tileview (dependencies: lv_page) */
#define LV_USE_TILEVIEW 1
#if LV_USE_TILEVIEW
/*Time of slide animation [ms] (0: no animation)*/
# define LV_TILEVIEW_DEF_ANIM_TIME 300
#endif
/*Window (dependencies: lv_cont, lv_btn, lv_label, lv_img, lv_page)*/
#define LV_USE_WIN 1
/*==================
* Non-user section
*==================*/
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS) /* Disable warnings for Visual Studio*/
# define _CRT_SECURE_NO_WARNINGS
#endif
/*--END OF LV_CONF_H--*/
#endif /*LV_CONF_H*/
#endif /*End of "Content enable"*/

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# Changelog
## v7.0.2 (16.06.2020)
- `lv_textarea` fix wrong cursor position when clicked after the last character
- Change all text related indices from 16-bit to 32-bit integers throughout whole library. #1545
- Fix gestures
- Do not call `set_px_cb` for transparent pixel
- Fix list button focus in material theme
- Fix crash when the a text area is cleared with the backspace of a keyboard
- Add version number to `lv_conf_template.h`
- Add log in true double buffering mode with `set_px_cb`
- `lv_dropdown`: fix missing `LV_EVENT_VALUE_CHANGED` event when used with encoder
- `lv_tileview`: fix if not the {0;0} tile is created first
- `lv_debug`: restructure to allow asserting in from `lv_misc` too
- add assert if `_lv_mem_buf_get()` fails
- `lv_textarea`: fix character delete in password mode
- Update `LV_OPA_MIN` and `LV_OPA_MAX` to widen the opacity processed range
- `lv_btnm` fix sending events for hidden buttons
- `lv_gaguge` make `lv_gauge_set_angle_offset` offset the labels and needles too
- Fix typo in the API `scrllable` -> `scrollable`
- `tabview` by default allow auto expanding the page only to right and bottom (#1573)
- fix crash when drawing gradient to the same color
- chart: fix memory leak
## v7.0.1 (01.06.2020)
### Bugfixes
- Make the Microptyhon working by adding the required variables as GC_ROOT
- Prefix some internal API functions with `_` to reduce the API of LVGL
- Fix built-in SimSun CJK font
- Fix UTF-8 encoding when `LV_USE_ARABIC_PERSIAN_CHARS` is enabled
- Fix DMA2D usage when 32 bit images directly blended
- Fix lv_roller in infinite mode when used with encoder
- Add `lv_theme_get_color_secondary()`
- Add `LV_COLOR_MIX_ROUND_OFS` to adjust color mixing to make it compatible with the GPU
- Improve DMA2D blending
- Remove memcpy from `lv_ll` (caused issues with some optimization settings)
- `lv_chart` fix X tick drawing
- Fix vertical dashed line drawing
- Some additonal minor fixes and formattings
## v7.0.0 (18.05.2020)
### Documentation
The docs for v7 is available at https://docs.littlevgl.com/v7/en/html/index.html
### Legal changes
The name of the project is changed to LVGL and the new website is on https://lvgl.io
LVGL remains free under the same conditions (MIT license) and a company is created to manage LVGL and offer services.
### New drawing system
Complete rework of LVGL's draw engine to use "masks" for more advanced and higher quality graphical effects.
A possible use-case of this system is to remove the overflowing content from the rounded edges.
It also allows drawing perfectly anti-aliased circles, lines, and arcs.
Internally, the drawings happen by defining masks (such as rounded rectangle, line, angle).
When something is drawn the currently active masks can make some pixels transparent.
For example, rectangle borders are drawn by using 2 rectangle masks: one mask removes the inner part and another the outer part.
The API in this regard remained the same but some new functions were added:
- `lv_img_set_zoom`: set image object's zoom factor
- `lv_img_set_angle`: set image object's angle without using canvas
- `lv_img_set_pivot`: set the pivot point of rotation
The new drawing engine brought new drawing features too. They are highlighted in the "style" section.
### New style system
The old style system is replaced with a new more flexible and lightweighted one.
It uses an approach similar to CSS: support cascading styles, inheriting properties and local style properties per object.
As part of these updates, a lot of objects were reworked and the APIs have been changed.
- more shadows options: *offset* and *spread*
- gradient stop position to shift the gradient area and horizontal gradient
- `LV_BLEND_MODE_NORMAL/ADDITIVE/SUBTRACTIVE` blending modes
- *clip corner*: crop the content on the rounded corners
- *text underline* and *strikethrough*
- dashed vertical and horizontal lines (*dash gap*, *dash_width*)
- *outline*: a border-like part drawn out of the background. Can have spacing to the background.
- *pattern*: display and image in the middle of the background or repeat it
- *value* display a text which is stored in the style. It can be used e.g. as a lighweighted text on buttons too.
- *margin*: similar to *padding* but used to keep space outside of the object
Read the [Style](https://docs.littlevgl.com/v7/en/html/overview/style.html) section of the documentation to learn how the new styles system works.
### GPU integration
To better utilize GPUs, from this version GPU usage can be integrated into LVGL. In `lv_conf.h` any supported GPUs can be enabled with a single configuration option.
Right now, only ST's DMA2D (Chrom-ART) is integrated. More will in the upcoming releases.
### Renames
The following object types are renamed:
- sw -> switch
- ta -> textarea
- cb -> checkbox
- lmeter -> linemeter
- mbox -> msgbox
- ddlist -> dropdown
- btnm -> btnmatrix
- kb -> keyboard
- preload -> spinner
- lv_objx folder -> lv_widgets
- LV_FIT_FILL -> LV_FIT_PARENT
- LV_FIT_FLOOD -> LV_FLOOD_MAX
- LV_LAYOUT_COL_L/M/R -> LV_LAYOUT_COLUMN_LEFT/MID/RIGHT
- LV_LAYOUT_ROW_T/M/B -> LV_LAYOUT_ROW_TOP/MID/BOTTOM
### Reworked and improved object
- `dropdown`: Completely reworked. Now creates a separate list when opened and can be dropped to down/up/left/right.
- `label`: `body_draw` is removed, instead, if its style has a visible background/border/shadow etc it will be drawn. Padding really makes the object larger (not just virtually as before)
- `arc`: can draw bacground too.
- `btn`: doesn't store styles for each state because it's done naturally in the new style system.
- `calendar`: highlight the pressed datum. The used styles are changed: use `LV_CALENDAR_PART_DATE` normal for normal dates, checked for highlighted, focused for today, pressed for the being pressed. (checked+pressed, focused+pressed also work)
- `chart`: only has `LINE` and `COLUMN` types because with new styles all the others can be described. LV_CHART_PART_SERIES sets the style of the series. bg_opa > 0 draws an area in LINE mode. `LV_CHART_PART_SERIES_BG` also added to set a different style for the series area. Padding in `LV_CHART_PART_BG` makes the series area smaller, and it ensures space for axis labels/numbers.
- `linemeter`, `gauge`: can have background if the related style properties are set. Padding makes the scale/lines smaller. scale_border_width and scale_end_border_width allow to draw an arc on the outer part of the scale lines.
- `gauge`: `lv_gauge_set_needle_img` allows use image as needle
- `canvas`: allow drawing to true color alpha and alpha only canvas, add `lv_canvas_blur_hor/ver` and rename `lv_canvas_rotate` to `lv_canvas_transform`
- `textarea`: If available in the font use bullet (`U+2022`) character in text area password
### New object types
- `lv_objmask`: masks can be added to it. The children will be masked accordingly.
### Others
- Change the built-in fonts to [Montserrat](https://fonts.google.com/specimen/Montserrat) and add built-in fonts from 12 px to 48 px for every 2nd size.
- Add example CJK and Arabic/Persian/Hebrew built-in font
- Add ° and "bullet" to the built-in fonts
- Add Arabic/Persian script support: change the character according to its position in the text.
- Add `playback_time` to animations.
- Add `repeat_count` to animations instead of the current "repeat forever".
- Replace `LV_LAYOUT_PRETTY` with `LV_LAYOUT_PRETTY_TOP/MID/BOTTOM`
### Demos
- [lv_examples](https://github.com/littlevgl/lv_examples) was reworked and new examples and demos were added
### New release policy
- Maintain this Changelog for every release
- Save old major version in new branches. E.g. `release/v6`
- Merge new features and fixes directly into `master` and release a patch or minor releases every 2 weeks.
### Migrating from v6 to v7
- First and foremost, create a new `lv_conf.h` based on `lv_conf_templ.h`.
- To try the new version it suggested using a simulator project and see the examples.
- If you have a running project, the most difficult part of the migration is updating to the new style system. Unfortunately, there is no better way than manually updating to the new format.
- The other parts are mainly minor renames and refactoring as described above.

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MIT licence
Copyright (c) 2020 LVGL LLC
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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<h1 align="center"> LVGL - Light and Versatile Graphics Library</h1>
<p align="center">
<a href="https://github.com/lvgl/lvgl/blob/master/LICENCE.txt"><img src="https://img.shields.io/badge/licence-MIT-blue.svg"></a>
<a href="https://github.com/lvgl/lvgl/releases/tag/v7.0.0"><img src="https://img.shields.io/badge/version-7.0.0-blue.svg"></a>
</p>
<p align="center">
<img src="https://lvgl.io/assets/images/img_1.png">
</p>
<p align="center">
LVGL provides everything you need to create embedded GUI with easy-to-use graphical elements, beautiful visual effects and low memory footprint.
</p>
<h4 align="center">
<a href="https://lvgl.io">Website </a> &middot;
<a href="https://lvgl.io/demos">Live demo</a> &middot;
<a href="https://docs.lvgl.io/">Docs</a> &middot;
<a href="https://forum.lvgl.io">Forum</a> &middot;
<a href="https://blog.lvgl.io/">Blog</a>
</h4>
---
- [Features](#features)
- [Supported devices](#supported-devices)
- [Quick start in a simulator](#quick-start-in-a-simulator)
- [Add LVGL to your project](#add-lvgl-to-your-project)
- [Learn the basics](#learn-the-basics)
- [Examples](#examples)
- [Release policy](#release-policy)
- [Contributing](#contributing)
## Features
* **Powerful building blocks** buttons, charts, lists, sliders, images, etc.
* **Advanced graphics** with animations, anti-aliasing, opacity, smooth scrolling
* **Simultaneously use various input devices** touchscreen, mouse, keyboard, encoder, buttons, etc.
* **Simultaneously use multiple displays** i.e. monochrome and color display
* **Multi-language support** with UTF-8 encoding, Bidirectional support, and Arabic text handling
* **Fully customizable** graphical elements
* **Hardware independent** to use with any microcontroller or display
* **Scalable** to operate with little memory (64 kB Flash, 10 kB RAM)
* **OS, External memory and GPU** supported but not required
* **Single frame buffer** operation even with advances graphical effects
* **Written in C** for maximal compatibility (C++ compatible)
* **Micropython Binding** exposes [LVGL API in Micropython](https://blog.lvgl.io/2019-02-20/micropython-bindings)
* **Simulator** to develop on PC without embedded hardware
* **Tutorials, examples, themes** for rapid development
* **Documentation** and API references
## Supported devices
Basically, every modern controller (which is able to drive a display) is suitable to run LVGL. The minimal requirements are:
- 16, 32 or 64 bit microcontroller or processor
- &gt; 16 MHz clock speed is recommended
- Flash/ROM: &gt; 64 kB for the very essential components (&gt; 180 kB is recommended)
- RAM:
- Static RAM usage: ~2 kB depending on the used features and objects types
- Stack: &gt; 2kB (&gt; 8 kB is recommended)
- Dynamic data (heap): &gt; 2 KB (&gt; 16 kB is recommended if using several objects).
Set by `LV_MEM_SIZE` in *lv_conf.h*.
- Display buffer: &gt; *"Horizontal resolution"* pixels (&gt; 10 &times; *"Horizontal resolution"* is recommended)
- C99 or newer compiler
*Note that the memory usage might vary depending on the architecture, compiler and build options.*
Just to mention some **platforms**:
- STM32F1, STM32F3, [STM32F4](https://blog.lvgl.io/2017-07-15/stm32f429_disco_port), [STM32F7](https://github.com/lvgl/lv_port_stm32f746_disco_sw4stm32)
- Microchip dsPIC33, PIC24, PIC32MX, PIC32MZ
- NXP Kinetis, LPC, iMX
- [Linux frame buffer](https://blog.lvgl.io/2018-01-03/linux_fb) (/dev/fb)
- [Raspberry PI](http://www.vk3erw.com/index.php/16-software/63-raspberry-pi-official-7-touchscreen-and-littlevgl)
- [Espressif ESP32](https://github.com/lvgl/lv_port_esp32)
- Nordic nrf52
- Quectell M66
## Quick start in a simulator
The easiest way to get started with LVGL is to run it in a simulator on your PC without any embedded hardware.
Choose a project with your favourite IDE:
| Eclipse | CodeBlocks | Visual Studio | PlatformIO | Qt Creator |
|-------------|-------------|---------------|-----------|------------|
| [![Eclipse](https://raw.githubusercontent.com/lvgl/docs/master/v7/misc//eclipse.jpg)](https://github.com/lvgl/lv_sim_eclipse_sdl) | [![CodeBlocks](https://raw.githubusercontent.com/lvgl/docs/master/v7/misc//codeblocks.jpg)](https://github.com/lvgl/lv_sim_codeblocks_win) | [![VisualStudio](https://raw.githubusercontent.com/lvgl/docs/master/v7/misc//visualstudio.jpg)](https://github.com/lvgl/lv_sim_visual_studio_sdl) | [![PlatformIO](https://raw.githubusercontent.com/lvgl/docs/master/v7/misc//platformio.jpg)](https://github.com/lvgl/lv_platformio) | [![QtCreator](https://raw.githubusercontent.com/lvgl/docs/master/v7/misc//qtcreator.jpg)](https://blog.lvgl.io/2019-01-03/qt-creator) |
| Cross-platform<br>with SDL<br>(Recommended on<br>Linux and Mac) | Native Windows | Windows<br>with SDL | Cross-platform<br>with SDL | Cross-platform<br>with SDL |
## Add LVGL to your project
The steps below show how to setup LVGL on an embedded system with a display and a touchpad.
You can use the [Simulators](https://docs.lvgl.io/v7/en/html/get-started/pc-simulator) to get ready to use projects which can be run on your PC.
1. [Download](https://github.com/lvgl/lvgl/archive/master.zip) or [Clone](https://github.com/lvgl/lvgl) the library
2. Copy the `lvgl` folder into your project
3. Copy `lvgl/lv_conf_template.h` as `lv_conf.h` next to the `lvgl` folder, change the `#if 0` statement near the top of the file to `#if 1` and set at least `LV_HOR_RES_MAX`, `LV_VER_RES_MAX` and `LV_COLOR_DEPTH`.
4. Include `lvgl/lvgl.h` where you need to use LVGL related functions.
5. Call `lv_tick_inc(x)` every `x` milliseconds (should be 1..10) in a Timer or Task. It is required for the internal timing of LVGL.
6. Call `lv_init()`
7. Create a display buffer for LVGL
```c
static lv_disp_buf_t disp_buf;
static lv_color_t buf[LV_HOR_RES_MAX * 10]; /*Declare a buffer for 10 lines*/
lv_disp_buf_init(&disp_buf, buf, NULL, LV_HOR_RES_MAX * 10); /*Initialize the display buffer*/
```
8. Implement and register a function which can copy a pixel array to an area of your display:
```c
lv_disp_drv_t disp_drv; /*Descriptor of a display driver*/
lv_disp_drv_init(&disp_drv); /*Basic initialization*/
disp_drv.flush_cb = my_disp_flush; /*Set your driver function*/
disp_drv.buffer = &disp_buf; /*Assign the buffer to the display*/
lv_disp_drv_register(&disp_drv); /*Finally register the driver*/
void my_disp_flush(lv_disp_t * disp, const lv_area_t * area, lv_color_t * color_p)
{
int32_t x, y;
for(y = area->y1; y <= area->y2; y++) {
for(x = area->x1; x <= area->x2; x++) {
my_set_pixel(x, y, *color_p); /* Put a pixel to the display.*/
color_p++;
}
}
lv_disp_flush_ready(disp); /* Indicate you are ready with the flushing*/
}
```
9. Implement and register a function which can read an input device. E.g. for a touch pad:
```c
lv_indev_drv_init(&indev_drv); /*Descriptor of a input device driver*/
indev_drv.type = LV_INDEV_TYPE_POINTER; /*Touch pad is a pointer-like device*/
indev_drv.read_cb = my_touchpad_read; /*Set your driver function*/
lv_indev_drv_register(&indev_drv); /*Finally register the driver*/
bool my_touchpad_read(lv_indev_drv_t * indev_driver, lv_indev_data_t * data)
{
data->state = my_touchpad_is_pressed() ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL;
if(data->state == LV_INDEV_STATE_PR) touchpad_get_xy(&data->point.x, &data->point.y);
return false; /*Return `false` because we are not buffering and no more data to read*/
}
```
10. Call `lv_task_handler()` periodically every few milliseconds in the main `while(1)` loop, in Timer interrupt or in an Operation system task.
It will redraw the screen if required, handle input devices etc.
For more detailed desription visit the [Porting](https://docs.lvgl.io/v7/en/html/porting/index.html) section of the documentation.
## Learn the basics
In this section you can read the very basics of LVGL.
For a more detailed guide check the [Quick overview](https://docs.lvgl.io/v7/en/html/get-started/quick-overview.html#learn-the-basics) in the documentation.
### Widgets (Objects)
The graphical elements like Buttons, Labels, Sliders, Charts etc are called objects or widgets in LVGL. Go to [Widgets](https://docs.lvgl.io/v7/en/html/widgets/index) to see the full list of available types.
Every object has a parent object. The child object moves with the parent and if you delete the parent the children will be deleted too. Children can be visible only on their parent.
The *screen* are the "root" parents. To get the current screen call `lv_scr_act()`.
You can create a new object with `lv_<type>_create(parent, obj_to_copy)`. It will return an `lv_obj_t *` variable which should be used as a reference to the object to set its parameters later.
The first parameter is the desired *parent*, the second parameters can be an object to copy (`NULL` if unused).
For example:
```c
lv_obj_t * slider1 = lv_slider_create(lv_scr_act(), NULL);
```
To set some basic attribute `lv_obj_set_<paramters_name>(obj, <value>)` function can be used. For example:
```c
lv_obj_set_x(btn1, 30);
lv_obj_set_y(btn1, 10);
lv_obj_set_size(btn1, 200, 50);
```
The objects have type specific parameters too which can be set by `lv_<type>_set_<paramters_name>(obj, <value>)` functions. For example:
```c
lv_slider_set_value(slider1, 70, LV_ANIM_ON);
```
To see the full API visit the documentation of the object types or the related header file (e.g. `lvgl/src/lv_objx/lv_slider.h`).
To create a new screen pass `NULL` as the fisrt paramater of a *create* function:
```c
lv_obj_t * scr2 = lv_obj_create(NULL, NULL); /*Create a screen*/
lv_scr_load(scr2); /*Load the new screen*/
```
### Styles
Widgets are created with a default appearance but it can be changed by adding new styles to them. A new style can be created like this:
```c
static lv_style_t style1; /*Should be static, global or dynamically allocated*/
lv_style_init(&style1);
lv_style_set_bg_color(&style1, LV_STATE_DEFAULT, LV_COLOR_RED); /*Default background color*/
lv_style_set_bg_color(&style1, LV_STATE_PRESSED, LV_COLOR_BLUE); /*Pressed background color*/
```
The wigedt have *parts* which can be referenced via `LV_<TYPE>_PART_<PART_NAME>`. E.g. `LV_BTN_PART_MAIN` or `LV_SLIDER_PART_KNOB`. See the documentation of the widgets to see the exisitng parts.
To add the style to a button:
```c
lv_obj_add_style(btn1, LV_BTN_PART_MAIN, &style1);
```
To remove all styles from a part of an object:
```cc
lv_obj_reset_style_list(obj, LV_OBJ_PART_MAIN);
```
Learn more in [Style overview](https://docs.lvgl.io/v7/en/html/overview/style) section.
### Events
Events are used to inform the user if something has happened with an object. You can assign a callback to an object which will be called if the object is clicked, released, dragged, being deleted etc. It should look like this:
```c
lv_obj_set_event_cb(btn, btn_event_cb); /*Assign a callback to the button*/
...
void btn_event_cb(lv_obj_t * btn, lv_event_t event)
{
if(event == LV_EVENT_CLICKED) {
printf("Clicked\n");
}
}
```
Learn more about the events in the [Event overview](https://docs.lvgl.io/v7/en/html/overview/event) section.
## Examples
### Button with label
```c
lv_obj_t * btn = lv_btn_create(lv_scr_act(), NULL); /*Add a button the current screen*/
lv_obj_set_pos(btn, 10, 10); /*Set its position*/
lv_obj_set_size(btn, 100, 50); /*Set its size*/
lv_obj_set_event_cb(btn, btn_event_cb); /*Assign a callback to the button*/
lv_obj_t * label = lv_label_create(btn, NULL); /*Add a label to the button*/
lv_label_set_text(label, "Button"); /*Set the labels text*/
...
void btn_event_cb(lv_obj_t * btn, lv_event_t event)
{
if(event == LV_EVENT_CLICKED) {
printf("Clicked\n");
}
}
```
![LVGL button with label example](https://docs.lvgl.io/v7/en/misc/simple_button_example.gif)
### Use LVGL from Micropython
Learn more about [Micropython](https://docs.lvgl.io/en/html/get-started/micropython).
```python
# Create a Button and a Label
scr = lv.obj()
btn = lv.btn(scr)
btn.align(lv.scr_act(), lv.ALIGN.CENTER, 0, 0)
label = lv.label(btn)
label.set_text("Button")
# Load the screen
lv.scr_load(scr)
```
## Release policy
LVGL follows the rules of [Semantic versioning](https://semver.org/):
- Major versions for incompatible API changes. E.g. v5.0.0, v6.0.0
- Minor version for new but backward-compatible functionalities. E.g. v6.1.0, v6.2.0
- Patch version for backward-compatible bug fixes. E.g. v6.1.1, v6.1.2
Branches:
- `master` most recent version, patches are merged directly here.
- `dev` merge new features here until they are merged into `master`.
- `release/vX` there is a branch for every major version to allow adding specific, not forward compatible fixes.
LVGL has a monthly periodic release cycle.
- **1st Tuesday of the month**
  - Make a major, minor, or patch release from `master` depending on the new features.
  - After that merge only patches into `master` and add new features into the `dev`.
- **3rd Tuesday of the month**
  - Make a patch release from `master`.
  - After that merge the new features from the `dev` to `master` branch.
  - In the rest of the month merge only patches into `master` and new features into `dev` branch.
## Contributing
To ask questions please use the [Forum](https://forum.lvgl.io).
For development-related things (bug reports, feature suggestions) use [GitHub's Issue tracker](https://github.com/lvgl/lvgl/issues).
If you are interested in contributing to LVGL you can
- **Help others** in the [Forum](https://forum.lvgl.io).
- **Inspire people** by speaking about your project in [My project](https://forum.lvgl.io/c/my-projects) category in the Forum.
- **Improve and/or translate the documentation.** Go to the [Documentation](https://github.com/lvgl/docs) repository to learn more
- **Write a blog post** about your experiences. See how to do it in the [Blog](https://github.com/lvgl/blog) repository
- **Report and/or fix bugs** in [GitHub's issue tracker](https://github.com/lvgl/lvgl/issues)
- **Help in the developement**. Check the [Open issues](https://github.com/lvgl/lvgl/issues) especially the ones with [Help wanted](https://github.com/lvgl/lvgl/issues?q=is%3Aissue+is%3Aopen+label%3A%22help+wanted%22) label and tell your ideas about a topic or implement a feature.
Before sending Pull requests, please read the following guides:
- [Contributing guide](https://github.com/lvgl/lvgl/blob/master/docs/CONTRIBUTING.md)
- [Coding style guide](https://github.com/lvgl/lvgl/blob/master/docs/CODING_STYLE.md)

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# Contributor Covenant Code of Conduct
## Our Pledge
In the interest of fostering an open and welcoming environment, we as contributors and maintainers pledge to making participation in our project and our community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
## Our Standards
Examples of behavior that contributes to creating a positive environment include:
* Using welcoming and inclusive language
* Being respectful of differing viewpoints and experiences
* Gracefully accepting constructive criticism
* Focusing on what is best for the community
* Showing empathy towards other community members
Examples of unacceptable behavior by participants include:
* The use of sexualized language or imagery and unwelcome sexual attention or advances
* Trolling, insulting/derogatory comments, and personal or political attacks
* Public or private harassment
* Publishing others' private information, such as a physical or electronic address, without explicit permission
* Other conduct which could reasonably be considered inappropriate in a professional setting
## Our Responsibilities
Project maintainers are responsible for clarifying the standards of acceptable behavior and are expected to take appropriate and fair corrective action in response to any instances of unacceptable behavior.
Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
## Scope
This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community. Examples of representing a project or community include using an official project e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event. Representation of a project may be further defined and clarified by project maintainers.
## Enforcement
Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at [atom@github.com](mailto:atom@github.com). All complaints will be reviewed and investigated and will result in a response that is deemed necessary and appropriate to the circumstances. The project team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the project's leadership.
## Attribution
This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, available at [http://contributor-covenant.org/version/1/4][version]
[homepage]: http://contributor-covenant.org
[version]: http://contributor-covenant.org/version/1/4/

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# Coding style
## File format
Use [lv_misc/lv_templ.c](https://github.com/lvgl/lvgl/blob/master/src/lv_misc/lv_templ.c) and [lv_misc/lv_templ.h](https://github.com/lvgl/lvgl/blob/master/src/lv_misc/lv_templ.h)
## Naming conventions
* Words are separated by '_'
* In variable and function names use only lower case letters (e.g. *height_tmp*)
* In enums and defines use only upper case letters (e.g. *e.g. MAX_LINE_NUM*)
* Global names (API):
* starts with *lv*
* followed by module name: *btn*, *label*, *style* etc.
* followed by the action (for functions): *set*, *get*, *refr* etc.
* closed with the subject: *name*, *size*, *state* etc.
* Typedefs
* prefer `typedef struct` and `typedef enum` instead of `struct name` and `enum name`
* always end `typedef struct` and `typedef enum` type names with `_t`
* Abbreviations:
* Only words longer or equal than 6 characters can be abbreviated.
* Abbreviate only if it makes the word at least half as long
* Use only very straightforward and well-known abbreviations (e.g. pos: position, def: default, btn: button)
## Coding guide
* Functions:
* Try to write function shorter than is 50 lines
* Always shorter than 200 lines (except very straightforwards)
* Variables:
* One line, one declaration (BAD: char x, y;)
* Use `<stdint.h>` (*uint8_t*, *int32_t* etc)
* Declare variables where needed (not all at function start)
* Use the smallest required scope
* Variables in a file (outside functions) are always *static*
* Do not use global variables (use functions to set/get static variables)
## Comments
Before every function have a comment like this:
```c
/**
* Return with the screen of an object
* @param obj pointer to an object
* @return pointer to a screen
*/
lv_obj_t * lv_obj_get_scr(lv_obj_t * obj);
```
Always use `/* Something */` format and NOT `//Something`
Write readable code to avoid descriptive comments like:
`x++; /* Add 1 to x */`.
The code should show clearly what you are doing.
You should write **why** have you done this:
`x++; /*Because of closing '\0' of the string */`
Short "code summaries" of a few lines are accepted. E.g. `/*Calculate the new coordinates*/`
In comments use \` \` when referring to a variable. E.g. ``/*Update the value of `x_act`*/``
### Formatting
Here is example to show bracket placing and using of white spaces:
```c
/**
* Set a new text for a label. Memory will be allocated to store the text by the label.
* @param label pointer to a label object
* @param text '\0' terminated character string. NULL to refresh with the current text.
*/
void lv_label_set_text(lv_obj_t * label, const char * text)
{ /* Main brackets of functions in new line*/
if(label == NULL) return; /*No bracket only if the command is inline with the if statement*/
lv_obj_inv(label);
lv_label_ext_t * ext = lv_obj_get_ext(label);
/*Comment before a section */
if(text == ext->txt || text == NULL) { /*Bracket of statements start inline*/
lv_label_refr_text(label);
return;
}
...
}
```
Use 4 spaces indentation instead of tab.
You can use **astyle** to format the code. Run `code-formatter.sh` from the `scrips` folder.

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# Contributing to LVGL
Thank you for considering contributing to LVGL. If you have some spare time to spend with programming you will certainly find a way to helpimproving LVGL. Do not afraid to take the first step! Everybody is welcome independently from gender, age, color, location, or skill level. So don't be shy, pick a point from the list below that you are interested in, and let's go! :rocket:
- [Overview](#overview)
- [How to send a pull request?](#how-to-send-a-pull-request)
- [Help others in the Forum](help-others-in-the-forum)
- [Improve or translate the documentation](#improve-or-translate-the-documentation)
- [Write a blog post](#write-a-blog-post)
- [Report or fix bugs](#report-or-fix-bugs)
- [Suggest or implement new features](#suggest-or-implement-new-features)
- [Summary](#summary)
## Overview
There are many ways to join the community. If you have some time to work with us you will surely find something that fits you! You can:
- **Help others** in the [Forum](https://forum.lvgl.io).
- **Inspire people** by speaking about your project in [My project](https://forum.lvgl.io/c/my-projects) category in the Forum.
- **Improve and/or translate the documentation.** Go to the [Documentation](https://github.com/lvgl/docs) repository to learn more.
- **Write a blog post** about your experiences. See how to do it in the [Blog](https://github.com/lvgl/blog) repository
- **Report and/or fix bugs** in [GitHub's issue tracker](https://github.com/lvgl/lvgl/issues)
- **Help the development**. Check the [Open issues](https://github.com/lvgl/lvgl/issues) especially the ones with [Help wanted](https://github.com/lvgl/lvgl/issues?q=is%3Aissue+is%3Aopen+label%3A%22help+wanted%22) label and tell your ideas about a topic or implement a feature.
We have some simple rules:
- Be kind and friendly.
- Speak about one thing in one issue/topic.
- Give feedback and close the issue or mark the topic as solved if your question is answered.
- Tell what you experience or expect. _"The button is not working"_ is not enough info to get help.
- Use [Markdown](https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet) to format your post.
- We use the [Forum](https://forum.lvgl.io/) to ask and answer questions and [GitHub's issue tracker](https://github.com/lvgl/lvgl/issues) for development-related discussion.
- If possible send an absolute minimal code example in order to reproduce the issue
## How to send a pull request?
Merging new code into LVGL, documentation, blog, and examples happens via *Pull requests*. If you are still not familiar with Pull Requests (PR for short) here is a short guide. It's about the `lvgl` repository but it works the same way for other repositories too.
1. **Fork** the [lvgl repository](https://github.com/lvgl/lvgl). To do this click the "Fork" button in the top right corner. It will "copy" the `lvgl` repository to your GitHub account (`https://github.com/your_name?tab=repositories`)
2. **Clone** the forked repository and add your changes
3. **Create a PR** on GitHub from the page of your `lvgl` repository (`https://github.com/your_name/lvgl`) by hitting the "New pull request" button
4. **Set the base branch**. It means where you want to merge your update. Fixes go to `master`, new features to feature branch.
5. **Describe** what is in the update. An example code is welcome if applicable.
6. **Update** your `lvgl` branch with new commits. They will appear in the PR too.
Some advice:
- For non-trivial fixes and features it's better open an issue first to discuss the details.
- Maybe your fix or update won't be perfect at first. Don't be afraid, just improve it and push the new commits. The PR will be updated accordingly.
- If your update needs some extra work it's okay to say: _"I'm busy now and I will improve it soon"_ or _"Sorry, I don't have time to improve it, I hope it helps in this form too"_.
So it's better to say don't have time to continue than saying nothing.
- Please read and follow this [guide about the coding style](https://github.com/lvgl/lvgl/blob/master/docs/CODING_STYLE.md)
## Help others in the Forum
It's a great way to contribute to the library if you already use it.
Just go to [https://forum.lvgl.io/](https://forum.lvgl.io/) a register (Google and GitHub login also works).
Log in, read the titles and if you are already familiar with a topic, don't be shy, and write your suggestion.
## Improve or translate the documentation
If you would like to contribute to LVGL the documentation is the best place to start.
### Fix typos, add missing parts
If you find a typo, an obscure sentence or something which is not explained well enough in the [English documentation](https://docs.lvgl.io/en/html/index.html)
click the *"Edit on GitHub"* button in the top right corner and fix the issue by sending a Pull Request.
### Translate the documentation
If you have time and interest you can translate the documentation to your native language or any language you speak well.
You can join others to work on an already existing language or you can start a new one.
To translate the documentation we use [Zanata](https://zanata.org) which is an online translation platform.
You will find the LVGL project here: [LVGL on Zanata](https://translate.zanata.org/iteration/view/littlevgl-docs/v6.0-doc1?dswid=3430)
To get started you need to:
- register at [Zanata](https://zanata.org) which is an online translation platform.
- comment to [this post](https://forum.lvgl.io/t/translate-the-documentation/238?u=kisvegabor)
- tell your username at *Zanata* and your selected language(s) to get permission the edit the translations
Note that a translation will be added to the documentation only if the following parts are translated:
- [Home page](https://docs.lvgl.io/en/v7/)
- [Porting section](https://docs.lvgl.io/en/v7/html/porting/index.html)
- [Quick overview](https://docs.lvgl.io/v7/en/html/get-started/quick-overview.html)
## Write a blog post
Have you ported LVGL to a new platform or created a fancy GUI? Do you know a great trick?
You can share your knowledge on LVGL's blog! It's super easy to add your own post:
- Fork and clone the [blog repository](https://github.com/lvgl/blog)
- Add your post in Markdown to the `_posts` folder.
- Store the images and other resources in a dedicated folder in `assets`
- Create a Pull Request
The blog uses [Jekyll](https://jekyllrb.com/) to convert the `.md` files to a webpage. You can easily [run Jekyll offline](https://jekyllrb.com/docs/) to check your post before creating the Pull request
## Report or fix bugs
For simple bugfixes (typos, missing error handling, fixing a warning) it's fine to send a Pull request directly. However, for more complex bugs it's better to open an issue first. In the issue, you should describe how to reproduce the bug and add the minimal code snippet.
## Suggest or implement new features
If you have a good idea don't hesitate to share with us. It's even better if you have time to deal with its implementation. Don't be afraid if you still don't know LVGL well enough. We will help you to get started.
To share your ideas use [Feature request](https://forum.lvgl.io/c/feature-request/9) category of the forum.
If you are ready to get involved into the development of this faetures feel free to pen a [new issue](https://github.com/lvgl/lvgl/issues) for it on GitHub.
During the implementation don't forget the [Code style guide](https://github.com/lvgl/lvgl/blob/master/docs/CODING_STYLE.md).
If you implemented a new feature it's important to record it in the documentation and if applicable create an example for it:
- Go to the [docs](https://github.com/lvgl/docs/tree/master/v7/en) repository and update the relevant part of the English documentation.
- Go to the [examples](https://github.com/lvgl/lv_examples) repository and add a new file about the new feature in the related directory.
## Summary
I hope you have taken a liking to contribute to LVGL. A helpful and friendly community is waiting for you! :)

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{
"name": "lvgl",
"version": "v7.0.2",
"keywords": "graphics, gui, embedded, littlevgl",
"description": "Graphics library to create embedded GUI with easy-to-use graphical elements, beautiful visual effects and low memory footprint. It offers anti-aliasing, opacity, and animations using only one frame buffer.",
"repository":
{
"type": "git",
"url": "https://github.com/lvgl/lvgl.git"
},
"build": {
"includeDir": "."
}
}

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/**
* @file lv_conf.h
* Configuration file for LVGL v7.0.2
*/
/*
* COPY THIS FILE AS `lv_conf.h` NEXT TO the `lvgl` FOLDER
*/
#if 0 /*Set it to "1" to enable content*/
#ifndef LV_CONF_H
#define LV_CONF_H
/* clang-format off */
#include <stdint.h>
/*====================
Graphical settings
*====================*/
/* Maximal horizontal and vertical resolution to support by the library.*/
#define LV_HOR_RES_MAX (480)
#define LV_VER_RES_MAX (320)
/* Color depth:
* - 1: 1 byte per pixel
* - 8: RGB332
* - 16: RGB565
* - 32: ARGB8888
*/
#define LV_COLOR_DEPTH 16
/* Swap the 2 bytes of RGB565 color.
* Useful if the display has a 8 bit interface (e.g. SPI)*/
#define LV_COLOR_16_SWAP 0
/* 1: Enable screen transparency.
* Useful for OSD or other overlapping GUIs.
* Requires `LV_COLOR_DEPTH = 32` colors and the screen's style should be modified: `style.body.opa = ...`*/
#define LV_COLOR_SCREEN_TRANSP 0
/*Images pixels with this color will not be drawn (with chroma keying)*/
#define LV_COLOR_TRANSP LV_COLOR_LIME /*LV_COLOR_LIME: pure green*/
/* Enable anti-aliasing (lines, and radiuses will be smoothed) */
#define LV_ANTIALIAS 1
/* Default display refresh period.
* Can be changed in the display driver (`lv_disp_drv_t`).*/
#define LV_DISP_DEF_REFR_PERIOD 30 /*[ms]*/
/* Dot Per Inch: used to initialize default sizes.
* E.g. a button with width = LV_DPI / 2 -> half inch wide
* (Not so important, you can adjust it to modify default sizes and spaces)*/
#define LV_DPI 130 /*[px]*/
/* The the real width of the display changes some default values:
* default object sizes, layout of examples, etc.
* According to the width of the display (hor. res. / dpi)
* the displays fall in 4 categories.
* The 4th is extra large which has no upper limit so not listed here
* The upper limit of the categories are set below in 0.1 inch unit.
*/
#define LV_DISP_SMALL_LIMIT 30
#define LV_DISP_MEDIUM_LIMIT 50
#define LV_DISP_LARGE_LIMIT 70
/* Type of coordinates. Should be `int16_t` (or `int32_t` for extreme cases) */
typedef int16_t lv_coord_t;
/*=========================
Memory manager settings
*=========================*/
/* LittelvGL's internal memory manager's settings.
* The graphical objects and other related data are stored here. */
/* 1: use custom malloc/free, 0: use the built-in `lv_mem_alloc` and `lv_mem_free` */
#define LV_MEM_CUSTOM 0
#if LV_MEM_CUSTOM == 0
/* Size of the memory used by `lv_mem_alloc` in bytes (>= 2kB)*/
# define LV_MEM_SIZE (32U * 1024U)
/* Complier prefix for a big array declaration */
# define LV_MEM_ATTR
/* Set an address for the memory pool instead of allocating it as an array.
* Can be in external SRAM too. */
# define LV_MEM_ADR 0
/* Automatically defrag. on free. Defrag. means joining the adjacent free cells. */
# define LV_MEM_AUTO_DEFRAG 1
#else /*LV_MEM_CUSTOM*/
# define LV_MEM_CUSTOM_INCLUDE <stdlib.h> /*Header for the dynamic memory function*/
# define LV_MEM_CUSTOM_ALLOC malloc /*Wrapper to malloc*/
# define LV_MEM_CUSTOM_FREE free /*Wrapper to free*/
#endif /*LV_MEM_CUSTOM*/
/* Garbage Collector settings
* Used if lvgl is binded to higher level language and the memory is managed by that language */
#define LV_ENABLE_GC 0
#if LV_ENABLE_GC != 0
# define LV_GC_INCLUDE "gc.h" /*Include Garbage Collector related things*/
# define LV_MEM_CUSTOM_REALLOC your_realloc /*Wrapper to realloc*/
# define LV_MEM_CUSTOM_GET_SIZE your_mem_get_size /*Wrapper to lv_mem_get_size*/
#endif /* LV_ENABLE_GC */
/*=======================
Input device settings
*=======================*/
/* Input device default settings.
* Can be changed in the Input device driver (`lv_indev_drv_t`)*/
/* Input device read period in milliseconds */
#define LV_INDEV_DEF_READ_PERIOD 30
/* Drag threshold in pixels */
#define LV_INDEV_DEF_DRAG_LIMIT 10
/* Drag throw slow-down in [%]. Greater value -> faster slow-down */
#define LV_INDEV_DEF_DRAG_THROW 10
/* Long press time in milliseconds.
* Time to send `LV_EVENT_LONG_PRESSSED`) */
#define LV_INDEV_DEF_LONG_PRESS_TIME 400
/* Repeated trigger period in long press [ms]
* Time between `LV_EVENT_LONG_PRESSED_REPEAT */
#define LV_INDEV_DEF_LONG_PRESS_REP_TIME 100
/* Gesture threshold in pixels */
#define LV_INDEV_DEF_GESTURE_LIMIT 50
/* Gesture min velocity at release before swipe (pixels)*/
#define LV_INDEV_DEF_GESTURE_MIN_VELOCITY 3
/*==================
* Feature usage
*==================*/
/*1: Enable the Animations */
#define LV_USE_ANIMATION 1
#if LV_USE_ANIMATION
/*Declare the type of the user data of animations (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_anim_user_data_t;
#endif
/* 1: Enable shadow drawing*/
#define LV_USE_SHADOW 1
#if LV_USE_SHADOW
/* Allow buffering some shadow calculation
* LV_SHADOW_CACHE_SIZE is the max. shadow size to buffer,
* where shadow size is `shadow_width + radius`
* Caching has LV_SHADOW_CACHE_SIZE^2 RAM cost*/
#define LV_SHADOW_CACHE_SIZE 0
#endif
/* 1: Use other blend modes than normal (`LV_BLEND_MODE_...`)*/
#define LV_USE_BLEND_MODES 1
/* 1: Use the `opa_scale` style property to set the opacity of an object and its children at once*/
#define LV_USE_OPA_SCALE 1
/* 1: Use image zoom and rotation*/
#define LV_USE_IMG_TRANSFORM 1
/* 1: Enable object groups (for keyboard/encoder navigation) */
#define LV_USE_GROUP 1
#if LV_USE_GROUP
typedef void * lv_group_user_data_t;
#endif /*LV_USE_GROUP*/
/* 1: Enable GPU interface*/
#define LV_USE_GPU 1 /*Only enables `gpu_fill_cb` and `gpu_blend_cb` in the disp. drv- */
#define LV_USE_GPU_STM32_DMA2D 0
/* 1: Enable file system (might be required for images */
#define LV_USE_FILESYSTEM 1
#if LV_USE_FILESYSTEM
/*Declare the type of the user data of file system drivers (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_fs_drv_user_data_t;
#endif
/*1: Add a `user_data` to drivers and objects*/
#define LV_USE_USER_DATA 0
/*1: Show CPU usage and FPS count in the right bottom corner*/
#define LV_USE_PERF_MONITOR 0
/*1: Use the functions and types from the older API if possible */
#define LV_USE_API_EXTENSION_V6 1
/*========================
* Image decoder and cache
*========================*/
/* 1: Enable indexed (palette) images */
#define LV_IMG_CF_INDEXED 1
/* 1: Enable alpha indexed images */
#define LV_IMG_CF_ALPHA 1
/* Default image cache size. Image caching keeps the images opened.
* If only the built-in image formats are used there is no real advantage of caching.
* (I.e. no new image decoder is added)
* With complex image decoders (e.g. PNG or JPG) caching can save the continuous open/decode of images.
* However the opened images might consume additional RAM.
* LV_IMG_CACHE_DEF_SIZE must be >= 1 */
#define LV_IMG_CACHE_DEF_SIZE 1
/*Declare the type of the user data of image decoder (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_img_decoder_user_data_t;
/*=====================
* Compiler settings
*====================*/
/* Define a custom attribute to `lv_tick_inc` function */
#define LV_ATTRIBUTE_TICK_INC
/* Define a custom attribute to `lv_task_handler` function */
#define LV_ATTRIBUTE_TASK_HANDLER
/* Define a custom attribute to `lv_disp_flush_ready` function */
#define LV_ATTRIBUTE_FLUSH_READY
/* With size optimization (-Os) the compiler might not align data to
* 4 or 8 byte boundary. This alignment will be explicitly applied where needed.
* E.g. __attribute__((aligned(4))) */
#define LV_ATTRIBUTE_MEM_ALIGN
/* Attribute to mark large constant arrays for example
* font's bitmaps */
#define LV_ATTRIBUTE_LARGE_CONST
/* Prefix performance critical functions to place them into a faster memory (e.g RAM)
* Uses 15-20 kB extra memory */
#define LV_ATTRIBUTE_FAST_MEM
/* Export integer constant to binding.
* This macro is used with constants in the form of LV_<CONST> that
* should also appear on lvgl binding API such as Micropython
*
* The default value just prevents a GCC warning.
*/
#define LV_EXPORT_CONST_INT(int_value) struct _silence_gcc_warning
/*===================
* HAL settings
*==================*/
/* 1: use a custom tick source.
* It removes the need to manually update the tick with `lv_tick_inc`) */
#define LV_TICK_CUSTOM 0
#if LV_TICK_CUSTOM == 1
#define LV_TICK_CUSTOM_INCLUDE "something.h" /*Header for the sys time function*/
#define LV_TICK_CUSTOM_SYS_TIME_EXPR (millis()) /*Expression evaluating to current systime in ms*/
#endif /*LV_TICK_CUSTOM*/
typedef void * lv_disp_drv_user_data_t; /*Type of user data in the display driver*/
typedef void * lv_indev_drv_user_data_t; /*Type of user data in the input device driver*/
/*================
* Log settings
*===============*/
/*1: Enable the log module*/
#define LV_USE_LOG 0
#if LV_USE_LOG
/* How important log should be added:
* LV_LOG_LEVEL_TRACE A lot of logs to give detailed information
* LV_LOG_LEVEL_INFO Log important events
* LV_LOG_LEVEL_WARN Log if something unwanted happened but didn't cause a problem
* LV_LOG_LEVEL_ERROR Only critical issue, when the system may fail
* LV_LOG_LEVEL_NONE Do not log anything
*/
# define LV_LOG_LEVEL LV_LOG_LEVEL_WARN
/* 1: Print the log with 'printf';
* 0: user need to register a callback with `lv_log_register_print_cb`*/
# define LV_LOG_PRINTF 0
#endif /*LV_USE_LOG*/
/*=================
* Debug settings
*================*/
/* If Debug is enabled LittelvGL validates the parameters of the functions.
* If an invalid parameter is found an error log message is printed and
* the MCU halts at the error. (`LV_USE_LOG` should be enabled)
* If you are debugging the MCU you can pause
* the debugger to see exactly where the issue is.
*
* The behavior of asserts can be overwritten by redefining them here.
* E.g. #define LV_ASSERT_MEM(p) <my_assert_code>
*/
#define LV_USE_DEBUG 1
#if LV_USE_DEBUG
/*Check if the parameter is NULL. (Quite fast) */
#define LV_USE_ASSERT_NULL 1
/*Checks is the memory is successfully allocated or no. (Quite fast)*/
#define LV_USE_ASSERT_MEM 1
/*Check the integrity of `lv_mem` after critical operations. (Slow)*/
#define LV_USE_ASSERT_MEM_INTEGRITY 0
/* Check the strings.
* Search for NULL, very long strings, invalid characters, and unnatural repetitions. (Slow)
* If disabled `LV_USE_ASSERT_NULL` will be performed instead (if it's enabled) */
#define LV_USE_ASSERT_STR 0
/* Check NULL, the object's type and existence (e.g. not deleted). (Quite slow)
* If disabled `LV_USE_ASSERT_NULL` will be performed instead (if it's enabled) */
#define LV_USE_ASSERT_OBJ 0
/*Check if the styles are properly initialized. (Fast)*/
#define LV_USE_ASSERT_STYLE 0
#endif /*LV_USE_DEBUG*/
/*==================
* FONT USAGE
*===================*/
/* The built-in fonts contains the ASCII range and some Symbols with 4 bit-per-pixel.
* The symbols are available via `LV_SYMBOL_...` defines
* More info about fonts: https://docs.lvgl.io/v7/en/html/overview/font.html
* To create a new font go to: https://lvgl.com/ttf-font-to-c-array
*/
/* Montserrat fonts with bpp = 4
* https://fonts.google.com/specimen/Montserrat */
#define LV_FONT_MONTSERRAT_12 0
#define LV_FONT_MONTSERRAT_14 0
#define LV_FONT_MONTSERRAT_16 1
#define LV_FONT_MONTSERRAT_18 0
#define LV_FONT_MONTSERRAT_20 0
#define LV_FONT_MONTSERRAT_22 0
#define LV_FONT_MONTSERRAT_24 0
#define LV_FONT_MONTSERRAT_26 0
#define LV_FONT_MONTSERRAT_28 0
#define LV_FONT_MONTSERRAT_30 0
#define LV_FONT_MONTSERRAT_32 0
#define LV_FONT_MONTSERRAT_34 0
#define LV_FONT_MONTSERRAT_36 0
#define LV_FONT_MONTSERRAT_38 0
#define LV_FONT_MONTSERRAT_40 0
#define LV_FONT_MONTSERRAT_42 0
#define LV_FONT_MONTSERRAT_44 0
#define LV_FONT_MONTSERRAT_46 0
#define LV_FONT_MONTSERRAT_48 0
/* Demonstrate special features */
#define LV_FONT_MONTSERRAT_12_SUBPX 0
#define LV_FONT_MONTSERRAT_28_COMPRESSED 0 /*bpp = 3*/
#define LV_FONT_DEJAVU_16_PERSIAN_HEBREW 0 /*Hebrew, Arabic, PErisan letters and all their forms*/
#define LV_FONT_SIMSUN_16_CJK 0 /*1000 most common CJK radicals*/
/*Pixel perfect monospace font
* http://pelulamu.net/unscii/ */
#define LV_FONT_UNSCII_8 0
/* Optionally declare your custom fonts here.
* You can use these fonts as default font too
* and they will be available globally. E.g.
* #define LV_FONT_CUSTOM_DECLARE LV_FONT_DECLARE(my_font_1) \
* LV_FONT_DECLARE(my_font_2)
*/
#define LV_FONT_CUSTOM_DECLARE
/* Enable it if you have fonts with a lot of characters.
* The limit depends on the font size, font face and bpp
* but with > 10,000 characters if you see issues probably you need to enable it.*/
#define LV_FONT_FMT_TXT_LARGE 0
/* Set the pixel order of the display.
* Important only if "subpx fonts" are used.
* With "normal" font it doesn't matter.
*/
#define LV_FONT_SUBPX_BGR 0
/*Declare the type of the user data of fonts (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_font_user_data_t;
/*================
* THEME USAGE
*================*/
/*Always enable at least on theme*/
/* No theme, you can apply your styles as you need
* No flags. Set LV_THEME_DEFAULT_FLAG 0 */
#define LV_USE_THEME_EMPTY 1
/*Simple to the create your theme based on it
* No flags. Set LV_THEME_DEFAULT_FLAG 0 */
#define LV_USE_THEME_TEMPLATE 1
/* A fast and impressive theme.
* Flags:
* LV_THEME_MATERIAL_FLAG_LIGHT: light theme
* LV_THEME_MATERIAL_FLAG_DARK: dark theme*/
#define LV_USE_THEME_MATERIAL 1
/* Mono-color theme for monochrome displays.
* If LV_THEME_DEFAULT_COLOR_PRIMARY is LV_COLOR_BLACK the
* texts and borders will be black and the background will be
* white. Else the colors are inverted.
* No flags. Set LV_THEME_DEFAULT_FLAG 0 */
#define LV_USE_THEME_MONO 1
#define LV_THEME_DEFAULT_INCLUDE <stdint.h> /*Include a header for the init. function*/
#define LV_THEME_DEFAULT_INIT lv_theme_material_init
#define LV_THEME_DEFAULT_COLOR_PRIMARY LV_COLOR_RED
#define LV_THEME_DEFAULT_COLOR_SECONDARY LV_COLOR_BLUE
#define LV_THEME_DEFAULT_FLAG LV_THEME_MATERIAL_FLAG_LIGHT
#define LV_THEME_DEFAULT_FONT_SMALL &lv_font_montserrat_16
#define LV_THEME_DEFAULT_FONT_NORMAL &lv_font_montserrat_16
#define LV_THEME_DEFAULT_FONT_SUBTITLE &lv_font_montserrat_16
#define LV_THEME_DEFAULT_FONT_TITLE &lv_font_montserrat_16
/*=================
* Text settings
*=================*/
/* Select a character encoding for strings.
* Your IDE or editor should have the same character encoding
* - LV_TXT_ENC_UTF8
* - LV_TXT_ENC_ASCII
* */
#define LV_TXT_ENC LV_TXT_ENC_UTF8
/*Can break (wrap) texts on these chars*/
#define LV_TXT_BREAK_CHARS " ,.;:-_"
/* If a word is at least this long, will break wherever "prettiest"
* To disable, set to a value <= 0 */
#define LV_TXT_LINE_BREAK_LONG_LEN 0
/* Minimum number of characters in a long word to put on a line before a break.
* Depends on LV_TXT_LINE_BREAK_LONG_LEN. */
#define LV_TXT_LINE_BREAK_LONG_PRE_MIN_LEN 3
/* Minimum number of characters in a long word to put on a line after a break.
* Depends on LV_TXT_LINE_BREAK_LONG_LEN. */
#define LV_TXT_LINE_BREAK_LONG_POST_MIN_LEN 3
/* The control character to use for signalling text recoloring. */
#define LV_TXT_COLOR_CMD "#"
/* Support bidirectional texts.
* Allows mixing Left-to-Right and Right-to-Left texts.
* The direction will be processed according to the Unicode Bidirectioanl Algorithm:
* https://www.w3.org/International/articles/inline-bidi-markup/uba-basics*/
#define LV_USE_BIDI 0
#if LV_USE_BIDI
/* Set the default direction. Supported values:
* `LV_BIDI_DIR_LTR` Left-to-Right
* `LV_BIDI_DIR_RTL` Right-to-Left
* `LV_BIDI_DIR_AUTO` detect texts base direction */
#define LV_BIDI_BASE_DIR_DEF LV_BIDI_DIR_AUTO
#endif
/* Enable Arabic/Persian processing
* In these languages characters should be replaced with
* an other form based on their position in the text */
#define LV_USE_ARABIC_PERSIAN_CHARS 0
/*Change the built in (v)snprintf functions*/
#define LV_SPRINTF_CUSTOM 0
#if LV_SPRINTF_CUSTOM
# define LV_SPRINTF_INCLUDE <stdio.h>
# define lv_snprintf snprintf
# define lv_vsnprintf vsnprintf
#else /*!LV_SPRINTF_CUSTOM*/
# define LV_SPRINTF_DISABLE_FLOAT 1
#endif /*LV_SPRINTF_CUSTOM*/
/*===================
* LV_OBJ SETTINGS
*==================*/
#if LV_USE_USER_DATA
/*Declare the type of the user data of object (can be e.g. `void *`, `int`, `struct`)*/
typedef void * lv_obj_user_data_t;
/*Provide a function to free user data*/
#define LV_USE_USER_DATA_FREE 0
#if LV_USE_USER_DATA_FREE
# define LV_USER_DATA_FREE_INCLUDE "something.h" /*Header for user data free function*/
/* Function prototype : void user_data_free(lv_obj_t * obj); */
# define LV_USER_DATA_FREE (user_data_free) /*Invoking for user data free function*/
#endif
#endif
/*1: enable `lv_obj_realign()` based on `lv_obj_align()` parameters*/
#define LV_USE_OBJ_REALIGN 1
/* Enable to make the object clickable on a larger area.
* LV_EXT_CLICK_AREA_OFF or 0: Disable this feature
* LV_EXT_CLICK_AREA_TINY: The extra area can be adjusted horizontally and vertically (0..255 px)
* LV_EXT_CLICK_AREA_FULL: The extra area can be adjusted in all 4 directions (-32k..+32k px)
*/
#define LV_USE_EXT_CLICK_AREA LV_EXT_CLICK_AREA_TINY
/*==================
* LV OBJ X USAGE
*================*/
/*
* Documentation of the object types: https://docs.lvgl.com/#Object-types
*/
/*Arc (dependencies: -)*/
#define LV_USE_ARC 1
/*Bar (dependencies: -)*/
#define LV_USE_BAR 1
/*Button (dependencies: lv_cont*/
#define LV_USE_BTN 1
/*Button matrix (dependencies: -)*/
#define LV_USE_BTNMATRIX 1
/*Calendar (dependencies: -)*/
#define LV_USE_CALENDAR 1
/*Canvas (dependencies: lv_img)*/
#define LV_USE_CANVAS 1
/*Check box (dependencies: lv_btn, lv_label)*/
#define LV_USE_CHECKBOX 1
/*Chart (dependencies: -)*/
#define LV_USE_CHART 1
#if LV_USE_CHART
# define LV_CHART_AXIS_TICK_LABEL_MAX_LEN 256
#endif
/*Container (dependencies: -*/
#define LV_USE_CONT 1
/*Color picker (dependencies: -*/
#define LV_USE_CPICKER 1
/*Drop down list (dependencies: lv_page, lv_label, lv_symbol_def.h)*/
#define LV_USE_DROPDOWN 1
#if LV_USE_DROPDOWN != 0
/*Open and close default animation time [ms] (0: no animation)*/
# define LV_DROPDOWN_DEF_ANIM_TIME 200
#endif
/*Gauge (dependencies:lv_bar, lv_linemeter)*/
#define LV_USE_GAUGE 1
/*Image (dependencies: lv_label*/
#define LV_USE_IMG 1
/*Image Button (dependencies: lv_btn*/
#define LV_USE_IMGBTN 1
#if LV_USE_IMGBTN
/*1: The imgbtn requires left, mid and right parts and the width can be set freely*/
# define LV_IMGBTN_TILED 0
#endif
/*Keyboard (dependencies: lv_btnm)*/
#define LV_USE_KEYBOARD 1
/*Label (dependencies: -*/
#define LV_USE_LABEL 1
#if LV_USE_LABEL != 0
/*Hor, or ver. scroll speed [px/sec] in 'LV_LABEL_LONG_ROLL/ROLL_CIRC' mode*/
# define LV_LABEL_DEF_SCROLL_SPEED 25
/* Waiting period at beginning/end of animation cycle */
# define LV_LABEL_WAIT_CHAR_COUNT 3
/*Enable selecting text of the label */
# define LV_LABEL_TEXT_SEL 0
/*Store extra some info in labels (12 bytes) to speed up drawing of very long texts*/
# define LV_LABEL_LONG_TXT_HINT 0
#endif
/*LED (dependencies: -)*/
#define LV_USE_LED 1
#if LV_USE_LED
# define LV_LED_BRIGHT_MIN 120 /*Minimal brightness*/
# define LV_LED_BRIGHT_MAX 255 /*Maximal brightness*/
#endif
/*Line (dependencies: -*/
#define LV_USE_LINE 1
/*List (dependencies: lv_page, lv_btn, lv_label, (lv_img optionally for icons ))*/
#define LV_USE_LIST 1
#if LV_USE_LIST != 0
/*Default animation time of focusing to a list element [ms] (0: no animation) */
# define LV_LIST_DEF_ANIM_TIME 100
#endif
/*Line meter (dependencies: *;)*/
#define LV_USE_LINEMETER 1
#if LV_USE_LINEMETER
/* Draw line more precisely at cost of performance.
* Useful if there are lot of lines any minor are visible
* 0: No extra precision
* 1: Some extra precision
* 2: Best precision
*/
# define LV_LINEMETER_PRECISE 0
#endif
/*Mask (dependencies: -)*/
#define LV_USE_OBJMASK 1
/*Message box (dependencies: lv_rect, lv_btnm, lv_label)*/
#define LV_USE_MSGBOX 1
/*Page (dependencies: lv_cont)*/
#define LV_USE_PAGE 1
#if LV_USE_PAGE != 0
/*Focus default animation time [ms] (0: no animation)*/
# define LV_PAGE_DEF_ANIM_TIME 400
#endif
/*Preload (dependencies: lv_arc, lv_anim)*/
#define LV_USE_SPINNER 1
#if LV_USE_SPINNER != 0
# define LV_SPINNER_DEF_ARC_LENGTH 60 /*[deg]*/
# define LV_SPINNER_DEF_SPIN_TIME 1000 /*[ms]*/
# define LV_SPINNER_DEF_ANIM LV_SPINNER_TYPE_SPINNING_ARC
#endif
/*Roller (dependencies: lv_ddlist)*/
#define LV_USE_ROLLER 1
#if LV_USE_ROLLER != 0
/*Focus animation time [ms] (0: no animation)*/
# define LV_ROLLER_DEF_ANIM_TIME 200
/*Number of extra "pages" when the roller is infinite*/
# define LV_ROLLER_INF_PAGES 7
#endif
/*Slider (dependencies: lv_bar)*/
#define LV_USE_SLIDER 1
/*Spinbox (dependencies: lv_ta)*/
#define LV_USE_SPINBOX 1
/*Switch (dependencies: lv_slider)*/
#define LV_USE_SWITCH 1
/*Text area (dependencies: lv_label, lv_page)*/
#define LV_USE_TEXTAREA 1
#if LV_USE_TEXTAREA != 0
# define LV_TEXTAREA_DEF_CURSOR_BLINK_TIME 400 /*ms*/
# define LV_TEXTAREA_DEF_PWD_SHOW_TIME 1500 /*ms*/
#endif
/*Table (dependencies: lv_label)*/
#define LV_USE_TABLE 1
#if LV_USE_TABLE
# define LV_TABLE_COL_MAX 12
#endif
/*Tab (dependencies: lv_page, lv_btnm)*/
#define LV_USE_TABVIEW 1
# if LV_USE_TABVIEW != 0
/*Time of slide animation [ms] (0: no animation)*/
# define LV_TABVIEW_DEF_ANIM_TIME 300
#endif
/*Tileview (dependencies: lv_page) */
#define LV_USE_TILEVIEW 1
#if LV_USE_TILEVIEW
/*Time of slide animation [ms] (0: no animation)*/
# define LV_TILEVIEW_DEF_ANIM_TIME 300
#endif
/*Window (dependencies: lv_cont, lv_btn, lv_label, lv_img, lv_page)*/
#define LV_USE_WIN 1
/*==================
* Non-user section
*==================*/
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS) /* Disable warnings for Visual Studio*/
# define _CRT_SECURE_NO_WARNINGS
#endif
/*--END OF LV_CONF_H--*/
#endif /*LV_CONF_H*/
#endif /*End of "Content enable"*/

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/**
* @file lvgl.h
* Include all LittleV GL related headers
*/
#ifndef LVGL_H
#define LVGL_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "src/lv_misc/lv_log.h"
#include "src/lv_misc/lv_task.h"
#include "src/lv_misc/lv_math.h"
#include "src/lv_misc/lv_async.h"
#include "src/lv_hal/lv_hal.h"
#include "src/lv_core/lv_obj.h"
#include "src/lv_core/lv_group.h"
#include "src/lv_core/lv_indev.h"
#include "src/lv_core/lv_refr.h"
#include "src/lv_core/lv_disp.h"
#include "src/lv_themes/lv_theme.h"
#include "src/lv_font/lv_font.h"
#include "src/lv_font/lv_font_fmt_txt.h"
#include "src/lv_misc/lv_printf.h"
#include "src/lv_widgets/lv_btn.h"
#include "src/lv_widgets/lv_imgbtn.h"
#include "src/lv_widgets/lv_img.h"
#include "src/lv_widgets/lv_label.h"
#include "src/lv_widgets/lv_line.h"
#include "src/lv_widgets/lv_page.h"
#include "src/lv_widgets/lv_cont.h"
#include "src/lv_widgets/lv_list.h"
#include "src/lv_widgets/lv_chart.h"
#include "src/lv_widgets/lv_table.h"
#include "src/lv_widgets/lv_checkbox.h"
#include "src/lv_widgets/lv_cpicker.h"
#include "src/lv_widgets/lv_bar.h"
#include "src/lv_widgets/lv_slider.h"
#include "src/lv_widgets/lv_led.h"
#include "src/lv_widgets/lv_btnmatrix.h"
#include "src/lv_widgets/lv_keyboard.h"
#include "src/lv_widgets/lv_dropdown.h"
#include "src/lv_widgets/lv_roller.h"
#include "src/lv_widgets/lv_textarea.h"
#include "src/lv_widgets/lv_canvas.h"
#include "src/lv_widgets/lv_win.h"
#include "src/lv_widgets/lv_tabview.h"
#include "src/lv_widgets/lv_tileview.h"
#include "src/lv_widgets/lv_msgbox.h"
#include "src/lv_widgets/lv_objmask.h"
#include "src/lv_widgets/lv_gauge.h"
#include "src/lv_widgets/lv_linemeter.h"
#include "src/lv_widgets/lv_switch.h"
#include "src/lv_widgets/lv_arc.h"
#include "src/lv_widgets/lv_spinner.h"
#include "src/lv_widgets/lv_calendar.h"
#include "src/lv_widgets/lv_spinbox.h"
#include "src/lv_draw/lv_img_cache.h"
#include "src/lv_api_map.h"
/*********************
* DEFINES
*********************/
/*Current version of LVGL*/
#define LVGL_VERSION_MAJOR 7
#define LVGL_VERSION_MINOR 0
#define LVGL_VERSION_PATCH 2
#define LVGL_VERSION_INFO ""
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* MACROS
**********************/
/** Gives 1 if the x.y.z version is supported in the current version
* Usage:
*
* - Require v6
* #if LV_VERSION_CHECK(6,0,0)
* new_func_in_v6();
* #endif
*
*
* - Require at least v5.3
* #if LV_VERSION_CHECK(5,3,0)
* new_feature_from_v5_3();
* #endif
*
*
* - Require v5.3.2 bugfixes
* #if LV_VERSION_CHECK(5,3,2)
* bugfix_in_v5_3_2();
* #endif
*
* */
#define LV_VERSION_CHECK(x,y,z) (x == LVGL_VERSION_MAJOR && (y < LVGL_VERSION_MINOR || (y == LVGL_VERSION_MINOR && z <= LVGL_VERSION_PATCH)))
#ifdef __cplusplus
}
#endif
#endif /*LVGL_H*/

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include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_core/lv_core.mk
include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_hal/lv_hal.mk
include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_widgets/lv_widgets.mk
include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_font/lv_font.mk
include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_misc/lv_misc.mk
include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_themes/lv_themes.mk
include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_draw/lv_draw.mk
include $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_gpu/lv_gpu.mk

196
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/**
* @file lv_port_disp_templ.c
*
*/
/*Copy this file as "lv_port_disp.c" and set this value to "1" to enable content*/
#if 0
/*********************
* INCLUDES
*********************/
#include "lv_port_disp_template.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void disp_init(void);
static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p);
#if LV_USE_GPU
static void gpu_blend(lv_disp_drv_t * disp_drv, lv_color_t * dest, const lv_color_t * src, uint32_t length, lv_opa_t opa);
static void gpu_fill(lv_disp_drv_t * disp_drv, lv_color_t * dest_buf, lv_coord_t dest_width,
const lv_area_t * fill_area, lv_color_t color);
#endif
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void lv_port_disp_init(void)
{
/*-------------------------
* Initialize your display
* -----------------------*/
disp_init();
/*-----------------------------
* Create a buffer for drawing
*----------------------------*/
/* LVGL requires a buffer where it draws the objects. The buffer's has to be greater than 1 display row
*
* There are three buffering configurations:
* 1. Create ONE buffer with some rows:
* LVGL will draw the display's content here and writes it to your display
*
* 2. Create TWO buffer with some rows:
* LVGL will draw the display's content to a buffer and writes it your display.
* You should use DMA to write the buffer's content to the display.
* It will enable LVGL to draw the next part of the screen to the other buffer while
* the data is being sent form the first buffer. It makes rendering and flushing parallel.
*
* 3. Create TWO screen-sized buffer:
* Similar to 2) but the buffer have to be screen sized. When LVGL is ready it will give the
* whole frame to display. This way you only need to change the frame buffer's address instead of
* copying the pixels.
* */
/* Example for 1) */
static lv_disp_buf_t disp_buf_1;
static lv_color_t buf1_1[LV_HOR_RES_MAX * 10]; /*A buffer for 10 rows*/
lv_disp_buf_init(&disp_buf_1, buf1_1, NULL, LV_HOR_RES_MAX * 10); /*Initialize the display buffer*/
/* Example for 2) */
static lv_disp_buf_t disp_buf_2;
static lv_color_t buf2_1[LV_HOR_RES_MAX * 10]; /*A buffer for 10 rows*/
static lv_color_t buf2_2[LV_HOR_RES_MAX * 10]; /*An other buffer for 10 rows*/
lv_disp_buf_init(&disp_buf_2, buf2_1, buf2_2, LV_HOR_RES_MAX * 10); /*Initialize the display buffer*/
/* Example for 3) */
static lv_disp_buf_t disp_buf_3;
static lv_color_t buf3_1[LV_HOR_RES_MAX * LV_VER_RES_MAX]; /*A screen sized buffer*/
static lv_color_t buf3_2[LV_HOR_RES_MAX * LV_VER_RES_MAX]; /*An other screen sized buffer*/
lv_disp_buf_init(&disp_buf_3, buf3_1, buf3_2, LV_HOR_RES_MAX * LV_VER_RES_MAX); /*Initialize the display buffer*/
/*-----------------------------------
* Register the display in LVGL
*----------------------------------*/
lv_disp_drv_t disp_drv; /*Descriptor of a display driver*/
lv_disp_drv_init(&disp_drv); /*Basic initialization*/
/*Set up the functions to access to your display*/
/*Set the resolution of the display*/
disp_drv.hor_res = 480;
disp_drv.ver_res = 320;
/*Used to copy the buffer's content to the display*/
disp_drv.flush_cb = disp_flush;
/*Set a display buffer*/
disp_drv.buffer = &disp_buf_2;
#if LV_USE_GPU
/*Optionally add functions to access the GPU. (Only in buffered mode, LV_VDB_SIZE != 0)*/
/*Blend two color array using opacity*/
disp_drv.gpu_blend_cb = gpu_blend;
/*Fill a memory array with a color*/
disp_drv.gpu_fill_cb = gpu_fill;
#endif
/*Finally register the driver*/
lv_disp_drv_register(&disp_drv);
}
/**********************
* STATIC FUNCTIONS
**********************/
/* Initialize your display and the required peripherals. */
static void disp_init(void)
{
/*You code here*/
}
/* Flush the content of the internal buffer the specific area on the display
* You can use DMA or any hardware acceleration to do this operation in the background but
* 'lv_disp_flush_ready()' has to be called when finished. */
static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)
{
/*The most simple case (but also the slowest) to put all pixels to the screen one-by-one*/
int32_t x;
int32_t y;
for(y = area->y1; y <= area->y2; y++) {
for(x = area->x1; x <= area->x2; x++) {
/* Put a pixel to the display. For example: */
/* put_px(x, y, *color_p)*/
color_p++;
}
}
/* IMPORTANT!!!
* Inform the graphics library that you are ready with the flushing*/
lv_disp_flush_ready(disp_drv);
}
/*OPTIONAL: GPU INTERFACE*/
#if LV_USE_GPU
/* If your MCU has hardware accelerator (GPU) then you can use it to blend to memories using opacity
* It can be used only in buffered mode (LV_VDB_SIZE != 0 in lv_conf.h)*/
static void gpu_blend(lv_disp_drv_t * disp_drv, lv_color_t * dest, const lv_color_t * src, uint32_t length, lv_opa_t opa)
{
/*It's an example code which should be done by your GPU*/
uint32_t i;
for(i = 0; i < length; i++) {
dest[i] = lv_color_mix(dest[i], src[i], opa);
}
}
/* If your MCU has hardware accelerator (GPU) then you can use it to fill a memory with a color
* It can be used only in buffered mode (LV_VDB_SIZE != 0 in lv_conf.h)*/
static void gpu_fill(lv_disp_drv_t * disp_drv, lv_color_t * dest_buf, lv_coord_t dest_width,
const lv_area_t * fill_area, lv_color_t color)
{
/*It's an example code which should be done by your GPU*/
int32_t x, y;
dest_buf += dest_width * fill_area->y1; /*Go to the first line*/
for(y = fill_area->y1; y <= fill_area->y2; y++) {
for(x = fill_area->x1; x <= fill_area->x2; x++) {
dest_buf[x] = color;
}
dest_buf+=dest_width; /*Go to the next line*/
}
}
#endif /*LV_USE_GPU*/
#else /* Enable this file at the top */
/* This dummy typedef exists purely to silence -Wpedantic. */
typedef int keep_pedantic_happy;
#endif

44
nodemcuv2/lv_arduino/src/porting/lv_port_disp_template.h Normal file
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/**
* @file lv_port_disp_templ.h
*
*/
/*Copy this file as "lv_port_disp.h" and set this value to "1" to enable content*/
#if 0
#ifndef LV_PORT_DISP_TEMPL_H
#define LV_PORT_DISP_TEMPL_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lvgl/lvgl.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_PORT_DISP_TEMPL_H*/
#endif /*Disable/Enable content*/

379
nodemcuv2/lv_arduino/src/porting/lv_port_fs_template.c Normal file
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/**
* @file lv_port_fs_templ.c
*
*/
/*Copy this file as "lv_port_fs.c" and set this value to "1" to enable content*/
#if 0
/*********************
* INCLUDES
*********************/
#include "lv_port_fs_template.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/* Create a type to store the required data about your file.
* If you are using a File System library
* it already should have a File type.
* For example FatFS has `FIL`. In this case use `typedef FIL file_t`*/
typedef struct {
/*Add the data you need to store about a file*/
uint32_t dummy1;
uint32_t dummy2;
}file_t;
/*Similarly to `file_t` create a type for directory reading too */
typedef struct {
/*Add the data you need to store about directory reading*/
uint32_t dummy1;
uint32_t dummy2;
}dir_t;
/**********************
* STATIC PROTOTYPES
**********************/
static void fs_init(void);
static lv_fs_res_t fs_open (lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode);
static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p);
static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw);
static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos);
static lv_fs_res_t fs_size (lv_fs_drv_t * drv, void * file_p, uint32_t * size_p);
static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
static lv_fs_res_t fs_remove (lv_fs_drv_t * drv, const char *path);
static lv_fs_res_t fs_trunc (lv_fs_drv_t * drv, void * file_p);
static lv_fs_res_t fs_rename (lv_fs_drv_t * drv, const char * oldname, const char * newname);
static lv_fs_res_t fs_free (lv_fs_drv_t * drv, uint32_t * total_p, uint32_t * free_p);
static lv_fs_res_t fs_dir_open (lv_fs_drv_t * drv, void * rddir_p, const char *path);
static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * rddir_p, char *fn);
static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * rddir_p);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void lv_port_fs_init(void)
{
/*----------------------------------------------------
* Initialize your storage device and File System
* -------------------------------------------------*/
fs_init();
/*---------------------------------------------------
* Register the file system interface in LVGL
*--------------------------------------------------*/
/* Add a simple drive to open images */
lv_fs_drv_t fs_drv;
lv_fs_drv_init(&fs_drv);
/*Set up fields...*/
fs_drv.file_size = sizeof(file_t);
fs_drv.letter = 'P';
fs_drv.open_cb = fs_open;
fs_drv.close_cb = fs_close;
fs_drv.read_cb = fs_read;
fs_drv.write_cb = fs_write;
fs_drv.seek_cb = fs_seek;
fs_drv.tell_cb = fs_tell;
fs_drv.free_space_cb = fs_free;
fs_drv.size_cb = fs_size;
fs_drv.remove_cb = fs_remove;
fs_drv.rename_cb = fs_rename;
fs_drv.trunc_cb = fs_trunc;
fs_drv.rddir_size = sizeof(dir_t);
fs_drv.dir_close_cb = fs_dir_close;
fs_drv.dir_open_cb = fs_dir_open;
fs_drv.dir_read_cb = fs_dir_read;
lv_fs_drv_register(&fs_drv);
}
/**********************
* STATIC FUNCTIONS
**********************/
/* Initialize your Storage device and File system. */
static void fs_init(void)
{
/*E.g. for FatFS initalize the SD card and FatFS itself*/
/*You code here*/
}
/**
* Open a file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable
* @param path path to the file beginning with the driver letter (e.g. S:/folder/file.txt)
* @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_open (lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
if(mode == LV_FS_MODE_WR)
{
/*Open a file for write*/
/* Add your code here*/
}
else if(mode == LV_FS_MODE_RD)
{
/*Open a file for read*/
/* Add your code here*/
}
else if(mode == (LV_FS_MODE_WR | LV_FS_MODE_RD))
{
/*Open a file for read and write*/
/* Add your code here*/
}
return res;
}
/**
* Close an opened file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable. (opened with lv_ufs_open)
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
/* Add your code here*/
return res;
}
/**
* Read data from an opened file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable.
* @param buf pointer to a memory block where to store the read data
* @param btr number of Bytes To Read
* @param br the real number of read bytes (Byte Read)
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
/* Add your code here*/
return res;
}
/**
* Write into a file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable
* @param buf pointer to a buffer with the bytes to write
* @param btr Bytes To Write
* @param br the number of real written bytes (Bytes Written). NULL if unused.
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
/* Add your code here*/
return res;
}
/**
* Set the read write pointer. Also expand the file size if necessary.
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable. (opened with lv_ufs_open )
* @param pos the new position of read write pointer
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
/* Add your code here*/
return res;
}
/**
* Give the size of a file bytes
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable
* @param size pointer to a variable to store the size
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_size (lv_fs_drv_t * drv, void * file_p, uint32_t * size_p)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
/* Add your code here*/
return res;
}
/**
* Give the position of the read write pointer
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable.
* @param pos_p pointer to to store the result
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
/* Add your code here*/
return res;
}
/**
* Delete a file
* @param drv pointer to a driver where this function belongs
* @param path path of the file to delete
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_remove (lv_fs_drv_t * drv, const char *path)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
/* Add your code here*/
return res;
}
/**
* Truncate the file size to the current position of the read write pointer
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to an 'ufs_file_t' variable. (opened with lv_fs_open )
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_trunc (lv_fs_drv_t * drv, void * file_p)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
/* Add your code here*/
return res;
}
/**
* Rename a file
* @param drv pointer to a driver where this function belongs
* @param oldname path to the file
* @param newname path with the new name
* @return LV_FS_RES_OK or any error from 'fs_res_t'
*/
static lv_fs_res_t fs_rename (lv_fs_drv_t * drv, const char * oldname, const char * newname)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
/* Add your code here*/
return res;
}
/**
* Get the free and total size of a driver in kB
* @param drv pointer to a driver where this function belongs
* @param letter the driver letter
* @param total_p pointer to store the total size [kB]
* @param free_p pointer to store the free size [kB]
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_free (lv_fs_drv_t * drv, uint32_t * total_p, uint32_t * free_p)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
/* Add your code here*/
return res;
}
/**
* Initialize a 'fs_read_dir_t' variable for directory reading
* @param drv pointer to a driver where this function belongs
* @param rddir_p pointer to a 'fs_read_dir_t' variable
* @param path path to a directory
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_open (lv_fs_drv_t * drv, void * rddir_p, const char *path)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
/* Add your code here*/
return res;
}
/**
* Read the next filename form a directory.
* The name of the directories will begin with '/'
* @param drv pointer to a driver where this function belongs
* @param rddir_p pointer to an initialized 'fs_read_dir_t' variable
* @param fn pointer to a buffer to store the filename
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * rddir_p, char *fn)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
/* Add your code here*/
return res;
}
/**
* Close the directory reading
* @param drv pointer to a driver where this function belongs
* @param rddir_p pointer to an initialized 'fs_read_dir_t' variable
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * rddir_p)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
/* Add your code here*/
return res;
}
#else /* Enable this file at the top */
/* This dummy typedef exists purely to silence -Wpedantic. */
typedef int keep_pedantic_happy;
#endif

44
nodemcuv2/lv_arduino/src/porting/lv_port_fs_template.h Normal file
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/**
* @file lv_port_fs_templ.h
*
*/
/*Copy this file as "lv_port_fs.h" and set this value to "1" to enable content*/
#if 0
#ifndef LV_PORT_FS_TEMPL_H
#define LV_PORT_FS_TEMPL_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lvgl/lvgl.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_PORT_FS_TEMPL_H*/
#endif /*Disable/Enable content*/

428
nodemcuv2/lv_arduino/src/porting/lv_port_indev_template.c Normal file
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/**
* @file lv_port_indev_templ.c
*
*/
/*Copy this file as "lv_port_indev.c" and set this value to "1" to enable content*/
#if 0
/*********************
* INCLUDES
*********************/
#include "lv_port_indev_template.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void touchpad_init(void);
static bool touchpad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
static bool touchpad_is_pressed(void);
static void touchpad_get_xy(lv_coord_t * x, lv_coord_t * y);
static void mouse_init(void);
static bool mouse_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
static bool mouse_is_pressed(void);
static void mouse_get_xy(lv_coord_t * x, lv_coord_t * y);
static void keypad_init(void);
static bool keypad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
static uint32_t keypad_get_key(void);
static void encoder_init(void);
static bool encoder_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
static void encoder_handler(void);
static void button_init(void);
static bool button_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
static int8_t button_get_pressed_id(void);
static bool button_is_pressed(uint8_t id);
/**********************
* STATIC VARIABLES
**********************/
lv_indev_t * indev_touchpad;
lv_indev_t * indev_mouse;
lv_indev_t * indev_keypad;
lv_indev_t * indev_encoder;
lv_indev_t * indev_button;
static int32_t encoder_diff;
static lv_indev_state_t encoder_state;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void lv_port_indev_init(void)
{
/* Here you will find example implementation of input devices supported by LittelvGL:
* - Touchpad
* - Mouse (with cursor support)
* - Keypad (supports GUI usage only with key)
* - Encoder (supports GUI usage only with: left, right, push)
* - Button (external buttons to press points on the screen)
*
* The `..._read()` function are only examples.
* You should shape them according to your hardware
*/
lv_indev_drv_t indev_drv;
/*------------------
* Touchpad
* -----------------*/
/*Initialize your touchpad if you have*/
touchpad_init();
/*Register a touchpad input device*/
lv_indev_drv_init(&indev_drv);
indev_drv.type = LV_INDEV_TYPE_POINTER;
indev_drv.read_cb = touchpad_read;
indev_touchpad = lv_indev_drv_register(&indev_drv);
/*------------------
* Mouse
* -----------------*/
/*Initialize your touchpad if you have*/
mouse_init();
/*Register a mouse input device*/
lv_indev_drv_init(&indev_drv);
indev_drv.type = LV_INDEV_TYPE_POINTER;
indev_drv.read_cb = mouse_read;
indev_mouse = lv_indev_drv_register(&indev_drv);
/*Set cursor. For simplicity set a HOME symbol now.*/
lv_obj_t * mouse_cursor = lv_img_create(lv_disp_get_scr_act(NULL), NULL);
lv_img_set_src(mouse_cursor, LV_SYMBOL_HOME);
lv_indev_set_cursor(indev_mouse, mouse_cursor);
/*------------------
* Keypad
* -----------------*/
/*Initialize your keypad or keyboard if you have*/
keypad_init();
/*Register a keypad input device*/
lv_indev_drv_init(&indev_drv);
indev_drv.type = LV_INDEV_TYPE_KEYPAD;
indev_drv.read_cb = keypad_read;
indev_keypad = lv_indev_drv_register(&indev_drv);
/* Later you should create group(s) with `lv_group_t * group = lv_group_create()`,
* add objects to the group with `lv_group_add_obj(group, obj)`
* and assign this input device to group to navigate in it:
* `lv_indev_set_group(indev_keypad, group);` */
/*------------------
* Encoder
* -----------------*/
/*Initialize your encoder if you have*/
encoder_init();
/*Register a encoder input device*/
lv_indev_drv_init(&indev_drv);
indev_drv.type = LV_INDEV_TYPE_ENCODER;
indev_drv.read_cb = encoder_read;
indev_encoder = lv_indev_drv_register(&indev_drv);
/* Later you should create group(s) with `lv_group_t * group = lv_group_create()`,
* add objects to the group with `lv_group_add_obj(group, obj)`
* and assign this input device to group to navigate in it:
* `lv_indev_set_group(indev_encoder, group);` */
/*------------------
* Button
* -----------------*/
/*Initialize your button if you have*/
button_init();
/*Register a button input device*/
lv_indev_drv_init(&indev_drv);
indev_drv.type = LV_INDEV_TYPE_BUTTON;
indev_drv.read_cb = button_read;
indev_button = lv_indev_drv_register(&indev_drv);
/*Assign buttons to points on the screen*/
static const lv_point_t btn_points[2] = {
{10, 10}, /*Button 0 -> x:10; y:10*/
{40, 100}, /*Button 1 -> x:40; y:100*/
};
lv_indev_set_button_points(indev_button, btn_points);
}
/**********************
* STATIC FUNCTIONS
**********************/
/*------------------
* Touchpad
* -----------------*/
/*Initialize your touchpad*/
static void touchpad_init(void)
{
/*Your code comes here*/
}
/* Will be called by the library to read the touchpad */
static bool touchpad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
{
static lv_coord_t last_x = 0;
static lv_coord_t last_y = 0;
/*Save the pressed coordinates and the state*/
if(touchpad_is_pressed()) {
touchpad_get_xy(&last_x, &last_y);
data->state = LV_INDEV_STATE_PR;
} else {
data->state = LV_INDEV_STATE_REL;
}
/*Set the last pressed coordinates*/
data->point.x = last_x;
data->point.y = last_y;
/*Return `false` because we are not buffering and no more data to read*/
return false;
}
/*Return true is the touchpad is pressed*/
static bool touchpad_is_pressed(void)
{
/*Your code comes here*/
return false;
}
/*Get the x and y coordinates if the touchpad is pressed*/
static void touchpad_get_xy(lv_coord_t * x, lv_coord_t * y)
{
/*Your code comes here*/
(*x) = 0;
(*y) = 0;
}
/*------------------
* Mouse
* -----------------*/
/* Initialize your mouse */
static void mouse_init(void)
{
/*Your code comes here*/
}
/* Will be called by the library to read the mouse */
static bool mouse_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
{
/*Get the current x and y coordinates*/
mouse_get_xy(&data->point.x, &data->point.y);
/*Get whether the mouse button is pressed or released*/
if(mouse_is_pressed()) {
data->state = LV_INDEV_STATE_PR;
} else {
data->state = LV_INDEV_STATE_REL;
}
/*Return `false` because we are not buffering and no more data to read*/
return false;
}
/*Return true is the mouse button is pressed*/
static bool mouse_is_pressed(void)
{
/*Your code comes here*/
return false;
}
/*Get the x and y coordinates if the mouse is pressed*/
static void mouse_get_xy(lv_coord_t * x, lv_coord_t * y)
{
/*Your code comes here*/
(*x) = 0;
(*y) = 0;
}
/*------------------
* Keypad
* -----------------*/
/* Initialize your keypad */
static void keypad_init(void)
{
/*Your code comes here*/
}
/* Will be called by the library to read the mouse */
static bool keypad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
{
static uint32_t last_key = 0;
/*Get the current x and y coordinates*/
mouse_get_xy(&data->point.x, &data->point.y);
/*Get whether the a key is pressed and save the pressed key*/
uint32_t act_key = keypad_get_key();
if(act_key != 0) {
data->state = LV_INDEV_STATE_PR;
/*Translate the keys to LVGL control characters according to your key definitions*/
switch(act_key) {
case 1:
act_key = LV_KEY_NEXT;
break;
case 2:
act_key = LV_KEY_PREV;
break;
case 3:
act_key = LV_KEY_LEFT;
break;
case 4:
act_key = LV_KEY_RIGHT;
break;
case 5:
act_key = LV_KEY_ENTER;
break;
}
last_key = act_key;
} else {
data->state = LV_INDEV_STATE_REL;
}
data->key = last_key;
/*Return `false` because we are not buffering and no more data to read*/
return false;
}
/*Get the currently being pressed key. 0 if no key is pressed*/
static uint32_t keypad_get_key(void)
{
/*Your code comes here*/
return 0;
}
/*------------------
* Encoder
* -----------------*/
/* Initialize your keypad */
static void encoder_init(void)
{
/*Your code comes here*/
}
/* Will be called by the library to read the encoder */
static bool encoder_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
{
data->enc_diff = encoder_diff;
data->state = encoder_state;
/*Return `false` because we are not buffering and no more data to read*/
return false;
}
/*Call this function in an interrupt to process encoder events (turn, press)*/
static void encoder_handler(void)
{
/*Your code comes here*/
encoder_diff += 0;
encoder_state = LV_INDEV_STATE_REL;
}
/*------------------
* Button
* -----------------*/
/* Initialize your buttons */
static void button_init(void)
{
/*Your code comes here*/
}
/* Will be called by the library to read the button */
static bool button_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
{
static uint8_t last_btn = 0;
/*Get the pressed button's ID*/
int8_t btn_act = button_get_pressed_id();
if(btn_act >= 0) {
data->state = LV_INDEV_STATE_PR;
last_btn = btn_act;
} else {
data->state = LV_INDEV_STATE_REL;
}
/*Save the last pressed button's ID*/
data->btn_id = last_btn;
/*Return `false` because we are not buffering and no more data to read*/
return false;
}
/*Get ID (0, 1, 2 ..) of the pressed button*/
static int8_t button_get_pressed_id(void)
{
uint8_t i;
/*Check to buttons see which is being pressed (assume there are 2 buttons)*/
for(i = 0; i < 2; i++) {
/*Return the pressed button's ID*/
if(button_is_pressed(i)) {
return i;
}
}
/*No button pressed*/
return -1;
}
/*Test if `id` button is pressed or not*/
static bool button_is_pressed(uint8_t id)
{
/*Your code comes here*/
return false;
}
#else /* Enable this file at the top */
/* This dummy typedef exists purely to silence -Wpedantic. */
typedef int keep_pedantic_happy;
#endif

45
nodemcuv2/lv_arduino/src/porting/lv_port_indev_template.h Normal file
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/**
* @file lv_port_indev_templ.h
*
*/
/*Copy this file as "lv_port_indev.h" and set this value to "1" to enable content*/
#if 0
#ifndef LV_PORT_INDEV_TEMPL_H
#define LV_PORT_INDEV_TEMPL_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lvgl/lvgl.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_PORT_INDEV_TEMPL_H*/
#endif /*Disable/Enable content*/

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nodemcuv2/lv_arduino/src/scripts/built_in_font/built_in_font_gen.py Normal file
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#!/usr/bin/env python3.6
import argparse
from argparse import RawTextHelpFormatter
import os
import sys
parser = argparse.ArgumentParser(description="""Create fonts for LittelvGL including the built-in symbols. lv_font_conv needs to be installed. See https://github.com/littlevgl/lv_font_conv
Example: python built_in_font_gen.py --size 16 -o lv_font_roboto_16.c --bpp 4 -r 0x20-0x7F""", formatter_class=RawTextHelpFormatter)
parser.add_argument('-s', '--size',
type=int,
metavar = 'px',
nargs='?',
help='Size of the font in px')
parser.add_argument('--bpp',
type=int,
metavar = '1,2,4',
nargs='?',
help='Bit per pixel')
parser.add_argument('-r', '--range',
nargs='+',
metavar = 'start-end',
default=['0x20-0x7F,0xB0,0x2022'],
help='Ranges and/or characters to include. Default is 0x20-7F (ASCII). E.g. -r 0x20-0x7F, 0x200, 324')
parser.add_argument('--symbols',
nargs='+',
metavar = 'sym',
default=[''],
help=u'Symbols to include. E.g. -s ÁÉŐ'.encode('utf-8'))
parser.add_argument('--font',
metavar = 'file',
nargs='?',
default='Montserrat-Medium.ttf',
help='A TTF or WOFF file')
parser.add_argument('-o', '--output',
nargs='?',
metavar='file',
help='Output file name. E.g. my_font_20.c')
parser.add_argument('--compressed', action='store_true',
help='Compress the bitmaps')
parser.add_argument('--subpx', action='store_true',
help='3 times wider letters for sub pixel rendering')
args = parser.parse_args()
if args.compressed == False:
compr = "--no-compress --no-prefilter"
else:
compr = ""
if len(args.symbols[0]) != 0:
args.symbols[0] = "--symbols " + args.symbols[0]
#Built in symbols
syms = "61441,61448,61451,61452,61452,61453,61457,61459,61461,61465,61468,61473,61478,61479,61480,61502,61512,61515,61516,61517,61521,61522,61523,61524,61543,61544,61550,61552,61553,61556,61559,61560,61561,61563,61587,61589,61636,61637,61639,61671,61674,61683,61724,61732,61787,61931,62016,62017,62018,62019,62020,62087,62099,62212,62189,62810,63426,63650"
#Run the command (Add degree and bbullet symbol)
cmd = "lv_font_conv {} --bpp {} --size {} --font {} -r {} {} --font FontAwesome5-Solid+Brands+Regular.woff -r {} --format lvgl -o {} --force-fast-kern-format".format(compr, args.bpp, args.size, args.font, args.range[0], args.symbols[0], syms, args.output)
os.system(cmd)

103
nodemcuv2/lv_arduino/src/scripts/built_in_font/generate_all.py Normal file
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#!/usr/bin/env python3.6
import os
print("\nGenerating 16 px CJK")
os.system(u"./built_in_font_gen.py --size 16 -o lv_font_simsun_16_cjk.c --bpp 4 --font SimSun.woff -r 0x20-0x7f --symbols 一在有個我不這了他也就人都說而我們你了要會對及和與以很種的大能著她那上但年還可以最自己為來所他們兩各可為或好等又將因為於由從更被才已者每次把三什麼問題其讓此做再所以只與則台灣卻並位想去呢學生表示到公司將如果社會看小天因此新但是它中使工作全覺得使用這些裡並由於時候知道這樣一認為時間事過向可能中國美國到和幾系統政府大家國家許多生活跟已經大學研究因本二活動該世界應四希望方式內項啊下環境一些必須文化高孩子沒有不能如開始元不同仍網路日本用中心來對雖然重要地方進行關係市場太老師提供學校應該指出經濟其他家發展教育成為多非常便方面很多吃然後未發現電腦一樣而且心不過無法企業正服務較不會臺灣曾嗎空間看到五如何國內們無對於以及之後可是當人員比先產品資訊資料比較先生地除了大陸需要像在給歲請月些名另若亦地區技術至特別其實國際不要發生參加一定其中問台北包括講造成看像常即喜歡去沒出現政治話走單位一直吧是否當然整處理歷史了解那怎麼機會家聽所有只要朋友令甚至用真六呀情況還是錢方法點任何經驗藝術你們十主要媽媽增加提出為什麼以您計畫作利用東西在條設計找之間成長能夠決定學習誰見半時代完成帶相當同學件能力別人生命下來場會議容易開發民眾事情書事實有關自組織言多愛建立相關均產生多業者解決完全的話接受知約一般推動過程管理功能手打水要求小朋友教授難我國告訴內容結果調查家庭成立選擇經營然而父母寫人類至於買尤其配合進入例如得討論依作品情形資源原因啦妳運動觀念給軟體品質經過如此嗯精神影響之過好像成參與以後於是部分另外公園透過訓練努力研究具有共同所謂下行為合作經合作目標起來考慮長意見辦法音樂連受廠商隻受到一切或是中央某女性教學極獲得真的路來快國小部份工程女人舉行句只是段根據現象人民土地面對注意這裡新聞繼續相信政策變成計劃強調學人士前前存在制度意義代表課程該沒至需求人生那些成功爸爸產業負責民間雖影響直接幾乎分實際團體價值使得類形成科技這麼當七不但往本身標準似乎應用或者動物電話態度建設事業老那麼常常字坐舉辦自我有的具目的塊條件即使好十分多少放又電影科學執行邊委員會溝通開一起張針對員工引起自然那麼安全總統此外擁有並且事件設計研究所語言嚴重故事學術片設備之外車基本實在久套達到改善死結構住皆改變拿小組支持座醫院既僅值得學者八交通階段就是申請主管申請同感覺電視母親嘛香港記者壓力快樂喝敢院也許人們談生產怕就身體規定程度積極知識作為機構而是鼓勵角色狀況專家據清楚不僅比賽玩效果越保護共開放附近上父親專業經費曾經工作願意分別重視不少歡迎小孩小時中國人顯示中共出男人避免屬於實施聲音主義行動不可只有校園興趣山表現得回來主任裡面經常不再電子受思想頭終於謝謝協助除當地正式真正低性份因素推出上價格去認識方向責任說明工業大量做逐漸心理一點供須簡單運用觀察往往規劃減少重新業務報導仍然感到開放領域有效女要從事發揮人才反而行政銀行公共媒體提高代自然社區力量啊教育部愈超過維持家長結合校長通常缺乏委員特色結果有時教師之前遠控制本否則法少原則要臉通過建議工具作業達節目智慧來自而變化同樣形式站以為健康擔任人口規劃剛特殊原來道分傳統總是前往投資加強不斷對象追求加上比思考製作台北市取得出來加入台安排兒童國中範圍老人雙方牠北京年輕結束教程式婦女找到彼此全球成本回到部而已之下等變期間非小姐整體採用根本叫歐洲正在加以充滿系列隨著早等等頗不足總分析深報告不錯在於旁笑故消費者意識公尺民族為主大眾到底願度大概對方官員發表進一步自由正確豐富國民黨戰爭怎麼樣只好明顯改革表達肯定強高興哪樹適合茶別國外關心蘇聯成績人物聽到創造不必不論尚居民不管美麗伊拉克帶來有般永遠感情兒子這樣子起全部".encode('utf-8'))
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_simsun_16_cjk.c')
exit()
print("Generating 12 px")
os.system("./built_in_font_gen.py --size 12 -o lv_font_montserrat_12.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_12.c')
print("\nGenerating 14 px")
os.system("./built_in_font_gen.py --size 14 -o lv_font_montserrat_14.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_14.c')
print("\nGenerating 16 px")
os.system("./built_in_font_gen.py --size 16 -o lv_font_montserrat_16.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_16.c')
print("\nGenerating 18 px")
os.system("./built_in_font_gen.py --size 18 -o lv_font_montserrat_18.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_18.c')
print("\nGenerating 20 px")
os.system("./built_in_font_gen.py --size 20 -o lv_font_montserrat_20.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_20.c')
print("\nGenerating 22 px")
os.system("./built_in_font_gen.py --size 22 -o lv_font_montserrat_22.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_22.c')
print("\nGenerating 24 px")
os.system("./built_in_font_gen.py --size 24 -o lv_font_montserrat_24.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_24.c')
print("\nGenerating 26 px")
os.system("./built_in_font_gen.py --size 26 -o lv_font_montserrat_26.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_26.c')
print("\nGenerating 28 px")
os.system("./built_in_font_gen.py --size 28 -o lv_font_montserrat_28.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_28.c')
print("\nGenerating 30 px")
os.system("./built_in_font_gen.py --size 30 -o lv_font_montserrat_30.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_30.c')
print("\nGenerating 32 px")
os.system("./built_in_font_gen.py --size 32 -o lv_font_montserrat_32.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_32.c')
print("\nGenerating 34 px")
os.system("./built_in_font_gen.py --size 34 -o lv_font_montserrat_34.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_34.c')
print("\nGenerating 36 px")
os.system("./built_in_font_gen.py --size 36 -o lv_font_montserrat_36.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_36.c')
print("\nGenerating 38 px")
os.system("./built_in_font_gen.py --size 38 -o lv_font_montserrat_38.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_38.c')
print("\nGenerating 40 px")
os.system("./built_in_font_gen.py --size 40 -o lv_font_montserrat_40.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_40.c')
print("\nGenerating 42 px")
os.system("./built_in_font_gen.py --size 42 -o lv_font_montserrat_42.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_42.c')
print("\nGenerating 44 px")
os.system("./built_in_font_gen.py --size 44 -o lv_font_montserrat_44.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_44.c')
print("\nGenerating 46 px")
os.system("./built_in_font_gen.py --size 46 -o lv_font_montserrat_46.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_46.c')
print("\nGenerating 48 px")
os.system("./built_in_font_gen.py --size 48 -o lv_font_montserrat_48.c --bpp 4")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_48.c')
print("\nGenerating 12 px subpx")
os.system("./built_in_font_gen.py --size 12 -o lv_font_montserrat_12_subpx.c --bpp 4 --subpx")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_12_subpx.c')
print("\nGenerating 28 px compressed")
os.system("./built_in_font_gen.py --size 28 -o lv_font_montserrat_28_compressed.c --bpp 4 --compressed")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_montserrat_28_compressed.c')
print("\nGenerating 16 px CJK")
os.system(u"./built_in_font_gen.py --size 16 -o lv_font_simsun_16_cjk.c --bpp 4 --font SimSun.woff -r 0x20-0x7f --symbols 一在有個我不這了他也就人都說而我們你了要會對及和與以很種的大能著她那上但年還可以最自己為來所他們兩各可為或好等又將因為於由從更被才已者每次把三什麼問題其讓此做再所以只與則台灣卻並位想去呢學生表示到公司將如果社會看小天因此新但是它中使工作全覺得使用這些裡並由於時候知道這樣一認為時間事過向可能中國美國到和幾系統政府大家國家許多生活跟已經大學研究因本二活動該世界應四希望方式內項啊下環境一些必須文化高孩子沒有不能如開始元不同仍網路日本用中心來對雖然重要地方進行關係市場太老師提供學校應該指出經濟其他家發展教育成為多非常便方面很多吃然後未發現電腦一樣而且心不過無法企業正服務較不會臺灣曾嗎空間看到五如何國內們無對於以及之後可是當人員比先產品資訊資料比較先生地除了大陸需要像在給歲請月些名另若亦地區技術至特別其實國際不要發生參加一定其中問台北包括講造成看像常即喜歡去沒出現政治話走單位一直吧是否當然整處理歷史了解那怎麼機會家聽所有只要朋友令甚至用真六呀情況還是錢方法點任何經驗藝術你們十主要媽媽增加提出為什麼以您計畫作利用東西在條設計找之間成長能夠決定學習誰見半時代完成帶相當同學件能力別人生命下來場會議容易開發民眾事情書事實有關自組織言多愛建立相關均產生多業者解決完全的話接受知約一般推動過程管理功能手打水要求小朋友教授難我國告訴內容結果調查家庭成立選擇經營然而父母寫人類至於買尤其配合進入例如得討論依作品情形資源原因啦妳運動觀念給軟體品質經過如此嗯精神影響之過好像成參與以後於是部分另外公園透過訓練努力研究具有共同所謂下行為合作經合作目標起來考慮長意見辦法音樂連受廠商隻受到一切或是中央某女性教學極獲得真的路來快國小部份工程女人舉行句只是段根據現象人民土地面對注意這裡新聞繼續相信政策變成計劃強調學人士前前存在制度意義代表課程該沒至需求人生那些成功爸爸產業負責民間雖影響直接幾乎分實際團體價值使得類形成科技這麼當七不但往本身標準似乎應用或者動物電話態度建設事業老那麼常常字坐舉辦自我有的具目的塊條件即使好十分多少放又電影科學執行邊委員會溝通開一起張針對員工引起自然那麼安全總統此外擁有並且事件設計研究所語言嚴重故事學術片設備之外車基本實在久套達到改善死結構住皆改變拿小組支持座醫院既僅值得學者八交通階段就是申請主管申請同感覺電視母親嘛香港記者壓力快樂喝敢院也許人們談生產怕就身體規定程度積極知識作為機構而是鼓勵角色狀況專家據清楚不僅比賽玩效果越保護共開放附近上父親專業經費曾經工作願意分別重視不少歡迎小孩小時中國人顯示中共出男人避免屬於實施聲音主義行動不可只有校園興趣山表現得回來主任裡面經常不再電子受思想頭終於謝謝協助除當地正式真正低性份因素推出上價格去認識方向責任說明工業大量做逐漸心理一點供須簡單運用觀察往往規劃減少重新業務報導仍然感到開放領域有效女要從事發揮人才反而行政銀行公共媒體提高代自然社區力量啊教育部愈超過維持家長結合校長通常缺乏委員特色結果有時教師之前遠控制本否則法少原則要臉通過建議工具作業達節目智慧來自而變化同樣形式站以為健康擔任人口規劃剛特殊原來道分傳統總是前往投資加強不斷對象追求加上比思考製作台北市取得出來加入台安排兒童國中範圍老人雙方牠北京年輕結束教程式婦女找到彼此全球成本回到部而已之下等變期間非小姐整體採用根本叫歐洲正在加以充滿系列隨著早等等頗不足總分析深報告不錯在於旁笑故消費者意識公尺民族為主大眾到底願度大概對方官員發表進一步自由正確豐富國民黨戰爭怎麼樣只好明顯改革表達肯定強高興哪樹適合茶別國外關心蘇聯成績人物聽到創造不必不論尚居民不管美麗伊拉克帶來有般永遠感情兒子這樣子起全部".encode('utf-8'))
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_simsun_16_cjk.c')
print("Generating 16 px Hebrew, Persian")
os.system("./built_in_font_gen.py --size 16 -o lv_font_dejavu_16_persian_hebrew.c --bpp 4 --font DejaVuSans.ttf -r 0x20-0x7f,0x5d0-0x5ea,0x600-0x6FF,0xFB50-0xFDFF,0xFE70-0xFEFF")
os.system('sed -i \'s|#include "lvgl/lvgl.h"|#include "../../lvgl.h"|\' lv_font_dejavu_16_persian_hebrew.c')

50
nodemcuv2/lv_arduino/src/scripts/code-format.cfg Normal file
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--style=kr
--indent=spaces=4
--indent-classes
--indent-switches
--indent-cases
--indent-preproc-block
--indent-preproc-define
--indent-col1-comments
--pad-oper
--unpad-paren
--align-pointer=middle
--align-reference=middle
--convert-tabs
--max-code-length=120
--break-after-logical
--break-closing-braces
--attach-closing-while
--min-conditional-indent=0
--max-continuation-indent=120
--mode=c
--lineend=linux
--recursive
--suffix=none
--preserve-date
--formatted
--exclude=lv_conf_internal.h
--exclude=../src/lv_font/lv_font_montserrat_12.c
--exclude=../src/lv_font/lv_font_montserrat_14.c
--exclude=../src/lv_font/lv_font_montserrat_16.c
--exclude=../src/lv_font/lv_font_montserrat_18.c
--exclude=../src/lv_font/lv_font_montserrat_20.c
--exclude=../src/lv_font/lv_font_montserrat_22.c
--exclude=../src/lv_font/lv_font_montserrat_24.c
--exclude=../src/lv_font/lv_font_montserrat_26.c
--exclude=../src/lv_font/lv_font_montserrat_28.c
--exclude=../src/lv_font/lv_font_montserrat_30.c
--exclude=../src/lv_font/lv_font_montserrat_32.c
--exclude=../src/lv_font/lv_font_montserrat_34.c
--exclude=../src/lv_font/lv_font_montserrat_36.c
--exclude=../src/lv_font/lv_font_montserrat_38.c
--exclude=../src/lv_font/lv_font_montserrat_40.c
--exclude=../src/lv_font/lv_font_montserrat_42.c
--exclude=../src/lv_font/lv_font_montserrat_44.c
--exclude=../src/lv_font/lv_font_montserrat_46.c
--exclude=../src/lv_font/lv_font_montserrat_48.c
--exclude=../src/lv_font/lv_font_montserrat_12_subpx.c
--exclude=../src/lv_font/lv_font_montserrat_28_compressed.c
--exclude=../src/lv_font/lv_font_simsun_16_cjk.c
--exclude=../src/lv_font/lv_font_dejavu_16_persian_hebrew.c

1
nodemcuv2/lv_arduino/src/scripts/code-format.sh Normal file
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astyle --options=code-format.cfg "../src/*.c,*.h"

2
nodemcuv2/lv_arduino/src/scripts/cppcheck_run.sh Normal file
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cppcheck -j8 --template="{severity}\t{file}:{line}\t{id}: {message}" --enable=all ../src/ --output-file=cppcheck_res.txt --suppress=unusedFunction --suppress=preprocessorErrorDirective --force

10
nodemcuv2/lv_arduino/src/scripts/infer_run.sh Normal file
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# https://github.com/facebook/infer
#
# Install:
# VERSION=0.17.0; \
# curl -sSL "https://github.com/facebook/infer/releases/download/v$VERSION/infer-linux64-v$VERSION.tar.xz" \
# | sudo tar -C /opt -xJ && \
# sudoln -s "/opt/infer-linux64-v$VERSION/bin/infer" /usr/local/bin/infer
infer run -- make -j8

76
nodemcuv2/lv_arduino/src/scripts/lv_conf_checker.py Normal file
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#!/usr/bin/env python3.6
'''
Generates a checker file for lv_conf.h from lv_conf_templ.h define all the not defined values
'''
import re
fin = open("../lv_conf_template.h", "r")
fout = open("../src/lv_conf_internal.h", "w")
fout.write(
'''/**
* GENERATED FILE, DO NOT EDIT IT!
* @file lv_conf_internal.h
* Make sure all the defines of lv_conf.h have a default value
**/
#ifndef LV_CONF_INTERNAL_H
#define LV_CONF_INTERNAL_H
/* clang-format off */
#include <stdint.h>
#if defined(LV_CONF_PATH)
#define __LV_TO_STR_AUX(x) #x
#define __LV_TO_STR(x) __LV_TO_STR_AUX(x)
#include __LV_TO_STR(LV_CONF_PATH)
#undef __LV_TO_STR_AUX
#undef __LV_TO_STR
#elif defined(LV_CONF_INCLUDE_SIMPLE)
#include "lv_conf.h"
#else
#include "../../lv_conf.h"
#endif
'''
)
started = 0
for i in fin.read().splitlines():
if not started:
if '#define LV_CONF_H' in i:
started = 1
continue
else:
continue
if '/*--END OF LV_CONF_H--*/' in i: break
r = re.search(r'^ *# *define ([^\s]+).*$', i)
if r:
line = re.sub('\(.*?\)', '', r[1], 1) #remove parentheses from macros
fout.write(
f'#ifndef {line}\n'
f'{i}\n'
'#endif\n'
)
elif re.search('^ *typedef .*;.*$', i):
continue #ignore typedefs to avoide redeclaration
else:
fout.write(f'{i}\n')
fout.write(
'''
#endif /*LV_CONF_CHECKER_H*/
'''
)
fin.close()
fout.close()

263
nodemcuv2/lv_arduino/src/scripts/release.py Normal file
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import re
import os
lastNum = re.compile(r'(?:[^\d]*(\d+)[^\d]*)+')
def title(t):
print("\n---------------------------------")
print(t)
print("---------------------------------")
def cmd(c):
print("\n" + c)
os.system(c)
def increment(s):
""" look for the last sequence of number(s) in a string and increment """
m = lastNum.search(s)
if m:
next = str(int(m.group(1))+1)
start, end = m.span(1)
s = s[:max(end-len(next), start)] + next + s[end:]
return s, str(next)
def lvgl_clone():
title("lvgl: Clone")
cmd("git clone https://github.com/lvgl/lvgl.git")
os.chdir("./lvgl")
cmd("git co master")
def lvgl_format():
title("lvgl: Run code formatter")
os.chdir("./scripts")
cmd("./code-formatter.sh")
cmd("git ci -am 'Run code formatter'")
os.chdir("..")
def lvgl_update_version():
title("lvgl: Update version number")
f = open("./lvgl.h", "r")
outbuf = ""
major_ver = -1
minor_ver = -1
patch_ver = -1
for i in f.read().splitlines():
r = re.search(r'^#define LVGL_VERSION_MAJOR ', i)
if r:
m = lastNum.search(i)
if m: major_ver = m.group(1)
r = re.search(r'^#define LVGL_VERSION_MINOR ', i)
if r:
m = lastNum.search(i)
if m: minor_ver = m.group(1)
r = re.search(r'^#define LVGL_VERSION_PATCH ', i)
if r:
m = lastNum.search(i)
if m: patch_ver = m.group(1)
r = re.search(r'^#define LVGL_VERSION_INFO ', i)
if r:
i = "#define LVGL_VERSION_INFO \"\""
outbuf += i + '\n'
f.close()
f = open("./lvgl.h", "w")
f.write(outbuf)
f.close()
s = "v" + str(major_ver) + "." + str(minor_ver) + "." + str(patch_ver)
print("New version:" + s)
return s
def lvgl_update_library_json(v):
title("lvgl: Update version number in library.json")
f = open("./library.json", "r")
outbuf = ""
for i in f.read().splitlines():
r = re.search(r'"version": ', i)
if r:
i = ' "version": "' + v + '",'
outbuf += i + '\n'
f.close()
f = open("./library.json", "w")
f.write(outbuf)
f.close()
def lvgl_update_lv_conf_templ(ver_str):
title("lvgl: Update version number in lv_conf_template.h")
cmd("sed -i -r 's/v[0-9]+\.[0-9]+\.[0-9]+/"+ ver_str +"/' lv_conf_template.h ")
def lvgl_commit_push(v):
title("lvgl: commit and push release")
cmd('git ci -am "Release ' + v + '"')
cmd('git tag -a ' + v + ' -m "Release ' + v +'"')
cmd('git push origin master')
cmd('git push origin ' + v)
def lvgl_merge_to_release_branch(v):
title("lvgl: merge to release branch")
cmd('git co release/v7')
cmd('git merge master')
cmd('git push origin release/v7')
def lvgl_update_api_docs():
title("lvgl: Update API with Doxygen")
cmd("cd scripts; doxygen");
os.chdir("../")
def examples_clone():
title("examples: Clone")
cmd("git clone https://github.com/lvgl/lv_examples.git")
os.chdir("./lv_examples")
cmd("git co master")
def examples_commit_push(v):
title("examples: commit and push release")
cmd('git ci -am "Release ' + v + '"')
cmd('git tag -a ' + v + ' -m "Release ' + v +'"')
cmd('git push origin master')
cmd('git push origin ' + v)
def examples_merge_to_release_branch(v):
title("examples: merge to release branch")
cmd('git co release/v7')
cmd('git merge master')
cmd('git push origin release/v7')
os.chdir("../")
def drivers_clone():
title("drivers: Clone")
cmd("git clone https://github.com/lvgl/lv_drivers.git")
os.chdir("./lv_drivers")
cmd("git co master")
def drivers_commit_push(v):
title("drivers: commit and push release")
cmd('git ci -am "Release ' + v + '"')
cmd('git tag -a ' + v + ' -m "Release ' + v +'"')
cmd('git push origin master')
cmd('git push origin ' + v)
def drivers_merge_to_release_branch(v):
title("drivers: merge to release branch")
cmd('git co release/v7')
cmd('git merge master')
cmd('git push origin release/v7')
os.chdir("../")
def docs_clone():
title("docs: Clone")
cmd("git clone --recursive https://github.com/lvgl/docs.git")
os.chdir("./docs/v7")
cmd("git co master")
def docs_get_api():
title("docs: Get API files")
cmd("rm -rf xml");
cmd("cp -r ../../lvgl/docs/api_doc/xml .");
def docs_update_version(v):
title("docs: Update version number")
f = open("./conf.py", "r")
outbuf = ""
for i in f.read().splitlines():
r = re.search(r'^version = ', i)
if r:
i = "version = '" + v + "'"
r = re.search(r'^release = ', i)
if r:
i = "version = '" + v + "'"
outbuf += i + '\n'
f.close()
f = open("./conf.py", "w")
f.write(outbuf)
f.close()
def docs_update_trans():
title("docs: Update translations")
cmd("cd en && ./trans_push.py && ./trans_pull.py")
def docs_build():
title("docs: Build")
cmd("./build.py clean")
def docs_commit_push(v):
title("docs: Commit release")
cmd('git add .')
cmd('git ci -am "Release ' + v + '"')
cmd('git tag -a ' + v + ' -m "Release ' + v +'"')
cmd('git push origin master')
cmd('git push origin ' + v)
def clean_up():
title("Clean up repos")
os.chdir("../..")
cmd("rm -rf lvgl docs lv_examples lv_drivers")
lvgl_clone()
lvgl_format()
lvgl_update_api_docs()
ver_str = lvgl_update_version()
lvgl_update_library_json(ver_str)
lvgl_update_lv_conf_templ(ver_str)
lvgl_commit_push(ver_str)
lvgl_merge_to_release_branch(ver_str)
examples_clone()
examples_commit_push(ver_str)
examples_merge_to_release_branch(ver_str)
drivers_clone()
drivers_commit_push(ver_str)
drivers_merge_to_release_branch(ver_str)
docs_clone()
docs_get_api()
docs_update_version(ver_str)
#docs_update_trans() # Zanata is not working now
docs_build()
docs_commit_push(ver_str)
clean_up()

189
nodemcuv2/lv_arduino/src/src/lv_api_map.h Normal file
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/**
* @file lv_api_map.h
*
*/
#ifndef LV_API_MAP_H
#define LV_API_MAP_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lvgl.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/*---------------------
* V6.0 COMPATIBILITY
*--------------------*/
#if LV_USE_API_EXTENSION_V6
static inline void lv_task_once(lv_task_t * task)
{
lv_task_set_repeat_count(task, 1);
}
#if LV_USE_CHECKBOX
#define lv_checkbox_set_static_text lv_checkbox_set_text_static
#endif
#if LV_USE_CHART
#define lv_chart_get_point_cnt lv_chart_get_point_count
#endif
#if LV_USE_DROPDOWN
static inline void lv_dropdown_set_draw_arrow(lv_obj_t * ddlist, bool en)
{
if(en) lv_dropdown_set_symbol(ddlist, LV_SYMBOL_DOWN);
else lv_dropdown_set_symbol(ddlist, NULL);
}
static inline bool lv_dropdown_get_draw_arrow(lv_obj_t * ddlist)
{
if(lv_dropdown_get_symbol(ddlist)) return true;
else return false;
}
#define lv_dropdown_set_static_options lv_dropdown_set_options_static
#endif
#if LV_USE_BAR
/**
* Make the bar symmetric to zero. The indicator will grow from zero instead of the minimum
* position.
* @param bar pointer to a bar object
* @param en true: enable disable symmetric behavior; false: disable
* @deprecated As of v7.0, you should use `lv_bar_set_type` instead.
*/
static inline void lv_bar_set_sym(lv_obj_t * bar, bool en)
{
if(en)
lv_bar_set_type(bar, LV_BAR_TYPE_SYMMETRICAL);
else
lv_bar_set_type(bar, LV_BAR_TYPE_NORMAL);
}
/**
* Get whether the bar is symmetric or not.
* @param bar pointer to a bar object
* @return true: symmetric is enabled; false: disable
* @deprecated As of v7.0, you should use `lv_bar_get_type` instead.
*/
static inline bool lv_bar_get_sym(lv_obj_t * bar)
{
return lv_bar_get_type(bar) == LV_BAR_TYPE_SYMMETRICAL;
}
#endif
#if LV_USE_LABEL
#define lv_label_set_static_text lv_label_set_text_static
#endif
#if LV_USE_SLIDER
/**
* Make the slider symmetric to zero. The indicator will grow from zero instead of the minimum
* position.
* @param slider pointer to a bar object
* @param en true: enable disable symmetric behavior; false: disable
* @deprecated As of v7.0, you should use `lv_slider_set_type` instead.
*/
static inline void lv_slider_set_sym(lv_obj_t * slider, bool en)
{
lv_bar_set_sym(slider, en);
}
/**
* Get whether the slider is symmetric or not.
* @param slider pointer to a slider object
* @return true: symmetric is enabled; false: disable
* @deprecated As of v7.0, you should use `lv_slider_get_type` instead.
*/
static inline bool lv_slider_get_sym(lv_obj_t * slider)
{
return lv_bar_get_sym(slider);
}
#endif
#if LV_USE_ROLLER
/**
* Set a fixed width for the roller.
* @param roller pointer to a roller object
* @param w width
* @deprecated As of v7.0, you should use `lv_roller_set_auto_fit` and set the width normally instead.
*/
static inline void lv_roller_set_fix_width(lv_obj_t * roller, lv_coord_t w)
{
lv_roller_set_auto_fit(roller, false);
lv_obj_set_width(roller, w);
}
#endif
#if LV_USE_PAGE
#define lv_scrlbar_mode_t lv_scrollbar_mode_t
#define LV_SCRLBAR_MODE_OFF LV_SCROLLBAR_MODE_OFF
#define LV_SCRLBAR_MODE_ON LV_SCRILLBAR_MODE_ON
#define LV_SCRLBAR_MODE_DRAG LV_SCROLLBAR_MODE_DRAG
#define LV_SCRLBAR_MODE_AUTO LV_SCROLLBAR_MODE_AUTO
#define LV_SCRLBAR_MODE_HIDE LV_SCROLLBAR_MODE_HIDE
#define LV_SCRLBAR_MODE_UNHIDE LV_SCROLLBAR_MODE_UNHIDE
static inline void lv_page_set_scrlbar_mode(lv_obj_t * page, lv_scrlbar_mode_t sb_mode)
{
lv_page_set_scrollbar_mode(page, sb_mode);
}
static inline lv_scrollbar_mode_t lv_page_get_scrlbar_mode(lv_obj_t * page)
{
return lv_page_get_scrollbar_mode(page);
}
static inline lv_obj_t * lv_page_get_scrl(lv_obj_t * page)
{
return lv_page_get_scrollable(page);
}
#endif
#endif /*LV_USE_API_EXTENSION_V6*/
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_API_MAP_H*/

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11
nodemcuv2/lv_arduino/src/src/lv_core/lv_core.mk Normal file
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CSRCS += lv_group.c
CSRCS += lv_indev.c
CSRCS += lv_disp.c
CSRCS += lv_obj.c
CSRCS += lv_refr.c
CSRCS += lv_style.c
DEPPATH += --dep-path $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_core
VPATH += :$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_core
CFLAGS += "-I$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_core"

180
nodemcuv2/lv_arduino/src/src/lv_core/lv_disp.c Normal file
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/**
* @file lv_disp.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_disp.h"
#include "../lv_misc/lv_math.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Return with a pointer to the active screen
* @param disp pointer to display which active screen should be get. (NULL to use the default
* screen)
* @return pointer to the active screen object (loaded by 'lv_scr_load()')
*/
lv_obj_t * lv_disp_get_scr_act(lv_disp_t * disp)
{
if(!disp) disp = lv_disp_get_default();
if(!disp) {
LV_LOG_WARN("lv_scr_act: no display registered to get its act. screen");
return NULL;
}
return disp->act_scr;
}
/**
* Make a screen active
* @param scr pointer to a screen
*/
void lv_disp_load_scr(lv_obj_t * scr)
{
lv_disp_t * d = lv_obj_get_disp(scr);
if(!d) return; /*Shouldn't happen, just to be sure*/
d->act_scr = scr;
lv_obj_invalidate(scr);
}
/**
* Return with the top layer. (Same on every screen and it is above the normal screen layer)
* @param disp pointer to display which top layer should be get. (NULL to use the default screen)
* @return pointer to the top layer object (transparent screen sized lv_obj)
*/
lv_obj_t * lv_disp_get_layer_top(lv_disp_t * disp)
{
if(!disp) disp = lv_disp_get_default();
if(!disp) {
LV_LOG_WARN("lv_layer_top: no display registered to get its top layer");
return NULL;
}
return disp->top_layer;
}
/**
* Return with the sys. layer. (Same on every screen and it is above the normal screen and the top
* layer)
* @param disp pointer to display which sys. layer should be get. (NULL to use the default screen)
* @return pointer to the sys layer object (transparent screen sized lv_obj)
*/
lv_obj_t * lv_disp_get_layer_sys(lv_disp_t * disp)
{
if(!disp) disp = lv_disp_get_default();
if(!disp) {
LV_LOG_WARN("lv_layer_sys: no display registered to get its sys. layer");
return NULL;
}
return disp->sys_layer;
}
/**
* Assign a screen to a display.
* @param disp pointer to a display where to assign the screen
* @param scr pointer to a screen object to assign
*/
void lv_disp_assign_screen(lv_disp_t * disp, lv_obj_t * scr)
{
if(lv_obj_get_parent(scr) != NULL) {
LV_LOG_WARN("lv_disp_assign_screen: try to assign a non-screen object");
return;
}
lv_disp_t * old_disp = lv_obj_get_disp(scr);
if(old_disp == disp) return;
_lv_ll_chg_list(&old_disp->scr_ll, &disp->scr_ll, scr, true);
}
/**
* Get elapsed time since last user activity on a display (e.g. click)
* @param disp pointer to an display (NULL to get the overall smallest inactivity)
* @return elapsed ticks (milliseconds) since the last activity
*/
uint32_t lv_disp_get_inactive_time(const lv_disp_t * disp)
{
if(!disp) disp = lv_disp_get_default();
if(!disp) {
LV_LOG_WARN("lv_disp_get_inactive_time: no display registered");
return 0;
}
if(disp) return lv_tick_elaps(disp->last_activity_time);
lv_disp_t * d;
uint32_t t = UINT32_MAX;
d = lv_disp_get_next(NULL);
while(d) {
uint32_t elaps = lv_tick_elaps(d->last_activity_time);
t = LV_MATH_MIN(t, elaps);
d = lv_disp_get_next(d);
}
return t;
}
/**
* Manually trigger an activity on a display
* @param disp pointer to an display (NULL to use the default display)
*/
void lv_disp_trig_activity(lv_disp_t * disp)
{
if(!disp) disp = lv_disp_get_default();
if(!disp) {
LV_LOG_WARN("lv_disp_trig_activity: no display registered");
return;
}
disp->last_activity_time = lv_tick_get();
}
/**
* Get a pointer to the screen refresher task to
* modify its parameters with `lv_task_...` functions.
* @param disp pointer to a display
* @return pointer to the display refresher task. (NULL on error)
*/
lv_task_t * _lv_disp_get_refr_task(lv_disp_t * disp)
{
if(!disp) disp = lv_disp_get_default();
if(!disp) {
LV_LOG_WARN("lv_disp_get_refr_task: no display registered");
return NULL;
}
return disp->refr_task;
}
/**********************
* STATIC FUNCTIONS
**********************/

161
nodemcuv2/lv_arduino/src/src/lv_core/lv_disp.h Normal file
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/**
* @file lv_disp.h
*
*/
#ifndef LV_DISP_H
#define LV_DISP_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_hal/lv_hal.h"
#include "lv_obj.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Return with a pointer to the active screen
* @param disp pointer to display which active screen should be get. (NULL to use the default
* screen)
* @return pointer to the active screen object (loaded by 'lv_scr_load()')
*/
lv_obj_t * lv_disp_get_scr_act(lv_disp_t * disp);
/**
* Make a screen active
* @param scr pointer to a screen
*/
void lv_disp_load_scr(lv_obj_t * scr);
/**
* Return with the top layer. (Same on every screen and it is above the normal screen layer)
* @param disp pointer to display which top layer should be get. (NULL to use the default screen)
* @return pointer to the top layer object (transparent screen sized lv_obj)
*/
lv_obj_t * lv_disp_get_layer_top(lv_disp_t * disp);
/**
* Return with the sys. layer. (Same on every screen and it is above the normal screen and the top
* layer)
* @param disp pointer to display which sys. layer should be get. (NULL to use the default screen)
* @return pointer to the sys layer object (transparent screen sized lv_obj)
*/
lv_obj_t * lv_disp_get_layer_sys(lv_disp_t * disp);
/**
* Assign a screen to a display.
* @param disp pointer to a display where to assign the screen
* @param scr pointer to a screen object to assign
*/
void lv_disp_assign_screen(lv_disp_t * disp, lv_obj_t * scr);
/**
* Get elapsed time since last user activity on a display (e.g. click)
* @param disp pointer to an display (NULL to get the overall smallest inactivity)
* @return elapsed ticks (milliseconds) since the last activity
*/
uint32_t lv_disp_get_inactive_time(const lv_disp_t * disp);
/**
* Manually trigger an activity on a display
* @param disp pointer to an display (NULL to use the default display)
*/
void lv_disp_trig_activity(lv_disp_t * disp);
/**
* Get a pointer to the screen refresher task to
* modify its parameters with `lv_task_...` functions.
* @param disp pointer to a display
* @return pointer to the display refresher task. (NULL on error)
*/
lv_task_t * _lv_disp_get_refr_task(lv_disp_t * disp);
/*------------------------------------------------
* To improve backward compatibility
* Recommended only if you have one display
*------------------------------------------------*/
/**
* Get the active screen of the default display
* @return pointer to the active screen
*/
static inline lv_obj_t * lv_scr_act(void)
{
return lv_disp_get_scr_act(lv_disp_get_default());
}
/**
* Get the top layer of the default display
* @return pointer to the top layer
*/
static inline lv_obj_t * lv_layer_top(void)
{
return lv_disp_get_layer_top(lv_disp_get_default());
}
/**
* Get the active screen of the default display
* @return pointer to the sys layer
*/
static inline lv_obj_t * lv_layer_sys(void)
{
return lv_disp_get_layer_sys(lv_disp_get_default());
}
static inline void lv_scr_load(lv_obj_t * scr)
{
lv_disp_load_scr(scr);
}
/**********************
* MACROS
**********************/
/*------------------------------------------------
* To improve backward compatibility
* Recommended only if you have one display
*------------------------------------------------*/
#ifndef LV_HOR_RES
/**
* The horizontal resolution of the currently active display.
*/
#define LV_HOR_RES lv_disp_get_hor_res(lv_disp_get_default())
#endif
#ifndef LV_VER_RES
/**
* The vertical resolution of the currently active display.
*/
#define LV_VER_RES lv_disp_get_ver_res(lv_disp_get_default())
#endif
/**
* Same as Android's DIP. (Different name is chosen to avoid mistype between LV_DPI and LV_DIP)
* 1 dip is 1 px on a 160 DPI screen
* 1 dip is 2 px on a 320 DPI screen
* https://stackoverflow.com/questions/2025282/what-is-the-difference-between-px-dip-dp-and-sp
*/
#define LV_DPX(n) LV_MATH_MAX((( lv_disp_get_dpi(NULL) * (n) + 80) / 160), 1) /*+80 for rounding*/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_TEMPL_H*/

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/**
* @file lv_group.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_group.h"
#if LV_USE_GROUP != 0
#include <stddef.h>
#include "../lv_misc/lv_debug.h"
#include "../lv_themes/lv_theme.h"
#include "../lv_misc/lv_gc.h"
#if defined(LV_GC_INCLUDE)
#include LV_GC_INCLUDE
#endif /* LV_ENABLE_GC */
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void focus_next_core(lv_group_t * group, void * (*begin)(const lv_ll_t *),
void * (*move)(const lv_ll_t *, const void *));
static void lv_group_refocus(lv_group_t * g);
static void obj_to_foreground(lv_obj_t * obj);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Init. the group module
*/
void _lv_group_init(void)
{
_lv_ll_init(&LV_GC_ROOT(_lv_group_ll), sizeof(lv_group_t));
}
/**
* Create a new object group
* @return pointer to the new object group
*/
lv_group_t * lv_group_create(void)
{
lv_group_t * group = _lv_ll_ins_head(&LV_GC_ROOT(_lv_group_ll));
LV_ASSERT_MEM(group);
if(group == NULL) return NULL;
_lv_ll_init(&group->obj_ll, sizeof(lv_obj_t *));
group->obj_focus = NULL;
group->frozen = 0;
group->focus_cb = NULL;
group->click_focus = 1;
group->editing = 0;
group->refocus_policy = LV_GROUP_REFOCUS_POLICY_PREV;
group->wrap = 1;
#if LV_USE_USER_DATA
_lv_memset_00(&group->user_data, sizeof(lv_group_user_data_t));
#endif
return group;
}
/**
* Delete a group object
* @param group pointer to a group
*/
void lv_group_del(lv_group_t * group)
{
/*Defocus the the currently focused object*/
if(group->obj_focus != NULL) {
(*group->obj_focus)->signal_cb(*group->obj_focus, LV_SIGNAL_DEFOCUS, NULL);
lv_obj_invalidate(*group->obj_focus);
}
/*Remove the objects from the group*/
lv_obj_t ** obj;
_LV_LL_READ(group->obj_ll, obj) {
(*obj)->group_p = NULL;
}
_lv_ll_clear(&(group->obj_ll));
_lv_ll_remove(&LV_GC_ROOT(_lv_group_ll), group);
lv_mem_free(group);
}
/**
* Add an object to a group
* @param group pointer to a group
* @param obj pointer to an object to add
*/
void lv_group_add_obj(lv_group_t * group, lv_obj_t * obj)
{
if(group == NULL) return;
/*Do not add the object twice*/
lv_obj_t ** obj_i;
_LV_LL_READ(group->obj_ll, obj_i) {
if((*obj_i) == obj) {
LV_LOG_INFO("lv_group_add_obj: the object is already added to this group");
return;
}
}
/*If the object is already in a group and focused then defocus it*/
if(obj->group_p) {
if(lv_obj_is_focused(obj)) {
lv_group_refocus(obj->group_p);
LV_LOG_INFO("lv_group_add_obj: assign object to an other group");
}
}
obj->group_p = group;
lv_obj_t ** next = _lv_ll_ins_tail(&group->obj_ll);
LV_ASSERT_MEM(next);
if(next == NULL) return;
*next = obj;
/* If the head and the tail is equal then there is only one object in the linked list.
* In this case automatically activate it*/
if(_lv_ll_get_head(&group->obj_ll) == next) {
lv_group_refocus(group);
}
}
/**
* Remove an object from its group
* @param obj pointer to an object to remove
*/
void lv_group_remove_obj(lv_obj_t * obj)
{
lv_group_t * g = obj->group_p;
if(g == NULL) return;
if(g->obj_focus == NULL) return; /*Just to be sure (Not possible if there is at least one object in the group)*/
/*Focus on the next object*/
if(*g->obj_focus == obj) {
if(g->frozen) g->frozen = 0;
/*If this is the only object in the group then focus to nothing.*/
if(_lv_ll_get_head(&g->obj_ll) == g->obj_focus && _lv_ll_get_tail(&g->obj_ll) == g->obj_focus) {
(*g->obj_focus)->signal_cb(*g->obj_focus, LV_SIGNAL_DEFOCUS, NULL);
}
/*If there more objects in the group then focus to the next/prev object*/
else {
lv_group_refocus(g);
}
}
/* If the focuses object is still the same then it was the only object in the group but it will
* be deleted. Set the `obj_focus` to NULL to get back to the initial state of the group with
* zero objects*/
if(*g->obj_focus == obj) {
g->obj_focus = NULL;
}
/*Search the object and remove it from its group */
lv_obj_t ** i;
_LV_LL_READ(g->obj_ll, i) {
if(*i == obj) {
_lv_ll_remove(&g->obj_ll, i);
lv_mem_free(i);
obj->group_p = NULL;
break;
}
}
}
/**
* Remove all objects from a group
* @param group pointer to a group
*/
void lv_group_remove_all_objs(lv_group_t * group)
{
/*Defocus the the currently focused object*/
if(group->obj_focus != NULL) {
(*group->obj_focus)->signal_cb(*group->obj_focus, LV_SIGNAL_DEFOCUS, NULL);
lv_obj_invalidate(*group->obj_focus);
group->obj_focus = NULL;
}
/*Remove the objects from the group*/
lv_obj_t ** obj;
_LV_LL_READ(group->obj_ll, obj) {
(*obj)->group_p = NULL;
}
_lv_ll_clear(&(group->obj_ll));
}
/**
* Focus on an object (defocus the current)
* @param obj pointer to an object to focus on
*/
void lv_group_focus_obj(lv_obj_t * obj)
{
if(obj == NULL) return;
lv_group_t * g = obj->group_p;
if(g == NULL) return;
if(g->frozen != 0) return;
if(obj == *g->obj_focus) return;
/*On defocus edit mode must be leaved*/
lv_group_set_editing(g, false);
lv_obj_t ** i;
_LV_LL_READ(g->obj_ll, i) {
if(*i == obj) {
if(g->obj_focus != NULL) {
(*g->obj_focus)->signal_cb(*g->obj_focus, LV_SIGNAL_DEFOCUS, NULL);
lv_res_t res = lv_event_send(*g->obj_focus, LV_EVENT_DEFOCUSED, NULL);
if(res != LV_RES_OK) return;
lv_obj_invalidate(*g->obj_focus);
}
g->obj_focus = i;
if(g->obj_focus != NULL) {
(*g->obj_focus)->signal_cb(*g->obj_focus, LV_SIGNAL_FOCUS, NULL);
if(g->focus_cb) g->focus_cb(g);
lv_res_t res = lv_event_send(*g->obj_focus, LV_EVENT_FOCUSED, NULL);
if(res != LV_RES_OK) return;
lv_obj_invalidate(*g->obj_focus);
/*If the object or its parent has `top == true` bring it to the foreground*/
obj_to_foreground(*g->obj_focus);
}
break;
}
}
}
/**
* Focus the next object in a group (defocus the current)
* @param group pointer to a group
*/
void lv_group_focus_next(lv_group_t * group)
{
focus_next_core(group, _lv_ll_get_head, _lv_ll_get_next);
}
/**
* Focus the previous object in a group (defocus the current)
* @param group pointer to a group
*/
void lv_group_focus_prev(lv_group_t * group)
{
focus_next_core(group, _lv_ll_get_tail, _lv_ll_get_prev);
}
/**
* Do not let to change the focus from the current object
* @param group pointer to a group
* @param en true: freeze, false: release freezing (normal mode)
*/
void lv_group_focus_freeze(lv_group_t * group, bool en)
{
if(en == false)
group->frozen = 0;
else
group->frozen = 1;
}
/**
* Send a control character to the focuses object of a group
* @param group pointer to a group
* @param c a character (use LV_KEY_.. to navigate)
* @return result of focused object in group.
*/
lv_res_t lv_group_send_data(lv_group_t * group, uint32_t c)
{
lv_obj_t * act = lv_group_get_focused(group);
if(act == NULL) return LV_RES_OK;
lv_res_t res;
res = act->signal_cb(act, LV_SIGNAL_CONTROL, &c);
if(res != LV_RES_OK) return res;
res = lv_event_send(act, LV_EVENT_KEY, &c);
if(res != LV_RES_OK) return res;
return res;
}
/**
* Set a function for a group which will be called when a new object is focused
* @param group pointer to a group
* @param focus_cb the call back function or NULL if unused
*/
void lv_group_set_focus_cb(lv_group_t * group, lv_group_focus_cb_t focus_cb)
{
group->focus_cb = focus_cb;
}
/**
* Manually set the current mode (edit or navigate).
* @param group pointer to group
* @param edit: true: edit mode; false: navigate mode
*/
void lv_group_set_editing(lv_group_t * group, bool edit)
{
if(group == NULL) return;
uint8_t en_val = edit ? 1 : 0;
if(en_val == group->editing) return; /*Do not set the same mode again*/
group->editing = en_val;
lv_obj_t * focused = lv_group_get_focused(group);
if(focused) {
focused->signal_cb(focused, LV_SIGNAL_FOCUS, NULL); /*Focus again to properly leave/open edit/navigate mode*/
lv_res_t res = lv_event_send(*group->obj_focus, LV_EVENT_FOCUSED, NULL);
if(res != LV_RES_OK) return;
}
lv_obj_invalidate(focused);
}
/**
* Set the `click_focus` attribute. If enabled then the object will be focused then it is clicked.
* @param group pointer to group
* @param en: true: enable `click_focus`
*/
void lv_group_set_click_focus(lv_group_t * group, bool en)
{
group->click_focus = en ? 1 : 0;
}
void lv_group_set_refocus_policy(lv_group_t * group, lv_group_refocus_policy_t policy)
{
group->refocus_policy = policy & 0x01;
}
/**
* Set whether focus next/prev will allow wrapping from first->last or last->first.
* @param group pointer to group
* @param en: true: enable `wrap`
*/
void lv_group_set_wrap(lv_group_t * group, bool en)
{
group->wrap = en ? 1 : 0;
}
/**
* Get the focused object or NULL if there isn't one
* @param group pointer to a group
* @return pointer to the focused object
*/
lv_obj_t * lv_group_get_focused(const lv_group_t * group)
{
if(!group) return NULL;
if(group->obj_focus == NULL) return NULL;
return *group->obj_focus;
}
#if LV_USE_USER_DATA
/**
* Get a pointer to the group's user data
* @param group pointer to an group
* @return pointer to the user data
*/
lv_group_user_data_t * lv_group_get_user_data(lv_group_t * group)
{
return &group->user_data;
}
#endif
/**
* Get the focus callback function of a group
* @param group pointer to a group
* @return the call back function or NULL if not set
*/
lv_group_focus_cb_t lv_group_get_focus_cb(const lv_group_t * group)
{
if(!group) return NULL;
return group->focus_cb;
}
/**
* Get the current mode (edit or navigate).
* @param group pointer to group
* @return true: edit mode; false: navigate mode
*/
bool lv_group_get_editing(const lv_group_t * group)
{
if(!group) return false;
return group->editing ? true : false;
}
/**
* Get the `click_focus` attribute.
* @param group pointer to group
* @return true: `click_focus` is enabled; false: disabled
*/
bool lv_group_get_click_focus(const lv_group_t * group)
{
if(!group) return false;
return group->click_focus ? true : false;
}
/**
* Get whether focus next/prev will allow wrapping from first->last or last->first object.
* @param group pointer to group
* @param en: true: wrapping enabled; false: wrapping disabled
*/
bool lv_group_get_wrap(lv_group_t * group)
{
if(!group) return false;
return group->wrap ? true : false;
}
/**********************
* STATIC FUNCTIONS
**********************/
static void lv_group_refocus(lv_group_t * g)
{
/*Refocus must temporarily allow wrapping to work correctly*/
uint8_t temp_wrap = g->wrap;
g->wrap = 1;
if(g->refocus_policy == LV_GROUP_REFOCUS_POLICY_NEXT)
lv_group_focus_next(g);
else if(g->refocus_policy == LV_GROUP_REFOCUS_POLICY_PREV)
lv_group_focus_prev(g);
/*Restore wrap property*/
g->wrap = temp_wrap;
}
static void focus_next_core(lv_group_t * group, void * (*begin)(const lv_ll_t *),
void * (*move)(const lv_ll_t *, const void *))
{
if(group->frozen) return;
lv_obj_t ** obj_next = group->obj_focus;
lv_obj_t ** obj_sentinel = NULL;
bool can_move = true;
bool can_begin = true;
for(;;) {
if(obj_next == NULL) {
if(group->wrap || obj_sentinel == NULL) {
if(!can_begin) return;
obj_next = begin(&group->obj_ll);
can_move = false;
can_begin = false;
}
else {
/*Currently focused object is the last/first in the group, keep it that way*/
return;
}
}
if(obj_sentinel == NULL) {
obj_sentinel = obj_next;
if(obj_sentinel == NULL) return; /*Group is empty*/
}
if(can_move) {
obj_next = move(&group->obj_ll, obj_next);
/*Give up if we walked the entire list and haven't found another visible object*/
if(obj_next == obj_sentinel) return;
}
can_move = true;
if(obj_next == NULL) continue;
/*Hidden objects don't receive focus*/
if(!lv_obj_get_hidden(*obj_next)) break;
}
if(obj_next == group->obj_focus) return; /*There's only one visible object and it's already focused*/
if(group->obj_focus) {
(*group->obj_focus)->signal_cb(*group->obj_focus, LV_SIGNAL_DEFOCUS, NULL);
lv_res_t res = lv_event_send(*group->obj_focus, LV_EVENT_DEFOCUSED, NULL);
if(res != LV_RES_OK) return;
lv_obj_invalidate(*group->obj_focus);
}
group->obj_focus = obj_next;
(*group->obj_focus)->signal_cb(*group->obj_focus, LV_SIGNAL_FOCUS, NULL);
lv_res_t res = lv_event_send(*group->obj_focus, LV_EVENT_FOCUSED, NULL);
if(res != LV_RES_OK) return;
/*If the object or its parent has `top == true` bring it to the foreground*/
obj_to_foreground(*group->obj_focus);
lv_obj_invalidate(*group->obj_focus);
if(group->focus_cb) group->focus_cb(group);
}
static void obj_to_foreground(lv_obj_t * obj)
{
/*Search for 'top' attribute*/
lv_obj_t * i = obj;
lv_obj_t * last_top = NULL;
while(i != NULL) {
if(i->top != 0) last_top = i;
i = lv_obj_get_parent(i);
}
if(last_top != NULL) {
/*Move the last_top object to the foreground*/
lv_obj_move_foreground(last_top);
}
}
#endif /*LV_USE_GROUP != 0*/

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/**
* @file lv_group.h
*
*/
#ifndef LV_GROUP_H
#define LV_GROUP_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lv_obj.h"
/*********************
* DEFINES
*********************/
/*Predefined keys to control the focused object via lv_group_send(group, c)*/
/*For compatibility in signal function define the keys regardless to `LV_USE_GROUP`*/
enum {
LV_KEY_UP = 17, /*0x11*/
LV_KEY_DOWN = 18, /*0x12*/
LV_KEY_RIGHT = 19, /*0x13*/
LV_KEY_LEFT = 20, /*0x14*/
LV_KEY_ESC = 27, /*0x1B*/
LV_KEY_DEL = 127, /*0x7F*/
LV_KEY_BACKSPACE = 8, /*0x08*/
LV_KEY_ENTER = 10, /*0x0A, '\n'*/
LV_KEY_NEXT = 9, /*0x09, '\t'*/
LV_KEY_PREV = 11, /*0x0B, '*/
LV_KEY_HOME = 2, /*0x02, STX*/
LV_KEY_END = 3, /*0x03, ETX*/
};
typedef uint8_t lv_key_t;
#if LV_USE_GROUP != 0
/**********************
* TYPEDEFS
**********************/
struct _lv_group_t;
typedef void (*lv_group_style_mod_cb_t)(struct _lv_group_t *, lv_style_t *);
typedef void (*lv_group_focus_cb_t)(struct _lv_group_t *);
/**
* Groups can be used to logically hold objects so that they can be individually focused.
* They are NOT for laying out objects on a screen (try `lv_cont` for that).
*/
typedef struct _lv_group_t {
lv_ll_t obj_ll; /**< Linked list to store the objects in the group */
lv_obj_t ** obj_focus; /**< The object in focus*/
lv_group_focus_cb_t focus_cb; /**< A function to call when a new object is focused (optional)*/
#if LV_USE_USER_DATA
lv_group_user_data_t user_data;
#endif
uint8_t frozen : 1; /**< 1: can't focus to new object*/
uint8_t editing : 1; /**< 1: Edit mode, 0: Navigate mode*/
uint8_t click_focus : 1; /**< 1: If an object in a group is clicked by an indev then it will be
focused */
uint8_t refocus_policy : 1; /**< 1: Focus prev if focused on deletion. 0: Focus next if focused on
deletion.*/
uint8_t wrap : 1; /**< 1: Focus next/prev can wrap at end of list. 0: Focus next/prev stops at end
of list.*/
} lv_group_t;
enum { LV_GROUP_REFOCUS_POLICY_NEXT = 0, LV_GROUP_REFOCUS_POLICY_PREV = 1 };
typedef uint8_t lv_group_refocus_policy_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Init. the group module
* @remarks Internal function, do not call directly.
*/
void _lv_group_init(void);
/**
* Create a new object group
* @return pointer to the new object group
*/
lv_group_t * lv_group_create(void);
/**
* Delete a group object
* @param group pointer to a group
*/
void lv_group_del(lv_group_t * group);
/**
* Add an object to a group
* @param group pointer to a group
* @param obj pointer to an object to add
*/
void lv_group_add_obj(lv_group_t * group, lv_obj_t * obj);
/**
* Remove an object from its group
* @param obj pointer to an object to remove
*/
void lv_group_remove_obj(lv_obj_t * obj);
/**
* Remove all objects from a group
* @param group pointer to a group
*/
void lv_group_remove_all_objs(lv_group_t * group);
/**
* Focus on an object (defocus the current)
* @param obj pointer to an object to focus on
*/
void lv_group_focus_obj(lv_obj_t * obj);
/**
* Focus the next object in a group (defocus the current)
* @param group pointer to a group
*/
void lv_group_focus_next(lv_group_t * group);
/**
* Focus the previous object in a group (defocus the current)
* @param group pointer to a group
*/
void lv_group_focus_prev(lv_group_t * group);
/**
* Do not let to change the focus from the current object
* @param group pointer to a group
* @param en true: freeze, false: release freezing (normal mode)
*/
void lv_group_focus_freeze(lv_group_t * group, bool en);
/**
* Send a control character to the focuses object of a group
* @param group pointer to a group
* @param c a character (use LV_KEY_.. to navigate)
* @return result of focused object in group.
*/
lv_res_t lv_group_send_data(lv_group_t * group, uint32_t c);
/**
* Set a function for a group which will be called when a new object is focused
* @param group pointer to a group
* @param focus_cb the call back function or NULL if unused
*/
void lv_group_set_focus_cb(lv_group_t * group, lv_group_focus_cb_t focus_cb);
/**
* Set whether the next or previous item in a group is focused if the currently focused obj is
* deleted.
* @param group pointer to a group
* @param new refocus policy enum
*/
void lv_group_set_refocus_policy(lv_group_t * group, lv_group_refocus_policy_t policy);
/**
* Manually set the current mode (edit or navigate).
* @param group pointer to group
* @param edit: true: edit mode; false: navigate mode
*/
void lv_group_set_editing(lv_group_t * group, bool edit);
/**
* Set the `click_focus` attribute. If enabled then the object will be focused then it is clicked.
* @param group pointer to group
* @param en: true: enable `click_focus`
*/
void lv_group_set_click_focus(lv_group_t * group, bool en);
/**
* Set whether focus next/prev will allow wrapping from first->last or last->first object.
* @param group pointer to group
* @param en: true: wrapping enabled; false: wrapping disabled
*/
void lv_group_set_wrap(lv_group_t * group, bool en);
/**
* Get the focused object or NULL if there isn't one
* @param group pointer to a group
* @return pointer to the focused object
*/
lv_obj_t * lv_group_get_focused(const lv_group_t * group);
#if LV_USE_USER_DATA
/**
* Get a pointer to the group's user data
* @param group pointer to an group
* @return pointer to the user data
*/
lv_group_user_data_t * lv_group_get_user_data(lv_group_t * group);
#endif
/**
* Get the focus callback function of a group
* @param group pointer to a group
* @return the call back function or NULL if not set
*/
lv_group_focus_cb_t lv_group_get_focus_cb(const lv_group_t * group);
/**
* Get the current mode (edit or navigate).
* @param group pointer to group
* @return true: edit mode; false: navigate mode
*/
bool lv_group_get_editing(const lv_group_t * group);
/**
* Get the `click_focus` attribute.
* @param group pointer to group
* @return true: `click_focus` is enabled; false: disabled
*/
bool lv_group_get_click_focus(const lv_group_t * group);
/**
* Get whether focus next/prev will allow wrapping from first->last or last->first object.
* @param group pointer to group
* @param en: true: wrapping enabled; false: wrapping disabled
*/
bool lv_group_get_wrap(lv_group_t * group);
/**********************
* MACROS
**********************/
#endif /*LV_USE_GROUP != 0*/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_GROUP_H*/

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/**
* @file lv_indev.h
*
*/
#ifndef LV_INDEV_H
#define LV_INDEV_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lv_obj.h"
#include "../lv_hal/lv_hal_indev.h"
#include "../lv_core/lv_group.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Initialize the display input device subsystem
*/
void _lv_indev_init(void);
/**
* Called periodically to read the input devices
* @param task pointer to the task itself
*/
void _lv_indev_read_task(lv_task_t * task);
/**
* Get the currently processed input device. Can be used in action functions too.
* @return pointer to the currently processed input device or NULL if no input device processing
* right now
*/
lv_indev_t * lv_indev_get_act(void);
/**
* Get the type of an input device
* @param indev pointer to an input device
* @return the type of the input device from `lv_hal_indev_type_t` (`LV_INDEV_TYPE_...`)
*/
lv_indev_type_t lv_indev_get_type(const lv_indev_t * indev);
/**
* Reset one or all input devices
* @param indev pointer to an input device to reset or NULL to reset all of them
* @param obj pointer to an object which triggers the reset.
*/
void lv_indev_reset(lv_indev_t * indev, lv_obj_t * obj);
/**
* Reset the long press state of an input device
* @param indev_proc pointer to an input device
*/
void lv_indev_reset_long_press(lv_indev_t * indev);
/**
* Enable or disable an input devices
* @param indev pointer to an input device
* @param en true: enable; false: disable
*/
void lv_indev_enable(lv_indev_t * indev, bool en);
/**
* Set a cursor for a pointer input device (for LV_INPUT_TYPE_POINTER and LV_INPUT_TYPE_BUTTON)
* @param indev pointer to an input device
* @param cur_obj pointer to an object to be used as cursor
*/
void lv_indev_set_cursor(lv_indev_t * indev, lv_obj_t * cur_obj);
#if LV_USE_GROUP
/**
* Set a destination group for a keypad input device (for LV_INDEV_TYPE_KEYPAD)
* @param indev pointer to an input device
* @param group point to a group
*/
void lv_indev_set_group(lv_indev_t * indev, lv_group_t * group);
#endif
/**
* Set the an array of points for LV_INDEV_TYPE_BUTTON.
* These points will be assigned to the buttons to press a specific point on the screen
* @param indev pointer to an input device
* @param group point to a group
*/
void lv_indev_set_button_points(lv_indev_t * indev, const lv_point_t points[]);
/**
* Get the last point of an input device (for LV_INDEV_TYPE_POINTER and LV_INDEV_TYPE_BUTTON)
* @param indev pointer to an input device
* @param point pointer to a point to store the result
*/
void lv_indev_get_point(const lv_indev_t * indev, lv_point_t * point);
/**
* Get the current gesture direct
* @param indev pointer to an input device
* @return current gesture direct
*/
lv_gesture_dir_t lv_indev_get_gesture_dir(const lv_indev_t * indev);
/**
* Get the last pressed key of an input device (for LV_INDEV_TYPE_KEYPAD)
* @param indev pointer to an input device
* @return the last pressed key (0 on error)
*/
uint32_t lv_indev_get_key(const lv_indev_t * indev);
/**
* Check if there is dragging with an input device or not (for LV_INDEV_TYPE_POINTER and
* LV_INDEV_TYPE_BUTTON)
* @param indev pointer to an input device
* @return true: drag is in progress
*/
bool lv_indev_is_dragging(const lv_indev_t * indev);
/**
* Get the vector of dragging of an input device (for LV_INDEV_TYPE_POINTER and
* LV_INDEV_TYPE_BUTTON)
* @param indev pointer to an input device
* @param point pointer to a point to store the vector
*/
void lv_indev_get_vect(const lv_indev_t * indev, lv_point_t * point);
/**
* Manually finish dragging.
* `LV_SIGNAL_DRAG_END` and `LV_EVENT_DRAG_END` will be sent.
* @param indev pointer to an input device
* @return `LV_RES_INV` if the object being dragged was deleted. Else `LV_RES_OK`.
*/
lv_res_t lv_indev_finish_drag(lv_indev_t * indev);
/**
* Do nothing until the next release
* @param indev pointer to an input device
*/
void lv_indev_wait_release(lv_indev_t * indev);
/**
* Gets a pointer to the currently active object in indev proc functions.
* NULL if no object is currently being handled or if groups aren't used.
* @return pointer to currently active object
*/
lv_obj_t * lv_indev_get_obj_act(void);
/**
* Search the most top, clickable object by a point
* @param obj pointer to a start object, typically the screen
* @param point pointer to a point for searching the most top child
* @return pointer to the found object or NULL if there was no suitable object
*/
lv_obj_t * lv_indev_search_obj(lv_obj_t * obj, lv_point_t * point);
/**
* Get a pointer to the indev read task to
* modify its parameters with `lv_task_...` functions.
* @param indev pointer to an inout device
* @return pointer to the indev read refresher task. (NULL on error)
*/
lv_task_t * lv_indev_get_read_task(lv_disp_t * indev);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_INDEV_H*/

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/**
* @file lv_obj_style_dec.h
*
*/
#ifndef LV_OBJ_STYLE_DEC_H
#define LV_OBJ_STYLE_DEC_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* DEFINES
*********************/
/**
* Macro to declare the most important style set/get API functions.
*
* Get the value of a style property from an object in the object's current state
* -----------------------------------------------------------------------------
* - Get the value of a style property from an object in the object's current state.
* - Transition animation is taken into account.
* - If the property is not set in the object's styles check the parent(s) if the property can be inherited
* - If still not found return a default value.
* - For example:
* `lv_style_int_t w = lv_obj_get_style_border_width(btn1, LV_BTN_PART_MAIN);`
*
* Set a local style property for an object in a given state
* ---------------------------------------------------------
* - For example:
* `lv_obj_set_style_local_border_width(btn1, LV_BTN_PART_MAIN, LV_STATE_PRESSED, 2);`
*
* Get a local style property's value of an object in a given state
* ----------------------------------------------------------------
* - Return the best matching property in the given state.
* - E.g. if `state` parameter is LV_STATE_PRESSED | LV_STATE_CHECKED` but the property defined only in
* `LV_STATE_PRESSED` and `LV_STATE_DEFAULT` the best matching state is `LV_STATE_PRESSED`
* (because it has higher precedence) and it will be returned.
* - If the property is not found even in `LV_STATE_DEFAULT` `-1` is returned.
* - For example:
* `//Type of result should be lv_style_int_t/lv_opa_t/lv_color_t/const void * according to the type of the property`
* `lv_style_int_t result;`
* `lv_obj_get_style_local_border_width(btn1, LV_BTN_PART_MAIN, LV_STATE_PRESSED, &result);`
* `if(weight > 0) ...the property is found and loaded into result...`
*
* Get the value from a style in a given state
* -------------------------------------------
* - The same rules applies to the return value then for "lv_obj_get_style_local_...()" above
* - For example
* `int16_t weight = lv_style_get_border_width(&style1, LV_STATE_PRESSED, &result);`
* `if(weight > 0) ...the property is found and loaded into result...`
* Set a value in a style in a given state
* ---------------------------------------
* - For example
* `lv_style_set_border_width(&style1, LV_STATE_PRESSED, 2);`
*/
#define _OBJ_GET_STYLE_scalar(prop_name, func_name, value_type, style_type) \
static inline value_type lv_obj_get_style_##func_name (const lv_obj_t * obj, uint8_t part) \
{ \
return (value_type) _lv_obj_get_style##style_type (obj, part, LV_STYLE_##prop_name); \
}
#define _OBJ_GET_STYLE_nonscalar(prop_name, func_name, value_type, style_type) \
static inline value_type lv_obj_get_style_##func_name (const lv_obj_t * obj, uint8_t part) \
{ \
return _lv_obj_get_style##style_type (obj, part, LV_STYLE_##prop_name); \
}
#define _OBJ_SET_STYLE_LOCAL_scalar(prop_name, func_name, value_type, style_type) \
static inline void lv_obj_set_style_local_##func_name (lv_obj_t * obj, uint8_t part, lv_state_t state, value_type value) \
{ \
_lv_obj_set_style_local##style_type (obj, part, LV_STYLE_##prop_name | (state << LV_STYLE_STATE_POS), value); \
}
#define _OBJ_SET_STYLE_LOCAL_nonscalar(prop_name, func_name, value_type, style_type) \
static inline void lv_obj_set_style_local_##func_name (lv_obj_t * obj, uint8_t part, lv_state_t state, value_type value) \
{ \
_lv_obj_set_style_local##style_type (obj, part, LV_STYLE_##prop_name | (state << LV_STYLE_STATE_POS), value); \
}
#define _OBJ_SET_STYLE_scalar(prop_name, func_name, value_type, style_type) \
static inline void lv_style_set_##func_name (lv_style_t * style, lv_state_t state, value_type value) \
{ \
_lv_style_set##style_type (style, LV_STYLE_##prop_name | (state << LV_STYLE_STATE_POS), value); \
}
#define _OBJ_SET_STYLE_nonscalar(prop_name, func_name, value_type, style_type) \
static inline void lv_style_set_##func_name (lv_style_t * style, lv_state_t state, value_type value) \
{ \
_lv_style_set##style_type (style, LV_STYLE_##prop_name | (state << LV_STYLE_STATE_POS), value); \
}
#define _LV_OBJ_STYLE_SET_GET_DECLARE(prop_name, func_name, value_type, style_type, scalar) \
_OBJ_GET_STYLE_##scalar(prop_name, func_name, value_type, style_type) \
_OBJ_SET_STYLE_LOCAL_##scalar(prop_name, func_name, value_type, style_type) \
_OBJ_SET_STYLE_##scalar(prop_name, func_name, value_type, style_type)
_LV_OBJ_STYLE_SET_GET_DECLARE(RADIUS, radius, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(CLIP_CORNER, clip_corner, bool, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(SIZE, size, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSFORM_WIDTH, transform_width, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSFORM_HEIGHT, transform_height, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSFORM_ANGLE, transform_angle, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSFORM_ZOOM, transform_zoom, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(OPA_SCALE, opa_scale, lv_opa_t, _opa, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(PAD_TOP, pad_top, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(PAD_BOTTOM, pad_bottom, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(PAD_LEFT, pad_left, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(PAD_RIGHT, pad_right, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(PAD_INNER, pad_inner, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(MARGIN_TOP, margin_top, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(MARGIN_BOTTOM, margin_bottom, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(MARGIN_LEFT, margin_left, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(MARGIN_RIGHT, margin_right, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(BG_BLEND_MODE, bg_blend_mode, lv_blend_mode_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(BG_MAIN_STOP, bg_main_stop, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(BG_GRAD_STOP, bg_grad_stop, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(BG_GRAD_DIR, bg_grad_dir, lv_grad_dir_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(BG_COLOR, bg_color, lv_color_t, _color, nonscalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(BG_GRAD_COLOR, bg_grad_color, lv_color_t, _color, nonscalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(BG_OPA, bg_opa, lv_opa_t, _opa, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(BORDER_WIDTH, border_width, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(BORDER_SIDE, border_side, lv_border_side_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(BORDER_BLEND_MODE, border_blend_mode, lv_blend_mode_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(BORDER_POST, border_post, bool, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(BORDER_COLOR, border_color, lv_color_t, _color, nonscalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(BORDER_OPA, border_opa, lv_opa_t, _opa, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(OUTLINE_WIDTH, outline_width, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(OUTLINE_PAD, outline_pad, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(OUTLINE_BLEND_MODE, outline_blend_mode, lv_blend_mode_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(OUTLINE_COLOR, outline_color, lv_color_t, _color, nonscalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(OUTLINE_OPA, outline_opa, lv_opa_t, _opa, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(SHADOW_WIDTH, shadow_width, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(SHADOW_OFS_X, shadow_ofs_x, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(SHADOW_OFS_Y, shadow_ofs_y, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(SHADOW_SPREAD, shadow_spread, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(SHADOW_BLEND_MODE, shadow_blend_mode, lv_blend_mode_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(SHADOW_COLOR, shadow_color, lv_color_t, _color, nonscalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(SHADOW_OPA, shadow_opa, lv_opa_t, _opa, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(PATTERN_REPEAT, pattern_repeat, bool, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(PATTERN_BLEND_MODE, pattern_blend_mode, lv_blend_mode_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(PATTERN_RECOLOR, pattern_recolor, lv_color_t, _color, nonscalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(PATTERN_OPA, pattern_opa, lv_opa_t, _opa, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(PATTERN_RECOLOR_OPA, pattern_recolor_opa, lv_opa_t, _opa, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(PATTERN_IMAGE, pattern_image, const void *, _ptr, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(VALUE_LETTER_SPACE, value_letter_space, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(VALUE_LINE_SPACE, value_line_space, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(VALUE_BLEND_MODE, value_blend_mode, lv_blend_mode_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(VALUE_OFS_X, value_ofs_x, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(VALUE_OFS_Y, value_ofs_y, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(VALUE_ALIGN, value_align, lv_align_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(VALUE_COLOR, value_color, lv_color_t, _color, nonscalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(VALUE_OPA, value_opa, lv_opa_t, _opa, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(VALUE_FONT, value_font, const lv_font_t *, _ptr, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(VALUE_STR, value_str, const char *, _ptr, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TEXT_LETTER_SPACE, text_letter_space, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TEXT_LINE_SPACE, text_line_space, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TEXT_DECOR, text_decor, lv_text_decor_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TEXT_BLEND_MODE, text_blend_mode, lv_blend_mode_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TEXT_COLOR, text_color, lv_color_t, _color, nonscalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TEXT_SEL_COLOR, text_sel_color, lv_color_t, _color, nonscalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TEXT_OPA, text_opa, lv_opa_t, _opa, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TEXT_FONT, text_font, const lv_font_t *, _ptr, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(LINE_WIDTH, line_width, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(LINE_BLEND_MODE, line_blend_mode, lv_blend_mode_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(LINE_DASH_WIDTH, line_dash_width, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(LINE_DASH_GAP, line_dash_gap, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(LINE_ROUNDED, line_rounded, bool, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(LINE_COLOR, line_color, lv_color_t, _color, nonscalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(LINE_OPA, line_opa, lv_opa_t, _opa, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(IMAGE_BLEND_MODE, image_blend_mode, lv_blend_mode_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(IMAGE_RECOLOR, image_recolor, lv_color_t, _color, nonscalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(IMAGE_OPA, image_opa, lv_opa_t, _opa, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(IMAGE_RECOLOR_OPA, image_recolor_opa, lv_opa_t, _opa, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSITION_TIME, transition_time, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSITION_DELAY, transition_delay, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSITION_PROP_1, transition_prop_1, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSITION_PROP_2, transition_prop_2, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSITION_PROP_3, transition_prop_3, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSITION_PROP_4, transition_prop_4, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSITION_PROP_5, transition_prop_5, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSITION_PROP_6, transition_prop_6, lv_style_int_t, _int, scalar)
#if LV_USE_ANIMATION
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSITION_PATH, transition_path, lv_anim_path_t *, _ptr, scalar)
#else
/*For compatibility*/
_LV_OBJ_STYLE_SET_GET_DECLARE(TRANSITION_PATH, transition_path, const void *, _ptr, scalar)
#endif
_LV_OBJ_STYLE_SET_GET_DECLARE(SCALE_WIDTH, scale_width, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(SCALE_BORDER_WIDTH, scale_border_width, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(SCALE_END_BORDER_WIDTH, scale_end_border_width, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(SCALE_END_LINE_WIDTH, scale_end_line_width, lv_style_int_t, _int, scalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(SCALE_GRAD_COLOR, scale_grad_color, lv_color_t, _color, nonscalar)
_LV_OBJ_STYLE_SET_GET_DECLARE(SCALE_END_COLOR, scale_end_color, lv_color_t, _color, nonscalar)
#undef _LV_OBJ_STYLE_SET_GET_DECLARE
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_OBJ_H*/

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/**
* @file lv_refr.c
*
*/
/*********************
* INCLUDES
*********************/
#include <stddef.h>
#include "lv_refr.h"
#include "lv_disp.h"
#include "../lv_hal/lv_hal_tick.h"
#include "../lv_hal/lv_hal_disp.h"
#include "../lv_misc/lv_task.h"
#include "../lv_misc/lv_mem.h"
#include "../lv_misc/lv_math.h"
#include "../lv_misc/lv_gc.h"
#include "../lv_draw/lv_draw.h"
#include "../lv_font/lv_font_fmt_txt.h"
#include "../lv_gpu/lv_gpu_stm32_dma2d.h"
#if LV_USE_PERF_MONITOR
#include "../lv_widgets/lv_label.h"
#endif
#if defined(LV_GC_INCLUDE)
#include LV_GC_INCLUDE
#endif /* LV_ENABLE_GC */
/*********************
* DEFINES
*********************/
/* Draw translucent random colored areas on the invalidated (redrawn) areas*/
#define MASK_AREA_DEBUG 0
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_refr_join_area(void);
static void lv_refr_areas(void);
static void lv_refr_area(const lv_area_t * area_p);
static void lv_refr_area_part(const lv_area_t * area_p);
static lv_obj_t * lv_refr_get_top_obj(const lv_area_t * area_p, lv_obj_t * obj);
static void lv_refr_obj_and_children(lv_obj_t * top_p, const lv_area_t * mask_p);
static void lv_refr_obj(lv_obj_t * obj, const lv_area_t * mask_ori_p);
static void lv_refr_vdb_flush(void);
/**********************
* STATIC VARIABLES
**********************/
static uint32_t px_num;
static lv_disp_t * disp_refr; /*Display being refreshed*/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize the screen refresh subsystem
*/
void _lv_refr_init(void)
{
/*Nothing to do*/
}
/**
* Redraw the invalidated areas now.
* Normally the redrawing is periodically executed in `lv_task_handler` but a long blocking process
* can prevent the call of `lv_task_handler`. In this case if the the GUI is updated in the process
* (e.g. progress bar) this function can be called when the screen should be updated.
* @param disp pointer to display to refresh. NULL to refresh all displays.
*/
void lv_refr_now(lv_disp_t * disp)
{
#if LV_USE_ANIMATION
lv_anim_refr_now();
#endif
if(disp) {
_lv_disp_refr_task(disp->refr_task);
}
else {
lv_disp_t * d;
d = lv_disp_get_next(NULL);
while(d) {
_lv_disp_refr_task(d->refr_task);
d = lv_disp_get_next(d);
}
}
}
/**
* Invalidate an area on display to redraw it
* @param area_p pointer to area which should be invalidated (NULL: delete the invalidated areas)
* @param disp pointer to display where the area should be invalidated (NULL can be used if there is
* only one display)
*/
void _lv_inv_area(lv_disp_t * disp, const lv_area_t * area_p)
{
if(!disp) disp = lv_disp_get_default();
if(!disp) return;
/*Clear the invalidate buffer if the parameter is NULL*/
if(area_p == NULL) {
disp->inv_p = 0;
return;
}
lv_area_t scr_area;
scr_area.x1 = 0;
scr_area.y1 = 0;
scr_area.x2 = lv_disp_get_hor_res(disp) - 1;
scr_area.y2 = lv_disp_get_ver_res(disp) - 1;
lv_area_t com_area;
bool suc;
suc = _lv_area_intersect(&com_area, area_p, &scr_area);
/*The area is truncated to the screen*/
if(suc != false) {
if(disp->driver.rounder_cb) disp->driver.rounder_cb(&disp->driver, &com_area);
/*Save only if this area is not in one of the saved areas*/
uint16_t i;
for(i = 0; i < disp->inv_p; i++) {
if(_lv_area_is_in(&com_area, &disp->inv_areas[i], 0) != false) return;
}
/*Save the area*/
if(disp->inv_p < LV_INV_BUF_SIZE) {
lv_area_copy(&disp->inv_areas[disp->inv_p], &com_area);
}
else { /*If no place for the area add the screen*/
disp->inv_p = 0;
lv_area_copy(&disp->inv_areas[disp->inv_p], &scr_area);
}
disp->inv_p++;
lv_task_set_prio(disp->refr_task, LV_REFR_TASK_PRIO);
}
}
/**
* Get the display which is being refreshed
* @return the display being refreshed
*/
lv_disp_t * _lv_refr_get_disp_refreshing(void)
{
return disp_refr;
}
/**
* Set the display which is being refreshed.
* It shouldn't be used directly by the user.
* It can be used to trick the drawing functions about there is an active display.
* @param the display being refreshed
*/
void _lv_refr_set_disp_refreshing(lv_disp_t * disp)
{
disp_refr = disp;
}
/**
* Called periodically to handle the refreshing
* @param task pointer to the task itself
*/
void _lv_disp_refr_task(lv_task_t * task)
{
LV_LOG_TRACE("lv_refr_task: started");
uint32_t start = lv_tick_get();
uint32_t elaps = 0;
disp_refr = task->user_data;
#if LV_USE_PERF_MONITOR == 0
/* Ensure the task does not run again automatically.
* This is done before refreshing in case refreshing invalidates something else.
*/
lv_task_set_prio(task, LV_TASK_PRIO_OFF);
#endif
/*Do nothing if there is no active screen*/
if(disp_refr->act_scr == NULL) {
disp_refr->inv_p = 0;
return;
}
lv_refr_join_area();
lv_refr_areas();
/*If refresh happened ...*/
if(disp_refr->inv_p != 0) {
/* In true double buffered mode copy the refreshed areas to the new VDB to keep it up to date.
* With set_px_cb we don't know anything about the buffer (even it's size) so skip copying.*/
if(lv_disp_is_true_double_buf(disp_refr)) {
if(disp_refr->driver.set_px_cb) {
LV_LOG_WARN("Can't handle 2 screen sized buffers with set_px_cb. Display is not refreshed.");
} else {
lv_disp_buf_t * vdb = lv_disp_get_buf(disp_refr);
/*Flush the content of the VDB*/
lv_refr_vdb_flush();
/* With true double buffering the flushing should be only the address change of the
* current frame buffer. Wait until the address change is ready and copy the changed
* content to the other frame buffer (new active VDB) to keep the buffers synchronized*/
while(vdb->flushing);
lv_color_t * copy_buf = NULL;
#if LV_USE_GPU_STM32_DMA2D
LV_UNUSED(copy_buf);
#else
copy_buf = _lv_mem_buf_get(disp_refr->driver.hor_res * sizeof(lv_color_t));
#endif
uint8_t * buf_act = (uint8_t *)vdb->buf_act;
uint8_t * buf_ina = (uint8_t *)vdb->buf_act == vdb->buf1 ? vdb->buf2 : vdb->buf1;
lv_coord_t hres = lv_disp_get_hor_res(disp_refr);
uint16_t a;
for(a = 0; a < disp_refr->inv_p; a++) {
if(disp_refr->inv_area_joined[a] == 0) {
uint32_t start_offs =
(hres * disp_refr->inv_areas[a].y1 + disp_refr->inv_areas[a].x1) * sizeof(lv_color_t);
#if LV_USE_GPU_STM32_DMA2D
lv_gpu_stm32_dma2d_copy((lv_color_t *)(buf_act + start_offs), disp_refr->driver.hor_res,
(lv_color_t *)(buf_ina + start_offs), disp_refr->driver.hor_res,
lv_area_get_width(&disp_refr->inv_areas[a]),
lv_area_get_height(&disp_refr->inv_areas[a]));
#else
lv_coord_t y;
uint32_t line_length = lv_area_get_width(&disp_refr->inv_areas[a]) * sizeof(lv_color_t);
for(y = disp_refr->inv_areas[a].y1; y <= disp_refr->inv_areas[a].y2; y++) {
/* The frame buffer is probably in an external RAM where sequential access is much faster.
* So first copy a line into a buffer and write it back the ext. RAM */
_lv_memcpy(copy_buf, buf_ina + start_offs, line_length);
_lv_memcpy(buf_act + start_offs, copy_buf, line_length);
start_offs += hres * sizeof(lv_color_t);
}
#endif
}
}
if(copy_buf) _lv_mem_buf_release(copy_buf);
}
} /*End of true double buffer handling*/
/*Clean up*/
_lv_memset_00(disp_refr->inv_areas, sizeof(disp_refr->inv_areas));
_lv_memset_00(disp_refr->inv_area_joined, sizeof(disp_refr->inv_area_joined));
disp_refr->inv_p = 0;
elaps = lv_tick_elaps(start);
/*Call monitor cb if present*/
if(disp_refr->driver.monitor_cb) {
disp_refr->driver.monitor_cb(&disp_refr->driver, elaps, px_num);
}
}
_lv_mem_buf_free_all();
_lv_font_clean_up_fmt_txt();
#if LV_USE_PERF_MONITOR && LV_USE_LABEL
static lv_obj_t * perf_label = NULL;
if(perf_label == NULL) {
perf_label = lv_label_create(lv_layer_sys(), NULL);
lv_label_set_align(perf_label, LV_LABEL_ALIGN_RIGHT);
lv_obj_set_style_local_bg_opa(perf_label, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_OPA_COVER);
lv_obj_set_style_local_bg_color(perf_label, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_BLACK);
lv_obj_set_style_local_text_color(perf_label, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_WHITE);
lv_obj_set_style_local_pad_top(perf_label, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, 3);
lv_obj_set_style_local_pad_bottom(perf_label, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, 3);
lv_obj_set_style_local_pad_left(perf_label, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, 3);
lv_obj_set_style_local_pad_right(perf_label, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, 3);
lv_label_set_text(perf_label, "?");
lv_obj_align(perf_label, NULL, LV_ALIGN_IN_BOTTOM_RIGHT, 0, 0);
}
static uint32_t perf_last_time = 0;
static uint32_t elaps_max = 1;
if(lv_tick_elaps(perf_last_time) < 300) {
elaps_max = LV_MATH_MAX(elaps, elaps_max);
}
else {
perf_last_time = lv_tick_get();
uint32_t fps = 1000 / (elaps_max == 0 ? 1 : elaps_max);
elaps_max = 1;
uint32_t fps_limit = 1000 / disp_refr->refr_task->period;
if(fps > fps_limit) fps = fps_limit;
uint32_t cpu = 100 - lv_task_get_idle();
lv_label_set_text_fmt(perf_label, "%d FPS\n%d%% CPU", fps, cpu);
lv_obj_align(perf_label, NULL, LV_ALIGN_IN_BOTTOM_RIGHT, 0, 0);
}
#endif
LV_LOG_TRACE("lv_refr_task: ready");
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Join the areas which has got common parts
*/
static void lv_refr_join_area(void)
{
uint32_t join_from;
uint32_t join_in;
lv_area_t joined_area;
for(join_in = 0; join_in < disp_refr->inv_p; join_in++) {
if(disp_refr->inv_area_joined[join_in] != 0) continue;
/*Check all areas to join them in 'join_in'*/
for(join_from = 0; join_from < disp_refr->inv_p; join_from++) {
/*Handle only unjoined areas and ignore itself*/
if(disp_refr->inv_area_joined[join_from] != 0 || join_in == join_from) {
continue;
}
/*Check if the areas are on each other*/
if(_lv_area_is_on(&disp_refr->inv_areas[join_in], &disp_refr->inv_areas[join_from]) == false) {
continue;
}
_lv_area_join(&joined_area, &disp_refr->inv_areas[join_in], &disp_refr->inv_areas[join_from]);
/*Join two area only if the joined area size is smaller*/
if(lv_area_get_size(&joined_area) < (lv_area_get_size(&disp_refr->inv_areas[join_in]) +
lv_area_get_size(&disp_refr->inv_areas[join_from]))) {
lv_area_copy(&disp_refr->inv_areas[join_in], &joined_area);
/*Mark 'join_form' is joined into 'join_in'*/
disp_refr->inv_area_joined[join_from] = 1;
}
}
}
}
/**
* Refresh the joined areas
*/
static void lv_refr_areas(void)
{
px_num = 0;
if(disp_refr->inv_p == 0) return;
/*Find the last area which will be drawn*/
int32_t i;
int32_t last_i = 0;
for(i = disp_refr->inv_p - 1; i >= 0; i--) {
if(disp_refr->inv_area_joined[i] == 0) {
last_i = i;
break;
}
}
disp_refr->driver.buffer->last_area = 0;
disp_refr->driver.buffer->last_part = 0;
for(i = 0; i < disp_refr->inv_p; i++) {
/*Refresh the unjoined areas*/
if(disp_refr->inv_area_joined[i] == 0) {
if(i == last_i) disp_refr->driver.buffer->last_area = 1;
disp_refr->driver.buffer->last_part = 0;
lv_refr_area(&disp_refr->inv_areas[i]);
if(disp_refr->driver.monitor_cb) px_num += lv_area_get_size(&disp_refr->inv_areas[i]);
}
}
}
/**
* Refresh an area if there is Virtual Display Buffer
* @param area_p pointer to an area to refresh
*/
static void lv_refr_area(const lv_area_t * area_p)
{
/*True double buffering: there are two screen sized buffers. Just redraw directly into a
* buffer*/
if(lv_disp_is_true_double_buf(disp_refr)) {
lv_disp_buf_t * vdb = lv_disp_get_buf(disp_refr);
vdb->area.x1 = 0;
vdb->area.x2 = lv_disp_get_hor_res(disp_refr) - 1;
vdb->area.y1 = 0;
vdb->area.y2 = lv_disp_get_ver_res(disp_refr) - 1;
disp_refr->driver.buffer->last_part = 1;
lv_refr_area_part(area_p);
}
/*The buffer is smaller: refresh the area in parts*/
else {
lv_disp_buf_t * vdb = lv_disp_get_buf(disp_refr);
/*Calculate the max row num*/
lv_coord_t w = lv_area_get_width(area_p);
lv_coord_t h = lv_area_get_height(area_p);
lv_coord_t y2 =
area_p->y2 >= lv_disp_get_ver_res(disp_refr) ? lv_disp_get_ver_res(disp_refr) - 1 : area_p->y2;
int32_t max_row = (uint32_t)vdb->size / w;
if(max_row > h) max_row = h;
/*Round down the lines of VDB if rounding is added*/
if(disp_refr->driver.rounder_cb) {
lv_area_t tmp;
tmp.x1 = 0;
tmp.x2 = 0;
tmp.y1 = 0;
lv_coord_t h_tmp = max_row;
do {
tmp.y2 = h_tmp - 1;
disp_refr->driver.rounder_cb(&disp_refr->driver, &tmp);
/*If this height fits into `max_row` then fine*/
if(lv_area_get_height(&tmp) <= max_row) break;
/*Decrement the height of the area until it fits into `max_row` after rounding*/
h_tmp--;
} while(h_tmp > 0);
if(h_tmp <= 0) {
LV_LOG_WARN("Can't set VDB height using the round function. (Wrong round_cb or to "
"small VDB)");
return;
}
else {
max_row = tmp.y2 + 1;
}
}
/*Always use the full row*/
lv_coord_t row;
lv_coord_t row_last = 0;
for(row = area_p->y1; row + max_row - 1 <= y2; row += max_row) {
/*Calc. the next y coordinates of VDB*/
vdb->area.x1 = area_p->x1;
vdb->area.x2 = area_p->x2;
vdb->area.y1 = row;
vdb->area.y2 = row + max_row - 1;
if(vdb->area.y2 > y2) vdb->area.y2 = y2;
row_last = vdb->area.y2;
if(y2 == row_last) disp_refr->driver.buffer->last_part = 1;
lv_refr_area_part(area_p);
}
/*If the last y coordinates are not handled yet ...*/
if(y2 != row_last) {
/*Calc. the next y coordinates of VDB*/
vdb->area.x1 = area_p->x1;
vdb->area.x2 = area_p->x2;
vdb->area.y1 = row;
vdb->area.y2 = y2;
disp_refr->driver.buffer->last_part = 1;
lv_refr_area_part(area_p);
}
}
}
/**
* Refresh a part of an area which is on the actual Virtual Display Buffer
* @param area_p pointer to an area to refresh
*/
static void lv_refr_area_part(const lv_area_t * area_p)
{
lv_disp_buf_t * vdb = lv_disp_get_buf(disp_refr);
/*In non double buffered mode, before rendering the next part wait until the previous image is
* flushed*/
if(lv_disp_is_double_buf(disp_refr) == false) {
while(vdb->flushing) {
if(disp_refr->driver.wait_cb) disp_refr->driver.wait_cb(&disp_refr->driver);
}
}
lv_obj_t * top_p;
/*Get the new mask from the original area and the act. VDB
It will be a part of 'area_p'*/
lv_area_t start_mask;
_lv_area_intersect(&start_mask, area_p, &vdb->area);
/*Get the most top object which is not covered by others*/
top_p = lv_refr_get_top_obj(&start_mask, lv_disp_get_scr_act(disp_refr));
/*Do the refreshing from the top object*/
lv_refr_obj_and_children(top_p, &start_mask);
/*Also refresh top and sys layer unconditionally*/
lv_refr_obj_and_children(lv_disp_get_layer_top(disp_refr), &start_mask);
lv_refr_obj_and_children(lv_disp_get_layer_sys(disp_refr), &start_mask);
/* In true double buffered mode flush only once when all areas were rendered.
* In normal mode flush after every area */
if(lv_disp_is_true_double_buf(disp_refr) == false) {
lv_refr_vdb_flush();
}
}
/**
* Search the most top object which fully covers an area
* @param area_p pointer to an area
* @param obj the first object to start the searching (typically a screen)
* @return
*/
static lv_obj_t * lv_refr_get_top_obj(const lv_area_t * area_p, lv_obj_t * obj)
{
lv_obj_t * found_p = NULL;
/*If this object is fully cover the draw area check the children too */
if(_lv_area_is_in(area_p, &obj->coords, 0) && obj->hidden == 0) {
lv_design_res_t design_res = obj->design_cb ? obj->design_cb(obj, area_p,
LV_DESIGN_COVER_CHK) : LV_DESIGN_RES_NOT_COVER;
if(design_res == LV_DESIGN_RES_MASKED) return NULL;
lv_obj_t * i;
_LV_LL_READ(obj->child_ll, i) {
found_p = lv_refr_get_top_obj(area_p, i);
/*If a children is ok then break*/
if(found_p != NULL) {
break;
}
}
/*If no better children use this object*/
if(found_p == NULL) {
if(design_res == LV_DESIGN_RES_COVER) {
found_p = obj;
}
}
}
return found_p;
}
/**
* Make the refreshing from an object. Draw all its children and the youngers too.
* @param top_p pointer to an objects. Start the drawing from it.
* @param mask_p pointer to an area, the objects will be drawn only here
*/
static void lv_refr_obj_and_children(lv_obj_t * top_p, const lv_area_t * mask_p)
{
/* Normally always will be a top_obj (at least the screen)
* but in special cases (e.g. if the screen has alpha) it won't.
* In this case use the screen directly */
if(top_p == NULL) top_p = lv_disp_get_scr_act(disp_refr);
if(top_p == NULL) return; /*Shouldn't happen*/
/*Refresh the top object and its children*/
lv_refr_obj(top_p, mask_p);
/*Draw the 'younger' sibling objects because they can be on top_obj */
lv_obj_t * par;
lv_obj_t * border_p = top_p;
par = lv_obj_get_parent(top_p);
/*Do until not reach the screen*/
while(par != NULL) {
/*object before border_p has to be redrawn*/
lv_obj_t * i = _lv_ll_get_prev(&(par->child_ll), border_p);
while(i != NULL) {
/*Refresh the objects*/
lv_refr_obj(i, mask_p);
i = _lv_ll_get_prev(&(par->child_ll), i);
}
/*Call the post draw design function of the parents of the to object*/
if(par->design_cb) par->design_cb(par, mask_p, LV_DESIGN_DRAW_POST);
/*The new border will be there last parents,
*so the 'younger' brothers of parent will be refreshed*/
border_p = par;
/*Go a level deeper*/
par = lv_obj_get_parent(par);
}
}
/**
* Refresh an object an all of its children. (Called recursively)
* @param obj pointer to an object to refresh
* @param mask_ori_p pointer to an area, the objects will be drawn only here
*/
static void lv_refr_obj(lv_obj_t * obj, const lv_area_t * mask_ori_p)
{
/*Do not refresh hidden objects*/
if(obj->hidden != 0) return;
bool union_ok; /* Store the return value of area_union */
/* Truncate the original mask to the coordinates of the parent
* because the parent and its children are visible only here */
lv_area_t obj_mask;
lv_area_t obj_ext_mask;
lv_area_t obj_area;
lv_coord_t ext_size = obj->ext_draw_pad;
lv_obj_get_coords(obj, &obj_area);
obj_area.x1 -= ext_size;
obj_area.y1 -= ext_size;
obj_area.x2 += ext_size;
obj_area.y2 += ext_size;
union_ok = _lv_area_intersect(&obj_ext_mask, mask_ori_p, &obj_area);
/*Draw the parent and its children only if they ore on 'mask_parent'*/
if(union_ok != false) {
/* Redraw the object */
if(obj->design_cb) obj->design_cb(obj, &obj_ext_mask, LV_DESIGN_DRAW_MAIN);
#if MASK_AREA_DEBUG
static lv_color_t debug_color = LV_COLOR_RED;
lv_draw_rect_dsc_t draw_dsc;
lv_draw_rect_dsc_init(&draw_dsc);
draw_dsc.bg_color.full = debug_color.full;
draw_dsc.bg_opa = LV_OPA_20;
draw_dsc.border_width = 2;
draw_dsc.border_opa = LV_OPA_50;
draw_dsc.border_color.full = (debug_color.full + 0x13) * 9;
lv_draw_rect(&obj_ext_mask, &obj_ext_mask, &draw_dsc);
debug_color.full *= 17;
debug_color.full += 0xA1;
#if LV_COLOR_DEPTH == 32
debug_color.ch.alpha = 0xff;
#endif
#endif
/*Create a new 'obj_mask' without 'ext_size' because the children can't be visible there*/
lv_obj_get_coords(obj, &obj_area);
union_ok = _lv_area_intersect(&obj_mask, mask_ori_p, &obj_area);
if(union_ok != false) {
lv_area_t mask_child; /*Mask from obj and its child*/
lv_obj_t * child_p;
lv_area_t child_area;
_LV_LL_READ_BACK(obj->child_ll, child_p) {
lv_obj_get_coords(child_p, &child_area);
ext_size = child_p->ext_draw_pad;
child_area.x1 -= ext_size;
child_area.y1 -= ext_size;
child_area.x2 += ext_size;
child_area.y2 += ext_size;
/* Get the union (common parts) of original mask (from obj)
* and its child */
union_ok = _lv_area_intersect(&mask_child, &obj_mask, &child_area);
/*If the parent and the child has common area then refresh the child */
if(union_ok) {
/*Refresh the next children*/
lv_refr_obj(child_p, &mask_child);
}
}
}
/* If all the children are redrawn make 'post draw' design */
if(obj->design_cb) obj->design_cb(obj, &obj_ext_mask, LV_DESIGN_DRAW_POST);
}
}
/**
* Flush the content of the VDB
*/
static void lv_refr_vdb_flush(void)
{
lv_disp_buf_t * vdb = lv_disp_get_buf(disp_refr);
/*In double buffered mode wait until the other buffer is flushed before flushing the current
* one*/
if(lv_disp_is_double_buf(disp_refr)) {
while(vdb->flushing) {
if(disp_refr->driver.wait_cb) disp_refr->driver.wait_cb(&disp_refr->driver);
}
}
vdb->flushing = 1;
if(disp_refr->driver.buffer->last_area && disp_refr->driver.buffer->last_part) vdb->flushing_last = 1;
else vdb->flushing_last = 0;
/*Flush the rendered content to the display*/
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
if(disp->driver.flush_cb) disp->driver.flush_cb(&disp->driver, &vdb->area, vdb->buf_act);
if(vdb->buf1 && vdb->buf2) {
if(vdb->buf_act == vdb->buf1)
vdb->buf_act = vdb->buf2;
else
vdb->buf_act = vdb->buf1;
}
}

95
nodemcuv2/lv_arduino/src/src/lv_core/lv_refr.h Normal file
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/**
* @file lv_refr.h
*
*/
#ifndef LV_REFR_H
#define LV_REFR_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lv_obj.h"
#include <stdbool.h>
/*********************
* DEFINES
*********************/
#define LV_REFR_TASK_PRIO LV_TASK_PRIO_MID
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize the screen refresh subsystem
*/
void _lv_refr_init(void);
/**
* Redraw the invalidated areas now.
* Normally the redrawing is periodically executed in `lv_task_handler` but a long blocking process
* can prevent the call of `lv_task_handler`. In this case if the the GUI is updated in the process
* (e.g. progress bar) this function can be called when the screen should be updated.
* @param disp pointer to display to refresh. NULL to refresh all displays.
*/
void lv_refr_now(lv_disp_t * disp);
/**
* Invalidate an area on display to redraw it
* @param area_p pointer to area which should be invalidated (NULL: delete the invalidated areas)
* @param disp pointer to display where the area should be invalidated (NULL can be used if there is
* only one display)
*/
void _lv_inv_area(lv_disp_t * disp, const lv_area_t * area_p);
/**
* Get the display which is being refreshed
* @return the display being refreshed
*/
lv_disp_t * _lv_refr_get_disp_refreshing(void);
/**
* Set the display which is being refreshed.
* It shouldn't be used directly by the user.
* It can be used to trick the drawing functions about there is an active display.
* @param the display being refreshed
*/
void _lv_refr_set_disp_refreshing(lv_disp_t * disp);
/**
* Called periodically to handle the refreshing
* @param task pointer to the task itself
*/
void _lv_disp_refr_task(lv_task_t * task);
/**********************
* STATIC FUNCTIONS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_REFR_H*/

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nodemcuv2/lv_arduino/src/src/lv_core/lv_style.c Normal file
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nodemcuv2/lv_arduino/src/src/lv_core/lv_style.h Normal file
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/**
* @file lv_style.h
*
*/
#ifndef LV_STYLE_H
#define LV_STYLE_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include <stdbool.h>
#include "../lv_font/lv_font.h"
#include "../lv_misc/lv_color.h"
#include "../lv_misc/lv_area.h"
#include "../lv_misc/lv_anim.h"
#include "../lv_misc/lv_types.h"
#include "../lv_misc/lv_debug.h"
#include "../lv_draw/lv_draw_blend.h"
/*********************
* DEFINES
*********************/
#define LV_RADIUS_CIRCLE (0x7FFF) /**< A very big radius to always draw as circle*/
LV_EXPORT_CONST_INT(LV_RADIUS_CIRCLE);
#define LV_DEBUG_STYLE_SENTINEL_VALUE 0x2288AAEE
#define LV_DEBUG_STYLE_LIST_SENTINEL_VALUE 0x9977CCBB
#define LV_STYLE_PROP_INIT(name, group, id, attr) name = (((group << 4) + id) | ((attr) << 8))
#define LV_STYLE_ID_MASK 0x00FF
#define LV_STYLE_ATTR_NONE 0
#define LV_STYLE_ATTR_INHERIT (1 << 7)
#define _LV_STYLE_CLOSEING_PROP 0xFF
#define LV_STYLE_TRANS_NUM_MAX 6
#define LV_STYLE_PROP_ALL 0xFF
/**********************
* TYPEDEFS
**********************/
/*Border types (Use 'OR'ed values)*/
enum {
LV_BORDER_SIDE_NONE = 0x00,
LV_BORDER_SIDE_BOTTOM = 0x01,
LV_BORDER_SIDE_TOP = 0x02,
LV_BORDER_SIDE_LEFT = 0x04,
LV_BORDER_SIDE_RIGHT = 0x08,
LV_BORDER_SIDE_FULL = 0x0F,
LV_BORDER_SIDE_INTERNAL = 0x10, /**< FOR matrix-like objects (e.g. Button matrix)*/
_LV_BORDER_SIDE_LAST
};
typedef uint8_t lv_border_side_t;
enum {
LV_GRAD_DIR_NONE,
LV_GRAD_DIR_VER,
LV_GRAD_DIR_HOR,
_LV_GRAD_DIR_LAST
};
typedef uint8_t lv_grad_dir_t;
/*Text decorations (Use 'OR'ed values)*/
enum {
LV_TEXT_DECOR_NONE = 0x00,
LV_TEXT_DECOR_UNDERLINE = 0x01,
LV_TEXT_DECOR_STRIKETHROUGH = 0x02,
_LV_TEXT_DECOR_LAST
};
typedef uint8_t lv_text_decor_t;
typedef union {
struct {
uint8_t state : 7; /* To which state the property refers to*/
uint8_t inherit : 1; /*1: The property can be inherited*/
} bits;
uint8_t full;
} lv_style_attr_t;
#define LV_STYLE_ID_VALUE 0x0 /*max 9 pcs*/
#define LV_STYLE_ID_COLOR 0x9 /*max 3 pcs*/
#define LV_STYLE_ID_OPA 0xC /*max 2 pcs*/
#define LV_STYLE_ID_PTR 0xE /*max 2 pcs*/
enum {
/*Skip 0th property*/
LV_STYLE_PROP_INIT(LV_STYLE_RADIUS, 0x0, LV_STYLE_ID_VALUE + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_CLIP_CORNER, 0x0, LV_STYLE_ID_VALUE + 2, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SIZE, 0x0, LV_STYLE_ID_VALUE + 3, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_TRANSFORM_WIDTH, 0x0, LV_STYLE_ID_VALUE + 4, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_TRANSFORM_HEIGHT, 0x0, LV_STYLE_ID_VALUE + 5, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_TRANSFORM_ANGLE, 0x0, LV_STYLE_ID_VALUE + 6, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_TRANSFORM_ZOOM, 0x0, LV_STYLE_ID_VALUE + 7, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_OPA_SCALE, 0x0, LV_STYLE_ID_OPA + 0, LV_STYLE_ATTR_INHERIT),
LV_STYLE_PROP_INIT(LV_STYLE_PAD_TOP, 0x1, LV_STYLE_ID_VALUE + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_PAD_BOTTOM, 0x1, LV_STYLE_ID_VALUE + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_PAD_LEFT, 0x1, LV_STYLE_ID_VALUE + 2, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_PAD_RIGHT, 0x1, LV_STYLE_ID_VALUE + 3, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_PAD_INNER, 0x1, LV_STYLE_ID_VALUE + 4, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_MARGIN_TOP, 0x1, LV_STYLE_ID_VALUE + 5, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_MARGIN_BOTTOM, 0x1, LV_STYLE_ID_VALUE + 6, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_MARGIN_LEFT, 0x1, LV_STYLE_ID_VALUE + 7, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_MARGIN_RIGHT, 0x1, LV_STYLE_ID_VALUE + 8, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_BG_BLEND_MODE, 0x2, LV_STYLE_ID_VALUE + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_BG_MAIN_STOP, 0x2, LV_STYLE_ID_VALUE + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_BG_GRAD_STOP, 0x2, LV_STYLE_ID_VALUE + 2, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_BG_GRAD_DIR, 0x2, LV_STYLE_ID_VALUE + 3, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_BG_COLOR, 0x2, LV_STYLE_ID_COLOR + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_BG_GRAD_COLOR, 0x2, LV_STYLE_ID_COLOR + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_BG_OPA, 0x2, LV_STYLE_ID_OPA + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_BORDER_WIDTH, 0x3, LV_STYLE_ID_VALUE + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_BORDER_SIDE, 0x3, LV_STYLE_ID_VALUE + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_BORDER_BLEND_MODE, 0x3, LV_STYLE_ID_VALUE + 2, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_BORDER_POST, 0x3, LV_STYLE_ID_VALUE + 3, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_BORDER_COLOR, 0x3, LV_STYLE_ID_COLOR + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_BORDER_OPA, 0x3, LV_STYLE_ID_OPA + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_OUTLINE_WIDTH, 0x4, LV_STYLE_ID_VALUE + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_OUTLINE_PAD, 0x4, LV_STYLE_ID_VALUE + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_OUTLINE_BLEND_MODE, 0x4, LV_STYLE_ID_VALUE + 2, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_OUTLINE_COLOR, 0x4, LV_STYLE_ID_COLOR + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_OUTLINE_OPA, 0x4, LV_STYLE_ID_OPA + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SHADOW_WIDTH, 0x5, LV_STYLE_ID_VALUE + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SHADOW_OFS_X, 0x5, LV_STYLE_ID_VALUE + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SHADOW_OFS_Y, 0x5, LV_STYLE_ID_VALUE + 2, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SHADOW_SPREAD, 0x5, LV_STYLE_ID_VALUE + 3, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SHADOW_BLEND_MODE, 0x5, LV_STYLE_ID_VALUE + 4, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SHADOW_COLOR, 0x5, LV_STYLE_ID_COLOR + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SHADOW_OPA, 0x5, LV_STYLE_ID_OPA + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_PATTERN_BLEND_MODE, 0x6, LV_STYLE_ID_VALUE + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_PATTERN_REPEAT, 0x6, LV_STYLE_ID_VALUE + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_PATTERN_RECOLOR, 0x6, LV_STYLE_ID_COLOR + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_PATTERN_OPA, 0x6, LV_STYLE_ID_OPA + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_PATTERN_RECOLOR_OPA, 0x6, LV_STYLE_ID_OPA + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_PATTERN_IMAGE, 0x6, LV_STYLE_ID_PTR + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_VALUE_LETTER_SPACE, 0x7, LV_STYLE_ID_VALUE + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_VALUE_LINE_SPACE, 0x7, LV_STYLE_ID_VALUE + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_VALUE_BLEND_MODE, 0x7, LV_STYLE_ID_VALUE + 2, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_VALUE_OFS_X, 0x7, LV_STYLE_ID_VALUE + 3, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_VALUE_OFS_Y, 0x7, LV_STYLE_ID_VALUE + 4, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_VALUE_ALIGN, 0x7, LV_STYLE_ID_VALUE + 5, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_VALUE_COLOR, 0x7, LV_STYLE_ID_COLOR + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_VALUE_OPA, 0x7, LV_STYLE_ID_OPA + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_VALUE_FONT, 0x7, LV_STYLE_ID_PTR + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_VALUE_STR, 0x7, LV_STYLE_ID_PTR + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_TEXT_LETTER_SPACE, 0x8, LV_STYLE_ID_VALUE + 0, LV_STYLE_ATTR_INHERIT),
LV_STYLE_PROP_INIT(LV_STYLE_TEXT_LINE_SPACE, 0x8, LV_STYLE_ID_VALUE + 1, LV_STYLE_ATTR_INHERIT),
LV_STYLE_PROP_INIT(LV_STYLE_TEXT_DECOR, 0x8, LV_STYLE_ID_VALUE + 2, LV_STYLE_ATTR_INHERIT),
LV_STYLE_PROP_INIT(LV_STYLE_TEXT_BLEND_MODE, 0x8, LV_STYLE_ID_VALUE + 3, LV_STYLE_ATTR_INHERIT),
LV_STYLE_PROP_INIT(LV_STYLE_TEXT_COLOR, 0x8, LV_STYLE_ID_COLOR + 0, LV_STYLE_ATTR_INHERIT),
LV_STYLE_PROP_INIT(LV_STYLE_TEXT_SEL_COLOR, 0x8, LV_STYLE_ID_COLOR + 1, LV_STYLE_ATTR_INHERIT),
LV_STYLE_PROP_INIT(LV_STYLE_TEXT_OPA, 0x8, LV_STYLE_ID_OPA + 0, LV_STYLE_ATTR_INHERIT),
LV_STYLE_PROP_INIT(LV_STYLE_TEXT_FONT, 0x8, LV_STYLE_ID_PTR + 0, LV_STYLE_ATTR_INHERIT),
LV_STYLE_PROP_INIT(LV_STYLE_LINE_WIDTH, 0x9, LV_STYLE_ID_VALUE + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_LINE_BLEND_MODE, 0x9, LV_STYLE_ID_VALUE + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_LINE_DASH_WIDTH, 0x9, LV_STYLE_ID_VALUE + 2, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_LINE_DASH_GAP, 0x9, LV_STYLE_ID_VALUE + 3, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_LINE_ROUNDED, 0x9, LV_STYLE_ID_VALUE + 4, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_LINE_COLOR, 0x9, LV_STYLE_ID_COLOR + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_LINE_OPA, 0x9, LV_STYLE_ID_OPA + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_IMAGE_BLEND_MODE, 0xA, LV_STYLE_ID_VALUE + 0, LV_STYLE_ATTR_INHERIT),
LV_STYLE_PROP_INIT(LV_STYLE_IMAGE_RECOLOR, 0xA, LV_STYLE_ID_COLOR + 0, LV_STYLE_ATTR_INHERIT),
LV_STYLE_PROP_INIT(LV_STYLE_IMAGE_OPA, 0xA, LV_STYLE_ID_OPA + 0, LV_STYLE_ATTR_INHERIT),
LV_STYLE_PROP_INIT(LV_STYLE_IMAGE_RECOLOR_OPA, 0xA, LV_STYLE_ID_OPA + 1, LV_STYLE_ATTR_INHERIT),
LV_STYLE_PROP_INIT(LV_STYLE_TRANSITION_TIME, 0xB, LV_STYLE_ID_VALUE + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_TRANSITION_DELAY, 0xB, LV_STYLE_ID_VALUE + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_TRANSITION_PROP_1, 0xB, LV_STYLE_ID_VALUE + 2, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_TRANSITION_PROP_2, 0xB, LV_STYLE_ID_VALUE + 3, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_TRANSITION_PROP_3, 0xB, LV_STYLE_ID_VALUE + 4, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_TRANSITION_PROP_4, 0xB, LV_STYLE_ID_VALUE + 5, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_TRANSITION_PROP_5, 0xB, LV_STYLE_ID_VALUE + 6, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_TRANSITION_PROP_6, 0xB, LV_STYLE_ID_VALUE + 7, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_TRANSITION_PATH, 0xB, LV_STYLE_ID_PTR + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SCALE_WIDTH, 0xC, LV_STYLE_ID_VALUE + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SCALE_BORDER_WIDTH, 0xC, LV_STYLE_ID_VALUE + 1, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SCALE_END_BORDER_WIDTH, 0xC, LV_STYLE_ID_VALUE + 2, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SCALE_END_LINE_WIDTH, 0xC, LV_STYLE_ID_VALUE + 3, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SCALE_GRAD_COLOR, 0xC, LV_STYLE_ID_COLOR + 0, LV_STYLE_ATTR_NONE),
LV_STYLE_PROP_INIT(LV_STYLE_SCALE_END_COLOR, 0xC, LV_STYLE_ID_COLOR + 1, LV_STYLE_ATTR_NONE),
};
typedef uint16_t lv_style_property_t;
#define LV_STYLE_STATE_POS 8
#define LV_STYLE_STATE_MASK 0x7F00
#define LV_STYLE_INHERIT_MASK 0x8000
typedef uint16_t lv_style_state_t;
typedef struct {
uint8_t * map;
#if LV_USE_ASSERT_STYLE
uint32_t sentinel;
#endif
} lv_style_t;
typedef int16_t lv_style_int_t;
typedef struct {
lv_style_t ** style_list;
#if LV_USE_ASSERT_STYLE
uint32_t sentinel;
#endif
uint8_t style_cnt;
uint8_t has_local : 1;
uint8_t has_trans : 1;
uint8_t skip_trans : 1; /*1: Temporally skip the transition style if any*/
uint8_t ignore_trans : 1; /*1: Mark that this style list shouldn't receive transitions at all*/
} lv_style_list_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Initialize a style
* @param style pointer to a style to initialize
*/
void lv_style_init(lv_style_t * style);
/**
* Copy a style with all its properties
* @param style_dest pointer to the destination style. (Should be initialized with `lv_style_init()`)
* @param style_src pointer to the source (to copy )style
*/
void lv_style_copy(lv_style_t * style_dest, const lv_style_t * style_src);
/**
* Initialize a style list
* @param list a style list to initialize
*/
void lv_style_list_init(lv_style_list_t * list);
/**
* Copy a style list with all its styles and local style properties
* @param list_dest pointer to the destination style list. (should be initialized with `lv_style_list_init()`)
* @param list_src pointer to the source (to copy) style list.
*/
void lv_style_list_copy(lv_style_list_t * list_dest, const lv_style_list_t * list_src);
/**
* Add a style to a style list.
* Only the the style pointer will be saved so the shouldn't be a local variable.
* (It should be static, global or dynamically allocated)
* @param list pointer to a style list
* @param style pointer to a style to add
*/
void _lv_style_list_add_style(lv_style_list_t * list, lv_style_t * style);
/**
* Remove a style from a style list
* @param style_list pointer to a style list
* @param style pointer to a style to remove
*/
void _lv_style_list_remove_style(lv_style_list_t * list, lv_style_t * style);
/**
* Remove all styles added from style list, clear the local style, transition style and free all allocated memories.
* Leave `ignore_trans` flag as it is.
* @param list pointer to a style list.
*/
void _lv_style_list_reset(lv_style_list_t * style_list);
static inline lv_style_t * lv_style_list_get_style(lv_style_list_t * list, uint8_t id)
{
if(list->has_trans && list->skip_trans) id++;
if(list->style_cnt == 0 || id >= list->style_cnt) return NULL;
return list->style_list[id];
}
/**
* Clear all properties from a style and all allocated memories.
* @param style pointer to a style
*/
void lv_style_reset(lv_style_t * style);
/**
* Get the size of the properties in a style in bytes
* @param style pointer to a style
* @return size of the properties in bytes
*/
uint16_t _lv_style_get_mem_size(const lv_style_t * style);
/**
* Copy a style to an other
* @param dest pointer to the destination style
* @param src pointer to the source style
*/
void lv_style_copy(lv_style_t * dest, const lv_style_t * src);
/**
* Remove a property from a style
* @param style pointer to a style
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_BORDER_WIDTH | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @return true: the property was found and removed; false: the property wasn't found
*/
bool lv_style_remove_prop(lv_style_t * style, lv_style_property_t prop);
/**
* Set an integer typed property in a style.
* @param style pointer to a style where the property should be set
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_BORDER_WIDTH | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param value the value to set
* @note shouldn't be used directly. Use the specific property set functions instead.
* For example: `lv_style_set_border_width()`
* @note for performance reasons it's not checked if the property really has integer type
*/
void _lv_style_set_int(lv_style_t * style, lv_style_property_t prop, lv_style_int_t value);
/**
* Set a color typed property in a style.
* @param style pointer to a style where the property should be set
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_BORDER_COLOR | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param value the value to set
* @note shouldn't be used directly. Use the specific property set functions instead.
* For example: `lv_style_set_border_color()`
* @note for performance reasons it's not checked if the property really has color type
*/
void _lv_style_set_color(lv_style_t * style, lv_style_property_t prop, lv_color_t color);
/**
* Set an opacity typed property in a style.
* @param style pointer to a style where the property should be set
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_BORDER_OPA | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param value the value to set
* @note shouldn't be used directly. Use the specific property set functions instead.
* For example: `lv_style_set_border_opa()`
* @note for performance reasons it's not checked if the property really has opacity type
*/
void _lv_style_set_opa(lv_style_t * style, lv_style_property_t prop, lv_opa_t opa);
/**
* Set a pointer typed property in a style.
* @param style pointer to a style where the property should be set
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_TEXT_POINTER | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param value the value to set
* @note shouldn't be used directly. Use the specific property set functions instead.
* For example: `lv_style_set_border_width()`
* @note for performance reasons it's not checked if the property really has pointer type
*/
void _lv_style_set_ptr(lv_style_t * style, lv_style_property_t prop, const void * p);
/**
* Get an integer typed property from a style.
* @param style pointer to a style from where the property should be get
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_BORDER_WIDTH | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param res pointer to a buffer to store the result value
* @return -1: the property wasn't found in the style.
* The matching state bits of the desired state (in `prop`) and the best matching property's state
* Higher value means match in higher precedence state.
* @note shouldn't be used directly. Use the specific property get functions instead.
* For example: `lv_style_get_border_width()`
* @note for performance reasons it's not checked if the property really has integer type
*/
int16_t _lv_style_get_int(const lv_style_t * style, lv_style_property_t prop, void * res);
/**
* Get a color typed property from a style.
* @param style pointer to a style from where the property should be get
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_BORDER_COLOR | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param res pointer to a buffer to store the result value
* @return -1: the property wasn't found in the style.
* The matching state bits of the desired state (in `prop`) and the best matching property's state
* Higher value means match in higher precedence state.
* @note shouldn't be used directly. Use the specific property get functions instead.
* For example: `lv_style_get_border_color()`
* @note for performance reasons it's not checked if the property really has color type
*/
int16_t _lv_style_get_color(const lv_style_t * style, lv_style_property_t prop, void * res);
/**
* Get an opacity typed property from a style.
* @param style pointer to a style from where the property should be get
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_BORDER_OPA | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param res pointer to a buffer to store the result value
* @return -1: the property wasn't found in the style.
* The matching state bits of the desired state (in `prop`) and the best matching property's state
* Higher value means match in higher precedence state.
* @note shouldn't be used directly. Use the specific property get functions instead.
* For example: `lv_style_get_border_opa()`
* @note for performance reasons it's not checked if the property really has opacity type
*/
int16_t _lv_style_get_opa(const lv_style_t * style, lv_style_property_t prop, void * res);
/**
* Get a pointer typed property from a style.
* @param style pointer to a style from where the property should be get
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_TEXT_FONT | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param res pointer to a buffer to store the result value
* @return -1: the property wasn't found in the style.
* The matching state bits of the desired state (in `prop`) and the best matching property's state
* Higher value means match in higher precedence state.
* @note shouldn't be used directly. Use the specific property get functions instead.
* For example: `lv_style_get_text_font()`
* @note for performance reasons it's not checked if the property really has pointer type
*/
int16_t _lv_style_get_ptr(const lv_style_t * style, lv_style_property_t prop, void * res);
/**
* Get the local style of a style list
* @param list pointer to a style list where the local property should be set
* @return pointer to the local style if exists else `NULL`.
*/
lv_style_t * lv_style_list_get_local_style(lv_style_list_t * list);
/**
* Get the transition style of a style list
* @param list pointer to a style list where the local property should be set
* @return pointer to the transition style if exists else `NULL`.
*/
lv_style_t * _lv_style_list_get_transition_style(lv_style_list_t * list);
/**
* Allocate the transition style in a style list. If already exists simply return it.
* @param list pointer to a style list
* @return the transition style of a style list
*/
lv_style_t * _lv_style_list_add_trans_style(lv_style_list_t * list);
/**
* Set a local integer typed property in a style list.
* @param list pointer to a style list where the local property should be set
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_BORDER_WIDTH | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param value the value to set
* @note for performance reasons it's not checked if the property really has integer type
*/
void _lv_style_list_set_local_int(lv_style_list_t * list, lv_style_property_t prop, lv_style_int_t value);
/**
* Set a local color typed property in a style list.
* @param list pointer to a style list where the local property should be set
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_BORDER_COLOR | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param value the value to set
* @note for performance reasons it's not checked if the property really has color type
*/
void _lv_style_list_set_local_color(lv_style_list_t * list, lv_style_property_t prop, lv_color_t value);
/**
* Set a local opacity typed property in a style list.
* @param list pointer to a style list where the local property should be set
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_BORDER_OPA | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param value the value to set
* @note for performance reasons it's not checked if the property really has opacity type
*/
void _lv_style_list_set_local_opa(lv_style_list_t * list, lv_style_property_t prop, lv_opa_t value);
/**
* Set a local pointer typed property in a style list.
* @param list pointer to a style list where the local property should be set
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_TEXT_FONT | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param value the value to set
* @note for performance reasons it's not checked if the property really has pointer type
*/
void _lv_style_list_set_local_ptr(lv_style_list_t * list, lv_style_property_t prop, const void * value);
/**
* Get an integer typed property from a style list.
* It will return the property which match best with given state.
* @param list pointer to a style list from where the property should be get
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_BORDER_WIDTH | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param res pointer to a buffer to store the result
* @return LV_RES_OK: there was a matching property in the list
* LV_RES_INV: there was NO matching property in the list
* @note for performance reasons it's not checked if the property really has integer type
*/
lv_res_t _lv_style_list_get_int(lv_style_list_t * list, lv_style_property_t prop, lv_style_int_t * res);
/**
* Get a color typed property from a style list.
* It will return the property which match best with given state.
* @param list pointer to a style list from where the property should be get
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_BORDER_COLOR | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param res pointer to a buffer to store the result
* @return LV_RES_OK: there was a matching property in the list
* LV_RES_INV: there was NO matching property in the list
* @note for performance reasons it's not checked if the property really has color type
*/
lv_res_t _lv_style_list_get_color(lv_style_list_t * list, lv_style_property_t prop, lv_color_t * res);
/**
* Get an opacity typed property from a style list.
* It will return the property which match best with given state.
* @param list pointer to a style list from where the property should be get
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_BORDER_OPA | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param res pointer to a buffer to store the result
* @return LV_RES_OK: there was a matching property in the list
* LV_RES_INV: there was NO matching property in the list
* @note for performance reasons it's not checked if the property really has opacity type
*/
lv_res_t _lv_style_list_get_opa(lv_style_list_t * list, lv_style_property_t prop, lv_opa_t * res);
/**
* Get a pointer typed property from a style list.
* It will return the property which match best with given state.
* @param list pointer to a style list from where the property should be get
* @param prop a style property ORed with a state.
* E.g. `LV_STYLE_TEXT_FONT | (LV_STATE_PRESSED << LV_STYLE_STATE_POS)`
* @param res pointer to a buffer to store the result
* @return LV_RES_OK: there was a matching property in the list
* LV_RES_INV: there was NO matching property in the list
* @note for performance reasons it's not checked if the property really has pointer type
*/
lv_res_t _lv_style_list_get_ptr(lv_style_list_t * list, lv_style_property_t prop, const void ** res);
/**
* Check whether a style is valid (initialized correctly)
* @param style pointer to a style
* @return true: valid
*/
bool lv_debug_check_style(const lv_style_t * style);
/**
* Check whether a style list is valid (initialized correctly)
* @param style pointer to a style
* @return true: valid
*/
bool lv_debug_check_style_list(const lv_style_list_t * list);
/*************************
* GLOBAL VARIABLES
*************************/
/**********************
* MACROS
**********************/
/**
* Create and initialize a `static` style
* Example:
* LV_STYLE_CREATE(my_style, &style_to_copy);
* is equivalent to
* static lv_style_t my_style;
* lv_style_init(&my_style);
* lv_style_copy(&my_style, &style_to_copy);
*/
#define LV_STYLE_CREATE(name, copy_p) static lv_style_t name; lv_style_init(&name); lv_style_copy(&name, copy);
#if LV_USE_DEBUG
# ifndef LV_DEBUG_IS_STYLE
# define LV_DEBUG_IS_STYLE(style_p) (lv_debug_check_style(style_p))
# endif
# ifndef LV_DEBUG_IS_STYLE_LIST
# define LV_DEBUG_IS_STYLE_LIST(list_p) (lv_debug_check_style_list(list_p))
# endif
# if LV_USE_ASSERT_STYLE
# ifndef LV_ASSERT_STYLE
# define LV_ASSERT_STYLE(style_p) LV_DEBUG_ASSERT(LV_DEBUG_IS_STYLE(style_p), "Invalid style", style_p);
# endif
# ifndef LV_ASSERT_STYLE_LIST
# define LV_ASSERT_STYLE_LIST(list_p) LV_DEBUG_ASSERT(LV_DEBUG_IS_STYLE_LIST(list_p), "Invalid style list", list_p);
# endif
# else
# define LV_ASSERT_STYLE(style_p) true
# define LV_ASSERT_STYLE_LIST(list_p) true
# endif
#else
# define LV_ASSERT_STYLE(p) true
# define LV_ASSERT_STYLE_LIST(p) true
#endif
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_STYLE_H*/

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@@ -0,0 +1,59 @@
/**
* @file lv_draw.h
*
*/
#ifndef LV_DRAW_H
#define LV_DRAW_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include "../lv_core/lv_style.h"
#include "../lv_misc/lv_txt.h"
#include "lv_img_decoder.h"
#include "lv_draw_rect.h"
#include "lv_draw_label.h"
#include "lv_draw_img.h"
#include "lv_draw_line.h"
#include "lv_draw_triangle.h"
#include "lv_draw_arc.h"
#include "lv_draw_blend.h"
#include "lv_draw_mask.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* GLOBAL VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* POST INCLUDES
*********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_DRAW_H*/

16
nodemcuv2/lv_arduino/src/src/lv_draw/lv_draw.mk Normal file
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CSRCS += lv_draw_mask.c
CSRCS += lv_draw_blend.c
CSRCS += lv_draw_rect.c
CSRCS += lv_draw_label.c
CSRCS += lv_draw_line.c
CSRCS += lv_draw_img.c
CSRCS += lv_draw_arc.c
CSRCS += lv_draw_triangle.c
CSRCS += lv_img_decoder.c
CSRCS += lv_img_cache.c
CSRCS += lv_img_buf.c
DEPPATH += --dep-path $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_draw
VPATH += :$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_draw
CFLAGS += "-I$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_draw"

434
nodemcuv2/lv_arduino/src/src/lv_draw/lv_draw_arc.c Normal file
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@@ -0,0 +1,434 @@
/**
* @file lv_draw_arc.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_draw_arc.h"
#include "lv_draw_rect.h"
#include "lv_draw_mask.h"
#include "../lv_misc/lv_math.h"
/*********************
* DEFINES
*********************/
#define SPLIT_RADIUS_LIMIT 10 /*With radius greater then this the arc will drawn in quarters. A quarter is drawn only if there is arc in it */
#define SPLIT_ANGLE_GAP_LIMIT 60 /*With small gaps in the arc don't bother with splitting because there is nothing to skip.*/
/**********************
* TYPEDEFS
**********************/
typedef struct {
lv_coord_t center_x;
lv_coord_t center_y;
lv_coord_t radius;
uint16_t start_angle;
uint16_t end_angle;
uint16_t start_quarter;
uint16_t end_quarter;
lv_coord_t width;
lv_draw_rect_dsc_t * draw_dsc;
const lv_area_t * draw_area;
const lv_area_t * clip_area;
} quarter_draw_dsc_t;
/**********************
* STATIC PROTOTYPES
**********************/
static void draw_quarter_0(quarter_draw_dsc_t * q);
static void draw_quarter_1(quarter_draw_dsc_t * q);
static void draw_quarter_2(quarter_draw_dsc_t * q);
static void draw_quarter_3(quarter_draw_dsc_t * q);
static void get_rounded_area(int16_t angle, lv_coord_t radius, uint8_t tickness, lv_area_t * res_area);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Draw an arc. (Can draw pie too with great thickness.)
* @param center_x the x coordinate of the center of the arc
* @param center_y the y coordinate of the center of the arc
* @param radius the radius of the arc
* @param mask the arc will be drawn only in this mask
* @param start_angle the start angle of the arc (0 deg on the bottom, 90 deg on the right)
* @param end_angle the end angle of the arc
* @param style style of the arc (`body.thickness`, `body.main_color`, `body.opa` is used)
* @param opa_scale scale down all opacities by the factor
*/
void lv_draw_arc(lv_coord_t center_x, lv_coord_t center_y, uint16_t radius, uint16_t start_angle, uint16_t end_angle,
const lv_area_t * clip_area, lv_draw_line_dsc_t * dsc)
{
if(dsc->opa <= LV_OPA_MIN) return;
if(dsc->width == 0) return;
if(start_angle == end_angle) return;
if(dsc->width > radius) dsc->width = radius;
lv_draw_rect_dsc_t cir_dsc;
lv_draw_rect_dsc_init(&cir_dsc);
cir_dsc.radius = LV_RADIUS_CIRCLE;
cir_dsc.bg_opa = LV_OPA_TRANSP;
cir_dsc.border_opa = dsc->opa;
cir_dsc.border_color = dsc->color;
cir_dsc.border_width = dsc->width;
cir_dsc.border_blend_mode = dsc->blend_mode;
lv_area_t area;
area.x1 = center_x - radius;
area.y1 = center_y - radius;
area.x2 = center_x + radius - 1; /*-1 because the center already belongs to the left/bottom part*/
area.y2 = center_y + radius - 1;
/*Draw a full ring*/
if(start_angle + 360 == end_angle || start_angle == end_angle + 360) {
lv_draw_rect(&area, clip_area, &cir_dsc);
return;
}
if(start_angle >= 360) start_angle -= 360;
if(end_angle >= 360) end_angle -= 360;
lv_draw_mask_angle_param_t mask_angle_param;
lv_draw_mask_angle_init(&mask_angle_param, center_x, center_y, start_angle, end_angle);
int16_t mask_angle_id = lv_draw_mask_add(&mask_angle_param, NULL);
int32_t angle_gap;
if(end_angle > start_angle) {
angle_gap = 360 - (end_angle - start_angle);
}
else {
angle_gap = start_angle - end_angle;
}
if(angle_gap > SPLIT_ANGLE_GAP_LIMIT && radius > SPLIT_RADIUS_LIMIT) {
/*Handle each quarter individually and skip which is empty*/
quarter_draw_dsc_t q_dsc;
q_dsc.center_x = center_x;
q_dsc.center_y = center_y;
q_dsc.radius = radius;
q_dsc.start_angle = start_angle;
q_dsc.end_angle = end_angle;
q_dsc.start_quarter = (start_angle / 90) & 0x3;
q_dsc.end_quarter = (end_angle / 90) & 0x3;
q_dsc.width = dsc->width;
q_dsc.draw_dsc = &cir_dsc;
q_dsc.draw_area = &area;
q_dsc.clip_area = clip_area;
draw_quarter_0(&q_dsc);
draw_quarter_1(&q_dsc);
draw_quarter_2(&q_dsc);
draw_quarter_3(&q_dsc);
}
else {
lv_draw_rect(&area, clip_area, &cir_dsc);
}
lv_draw_mask_remove_id(mask_angle_id);
if(dsc->round_start || dsc->round_end) {
cir_dsc.bg_color = dsc->color;
cir_dsc.bg_opa = dsc->opa;
cir_dsc.bg_blend_mode = dsc->blend_mode;
cir_dsc.border_width = 0;
lv_area_t round_area;
if(dsc->round_start) {
get_rounded_area(start_angle, radius, dsc->width, &round_area);
round_area.x1 += center_x;
round_area.x2 += center_x;
round_area.y1 += center_y;
round_area.y2 += center_y;
lv_draw_rect(&round_area, clip_area, &cir_dsc);
}
if(dsc->round_end) {
get_rounded_area(end_angle, radius, dsc->width, &round_area);
round_area.x1 += center_x;
round_area.x2 += center_x;
round_area.y1 += center_y;
round_area.y2 += center_y;
lv_draw_rect(&round_area, clip_area, &cir_dsc);
}
}
}
/**********************
* STATIC FUNCTIONS
**********************/
static void draw_quarter_0(quarter_draw_dsc_t * q)
{
lv_area_t quarter_area;
if(q->start_quarter == 0 && q->end_quarter == 0 && q->start_angle < q->end_angle) {
/*Small arc here*/
quarter_area.y1 = q->center_y + ((_lv_trigo_sin(q->start_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
quarter_area.x2 = q->center_x + ((_lv_trigo_sin(q->start_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
quarter_area.y2 = q->center_y + ((_lv_trigo_sin(q->end_angle) * q->radius) >> LV_TRIGO_SHIFT);
quarter_area.x1 = q->center_x + ((_lv_trigo_sin(q->end_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
else if(q->start_quarter == 0 || q->end_quarter == 0) {
/*Start and/or end arcs here*/
if(q->start_quarter == 0) {
quarter_area.x1 = q->center_x;
quarter_area.y2 = q->center_y + q->radius;
quarter_area.y1 = q->center_y + ((_lv_trigo_sin(q->start_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
quarter_area.x2 = q->center_x + ((_lv_trigo_sin(q->start_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
if(q->end_quarter == 0) {
quarter_area.x2 = q->center_x + q->radius;
quarter_area.y1 = q->center_y;
quarter_area.y2 = q->center_y + ((_lv_trigo_sin(q->end_angle) * q->radius) >> LV_TRIGO_SHIFT);
quarter_area.x1 = q->center_x + ((_lv_trigo_sin(q->end_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
}
else if((q->start_quarter == q->end_quarter && q->start_quarter != 0 && q->end_angle < q->start_angle) ||
(q->start_quarter == 2 && q->end_quarter == 1) ||
(q->start_quarter == 3 && q->end_quarter == 2) ||
(q->start_quarter == 3 && q->end_quarter == 1)) {
/*Arc crosses here*/
quarter_area.x1 = q->center_x;
quarter_area.y1 = q->center_y;
quarter_area.x2 = q->center_x + q->radius;
quarter_area.y2 = q->center_y + q->radius;
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
}
static void draw_quarter_1(quarter_draw_dsc_t * q)
{
lv_area_t quarter_area;
if(q->start_quarter == 1 && q->end_quarter == 1 && q->start_angle < q->end_angle) {
/*Small arc here*/
quarter_area.y2 = q->center_y + ((_lv_trigo_sin(q->start_angle) * (q->radius)) >> LV_TRIGO_SHIFT);
quarter_area.x2 = q->center_x + ((_lv_trigo_sin(q->start_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
quarter_area.y1 = q->center_y + ((_lv_trigo_sin(q->end_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
quarter_area.x1 = q->center_x + ((_lv_trigo_sin(q->end_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
else if(q->start_quarter == 1 || q->end_quarter == 1) {
/*Start and/or end arcs here*/
if(q->start_quarter == 1) {
quarter_area.x1 = q->center_x - q->radius;
quarter_area.y1 = q->center_y;
quarter_area.y2 = q->center_y + ((_lv_trigo_sin(q->start_angle) * (q->radius)) >> LV_TRIGO_SHIFT);
quarter_area.x2 = q->center_x + ((_lv_trigo_sin(q->start_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
if(q->end_quarter == 1) {
quarter_area.x2 = q->center_x - 1;
quarter_area.y2 = q->center_y + q->radius;
quarter_area.y1 = q->center_y + ((_lv_trigo_sin(q->end_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
quarter_area.x1 = q->center_x + ((_lv_trigo_sin(q->end_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
}
else if((q->start_quarter == q->end_quarter && q->start_quarter != 1 && q->end_angle < q->start_angle) ||
(q->start_quarter == 0 && q->end_quarter == 2) ||
(q->start_quarter == 0 && q->end_quarter == 3) ||
(q->start_quarter == 3 && q->end_quarter == 2)) {
/*Arc crosses here*/
quarter_area.x1 = q->center_x - q->radius;
quarter_area.y1 = q->center_y;
quarter_area.x2 = q->center_x - 1;
quarter_area.y2 = q->center_y + q->radius;
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
}
static void draw_quarter_2(quarter_draw_dsc_t * q)
{
lv_area_t quarter_area;
if(q->start_quarter == 2 && q->end_quarter == 2 && q->start_angle < q->end_angle) {
/*Small arc here*/
quarter_area.x1 = q->center_x + ((_lv_trigo_sin(q->start_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
quarter_area.y2 = q->center_y + ((_lv_trigo_sin(q->start_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
quarter_area.y1 = q->center_y + ((_lv_trigo_sin(q->end_angle) * q->radius) >> LV_TRIGO_SHIFT);
quarter_area.x2 = q->center_x + ((_lv_trigo_sin(q->end_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
else if(q->start_quarter == 2 || q->end_quarter == 2) {
/*Start and/or end arcs here*/
if(q->start_quarter == 2) {
quarter_area.x2 = q->center_x - 1;
quarter_area.y1 = q->center_y - q->radius;
quarter_area.x1 = q->center_x + ((_lv_trigo_sin(q->start_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
quarter_area.y2 = q->center_y + ((_lv_trigo_sin(q->start_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
if(q->end_quarter == 2) {
quarter_area.x1 = q->center_x - q->radius;
quarter_area.y2 = q->center_y - 1;
quarter_area.x2 = q->center_x + ((_lv_trigo_sin(q->end_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
quarter_area.y1 = q->center_y + ((_lv_trigo_sin(q->end_angle) * (q->radius)) >> LV_TRIGO_SHIFT);
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
}
else if((q->start_quarter == q->end_quarter && q->start_quarter != 2 && q->end_angle < q->start_angle) ||
(q->start_quarter == 0 && q->end_quarter == 3) ||
(q->start_quarter == 1 && q->end_quarter == 3) ||
(q->start_quarter == 1 && q->end_quarter == 0)) {
/*Arc crosses here*/
quarter_area.x1 = q->center_x - q->radius;
quarter_area.y1 = q->center_y - q->radius;
quarter_area.x2 = q->center_x - 1;
quarter_area.y2 = q->center_y - 1;
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
}
static void draw_quarter_3(quarter_draw_dsc_t * q)
{
lv_area_t quarter_area;
if(q->start_quarter == 3 && q->end_quarter == 3 && q->start_angle < q->end_angle) {
/*Small arc here*/
quarter_area.x1 = q->center_x + ((_lv_trigo_sin(q->start_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
quarter_area.y1 = q->center_y + ((_lv_trigo_sin(q->start_angle) * (q->radius)) >> LV_TRIGO_SHIFT);
quarter_area.x2 = q->center_x + ((_lv_trigo_sin(q->end_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
quarter_area.y2 = q->center_y + ((_lv_trigo_sin(q->end_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
else if(q->start_quarter == 3 || q->end_quarter == 3) {
/*Start and/or end arcs here*/
if(q->start_quarter == 3) {
quarter_area.x2 = q->center_x + q->radius;
quarter_area.y2 = q->center_y - 1;
quarter_area.x1 = q->center_x + ((_lv_trigo_sin(q->start_angle + 90) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
quarter_area.y1 = q->center_y + ((_lv_trigo_sin(q->start_angle) * (q->radius)) >> LV_TRIGO_SHIFT);
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
if(q->end_quarter == 3) {
quarter_area.x1 = q->center_x;
quarter_area.y1 = q->center_y - q->radius;
quarter_area.x2 = q->center_x + ((_lv_trigo_sin(q->end_angle + 90) * (q->radius)) >> LV_TRIGO_SHIFT);
quarter_area.y2 = q->center_y + ((_lv_trigo_sin(q->end_angle) * (q->radius - q->width)) >> LV_TRIGO_SHIFT);
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
}
else if((q->start_quarter == q->end_quarter && q->start_quarter != 3 && q->end_angle < q->start_angle) ||
(q->start_quarter == 2 && q->end_quarter == 0) ||
(q->start_quarter == 1 && q->end_quarter == 0) ||
(q->start_quarter == 2 && q->end_quarter == 1)) {
/*Arc crosses here*/
quarter_area.x1 = q->center_x;
quarter_area.y1 = q->center_y - q->radius;
quarter_area.x2 = q->center_x + q->radius;
quarter_area.y2 = q->center_y - 1;
bool ok = _lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->draw_dsc);
}
}
static void get_rounded_area(int16_t angle, lv_coord_t radius, uint8_t tickness, lv_area_t * res_area)
{
const uint8_t ps = 8;
const uint8_t pa = 127;
int32_t thick_half = tickness / 2;
uint8_t thick_corr = (tickness & 0x01) ? 0 : 1;
int32_t rx_corr;
int32_t ry_corr;
if(angle > 90 && angle < 270) rx_corr = 0;
else rx_corr = 0;
if(angle > 0 && angle < 180) ry_corr = 0;
else ry_corr = 0;
int32_t cir_x;
int32_t cir_y;
cir_x = ((radius - rx_corr - thick_half) * _lv_trigo_sin(90 - angle)) >> (LV_TRIGO_SHIFT - ps);
cir_y = ((radius - ry_corr - thick_half) * _lv_trigo_sin(angle)) >> (LV_TRIGO_SHIFT - ps);
/* Actually the center of the pixel need to be calculated so apply 1/2 px offset*/
if(cir_x > 0) {
cir_x = (cir_x - pa) >> ps;
res_area->x1 = cir_x - thick_half + thick_corr;
res_area->x2 = cir_x + thick_half;
}
else {
cir_x = (cir_x + pa) >> ps;
res_area->x1 = cir_x - thick_half;
res_area->x2 = cir_x + thick_half - thick_corr;
}
if(cir_y > 0) {
cir_y = (cir_y - pa) >> ps;
res_area->y1 = cir_y - thick_half + thick_corr;
res_area->y2 = cir_y + thick_half;
}
else {
cir_y = (cir_y + pa) >> ps;
res_area->y1 = cir_y - thick_half;
res_area->y2 = cir_y + thick_half - thick_corr;
}
}

52
nodemcuv2/lv_arduino/src/src/lv_draw/lv_draw_arc.h Normal file
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/**
* @file lv_draw_arc.h
*
*/
#ifndef LV_DRAW_ARC_H
#define LV_DRAW_ARC_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lv_draw_line.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Draw an arc. (Can draw pie too with great thickness.)
* @param center_x the x coordinate of the center of the arc
* @param center_y the y coordinate of the center of the arc
* @param radius the radius of the arc
* @param mask the arc will be drawn only in this mask
* @param start_angle the start angle of the arc (0 deg on the bottom, 90 deg on the right)
* @param end_angle the end angle of the arc
* @param style style of the arc (`body.thickness`, `body.main_color`, `body.opa` is used)
* @param opa_scale scale down all opacities by the factor
*/
void lv_draw_arc(lv_coord_t center_x, lv_coord_t center_y, uint16_t radius, uint16_t start_angle, uint16_t end_angle,
const lv_area_t * clip_area, lv_draw_line_dsc_t * dsc);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_DRAW_ARC*/

996
nodemcuv2/lv_arduino/src/src/lv_draw/lv_draw_blend.c Normal file
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/**
* @file lv_draw_blend.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_draw_blend.h"
#include "lv_img_decoder.h"
#include "../lv_misc/lv_math.h"
#include "../lv_hal/lv_hal_disp.h"
#include "../lv_core/lv_refr.h"
#include "../lv_gpu/lv_gpu_stm32_dma2d.h"
/*********************
* DEFINES
*********************/
#define GPU_SIZE_LIMIT 240
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void fill_set_px(const lv_area_t * disp_area, lv_color_t * disp_buf, const lv_area_t * draw_area,
lv_color_t color, lv_opa_t opa,
const lv_opa_t * mask, lv_draw_mask_res_t mask_res);
LV_ATTRIBUTE_FAST_MEM static void fill_normal(const lv_area_t * disp_area, lv_color_t * disp_buf,
const lv_area_t * draw_area,
lv_color_t color, lv_opa_t opa,
const lv_opa_t * mask, lv_draw_mask_res_t mask_res);
static void fill_blended(const lv_area_t * disp_area, lv_color_t * disp_buf, const lv_area_t * draw_area,
lv_color_t color, lv_opa_t opa,
const lv_opa_t * mask, lv_draw_mask_res_t mask_res, lv_blend_mode_t mode);
static void map_set_px(const lv_area_t * disp_area, lv_color_t * disp_buf, const lv_area_t * draw_area,
const lv_area_t * map_area, const lv_color_t * map_buf, lv_opa_t opa,
const lv_opa_t * mask, lv_draw_mask_res_t mask_res);
LV_ATTRIBUTE_FAST_MEM static void map_normal(const lv_area_t * disp_area, lv_color_t * disp_buf,
const lv_area_t * draw_area,
const lv_area_t * map_area, const lv_color_t * map_buf, lv_opa_t opa,
const lv_opa_t * mask, lv_draw_mask_res_t mask_res);
static void map_blended(const lv_area_t * disp_area, lv_color_t * disp_buf, const lv_area_t * draw_area,
const lv_area_t * map_area, const lv_color_t * map_buf, lv_opa_t opa,
const lv_opa_t * mask, lv_draw_mask_res_t mask_res, lv_blend_mode_t mode);
static inline lv_color_t color_blend_true_color_additive(lv_color_t fg, lv_color_t bg, lv_opa_t opa);
static inline lv_color_t color_blend_true_color_subtractive(lv_color_t fg, lv_color_t bg, lv_opa_t opa);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
#define FILL_NORMAL_MASK_PX(out_x, color) \
if(*mask_tmp_x) { \
if(*mask_tmp_x == LV_OPA_COVER) disp_buf_first[out_x] = color; \
else disp_buf_first[out_x] = lv_color_mix(color, disp_buf_first[out_x], *mask_tmp_x); \
} \
mask_tmp_x++;
#define FILL_NORMAL_MASK_PX_SCR_TRANSP(out_x, color) \
if(*mask_tmp_x) { \
if(*mask_tmp_x == LV_OPA_COVER) disp_buf_first[out_x] = color; \
else if(disp->driver.screen_transp) lv_color_mix_with_alpha(disp_buf_first[out_x], disp_buf_first[out_x].ch.alpha, \
color, *mask_tmp_x, &disp_buf_first[out_x], &disp_buf_first[out_x].ch.alpha); \
else disp_buf_first[out_x] = lv_color_mix(color, disp_buf_first[out_x], *mask_tmp_x); \
} \
mask_tmp_x++;
#define MAP_NORMAL_MASK_PX(x) \
if(*mask_tmp_x) { \
if(*mask_tmp_x == LV_OPA_COVER) disp_buf_first[x] = map_buf_first[x]; \
else disp_buf_first[x] = lv_color_mix(map_buf_first[x], disp_buf_first[x], *mask_tmp_x); \
} \
mask_tmp_x++;
#define MAP_NORMAL_MASK_PX_SCR_TRANSP(x) \
if(*mask_tmp_x) { \
if(*mask_tmp_x == LV_OPA_COVER) disp_buf_first[x] = map_buf_first[x]; \
else if(disp->driver.screen_transp) lv_color_mix_with_alpha(disp_buf_first[x], disp_buf_first[x].ch.alpha, \
map_buf_first[x], *mask_tmp_x, &disp_buf_first[x], &disp_buf_first[x].ch.alpha); \
else disp_buf_first[x] = lv_color_mix(map_buf_first[x], disp_buf_first[x], *mask_tmp_x); \
} \
mask_tmp_x++;
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Fill and area in the display buffer.
* @param clip_area clip the fill to this area (absolute coordinates)
* @param fill_area fill this area (absolute coordinates) (should be clipped)
* @param color fill color
* @param mask a mask to apply on the fill (uint8_t array with 0x00..0xff values).
* Relative to fill area but its width is truncated to clip area.
* @param mask_res LV_MASK_RES_COVER: the mask has only 0xff values (no mask),
* LV_MASK_RES_TRANSP: the mask has only 0x00 values (full transparent),
* LV_MASK_RES_CHANGED: the mask has mixed values
* @param opa overall opacity in 0x00..0xff range
* @param mode blend mode from `lv_blend_mode_t`
*/
LV_ATTRIBUTE_FAST_MEM void _lv_blend_fill(const lv_area_t * clip_area, const lv_area_t * fill_area,
lv_color_t color, lv_opa_t * mask, lv_draw_mask_res_t mask_res, lv_opa_t opa,
lv_blend_mode_t mode)
{
/*Do not draw transparent things*/
if(opa < LV_OPA_MIN) return;
if(mask_res == LV_DRAW_MASK_RES_TRANSP) return;
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
lv_disp_buf_t * vdb = lv_disp_get_buf(disp);
const lv_area_t * disp_area = &vdb->area;
lv_color_t * disp_buf = vdb->buf_act;
/* Get clipped fill area which is the real draw area.
* It is always the same or inside `fill_area` */
lv_area_t draw_area;
bool is_common;
is_common = _lv_area_intersect(&draw_area, clip_area, fill_area);
if(!is_common) return;
/* Now `draw_area` has absolute coordinates.
* Make it relative to `disp_area` to simplify draw to `disp_buf`*/
draw_area.x1 -= disp_area->x1;
draw_area.y1 -= disp_area->y1;
draw_area.x2 -= disp_area->x1;
draw_area.y2 -= disp_area->y1;
/*Round the values in the mask if anti-aliasing is disabled*/
#if LV_ANTIALIAS
if(mask && disp->driver.antialiasing == 0)
#else
if(mask)
#endif
{
int32_t mask_w = lv_area_get_width(&draw_area);
int32_t i;
for(i = 0; i < mask_w; i++) mask[i] = mask[i] > 128 ? LV_OPA_COVER : LV_OPA_TRANSP;
}
if(disp->driver.set_px_cb) {
fill_set_px(disp_area, disp_buf, &draw_area, color, opa, mask, mask_res);
}
else if(mode == LV_BLEND_MODE_NORMAL) {
fill_normal(disp_area, disp_buf, &draw_area, color, opa, mask, mask_res);
}
else {
fill_blended(disp_area, disp_buf, &draw_area, color, opa, mask, mask_res, mode);
}
}
/**
* Copy a map (image) to a display buffer.
* @param clip_area clip the map to this area (absolute coordinates)
* @param map_area area of the image (absolute coordinates)
* @param map_buf a pixels of the map (image)
* @param mask a mask to apply on every pixel (uint8_t array with 0x00..0xff values).
* Relative to map area but its width is truncated to clip area.
* @param mask_res LV_MASK_RES_COVER: the mask has only 0xff values (no mask),
* LV_MASK_RES_TRANSP: the mask has only 0x00 values (full transparent),
* LV_MASK_RES_CHANGED: the mask has mixed values
* @param opa overall opacity in 0x00..0xff range
* @param mode blend mode from `lv_blend_mode_t`
*/
LV_ATTRIBUTE_FAST_MEM void _lv_blend_map(const lv_area_t * clip_area, const lv_area_t * map_area,
const lv_color_t * map_buf,
lv_opa_t * mask, lv_draw_mask_res_t mask_res,
lv_opa_t opa, lv_blend_mode_t mode)
{
/*Do not draw transparent things*/
if(opa < LV_OPA_MIN) return;
if(mask_res == LV_DRAW_MASK_RES_TRANSP) return;
/* Get clipped fill area which is the real draw area.
* It is always the same or inside `fill_area` */
lv_area_t draw_area;
bool is_common;
is_common = _lv_area_intersect(&draw_area, clip_area, map_area);
if(!is_common) return;
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
lv_disp_buf_t * vdb = lv_disp_get_buf(disp);
const lv_area_t * disp_area = &vdb->area;
lv_color_t * disp_buf = vdb->buf_act;
/* Now `draw_area` has absolute coordinates.
* Make it relative to `disp_area` to simplify draw to `disp_buf`*/
draw_area.x1 -= disp_area->x1;
draw_area.y1 -= disp_area->y1;
draw_area.x2 -= disp_area->x1;
draw_area.y2 -= disp_area->y1;
/*Round the values in the mask if anti-aliasing is disabled*/
#if LV_ANTIALIAS
if(mask && disp->driver.antialiasing == 0)
#else
if(mask)
#endif
{
int32_t mask_w = lv_area_get_width(&draw_area);
int32_t i;
for(i = 0; i < mask_w; i++) mask[i] = mask[i] > 128 ? LV_OPA_COVER : LV_OPA_TRANSP;
}
if(disp->driver.set_px_cb) {
map_set_px(disp_area, disp_buf, &draw_area, map_area, map_buf, opa, mask, mask_res);
}
else if(mode == LV_BLEND_MODE_NORMAL) {
map_normal(disp_area, disp_buf, &draw_area, map_area, map_buf, opa, mask, mask_res);
}
else {
map_blended(disp_area, disp_buf, &draw_area, map_area, map_buf, opa, mask, mask_res, mode);
}
}
/**********************
* STATIC FUNCTIONS
**********************/
static void fill_set_px(const lv_area_t * disp_area, lv_color_t * disp_buf, const lv_area_t * draw_area,
lv_color_t color, lv_opa_t opa,
const lv_opa_t * mask, lv_draw_mask_res_t mask_res)
{
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
/*Get the width of the `disp_area` it will be used to go to the next line*/
int32_t disp_w = lv_area_get_width(disp_area);
int32_t x;
int32_t y;
if(mask_res == LV_DRAW_MASK_RES_FULL_COVER) {
for(y = draw_area->y1; y <= draw_area->y2; y++) {
for(x = draw_area->x1; x <= draw_area->x2; x++) {
disp->driver.set_px_cb(&disp->driver, (void *)disp_buf, disp_w, x, y, color, opa);
}
}
}
else {
/* The mask is relative to the clipped area.
* In the cycles below mask will be indexed from `draw_area.x1`
* but it corresponds to zero index. So prepare `mask_tmp` accordingly. */
const lv_opa_t * mask_tmp = mask - draw_area->x1;
/*Get the width of the `draw_area` it will be used to go to the next line of the mask*/
int32_t draw_area_w = lv_area_get_width(draw_area);
for(y = draw_area->y1; y <= draw_area->y2; y++) {
for(x = draw_area->x1; x <= draw_area->x2; x++) {
if(mask_tmp[x]) {
disp->driver.set_px_cb(&disp->driver, (void *)disp_buf, disp_w, x, y, color,
(uint32_t)((uint32_t)opa * mask_tmp[x]) >> 8);
}
}
mask_tmp += draw_area_w;
}
}
}
/**
* Fill an area with a color
* @param disp_area the current display area (destination area)
* @param disp_buf destination buffer
* @param draw_area fill this area (relative to `disp_area`)
* @param color fill color
* @param opa overall opacity in 0x00..0xff range
* @param mask a mask to apply on every pixel (uint8_t array with 0x00..0xff values).
* It fits into draw_area.
* @param mask_res LV_MASK_RES_COVER: the mask has only 0xff values (no mask),
* LV_MASK_RES_TRANSP: the mask has only 0x00 values (full transparent),
* LV_MASK_RES_CHANGED: the mask has mixed values
*/
LV_ATTRIBUTE_FAST_MEM static void fill_normal(const lv_area_t * disp_area, lv_color_t * disp_buf,
const lv_area_t * draw_area,
lv_color_t color, lv_opa_t opa,
const lv_opa_t * mask, lv_draw_mask_res_t mask_res)
{
#if LV_USE_GPU || LV_COLOR_SCREEN_TRANSP
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
#endif
/*Get the width of the `disp_area` it will be used to go to the next line*/
int32_t disp_w = lv_area_get_width(disp_area);
int32_t draw_area_w = lv_area_get_width(draw_area);
int32_t draw_area_h = lv_area_get_height(draw_area);
/*Create a temp. disp_buf which always point to the first pixel of the destination area*/
lv_color_t * disp_buf_first = disp_buf + disp_w * draw_area->y1 + draw_area->x1;
int32_t x;
int32_t y;
/*Simple fill (maybe with opacity), no masking*/
if(mask_res == LV_DRAW_MASK_RES_FULL_COVER) {
if(opa > LV_OPA_MAX) {
#if LV_USE_GPU
if(disp->driver.gpu_fill_cb && lv_area_get_size(draw_area) > GPU_SIZE_LIMIT) {
disp->driver.gpu_fill_cb(&disp->driver, disp_buf, disp_w, draw_area, color);
return;
}
#endif
#if LV_USE_GPU_STM32_DMA2D
if(lv_area_get_size(draw_area) >= 240) {
lv_gpu_stm32_dma2d_fill(disp_buf_first, disp_w, color, draw_area_w, draw_area_h);
return;
}
#endif
/*Software rendering*/
for(y = 0; y < draw_area_h; y++) {
lv_color_fill(disp_buf_first, color, draw_area_w);
disp_buf_first += disp_w;
}
}
/*No mask with opacity*/
else {
#if LV_USE_GPU
if(disp->driver.gpu_blend_cb && lv_area_get_size(draw_area) > GPU_SIZE_LIMIT) {
static lv_color_t blend_buf[LV_HOR_RES_MAX];
for(x = 0; x < draw_area_w ; x++) blend_buf[x].full = color.full;
for(y = draw_area->y1; y <= draw_area->y2; y++) {
disp->driver.gpu_blend_cb(&disp->driver, disp_buf_first, blend_buf, draw_area_w, opa);
disp_buf_first += disp_w;
}
return;
}
#endif
#if LV_USE_GPU_STM32_DMA2D
if(lv_area_get_size(draw_area) >= 240) {
static lv_color_t blend_buf[LV_HOR_RES_MAX] = {0};
if(blend_buf[0].full != color.full) lv_color_fill(blend_buf, color, LV_HOR_RES_MAX);
lv_coord_t line_h = LV_HOR_RES_MAX / draw_area_w;
for(y = 0; y <= draw_area_h - line_h; y += line_h) {
lv_gpu_stm32_dma2d_blend(disp_buf_first, disp_w, blend_buf, opa, draw_area_w, draw_area_w, line_h);
disp_buf_first += disp_w * line_h;
}
if(y != draw_area_h) {
lv_gpu_stm32_dma2d_blend(disp_buf_first, disp_w, blend_buf, opa, draw_area_w, draw_area_w, draw_area_h - y);
}
return;
}
#endif
lv_color_t last_dest_color = LV_COLOR_BLACK;
lv_color_t last_res_color = lv_color_mix(color, last_dest_color, opa);
uint16_t color_premult[3];
lv_color_premult(color, opa, color_premult);
lv_opa_t opa_inv = 255 - opa;
for(y = 0; y < draw_area_h; y++) {
for(x = 0; x < draw_area_w; x++) {
if(last_dest_color.full != disp_buf_first[x].full) {
last_dest_color = disp_buf_first[x];
#if LV_COLOR_SCREEN_TRANSP
if(disp->driver.screen_transp) {
lv_color_mix_with_alpha(disp_buf_first[x], disp_buf_first[x].ch.alpha, color, opa, &last_res_color,
&last_res_color.ch.alpha);
}
else
#endif
{
last_res_color = lv_color_mix_premult(color_premult, disp_buf_first[x], opa_inv);
}
}
disp_buf_first[x] = last_res_color;
}
disp_buf_first += disp_w;
}
}
}
/*Masked*/
else {
/*DMA2D could be used here but it's much slower than software rendering*/
#if LV_USE_GPU_STM32_DMA2D && 0
if(lv_area_get_size(draw_area) > 240) {
lv_gpu_stm32_dma2d_fill_mask(disp_buf_first, disp_w, color, mask, opa, draw_area_w, draw_area_h);
return;
}
#endif
/*Buffer the result color to avoid recalculating the same color*/
lv_color_t last_dest_color;
lv_color_t last_res_color;
lv_opa_t last_mask = LV_OPA_TRANSP;
last_dest_color.full = disp_buf_first[0].full;
last_res_color.full = disp_buf_first[0].full;
int32_t x_end4 = draw_area_w - 4;
/*Only the mask matters*/
if(opa > LV_OPA_MAX) {
for(y = 0; y < draw_area_h; y++) {
const lv_opa_t * mask_tmp_x = mask;
#if 0
for(x = 0; x < draw_area_w; x++) {
#if LV_COLOR_SCREEN_TRANSP
FILL_NORMAL_MASK_PX_SCR_TRANSP(x, color)
#else
FILL_NORMAL_MASK_PX(x, color)
#endif
}
#else
for(x = 0; x < draw_area_w && ((lv_uintptr_t)mask_tmp_x & 0x3); x++) {
#if LV_COLOR_SCREEN_TRANSP
FILL_NORMAL_MASK_PX_SCR_TRANSP(x, color)
#else
FILL_NORMAL_MASK_PX(x, color)
#endif
}
uint32_t * mask32 = (uint32_t *) mask_tmp_x;
for(; x <= x_end4; x += 4) {
if(*mask32) {
if((*mask32) == 0xFFFFFFFF) {
disp_buf_first[x] = color;
disp_buf_first[x + 1] = color;
disp_buf_first[x + 2] = color;
disp_buf_first[x + 3] = color;
}
else {
mask_tmp_x = (const lv_opa_t *)mask32;
#if LV_COLOR_SCREEN_TRANSP
FILL_NORMAL_MASK_PX_SCR_TRANSP(x, color)
FILL_NORMAL_MASK_PX_SCR_TRANSP(x + 1, color)
FILL_NORMAL_MASK_PX_SCR_TRANSP(x + 2, color)
FILL_NORMAL_MASK_PX_SCR_TRANSP(x + 3, color)
#else
FILL_NORMAL_MASK_PX(x, color)
FILL_NORMAL_MASK_PX(x + 1, color)
FILL_NORMAL_MASK_PX(x + 2, color)
FILL_NORMAL_MASK_PX(x + 3, color)
#endif
}
}
mask32++;
}
mask_tmp_x = (const lv_opa_t *)mask32;
for(; x < draw_area_w ; x++) {
#if LV_COLOR_SCREEN_TRANSP
FILL_NORMAL_MASK_PX_SCR_TRANSP(x, color)
#else
FILL_NORMAL_MASK_PX(x, color)
#endif
}
#endif
disp_buf_first += disp_w;
mask += draw_area_w;
}
}
/*Handle opa and mask values too*/
else {
lv_opa_t opa_tmp = LV_OPA_TRANSP;
for(y = draw_area->y1; y <= draw_area->y2; y++) {
const lv_opa_t * mask_tmp_x = mask;
for(x = 0; x < draw_area_w; x++) {
if(*mask_tmp_x) {
if(*mask_tmp_x != last_mask) opa_tmp = *mask_tmp_x == LV_OPA_COVER ? opa :
(uint32_t)((uint32_t)(*mask_tmp_x) * opa) >> 8;
if(*mask_tmp_x != last_mask || last_dest_color.full != disp_buf_first[x].full) {
#if LV_COLOR_SCREEN_TRANSP
if(disp->driver.screen_transp) {
lv_color_mix_with_alpha(disp_buf_first[x], disp_buf_first[x].ch.alpha, color, opa_tmp, &last_res_color,
&last_res_color.ch.alpha);
}
else
#endif
{
if(opa_tmp == LV_OPA_COVER) last_res_color = color;
else last_res_color = lv_color_mix(color, disp_buf_first[x], opa_tmp);
}
last_mask = *mask_tmp_x;
last_dest_color.full = disp_buf_first[x].full;
}
disp_buf_first[x] = last_res_color;
}
mask_tmp_x++;
}
disp_buf_first += disp_w;
mask += draw_area_w;
}
}
}
}
/**
* Fill an area with a color but apply blending algorithms
* @param disp_area the current display area (destination area)
* @param disp_buf destination buffer
* @param draw_area fill this area (relative to `disp_area`)
* @param color fill color
* @param opa overall opacity in 0x00..0xff range
* @param mask a mask to apply on every pixel (uint8_t array with 0x00..0xff values).
* It fits into draw_area.
* @param mask_res LV_MASK_RES_COVER: the mask has only 0xff values (no mask),
* LV_MASK_RES_TRANSP: the mask has only 0x00 values (full transparent),
* LV_MASK_RES_CHANGED: the mask has mixed values
* @param mode blend mode from `lv_blend_mode_t`
*/
static void fill_blended(const lv_area_t * disp_area, lv_color_t * disp_buf, const lv_area_t * draw_area,
lv_color_t color, lv_opa_t opa,
const lv_opa_t * mask, lv_draw_mask_res_t mask_res, lv_blend_mode_t mode)
{
/*Get the width of the `disp_area` it will be used to go to the next line*/
int32_t disp_w = lv_area_get_width(disp_area);
/*Create a temp. disp_buf which always point to current line to draw*/
lv_color_t * disp_buf_tmp = disp_buf + disp_w * draw_area->y1;
lv_color_t (*blend_fp)(lv_color_t, lv_color_t, lv_opa_t);
switch(mode) {
case LV_BLEND_MODE_ADDITIVE:
blend_fp = color_blend_true_color_additive;
break;
case LV_BLEND_MODE_SUBTRACTIVE:
blend_fp = color_blend_true_color_subtractive;
break;
default:
LV_LOG_WARN("fill_blended: unsupported blend mode");
return;
}
int32_t x;
int32_t y;
/*Simple fill (maybe with opacity), no masking*/
if(mask_res == LV_DRAW_MASK_RES_FULL_COVER) {
lv_color_t last_dest_color = LV_COLOR_BLACK;
lv_color_t last_res_color = lv_color_mix(color, last_dest_color, opa);
for(y = draw_area->y1; y <= draw_area->y2; y++) {
for(x = draw_area->x1; x <= draw_area->x2; x++) {
if(last_dest_color.full != disp_buf_tmp[x].full) {
last_dest_color = disp_buf_tmp[x];
last_res_color = blend_fp(color, disp_buf_tmp[x], opa);
}
disp_buf_tmp[x] = last_res_color;
}
disp_buf_tmp += disp_w;
}
}
/*Masked*/
else {
/*Get the width of the `draw_area` it will be used to go to the next line of the mask*/
int32_t draw_area_w = lv_area_get_width(draw_area);
/* The mask is relative to the clipped area.
* In the cycles below mask will be indexed from `draw_area.x1`
* but it corresponds to zero index. So prepare `mask_tmp` accordingly. */
const lv_opa_t * mask_tmp = mask - draw_area->x1;
/*Buffer the result color to avoid recalculating the same color*/
lv_color_t last_dest_color;
lv_color_t last_res_color;
lv_opa_t last_mask = LV_OPA_TRANSP;
last_dest_color.full = disp_buf_tmp[0].full;
last_res_color.full = disp_buf_tmp[0].full;
for(y = draw_area->y1; y <= draw_area->y2; y++) {
for(x = draw_area->x1; x <= draw_area->x2; x++) {
if(mask_tmp[x] == 0) continue;
if(mask_tmp[x] != last_mask || last_dest_color.full != disp_buf_tmp[x].full) {
lv_opa_t opa_tmp = mask_tmp[x] >= LV_OPA_MAX ? opa : (uint32_t)((uint32_t)mask_tmp[x] * opa) >> 8;
last_res_color = blend_fp(color, disp_buf_tmp[x], opa_tmp);
last_mask = mask_tmp[x];
last_dest_color.full = disp_buf_tmp[x].full;
}
disp_buf_tmp[x] = last_res_color;
}
disp_buf_tmp += disp_w;
mask_tmp += draw_area_w;
}
}
}
static void map_set_px(const lv_area_t * disp_area, lv_color_t * disp_buf, const lv_area_t * draw_area,
const lv_area_t * map_area, const lv_color_t * map_buf, lv_opa_t opa,
const lv_opa_t * mask, lv_draw_mask_res_t mask_res)
{
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
/*Get the width of the `disp_area` it will be used to go to the next line*/
int32_t disp_w = lv_area_get_width(disp_area);
/*Get the width of the `draw_area` it will be used to go to the next line of the mask*/
int32_t draw_area_w = lv_area_get_width(draw_area);
/*Get the width of the `mask_area` it will be used to go to the next line*/
int32_t map_w = lv_area_get_width(map_area);
/*Create a temp. map_buf which always point to current line to draw*/
const lv_color_t * map_buf_tmp = map_buf + map_w * (draw_area->y1 - (map_area->y1 - disp_area->y1));
map_buf_tmp += (draw_area->x1 - (map_area->x1 - disp_area->x1));
map_buf_tmp -= draw_area->x1;
int32_t x;
int32_t y;
if(mask_res == LV_DRAW_MASK_RES_FULL_COVER) {
for(y = draw_area->y1; y <= draw_area->y2; y++) {
for(x = draw_area->x1; x <= draw_area->x2; x++) {
disp->driver.set_px_cb(&disp->driver, (void *)disp_buf, disp_w, x, y, map_buf_tmp[x], opa);
}
map_buf_tmp += map_w;
}
}
else {
/* The mask is relative to the clipped area.
* In the cycles below mask will be indexed from `draw_area.x1`
* but it corresponds to zero index. So prepare `mask_tmp` accordingly. */
const lv_opa_t * mask_tmp = mask - draw_area->x1;
for(y = draw_area->y1; y <= draw_area->y2; y++) {
for(x = draw_area->x1; x <= draw_area->x2; x++) {
if(mask_tmp[x]) {
disp->driver.set_px_cb(&disp->driver, (void *)disp_buf, disp_w, x, y, map_buf_tmp[x],
(uint32_t)((uint32_t)opa * mask_tmp[x]) >> 8);
}
}
mask_tmp += draw_area_w;
map_buf_tmp += map_w;
}
}
}
/**
* Copy an image to an area
* @param disp_area the current display area (destination area)
* @param disp_buf destination buffer
* @param map_area coordinates of the map (image) to copy. (absolute coordinates)
* @param map_buf the pixel of the image
* @param opa overall opacity in 0x00..0xff range
* @param mask a mask to apply on every pixel (uint8_t array with 0x00..0xff values).
* It fits into draw_area.
* @param mask_res LV_MASK_RES_COVER: the mask has only 0xff values (no mask),
* LV_MASK_RES_TRANSP: the mask has only 0x00 values (full transparent),
* LV_MASK_RES_CHANGED: the mask has mixed values
*/
LV_ATTRIBUTE_FAST_MEM static void map_normal(const lv_area_t * disp_area, lv_color_t * disp_buf,
const lv_area_t * draw_area,
const lv_area_t * map_area, const lv_color_t * map_buf, lv_opa_t opa,
const lv_opa_t * mask, lv_draw_mask_res_t mask_res)
{
/*Get the width of the `disp_area` it will be used to go to the next line*/
int32_t disp_w = lv_area_get_width(disp_area);
int32_t draw_area_w = lv_area_get_width(draw_area);
int32_t draw_area_h = lv_area_get_height(draw_area);
/*Get the width of the `mask_area` it will be used to go to the next line*/
int32_t map_w = lv_area_get_width(map_area);
/*Create a temp. disp_buf which always point to first pixel to draw*/
lv_color_t * disp_buf_first = disp_buf + disp_w * draw_area->y1 + draw_area->x1;
/*Create a temp. map_buf which always point to first pixel to draw from the map*/
const lv_color_t * map_buf_first = map_buf + map_w * (draw_area->y1 - (map_area->y1 - disp_area->y1));
map_buf_first += (draw_area->x1 - (map_area->x1 - disp_area->x1));
#if LV_COLOR_SCREEN_TRANSP || LV_USE_GPU
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
#endif
int32_t x;
int32_t y;
/*Simple fill (maybe with opacity), no masking*/
if(mask_res == LV_DRAW_MASK_RES_FULL_COVER) {
#if LV_USE_GPU
if(disp->driver.gpu_blend_cb && (lv_area_get_size(draw_area) > GPU_SIZE_LIMIT)) {
for(y = draw_area->y1; y <= draw_area->y2; y++) {
disp->driver.gpu_blend_cb(&disp->driver, disp_buf_first, map_buf_first, draw_area_w, opa);
disp_buf_first += disp_w;
map_buf_first += map_w;
}
return;
}
#endif
if(opa > LV_OPA_MAX) {
#if LV_USE_GPU_STM32_DMA2D
if(lv_area_get_size(draw_area) >= 240) {
lv_gpu_stm32_dma2d_copy(disp_buf_first, disp_w, map_buf_first, map_w, draw_area_w, draw_area_h);
return;
}
#endif
/*Software rendering*/
for(y = 0; y < draw_area_h; y++) {
_lv_memcpy(disp_buf_first, map_buf_first, draw_area_w * sizeof(lv_color_t));
disp_buf_first += disp_w;
map_buf_first += map_w;
}
}
else {
#if LV_USE_GPU_STM32_DMA2D
if(lv_area_get_size(draw_area) >= 240) {
lv_gpu_stm32_dma2d_blend(disp_buf_first, disp_w, map_buf_first, opa, map_w, draw_area_w, draw_area_h);
return;
}
#endif
/*Software rendering*/
for(y = 0; y < draw_area_h; y++) {
for(x = 0; x < draw_area_w; x++) {
#if LV_COLOR_SCREEN_TRANSP
if(disp->driver.screen_transp) {
lv_color_mix_with_alpha(disp_buf_first[x], disp_buf_first[x].ch.alpha, map_buf_first[x], opa, &disp_buf_first[x],
&disp_buf_first[x].ch.alpha);
}
else
#endif
{
disp_buf_first[x] = lv_color_mix(map_buf_first[x], disp_buf_first[x], opa);
}
}
disp_buf_first += disp_w;
map_buf_first += map_w;
}
}
}
/*Masked*/
else {
/*Only the mask matters*/
if(opa > LV_OPA_MAX) {
/*Go to the first pixel of the row */
int32_t x_end4 = draw_area_w - 4;
for(y = 0; y < draw_area_h; y++) {
const lv_opa_t * mask_tmp_x = mask;
#if 0
for(x = 0; x < draw_area_w; x++) {
MAP_NORMAL_MASK_PX(x);
}
#else
for(x = 0; x < draw_area_w && ((lv_uintptr_t)mask_tmp_x & 0x3); x++) {
#if LV_COLOR_SCREEN_TRANSP
MAP_NORMAL_MASK_PX_SCR_TRANSP(x)
#else
MAP_NORMAL_MASK_PX(x)
#endif
}
uint32_t * mask32 = (uint32_t *) mask_tmp_x;
for(; x < x_end4; x += 4) {
if(*mask32) {
if((*mask32) == 0xFFFFFFFF) {
disp_buf_first[x] = map_buf_first[x];
disp_buf_first[x + 1] = map_buf_first[x + 1];
disp_buf_first[x + 2] = map_buf_first[x + 2];
disp_buf_first[x + 3] = map_buf_first[x + 3];
}
else {
mask_tmp_x = (const lv_opa_t *)mask32;
#if LV_COLOR_SCREEN_TRANSP
MAP_NORMAL_MASK_PX_SCR_TRANSP(x)
MAP_NORMAL_MASK_PX_SCR_TRANSP(x + 1)
MAP_NORMAL_MASK_PX_SCR_TRANSP(x + 2)
MAP_NORMAL_MASK_PX_SCR_TRANSP(x + 3)
#else
MAP_NORMAL_MASK_PX(x)
MAP_NORMAL_MASK_PX(x + 1)
MAP_NORMAL_MASK_PX(x + 2)
MAP_NORMAL_MASK_PX(x + 3)
#endif
}
}
mask32++;
}
mask_tmp_x = (const lv_opa_t *)mask32;
for(; x < draw_area_w ; x++) {
#if LV_COLOR_SCREEN_TRANSP
MAP_NORMAL_MASK_PX_SCR_TRANSP(x)
#else
MAP_NORMAL_MASK_PX(x)
#endif
}
#endif
disp_buf_first += disp_w;
mask += draw_area_w;
map_buf_first += map_w;
}
}
/*Handle opa and mask values too*/
else {
for(y = 0; y < draw_area_h; y++) {
for(x = 0; x < draw_area_w; x++) {
if(mask[x]) {
lv_opa_t opa_tmp = mask[x] >= LV_OPA_MAX ? opa : ((opa * mask[x]) >> 8);
#if LV_COLOR_SCREEN_TRANSP
if(disp->driver.screen_transp) {
lv_color_mix_with_alpha(disp_buf_first[x], disp_buf_first[x].ch.alpha, map_buf_first[x], opa_tmp, &disp_buf_first[x],
&disp_buf_first[x].ch.alpha);
}
else
#endif
{
disp_buf_first[x] = lv_color_mix(map_buf_first[x], disp_buf_first[x], opa_tmp);
}
}
}
disp_buf_first += disp_w;
mask += draw_area_w;
map_buf_first += map_w;
}
}
}
}
static void map_blended(const lv_area_t * disp_area, lv_color_t * disp_buf, const lv_area_t * draw_area,
const lv_area_t * map_area, const lv_color_t * map_buf, lv_opa_t opa,
const lv_opa_t * mask, lv_draw_mask_res_t mask_res, lv_blend_mode_t mode)
{
/*Get the width of the `disp_area` it will be used to go to the next line*/
int32_t disp_w = lv_area_get_width(disp_area);
/*Get the width of the `draw_area` it will be used to go to the next line of the mask*/
int32_t draw_area_w = lv_area_get_width(draw_area);
/*Get the width of the `mask_area` it will be used to go to the next line*/
int32_t map_w = lv_area_get_width(map_area);
/*Create a temp. disp_buf which always point to current line to draw*/
lv_color_t * disp_buf_tmp = disp_buf + disp_w * draw_area->y1;
/*Create a temp. map_buf which always point to current line to draw*/
const lv_color_t * map_buf_tmp = map_buf + map_w * (draw_area->y1 - (map_area->y1 - disp_area->y1));
lv_color_t (*blend_fp)(lv_color_t, lv_color_t, lv_opa_t);
switch(mode) {
case LV_BLEND_MODE_ADDITIVE:
blend_fp = color_blend_true_color_additive;
break;
case LV_BLEND_MODE_SUBTRACTIVE:
blend_fp = color_blend_true_color_subtractive;
break;
default:
LV_LOG_WARN("fill_blended: unsupported blend mode");
return;
}
int32_t x;
int32_t y;
/*Simple fill (maybe with opacity), no masking*/
if(mask_res == LV_DRAW_MASK_RES_FULL_COVER) {
/*Go to the first px of the row*/
map_buf_tmp += (draw_area->x1 - (map_area->x1 - disp_area->x1));
/*The map will be indexed from `draw_area->x1` so compensate it.*/
map_buf_tmp -= draw_area->x1;
for(y = draw_area->y1; y <= draw_area->y2; y++) {
for(x = draw_area->x1; x <= draw_area->x2; x++) {
disp_buf_tmp[x] = blend_fp(map_buf_tmp[x], disp_buf_tmp[x], opa);
}
disp_buf_tmp += disp_w;
map_buf_tmp += map_w;
}
}
/*Masked*/
else {
/* The mask is relative to the clipped area.
* In the cycles below mask will be indexed from `draw_area.x1`
* but it corresponds to zero index. So prepare `mask_tmp` accordingly. */
const lv_opa_t * mask_tmp = mask - draw_area->x1;
map_buf_tmp -= draw_area->x1;
for(y = draw_area->y1; y <= draw_area->y2; y++) {
for(x = draw_area->x1; x <= draw_area->x2; x++) {
if(mask_tmp[x] == 0) continue;
lv_opa_t opa_tmp = mask_tmp[x] >= LV_OPA_MAX ? opa : ((opa * mask_tmp[x]) >> 8);
disp_buf_tmp[x] = blend_fp(map_buf_tmp[x], disp_buf_tmp[x], opa_tmp);
}
disp_buf_tmp += disp_w;
mask_tmp += draw_area_w;
map_buf_tmp += map_w;
}
}
}
static inline lv_color_t color_blend_true_color_additive(lv_color_t fg, lv_color_t bg, lv_opa_t opa)
{
if(opa <= LV_OPA_MIN) return bg;
uint32_t tmp;
#if LV_COLOR_DEPTH == 1
tmp = bg.full + fg.full;
fg.full = LV_MATH_MIN(tmp, 1);
#else
tmp = bg.ch.red + fg.ch.red;
#if LV_COLOR_DEPTH == 8
fg.ch.red = LV_MATH_MIN(tmp, 7);
#elif LV_COLOR_DEPTH == 16
fg.ch.red = LV_MATH_MIN(tmp, 31);
#elif LV_COLOR_DEPTH == 32
fg.ch.red = LV_MATH_MIN(tmp, 255);
#endif
#if LV_COLOR_DEPTH == 8
fg.ch.green = LV_MATH_MIN(tmp, 7);
#elif LV_COLOR_DEPTH == 16
#if LV_COLOR_16_SWAP == 0
tmp = bg.ch.green + fg.ch.green;
fg.ch.green = LV_MATH_MIN(tmp, 63);
#else
tmp = (bg.ch.green_h << 3) + bg.ch.green_l + (fg.ch.green_h << 3) + fg.ch.green_l;
tmp = LV_MATH_MIN(tmp, 63);
fg.ch.green_h = tmp >> 3;
fg.ch.green_l = tmp & 0x7;
#endif
#elif LV_COLOR_DEPTH == 32
fg.ch.green = LV_MATH_MIN(tmp, 255);
#endif
tmp = bg.ch.blue + fg.ch.blue;
#if LV_COLOR_DEPTH == 8
fg.ch.blue = LV_MATH_MIN(tmp, 4);
#elif LV_COLOR_DEPTH == 16
fg.ch.blue = LV_MATH_MIN(tmp, 31);
#elif LV_COLOR_DEPTH == 32
fg.ch.blue = LV_MATH_MIN(tmp, 255);
#endif
#endif
if(opa == LV_OPA_COVER) return fg;
return lv_color_mix(fg, bg, opa);
}
static inline lv_color_t color_blend_true_color_subtractive(lv_color_t fg, lv_color_t bg, lv_opa_t opa)
{
if(opa <= LV_OPA_MIN) return bg;
int32_t tmp;
tmp = bg.ch.red - fg.ch.red;
fg.ch.red = LV_MATH_MAX(tmp, 0);
#if LV_COLOR_16_SWAP == 0
tmp = bg.ch.green - fg.ch.green;
fg.ch.green = LV_MATH_MAX(tmp, 0);
#else
tmp = (bg.ch.green_h << 3) + bg.ch.green_l + (fg.ch.green_h << 3) + fg.ch.green_l;
tmp = LV_MATH_MAX(tmp, 0);
fg.ch.green_h = tmp >> 3;
fg.ch.green_l = tmp & 0x7;
#endif
tmp = bg.ch.blue - fg.ch.blue;
fg.ch.blue = LV_MATH_MAX(tmp, 0);
if(opa == LV_OPA_COVER) return fg;
return lv_color_mix(fg, bg, opa);
}

57
nodemcuv2/lv_arduino/src/src/lv_draw/lv_draw_blend.h Normal file
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/**
* @file lv_draw_blend.h
*
*/
#ifndef LV_DRAW_BLEND_H
#define LV_DRAW_BLEND_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_misc/lv_color.h"
#include "../lv_misc/lv_area.h"
#include "lv_draw_mask.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
enum {
LV_BLEND_MODE_NORMAL,
LV_BLEND_MODE_ADDITIVE,
LV_BLEND_MODE_SUBTRACTIVE,
};
typedef uint8_t lv_blend_mode_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
//! @cond Doxygen_Suppress
LV_ATTRIBUTE_FAST_MEM void _lv_blend_fill(const lv_area_t * clip_area, const lv_area_t * fill_area, lv_color_t color,
lv_opa_t * mask, lv_draw_mask_res_t mask_res, lv_opa_t opa, lv_blend_mode_t mode);
LV_ATTRIBUTE_FAST_MEM void _lv_blend_map(const lv_area_t * clip_area, const lv_area_t * map_area,
const lv_color_t * map_buf,
lv_opa_t * mask, lv_draw_mask_res_t mask_res, lv_opa_t opa, lv_blend_mode_t mode);
//! @endcond
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_DRAW_BLEND_H*/

638
nodemcuv2/lv_arduino/src/src/lv_draw/lv_draw_img.c Normal file
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@@ -0,0 +1,638 @@
/**
* @file lv_draw_img.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_draw_img.h"
#include "lv_img_cache.h"
#include "../lv_hal/lv_hal_disp.h"
#include "../lv_misc/lv_log.h"
#include "../lv_core/lv_refr.h"
#include "../lv_misc/lv_mem.h"
#include "../lv_misc/lv_math.h"
#include "../lv_gpu/lv_gpu_stm32_dma2d.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
LV_ATTRIBUTE_FAST_MEM static lv_res_t lv_img_draw_core(const lv_area_t * coords, const lv_area_t * clip_area,
const void * src,
lv_draw_img_dsc_t * draw_dsc);
LV_ATTRIBUTE_FAST_MEM static void lv_draw_map(const lv_area_t * map_area, const lv_area_t * clip_area,
const uint8_t * map_p,
lv_draw_img_dsc_t * draw_dsc,
bool chroma_key, bool alpha_byte);
static void show_error(const lv_area_t * coords, const lv_area_t * clip_area, const char * msg);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void lv_draw_img_dsc_init(lv_draw_img_dsc_t * dsc)
{
_lv_memset_00(dsc, sizeof(lv_draw_img_dsc_t));
dsc->recolor = LV_COLOR_BLACK;
dsc->opa = LV_OPA_COVER;
dsc->zoom = LV_IMG_ZOOM_NONE;
dsc->antialias = LV_ANTIALIAS;
}
/**
* Draw an image
* @param coords the coordinates of the image
* @param mask the image will be drawn only in this area
* @param src pointer to a lv_color_t array which contains the pixels of the image
* @param style style of the image
* @param angle rotation angle of the image
* @param center rotation center of the image
* @param antialias anti-alias transformations (rotate, zoom) or not
* @param opa_scale scale down all opacities by the factor
*/
void lv_draw_img(const lv_area_t * coords, const lv_area_t * mask, const void * src, lv_draw_img_dsc_t * dsc)
{
if(src == NULL) {
LV_LOG_WARN("Image draw: src is NULL");
show_error(coords, mask, "No\ndata");
return;
}
if(dsc->opa <= LV_OPA_MIN) return;
lv_res_t res;
res = lv_img_draw_core(coords, mask, src, dsc);
if(res == LV_RES_INV) {
LV_LOG_WARN("Image draw error");
show_error(coords, mask, "No\ndata");
return;
}
}
/**
* Get the pixel size of a color format in bits
* @param cf a color format (`LV_IMG_CF_...`)
* @return the pixel size in bits
*/
uint8_t lv_img_cf_get_px_size(lv_img_cf_t cf)
{
uint8_t px_size = 0;
switch(cf) {
case LV_IMG_CF_UNKNOWN:
case LV_IMG_CF_RAW:
px_size = 0;
break;
case LV_IMG_CF_TRUE_COLOR:
case LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED:
px_size = LV_COLOR_SIZE;
break;
case LV_IMG_CF_TRUE_COLOR_ALPHA:
px_size = LV_IMG_PX_SIZE_ALPHA_BYTE << 3;
break;
case LV_IMG_CF_INDEXED_1BIT:
case LV_IMG_CF_ALPHA_1BIT:
px_size = 1;
break;
case LV_IMG_CF_INDEXED_2BIT:
case LV_IMG_CF_ALPHA_2BIT:
px_size = 2;
break;
case LV_IMG_CF_INDEXED_4BIT:
case LV_IMG_CF_ALPHA_4BIT:
px_size = 4;
break;
case LV_IMG_CF_INDEXED_8BIT:
case LV_IMG_CF_ALPHA_8BIT:
px_size = 8;
break;
default:
px_size = 0;
break;
}
return px_size;
}
/**
* Check if a color format is chroma keyed or not
* @param cf a color format (`LV_IMG_CF_...`)
* @return true: chroma keyed; false: not chroma keyed
*/
bool lv_img_cf_is_chroma_keyed(lv_img_cf_t cf)
{
bool is_chroma_keyed = false;
switch(cf) {
case LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED:
case LV_IMG_CF_RAW_CHROMA_KEYED:
case LV_IMG_CF_INDEXED_1BIT:
case LV_IMG_CF_INDEXED_2BIT:
case LV_IMG_CF_INDEXED_4BIT:
case LV_IMG_CF_INDEXED_8BIT:
is_chroma_keyed = true;
break;
default:
is_chroma_keyed = false;
break;
}
return is_chroma_keyed;
}
/**
* Check if a color format has alpha channel or not
* @param cf a color format (`LV_IMG_CF_...`)
* @return true: has alpha channel; false: doesn't have alpha channel
*/
bool lv_img_cf_has_alpha(lv_img_cf_t cf)
{
bool has_alpha = false;
switch(cf) {
case LV_IMG_CF_TRUE_COLOR_ALPHA:
case LV_IMG_CF_RAW_ALPHA:
case LV_IMG_CF_INDEXED_1BIT:
case LV_IMG_CF_INDEXED_2BIT:
case LV_IMG_CF_INDEXED_4BIT:
case LV_IMG_CF_INDEXED_8BIT:
case LV_IMG_CF_ALPHA_1BIT:
case LV_IMG_CF_ALPHA_2BIT:
case LV_IMG_CF_ALPHA_4BIT:
case LV_IMG_CF_ALPHA_8BIT:
has_alpha = true;
break;
default:
has_alpha = false;
break;
}
return has_alpha;
}
/**
* Get the type of an image source
* @param src pointer to an image source:
* - pointer to an 'lv_img_t' variable (image stored internally and compiled into the code)
* - a path to a file (e.g. "S:/folder/image.bin")
* - or a symbol (e.g. LV_SYMBOL_CLOSE)
* @return type of the image source LV_IMG_SRC_VARIABLE/FILE/SYMBOL/UNKNOWN
*/
lv_img_src_t lv_img_src_get_type(const void * src)
{
lv_img_src_t img_src_type = LV_IMG_SRC_UNKNOWN;
if(src == NULL) return img_src_type;
const uint8_t * u8_p = src;
/*The first byte shows the type of the image source*/
if(u8_p[0] >= 0x20 && u8_p[0] <= 0x7F) {
img_src_type = LV_IMG_SRC_FILE; /*If it's an ASCII character then it's file name*/
}
else if(u8_p[0] >= 0x80) {
img_src_type = LV_IMG_SRC_SYMBOL; /*Symbols begins after 0x7F*/
}
else {
img_src_type = LV_IMG_SRC_VARIABLE; /*`lv_img_dsc_t` is design to the first byte < 0x20*/
}
if(LV_IMG_SRC_UNKNOWN == img_src_type) {
LV_LOG_WARN("lv_img_src_get_type: unknown image type");
}
return img_src_type;
}
/**********************
* STATIC FUNCTIONS
**********************/
LV_ATTRIBUTE_FAST_MEM static lv_res_t lv_img_draw_core(const lv_area_t * coords, const lv_area_t * clip_area,
const void * src,
lv_draw_img_dsc_t * draw_dsc)
{
if(draw_dsc->opa <= LV_OPA_MIN) return LV_RES_OK;
lv_img_cache_entry_t * cdsc = _lv_img_cache_open(src, draw_dsc->recolor);
if(cdsc == NULL) return LV_RES_INV;
bool chroma_keyed = lv_img_cf_is_chroma_keyed(cdsc->dec_dsc.header.cf);
bool alpha_byte = lv_img_cf_has_alpha(cdsc->dec_dsc.header.cf);
if(cdsc->dec_dsc.error_msg != NULL) {
LV_LOG_WARN("Image draw error");
show_error(coords, clip_area, cdsc->dec_dsc.error_msg);
}
/* The decoder could open the image and gave the entire uncompressed image.
* Just draw it!*/
else if(cdsc->dec_dsc.img_data) {
lv_area_t map_area_rot;
lv_area_copy(&map_area_rot, coords);
if(draw_dsc->angle || draw_dsc->zoom != LV_IMG_ZOOM_NONE) {
int32_t w = lv_area_get_width(coords);
int32_t h = lv_area_get_height(coords);
_lv_img_buf_get_transformed_area(&map_area_rot, w, h, draw_dsc->angle, draw_dsc->zoom, &draw_dsc->pivot);
map_area_rot.x1 += coords->x1;
map_area_rot.y1 += coords->y1;
map_area_rot.x2 += coords->x1;
map_area_rot.y2 += coords->y1;
}
lv_area_t mask_com; /*Common area of mask and coords*/
bool union_ok;
union_ok = _lv_area_intersect(&mask_com, clip_area, &map_area_rot);
if(union_ok == false) {
return LV_RES_OK; /*Out of mask. There is nothing to draw so the image is drawn
successfully.*/
}
lv_draw_map(coords, &mask_com, cdsc->dec_dsc.img_data, draw_dsc, chroma_keyed, alpha_byte);
}
/* The whole uncompressed image is not available. Try to read it line-by-line*/
else {
lv_area_t mask_com; /*Common area of mask and coords*/
bool union_ok;
union_ok = _lv_area_intersect(&mask_com, clip_area, coords);
if(union_ok == false) {
return LV_RES_OK; /*Out of mask. There is nothing to draw so the image is drawn
successfully.*/
}
int32_t width = lv_area_get_width(&mask_com);
uint8_t * buf = _lv_mem_buf_get(lv_area_get_width(&mask_com) *
LV_IMG_PX_SIZE_ALPHA_BYTE); /*+1 because of the possible alpha byte*/
lv_area_t line;
lv_area_copy(&line, &mask_com);
lv_area_set_height(&line, 1);
int32_t x = mask_com.x1 - coords->x1;
int32_t y = mask_com.y1 - coords->y1;
int32_t row;
lv_res_t read_res;
for(row = mask_com.y1; row <= mask_com.y2; row++) {
lv_area_t mask_line;
union_ok = _lv_area_intersect(&mask_line, clip_area, &line);
if(union_ok == false) continue;
read_res = lv_img_decoder_read_line(&cdsc->dec_dsc, x, y, width, buf);
if(read_res != LV_RES_OK) {
lv_img_decoder_close(&cdsc->dec_dsc);
LV_LOG_WARN("Image draw can't read the line");
_lv_mem_buf_release(buf);
return LV_RES_INV;
}
lv_draw_map(&line, &mask_line, buf, draw_dsc, chroma_keyed, alpha_byte);
line.y1++;
line.y2++;
y++;
}
_lv_mem_buf_release(buf);
}
return LV_RES_OK;
}
/**
* Draw a color map to the display (image)
* @param cords_p coordinates the color map
* @param mask_p the map will drawn only on this area (truncated to VDB area)
* @param map_p pointer to a lv_color_t array
* @param opa opacity of the map
* @param chroma_keyed true: enable transparency of LV_IMG_LV_COLOR_TRANSP color pixels
* @param alpha_byte true: extra alpha byte is inserted for every pixel
* @param style style of the image
* @param angle angle in degree
* @param pivot center of rotation
* @param zoom zoom factor
* @param antialias anti-alias transformations (rotate, zoom) or not
*/
LV_ATTRIBUTE_FAST_MEM static void lv_draw_map(const lv_area_t * map_area, const lv_area_t * clip_area,
const uint8_t * map_p,
lv_draw_img_dsc_t * draw_dsc, bool chroma_key, bool alpha_byte)
{
/* Use the clip area as draw area*/
lv_area_t draw_area;
lv_area_copy(&draw_area, clip_area);
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
lv_disp_buf_t * vdb = lv_disp_get_buf(disp);
const lv_area_t * disp_area = &vdb->area;
/* Now `draw_area` has absolute coordinates.
* Make it relative to `disp_area` to simplify draw to `disp_buf`*/
draw_area.x1 -= disp_area->x1;
draw_area.y1 -= disp_area->y1;
draw_area.x2 -= disp_area->x1;
draw_area.y2 -= disp_area->y1;
uint8_t other_mask_cnt = lv_draw_mask_get_cnt();
/*The simplest case just copy the pixels into the VDB*/
if(other_mask_cnt == 0 && draw_dsc->angle == 0 && draw_dsc->zoom == LV_IMG_ZOOM_NONE &&
chroma_key == false && alpha_byte == false && draw_dsc->recolor_opa == LV_OPA_TRANSP) {
_lv_blend_map(clip_area, map_area, (lv_color_t *)map_p, NULL, LV_DRAW_MASK_RES_FULL_COVER, draw_dsc->opa,
draw_dsc->blend_mode);
}
/*In the other cases every pixel need to be checked one-by-one*/
else {
/*The pixel size in byte is different if an alpha byte is added too*/
uint8_t px_size_byte = alpha_byte ? LV_IMG_PX_SIZE_ALPHA_BYTE : sizeof(lv_color_t);
/*Go to the first displayed pixel of the map*/
int32_t map_w = lv_area_get_width(map_area);
const uint8_t * map_buf_tmp = map_p;
map_buf_tmp += map_w * (draw_area.y1 - (map_area->y1 - disp_area->y1)) * px_size_byte;
map_buf_tmp += (draw_area.x1 - (map_area->x1 - disp_area->x1)) * px_size_byte;
lv_color_t c;
lv_color_t chroma_keyed_color = LV_COLOR_TRANSP;
uint32_t px_i = 0;
const uint8_t * map_px;
lv_area_t blend_area;
blend_area.x1 = draw_area.x1 + disp_area->x1;
blend_area.x2 = blend_area.x1 + lv_area_get_width(&draw_area) - 1;
blend_area.y1 = disp_area->y1 + draw_area.y1;
blend_area.y2 = blend_area.y1;
lv_coord_t draw_area_h = lv_area_get_height(&draw_area);
lv_coord_t draw_area_w = lv_area_get_width(&draw_area);
#if LV_USE_IMG_TRANSFORM
bool transform = draw_dsc->angle != 0 || draw_dsc->zoom != LV_IMG_ZOOM_NONE ? true : false;
#else
bool transform = false;
#endif
/*Simple ARGB image. Handle it as special case because it's very common*/
if(other_mask_cnt == 0 && !transform && !chroma_key && draw_dsc->recolor_opa == LV_OPA_TRANSP && alpha_byte) {
#if LV_USE_GPU_STM32_DMA2D && LV_COLOR_DEPTH == 32
/*Blend ARGB images directly*/
if(lv_area_get_size(&draw_area) > 240) {
int32_t disp_w = lv_area_get_width(disp_area);
lv_color_t * disp_buf = vdb->buf_act;
lv_color_t * disp_buf_first = disp_buf + disp_w * draw_area.y1 + draw_area.x1;
lv_gpu_stm32_dma2d_blend(disp_buf_first, disp_w, (const lv_color_t *)map_buf_tmp, draw_dsc->opa, map_w, draw_area_w,
draw_area_h);
return;
}
#endif
/*Build the image and a mask line-by-line*/
uint32_t mask_buf_size = lv_area_get_size(&draw_area) > LV_HOR_RES_MAX ? LV_HOR_RES_MAX : lv_area_get_size(&draw_area);
lv_color_t * map2 = _lv_mem_buf_get(mask_buf_size * sizeof(lv_color_t));
lv_opa_t * mask_buf = _lv_mem_buf_get(mask_buf_size);
int32_t x;
int32_t y;
for(y = 0; y < draw_area_h; y++) {
map_px = map_buf_tmp;
for(x = 0; x < draw_area_w; x++, map_px += px_size_byte, px_i++) {
lv_opa_t px_opa = map_px[LV_IMG_PX_SIZE_ALPHA_BYTE - 1];
mask_buf[px_i] = px_opa;
if(px_opa) {
#if LV_COLOR_DEPTH == 8
map2[px_i].full = map_px[0];
#elif LV_COLOR_DEPTH == 16
map2[px_i].full = map_px[0] + (map_px[1] << 8);
#elif LV_COLOR_DEPTH == 32
map2[px_i].full = *((uint32_t *)map_px);
#endif
}
#if LV_COLOR_DEPTH == 32
map2[px_i].ch.alpha = 0xFF;
#endif
}
map_buf_tmp += map_w * px_size_byte;
if(px_i + lv_area_get_width(&draw_area) < mask_buf_size) {
blend_area.y2 ++;
}
else {
_lv_blend_map(clip_area, &blend_area, map2, mask_buf, LV_DRAW_MASK_RES_CHANGED, draw_dsc->opa, draw_dsc->blend_mode);
blend_area.y1 = blend_area.y2 + 1;
blend_area.y2 = blend_area.y1;
px_i = 0;
}
}
/*Flush the last part*/
if(blend_area.y1 != blend_area.y2) {
blend_area.y2--;
_lv_blend_map(clip_area, &blend_area, map2, mask_buf, LV_DRAW_MASK_RES_CHANGED, draw_dsc->opa, draw_dsc->blend_mode);
}
_lv_mem_buf_release(mask_buf);
_lv_mem_buf_release(map2);
}
/*Most complicated case: transform or other mask or chroma keyed*/
else {
/*Build the image and a mask line-by-line*/
uint32_t mask_buf_size = lv_area_get_size(&draw_area) > LV_HOR_RES_MAX ? LV_HOR_RES_MAX : lv_area_get_size(&draw_area);
lv_color_t * map2 = _lv_mem_buf_get(mask_buf_size * sizeof(lv_color_t));
lv_opa_t * mask_buf = _lv_mem_buf_get(mask_buf_size);
#if LV_USE_IMG_TRANSFORM
lv_img_transform_dsc_t trans_dsc;
_lv_memset_00(&trans_dsc, sizeof(lv_img_transform_dsc_t));
if(transform) {
lv_img_cf_t cf = LV_IMG_CF_TRUE_COLOR;
if(alpha_byte) cf = LV_IMG_CF_TRUE_COLOR_ALPHA;
else if(chroma_key) cf = LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED;
trans_dsc.cfg.angle = draw_dsc->angle;
trans_dsc.cfg.zoom = draw_dsc->zoom;
trans_dsc.cfg.src = map_p;
trans_dsc.cfg.src_w = map_w;
trans_dsc.cfg.src_h = lv_area_get_height(map_area);;
trans_dsc.cfg.cf = cf;
trans_dsc.cfg.pivot_x = draw_dsc->pivot.x;
trans_dsc.cfg.pivot_y = draw_dsc->pivot.y;
trans_dsc.cfg.color = draw_dsc->recolor;
trans_dsc.cfg.antialias = draw_dsc->antialias;
_lv_img_buf_transform_init(&trans_dsc);
}
#endif
uint16_t recolor_premult[3] = {0};
lv_opa_t recolor_opa_inv = 255 - draw_dsc->recolor_opa;
if(draw_dsc->recolor_opa != 0) {
lv_color_premult(draw_dsc->recolor, draw_dsc->recolor_opa, recolor_premult);
}
lv_draw_mask_res_t mask_res;
mask_res = (alpha_byte || chroma_key || draw_dsc->angle ||
draw_dsc->zoom != LV_IMG_ZOOM_NONE) ? LV_DRAW_MASK_RES_CHANGED : LV_DRAW_MASK_RES_FULL_COVER;
/*Prepare the `mask_buf`if there are other masks*/
if(other_mask_cnt) {
_lv_memset_ff(mask_buf, mask_buf_size);
}
int32_t x;
int32_t y;
#if LV_USE_IMG_TRANSFORM
int32_t rot_y = disp_area->y1 + draw_area.y1 - map_area->y1;
#endif
for(y = 0; y < draw_area_h; y++) {
map_px = map_buf_tmp;
uint32_t px_i_start = px_i;
#if LV_USE_IMG_TRANSFORM
int32_t rot_x = disp_area->x1 + draw_area.x1 - map_area->x1;
#endif
for(x = 0; x < draw_area_w; x++, map_px += px_size_byte, px_i++) {
#if LV_USE_IMG_TRANSFORM
if(transform) {
/*Transform*/
bool ret;
ret = _lv_img_buf_transform(&trans_dsc, rot_x + x, rot_y + y);
if(ret == false) {
mask_buf[px_i] = LV_OPA_TRANSP;
continue;
}
else {
mask_buf[px_i] = trans_dsc.res.opa;
c.full = trans_dsc.res.color.full;
}
}
/*No transform*/
else
#endif
{
if(alpha_byte) {
lv_opa_t px_opa = map_px[LV_IMG_PX_SIZE_ALPHA_BYTE - 1];
mask_buf[px_i] = px_opa;
if(px_opa == 0) {
#if LV_COLOR_DEPTH == 32
map2[px_i].full = 0;
#endif
continue;
}
}
else {
mask_buf[px_i] = 0xFF;
}
#if LV_COLOR_DEPTH == 1
c.full = map_px[0];
#elif LV_COLOR_DEPTH == 8
c.full = map_px[0];
#elif LV_COLOR_DEPTH == 16
c.full = map_px[0] + (map_px[1] << 8);
#elif LV_COLOR_DEPTH == 32
c.full = *((uint32_t *)map_px);
c.ch.alpha = 0xFF;
#endif
if(chroma_key) {
if(c.full == chroma_keyed_color.full) {
mask_buf[px_i] = LV_OPA_TRANSP;
#if LV_COLOR_DEPTH == 32
map2[px_i].full = 0;
#endif
continue;
}
}
}
if(draw_dsc->recolor_opa != 0) {
c = lv_color_mix_premult(recolor_premult, c, recolor_opa_inv);
}
map2[px_i].full = c.full;
}
/*Apply the masks if any*/
if(other_mask_cnt) {
lv_draw_mask_res_t mask_res_sub;
mask_res_sub = lv_draw_mask_apply(mask_buf + px_i_start, draw_area.x1 + vdb->area.x1, y + draw_area.y1 + vdb->area.y1,
lv_area_get_width(&draw_area));
if(mask_res_sub == LV_DRAW_MASK_RES_TRANSP) {
_lv_memset_00(mask_buf + px_i_start, lv_area_get_width(&draw_area));
mask_res = LV_DRAW_MASK_RES_CHANGED;
}
else if(mask_res_sub == LV_DRAW_MASK_RES_CHANGED) {
mask_res = LV_DRAW_MASK_RES_CHANGED;
}
}
map_buf_tmp += map_w * px_size_byte;
if(px_i + lv_area_get_width(&draw_area) < mask_buf_size) {
blend_area.y2 ++;
}
else {
_lv_blend_map(clip_area, &blend_area, map2, mask_buf, mask_res, draw_dsc->opa, draw_dsc->blend_mode);
blend_area.y1 = blend_area.y2 + 1;
blend_area.y2 = blend_area.y1;
px_i = 0;
mask_res = (alpha_byte || chroma_key || draw_dsc->angle ||
draw_dsc->zoom != LV_IMG_ZOOM_NONE) ? LV_DRAW_MASK_RES_CHANGED : LV_DRAW_MASK_RES_FULL_COVER;
/*Prepare the `mask_buf`if there are other masks*/
if(other_mask_cnt) {
_lv_memset_ff(mask_buf, mask_buf_size);
}
}
}
/*Flush the last part*/
if(blend_area.y1 != blend_area.y2) {
blend_area.y2--;
_lv_blend_map(clip_area, &blend_area, map2, mask_buf, mask_res, draw_dsc->opa, draw_dsc->blend_mode);
}
_lv_mem_buf_release(mask_buf);
_lv_mem_buf_release(map2);
}
}
}
static void show_error(const lv_area_t * coords, const lv_area_t * clip_area, const char * msg)
{
lv_draw_rect_dsc_t rect_dsc;
lv_draw_rect_dsc_init(&rect_dsc);
rect_dsc.bg_color = LV_COLOR_WHITE;
lv_draw_rect(coords, clip_area, &rect_dsc);
lv_draw_label_dsc_t label_dsc;
lv_draw_label_dsc_init(&label_dsc);
lv_draw_label(coords, clip_area, &label_dsc, msg, NULL);
}

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/**
* @file lv_draw_img.h
*
*/
#ifndef LV_DRAW_IMG_H
#define LV_DRAW_IMG_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lv_img_decoder.h"
#include "lv_img_buf.h"
/*********************
* DEFINES
*********************/
/**********************
* MACROS
**********************/
/**********************
* TYPEDEFS
**********************/
typedef struct {
lv_opa_t opa;
uint16_t angle;
lv_point_t pivot;
uint16_t zoom;
lv_opa_t recolor_opa;
lv_color_t recolor;
lv_blend_mode_t blend_mode;
uint8_t antialias : 1;
} lv_draw_img_dsc_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
void lv_draw_img_dsc_init(lv_draw_img_dsc_t * dsc);
/**
* Draw an image
* @param coords the coordinates of the image
* @param mask the image will be drawn only in this area
* @param src pointer to a lv_color_t array which contains the pixels of the image
* @param style style of the image
* @param angle rotation angle of the image
* @param center rotation center of the image
* @param antialias anti-alias transformations (rotate, zoom) or not
* @param opa_scale scale down all opacities by the factor
*/
void lv_draw_img(const lv_area_t * coords, const lv_area_t * mask, const void * src, lv_draw_img_dsc_t * dsc);
/**
* Get the type of an image source
* @param src pointer to an image source:
* - pointer to an 'lv_img_t' variable (image stored internally and compiled into the code)
* - a path to a file (e.g. "S:/folder/image.bin")
* - or a symbol (e.g. LV_SYMBOL_CLOSE)
* @return type of the image source LV_IMG_SRC_VARIABLE/FILE/SYMBOL/UNKNOWN
*/
lv_img_src_t lv_img_src_get_type(const void * src);
/**
* Get the pixel size of a color format in bits
* @param cf a color format (`LV_IMG_CF_...`)
* @return the pixel size in bits
*/
uint8_t lv_img_cf_get_px_size(lv_img_cf_t cf);
/**
* Check if a color format is chroma keyed or not
* @param cf a color format (`LV_IMG_CF_...`)
* @return true: chroma keyed; false: not chroma keyed
*/
bool lv_img_cf_is_chroma_keyed(lv_img_cf_t cf);
/**
* Check if a color format has alpha channel or not
* @param cf a color format (`LV_IMG_CF_...`)
* @return true: has alpha channel; false: doesn't have alpha channel
*/
bool lv_img_cf_has_alpha(lv_img_cf_t cf);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_TEMPL_H*/

854
nodemcuv2/lv_arduino/src/src/lv_draw/lv_draw_label.c Normal file
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/**
* @file lv_draw_label.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_draw_label.h"
#include "../lv_misc/lv_math.h"
#include "../lv_hal/lv_hal_disp.h"
#include "../lv_core/lv_refr.h"
#include "../lv_misc/lv_bidi.h"
#include "../lv_misc/lv_debug.h"
/*********************
* DEFINES
*********************/
#define LABEL_RECOLOR_PAR_LENGTH 6
#define LV_LABEL_HINT_UPDATE_TH 1024 /*Update the "hint" if the label's y coordinates have changed more then this*/
/**********************
* TYPEDEFS
**********************/
enum {
CMD_STATE_WAIT,
CMD_STATE_PAR,
CMD_STATE_IN,
};
typedef uint8_t cmd_state_t;
/**********************
* STATIC PROTOTYPES
**********************/
LV_ATTRIBUTE_FAST_MEM static void lv_draw_letter(const lv_point_t * pos_p, const lv_area_t * clip_area,
const lv_font_t * font_p,
uint32_t letter, lv_color_t color, lv_opa_t opa, lv_blend_mode_t blend_mode);
LV_ATTRIBUTE_FAST_MEM static void draw_letter_normal(lv_coord_t pos_x, lv_coord_t pos_y, lv_font_glyph_dsc_t * g,
const lv_area_t * clip_area,
const uint8_t * map_p, lv_color_t color, lv_opa_t opa, lv_blend_mode_t blend_mode);
static void draw_letter_subpx(lv_coord_t pos_x, lv_coord_t pos_y, lv_font_glyph_dsc_t * g, const lv_area_t * clip_area,
const uint8_t * map_p, lv_color_t color, lv_opa_t opa, lv_blend_mode_t blend_mode);
static uint8_t hex_char_to_num(char hex);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* GLOBAL VARIABLES
**********************/
const uint8_t _lv_bpp1_opa_table[2] = {0, 255}; /*Opacity mapping with bpp = 1 (Just for compatibility)*/
const uint8_t _lv_bpp2_opa_table[4] = {0, 85, 170, 255}; /*Opacity mapping with bpp = 2*/
const uint8_t _lv_bpp3_opa_table[8] = {0, 36, 73, 109, /*Opacity mapping with bpp = 3*/
146, 182, 219, 255
};
const uint8_t _lv_bpp4_opa_table[16] = {0, 17, 34, 51, /*Opacity mapping with bpp = 4*/
68, 85, 102, 119,
136, 153, 170, 187,
204, 221, 238, 255
};
const uint8_t _lv_bpp8_opa_table[256] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,
112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127,
128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143,
144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,
160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175,
176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207,
208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223,
224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255
};
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
LV_ATTRIBUTE_FAST_MEM void lv_draw_label_dsc_init(lv_draw_label_dsc_t * dsc)
{
_lv_memset_00(dsc, sizeof(lv_draw_label_dsc_t));
dsc->opa = LV_OPA_COVER;
dsc->color = LV_COLOR_BLACK;
dsc->font = LV_THEME_DEFAULT_FONT_NORMAL;
dsc->sel_start = LV_DRAW_LABEL_NO_TXT_SEL;
dsc->sel_end = LV_DRAW_LABEL_NO_TXT_SEL;
dsc->sel_color = LV_COLOR_BLUE;
dsc->bidi_dir = LV_BIDI_DIR_LTR;
}
/**
* Write a text
* @param coords coordinates of the label
* @param mask the label will be drawn only in this area
* @param dsc pointer to draw descriptor
* @param txt `\0` terminated text to write
* @param hint pointer to a `lv_draw_label_hint_t` variable.
* It is managed by the drawer to speed up the drawing of very long texts (thousands of lines).
*/
LV_ATTRIBUTE_FAST_MEM void lv_draw_label(const lv_area_t * coords, const lv_area_t * mask, lv_draw_label_dsc_t * dsc,
const char * txt, lv_draw_label_hint_t * hint)
{
if(dsc->opa <= LV_OPA_MIN) return;
const lv_font_t * font = dsc->font;
int32_t w;
/*No need to waste processor time if string is empty*/
if(txt[0] == '\0') return;
lv_area_t clipped_area;
bool clip_ok = _lv_area_intersect(&clipped_area, coords, mask);
if(!clip_ok) return;
if((dsc->flag & LV_TXT_FLAG_EXPAND) == 0) {
/*Normally use the label's width as width*/
w = lv_area_get_width(coords);
}
else {
/*If EXAPND is enabled then not limit the text's width to the object's width*/
lv_point_t p;
_lv_txt_get_size(&p, txt, dsc->font, dsc->letter_space, dsc->line_space, LV_COORD_MAX,
dsc->flag);
w = p.x;
}
int32_t line_height_font = lv_font_get_line_height(font);
int32_t line_height = line_height_font + dsc->line_space;
/*Init variables for the first line*/
int32_t line_width = 0;
lv_point_t pos;
pos.x = coords->x1;
pos.y = coords->y1;
int32_t x_ofs = 0;
int32_t y_ofs = 0;
x_ofs = dsc->ofs_x;
y_ofs = dsc->ofs_y;
pos.y += y_ofs;
uint32_t line_start = 0;
int32_t last_line_start = -1;
/*Check the hint to use the cached info*/
if(hint && y_ofs == 0 && coords->y1 < 0) {
/*If the label changed too much recalculate the hint.*/
if(LV_MATH_ABS(hint->coord_y - coords->y1) > LV_LABEL_HINT_UPDATE_TH - 2 * line_height) {
hint->line_start = -1;
}
last_line_start = hint->line_start;
}
/*Use the hint if it's valid*/
if(hint && last_line_start >= 0) {
line_start = last_line_start;
pos.y += hint->y;
}
uint32_t line_end = line_start + _lv_txt_get_next_line(&txt[line_start], font, dsc->letter_space, w, dsc->flag);
/*Go the first visible line*/
while(pos.y + line_height_font < mask->y1) {
/*Go to next line*/
line_start = line_end;
line_end += _lv_txt_get_next_line(&txt[line_start], font, dsc->letter_space, w, dsc->flag);
pos.y += line_height;
/*Save at the threshold coordinate*/
if(hint && pos.y >= -LV_LABEL_HINT_UPDATE_TH && hint->line_start < 0) {
hint->line_start = line_start;
hint->y = pos.y - coords->y1;
hint->coord_y = coords->y1;
}
if(txt[line_start] == '\0') return;
}
/*Align to middle*/
if(dsc->flag & LV_TXT_FLAG_CENTER) {
line_width = _lv_txt_get_width(&txt[line_start], line_end - line_start, font, dsc->letter_space, dsc->flag);
pos.x += (lv_area_get_width(coords) - line_width) / 2;
}
/*Align to the right*/
else if(dsc->flag & LV_TXT_FLAG_RIGHT) {
line_width = _lv_txt_get_width(&txt[line_start], line_end - line_start, font, dsc->letter_space, dsc->flag);
pos.x += lv_area_get_width(coords) - line_width;
}
lv_opa_t opa = dsc->opa;
uint32_t sel_start = dsc->sel_start;
uint32_t sel_end = dsc->sel_end;
if(sel_start > sel_end) {
uint32_t tmp = sel_start;
sel_start = sel_end;
sel_end = tmp;
}
lv_draw_line_dsc_t line_dsc;
if((dsc->decor & LV_TEXT_DECOR_UNDERLINE) || (dsc->decor & LV_TEXT_DECOR_STRIKETHROUGH)) {
lv_draw_line_dsc_init(&line_dsc);
line_dsc.color = dsc->color;
line_dsc.width = (dsc->font->line_height + 5) / 10; /*+5 for rounding*/
line_dsc.opa = dsc->opa;
line_dsc.blend_mode = dsc->blend_mode;
}
cmd_state_t cmd_state = CMD_STATE_WAIT;
uint32_t i;
uint32_t par_start = 0;
lv_color_t recolor;
int32_t letter_w;
lv_draw_rect_dsc_t draw_dsc_sel;
lv_draw_rect_dsc_init(&draw_dsc_sel);
draw_dsc_sel.bg_color = dsc->sel_color;
int32_t pos_x_start = pos.x;
/*Write out all lines*/
while(txt[line_start] != '\0') {
pos.x += x_ofs;
/*Write all letter of a line*/
cmd_state = CMD_STATE_WAIT;
i = 0;
#if LV_USE_BIDI
char * bidi_txt = _lv_mem_buf_get(line_end - line_start + 1);
_lv_bidi_process_paragraph(txt + line_start, bidi_txt, line_end - line_start, dsc->bidi_dir, NULL, 0);
#else
const char * bidi_txt = txt + line_start;
#endif
while(i < line_end - line_start) {
uint32_t logical_char_pos = 0;
if(sel_start != 0xFFFF && sel_end != 0xFFFF) {
#if LV_USE_BIDI
logical_char_pos = _lv_txt_encoded_get_char_id(txt, line_start);
uint32_t t = _lv_txt_encoded_get_char_id(bidi_txt, i);
logical_char_pos += _lv_bidi_get_logical_pos(bidi_txt, NULL, line_end - line_start, dsc->bidi_dir, t, NULL);
#else
logical_char_pos = _lv_txt_encoded_get_char_id(txt, line_start + i);
#endif
}
uint32_t letter = _lv_txt_encoded_next(bidi_txt, &i);
uint32_t letter_next = _lv_txt_encoded_next(&bidi_txt[i], NULL);
/*Handle the re-color command*/
if((dsc->flag & LV_TXT_FLAG_RECOLOR) != 0) {
if(letter == (uint32_t)LV_TXT_COLOR_CMD[0]) {
if(cmd_state == CMD_STATE_WAIT) { /*Start char*/
par_start = i;
cmd_state = CMD_STATE_PAR;
continue;
}
else if(cmd_state == CMD_STATE_PAR) { /*Other start char in parameter escaped cmd. char */
cmd_state = CMD_STATE_WAIT;
}
else if(cmd_state == CMD_STATE_IN) { /*Command end */
cmd_state = CMD_STATE_WAIT;
continue;
}
}
/*Skip the color parameter and wait the space after it*/
if(cmd_state == CMD_STATE_PAR) {
if(letter == ' ') {
/*Get the parameter*/
if(i - par_start == LABEL_RECOLOR_PAR_LENGTH + 1) {
char buf[LABEL_RECOLOR_PAR_LENGTH + 1];
_lv_memcpy_small(buf, &bidi_txt[par_start], LABEL_RECOLOR_PAR_LENGTH);
buf[LABEL_RECOLOR_PAR_LENGTH] = '\0';
int r, g, b;
r = (hex_char_to_num(buf[0]) << 4) + hex_char_to_num(buf[1]);
g = (hex_char_to_num(buf[2]) << 4) + hex_char_to_num(buf[3]);
b = (hex_char_to_num(buf[4]) << 4) + hex_char_to_num(buf[5]);
recolor = lv_color_make(r, g, b);
}
else {
recolor.full = dsc->color.full;
}
cmd_state = CMD_STATE_IN; /*After the parameter the text is in the command*/
}
continue;
}
}
lv_color_t color = dsc->color;
if(cmd_state == CMD_STATE_IN) color = recolor;
letter_w = lv_font_get_glyph_width(font, letter, letter_next);
if(sel_start != 0xFFFF && sel_end != 0xFFFF) {
if(logical_char_pos >= sel_start && logical_char_pos < sel_end) {
lv_area_t sel_coords;
sel_coords.x1 = pos.x;
sel_coords.y1 = pos.y;
sel_coords.x2 = pos.x + letter_w + dsc->letter_space - 1;
sel_coords.y2 = pos.y + line_height - 1;
lv_draw_rect(&sel_coords, mask, &draw_dsc_sel);
}
}
lv_draw_letter(&pos, mask, font, letter, color, opa, dsc->blend_mode);
if(letter_w > 0) {
pos.x += letter_w + dsc->letter_space;
}
}
if(dsc->decor & LV_TEXT_DECOR_STRIKETHROUGH) {
lv_point_t p1;
lv_point_t p2;
p1.x = pos_x_start;
p1.y = pos.y + (dsc->font->line_height / 2) + line_dsc.width / 2;
p2.x = pos.x;
p2.y = p1.y;
lv_draw_line(&p1, &p2, mask, &line_dsc);
}
if(dsc->decor & LV_TEXT_DECOR_UNDERLINE) {
lv_point_t p1;
lv_point_t p2;
p1.x = pos_x_start;
p1.y = pos.y + dsc->font->line_height - dsc->font->base_line + line_dsc.width / 2 + 1;
p2.x = pos.x;
p2.y = p1.y;
lv_draw_line(&p1, &p2, mask, &line_dsc);
}
#if LV_USE_BIDI
_lv_mem_buf_release(bidi_txt);
bidi_txt = NULL;
#endif
/*Go to next line*/
line_start = line_end;
line_end += _lv_txt_get_next_line(&txt[line_start], font, dsc->letter_space, w, dsc->flag);
pos.x = coords->x1;
/*Align to middle*/
if(dsc->flag & LV_TXT_FLAG_CENTER) {
line_width =
_lv_txt_get_width(&txt[line_start], line_end - line_start, font, dsc->letter_space, dsc->flag);
pos.x += (lv_area_get_width(coords) - line_width) / 2;
}
/*Align to the right*/
else if(dsc->flag & LV_TXT_FLAG_RIGHT) {
line_width =
_lv_txt_get_width(&txt[line_start], line_end - line_start, font, dsc->letter_space, dsc->flag);
pos.x += lv_area_get_width(coords) - line_width;
}
/*Go the next line position*/
pos.y += line_height;
if(pos.y > mask->y2) return;
}
LV_ASSERT_MEM_INTEGRITY();
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Draw a letter in the Virtual Display Buffer
* @param pos_p left-top coordinate of the latter
* @param mask_p the letter will be drawn only on this area (truncated to VDB area)
* @param font_p pointer to font
* @param letter a letter to draw
* @param color color of letter
* @param opa opacity of letter (0..255)
*/
LV_ATTRIBUTE_FAST_MEM static void lv_draw_letter(const lv_point_t * pos_p, const lv_area_t * clip_area,
const lv_font_t * font_p,
uint32_t letter,
lv_color_t color, lv_opa_t opa, lv_blend_mode_t blend_mode)
{
if(opa < LV_OPA_MIN) return;
if(opa > LV_OPA_MAX) opa = LV_OPA_COVER;
if(font_p == NULL) {
LV_LOG_WARN("lv_draw_letter: font is NULL");
return;
}
lv_font_glyph_dsc_t g;
bool g_ret = lv_font_get_glyph_dsc(font_p, &g, letter, '\0');
if(g_ret == false) {
/* Add waring if the dsc is not found
* but do not print warning for non printable ASCII chars (e.g. '\n')*/
if(letter >= 0x20) {
LV_LOG_WARN("lv_draw_letter: glyph dsc. not found");
}
return;
}
/* Don't draw anything if the character is empty. E.g. space */
if((g.box_h == 0) && (g.box_w == 0)) return;
int32_t pos_x = pos_p->x + g.ofs_x;
int32_t pos_y = pos_p->y + (font_p->line_height - font_p->base_line) - g.box_h - g.ofs_y;
/*If the letter is completely out of mask don't draw it */
if(pos_x + g.box_w < clip_area->x1 ||
pos_x > clip_area->x2 ||
pos_y + g.box_h < clip_area->y1 ||
pos_y > clip_area->y2) {
return;
}
const uint8_t * map_p = lv_font_get_glyph_bitmap(font_p, letter);
if(map_p == NULL) {
LV_LOG_WARN("lv_draw_letter: character's bitmap not found");
return;
}
if(font_p->subpx) {
draw_letter_subpx(pos_x, pos_y, &g, clip_area, map_p, color, opa, blend_mode);
}
else {
draw_letter_normal(pos_x, pos_y, &g, clip_area, map_p, color, opa, blend_mode);
}
}
LV_ATTRIBUTE_FAST_MEM static void draw_letter_normal(lv_coord_t pos_x, lv_coord_t pos_y, lv_font_glyph_dsc_t * g,
const lv_area_t * clip_area,
const uint8_t * map_p, lv_color_t color, lv_opa_t opa, lv_blend_mode_t blend_mode)
{
const uint8_t * bpp_opa_table_p;
uint32_t bitmask_init;
uint32_t bitmask;
uint32_t bpp = g->bpp;
uint32_t shades;
if(bpp == 3) bpp = 4;
switch(bpp) {
case 1:
bpp_opa_table_p = _lv_bpp1_opa_table;
bitmask_init = 0x80;
shades = 2;
break;
case 2:
bpp_opa_table_p = _lv_bpp2_opa_table;
bitmask_init = 0xC0;
shades = 4;
break;
case 4:
bpp_opa_table_p = _lv_bpp4_opa_table;
bitmask_init = 0xF0;
shades = 16;
break;
case 8:
bpp_opa_table_p = _lv_bpp8_opa_table;
bitmask_init = 0xFF;
shades = 256;
break; /*No opa table, pixel value will be used directly*/
default:
LV_LOG_WARN("lv_draw_letter: invalid bpp");
return; /*Invalid bpp. Can't render the letter*/
}
static lv_opa_t opa_table[256];
static lv_opa_t prev_opa = LV_OPA_TRANSP;
static uint32_t prev_bpp = 0;
if(opa < LV_OPA_MAX) {
if(prev_opa != opa || prev_bpp != bpp) {
uint32_t i;
for(i = 0; i < shades; i++) {
opa_table[i] = bpp_opa_table_p[i] == LV_OPA_COVER ? opa : ((bpp_opa_table_p[i] * opa) >> 8);
}
}
bpp_opa_table_p = opa_table;
prev_opa = opa;
prev_bpp = bpp;
}
int32_t col, row;
int32_t box_w = g->box_w;
int32_t box_h = g->box_h;
int32_t width_bit = box_w * bpp; /*Letter width in bits*/
/* Calculate the col/row start/end on the map*/
int32_t col_start = pos_x >= clip_area->x1 ? 0 : clip_area->x1 - pos_x;
int32_t col_end = pos_x + box_w <= clip_area->x2 ? box_w : clip_area->x2 - pos_x + 1;
int32_t row_start = pos_y >= clip_area->y1 ? 0 : clip_area->y1 - pos_y;
int32_t row_end = pos_y + box_h <= clip_area->y2 ? box_h : clip_area->y2 - pos_y + 1;
/*Move on the map too*/
uint32_t bit_ofs = (row_start * width_bit) + (col_start * bpp);
map_p += bit_ofs >> 3;
uint8_t letter_px;
uint32_t col_bit;
col_bit = bit_ofs & 0x7; /* "& 0x7" equals to "% 8" just faster */
uint32_t mask_buf_size = box_w * box_h > LV_HOR_RES_MAX ? LV_HOR_RES_MAX : box_w * box_h;
lv_opa_t * mask_buf = _lv_mem_buf_get(mask_buf_size);
int32_t mask_p = 0;
lv_area_t fill_area;
fill_area.x1 = col_start + pos_x;
fill_area.x2 = col_end + pos_x - 1;
fill_area.y1 = row_start + pos_y;
fill_area.y2 = fill_area.y1;
uint8_t other_mask_cnt = lv_draw_mask_get_cnt();
uint32_t col_bit_max = 8 - bpp;
uint32_t col_bit_row_ofs = (box_w + col_start - col_end) * bpp;
for(row = row_start ; row < row_end; row++) {
int32_t mask_p_start = mask_p;
bitmask = bitmask_init >> col_bit;
for(col = col_start; col < col_end; col++) {
/*Load the pixel's opacity into the mask*/
letter_px = (*map_p & bitmask) >> (col_bit_max - col_bit);
if(letter_px) {
mask_buf[mask_p] = bpp_opa_table_p[letter_px];
}
else {
mask_buf[mask_p] = 0;
}
/*Go to the next column*/
if(col_bit < col_bit_max) {
col_bit += bpp;
bitmask = bitmask >> bpp;
}
else {
col_bit = 0;
bitmask = bitmask_init;
map_p++;
}
/*Next mask byte*/
mask_p++;
}
/*Apply masks if any*/
if(other_mask_cnt) {
lv_draw_mask_res_t mask_res = lv_draw_mask_apply(mask_buf + mask_p_start, fill_area.x1, fill_area.y2,
lv_area_get_width(&fill_area));
if(mask_res == LV_DRAW_MASK_RES_TRANSP) {
_lv_memset_00(mask_buf + mask_p_start, lv_area_get_width(&fill_area));
}
}
if((uint32_t) mask_p + (col_end - col_start) < mask_buf_size) {
fill_area.y2 ++;
}
else {
_lv_blend_fill(clip_area, &fill_area,
color, mask_buf, LV_DRAW_MASK_RES_CHANGED, LV_OPA_COVER,
blend_mode);
fill_area.y1 = fill_area.y2 + 1;
fill_area.y2 = fill_area.y1;
mask_p = 0;
}
col_bit += col_bit_row_ofs;
map_p += (col_bit >> 3);
col_bit = col_bit & 0x7;
}
/*Flush the last part*/
if(fill_area.y1 != fill_area.y2) {
fill_area.y2--;
_lv_blend_fill(clip_area, &fill_area,
color, mask_buf, LV_DRAW_MASK_RES_CHANGED, LV_OPA_COVER,
blend_mode);
mask_p = 0;
}
_lv_mem_buf_release(mask_buf);
}
static void draw_letter_subpx(lv_coord_t pos_x, lv_coord_t pos_y, lv_font_glyph_dsc_t * g, const lv_area_t * clip_area,
const uint8_t * map_p, lv_color_t color, lv_opa_t opa, lv_blend_mode_t blend_mode)
{
const uint8_t * bpp_opa_table;
uint32_t bitmask_init;
uint32_t bitmask;
uint32_t bpp = g->bpp;
if(bpp == 3) bpp = 4;
switch(bpp) {
case 1:
bpp_opa_table = _lv_bpp1_opa_table;
bitmask_init = 0x80;
break;
case 2:
bpp_opa_table = _lv_bpp2_opa_table;
bitmask_init = 0xC0;
break;
case 4:
bpp_opa_table = _lv_bpp4_opa_table;
bitmask_init = 0xF0;
break;
case 8:
bpp_opa_table = _lv_bpp8_opa_table;
bitmask_init = 0xFF;
break; /*No opa table, pixel value will be used directly*/
default:
LV_LOG_WARN("lv_draw_letter: invalid bpp not found");
return; /*Invalid bpp. Can't render the letter*/
}
int32_t col, row;
int32_t box_w = g->box_w;
int32_t box_h = g->box_h;
int32_t width_bit = box_w * bpp; /*Letter width in bits*/
/* Calculate the col/row start/end on the map*/
int32_t col_start = pos_x >= clip_area->x1 ? 0 : (clip_area->x1 - pos_x) * 3;
int32_t col_end = pos_x + box_w / 3 <= clip_area->x2 ? box_w : (clip_area->x2 - pos_x + 1) * 3;
int32_t row_start = pos_y >= clip_area->y1 ? 0 : clip_area->y1 - pos_y;
int32_t row_end = pos_y + box_h <= clip_area->y2 ? box_h : clip_area->y2 - pos_y + 1;
/*Move on the map too*/
int32_t bit_ofs = (row_start * width_bit) + (col_start * bpp);
map_p += bit_ofs >> 3;
uint8_t letter_px;
lv_opa_t px_opa;
int32_t col_bit;
col_bit = bit_ofs & 0x7; /* "& 0x7" equals to "% 8" just faster */
int32_t mask_buf_size = box_w * box_h > LV_HOR_RES_MAX ? LV_HOR_RES_MAX : g->box_w * g->box_h;
lv_opa_t * mask_buf = _lv_mem_buf_get(mask_buf_size);
int32_t mask_p = 0;
lv_color_t * color_buf = _lv_mem_buf_get(mask_buf_size * sizeof(lv_color_t));
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
lv_disp_buf_t * vdb = lv_disp_get_buf(disp);
int32_t vdb_width = lv_area_get_width(&vdb->area);
lv_color_t * vdb_buf_tmp = vdb->buf_act;
/*Set a pointer on VDB to the first pixel of the letter*/
vdb_buf_tmp += ((pos_y - vdb->area.y1) * vdb_width) + pos_x - vdb->area.x1;
/*If the letter is partially out of mask the move there on VDB*/
vdb_buf_tmp += (row_start * vdb_width) + col_start / 3;
lv_area_t map_area;
map_area.x1 = col_start / 3 + pos_x;
map_area.x2 = col_end / 3 + pos_x - 1;
map_area.y1 = row_start + pos_y;
map_area.y2 = map_area.y1;
uint8_t other_mask_cnt = lv_draw_mask_get_cnt();
uint8_t font_rgb[3];
#if LV_COLOR_16_SWAP == 0
uint8_t txt_rgb[3] = {color.ch.red, color.ch.green, color.ch.blue};
#else
uint8_t txt_rgb[3] = {color.ch.red, (color.ch.green_h << 3) + color.ch.green_l, color.ch.blue};
#endif
for(row = row_start ; row < row_end; row++) {
uint32_t subpx_cnt = 0;
bitmask = bitmask_init >> col_bit;
int32_t mask_p_start = mask_p;
for(col = col_start; col < col_end; col++) {
/*Load the pixel's opacity into the mask*/
letter_px = (*map_p & bitmask) >> (8 - col_bit - bpp);
if(letter_px != 0) {
if(opa == LV_OPA_COVER) {
px_opa = bpp == 8 ? letter_px : bpp_opa_table[letter_px];
}
else {
px_opa = bpp == 8 ? (uint32_t)((uint32_t)letter_px * opa) >> 8
: (uint32_t)((uint32_t)bpp_opa_table[letter_px] * opa) >> 8;
}
}
else {
px_opa = 0;
}
font_rgb[subpx_cnt] = px_opa;
subpx_cnt ++;
if(subpx_cnt == 3) {
subpx_cnt = 0;
lv_color_t res_color;
#if LV_COLOR_16_SWAP == 0
uint8_t bg_rgb[3] = {vdb_buf_tmp->ch.red, vdb_buf_tmp->ch.green, vdb_buf_tmp->ch.blue};
#else
uint8_t bg_rgb[3] = {vdb_buf_tmp->ch.red,
(vdb_buf_tmp->ch.green_h << 3) + vdb_buf_tmp->ch.green_l,
vdb_buf_tmp->ch.blue
};
#endif
#if LV_FONT_SUBPX_BGR
res_color.ch.blue = (uint32_t)((uint32_t)txt_rgb[0] * font_rgb[0] + (bg_rgb[0] * (255 - font_rgb[0]))) >> 8;
res_color.ch.red = (uint32_t)((uint32_t)txt_rgb[2] * font_rgb[2] + (bg_rgb[2] * (255 - font_rgb[2]))) >> 8;
#else
res_color.ch.red = (uint32_t)((uint16_t)txt_rgb[0] * font_rgb[0] + (bg_rgb[0] * (255 - font_rgb[0]))) >> 8;
res_color.ch.blue = (uint32_t)((uint16_t)txt_rgb[2] * font_rgb[2] + (bg_rgb[2] * (255 - font_rgb[2]))) >> 8;
#endif
#if LV_COLOR_16_SWAP == 0
res_color.ch.green = (uint32_t)((uint32_t)txt_rgb[1] * font_rgb[1] + (bg_rgb[1] * (255 - font_rgb[1]))) >> 8;
#else
uint8_t green = (uint32_t)((uint32_t)txt_rgb[1] * font_rgb[1] + (bg_rgb[1] * (255 - font_rgb[1]))) >> 8;
res_color.ch.green_h = green >> 3;
res_color.ch.green_l = green & 0x7;
#endif
#if LV_COLOR_DEPTH == 32
res_color.ch.alpha = 0xff;
#endif
if(font_rgb[0] == 0 && font_rgb[1] == 0 && font_rgb[2] == 0) mask_buf[mask_p] = LV_OPA_TRANSP;
else mask_buf[mask_p] = LV_OPA_COVER;
color_buf[mask_p] = res_color;
/*Next mask byte*/
mask_p++;
vdb_buf_tmp++;
}
/*Go to the next column*/
if(col_bit < (int32_t) (8 - bpp)) {
col_bit += bpp;
bitmask = bitmask >> bpp;
}
else {
col_bit = 0;
bitmask = bitmask_init;
map_p++;
}
}
/*Apply masks if any*/
if(other_mask_cnt) {
lv_draw_mask_res_t mask_res = lv_draw_mask_apply(mask_buf + mask_p_start, map_area.x1, map_area.y2,
lv_area_get_width(&map_area));
if(mask_res == LV_DRAW_MASK_RES_TRANSP) {
_lv_memset_00(mask_buf + mask_p_start, lv_area_get_width(&map_area));
}
}
if((int32_t) mask_p + (col_end - col_start) < mask_buf_size) {
map_area.y2 ++;
}
else {
_lv_blend_map(clip_area, &map_area, color_buf, mask_buf, LV_DRAW_MASK_RES_CHANGED, opa, blend_mode);
map_area.y1 = map_area.y2 + 1;
map_area.y2 = map_area.y1;
mask_p = 0;
}
col_bit += ((box_w - col_end) + col_start) * bpp;
map_p += (col_bit >> 3);
col_bit = col_bit & 0x7;
/*Next row in VDB*/
vdb_buf_tmp += vdb_width - (col_end - col_start) / 3;
}
/*Flush the last part*/
if(map_area.y1 != map_area.y2) {
map_area.y2--;
_lv_blend_map(clip_area, &map_area, color_buf, mask_buf, LV_DRAW_MASK_RES_CHANGED, opa, blend_mode);
}
_lv_mem_buf_release(mask_buf);
_lv_mem_buf_release(color_buf);
}
/**
* Convert a hexadecimal characters to a number (0..15)
* @param hex Pointer to a hexadecimal character (0..9, A..F)
* @return the numerical value of `hex` or 0 on error
*/
static uint8_t hex_char_to_num(char hex)
{
uint8_t result = 0;
if(hex >= '0' && hex <= '9') {
result = hex - '0';
}
else {
if(hex >= 'a') hex -= 'a' - 'A'; /*Convert to upper case*/
switch(hex) {
case 'A':
result = 10;
break;
case 'B':
result = 11;
break;
case 'C':
result = 12;
break;
case 'D':
result = 13;
break;
case 'E':
result = 14;
break;
case 'F':
result = 15;
break;
default:
result = 0;
break;
}
}
return result;
}

101
nodemcuv2/lv_arduino/src/src/lv_draw/lv_draw_label.h Normal file
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/**
* @file lv_draw_label.h
*
*/
#ifndef LV_DRAW_LABEL_H
#define LV_DRAW_LABEL_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_misc/lv_bidi.h"
#include "../lv_misc/lv_txt.h"
#include "../lv_core/lv_style.h"
/*********************
* DEFINES
*********************/
#define LV_DRAW_LABEL_NO_TXT_SEL (0xFFFF)
/**********************
* TYPEDEFS
**********************/
typedef struct {
lv_color_t color;
lv_color_t sel_color;
const lv_font_t * font;
lv_opa_t opa;
lv_style_int_t line_space;
lv_style_int_t letter_space;
uint32_t sel_start;
uint32_t sel_end;
lv_coord_t ofs_x;
lv_coord_t ofs_y;
lv_bidi_dir_t bidi_dir;
lv_txt_flag_t flag;
lv_text_decor_t decor;
lv_blend_mode_t blend_mode;
} lv_draw_label_dsc_t;
/** Store some info to speed up drawing of very large texts
* It takes a lot of time to get the first visible character because
* all the previous characters needs to be checked to calculate the positions.
* This structure stores an earlier (e.g. at -1000 px) coordinate and the index of that line.
* Therefore the calculations can start from here.*/
typedef struct {
/** Index of the line at `y` coordinate*/
int32_t line_start;
/** Give the `y` coordinate of the first letter at `line start` index. Relative to the label's coordinates*/
int32_t y;
/** The 'y1' coordinate of the label when the hint was saved.
* Used to invalidate the hint if the label has moved too much. */
int32_t coord_y;
} lv_draw_label_hint_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
//! @cond Doxygen_Suppress
LV_ATTRIBUTE_FAST_MEM void lv_draw_label_dsc_init(lv_draw_label_dsc_t * dsc);
/**
* Write a text
* @param coords coordinates of the label
* @param mask the label will be drawn only in this area
* @param dsc pointer to draw descriptor
* @param txt `\0` terminated text to write
* @param hint pointer to a `lv_draw_label_hint_t` variable.
* It is managed by the drawer to speed up the drawing of very long texts (thousands of lines).
*/
LV_ATTRIBUTE_FAST_MEM void lv_draw_label(const lv_area_t * coords, const lv_area_t * mask, lv_draw_label_dsc_t * dsc,
const char * txt, lv_draw_label_hint_t * hint);
//! @endcond
/***********************
* GLOBAL VARIABLES
***********************/
extern const uint8_t _lv_bpp2_opa_table[];
extern const uint8_t _lv_bpp3_opa_table[];
extern const uint8_t _lv_bpp1_opa_table[];
extern const uint8_t _lv_bpp4_opa_table[];
extern const uint8_t _lv_bpp8_opa_table[];
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_DRAW_LABEL_H*/

481
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/**
* @file lv_draw_line.c
*
*/
/*********************
* INCLUDES
*********************/
#include <stdio.h>
#include <stdbool.h>
#include "lv_draw_mask.h"
#include "lv_draw_blend.h"
#include "../lv_core/lv_refr.h"
#include "../lv_misc/lv_math.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
LV_ATTRIBUTE_FAST_MEM static void draw_line_skew(const lv_point_t * point1, const lv_point_t * point2,
const lv_area_t * clip,
lv_draw_line_dsc_t * dsc);
LV_ATTRIBUTE_FAST_MEM static void draw_line_hor(const lv_point_t * point1, const lv_point_t * point2,
const lv_area_t * clip,
lv_draw_line_dsc_t * dsc);
LV_ATTRIBUTE_FAST_MEM static void draw_line_ver(const lv_point_t * point1, const lv_point_t * point2,
const lv_area_t * clip,
lv_draw_line_dsc_t * dsc);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
LV_ATTRIBUTE_FAST_MEM void lv_draw_line_dsc_init(lv_draw_line_dsc_t * dsc)
{
_lv_memset_00(dsc, sizeof(lv_draw_line_dsc_t));
dsc->width = 1;
dsc->opa = LV_OPA_COVER;
dsc->color = LV_COLOR_BLACK;
}
/**
* Draw a line
* @param point1 first point of the line
* @param point2 second point of the line
* @param mask the line will be drawn only on this area
* @param style pointer to a line's style
* @param opa_scale scale down all opacities by the factor
*/
LV_ATTRIBUTE_FAST_MEM void lv_draw_line(const lv_point_t * point1, const lv_point_t * point2, const lv_area_t * clip,
lv_draw_line_dsc_t * dsc)
{
if(dsc->width == 0) return;
if(dsc->opa <= LV_OPA_MIN) return;
if(point1->x == point2->x && point1->y == point2->y) return;
lv_area_t clip_line;
clip_line.x1 = LV_MATH_MIN(point1->x, point2->x) - dsc->width / 2;
clip_line.x2 = LV_MATH_MAX(point1->x, point2->x) + dsc->width / 2;
clip_line.y1 = LV_MATH_MIN(point1->y, point2->y) - dsc->width / 2;
clip_line.y2 = LV_MATH_MAX(point1->y, point2->y) + dsc->width / 2;
bool is_common;
is_common = _lv_area_intersect(&clip_line, &clip_line, clip);
if(!is_common) return;
if(point1->y == point2->y) draw_line_hor(point1, point2, &clip_line, dsc);
else if(point1->x == point2->x) draw_line_ver(point1, point2, &clip_line, dsc);
else draw_line_skew(point1, point2, &clip_line, dsc);
if(dsc->round_end || dsc->round_start) {
lv_draw_rect_dsc_t cir_dsc;
lv_draw_rect_dsc_init(&cir_dsc);
cir_dsc.bg_color = dsc->color;
cir_dsc.radius = LV_RADIUS_CIRCLE;
cir_dsc.bg_opa = dsc->opa;
int32_t r = (dsc->width >> 1);
int32_t r_corr = (dsc->width & 1) ? 0 : 1;
lv_area_t cir_area;
if(dsc->round_start) {
cir_area.x1 = point1->x - r;
cir_area.y1 = point1->y - r;
cir_area.x2 = point1->x + r - r_corr;
cir_area.y2 = point1->y + r - r_corr ;
lv_draw_rect(&cir_area, clip, &cir_dsc);
}
if(dsc->round_end) {
cir_area.x1 = point2->x - r;
cir_area.y1 = point2->y - r;
cir_area.x2 = point2->x + r - r_corr;
cir_area.y2 = point2->y + r - r_corr ;
lv_draw_rect(&cir_area, clip, &cir_dsc);
}
}
}
/**********************
* STATIC FUNCTIONS
**********************/
LV_ATTRIBUTE_FAST_MEM static void draw_line_hor(const lv_point_t * point1, const lv_point_t * point2,
const lv_area_t * clip,
lv_draw_line_dsc_t * dsc)
{
lv_opa_t opa = dsc->opa;
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
lv_disp_buf_t * vdb = lv_disp_get_buf(disp);
const lv_area_t * disp_area = &vdb->area;
int32_t w = dsc->width - 1;
int32_t w_half0 = w >> 1;
int32_t w_half1 = w_half0 + (w & 0x1); /*Compensate rounding error*/
bool dashed = dsc->dash_gap && dsc->dash_width ? true : false;
bool simple_mode = true;
if(lv_draw_mask_get_cnt()) simple_mode = false;
else if(dashed) simple_mode = false;
lv_area_t draw_area;
draw_area.x1 = LV_MATH_MIN(point1->x, point2->x);
draw_area.x2 = LV_MATH_MAX(point1->x, point2->x) - 1;
draw_area.y1 = point1->y - w_half1;
draw_area.y2 = point1->y + w_half0;
/*If there is no mask then simply draw a rectangle*/
if(simple_mode) {
_lv_blend_fill(clip, &draw_area,
dsc->color, NULL, LV_DRAW_MASK_RES_FULL_COVER, opa,
dsc->blend_mode);
}
/*If there other mask apply it*/
else {
/* Get clipped fill area which is the real draw area.
* It is always the same or inside `fill_area` */
bool is_common;
is_common = _lv_area_intersect(&draw_area, clip, &draw_area);
if(!is_common) return;
/* Now `draw_area` has absolute coordinates.
* Make it relative to `disp_area` to simplify draw to `disp_buf`*/
draw_area.x1 -= disp_area->x1;
draw_area.y1 -= disp_area->y1;
draw_area.x2 -= disp_area->x1;
draw_area.y2 -= disp_area->y1;
int32_t draw_area_w = lv_area_get_width(&draw_area);
lv_area_t fill_area;
fill_area.x1 = draw_area.x1 + disp_area->x1;
fill_area.x2 = draw_area.x2 + disp_area->x1;
fill_area.y1 = draw_area.y1 + disp_area->y1;
fill_area.y2 = fill_area.y1;
lv_style_int_t dash_start = 0;
if(dashed) {
dash_start = (vdb->area.x1 + draw_area.x1) % (dsc->dash_gap + dsc->dash_width);
}
lv_opa_t * mask_buf = _lv_mem_buf_get(draw_area_w);
int32_t h;
for(h = draw_area.y1; h <= draw_area.y2; h++) {
_lv_memset_ff(mask_buf, draw_area_w);
lv_draw_mask_res_t mask_res = lv_draw_mask_apply(mask_buf, vdb->area.x1 + draw_area.x1, vdb->area.y1 + h, draw_area_w);
if(dashed) {
if(mask_res != LV_DRAW_MASK_RES_TRANSP) {
lv_style_int_t dash_cnt = dash_start;
lv_coord_t i;
for(i = 0; i < draw_area_w; i++, dash_cnt++) {
if(dash_cnt <= dsc->dash_width) {
int16_t diff = dsc->dash_width - dash_cnt;
i += diff;
dash_cnt += diff;
}
else if(dash_cnt >= dsc->dash_gap + dsc->dash_width) {
dash_cnt = 0;
}
else {
mask_buf[i] = 0x00;
}
}
mask_res = LV_DRAW_MASK_RES_CHANGED;
}
}
_lv_blend_fill(clip, &fill_area,
dsc->color, mask_buf, mask_res, dsc->opa,
dsc->blend_mode);
fill_area.y1++;
fill_area.y2++;
}
_lv_mem_buf_release(mask_buf);
}
}
LV_ATTRIBUTE_FAST_MEM static void draw_line_ver(const lv_point_t * point1, const lv_point_t * point2,
const lv_area_t * clip,
lv_draw_line_dsc_t * dsc)
{
lv_opa_t opa = dsc->opa;
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
lv_disp_buf_t * vdb = lv_disp_get_buf(disp);
const lv_area_t * disp_area = &vdb->area;
int32_t w = dsc->width - 1;
int32_t w_half0 = w >> 1;
int32_t w_half1 = w_half0 + (w & 0x1); /*Compensate rounding error*/
bool dashed = dsc->dash_gap && dsc->dash_width ? true : false;
bool simple_mode = true;
if(lv_draw_mask_get_cnt()) simple_mode = false;
else if(dashed) simple_mode = false;
lv_area_t draw_area;
draw_area.x1 = point1->x - w_half1;
draw_area.x2 = point1->x + w_half0;
draw_area.y1 = LV_MATH_MIN(point1->y, point2->y);
draw_area.y2 = LV_MATH_MAX(point1->y, point2->y) - 1;
/*If there is no mask then simply draw a rectangle*/
if(simple_mode) {
_lv_blend_fill(clip, &draw_area,
dsc->color, NULL, LV_DRAW_MASK_RES_FULL_COVER, opa,
dsc->blend_mode);
}
/*If there other mask apply it*/
else {
/* Get clipped fill area which is the real draw area.
* It is always the same or inside `fill_area` */
bool is_common;
is_common = _lv_area_intersect(&draw_area, clip, &draw_area);
if(!is_common) return;
/* Now `draw_area` has absolute coordinates.
* Make it relative to `disp_area` to simplify draw to `disp_buf`*/
draw_area.x1 -= vdb->area.x1;
draw_area.y1 -= vdb->area.y1;
draw_area.x2 -= vdb->area.x1;
draw_area.y2 -= vdb->area.y1;
int32_t draw_area_w = lv_area_get_width(&draw_area);
lv_area_t fill_area;
fill_area.x1 = draw_area.x1 + disp_area->x1;
fill_area.x2 = draw_area.x2 + disp_area->x1;
fill_area.y1 = draw_area.y1 + disp_area->y1;
fill_area.y2 = fill_area.y1;
lv_opa_t * mask_buf = _lv_mem_buf_get(draw_area_w);
lv_style_int_t dash_start = 0;
if(dashed) {
dash_start = (vdb->area.y1 + draw_area.y1) % (dsc->dash_gap + dsc->dash_width);
}
lv_style_int_t dash_cnt = dash_start;
int32_t h;
for(h = draw_area.y1; h <= draw_area.y2; h++) {
_lv_memset_ff(mask_buf, draw_area_w);
lv_draw_mask_res_t mask_res = lv_draw_mask_apply(mask_buf, vdb->area.x1 + draw_area.x1, vdb->area.y1 + h, draw_area_w);
if(dashed) {
if(mask_res != LV_DRAW_MASK_RES_TRANSP) {
if(dash_cnt > dsc->dash_width) {
mask_res = LV_DRAW_MASK_RES_TRANSP;
}
if(dash_cnt >= dsc->dash_gap + dsc->dash_width) {
dash_cnt = 0;
}
}
dash_cnt ++;
}
_lv_blend_fill(clip, &fill_area,
dsc->color, mask_buf, mask_res, dsc->opa,
LV_BLEND_MODE_NORMAL);
fill_area.y1++;
fill_area.y2++;
}
_lv_mem_buf_release(mask_buf);
}
}
LV_ATTRIBUTE_FAST_MEM static void draw_line_skew(const lv_point_t * point1, const lv_point_t * point2,
const lv_area_t * clip,
lv_draw_line_dsc_t * dsc)
{
/*Keep the great y in p1*/
lv_point_t p1;
lv_point_t p2;
if(point1->y < point2->y) {
p1.y = point1->y;
p2.y = point2->y;
p1.x = point1->x;
p2.x = point2->x;
}
else {
p1.y = point2->y;
p2.y = point1->y;
p1.x = point2->x;
p2.x = point1->x;
}
int32_t xdiff = p2.x - p1.x;
int32_t ydiff = p2.y - p1.y;
bool flat = LV_MATH_ABS(xdiff) > LV_MATH_ABS(ydiff) ? true : false;
static const uint8_t wcorr[] = {
128, 128, 128, 129, 129, 130, 130, 131,
132, 133, 134, 135, 137, 138, 140, 141,
143, 145, 147, 149, 151, 153, 155, 158,
160, 162, 165, 167, 170, 173, 175, 178,
181,
};
int32_t w = dsc->width;
int32_t wcorr_i = 0;
if(flat) wcorr_i = (LV_MATH_ABS(ydiff) << 5) / LV_MATH_ABS(xdiff);
else wcorr_i = (LV_MATH_ABS(xdiff) << 5) / LV_MATH_ABS(ydiff);
w = (w * wcorr[wcorr_i] + 63) >> 7; /*+ 63 for rounding*/
int32_t w_half0 = w >> 1;
int32_t w_half1 = w_half0 + (w & 0x1); /*Compensate rounding error*/
lv_area_t draw_area;
draw_area.x1 = LV_MATH_MIN(p1.x, p2.x) - w;
draw_area.x2 = LV_MATH_MAX(p1.x, p2.x) + w;
draw_area.y1 = LV_MATH_MIN(p1.y, p2.y) - w;
draw_area.y2 = LV_MATH_MAX(p1.y, p2.y) + w;
/* Get the union of `coords` and `clip`*/
/* `clip` is already truncated to the `vdb` size
* in 'lv_refr_area' function */
bool is_common = _lv_area_intersect(&draw_area, &draw_area, clip);
if(is_common == false) return;
lv_draw_mask_line_param_t mask_left_param;
lv_draw_mask_line_param_t mask_right_param;
lv_draw_mask_line_param_t mask_top_param;
lv_draw_mask_line_param_t mask_bottom_param;
if(flat) {
if(xdiff > 0) {
lv_draw_mask_line_points_init(&mask_left_param, p1.x, p1.y - w_half0, p2.x, p2.y - w_half0,
LV_DRAW_MASK_LINE_SIDE_LEFT);
lv_draw_mask_line_points_init(&mask_right_param, p1.x, p1.y + w_half1, p2.x, p2.y + w_half1,
LV_DRAW_MASK_LINE_SIDE_RIGHT);
}
else {
lv_draw_mask_line_points_init(&mask_left_param, p1.x, p1.y + w_half1, p2.x, p2.y + w_half1,
LV_DRAW_MASK_LINE_SIDE_LEFT);
lv_draw_mask_line_points_init(&mask_right_param, p1.x, p1.y - w_half0, p2.x, p2.y - w_half0,
LV_DRAW_MASK_LINE_SIDE_RIGHT);
}
}
else {
lv_draw_mask_line_points_init(&mask_left_param, p1.x + w_half1, p1.y, p2.x + w_half1, p2.y,
LV_DRAW_MASK_LINE_SIDE_LEFT);
lv_draw_mask_line_points_init(&mask_right_param, p1.x - w_half0, p1.y, p2.x - w_half0, p2.y,
LV_DRAW_MASK_LINE_SIDE_RIGHT);
}
/*Use the normal vector for the endings*/
int16_t mask_left_id = lv_draw_mask_add(&mask_left_param, NULL);
int16_t mask_right_id = lv_draw_mask_add(&mask_right_param, NULL);
int16_t mask_top_id = LV_MASK_ID_INV;
int16_t mask_bottom_id = LV_MASK_ID_INV;
if(!dsc->raw_end) {
lv_draw_mask_line_points_init(&mask_top_param, p1.x, p1.y, p1.x - ydiff, p1.y + xdiff, LV_DRAW_MASK_LINE_SIDE_BOTTOM);
lv_draw_mask_line_points_init(&mask_bottom_param, p2.x, p2.y, p2.x - ydiff, p2.y + xdiff, LV_DRAW_MASK_LINE_SIDE_TOP);
mask_top_id = lv_draw_mask_add(&mask_top_param, NULL);
mask_bottom_id = lv_draw_mask_add(&mask_bottom_param, NULL);
}
lv_disp_t * disp = _lv_refr_get_disp_refreshing();
lv_disp_buf_t * vdb = lv_disp_get_buf(disp);
const lv_area_t * disp_area = &vdb->area;
/*Store the coordinates of the `draw_a` relative to the VDB */
draw_area.x1 -= disp_area->x1;
draw_area.y1 -= disp_area->y1;
draw_area.x2 -= disp_area->x1;
draw_area.y2 -= disp_area->y1;
/* The real draw area is around the line.
* It's easy to calculate with steep lines, but the area can be very wide with very flat lines.
* So deal with it only with steep lines. */
int32_t draw_area_w = lv_area_get_width(&draw_area);
/*Draw the background line by line*/
int32_t h;
size_t mask_buf_size = LV_MATH_MIN(lv_area_get_size(&draw_area), LV_HOR_RES_MAX);
lv_opa_t * mask_buf = _lv_mem_buf_get(mask_buf_size);
lv_area_t fill_area;
fill_area.x1 = draw_area.x1 + disp_area->x1;
fill_area.x2 = draw_area.x2 + disp_area->x1;
fill_area.y1 = draw_area.y1 + disp_area->y1;
fill_area.y2 = fill_area.y1;
int32_t x = vdb->area.x1 + draw_area.x1;
uint32_t mask_p = 0;
_lv_memset_ff(mask_buf, mask_buf_size);
/*Fill the first row with 'color'*/
for(h = draw_area.y1 + disp_area->y1; h <= draw_area.y2 + disp_area->y1; h++) {
lv_draw_mask_res_t mask_res = lv_draw_mask_apply(&mask_buf[mask_p], x, h, draw_area_w);
if(mask_res == LV_DRAW_MASK_RES_TRANSP) {
_lv_memset_00(&mask_buf[mask_p], draw_area_w);
}
mask_p += draw_area_w;
if((uint32_t) mask_p + draw_area_w < mask_buf_size) {
fill_area.y2 ++;
}
else {
_lv_blend_fill(&fill_area, clip,
dsc->color, mask_buf, LV_DRAW_MASK_RES_CHANGED, dsc->opa,
dsc->blend_mode);
fill_area.y1 = fill_area.y2 + 1;
fill_area.y2 = fill_area.y1;
mask_p = 0;
_lv_memset_ff(mask_buf, mask_buf_size);
}
}
/*Flush the last part*/
if(fill_area.y1 != fill_area.y2) {
fill_area.y2--;
_lv_blend_fill(&fill_area, clip,
dsc->color, mask_buf, LV_DRAW_MASK_RES_CHANGED, dsc->opa,
dsc->blend_mode);
}
_lv_mem_buf_release(mask_buf);
lv_draw_mask_remove_id(mask_left_id);
lv_draw_mask_remove_id(mask_right_id);
lv_draw_mask_remove_id(mask_top_id);
lv_draw_mask_remove_id(mask_bottom_id);
}

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nodemcuv2/lv_arduino/src/src/lv_draw/lv_draw_line.h Normal file
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/**
* @file lv_draw_line.h
*
*/
#ifndef LV_DRAW_LINE_H
#define LV_DRAW_LINE_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_core/lv_style.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
typedef struct {
lv_color_t color;
lv_style_int_t width;
lv_style_int_t dash_width;
lv_style_int_t dash_gap;
lv_opa_t opa;
lv_blend_mode_t blend_mode : 2;
uint8_t round_start : 1;
uint8_t round_end : 1;
uint8_t raw_end : 1; /*Do not bother with perpendicular line ending is it's not visible for any reason*/
} lv_draw_line_dsc_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
//! @cond Doxygen_Suppress
/**
* Draw a line
* @param point1 first point of the line
* @param point2 second point of the line
* @param mask the line will be drawn only on this area
* @param style pointer to a line's style
* @param opa_scale scale down all opacities by the factor
*/
LV_ATTRIBUTE_FAST_MEM void lv_draw_line(const lv_point_t * point1, const lv_point_t * point2, const lv_area_t * mask,
lv_draw_line_dsc_t * dsc);
LV_ATTRIBUTE_FAST_MEM void lv_draw_line_dsc_init(lv_draw_line_dsc_t * dsc);
//! @endcond
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_DRAW_LINE_H*/

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/**
* @file lv_mask.h
*
*/
#ifndef LV_MASK_H
#define LV_MASK_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include <stdbool.h>
#include "../lv_misc/lv_area.h"
#include "../lv_misc/lv_color.h"
/*********************
* DEFINES
*********************/
#define LV_MASK_ID_INV (-1)
#define _LV_MASK_MAX_NUM 16
/**********************
* TYPEDEFS
**********************/
enum {
LV_DRAW_MASK_RES_TRANSP,
LV_DRAW_MASK_RES_FULL_COVER,
LV_DRAW_MASK_RES_CHANGED,
LV_DRAW_MASK_RES_UNKNOWN
};
typedef uint8_t lv_draw_mask_res_t;
enum {
LV_DRAW_MASK_TYPE_LINE,
LV_DRAW_MASK_TYPE_ANGLE,
LV_DRAW_MASK_TYPE_RADIUS,
LV_DRAW_MASK_TYPE_FADE,
LV_DRAW_MASK_TYPE_MAP,
};
typedef uint8_t lv_draw_mask_type_t;
enum {
LV_DRAW_MASK_LINE_SIDE_LEFT = 0,
LV_DRAW_MASK_LINE_SIDE_RIGHT,
LV_DRAW_MASK_LINE_SIDE_TOP,
LV_DRAW_MASK_LINE_SIDE_BOTTOM,
};
/**
* A common callback type for every mask type.
* Used internally by the library.
*/
typedef lv_draw_mask_res_t (*lv_draw_mask_xcb_t)(lv_opa_t * mask_buf, lv_coord_t abs_x, lv_coord_t abs_y,
lv_coord_t len,
void * p);
typedef uint8_t lv_draw_mask_line_side_t;
typedef struct {
lv_draw_mask_xcb_t cb;
lv_draw_mask_type_t type;
} lv_draw_mask_common_dsc_t;
typedef struct {
/*The first element must be the common descriptor*/
lv_draw_mask_common_dsc_t dsc;
struct {
/*First point */
lv_point_t p1;
/*Second point*/
lv_point_t p2;
/*Which side to keep?*/
lv_draw_mask_line_side_t side : 2;
} cfg;
/*A point of the line*/
lv_point_t origo;
/* X / (1024*Y) steepness (X is 0..1023 range). What is the change of X in 1024 Y?*/
int32_t xy_steep;
/* Y / (1024*X) steepness (Y is 0..1023 range). What is the change of Y in 1024 X?*/
int32_t yx_steep;
/*Helper which stores yx_steep for flat lines and xy_steep for steep (non flat) lines */
int32_t steep;
/*Steepness in 1 px in 0..255 range. Used only by flat lines. */
int32_t spx;
/*1: It's a flat line? (Near to horizontal)*/
uint8_t flat : 1;
/* Invert the mask. The default is: Keep the left part.
* It is used to select left/right/top/bottom*/
uint8_t inv: 1;
} lv_draw_mask_line_param_t;
typedef struct {
/*The first element must be the common descriptor*/
lv_draw_mask_common_dsc_t dsc;
struct {
lv_point_t vertex_p;
lv_coord_t start_angle;
lv_coord_t end_angle;
} cfg;
lv_draw_mask_line_param_t start_line;
lv_draw_mask_line_param_t end_line;
uint16_t delta_deg;
} lv_draw_mask_angle_param_t;
typedef struct {
/*The first element must be the common descriptor*/
lv_draw_mask_common_dsc_t dsc;
struct {
lv_area_t rect;
lv_coord_t radius;
/* Invert the mask. 0: Keep the pixels inside.*/
uint8_t outer: 1;
} cfg;
int32_t y_prev;
lv_sqrt_res_t y_prev_x;
} lv_draw_mask_radius_param_t;
typedef struct {
/*The first element must be the common descriptor*/
lv_draw_mask_common_dsc_t dsc;
struct {
lv_area_t coords;
lv_coord_t y_top;
lv_coord_t y_bottom;
lv_opa_t opa_top;
lv_opa_t opa_bottom;
} cfg;
} lv_draw_mask_fade_param_t;
typedef struct _lv_draw_mask_map_param_t {
/*The first element must be the common descriptor*/
lv_draw_mask_common_dsc_t dsc;
struct {
lv_area_t coords;
const lv_opa_t * map;
} cfg;
} lv_draw_mask_map_param_t;
typedef struct {
void * param;
void * custom_id;
} _lv_draw_mask_saved_t;
typedef _lv_draw_mask_saved_t _lv_draw_mask_saved_arr_t[_LV_MASK_MAX_NUM];
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Add a draw mask. Everything drawn after it (until removing the mask) will be affected by the mask.
* @param param an initialized mask parameter. Only the pointer is saved.
* @param custom_id a custom pointer to identify the mask. Used in `lv_draw_mask_remove_custom`.
* @return the an integer, the ID of the mask. Can be used in `lv_draw_mask_remove_id`.
*/
int16_t lv_draw_mask_add(void * param, void * custom_id);
//! @cond Doxygen_Suppress
/**
* Apply the added buffers on a line. Used internally by the library's drawing routines.
* @param mask_buf store the result mask here. Has to be `len` byte long. Should be initialized with `0xFF`.
* @param abs_x absolute X coordinate where the line to calculate start
* @param abs_y absolute Y coordinate where the line to calculate start
* @param len length of the line to calculate (in pixel count)
* @return One of these values:
* - `LV_DRAW_MASK_RES_FULL_TRANSP`: the whole line is transparent. `mask_buf` is not set to zero
* - `LV_DRAW_MASK_RES_FULL_COVER`: the whole line is fully visible. `mask_buf` is unchanged
* - `LV_DRAW_MASK_RES_CHANGED`: `mask_buf` has changed, it shows the desired opacity of each pixel in the given line
*/
LV_ATTRIBUTE_FAST_MEM lv_draw_mask_res_t lv_draw_mask_apply(lv_opa_t * mask_buf, lv_coord_t abs_x, lv_coord_t abs_y,
lv_coord_t len);
//! @endcond
/**
* Remove a mask with a given ID
* @param id the ID of the mask. Returned by `lv_draw_mask_add`
* @return the parameter of the removed mask.
* If more masks have `custom_id` ID then the last mask's parameter will be returned
*/
void * lv_draw_mask_remove_id(int16_t id);
/**
* Remove all mask with a given custom ID
* @param custom_id a pointer used in `lv_draw_mask_add`
* @return return the parameter of the removed mask.
* If more masks have `custom_id` ID then the last mask's parameter will be returned
*/
void * lv_draw_mask_remove_custom(void * custom_id);
//! @cond Doxygen_Suppress
/**
* Count the currently added masks
* @return number of active masks
*/
LV_ATTRIBUTE_FAST_MEM uint8_t lv_draw_mask_get_cnt(void);
//! @endcond
/**
*Initialize a line mask from two points.
* @param param pointer to a `lv_draw_mask_param_t` to initialize
* @param p1x X coordinate of the first point of the line
* @param p1y Y coordinate of the first point of the line
* @param p2x X coordinate of the second point of the line
* @param p2y y coordinate of the second point of the line
* @param side and element of `lv_draw_mask_line_side_t` to describe which side to keep.
* With `LV_DRAW_MASK_LINE_SIDE_LEFT/RIGHT` and horizontal line all pixels are kept
* With `LV_DRAW_MASK_LINE_SIDE_TOP/BOTTOM` and vertical line all pixels are kept
*/
void lv_draw_mask_line_points_init(lv_draw_mask_line_param_t * param, lv_coord_t p1x, lv_coord_t p1y, lv_coord_t p2x,
lv_coord_t p2y, lv_draw_mask_line_side_t side);
/**
*Initialize a line mask from a point and an angle.
* @param param pointer to a `lv_draw_mask_param_t` to initialize
* @param px X coordinate of a point of the line
* @param py X coordinate of a point of the line
* @param angle right 0 deg, bottom: 90
* @param side and element of `lv_draw_mask_line_side_t` to describe which side to keep.
* With `LV_DRAW_MASK_LINE_SIDE_LEFT/RIGHT` and horizontal line all pixels are kept
* With `LV_DRAW_MASK_LINE_SIDE_TOP/BOTTOM` and vertical line all pixels are kept
*/
void lv_draw_mask_line_angle_init(lv_draw_mask_line_param_t * param, lv_coord_t p1x, lv_coord_t py, int16_t angle,
lv_draw_mask_line_side_t side);
/**
* Initialize an angle mask.
* @param param pointer to a `lv_draw_mask_param_t` to initialize
* @param vertex_x X coordinate of the angle vertex (absolute coordinates)
* @param vertex_y Y coordinate of the angle vertex (absolute coordinates)
* @param start_angle start angle in degrees. 0 deg on the right, 90 deg, on the bottom
* @param end_angle end angle
*/
void lv_draw_mask_angle_init(lv_draw_mask_angle_param_t * param, lv_coord_t vertex_x, lv_coord_t vertex_y,
lv_coord_t start_angle, lv_coord_t end_angle);
/**
* Initialize a fade mask.
* @param param param pointer to a `lv_draw_mask_param_t` to initialize
* @param rect coordinates of the rectangle to affect (absolute coordinates)
* @param radius radius of the rectangle
* @param inv: true: keep the pixels inside the rectangle; keep the pixels outside of the rectangle
*/
void lv_draw_mask_radius_init(lv_draw_mask_radius_param_t * param, const lv_area_t * rect, lv_coord_t radius, bool inv);
/**
* Initialize a fade mask.
* @param param pointer to a `lv_draw_mask_param_t` to initialize
* @param coords coordinates of the area to affect (absolute coordinates)
* @param opa_top opacity on the top
* @param y_top at which coordinate start to change to opacity to `opa_bottom`
* @param opa_bottom opacity at the bottom
* @param y_bottom at which coordinate reach `opa_bottom`.
*/
void lv_draw_mask_fade_init(lv_draw_mask_fade_param_t * param, const lv_area_t * coords, lv_opa_t opa_top,
lv_coord_t y_top,
lv_opa_t opa_bottom, lv_coord_t y_bottom);
/**
* Initialize a map mask.
* @param param pointer to a `lv_draw_mask_param_t` to initialize
* @param coords coordinates of the map (absolute coordinates)
* @param map array of bytes with the mask values
*/
void lv_draw_mask_map_init(lv_draw_mask_map_param_t * param, const lv_area_t * coords, const lv_opa_t * map);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_MASK_H*/

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/**
* @file lv_draw_rect.h
*
*/
#ifndef LV_DRAW_RECT_H
#define LV_DRAW_RECT_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_core/lv_style.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
typedef struct {
lv_style_int_t radius;
/*Background*/
lv_color_t bg_color;
lv_color_t bg_grad_color;
lv_grad_dir_t bg_grad_dir;
lv_style_int_t bg_main_color_stop;
lv_style_int_t bg_grad_color_stop;
lv_opa_t bg_opa;
lv_blend_mode_t bg_blend_mode;
/*Border*/
lv_color_t border_color;
lv_style_int_t border_width;
lv_style_int_t border_side;
lv_opa_t border_opa;
lv_blend_mode_t border_blend_mode;
/*Outline*/
lv_color_t outline_color;
lv_style_int_t outline_width;
lv_style_int_t outline_pad;
lv_opa_t outline_opa;
lv_blend_mode_t outline_blend_mode;
/*Shadow*/
lv_color_t shadow_color;
lv_style_int_t shadow_width;
lv_style_int_t shadow_ofs_x;
lv_style_int_t shadow_ofs_y;
lv_style_int_t shadow_spread;
lv_opa_t shadow_opa;
lv_blend_mode_t shadow_blend_mode;
/*Pattern*/
const void * pattern_image;
const lv_font_t * pattern_font;
lv_color_t pattern_recolor;
lv_opa_t pattern_opa;
lv_opa_t pattern_recolor_opa;
uint8_t pattern_repeat : 1;
lv_blend_mode_t pattern_blend_mode;
/*Value*/
const char * value_str;
const lv_font_t * value_font;
lv_opa_t value_opa;
lv_color_t value_color;
lv_style_int_t value_ofs_x;
lv_style_int_t value_ofs_y;
lv_style_int_t value_letter_space;
lv_style_int_t value_line_space;
lv_align_t value_align;
lv_blend_mode_t value_blend_mode;
} lv_draw_rect_dsc_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
LV_ATTRIBUTE_FAST_MEM void lv_draw_rect_dsc_init(lv_draw_rect_dsc_t * dsc);
//! @endcond
/**
* Draw a rectangle
* @param coords the coordinates of the rectangle
* @param mask the rectangle will be drawn only in this mask
* @param style pointer to a style
*/
void lv_draw_rect(const lv_area_t * coords, const lv_area_t * mask, lv_draw_rect_dsc_t * dsc);
/**
* Draw a pixel
* @param point the coordinates of the point to draw
* @param mask the pixel will be drawn only in this mask
* @param style pointer to a style
*/
void lv_draw_px(const lv_point_t * point, const lv_area_t * clip_area, const lv_style_t * style);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_DRAW_RECT_H*/

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/**
* @file lv_draw_triangle.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_draw_triangle.h"
#include "../lv_misc/lv_math.h"
#include "../lv_misc/lv_mem.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Draw a triangle
* @param points pointer to an array with 3 points
* @param clip_area the triangle will be drawn only in this area
* @param draw_dsc pointer to an initialized `lv_draw_rect_dsc_t` variable
*/
void lv_draw_triangle(const lv_point_t points[], const lv_area_t * clip_area, lv_draw_rect_dsc_t * draw_dsc)
{
lv_draw_polygon(points, 3, clip_area, draw_dsc);
}
/**
* Draw a polygon. Only convex polygons are supported
* @param points an array of points
* @param point_cnt number of points
* @param clip_area polygon will be drawn only in this area
* @param draw_dsc pointer to an initialized `lv_draw_rect_dsc_t` variable
*/
void lv_draw_polygon(const lv_point_t points[], uint16_t point_cnt, const lv_area_t * clip_area,
lv_draw_rect_dsc_t * draw_dsc)
{
if(point_cnt < 3) return;
if(points == NULL) return;
int16_t i;
lv_area_t poly_coords = {.x1 = LV_COORD_MAX, .y1 = LV_COORD_MAX, .x2 = LV_COORD_MIN, .y2 = LV_COORD_MIN};
for(i = 0; i < point_cnt; i++) {
poly_coords.x1 = LV_MATH_MIN(poly_coords.x1, points[i].x);
poly_coords.y1 = LV_MATH_MIN(poly_coords.y1, points[i].y);
poly_coords.x2 = LV_MATH_MAX(poly_coords.x2, points[i].x);
poly_coords.y2 = LV_MATH_MAX(poly_coords.y2, points[i].y);
}
bool is_common;
lv_area_t poly_mask;
is_common = _lv_area_intersect(&poly_mask, &poly_coords, clip_area);
if(!is_common) return;
/*Find the lowest point*/
lv_coord_t y_min = points[0].y;
int16_t y_min_i = 0;
for(i = 1; i < point_cnt; i++) {
if(points[i].y < y_min) {
y_min = points[i].y;
y_min_i = i;
}
}
lv_draw_mask_line_param_t * mp = _lv_mem_buf_get(sizeof(lv_draw_mask_line_param_t) * point_cnt);
lv_draw_mask_line_param_t * mp_next = mp;
int32_t i_prev_left = y_min_i;
int32_t i_prev_right = y_min_i;
int32_t i_next_left;
int32_t i_next_right;
uint32_t mask_cnt = 0;
/* Check if the order of points is inverted or not.
* The normal case is when the left point is on `y_min_i - 1`*/
i_next_left = y_min_i - 1;
if(i_next_left < 0) i_next_left = point_cnt + i_next_left;
i_next_right = y_min_i + 1;
if(i_next_right > point_cnt - 1) i_next_right = 0;
bool inv = false;
if(points[i_next_left].x > points[i_next_right].x && points[i_next_left].y < points[i_next_right].y) inv = true;
do {
if(!inv) {
i_next_left = i_prev_left - 1;
if(i_next_left < 0) i_next_left = point_cnt + i_next_left;
i_next_right = i_prev_right + 1;
if(i_next_right > point_cnt - 1) i_next_right = 0;
}
else {
i_next_left = i_prev_left + 1;
if(i_next_left > point_cnt - 1) i_next_left = 0;
i_next_right = i_prev_right - 1;
if(i_next_right < 0) i_next_right = point_cnt + i_next_right;
}
if(points[i_next_left].y >= points[i_prev_left].y) {
if(points[i_next_left].y != points[i_prev_left].y &&
points[i_next_left].x != points[i_prev_left].x) {
lv_draw_mask_line_points_init(mp_next, points[i_prev_left].x, points[i_prev_left].y,
points[i_next_left].x, points[i_next_left].y,
LV_DRAW_MASK_LINE_SIDE_RIGHT);
lv_draw_mask_add(mp_next, mp);
mp_next++;
}
mask_cnt++;
i_prev_left = i_next_left;
}
if(mask_cnt == point_cnt) break;
if(points[i_next_right].y >= points[i_prev_right].y) {
if(points[i_next_right].y != points[i_prev_right].y &&
points[i_next_right].x != points[i_prev_right].x) {
lv_draw_mask_line_points_init(mp_next, points[i_prev_right].x, points[i_prev_right].y,
points[i_next_right].x, points[i_next_right].y,
LV_DRAW_MASK_LINE_SIDE_LEFT);
lv_draw_mask_add(mp_next, mp);
mp_next++;
}
mask_cnt++;
i_prev_right = i_next_right;
}
} while(mask_cnt < point_cnt);
lv_draw_rect(&poly_coords, clip_area, draw_dsc);
lv_draw_mask_remove_custom(mp);
_lv_mem_buf_release(mp);
}
/**********************
* STATIC FUNCTIONS
**********************/

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/**
* @file lv_draw_triangle.h
*
*/
#ifndef LV_DRAW_TRIANGLE_H
#define LV_DRAW_TRIANGLE_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lv_draw_rect.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Draw a triangle
* @param points pointer to an array with 3 points
* @param clip_area the triangle will be drawn only in this area
* @param draw_dsc pointer to an initialized `lv_draw_rect_dsc_t` variable
*/
void lv_draw_triangle(const lv_point_t points[], const lv_area_t * clip, lv_draw_rect_dsc_t * draw_dsc);
/**
* Draw a polygon. Only convex polygons are supported.
* @param points an array of points
* @param point_cnt number of points
* @param clip_area polygon will be drawn only in this area
* @param draw_dsc pointer to an initialized `lv_draw_rect_dsc_t` variable
*/
void lv_draw_polygon(const lv_point_t points[], uint16_t point_cnt, const lv_area_t * mask,
lv_draw_rect_dsc_t * draw_dsc);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_DRAW_TRIANGLE_H*/

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/**
* @file lv_img_buf.c
*
*/
/*********************
* INCLUDES
*********************/
#include <stddef.h>
#include <string.h>
#include "lv_img_buf.h"
#include "lv_draw_img.h"
#include "../lv_misc/lv_math.h"
#include "../lv_misc/lv_log.h"
#include "../lv_misc/lv_mem.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Get the color of an image's pixel
* @param dsc an image descriptor
* @param x x coordinate of the point to get
* @param y x coordinate of the point to get
* @param color the color of the image. In case of `LV_IMG_CF_ALPHA_1/2/4/8` this color is used.
* Not used in other cases.
* @param safe true: check out of bounds
* @return color of the point
*/
lv_color_t lv_img_buf_get_px_color(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_color_t color)
{
lv_color_t p_color = LV_COLOR_BLACK;
uint8_t * buf_u8 = (uint8_t *)dsc->data;
if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR || dsc->header.cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED ||
dsc->header.cf == LV_IMG_CF_TRUE_COLOR_ALPHA) {
uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf) >> 3;
uint32_t px = dsc->header.w * y * px_size + x * px_size;
_lv_memcpy_small(&p_color, &buf_u8[px], sizeof(lv_color_t));
#if LV_COLOR_SIZE == 32
p_color.ch.alpha = 0xFF; /*Only the color should be get so use a default alpha value*/
#endif
}
else if(dsc->header.cf == LV_IMG_CF_INDEXED_1BIT) {
buf_u8 += 4 * 2;
uint8_t bit = x & 0x7;
x = x >> 3;
/* Get the current pixel.
* dsc->header.w + 7 means rounding up to 8 because the lines are byte aligned
* so the possible real width are 8, 16, 24 ...*/
uint32_t px = ((dsc->header.w + 7) >> 3) * y + x;
p_color.full = (buf_u8[px] & (1 << (7 - bit))) >> (7 - bit);
}
else if(dsc->header.cf == LV_IMG_CF_INDEXED_2BIT) {
buf_u8 += 4 * 4;
uint8_t bit = (x & 0x3) * 2;
x = x >> 2;
/* Get the current pixel.
* dsc->header.w + 3 means rounding up to 4 because the lines are byte aligned
* so the possible real width are 4, 8, 12 ...*/
uint32_t px = ((dsc->header.w + 3) >> 2) * y + x;
p_color.full = (buf_u8[px] & (3 << (6 - bit))) >> (6 - bit);
}
else if(dsc->header.cf == LV_IMG_CF_INDEXED_4BIT) {
buf_u8 += 4 * 16;
uint8_t bit = (x & 0x1) * 4;
x = x >> 1;
/* Get the current pixel.
* dsc->header.w + 1 means rounding up to 2 because the lines are byte aligned
* so the possible real width are 2, 4, 6 ...*/
uint32_t px = ((dsc->header.w + 1) >> 1) * y + x;
p_color.full = (buf_u8[px] & (0xF << (4 - bit))) >> (4 - bit);
}
else if(dsc->header.cf == LV_IMG_CF_INDEXED_8BIT) {
buf_u8 += 4 * 256;
uint32_t px = dsc->header.w * y + x;
p_color.full = buf_u8[px];
}
else if(dsc->header.cf == LV_IMG_CF_ALPHA_1BIT || dsc->header.cf == LV_IMG_CF_ALPHA_2BIT ||
dsc->header.cf == LV_IMG_CF_ALPHA_4BIT || dsc->header.cf == LV_IMG_CF_ALPHA_8BIT) {
p_color = color;
}
return p_color;
}
/**
* Get the alpha value of an image's pixel
* @param dsc pointer to an image descriptor
* @param x x coordinate of the point to set
* @param y x coordinate of the point to set
* @param safe true: check out of bounds
* @return alpha value of the point
*/
lv_opa_t lv_img_buf_get_px_alpha(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y)
{
uint8_t * buf_u8 = (uint8_t *)dsc->data;
if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR_ALPHA) {
uint32_t px = dsc->header.w * y * LV_IMG_PX_SIZE_ALPHA_BYTE + x * LV_IMG_PX_SIZE_ALPHA_BYTE;
return buf_u8[px + LV_IMG_PX_SIZE_ALPHA_BYTE - 1];
}
else if(dsc->header.cf == LV_IMG_CF_ALPHA_1BIT) {
uint8_t bit = x & 0x7;
x = x >> 3;
/* Get the current pixel.
* dsc->header.w + 7 means rounding up to 8 because the lines are byte aligned
* so the possible real width are 8 ,16, 24 ...*/
uint32_t px = ((dsc->header.w + 7) >> 3) * y + x;
uint8_t px_opa = (buf_u8[px] & (1 << (7 - bit))) >> (7 - bit);
return px_opa ? LV_OPA_TRANSP : LV_OPA_COVER;
}
else if(dsc->header.cf == LV_IMG_CF_ALPHA_2BIT) {
const uint8_t opa_table[4] = {0, 85, 170, 255}; /*Opacity mapping with bpp = 2*/
uint8_t bit = (x & 0x3) * 2;
x = x >> 2;
/* Get the current pixel.
* dsc->header.w + 4 means rounding up to 8 because the lines are byte aligned
* so the possible real width are 4 ,8, 12 ...*/
uint32_t px = ((dsc->header.w + 3) >> 2) * y + x;
uint8_t px_opa = (buf_u8[px] & (3 << (6 - bit))) >> (6 - bit);
return opa_table[px_opa];
}
else if(dsc->header.cf == LV_IMG_CF_ALPHA_4BIT) {
const uint8_t opa_table[16] = {0, 17, 34, 51, /*Opacity mapping with bpp = 4*/
68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255
};
uint8_t bit = (x & 0x1) * 4;
x = x >> 1;
/* Get the current pixel.
* dsc->header.w + 1 means rounding up to 8 because the lines are byte aligned
* so the possible real width are 2 ,4, 6 ...*/
uint32_t px = ((dsc->header.w + 1) >> 1) * y + x;
uint8_t px_opa = (buf_u8[px] & (0xF << (4 - bit))) >> (4 - bit);
return opa_table[px_opa];
}
else if(dsc->header.cf == LV_IMG_CF_ALPHA_8BIT) {
uint32_t px = dsc->header.w * y + x;
return buf_u8[px];
}
return LV_OPA_COVER;
}
/**
* Set the alpha value of a pixel of an image. The color won't be affected
* @param dsc pointer to an image descriptor
* @param x x coordinate of the point to set
* @param y x coordinate of the point to set
* @param opa the desired opacity
* @param safe true: check out of bounds
*/
void lv_img_buf_set_px_alpha(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_opa_t opa)
{
uint8_t * buf_u8 = (uint8_t *)dsc->data;
if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR_ALPHA) {
uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf) >> 3;
uint32_t px = dsc->header.w * y * px_size + x * px_size;
buf_u8[px + px_size - 1] = opa;
}
else if(dsc->header.cf == LV_IMG_CF_ALPHA_1BIT) {
opa = opa >> 7; /*opa -> [0,1]*/
uint8_t bit = x & 0x7;
x = x >> 3;
/* Get the current pixel.
* dsc->header.w + 7 means rounding up to 8 because the lines are byte aligned
* so the possible real width are 8 ,16, 24 ...*/
uint32_t px = ((dsc->header.w + 7) >> 3) * y + x;
buf_u8[px] = buf_u8[px] & ~(1 << (7 - bit));
buf_u8[px] = buf_u8[px] | ((opa & 0x1) << (7 - bit));
}
else if(dsc->header.cf == LV_IMG_CF_ALPHA_2BIT) {
opa = opa >> 6; /*opa -> [0,3]*/
uint8_t bit = (x & 0x3) * 2;
x = x >> 2;
/* Get the current pixel.
* dsc->header.w + 4 means rounding up to 8 because the lines are byte aligned
* so the possible real width are 4 ,8, 12 ...*/
uint32_t px = ((dsc->header.w + 3) >> 2) * y + x;
buf_u8[px] = buf_u8[px] & ~(3 << (6 - bit));
buf_u8[px] = buf_u8[px] | ((opa & 0x3) << (6 - bit));
}
else if(dsc->header.cf == LV_IMG_CF_ALPHA_4BIT) {
opa = opa >> 4; /*opa -> [0,15]*/
uint8_t bit = (x & 0x1) * 4;
x = x >> 1;
/* Get the current pixel.
* dsc->header.w + 1 means rounding up to 8 because the lines are byte aligned
* so the possible real width are 2 ,4, 6 ...*/
uint32_t px = ((dsc->header.w + 1) >> 1) * y + x;
buf_u8[px] = buf_u8[px] & ~(0xF << (4 - bit));
buf_u8[px] = buf_u8[px] | ((opa & 0xF) << (4 - bit));
}
else if(dsc->header.cf == LV_IMG_CF_ALPHA_8BIT) {
uint32_t px = dsc->header.w * y + x;
buf_u8[px] = opa;
}
}
/**
* Set the color of a pixel of an image. The alpha channel won't be affected.
* @param dsc pointer to an image descriptor
* @param x x coordinate of the point to set
* @param y x coordinate of the point to set
* @param c color of the point
* @param safe true: check out of bounds
*/
void lv_img_buf_set_px_color(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_color_t c)
{
uint8_t * buf_u8 = (uint8_t *)dsc->data;
if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR || dsc->header.cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED) {
uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf) >> 3;
uint32_t px = dsc->header.w * y * px_size + x * px_size;
_lv_memcpy_small(&buf_u8[px], &c, px_size);
}
else if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR_ALPHA) {
uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf) >> 3;
uint32_t px = dsc->header.w * y * px_size + x * px_size;
_lv_memcpy_small(&buf_u8[px], &c, px_size - 1); /*-1 to not overwrite the alpha value*/
}
else if(dsc->header.cf == LV_IMG_CF_INDEXED_1BIT) {
buf_u8 += sizeof(lv_color32_t) * 2; /*Skip the palette*/
uint8_t bit = x & 0x7;
x = x >> 3;
/* Get the current pixel.
* dsc->header.w + 7 means rounding up to 8 because the lines are byte aligned
* so the possible real width are 8 ,16, 24 ...*/
uint32_t px = ((dsc->header.w + 7) >> 3) * y + x;
buf_u8[px] = buf_u8[px] & ~(1 << (7 - bit));
buf_u8[px] = buf_u8[px] | ((c.full & 0x1) << (7 - bit));
}
else if(dsc->header.cf == LV_IMG_CF_INDEXED_2BIT) {
buf_u8 += sizeof(lv_color32_t) * 4; /*Skip the palette*/
uint8_t bit = (x & 0x3) * 2;
x = x >> 2;
/* Get the current pixel.
* dsc->header.w + 3 means rounding up to 4 because the lines are byte aligned
* so the possible real width are 4, 8 ,12 ...*/
uint32_t px = ((dsc->header.w + 3) >> 2) * y + x;
buf_u8[px] = buf_u8[px] & ~(3 << (6 - bit));
buf_u8[px] = buf_u8[px] | ((c.full & 0x3) << (6 - bit));
}
else if(dsc->header.cf == LV_IMG_CF_INDEXED_4BIT) {
buf_u8 += sizeof(lv_color32_t) * 16; /*Skip the palette*/
uint8_t bit = (x & 0x1) * 4;
x = x >> 1;
/* Get the current pixel.
* dsc->header.w + 1 means rounding up to 2 because the lines are byte aligned
* so the possible real width are 2 ,4, 6 ...*/
uint32_t px = ((dsc->header.w + 1) >> 1) * y + x;
buf_u8[px] = buf_u8[px] & ~(0xF << (4 - bit));
buf_u8[px] = buf_u8[px] | ((c.full & 0xF) << (4 - bit));
}
else if(dsc->header.cf == LV_IMG_CF_INDEXED_8BIT) {
buf_u8 += sizeof(lv_color32_t) * 256; /*Skip the palette*/
uint32_t px = dsc->header.w * y + x;
buf_u8[px] = c.full;
}
}
/**
* Set the palette color of an indexed image. Valid only for `LV_IMG_CF_INDEXED1/2/4/8`
* @param dsc pointer to an image descriptor
* @param id the palette color to set:
* - for `LV_IMG_CF_INDEXED1`: 0..1
* - for `LV_IMG_CF_INDEXED2`: 0..3
* - for `LV_IMG_CF_INDEXED4`: 0..15
* - for `LV_IMG_CF_INDEXED8`: 0..255
* @param c the color to set
*/
void lv_img_buf_set_palette(lv_img_dsc_t * dsc, uint8_t id, lv_color_t c)
{
if((dsc->header.cf == LV_IMG_CF_ALPHA_1BIT && id > 1) || (dsc->header.cf == LV_IMG_CF_ALPHA_2BIT && id > 3) ||
(dsc->header.cf == LV_IMG_CF_ALPHA_4BIT && id > 15) || (dsc->header.cf == LV_IMG_CF_ALPHA_8BIT)) {
LV_LOG_WARN("lv_img_buf_set_px_alpha: invalid 'id'");
return;
}
lv_color32_t c32;
c32.full = lv_color_to32(c);
uint8_t * buf = (uint8_t *)dsc->data;
_lv_memcpy_small(&buf[id * sizeof(c32)], &c32, sizeof(c32));
}
/**
* Allocate an image buffer in RAM
* @param w width of image
* @param h height of image
* @param cf a color format (`LV_IMG_CF_...`)
* @return an allocated image, or NULL on failure
*/
lv_img_dsc_t * lv_img_buf_alloc(lv_coord_t w, lv_coord_t h, lv_img_cf_t cf)
{
/* Allocate image descriptor */
lv_img_dsc_t * dsc = lv_mem_alloc(sizeof(lv_img_dsc_t));
if(dsc == NULL)
return NULL;
_lv_memset_00(dsc, sizeof(lv_img_dsc_t));
/* Get image data size */
dsc->data_size = lv_img_buf_get_img_size(w, h, cf);
if(dsc->data_size == 0) {
lv_mem_free(dsc);
return NULL;
}
/* Allocate raw buffer */
dsc->data = lv_mem_alloc(dsc->data_size);
if(dsc->data == NULL) {
lv_mem_free(dsc);
return NULL;
}
_lv_memset_00((uint8_t *)dsc->data, dsc->data_size);
/* Fill in header */
dsc->header.always_zero = 0;
dsc->header.w = w;
dsc->header.h = h;
dsc->header.cf = cf;
return dsc;
}
/**
* Free an allocated image buffer
* @param dsc image buffer to free
*/
void lv_img_buf_free(lv_img_dsc_t * dsc)
{
if(dsc != NULL) {
if(dsc->data != NULL)
lv_mem_free(dsc->data);
lv_mem_free(dsc);
}
}
/**
* Get the memory consumption of a raw bitmap, given color format and dimensions.
* @param w width
* @param h height
* @param cf color format
* @return size in bytes
*/
uint32_t lv_img_buf_get_img_size(lv_coord_t w, lv_coord_t h, lv_img_cf_t cf)
{
switch(cf) {
case LV_IMG_CF_TRUE_COLOR:
return LV_IMG_BUF_SIZE_TRUE_COLOR(w, h);
case LV_IMG_CF_TRUE_COLOR_ALPHA:
return LV_IMG_BUF_SIZE_TRUE_COLOR_ALPHA(w, h);
case LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED:
return LV_IMG_BUF_SIZE_TRUE_COLOR_CHROMA_KEYED(w, h);
case LV_IMG_CF_ALPHA_1BIT:
return LV_IMG_BUF_SIZE_ALPHA_1BIT(w, h);
case LV_IMG_CF_ALPHA_2BIT:
return LV_IMG_BUF_SIZE_ALPHA_2BIT(w, h);
case LV_IMG_CF_ALPHA_4BIT:
return LV_IMG_BUF_SIZE_ALPHA_4BIT(w, h);
case LV_IMG_CF_ALPHA_8BIT:
return LV_IMG_BUF_SIZE_ALPHA_8BIT(w, h);
case LV_IMG_CF_INDEXED_1BIT:
return LV_IMG_BUF_SIZE_INDEXED_1BIT(w, h);
case LV_IMG_CF_INDEXED_2BIT:
return LV_IMG_BUF_SIZE_INDEXED_2BIT(w, h);
case LV_IMG_CF_INDEXED_4BIT:
return LV_IMG_BUF_SIZE_INDEXED_4BIT(w, h);
case LV_IMG_CF_INDEXED_8BIT:
return LV_IMG_BUF_SIZE_INDEXED_8BIT(w, h);
default:
return 0;
}
}
#if LV_USE_IMG_TRANSFORM
/**
* Initialize a descriptor to transform an image
* @param dsc pointer to an `lv_img_transform_dsc_t` variable whose `cfg` field is initialized
*/
void _lv_img_buf_transform_init(lv_img_transform_dsc_t * dsc)
{
dsc->tmp.pivot_x_256 = dsc->cfg.pivot_x * 256;
dsc->tmp.pivot_y_256 = dsc->cfg.pivot_y * 256;
int32_t angle_low = dsc->cfg.angle / 10;
int32_t angle_hight = angle_low + 1;
int32_t angle_rem = dsc->cfg.angle - (angle_low * 10);
int32_t s1 = _lv_trigo_sin(-angle_low);
int32_t s2 = _lv_trigo_sin(-angle_hight);
int32_t c1 = _lv_trigo_sin(-angle_low + 90);
int32_t c2 = _lv_trigo_sin(-angle_hight + 90);
dsc->tmp.sinma = (s1 * (10 - angle_rem) + s2 * angle_rem) / 10;
dsc->tmp.cosma = (c1 * (10 - angle_rem) + c2 * angle_rem) / 10;
dsc->tmp.chroma_keyed = lv_img_cf_is_chroma_keyed(dsc->cfg.cf) ? 1 : 0;
dsc->tmp.has_alpha = lv_img_cf_has_alpha(dsc->cfg.cf) ? 1 : 0;
if(dsc->cfg.cf == LV_IMG_CF_TRUE_COLOR || dsc->cfg.cf == LV_IMG_CF_TRUE_COLOR_ALPHA ||
dsc->cfg.cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED) {
dsc->tmp.native_color = 1;
}
else {
dsc->tmp.native_color = 0;
}
dsc->tmp.img_dsc.data = dsc->cfg.src;
dsc->tmp.img_dsc.header.always_zero = 0;
dsc->tmp.img_dsc.header.cf = dsc->cfg.cf;
dsc->tmp.img_dsc.header.w = dsc->cfg.src_w;
dsc->tmp.img_dsc.header.h = dsc->cfg.src_h;
dsc->tmp.zoom_inv = (256 * 256) / dsc->cfg.zoom;
dsc->res.opa = LV_OPA_COVER;
dsc->res.color = dsc->cfg.color;
}
#endif
/**
* Get the area of a rectangle if its rotated and scaled
* @param res store the coordinates here
* @param w width of the rectangle to transform
* @param h height of the rectangle to transform
* @param angle angle of rotation
* @param zoom zoom, (256 no zoom)
* @param pivot x,y pivot coordinates of rotation
*/
void _lv_img_buf_get_transformed_area(lv_area_t * res, lv_coord_t w, lv_coord_t h, int16_t angle, uint16_t zoom,
lv_point_t * pivot)
{
#if LV_USE_IMG_TRANSFORM
int32_t angle_low = angle / 10;
int32_t angle_hight = angle_low + 1;
int32_t angle_rem = angle - (angle_low * 10);
int32_t s1 = _lv_trigo_sin(angle_low);
int32_t s2 = _lv_trigo_sin(angle_hight);
int32_t c1 = _lv_trigo_sin(angle_low + 90);
int32_t c2 = _lv_trigo_sin(angle_hight + 90);
int32_t sinma = (s1 * (10 - angle_rem) + s2 * angle_rem) / 10;
int32_t cosma = (c1 * (10 - angle_rem) + c2 * angle_rem) / 10;
lv_point_t lt;
lv_point_t rt;
lv_point_t lb;
lv_point_t rb;
lv_coord_t xt;
lv_coord_t yt;
lv_area_t a;
a.x1 = ((-pivot->x) * zoom) >> 8;
a.y1 = ((-pivot->y) * zoom) >> 8;
a.x2 = ((w - pivot->x) * zoom) >> 8;
a.y2 = ((h - pivot->y) * zoom) >> 8;
xt = a.x1;
yt = a.y1;
lt.x = ((cosma * xt - sinma * yt) >> LV_TRIGO_SHIFT) + pivot->x;
lt.y = ((sinma * xt + cosma * yt) >> LV_TRIGO_SHIFT) + pivot->y;
xt = a.x2;
yt = a.y1;
rt.x = ((cosma * xt - sinma * yt) >> LV_TRIGO_SHIFT) + pivot->x;
rt.y = ((sinma * xt + cosma * yt) >> LV_TRIGO_SHIFT) + pivot->y;
xt = a.x1;
yt = a.y2;
lb.x = ((cosma * xt - sinma * yt) >> LV_TRIGO_SHIFT) + pivot->x;
lb.y = ((sinma * xt + cosma * yt) >> LV_TRIGO_SHIFT) + pivot->y;
xt = a.x2;
yt = a.y2;
rb.x = ((cosma * xt - sinma * yt) >> LV_TRIGO_SHIFT) + pivot->x;
rb.y = ((sinma * xt + cosma * yt) >> LV_TRIGO_SHIFT) + pivot->y;
res->x1 = LV_MATH_MIN4(lb.x, lt.x, rb.x, rt.x);
res->x2 = LV_MATH_MAX4(lb.x, lt.x, rb.x, rt.x);
res->y1 = LV_MATH_MIN4(lb.y, lt.y, rb.y, rt.y);
res->y2 = LV_MATH_MAX4(lb.y, lt.y, rb.y, rt.y);
#else
LV_UNUSED(angle);
LV_UNUSED(zoom);
LV_UNUSED(pivot);
res->x1 = 0;
res->y1 = 0;
res->x2 = w;
res->y2 = h;
#endif
}
#if LV_USE_IMG_TRANSFORM
/**
* Continue transformation by taking the neighbors into account
* @param dsc pointer to the transformation descriptor
*/
bool _lv_img_buf_transform_anti_alias(lv_img_transform_dsc_t * dsc)
{
const uint8_t * src_u8 = dsc->cfg.src;
/*Get the fractional part of the source pixel*/
int xs_fract = dsc->tmp.xs & 0xff;
int ys_fract = dsc->tmp.ys & 0xff;
int32_t xn; /*x neighbor*/
lv_opa_t xr; /*x mix ratio*/
if(xs_fract < 0x70) {
xn = - 1;
if(dsc->tmp.xs_int + xn < 0) xn = 0;
xr = xs_fract + 0x80;
}
else if(xs_fract > 0x90) {
xn = 1;
if(dsc->tmp.xs_int + xn >= dsc->cfg.src_w) xn = 0;
xr = (0xFF - xs_fract) + 0x80;
}
else {
xn = 0;
xr = 0xFF;
}
int32_t yn; /*x neighbor*/
lv_opa_t yr; /*x mix ratio*/
if(ys_fract < 0x70) {
yn = - 1;
if(dsc->tmp.ys_int + yn < 0) yn = 0;
yr = ys_fract + 0x80;
}
else if(ys_fract > 0x90) {
yn = 1;
if(dsc->tmp.ys_int + yn >= dsc->cfg.src_h) yn = 0;
yr = (0xFF - ys_fract) + 0x80;
}
else {
yn = 0;
yr = 0xFF;
}
lv_color_t c00 = dsc->res.color;
lv_color_t c01;
lv_color_t c10;
lv_color_t c11;
lv_opa_t a00 = dsc->res.opa;
lv_opa_t a10 = 0;
lv_opa_t a01 = 0;
lv_opa_t a11 = 0;
if(dsc->tmp.native_color) {
_lv_memcpy_small(&c01, &src_u8[dsc->tmp.pxi + dsc->tmp.px_size * xn], sizeof(lv_color_t));
_lv_memcpy_small(&c10, &src_u8[dsc->tmp.pxi + dsc->cfg.src_w * dsc->tmp.px_size * yn], sizeof(lv_color_t));
_lv_memcpy_small(&c11, &src_u8[dsc->tmp.pxi + dsc->cfg.src_w * dsc->tmp.px_size * yn + dsc->tmp.px_size * xn],
sizeof(lv_color_t));
if(dsc->tmp.has_alpha) {
a10 = src_u8[dsc->tmp.pxi + dsc->tmp.px_size * xn + dsc->tmp.px_size - 1];
a01 = src_u8[dsc->tmp.pxi + dsc->cfg.src_w * dsc->tmp.px_size * yn + dsc->tmp.px_size - 1];
a11 = src_u8[dsc->tmp.pxi + dsc->cfg.src_w * dsc->tmp.px_size * yn + dsc->tmp.px_size * xn + dsc->tmp.px_size - 1];
}
}
else {
c01 = lv_img_buf_get_px_color(&dsc->tmp.img_dsc, dsc->tmp.xs_int + xn, dsc->tmp.ys_int, dsc->cfg.color);
c10 = lv_img_buf_get_px_color(&dsc->tmp.img_dsc, dsc->tmp.xs_int, dsc->tmp.ys_int + yn, dsc->cfg.color);
c11 = lv_img_buf_get_px_color(&dsc->tmp.img_dsc, dsc->tmp.xs_int + xn, dsc->tmp.ys_int + yn, dsc->cfg.color);
if(dsc->tmp.has_alpha) {
a10 = lv_img_buf_get_px_alpha(&dsc->tmp.img_dsc, dsc->tmp.xs_int + xn, dsc->tmp.ys_int);
a01 = lv_img_buf_get_px_alpha(&dsc->tmp.img_dsc, dsc->tmp.xs_int, dsc->tmp.ys_int + yn);
a11 = lv_img_buf_get_px_alpha(&dsc->tmp.img_dsc, dsc->tmp.xs_int + xn, dsc->tmp.ys_int + yn);
}
}
lv_opa_t xr0 = xr;
lv_opa_t xr1 = xr;
if(dsc->tmp.has_alpha) {
lv_opa_t a0 = (a00 * xr + (a10 * (255 - xr))) >> 8;
lv_opa_t a1 = (a01 * xr + (a11 * (255 - xr))) >> 8;
dsc->res.opa = (a0 * yr + (a1 * (255 - yr))) >> 8;
if(a0 <= LV_OPA_MIN && a1 <= LV_OPA_MIN) return false;
if(a0 <= LV_OPA_MIN) yr = LV_OPA_TRANSP;
if(a1 <= LV_OPA_MIN) yr = LV_OPA_COVER;
if(a00 <= LV_OPA_MIN) xr0 = LV_OPA_TRANSP;
if(a10 <= LV_OPA_MIN) xr0 = LV_OPA_COVER;
if(a01 <= LV_OPA_MIN) xr1 = LV_OPA_TRANSP;
if(a11 <= LV_OPA_MIN) xr1 = LV_OPA_COVER;
}
else {
xr0 = xr;
xr1 = xr;
dsc->res.opa = LV_OPA_COVER;
}
lv_color_t c0;
if(xr0 == LV_OPA_TRANSP) c0 = c01;
else if(xr0 == LV_OPA_COVER) c0 = c00;
else c0 = lv_color_mix(c00, c01, xr0);
lv_color_t c1;
if(xr1 == LV_OPA_TRANSP) c1 = c11;
else if(xr1 == LV_OPA_COVER) c1 = c10;
else c1 = lv_color_mix(c10, c11, xr1);
if(yr == LV_OPA_TRANSP) dsc->res.color = c1;
else if(yr == LV_OPA_COVER) dsc->res.color = c0;
else dsc->res.color = lv_color_mix(c0, c1, yr);
return true;
}
#endif
/**********************
* STATIC FUNCTIONS
**********************/

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/**
* @file lv_img_buf.h
*
*/
#ifndef LV_IMG_BUF_H
#define LV_IMG_BUF_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include <stdbool.h>
#include "../lv_misc/lv_color.h"
#include "../lv_misc/lv_area.h"
/*********************
* DEFINES
*********************/
/*If image pixels contains alpha we need to know how much byte is a pixel*/
#if LV_COLOR_DEPTH == 1 || LV_COLOR_DEPTH == 8
#define LV_IMG_PX_SIZE_ALPHA_BYTE 2
#elif LV_COLOR_DEPTH == 16
#define LV_IMG_PX_SIZE_ALPHA_BYTE 3
#elif LV_COLOR_DEPTH == 32
#define LV_IMG_PX_SIZE_ALPHA_BYTE 4
#endif
#define LV_IMG_BUF_SIZE_TRUE_COLOR(w, h) ((LV_COLOR_SIZE / 8) * w * h)
#define LV_IMG_BUF_SIZE_TRUE_COLOR_CHROMA_KEYED(w, h) ((LV_COLOR_SIZE / 8) * w * h)
#define LV_IMG_BUF_SIZE_TRUE_COLOR_ALPHA(w, h) (LV_IMG_PX_SIZE_ALPHA_BYTE * w * h)
/*+ 1: to be sure no fractional row*/
#define LV_IMG_BUF_SIZE_ALPHA_1BIT(w, h) ((((w / 8) + 1) * h))
#define LV_IMG_BUF_SIZE_ALPHA_2BIT(w, h) ((((w / 4) + 1) * h))
#define LV_IMG_BUF_SIZE_ALPHA_4BIT(w, h) ((((w / 2) + 1) * h))
#define LV_IMG_BUF_SIZE_ALPHA_8BIT(w, h) ((w * h))
/*4 * X: for palette*/
#define LV_IMG_BUF_SIZE_INDEXED_1BIT(w, h) (LV_IMG_BUF_SIZE_ALPHA_1BIT(w, h) + 4 * 2)
#define LV_IMG_BUF_SIZE_INDEXED_2BIT(w, h) (LV_IMG_BUF_SIZE_ALPHA_2BIT(w, h) + 4 * 4)
#define LV_IMG_BUF_SIZE_INDEXED_4BIT(w, h) (LV_IMG_BUF_SIZE_ALPHA_4BIT(w, h) + 4 * 16)
#define LV_IMG_BUF_SIZE_INDEXED_8BIT(w, h) (LV_IMG_BUF_SIZE_ALPHA_8BIT(w, h) + 4 * 256)
#define LV_IMG_ZOOM_NONE 256
/**********************
* TYPEDEFS
**********************/
/*Image color format*/
enum {
LV_IMG_CF_UNKNOWN = 0,
LV_IMG_CF_RAW, /**< Contains the file as it is. Needs custom decoder function*/
LV_IMG_CF_RAW_ALPHA, /**< Contains the file as it is. The image has alpha. Needs custom decoder
function*/
LV_IMG_CF_RAW_CHROMA_KEYED, /**< Contains the file as it is. The image is chroma keyed. Needs
custom decoder function*/
LV_IMG_CF_TRUE_COLOR, /**< Color format and depth should match with LV_COLOR settings*/
LV_IMG_CF_TRUE_COLOR_ALPHA, /**< Same as `LV_IMG_CF_TRUE_COLOR` but every pixel has an alpha byte*/
LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED, /**< Same as `LV_IMG_CF_TRUE_COLOR` but LV_COLOR_TRANSP pixels
will be transparent*/
LV_IMG_CF_INDEXED_1BIT, /**< Can have 2 different colors in a palette (always chroma keyed)*/
LV_IMG_CF_INDEXED_2BIT, /**< Can have 4 different colors in a palette (always chroma keyed)*/
LV_IMG_CF_INDEXED_4BIT, /**< Can have 16 different colors in a palette (always chroma keyed)*/
LV_IMG_CF_INDEXED_8BIT, /**< Can have 256 different colors in a palette (always chroma keyed)*/
LV_IMG_CF_ALPHA_1BIT, /**< Can have one color and it can be drawn or not*/
LV_IMG_CF_ALPHA_2BIT, /**< Can have one color but 4 different alpha value*/
LV_IMG_CF_ALPHA_4BIT, /**< Can have one color but 16 different alpha value*/
LV_IMG_CF_ALPHA_8BIT, /**< Can have one color but 256 different alpha value*/
LV_IMG_CF_RESERVED_15, /**< Reserved for further use. */
LV_IMG_CF_RESERVED_16, /**< Reserved for further use. */
LV_IMG_CF_RESERVED_17, /**< Reserved for further use. */
LV_IMG_CF_RESERVED_18, /**< Reserved for further use. */
LV_IMG_CF_RESERVED_19, /**< Reserved for further use. */
LV_IMG_CF_RESERVED_20, /**< Reserved for further use. */
LV_IMG_CF_RESERVED_21, /**< Reserved for further use. */
LV_IMG_CF_RESERVED_22, /**< Reserved for further use. */
LV_IMG_CF_RESERVED_23, /**< Reserved for further use. */
LV_IMG_CF_USER_ENCODED_0, /**< User holder encoding format. */
LV_IMG_CF_USER_ENCODED_1, /**< User holder encoding format. */
LV_IMG_CF_USER_ENCODED_2, /**< User holder encoding format. */
LV_IMG_CF_USER_ENCODED_3, /**< User holder encoding format. */
LV_IMG_CF_USER_ENCODED_4, /**< User holder encoding format. */
LV_IMG_CF_USER_ENCODED_5, /**< User holder encoding format. */
LV_IMG_CF_USER_ENCODED_6, /**< User holder encoding format. */
LV_IMG_CF_USER_ENCODED_7, /**< User holder encoding format. */
};
typedef uint8_t lv_img_cf_t;
/**
* LVGL image header
*/
typedef struct {
/* The first 8 bit is very important to distinguish the different source types.
* For more info see `lv_img_get_src_type()` in lv_img.c */
uint32_t cf : 5; /* Color format: See `lv_img_color_format_t`*/
uint32_t always_zero : 3; /*It the upper bits of the first byte. Always zero to look like a
non-printable character*/
uint32_t reserved : 2; /*Reserved to be used later*/
uint32_t w : 11; /*Width of the image map*/
uint32_t h : 11; /*Height of the image map*/
} lv_img_header_t;
/** Image header it is compatible with
* the result from image converter utility*/
typedef struct {
lv_img_header_t header;
uint32_t data_size;
const uint8_t * data;
} lv_img_dsc_t;
typedef struct {
struct {
const void * src; /*image source (array of pixels)*/
lv_coord_t src_w; /*width of the image source*/
lv_coord_t src_h; /*height of the image source*/
lv_coord_t pivot_x; /*pivot x*/
lv_coord_t pivot_y; /* pivot y*/
int16_t angle; /*angle to rotate*/
uint16_t zoom; /*256 no zoom, 128 half size, 512 double size*/
lv_color_t color; /*a color used for `LV_IMG_CF_INDEXED_1/2/4/8BIT` color formats*/
lv_img_cf_t cf; /*color format of the image to rotate*/
bool antialias;
} cfg;
struct {
lv_color_t color;
lv_opa_t opa;
} res;
struct {
lv_img_dsc_t img_dsc;
int32_t pivot_x_256;
int32_t pivot_y_256;
int32_t sinma;
int32_t cosma;
uint8_t chroma_keyed : 1;
uint8_t has_alpha : 1;
uint8_t native_color : 1;
uint16_t zoom_inv;
/*Runtime data*/
lv_coord_t xs;
lv_coord_t ys;
lv_coord_t xs_int;
lv_coord_t ys_int;
uint32_t pxi;
uint8_t px_size;
} tmp;
} lv_img_transform_dsc_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Allocate an image buffer in RAM
* @param w width of image
* @param h height of image
* @param cf a color format (`LV_IMG_CF_...`)
* @return an allocated image, or NULL on failure
*/
lv_img_dsc_t * lv_img_buf_alloc(lv_coord_t w, lv_coord_t h, lv_img_cf_t cf);
/**
* Get the color of an image's pixel
* @param dsc an image descriptor
* @param x x coordinate of the point to get
* @param y x coordinate of the point to get
* @param color the color of the image. In case of `LV_IMG_CF_ALPHA_1/2/4/8` this color is used.
* Not used in other cases.
* @param safe true: check out of bounds
* @return color of the point
*/
lv_color_t lv_img_buf_get_px_color(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_color_t color);
/**
* Get the alpha value of an image's pixel
* @param dsc pointer to an image descriptor
* @param x x coordinate of the point to set
* @param y x coordinate of the point to set
* @param safe true: check out of bounds
* @return alpha value of the point
*/
lv_opa_t lv_img_buf_get_px_alpha(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y);
/**
* Set the color of a pixel of an image. The alpha channel won't be affected.
* @param dsc pointer to an image descriptor
* @param x x coordinate of the point to set
* @param y x coordinate of the point to set
* @param c color of the point
* @param safe true: check out of bounds
*/
void lv_img_buf_set_px_color(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_color_t c);
/**
* Set the alpha value of a pixel of an image. The color won't be affected
* @param dsc pointer to an image descriptor
* @param x x coordinate of the point to set
* @param y x coordinate of the point to set
* @param opa the desired opacity
* @param safe true: check out of bounds
*/
void lv_img_buf_set_px_alpha(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_opa_t opa);
/**
* Set the palette color of an indexed image. Valid only for `LV_IMG_CF_INDEXED1/2/4/8`
* @param dsc pointer to an image descriptor
* @param id the palette color to set:
* - for `LV_IMG_CF_INDEXED1`: 0..1
* - for `LV_IMG_CF_INDEXED2`: 0..3
* - for `LV_IMG_CF_INDEXED4`: 0..15
* - for `LV_IMG_CF_INDEXED8`: 0..255
* @param c the color to set
*/
void lv_img_buf_set_palette(lv_img_dsc_t * dsc, uint8_t id, lv_color_t c);
/**
* Free an allocated image buffer
* @param dsc image buffer to free
*/
void lv_img_buf_free(lv_img_dsc_t * dsc);
/**
* Get the memory consumption of a raw bitmap, given color format and dimensions.
* @param w width
* @param h height
* @param cf color format
* @return size in bytes
*/
uint32_t lv_img_buf_get_img_size(lv_coord_t w, lv_coord_t h, lv_img_cf_t cf);
#if LV_USE_IMG_TRANSFORM
/**
* Initialize a descriptor to rotate an image
* @param dsc pointer to an `lv_img_transform_dsc_t` variable whose `cfg` field is initialized
*/
void _lv_img_buf_transform_init(lv_img_transform_dsc_t * dsc);
/**
* Continue transformation by taking the neighbors into account
* @param dsc pointer to the transformation descriptor
*/
bool _lv_img_buf_transform_anti_alias(lv_img_transform_dsc_t * dsc);
/**
* Get which color and opa would come to a pixel if it were rotated
* @param dsc a descriptor initialized by `lv_img_buf_rotate_init`
* @param x the coordinate which color and opa should be get
* @param y the coordinate which color and opa should be get
* @return true: there is valid pixel on these x/y coordinates; false: the rotated pixel was out of the image
* @note the result is written back to `dsc->res_color` and `dsc->res_opa`
*/
static inline bool _lv_img_buf_transform(lv_img_transform_dsc_t * dsc, lv_coord_t x, lv_coord_t y)
{
const uint8_t * src_u8 = (const uint8_t *)dsc->cfg.src;
/*Get the target point relative coordinates to the pivot*/
int32_t xt = x - dsc->cfg.pivot_x;
int32_t yt = y - dsc->cfg.pivot_y;
int32_t xs;
int32_t ys;
if(dsc->cfg.zoom == LV_IMG_ZOOM_NONE) {
/*Get the source pixel from the upscaled image*/
xs = ((dsc->tmp.cosma * xt - dsc->tmp.sinma * yt) >> (LV_TRIGO_SHIFT - 8)) + dsc->tmp.pivot_x_256;
ys = ((dsc->tmp.sinma * xt + dsc->tmp.cosma * yt) >> (LV_TRIGO_SHIFT - 8)) + dsc->tmp.pivot_y_256;
}
else if(dsc->cfg.angle == 0) {
xt *= dsc->tmp.zoom_inv;
yt *= dsc->tmp.zoom_inv;
xs = xt + dsc->tmp.pivot_x_256;
ys = yt + dsc->tmp.pivot_y_256;
}
else {
xt *= dsc->tmp.zoom_inv;
yt *= dsc->tmp.zoom_inv;
xs = ((dsc->tmp.cosma * xt - dsc->tmp.sinma * yt) >> (LV_TRIGO_SHIFT)) + dsc->tmp.pivot_x_256;
ys = ((dsc->tmp.sinma * xt + dsc->tmp.cosma * yt) >> (LV_TRIGO_SHIFT)) + dsc->tmp.pivot_y_256;
}
/*Get the integer part of the source pixel*/
int32_t xs_int = xs >> 8;
int32_t ys_int = ys >> 8;
if(xs_int >= dsc->cfg.src_w) return false;
else if(xs_int < 0) return false;
if(ys_int >= dsc->cfg.src_h) return false;
else if(ys_int < 0) return false;
uint8_t px_size;
uint32_t pxi;
if(dsc->tmp.native_color) {
if(dsc->tmp.has_alpha == 0) {
px_size = LV_COLOR_SIZE >> 3;
pxi = dsc->cfg.src_w * ys_int * px_size + xs_int * px_size;
_lv_memcpy_small(&dsc->res.color, &src_u8[pxi], px_size);
}
else {
px_size = LV_IMG_PX_SIZE_ALPHA_BYTE;
pxi = dsc->cfg.src_w * ys_int * px_size + xs_int * px_size;
_lv_memcpy_small(&dsc->res.color, &src_u8[pxi], px_size - 1);
dsc->res.opa = src_u8[pxi + px_size - 1];
}
}
else {
pxi = 0; /*unused*/
px_size = 0; /*unused*/
dsc->res.color = lv_img_buf_get_px_color(&dsc->tmp.img_dsc, xs_int, ys_int, dsc->cfg.color);
dsc->res.opa = lv_img_buf_get_px_alpha(&dsc->tmp.img_dsc, xs_int, ys_int);
}
if(dsc->tmp.chroma_keyed) {
lv_color_t ct = LV_COLOR_TRANSP;
if(dsc->res.color.full == ct.full) return false;
}
if(dsc->cfg.antialias == false) return true;
dsc->tmp.xs = xs;
dsc->tmp.ys = ys;
dsc->tmp.xs_int = xs_int;
dsc->tmp.ys_int = ys_int;
dsc->tmp.pxi = pxi;
dsc->tmp.px_size = px_size;
bool ret;
ret = _lv_img_buf_transform_anti_alias(dsc);
return ret;
}
#endif
/**
* Get the area of a rectangle if its rotated and scaled
* @param res store the coordinates here
* @param w width of the rectangle to transform
* @param h height of the rectangle to transform
* @param angle angle of rotation
* @param zoom zoom, (256 no zoom)
* @param pivot x,y pivot coordinates of rotation
*/
void _lv_img_buf_get_transformed_area(lv_area_t * res, lv_coord_t w, lv_coord_t h, int16_t angle, uint16_t zoom,
lv_point_t * pivot);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_IMG_BUF_H*/

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/**
* @file lv_img_cache.c
*
*/
/*********************
* INCLUDES
*********************/
#include "../lv_misc/lv_debug.h"
#include "lv_img_cache.h"
#include "lv_img_decoder.h"
#include "lv_draw_img.h"
#include "../lv_hal/lv_hal_tick.h"
#include "../lv_misc/lv_gc.h"
#if defined(LV_GC_INCLUDE)
#include LV_GC_INCLUDE
#endif /* LV_ENABLE_GC */
/*********************
* DEFINES
*********************/
/*Decrement life with this value in every open*/
#define LV_IMG_CACHE_AGING 1
/*Boost life by this factor (multiply time_to_open with this value)*/
#define LV_IMG_CACHE_LIFE_GAIN 1
/*Don't let life to be greater than this limit because it would require a lot of time to
* "die" from very high values */
#define LV_IMG_CACHE_LIFE_LIMIT 1000
#if LV_IMG_CACHE_DEF_SIZE < 1
#error "LV_IMG_CACHE_DEF_SIZE must be >= 1. See lv_conf.h"
#endif
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
static uint16_t entry_cnt;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Open an image using the image decoder interface and cache it.
* The image will be left open meaning if the image decoder open callback allocated memory then it will remain.
* The image is closed if a new image is opened and the new image takes its place in the cache.
* @param src source of the image. Path to file or pointer to an `lv_img_dsc_t` variable
* @param style style of the image
* @return pointer to the cache entry or NULL if can open the image
*/
lv_img_cache_entry_t * _lv_img_cache_open(const void * src, lv_color_t color)
{
if(entry_cnt == 0) {
LV_LOG_WARN("lv_img_cache_open: the cache size is 0");
return NULL;
}
lv_img_cache_entry_t * cache = LV_GC_ROOT(_lv_img_cache_array);
/*Decrement all lifes. Make the entries older*/
uint16_t i;
for(i = 0; i < entry_cnt; i++) {
if(cache[i].life > INT32_MIN + LV_IMG_CACHE_AGING) {
cache[i].life -= LV_IMG_CACHE_AGING;
}
}
/*Is the image cached?*/
lv_img_cache_entry_t * cached_src = NULL;
for(i = 0; i < entry_cnt; i++) {
bool match = false;
lv_img_src_t src_type = lv_img_src_get_type(cache[i].dec_dsc.src);
if(src_type == LV_IMG_SRC_VARIABLE) {
if(cache[i].dec_dsc.src == src && cache[i].dec_dsc.color.full == color.full) match = true;
}
else if(src_type == LV_IMG_SRC_FILE) {
if(strcmp(cache[i].dec_dsc.src, src) == 0) match = true;
}
if(match) {
/* If opened increment its life.
* Image difficult to open should live longer to keep avoid frequent their recaching.
* Therefore increase `life` with `time_to_open`*/
cached_src = &cache[i];
cached_src->life += cached_src->dec_dsc.time_to_open * LV_IMG_CACHE_LIFE_GAIN;
if(cached_src->life > LV_IMG_CACHE_LIFE_LIMIT) cached_src->life = LV_IMG_CACHE_LIFE_LIMIT;
LV_LOG_TRACE("image draw: image found in the cache");
break;
}
}
/*The image is not cached then cache it now*/
if(cached_src == NULL) {
/*Find an entry to reuse. Select the entry with the least life*/
cached_src = &cache[0];
for(i = 1; i < entry_cnt; i++) {
if(cache[i].life < cached_src->life) {
cached_src = &cache[i];
}
}
/*Close the decoder to reuse if it was opened (has a valid source)*/
if(cached_src->dec_dsc.src) {
lv_img_decoder_close(&cached_src->dec_dsc);
LV_LOG_INFO("image draw: cache miss, close and reuse an entry");
}
else {
LV_LOG_INFO("image draw: cache miss, cached to an empty entry");
}
/*Open the image and measure the time to open*/
uint32_t t_start;
t_start = lv_tick_get();
cached_src->dec_dsc.time_to_open = 0;
lv_res_t open_res = lv_img_decoder_open(&cached_src->dec_dsc, src, color);
if(open_res == LV_RES_INV) {
LV_LOG_WARN("Image draw cannot open the image resource");
lv_img_decoder_close(&cached_src->dec_dsc);
_lv_memset_00(&cached_src->dec_dsc, sizeof(lv_img_decoder_dsc_t));
_lv_memset_00(cached_src, sizeof(lv_img_cache_entry_t));
cached_src->life = INT32_MIN; /*Make the empty entry very "weak" to force its use */
return NULL;
}
cached_src->life = 0;
/*If `time_to_open` was not set in the open function set it here*/
if(cached_src->dec_dsc.time_to_open == 0) {
cached_src->dec_dsc.time_to_open = lv_tick_elaps(t_start);
}
if(cached_src->dec_dsc.time_to_open == 0) cached_src->dec_dsc.time_to_open = 1;
}
return cached_src;
}
/**
* Set the number of images to be cached.
* More cached images mean more opened image at same time which might mean more memory usage.
* E.g. if 20 PNG or JPG images are open in the RAM they consume memory while opened in the cache.
* @param new_entry_cnt number of image to cache
*/
void lv_img_cache_set_size(uint16_t new_entry_cnt)
{
if(LV_GC_ROOT(_lv_img_cache_array) != NULL) {
/*Clean the cache before free it*/
lv_img_cache_invalidate_src(NULL);
lv_mem_free(LV_GC_ROOT(_lv_img_cache_array));
}
/*Reallocate the cache*/
LV_GC_ROOT(_lv_img_cache_array) = lv_mem_alloc(sizeof(lv_img_cache_entry_t) * new_entry_cnt);
LV_ASSERT_MEM(LV_GC_ROOT(_lv_img_cache_array));
if(LV_GC_ROOT(_lv_img_cache_array) == NULL) {
entry_cnt = 0;
return;
}
entry_cnt = new_entry_cnt;
/*Clean the cache*/
uint16_t i;
for(i = 0; i < entry_cnt; i++) {
_lv_memset_00(&LV_GC_ROOT(_lv_img_cache_array)[i].dec_dsc, sizeof(lv_img_decoder_dsc_t));
_lv_memset_00(&LV_GC_ROOT(_lv_img_cache_array)[i], sizeof(lv_img_cache_entry_t));
}
}
/**
* Invalidate an image source in the cache.
* Useful if the image source is updated therefore it needs to be cached again.
* @param src an image source path to a file or pointer to an `lv_img_dsc_t` variable.
*/
void lv_img_cache_invalidate_src(const void * src)
{
lv_img_cache_entry_t * cache = LV_GC_ROOT(_lv_img_cache_array);
uint16_t i;
for(i = 0; i < entry_cnt; i++) {
if(cache[i].dec_dsc.src == src || src == NULL) {
if(cache[i].dec_dsc.src != NULL) {
lv_img_decoder_close(&cache[i].dec_dsc);
}
_lv_memset_00(&cache[i].dec_dsc, sizeof(lv_img_decoder_dsc_t));
_lv_memset_00(&cache[i], sizeof(lv_img_cache_entry_t));
}
}
}
/**********************
* STATIC FUNCTIONS
**********************/

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/**
* @file lv_img_cache.h
*
*/
#ifndef LV_IMG_CACHE_H
#define LV_IMG_CACHE_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lv_img_decoder.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**
* When loading images from the network it can take a long time to download and decode the image.
*
* To avoid repeating this heavy load images can be cached.
*/
typedef struct {
lv_img_decoder_dsc_t dec_dsc; /**< Image information */
/** Count the cache entries's life. Add `time_tio_open` to `life` when the entry is used.
* Decrement all lifes by one every in every ::lv_img_cache_open.
* If life == 0 the entry can be reused */
int32_t life;
} lv_img_cache_entry_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Open an image using the image decoder interface and cache it.
* The image will be left open meaning if the image decoder open callback allocated memory then it will remain.
* The image is closed if a new image is opened and the new image takes its place in the cache.
* @param src source of the image. Path to file or pointer to an `lv_img_dsc_t` variable
* @param style style of the image
* @return pointer to the cache entry or NULL if can open the image
*/
lv_img_cache_entry_t * _lv_img_cache_open(const void * src, lv_color_t color);
/**
* Set the number of images to be cached.
* More cached images mean more opened image at same time which might mean more memory usage.
* E.g. if 20 PNG or JPG images are open in the RAM they consume memory while opened in the cache.
* @param new_entry_cnt number of image to cache
*/
void lv_img_cache_set_size(uint16_t new_slot_num);
/**
* Invalidate an image source in the cache.
* Useful if the image source is updated therefore it needs to be cached again.
* @param src an image source path to a file or pointer to an `lv_img_dsc_t` variable.
*/
void lv_img_cache_invalidate_src(const void * src);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_IMG_CACHE_H*/

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@@ -0,0 +1,786 @@
/**
* @file lv_img_decoder.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_img_decoder.h"
#include "../lv_misc/lv_debug.h"
#include "../lv_draw/lv_draw_img.h"
#include "../lv_misc/lv_ll.h"
#include "../lv_misc/lv_color.h"
#include "../lv_misc/lv_gc.h"
#if defined(LV_GC_INCLUDE)
#include LV_GC_INCLUDE
#endif /* LV_ENABLE_GC */
/*********************
* DEFINES
*********************/
#define CF_BUILT_IN_FIRST LV_IMG_CF_TRUE_COLOR
#define CF_BUILT_IN_LAST LV_IMG_CF_ALPHA_8BIT
/**********************
* TYPEDEFS
**********************/
typedef struct {
#if LV_USE_FILESYSTEM
lv_fs_file_t * f;
#endif
lv_color_t * palette;
lv_opa_t * opa;
} lv_img_decoder_built_in_data_t;
/**********************
* STATIC PROTOTYPES
**********************/
static lv_res_t lv_img_decoder_built_in_line_true_color(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y,
lv_coord_t len, uint8_t * buf);
static lv_res_t lv_img_decoder_built_in_line_alpha(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y,
lv_coord_t len, uint8_t * buf);
static lv_res_t lv_img_decoder_built_in_line_indexed(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y,
lv_coord_t len, uint8_t * buf);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize the image decoder module
* */
void _lv_img_decoder_init(void)
{
_lv_ll_init(&LV_GC_ROOT(_lv_img_defoder_ll), sizeof(lv_img_decoder_t));
lv_img_decoder_t * decoder;
/*Create a decoder for the built in color format*/
decoder = lv_img_decoder_create();
if(decoder == NULL) {
LV_LOG_WARN("lv_img_decoder_init: out of memory");
LV_ASSERT_MEM(decoder);
return;
}
lv_img_decoder_set_info_cb(decoder, lv_img_decoder_built_in_info);
lv_img_decoder_set_open_cb(decoder, lv_img_decoder_built_in_open);
lv_img_decoder_set_read_line_cb(decoder, lv_img_decoder_built_in_read_line);
lv_img_decoder_set_close_cb(decoder, lv_img_decoder_built_in_close);
}
/**
* Get information about an image.
* Try the created image decoder one by one. Once one is able to get info that info will be used.
* @param src the image source. E.g. file name or variable.
* @param header the image info will be stored here
* @return LV_RES_OK: success; LV_RES_INV: wasn't able to get info about the image
*/
lv_res_t lv_img_decoder_get_info(const char * src, lv_img_header_t * header)
{
header->always_zero = 0;
lv_res_t res = LV_RES_INV;
lv_img_decoder_t * d;
_LV_LL_READ(LV_GC_ROOT(_lv_img_defoder_ll), d) {
res = LV_RES_INV;
if(d->info_cb) {
res = d->info_cb(d, src, header);
if(res == LV_RES_OK) break;
}
}
return res;
}
/**
* Open an image.
* Try the created image decoder one by one. Once one is able to open the image that decoder is save in `dsc`
* @param dsc describe a decoding session. Simply a pointer to an `lv_img_decoder_dsc_t` variable.
* @param src the image source. Can be
* 1) File name: E.g. "S:folder/img1.png" (The drivers needs to registered via `lv_fs_add_drv()`)
* 2) Variable: Pointer to an `lv_img_dsc_t` variable
* 3) Symbol: E.g. `LV_SYMBOL_OK`
* @param style the style of the image
* @return LV_RES_OK: opened the image. `dsc->img_data` and `dsc->header` are set.
* LV_RES_INV: none of the registered image decoders were able to open the image.
*/
lv_res_t lv_img_decoder_open(lv_img_decoder_dsc_t * dsc, const void * src, lv_color_t color)
{
dsc->color = color;
dsc->src_type = lv_img_src_get_type(src);
dsc->user_data = NULL;
if(dsc->src_type == LV_IMG_SRC_FILE) {
size_t fnlen = strlen(src);
dsc->src = lv_mem_alloc(fnlen + 1);
strcpy((char *)dsc->src, src);
}
else {
dsc->src = src;
}
lv_res_t res = LV_RES_INV;
lv_img_decoder_t * d;
_LV_LL_READ(LV_GC_ROOT(_lv_img_defoder_ll), d) {
/*Info an Open callbacks are required*/
if(d->info_cb == NULL || d->open_cb == NULL) continue;
res = d->info_cb(d, src, &dsc->header);
if(res != LV_RES_OK) continue;
dsc->error_msg = NULL;
dsc->img_data = NULL;
dsc->decoder = d;
res = d->open_cb(d, dsc);
/*Opened successfully. It is a good decoder to for this image source*/
if(res == LV_RES_OK) break;
}
if(res == LV_RES_INV) {
_lv_memset_00(dsc, sizeof(lv_img_decoder_dsc_t));
}
return res;
}
/**
* Read a line from an opened image
* @param dsc pointer to `lv_img_decoder_dsc_t` used in `lv_img_decoder_open`
* @param x start X coordinate (from left)
* @param y start Y coordinate (from top)
* @param len number of pixels to read
* @param buf store the data here
* @return LV_RES_OK: success; LV_RES_INV: an error occurred
*/
lv_res_t lv_img_decoder_read_line(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_coord_t len, uint8_t * buf)
{
lv_res_t res = LV_RES_INV;
if(dsc->decoder->read_line_cb) res = dsc->decoder->read_line_cb(dsc->decoder, dsc, x, y, len, buf);
return res;
}
/**
* Close a decoding session
* @param dsc pointer to `lv_img_decoder_dsc_t` used in `lv_img_decoder_open`
*/
void lv_img_decoder_close(lv_img_decoder_dsc_t * dsc)
{
if(dsc->decoder) {
if(dsc->decoder->close_cb) dsc->decoder->close_cb(dsc->decoder, dsc);
if(dsc->src_type == LV_IMG_SRC_FILE) {
lv_mem_free(dsc->src);
dsc->src = NULL;
}
}
}
/**
* Create a new image decoder
* @return pointer to the new image decoder
*/
lv_img_decoder_t * lv_img_decoder_create(void)
{
lv_img_decoder_t * decoder;
decoder = _lv_ll_ins_head(&LV_GC_ROOT(_lv_img_defoder_ll));
LV_ASSERT_MEM(decoder);
if(decoder == NULL) return NULL;
_lv_memset_00(decoder, sizeof(lv_img_decoder_t));
return decoder;
}
/**
* Delete an image decoder
* @param decoder pointer to an image decoder
*/
void lv_img_decoder_delete(lv_img_decoder_t * decoder)
{
_lv_ll_remove(&LV_GC_ROOT(_lv_img_defoder_ll), decoder);
lv_mem_free(decoder);
}
/**
* Set a callback to get information about the image
* @param decoder pointer to an image decoder
* @param info_cb a function to collect info about an image (fill an `lv_img_header_t` struct)
*/
void lv_img_decoder_set_info_cb(lv_img_decoder_t * decoder, lv_img_decoder_info_f_t info_cb)
{
decoder->info_cb = info_cb;
}
/**
* Set a callback to open an image
* @param decoder pointer to an image decoder
* @param open_cb a function to open an image
*/
void lv_img_decoder_set_open_cb(lv_img_decoder_t * decoder, lv_img_decoder_open_f_t open_cb)
{
decoder->open_cb = open_cb;
}
/**
* Set a callback to a decoded line of an image
* @param decoder pointer to an image decoder
* @param read_line_cb a function to read a line of an image
*/
void lv_img_decoder_set_read_line_cb(lv_img_decoder_t * decoder, lv_img_decoder_read_line_f_t read_line_cb)
{
decoder->read_line_cb = read_line_cb;
}
/**
* Set a callback to close a decoding session. E.g. close files and free other resources.
* @param decoder pointer to an image decoder
* @param close_cb a function to close a decoding session
*/
void lv_img_decoder_set_close_cb(lv_img_decoder_t * decoder, lv_img_decoder_close_f_t close_cb)
{
decoder->close_cb = close_cb;
}
/**
* Get info about a built-in image
* @param decoder the decoder where this function belongs
* @param src the image source: pointer to an `lv_img_dsc_t` variable, a file path or a symbol
* @param header store the image data here
* @return LV_RES_OK: the info is successfully stored in `header`; LV_RES_INV: unknown format or other error.
*/
lv_res_t lv_img_decoder_built_in_info(lv_img_decoder_t * decoder, const void * src, lv_img_header_t * header)
{
(void)decoder; /*Unused*/
lv_img_src_t src_type = lv_img_src_get_type(src);
if(src_type == LV_IMG_SRC_VARIABLE) {
lv_img_cf_t cf = ((lv_img_dsc_t *)src)->header.cf;
if(cf < CF_BUILT_IN_FIRST || cf > CF_BUILT_IN_LAST) return LV_RES_INV;
header->w = ((lv_img_dsc_t *)src)->header.w;
header->h = ((lv_img_dsc_t *)src)->header.h;
header->cf = ((lv_img_dsc_t *)src)->header.cf;
}
#if LV_USE_FILESYSTEM
else if(src_type == LV_IMG_SRC_FILE) {
lv_fs_file_t file;
lv_fs_res_t res;
uint32_t rn;
res = lv_fs_open(&file, src, LV_FS_MODE_RD);
if(res == LV_FS_RES_OK) {
res = lv_fs_read(&file, header, sizeof(lv_img_header_t), &rn);
lv_fs_close(&file);
if(res != LV_FS_RES_OK || rn != sizeof(lv_img_header_t)) {
LV_LOG_WARN("Image get info get read file header");
return LV_RES_INV;
}
}
if(header->cf < CF_BUILT_IN_FIRST || header->cf > CF_BUILT_IN_LAST) return LV_RES_INV;
}
#endif
else if(src_type == LV_IMG_SRC_SYMBOL) {
/*The size depend on the font but it is unknown here. It should be handled outside of the
* function*/
header->w = 1;
header->h = 1;
/* Symbols always have transparent parts. Important because of cover check in the design
* function. The actual value doesn't matter because lv_draw_label will draw it*/
header->cf = LV_IMG_CF_ALPHA_1BIT;
}
else {
LV_LOG_WARN("Image get info found unknown src type");
return LV_RES_INV;
}
return LV_RES_OK;
}
/**
* Open a built in image
* @param decoder the decoder where this function belongs
* @param dsc pointer to decoder descriptor. `src`, `style` are already initialized in it.
* @return LV_RES_OK: the info is successfully stored in `header`; LV_RES_INV: unknown format or other error.
*/
lv_res_t lv_img_decoder_built_in_open(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc)
{
/*Open the file if it's a file*/
if(dsc->src_type == LV_IMG_SRC_FILE) {
#if LV_USE_FILESYSTEM
/*Support only "*.bin" files*/
if(strcmp(lv_fs_get_ext(dsc->src), "bin")) return LV_RES_INV;
lv_fs_file_t f;
lv_fs_res_t res = lv_fs_open(&f, dsc->src, LV_FS_MODE_RD);
if(res != LV_FS_RES_OK) {
LV_LOG_WARN("Built-in image decoder can't open the file");
return LV_RES_INV;
}
/*If the file was open successfully save the file descriptor*/
if(dsc->user_data == NULL) {
dsc->user_data = lv_mem_alloc(sizeof(lv_img_decoder_built_in_data_t));
LV_ASSERT_MEM(dsc->user_data);
if(dsc->user_data == NULL) {
LV_LOG_ERROR("img_decoder_built_in_open: out of memory");
return LV_RES_INV;
}
_lv_memset_00(dsc->user_data, sizeof(lv_img_decoder_built_in_data_t));
}
lv_img_decoder_built_in_data_t * user_data = dsc->user_data;
user_data->f = lv_mem_alloc(sizeof(f));
LV_ASSERT_MEM(user_data->f);
if(user_data->f == NULL) {
LV_LOG_ERROR("img_decoder_built_in_open: out of memory");
lv_img_decoder_built_in_close(decoder, dsc);
return LV_RES_INV;
}
_lv_memcpy_small(user_data->f, &f, sizeof(f));
#else
LV_LOG_WARN("Image built-in decoder cannot read file because LV_USE_FILESYSTEM = 0");
return LV_RES_INV;
#endif
}
else if(dsc->src_type == LV_IMG_SRC_VARIABLE) {
/*The variables should have valid data*/
if(((lv_img_dsc_t *)dsc->src)->data == NULL) {
return LV_RES_INV;
}
}
lv_img_cf_t cf = dsc->header.cf;
/*Process true color formats*/
if(cf == LV_IMG_CF_TRUE_COLOR || cf == LV_IMG_CF_TRUE_COLOR_ALPHA || cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED) {
if(dsc->src_type == LV_IMG_SRC_VARIABLE) {
/* In case of uncompressed formats the image stored in the ROM/RAM.
* So simply give its pointer*/
dsc->img_data = ((lv_img_dsc_t *)dsc->src)->data;
return LV_RES_OK;
}
else {
/*If it's a file it need to be read line by line later*/
dsc->img_data = NULL;
return LV_RES_OK;
}
}
/*Process indexed images. Build a palette*/
else if(cf == LV_IMG_CF_INDEXED_1BIT || cf == LV_IMG_CF_INDEXED_2BIT || cf == LV_IMG_CF_INDEXED_4BIT ||
cf == LV_IMG_CF_INDEXED_8BIT) {
#if LV_IMG_CF_INDEXED
uint8_t px_size = lv_img_cf_get_px_size(cf);
uint32_t palette_size = 1 << px_size;
/*Allocate the palette*/
if(dsc->user_data == NULL) {
dsc->user_data = lv_mem_alloc(sizeof(lv_img_decoder_built_in_data_t));
LV_ASSERT_MEM(dsc->user_data);
if(dsc->user_data == NULL) {
LV_LOG_ERROR("img_decoder_built_in_open: out of memory");
lv_img_decoder_built_in_close(decoder, dsc);
return LV_RES_INV;
}
_lv_memset_00(dsc->user_data, sizeof(lv_img_decoder_built_in_data_t));
}
lv_img_decoder_built_in_data_t * user_data = dsc->user_data;
user_data->palette = lv_mem_alloc(palette_size * sizeof(lv_color_t));
LV_ASSERT_MEM(user_data->palette);
user_data->opa = lv_mem_alloc(palette_size * sizeof(lv_opa_t));
LV_ASSERT_MEM(user_data->opa);
if(user_data->palette == NULL || user_data->opa == NULL) {
LV_LOG_ERROR("img_decoder_built_in_open: out of memory");
lv_img_decoder_built_in_close(decoder, dsc);
return LV_RES_INV;
}
if(dsc->src_type == LV_IMG_SRC_FILE) {
/*Read the palette from file*/
#if LV_USE_FILESYSTEM
lv_fs_seek(user_data->f, 4); /*Skip the header*/
lv_color32_t cur_color;
uint32_t i;
for(i = 0; i < palette_size; i++) {
lv_fs_read(user_data->f, &cur_color, sizeof(lv_color32_t), NULL);
user_data->palette[i] = lv_color_make(cur_color.ch.red, cur_color.ch.green, cur_color.ch.blue);
user_data->opa[i] = cur_color.ch.alpha;
}
#else
LV_LOG_WARN("Image built-in decoder can read the palette because LV_USE_FILESYSTEM = 0");
return LV_RES_INV;
#endif
}
else {
/*The palette begins in the beginning of the image data. Just point to it.*/
lv_color32_t * palette_p = (lv_color32_t *)((lv_img_dsc_t *)dsc->src)->data;
uint32_t i;
for(i = 0; i < palette_size; i++) {
user_data->palette[i] = lv_color_make(palette_p[i].ch.red, palette_p[i].ch.green, palette_p[i].ch.blue);
user_data->opa[i] = palette_p[i].ch.alpha;
}
}
dsc->img_data = NULL;
return LV_RES_OK;
#else
LV_LOG_WARN("Indexed (palette) images are not enabled in lv_conf.h. See LV_IMG_CF_INDEXED");
return LV_RES_INV;
#endif
}
/*Alpha indexed images. */
else if(cf == LV_IMG_CF_ALPHA_1BIT || cf == LV_IMG_CF_ALPHA_2BIT || cf == LV_IMG_CF_ALPHA_4BIT ||
cf == LV_IMG_CF_ALPHA_8BIT) {
#if LV_IMG_CF_ALPHA
dsc->img_data = NULL;
return LV_RES_OK; /*Nothing to process*/
#else
LV_LOG_WARN("Alpha indexed images are not enabled in lv_conf.h. See LV_IMG_CF_ALPHA");
return LV_RES_INV;
#endif
}
/*Unknown format. Can't decode it.*/
else {
/*Free the potentially allocated memories*/
lv_img_decoder_built_in_close(decoder, dsc);
LV_LOG_WARN("Image decoder open: unknown color format")
return LV_RES_INV;
}
}
/**
* Decode `len` pixels starting from the given `x`, `y` coordinates and store them in `buf`.
* Required only if the "open" function can't return with the whole decoded pixel array.
* @param decoder pointer to the decoder the function associated with
* @param dsc pointer to decoder descriptor
* @param x start x coordinate
* @param y start y coordinate
* @param len number of pixels to decode
* @param buf a buffer to store the decoded pixels
* @return LV_RES_OK: ok; LV_RES_INV: failed
*/
lv_res_t lv_img_decoder_built_in_read_line(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc, lv_coord_t x,
lv_coord_t y, lv_coord_t len, uint8_t * buf)
{
(void)decoder; /*Unused*/
lv_res_t res = LV_RES_INV;
if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR || dsc->header.cf == LV_IMG_CF_TRUE_COLOR_ALPHA ||
dsc->header.cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED) {
/* For TRUE_COLOR images read line required only for files.
* For variables the image data was returned in `open`*/
if(dsc->src_type == LV_IMG_SRC_FILE) {
res = lv_img_decoder_built_in_line_true_color(dsc, x, y, len, buf);
}
}
else if(dsc->header.cf == LV_IMG_CF_ALPHA_1BIT || dsc->header.cf == LV_IMG_CF_ALPHA_2BIT ||
dsc->header.cf == LV_IMG_CF_ALPHA_4BIT || dsc->header.cf == LV_IMG_CF_ALPHA_8BIT) {
res = lv_img_decoder_built_in_line_alpha(dsc, x, y, len, buf);
}
else if(dsc->header.cf == LV_IMG_CF_INDEXED_1BIT || dsc->header.cf == LV_IMG_CF_INDEXED_2BIT ||
dsc->header.cf == LV_IMG_CF_INDEXED_4BIT || dsc->header.cf == LV_IMG_CF_INDEXED_8BIT) {
res = lv_img_decoder_built_in_line_indexed(dsc, x, y, len, buf);
}
else {
LV_LOG_WARN("Built-in image decoder read not supports the color format");
return LV_RES_INV;
}
return res;
}
/**
* Close the pending decoding. Free resources etc.
* @param decoder pointer to the decoder the function associated with
* @param dsc pointer to decoder descriptor
*/
void lv_img_decoder_built_in_close(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc)
{
(void)decoder; /*Unused*/
lv_img_decoder_built_in_data_t * user_data = dsc->user_data;
if(user_data) {
#if LV_USE_FILESYSTEM
if(user_data->f) {
lv_fs_close(user_data->f);
lv_mem_free(user_data->f);
}
#endif
if(user_data->palette) lv_mem_free(user_data->palette);
if(user_data->opa) lv_mem_free(user_data->opa);
lv_mem_free(user_data);
dsc->user_data = NULL;
}
}
/**********************
* STATIC FUNCTIONS
**********************/
static lv_res_t lv_img_decoder_built_in_line_true_color(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y,
lv_coord_t len, uint8_t * buf)
{
#if LV_USE_FILESYSTEM
lv_img_decoder_built_in_data_t * user_data = dsc->user_data;
lv_fs_res_t res;
uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf);
uint32_t pos = ((y * dsc->header.w + x) * px_size) >> 3;
pos += 4; /*Skip the header*/
res = lv_fs_seek(user_data->f, pos);
if(res != LV_FS_RES_OK) {
LV_LOG_WARN("Built-in image decoder seek failed");
return LV_RES_INV;
}
uint32_t btr = len * (px_size >> 3);
uint32_t br = 0;
lv_fs_read(user_data->f, buf, btr, &br);
if(res != LV_FS_RES_OK || btr != br) {
LV_LOG_WARN("Built-in image decoder read failed");
return LV_RES_INV;
}
return LV_RES_OK;
#else
LV_UNUSED(dsc);
LV_UNUSED(x);
LV_UNUSED(y);
LV_UNUSED(len);
LV_UNUSED(buf);
LV_LOG_WARN("Image built-in decoder cannot read file because LV_USE_FILESYSTEM = 0");
return LV_RES_INV;
#endif
}
static lv_res_t lv_img_decoder_built_in_line_alpha(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y,
lv_coord_t len, uint8_t * buf)
{
#if LV_IMG_CF_ALPHA
const lv_opa_t alpha1_opa_table[2] = {0, 255}; /*Opacity mapping with bpp = 1 (Just for compatibility)*/
const lv_opa_t alpha2_opa_table[4] = {0, 85, 170, 255}; /*Opacity mapping with bpp = 2*/
const lv_opa_t alpha4_opa_table[16] = {0, 17, 34, 51, /*Opacity mapping with bpp = 4*/
68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255
};
/*Simply fill the buffer with the color. Later only the alpha value will be modified.*/
lv_color_t bg_color = dsc->color;
lv_coord_t i;
for(i = 0; i < len; i++) {
#if LV_COLOR_DEPTH == 8 || LV_COLOR_DEPTH == 1
buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE] = bg_color.full;
#elif LV_COLOR_DEPTH == 16
/*Because of Alpha byte 16 bit color can start on odd address which can cause crash*/
buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE] = bg_color.full & 0xFF;
buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE + 1] = (bg_color.full >> 8) & 0xFF;
#elif LV_COLOR_DEPTH == 32
*((uint32_t *)&buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE]) = bg_color.full;
#else
#error "Invalid LV_COLOR_DEPTH. Check it in lv_conf.h"
#endif
}
const lv_opa_t * opa_table = NULL;
uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf);
uint16_t mask = (1 << px_size) - 1; /*E.g. px_size = 2; mask = 0x03*/
lv_coord_t w = 0;
uint32_t ofs = 0;
int8_t pos = 0;
switch(dsc->header.cf) {
case LV_IMG_CF_ALPHA_1BIT:
w = (dsc->header.w >> 3); /*E.g. w = 20 -> w = 2 + 1*/
if(dsc->header.w & 0x7) w++;
ofs += w * y + (x >> 3); /*First pixel*/
pos = 7 - (x & 0x7);
opa_table = alpha1_opa_table;
break;
case LV_IMG_CF_ALPHA_2BIT:
w = (dsc->header.w >> 2); /*E.g. w = 13 -> w = 3 + 1 (bytes)*/
if(dsc->header.w & 0x3) w++;
ofs += w * y + (x >> 2); /*First pixel*/
pos = 6 - ((x & 0x3) * 2);
opa_table = alpha2_opa_table;
break;
case LV_IMG_CF_ALPHA_4BIT:
w = (dsc->header.w >> 1); /*E.g. w = 13 -> w = 6 + 1 (bytes)*/
if(dsc->header.w & 0x1) w++;
ofs += w * y + (x >> 1); /*First pixel*/
pos = 4 - ((x & 0x1) * 4);
opa_table = alpha4_opa_table;
break;
case LV_IMG_CF_ALPHA_8BIT:
w = dsc->header.w; /*E.g. x = 7 -> w = 7 (bytes)*/
ofs += w * y + x; /*First pixel*/
pos = 0;
break;
}
#if LV_USE_FILESYSTEM
lv_img_decoder_built_in_data_t * user_data = dsc->user_data;
uint8_t * fs_buf = _lv_mem_buf_get(w);
#endif
const uint8_t * data_tmp = NULL;
if(dsc->src_type == LV_IMG_SRC_VARIABLE) {
const lv_img_dsc_t * img_dsc = dsc->src;
data_tmp = img_dsc->data + ofs;
}
else {
#if LV_USE_FILESYSTEM
lv_fs_seek(user_data->f, ofs + 4); /*+4 to skip the header*/
lv_fs_read(user_data->f, fs_buf, w, NULL);
data_tmp = fs_buf;
#else
LV_LOG_WARN("Image built-in alpha line reader can't read file because LV_USE_FILESYSTEM = 0");
data_tmp = NULL; /*To avoid warnings*/
return LV_RES_INV;
#endif
}
for(i = 0; i < len; i++) {
uint8_t val_act = (*data_tmp & (mask << pos)) >> pos;
buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE + LV_IMG_PX_SIZE_ALPHA_BYTE - 1] =
dsc->header.cf == LV_IMG_CF_ALPHA_8BIT ? val_act : opa_table[val_act];
pos -= px_size;
if(pos < 0) {
pos = 8 - px_size;
data_tmp++;
}
}
#if LV_USE_FILESYSTEM
_lv_mem_buf_release(fs_buf);
#endif
return LV_RES_OK;
#else
LV_LOG_WARN("Image built-in alpha line reader failed because LV_IMG_CF_ALPHA is 0 in lv_conf.h");
return LV_RES_INV;
#endif
}
static lv_res_t lv_img_decoder_built_in_line_indexed(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y,
lv_coord_t len, uint8_t * buf)
{
#if LV_IMG_CF_INDEXED
uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf);
uint16_t mask = (1 << px_size) - 1; /*E.g. px_size = 2; mask = 0x03*/
lv_coord_t w = 0;
int8_t pos = 0;
uint32_t ofs = 0;
switch(dsc->header.cf) {
case LV_IMG_CF_INDEXED_1BIT:
w = (dsc->header.w >> 3); /*E.g. w = 20 -> w = 2 + 1*/
if(dsc->header.w & 0x7) w++;
ofs += w * y + (x >> 3); /*First pixel*/
ofs += 8; /*Skip the palette*/
pos = 7 - (x & 0x7);
break;
case LV_IMG_CF_INDEXED_2BIT:
w = (dsc->header.w >> 2); /*E.g. w = 13 -> w = 3 + 1 (bytes)*/
if(dsc->header.w & 0x3) w++;
ofs += w * y + (x >> 2); /*First pixel*/
ofs += 16; /*Skip the palette*/
pos = 6 - ((x & 0x3) * 2);
break;
case LV_IMG_CF_INDEXED_4BIT:
w = (dsc->header.w >> 1); /*E.g. w = 13 -> w = 6 + 1 (bytes)*/
if(dsc->header.w & 0x1) w++;
ofs += w * y + (x >> 1); /*First pixel*/
ofs += 64; /*Skip the palette*/
pos = 4 - ((x & 0x1) * 4);
break;
case LV_IMG_CF_INDEXED_8BIT:
w = dsc->header.w; /*E.g. x = 7 -> w = 7 (bytes)*/
ofs += w * y + x; /*First pixel*/
ofs += 1024; /*Skip the palette*/
pos = 0;
break;
}
lv_img_decoder_built_in_data_t * user_data = dsc->user_data;
#if LV_USE_FILESYSTEM
uint8_t * fs_buf = _lv_mem_buf_get(w);
#endif
const uint8_t * data_tmp = NULL;
if(dsc->src_type == LV_IMG_SRC_VARIABLE) {
const lv_img_dsc_t * img_dsc = dsc->src;
data_tmp = img_dsc->data + ofs;
}
else {
#if LV_USE_FILESYSTEM
lv_fs_seek(user_data->f, ofs + 4); /*+4 to skip the header*/
lv_fs_read(user_data->f, fs_buf, w, NULL);
data_tmp = fs_buf;
#else
LV_LOG_WARN("Image built-in indexed line reader can't read file because LV_USE_FILESYSTEM = 0");
data_tmp = NULL; /*To avoid warnings*/
return LV_RES_INV;
#endif
}
lv_coord_t i;
for(i = 0; i < len; i++) {
uint8_t val_act = (*data_tmp & (mask << pos)) >> pos;
lv_color_t color = user_data->palette[val_act];
#if LV_COLOR_DEPTH == 8 || LV_COLOR_DEPTH == 1
buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE] = color.full;
#elif LV_COLOR_DEPTH == 16
/*Because of Alpha byte 16 bit color can start on odd address which can cause crash*/
buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE] = color.full & 0xFF;
buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE + 1] = (color.full >> 8) & 0xFF;
#elif LV_COLOR_DEPTH == 32
*((uint32_t *)&buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE]) = color.full;
#else
#error "Invalid LV_COLOR_DEPTH. Check it in lv_conf.h"
#endif
buf[i * LV_IMG_PX_SIZE_ALPHA_BYTE + LV_IMG_PX_SIZE_ALPHA_BYTE - 1] = user_data->opa[val_act];
pos -= px_size;
if(pos < 0) {
pos = 8 - px_size;
data_tmp++;
}
}
#if LV_USE_FILESYSTEM
_lv_mem_buf_release(fs_buf);
#endif
return LV_RES_OK;
#else
LV_LOG_WARN("Image built-in indexed line reader failed because LV_IMG_CF_INDEXED is 0 in lv_conf.h");
return LV_RES_INV;
#endif
}

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/**
* @file lv_img_decoder.h
*
*/
#ifndef LV_IMG_DEOCER_H
#define LV_IMG_DEOCER_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include <stdint.h>
#include "lv_img_buf.h"
#include "../lv_misc/lv_fs.h"
#include "../lv_misc/lv_types.h"
#include "../lv_misc/lv_area.h"
#include "../lv_core/lv_style.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**
* Source of image. */
enum {
LV_IMG_SRC_VARIABLE, /** Binary/C variable */
LV_IMG_SRC_FILE, /** File in filesystem */
LV_IMG_SRC_SYMBOL, /** Symbol (@ref lv_symbol_def.h) */
LV_IMG_SRC_UNKNOWN, /** Unknown source */
};
typedef uint8_t lv_img_src_t;
/* Decoder function definitions */
struct _lv_img_decoder;
struct _lv_img_decoder_dsc;
/**
* Get info from an image and store in the `header`
* @param src the image source. Can be a pointer to a C array or a file name (Use
* `lv_img_src_get_type` to determine the type)
* @param header store the info here
* @return LV_RES_OK: info written correctly; LV_RES_INV: failed
*/
typedef lv_res_t (*lv_img_decoder_info_f_t)(struct _lv_img_decoder * decoder, const void * src,
lv_img_header_t * header);
/**
* Open an image for decoding. Prepare it as it is required to read it later
* @param decoder pointer to the decoder the function associated with
* @param dsc pointer to decoder descriptor. `src`, `style` are already initialized in it.
*/
typedef lv_res_t (*lv_img_decoder_open_f_t)(struct _lv_img_decoder * decoder, struct _lv_img_decoder_dsc * dsc);
/**
* Decode `len` pixels starting from the given `x`, `y` coordinates and store them in `buf`.
* Required only if the "open" function can't return with the whole decoded pixel array.
* @param decoder pointer to the decoder the function associated with
* @param dsc pointer to decoder descriptor
* @param x start x coordinate
* @param y start y coordinate
* @param len number of pixels to decode
* @param buf a buffer to store the decoded pixels
* @return LV_RES_OK: ok; LV_RES_INV: failed
*/
typedef lv_res_t (*lv_img_decoder_read_line_f_t)(struct _lv_img_decoder * decoder, struct _lv_img_decoder_dsc * dsc,
lv_coord_t x, lv_coord_t y, lv_coord_t len, uint8_t * buf);
/**
* Close the pending decoding. Free resources etc.
* @param decoder pointer to the decoder the function associated with
* @param dsc pointer to decoder descriptor
*/
typedef void (*lv_img_decoder_close_f_t)(struct _lv_img_decoder * decoder, struct _lv_img_decoder_dsc * dsc);
typedef struct _lv_img_decoder {
lv_img_decoder_info_f_t info_cb;
lv_img_decoder_open_f_t open_cb;
lv_img_decoder_read_line_f_t read_line_cb;
lv_img_decoder_close_f_t close_cb;
#if LV_USE_USER_DATA
lv_img_decoder_user_data_t user_data;
#endif
} lv_img_decoder_t;
/**Describe an image decoding session. Stores data about the decoding*/
typedef struct _lv_img_decoder_dsc {
/**The decoder which was able to open the image source*/
lv_img_decoder_t * decoder;
/**The image source. A file path like "S:my_img.png" or pointer to an `lv_img_dsc_t` variable*/
const void * src;
/**Style to draw the image.*/
lv_color_t color;
/**Type of the source: file or variable. Can be set in `open` function if required*/
lv_img_src_t src_type;
/**Info about the opened image: color format, size, etc. MUST be set in `open` function*/
lv_img_header_t header;
/** Pointer to a buffer where the image's data (pixels) are stored in a decoded, plain format.
* MUST be set in `open` function*/
const uint8_t * img_data;
/** How much time did it take to open the image. [ms]
* If not set `lv_img_cache` will measure and set the time to open*/
uint32_t time_to_open;
/**A text to display instead of the image when the image can't be opened.
* Can be set in `open` function or set NULL. */
const char * error_msg;
/**Store any custom data here is required*/
void * user_data;
} lv_img_decoder_dsc_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Initialize the image decoder module
*/
void _lv_img_decoder_init(void);
/**
* Get information about an image.
* Try the created image decoder one by one. Once one is able to get info that info will be used.
* @param src the image source. Can be
* 1) File name: E.g. "S:folder/img1.png" (The drivers needs to registered via `lv_fs_add_drv()`)
* 2) Variable: Pointer to an `lv_img_dsc_t` variable
* 3) Symbol: E.g. `LV_SYMBOL_OK`
* @param header the image info will be stored here
* @return LV_RES_OK: success; LV_RES_INV: wasn't able to get info about the image
*/
lv_res_t lv_img_decoder_get_info(const char * src, lv_img_header_t * header);
/**
* Open an image.
* Try the created image decoder one by one. Once one is able to open the image that decoder is save in `dsc`
* @param dsc describe a decoding session. Simply a pointer to an `lv_img_decoder_dsc_t` variable.
* @param src the image source. Can be
* 1) File name: E.g. "S:folder/img1.png" (The drivers needs to registered via `lv_fs_add_drv()`)
* 2) Variable: Pointer to an `lv_img_dsc_t` variable
* 3) Symbol: E.g. `LV_SYMBOL_OK`
* @param style the style of the image
* @return LV_RES_OK: opened the image. `dsc->img_data` and `dsc->header` are set.
* LV_RES_INV: none of the registered image decoders were able to open the image.
*/
lv_res_t lv_img_decoder_open(lv_img_decoder_dsc_t * dsc, const void * src, lv_color_t color);
/**
* Read a line from an opened image
* @param dsc pointer to `lv_img_decoder_dsc_t` used in `lv_img_decoder_open`
* @param x start X coordinate (from left)
* @param y start Y coordinate (from top)
* @param len number of pixels to read
* @param buf store the data here
* @return LV_RES_OK: success; LV_RES_INV: an error occurred
*/
lv_res_t lv_img_decoder_read_line(lv_img_decoder_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_coord_t len,
uint8_t * buf);
/**
* Close a decoding session
* @param dsc pointer to `lv_img_decoder_dsc_t` used in `lv_img_decoder_open`
*/
void lv_img_decoder_close(lv_img_decoder_dsc_t * dsc);
/**
* Create a new image decoder
* @return pointer to the new image decoder
*/
lv_img_decoder_t * lv_img_decoder_create(void);
/**
* Delete an image decoder
* @param decoder pointer to an image decoder
*/
void lv_img_decoder_delete(lv_img_decoder_t * decoder);
/**
* Set a callback to get information about the image
* @param decoder pointer to an image decoder
* @param info_cb a function to collect info about an image (fill an `lv_img_header_t` struct)
*/
void lv_img_decoder_set_info_cb(lv_img_decoder_t * decoder, lv_img_decoder_info_f_t info_cb);
/**
* Set a callback to open an image
* @param decoder pointer to an image decoder
* @param open_cb a function to open an image
*/
void lv_img_decoder_set_open_cb(lv_img_decoder_t * decoder, lv_img_decoder_open_f_t open_cb);
/**
* Set a callback to a decoded line of an image
* @param decoder pointer to an image decoder
* @param read_line_cb a function to read a line of an image
*/
void lv_img_decoder_set_read_line_cb(lv_img_decoder_t * decoder, lv_img_decoder_read_line_f_t read_line_cb);
/**
* Set a callback to close a decoding session. E.g. close files and free other resources.
* @param decoder pointer to an image decoder
* @param close_cb a function to close a decoding session
*/
void lv_img_decoder_set_close_cb(lv_img_decoder_t * decoder, lv_img_decoder_close_f_t close_cb);
/**
* Get info about a built-in image
* @param decoder the decoder where this function belongs
* @param src the image source: pointer to an `lv_img_dsc_t` variable, a file path or a symbol
* @param header store the image data here
* @return LV_RES_OK: the info is successfully stored in `header`; LV_RES_INV: unknown format or other error.
*/
lv_res_t lv_img_decoder_built_in_info(lv_img_decoder_t * decoder, const void * src, lv_img_header_t * header);
/**
* Open a built in image
* @param decoder the decoder where this function belongs
* @param dsc pointer to decoder descriptor. `src`, `style` are already initialized in it.
* @return LV_RES_OK: the info is successfully stored in `header`; LV_RES_INV: unknown format or other error.
*/
lv_res_t lv_img_decoder_built_in_open(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc);
/**
* Decode `len` pixels starting from the given `x`, `y` coordinates and store them in `buf`.
* Required only if the "open" function can't return with the whole decoded pixel array.
* @param decoder pointer to the decoder the function associated with
* @param dsc pointer to decoder descriptor
* @param x start x coordinate
* @param y start y coordinate
* @param len number of pixels to decode
* @param buf a buffer to store the decoded pixels
* @return LV_RES_OK: ok; LV_RES_INV: failed
*/
lv_res_t lv_img_decoder_built_in_read_line(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc, lv_coord_t x,
lv_coord_t y, lv_coord_t len, uint8_t * buf);
/**
* Close the pending decoding. Free resources etc.
* @param decoder pointer to the decoder the function associated with
* @param dsc pointer to decoder descriptor
*/
void lv_img_decoder_built_in_close(lv_img_decoder_t * decoder, lv_img_decoder_dsc_t * dsc);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_TEMPL_H*/

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/*******************************************************************************
* Size: 16 px
* Bpp: 1
* Opts:
******************************************************************************/
#ifdef LV_LVGL_H_INCLUDE_SIMPLE
#include "lvgl.h"
#else
#include "../../lvgl.h"
#endif
#ifndef ICONFONT_SYMBOL
#define ICONFONT_SYMBOL 1
#endif
#if ICONFONT_SYMBOL
/*-----------------
* BITMAPS
*----------------*/
/*Store the image of the glyphs*/
static LV_ATTRIBUTE_LARGE_CONST const uint8_t glyph_bitmap[] = {
/* U+E695 "" */
0x0, 0x0, 0x0, 0x78, 0x0, 0x0, 0x0, 0x0,
0x0, 0xf, 0xfc, 0x0, 0x0, 0x0, 0x0, 0x1,
0xff, 0xfe, 0x0, 0x0, 0x0, 0x0, 0x3f, 0xff,
0xff, 0x0, 0x0, 0x0, 0x7, 0xff, 0xff, 0xff,
0x80, 0x0, 0x0, 0x7f, 0xff, 0xff, 0xff, 0x80,
0x0, 0x0, 0x0, 0x7f, 0xf8, 0x0, 0x0, 0x0,
0x0, 0x1, 0xff, 0xe0, 0x0, 0x0, 0x0, 0x0,
0x7, 0xff, 0x80, 0x0, 0x0, 0x0, 0x0, 0x1f,
0xfe, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0xf8,
0x0, 0x0, 0x7, 0xff, 0xf1, 0xff, 0xe3, 0xff,
0xf8, 0x1f, 0xff, 0xf0, 0x0, 0x3f, 0xff, 0xe0,
0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0x81, 0xff,
0xff, 0xff, 0xff, 0x1c, 0x7e, 0x7, 0xff, 0xff,
0xff, 0xff, 0xff, 0xf8,
/* U+EB21 "" */
0x0, 0x0, 0x7, 0xff, 0x80, 0x0, 0x0, 0x0,
0x0, 0x1f, 0xfe, 0x0, 0x0, 0x0, 0x0, 0x0,
0x7f, 0xf8, 0x0, 0x0, 0x0, 0x0, 0x1, 0xff,
0xe0, 0x0, 0x0, 0x0, 0x0, 0x7, 0xff, 0x80,
0x0, 0x0, 0x0, 0x0, 0x1f, 0xfe, 0x0, 0x0,
0x0, 0x1, 0xff, 0xff, 0xff, 0xfe, 0x0, 0x0,
0x1, 0xff, 0xff, 0xff, 0xe0, 0x0, 0x0, 0x0,
0xff, 0xff, 0xfc, 0x0, 0x0, 0x0, 0x0, 0x7f,
0xff, 0x80, 0x0, 0x0, 0x0, 0x0, 0x3f, 0xf0,
0x0, 0x0, 0x7, 0xff, 0xfe, 0x1e, 0x1f, 0xff,
0xf8, 0x1f, 0xff, 0xff, 0x3, 0xff, 0xff, 0xe0,
0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0x81, 0xff,
0xff, 0xff, 0xff, 0x1c, 0x7e, 0x7, 0xff, 0xff,
0xff, 0xff, 0xff, 0xf8
};
/*---------------------
* GLYPH DESCRIPTION
*--------------------*/
static const lv_font_fmt_txt_glyph_dsc_t glyph_dsc[] = {
{.bitmap_index = 0, .adv_w = 0, .box_w = 0, .box_h = 0, .ofs_x = 0, .ofs_y = 0} /* id = 0 reserved */,
{.bitmap_index = 0, .adv_w = 256, .box_w = 54, .box_h = 16, .ofs_x = -1, .ofs_y = -2},
{.bitmap_index = 108, .adv_w = 256, .box_w = 54, .box_h = 16, .ofs_x = -1, .ofs_y = -2}
};
/*---------------------
* CHARACTER MAPPING
*--------------------*/
static const uint16_t unicode_list_0[] = {
0x0, 0x48c
};
/*Collect the unicode lists and glyph_id offsets*/
static const lv_font_fmt_txt_cmap_t cmaps[] =
{
{
.range_start = 59029, .range_length = 1165, .glyph_id_start = 1,
.unicode_list = unicode_list_0, .glyph_id_ofs_list = NULL, .list_length = 2, .type = LV_FONT_FMT_TXT_CMAP_SPARSE_TINY
}
};
/*--------------------
* ALL CUSTOM DATA
*--------------------*/
#if LV_VERSION_CHECK(8, 0, 0)
/*Store all the custom data of the font*/
static lv_font_fmt_txt_glyph_cache_t cache;
static const lv_font_fmt_txt_dsc_t font_dsc = {
#else
static lv_font_fmt_txt_dsc_t font_dsc = {
#endif
.glyph_bitmap = glyph_bitmap,
.glyph_dsc = glyph_dsc,
.cmaps = cmaps,
.kern_dsc = NULL,
.kern_scale = 0,
.cmap_num = 1,
.bpp = 1,
.kern_classes = 0,
.bitmap_format = 0,
#if LV_VERSION_CHECK(8, 0, 0)
.cache = &cache
#endif
};
/*-----------------
* PUBLIC FONT
*----------------*/
/*Initialize a public general font descriptor*/
#if LV_VERSION_CHECK(8, 0, 0)
const lv_font_t iconfont_symbol = {
#else
lv_font_t iconfont_symbol = {
#endif
.get_glyph_dsc = lv_font_get_glyph_dsc_fmt_txt, /*Function pointer to get glyph's data*/
.get_glyph_bitmap = lv_font_get_bitmap_fmt_txt, /*Function pointer to get glyph's bitmap*/
.line_height = 16, /*The maximum line height required by the font*/
.base_line = 2, /*Baseline measured from the bottom of the line*/
#if !(LVGL_VERSION_MAJOR == 6 && LVGL_VERSION_MINOR == 0)
.subpx = LV_FONT_SUBPX_HOR,
#endif
#if LV_VERSION_CHECK(7, 4, 0) || LVGL_VERSION_MAJOR >= 8
.underline_position = 0,
.underline_thickness = 0,
#endif
.dsc = &font_dsc /*The custom font data. Will be accessed by `get_glyph_bitmap/dsc` */
};
#endif /*#if ICONFONT_SYMBOL*/

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/**
* @file lv_font.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_font.h"
#include "../lv_misc/lv_utils.h"
#include "../lv_misc/lv_log.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Return with the bitmap of a font.
* @param font_p pointer to a font
* @param letter an UNICODE character code
* @return pointer to the bitmap of the letter
*/
const uint8_t * lv_font_get_glyph_bitmap(const lv_font_t * font_p, uint32_t letter)
{
return font_p->get_glyph_bitmap(font_p, letter);
}
/**
* Get the descriptor of a glyph
* @param font_p pointer to font
* @param dsc_out store the result descriptor here
* @param letter an UNICODE letter code
* @return true: descriptor is successfully loaded into `dsc_out`.
* false: the letter was not found, no data is loaded to `dsc_out`
*/
bool lv_font_get_glyph_dsc(const lv_font_t * font_p, lv_font_glyph_dsc_t * dsc_out, uint32_t letter,
uint32_t letter_next)
{
return font_p->get_glyph_dsc(font_p, dsc_out, letter, letter_next);
}
/**
* Get the width of a glyph with kerning
* @param font pointer to a font
* @param letter an UNICODE letter
* @param letter_next the next letter after `letter`. Used for kerning
* @return the width of the glyph
*/
uint16_t lv_font_get_glyph_width(const lv_font_t * font, uint32_t letter, uint32_t letter_next)
{
lv_font_glyph_dsc_t g;
bool ret;
ret = lv_font_get_glyph_dsc(font, &g, letter, letter_next);
if(ret) return g.adv_w;
else return 0;
}
/**********************
* STATIC FUNCTIONS
**********************/

248
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/**
* @file lv_font.h
*
*/
#ifndef LV_FONT_H
#define LV_FONT_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "../lv_conf_internal.h"
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#include "lv_symbol_def.h"
#include "../lv_misc/lv_area.h"
/*********************
* DEFINES
*********************/
/*Number of fractional digits in the advanced width (`adv_w`) field of `lv_font_glyph_dsc_t`*/
#define LV_FONT_WIDTH_FRACT_DIGIT 4
#define LV_FONT_KERN_POSITIVE 0
#define LV_FONT_KERN_NEGATIVE 1
/**********************
* TYPEDEFS
**********************/
/*------------------
* General types
*-----------------*/
/** Describes the properties of a glyph. */
typedef struct {
uint16_t adv_w; /**< The glyph needs this space. Draw the next glyph after this width. 8 bit integer, 4 bit fractional */
uint16_t box_w; /**< Width of the glyph's bounding box*/
uint16_t box_h; /**< Height of the glyph's bounding box*/
int16_t ofs_x; /**< x offset of the bounding box*/
int16_t ofs_y; /**< y offset of the bounding box*/
uint8_t bpp; /**< Bit-per-pixel: 1, 2, 4, 8*/
} lv_font_glyph_dsc_t;
/** The bitmaps might be upscaled by 3 to achieve subpixel rendering. */
enum {
LV_FONT_SUBPX_NONE,
LV_FONT_SUBPX_HOR,
LV_FONT_SUBPX_VER,
LV_FONT_SUBPX_BOTH,
};
typedef uint8_t lv_font_subpx_t;
/** Describe the properties of a font*/
typedef struct _lv_font_struct {
/** Get a glyph's descriptor from a font*/
bool (*get_glyph_dsc)(const struct _lv_font_struct *, lv_font_glyph_dsc_t *, uint32_t letter, uint32_t letter_next);
/** Get a glyph's bitmap from a font*/
const uint8_t * (*get_glyph_bitmap)(const struct _lv_font_struct *, uint32_t);
/*Pointer to the font in a font pack (must have the same line height)*/
lv_coord_t line_height; /**< The real line height where any text fits*/
lv_coord_t base_line; /**< Base line measured from the top of the line_height*/
uint8_t subpx : 2; /**< An element of `lv_font_subpx_t`*/
void * dsc; /**< Store implementation specific or run_time data or caching here*/
#if LV_USE_USER_DATA
lv_font_user_data_t user_data; /**< Custom user data for font. */
#endif
} lv_font_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Return with the bitmap of a font.
* @param font_p pointer to a font
* @param letter an UNICODE character code
* @return pointer to the bitmap of the letter
*/
const uint8_t * lv_font_get_glyph_bitmap(const lv_font_t * font_p, uint32_t letter);
/**
* Get the descriptor of a glyph
* @param font_p pointer to font
* @param dsc_out store the result descriptor here
* @param letter an UNICODE letter code
* @return true: descriptor is successfully loaded into `dsc_out`.
* false: the letter was not found, no data is loaded to `dsc_out`
*/
bool lv_font_get_glyph_dsc(const lv_font_t * font_p, lv_font_glyph_dsc_t * dsc_out, uint32_t letter,
uint32_t letter_next);
/**
* Get the width of a glyph with kerning
* @param font pointer to a font
* @param letter an UNICODE letter
* @param letter_next the next letter after `letter`. Used for kerning
* @return the width of the glyph
*/
uint16_t lv_font_get_glyph_width(const lv_font_t * font, uint32_t letter, uint32_t letter_next);
/**
* Get the line height of a font. All characters fit into this height
* @param font_p pointer to a font
* @return the height of a font
*/
static inline lv_coord_t lv_font_get_line_height(const lv_font_t * font_p)
{
return font_p->line_height;
}
/**********************
* MACROS
**********************/
#define LV_FONT_DECLARE(font_name) extern lv_font_t font_name;
#if LV_FONT_MONTSERRAT_12
LV_FONT_DECLARE(lv_font_montserrat_12)
#endif
#if LV_FONT_MONTSERRAT_14
LV_FONT_DECLARE(lv_font_montserrat_14)
#endif
#if LV_FONT_MONTSERRAT_16
LV_FONT_DECLARE(lv_font_montserrat_16)
#endif
#if LV_FONT_MONTSERRAT_18
LV_FONT_DECLARE(lv_font_montserrat_18)
#endif
#if LV_FONT_MONTSERRAT_20
LV_FONT_DECLARE(lv_font_montserrat_20)
#endif
#if LV_FONT_MONTSERRAT_22
LV_FONT_DECLARE(lv_font_montserrat_22)
#endif
#if LV_FONT_MONTSERRAT_24
LV_FONT_DECLARE(lv_font_montserrat_24)
#endif
#if LV_FONT_MONTSERRAT_26
LV_FONT_DECLARE(lv_font_montserrat_26)
#endif
#if LV_FONT_MONTSERRAT_28
LV_FONT_DECLARE(lv_font_montserrat_28)
#endif
#if LV_FONT_MONTSERRAT_30
LV_FONT_DECLARE(lv_font_montserrat_30)
#endif
#if LV_FONT_MONTSERRAT_32
LV_FONT_DECLARE(lv_font_montserrat_32)
#endif
#if LV_FONT_MONTSERRAT_36
LV_FONT_DECLARE(lv_font_montserrat_36)
#endif
#if LV_FONT_MONTSERRAT_38
LV_FONT_DECLARE(lv_font_montserrat_38)
#endif
#if LV_FONT_MONTSERRAT_40
LV_FONT_DECLARE(lv_font_montserrat_40)
#endif
#if LV_FONT_MONTSERRAT_42
LV_FONT_DECLARE(lv_font_montserrat_42)
#endif
#if LV_FONT_MONTSERRAT_44
LV_FONT_DECLARE(lv_font_montserrat_44)
#endif
#if LV_FONT_MONTSERRAT_46
LV_FONT_DECLARE(lv_font_montserrat_46)
#endif
#if LV_FONT_MONTSERRAT_48
LV_FONT_DECLARE(lv_font_montserrat_48)
#endif
#if LV_FONT_MONTSERRAT_28_COMPRESSED
LV_FONT_DECLARE(lv_font_montserrat_28_compressed)
#endif
#if LV_FONT_MONTSERRAT_12_SUBPX
LV_FONT_DECLARE(lv_font_montserrat_12_subpx)
#endif
#if LV_FONT_UNSCII_8
LV_FONT_DECLARE(lv_font_unscii_8)
#endif
#if LV_FONT_DEJAVU_16_PERSIAN_HEBREW
LV_FONT_DECLARE(lv_font_dejavu_16_persian_hebrew)
#endif
#if LV_FONT_SIMSUN_16_CJK
LV_FONT_DECLARE(lv_font_simsun_16_cjk)
#endif
/*Declare the custom (user defined) fonts*/
#ifdef LV_FONT_CUSTOM_DECLARE
LV_FONT_CUSTOM_DECLARE
#endif
#ifdef TENCENT_W7_16
LV_FONT_DECLARE(tencent_w7_16)
#endif
#ifdef TENCENT_W7_22
LV_FONT_DECLARE(tencent_w7_22)
#endif
#ifdef TENCENT_W7_24
LV_FONT_DECLARE(tencent_w7_24)
#endif
#ifdef ICONFONT_SYMBOL
LV_FONT_DECLARE(iconfont_symbol)
#endif
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*USE_FONT*/

34
nodemcuv2/lv_arduino/src/src/lv_font/lv_font.mk Normal file
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CSRCS += lv_font.c
CSRCS += lv_font_fmt_txt.c
CSRCS += lv_font_montserrat_12.c
CSRCS += lv_font_montserrat_14.c
CSRCS += lv_font_montserrat_16.c
CSRCS += lv_font_montserrat_18.c
CSRCS += lv_font_montserrat_20.c
CSRCS += lv_font_montserrat_22.c
CSRCS += lv_font_montserrat_24.c
CSRCS += lv_font_montserrat_26.c
CSRCS += lv_font_montserrat_28.c
CSRCS += lv_font_montserrat_30.c
CSRCS += lv_font_montserrat_32.c
CSRCS += lv_font_montserrat_34.c
CSRCS += lv_font_montserrat_36.c
CSRCS += lv_font_montserrat_38.c
CSRCS += lv_font_montserrat_40.c
CSRCS += lv_font_montserrat_42.c
CSRCS += lv_font_montserrat_44.c
CSRCS += lv_font_montserrat_46.c
CSRCS += lv_font_montserrat_48.c
CSRCS += lv_font_montserrat_12_subpx.c
CSRCS += lv_font_montserrat_28_compressed.c
CSRCS += lv_font_unscii_8.c
CSRCS += lv_font_dejavu_16_persian_hebrew.c
CSRCS += tencent_w7_16.c
CSRCS += tencent_w7_22.c
CSRCS += tencent_w7_24.c
CSRCS += iconfont_symbol.c
DEPPATH += --dep-path $(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_font
VPATH += :$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_font
CFLAGS += "-I$(LVGL_DIR)/$(LVGL_DIR_NAME)/src/lv_font"

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559
nodemcuv2/lv_arduino/src/src/lv_font/lv_font_fmt_txt.c Normal file
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/**
* @file lv_font.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_font.h"
#include "lv_font_fmt_txt.h"
#include "../lv_misc/lv_debug.h"
#include "../lv_draw/lv_draw.h"
#include "../lv_misc/lv_types.h"
#include "../lv_misc/lv_log.h"
#include "../lv_misc/lv_utils.h"
#include "../lv_misc/lv_mem.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
typedef enum {
RLE_STATE_SINGLE = 0,
RLE_STATE_REPEATE,
RLE_STATE_COUNTER,
} rle_state_t;
/**********************
* STATIC PROTOTYPES
**********************/
static uint32_t get_glyph_dsc_id(const lv_font_t * font, uint32_t letter);
static int8_t get_kern_value(const lv_font_t * font, uint32_t gid_left, uint32_t gid_right);
static int32_t unicode_list_compare(const void * ref, const void * element);
static int32_t kern_pair_8_compare(const void * ref, const void * element);
static int32_t kern_pair_16_compare(const void * ref, const void * element);
static void decompress(const uint8_t * in, uint8_t * out, lv_coord_t w, lv_coord_t h, uint8_t bpp);
static inline void decompress_line(uint8_t * out, lv_coord_t w);
static inline uint8_t get_bits(const uint8_t * in, uint32_t bit_pos, uint8_t len);
static inline void bits_write(uint8_t * out, uint32_t bit_pos, uint8_t val, uint8_t len);
static inline void rle_init(const uint8_t * in, uint8_t bpp);
static inline uint8_t rle_next(void);
/**********************
* STATIC VARIABLES
**********************/
static uint8_t * decompr_buf;
static uint32_t rle_rdp;
static const uint8_t * rle_in;
static uint8_t rle_bpp;
static uint8_t rle_prev_v;
static uint8_t rle_cnt;
static rle_state_t rle_state;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Used as `get_glyph_bitmap` callback in LittelvGL's native font format if the font is uncompressed.
* @param font pointer to font
* @param unicode_letter an unicode letter which bitmap should be get
* @return pointer to the bitmap or NULL if not found
*/
const uint8_t * lv_font_get_bitmap_fmt_txt(const lv_font_t * font, uint32_t unicode_letter)
{
if(unicode_letter == '\t') unicode_letter = ' ';
lv_font_fmt_txt_dsc_t * fdsc = (lv_font_fmt_txt_dsc_t *) font->dsc;
uint32_t gid = get_glyph_dsc_id(font, unicode_letter);
if(!gid) return NULL;
const lv_font_fmt_txt_glyph_dsc_t * gdsc = &fdsc->glyph_dsc[gid];
if(fdsc->bitmap_format == LV_FONT_FMT_TXT_PLAIN) {
if(gdsc) return &fdsc->glyph_bitmap[gdsc->bitmap_index];
}
/*Handle compressed bitmap*/
else {
uint32_t gsize = gdsc->box_w * gdsc->box_h;
if(gsize == 0) return NULL;
uint32_t buf_size = gsize;
/*Compute memory size needed to hold decompressed glyph, rounding up*/
switch(fdsc->bpp) {
case 1:
buf_size = (gsize + 7) >> 3;
break;
case 2:
buf_size = (gsize + 3) >> 2;
break;
case 3:
buf_size = (gsize + 1) >> 1;
break;
case 4:
buf_size = (gsize + 1) >> 1;
break;
}
if(_lv_mem_get_size(decompr_buf) < buf_size) {
decompr_buf = lv_mem_realloc(decompr_buf, buf_size);
LV_ASSERT_MEM(decompr_buf);
if(decompr_buf == NULL) return NULL;
}
decompress(&fdsc->glyph_bitmap[gdsc->bitmap_index], decompr_buf, gdsc->box_w, gdsc->box_h, (uint8_t)fdsc->bpp);
return decompr_buf;
}
/*If not returned earlier then the letter is not found in this font*/
return NULL;
}
/**
* Used as `get_glyph_dsc` callback in LittelvGL's native font format if the font is uncompressed.
* @param font_p pointer to font
* @param dsc_out store the result descriptor here
* @param letter an UNICODE letter code
* @return true: descriptor is successfully loaded into `dsc_out`.
* false: the letter was not found, no data is loaded to `dsc_out`
*/
bool lv_font_get_glyph_dsc_fmt_txt(const lv_font_t * font, lv_font_glyph_dsc_t * dsc_out, uint32_t unicode_letter,
uint32_t unicode_letter_next)
{
bool is_tab = false;
if(unicode_letter == '\t') {
unicode_letter = ' ';
is_tab = true;
}
lv_font_fmt_txt_dsc_t * fdsc = (lv_font_fmt_txt_dsc_t *) font->dsc;
uint32_t gid = get_glyph_dsc_id(font, unicode_letter);
if(!gid) return false;
int8_t kvalue = 0;
if(fdsc->kern_dsc) {
uint32_t gid_next = get_glyph_dsc_id(font, unicode_letter_next);
if(gid_next) {
kvalue = get_kern_value(font, gid, gid_next);
}
}
/*Put together a glyph dsc*/
const lv_font_fmt_txt_glyph_dsc_t * gdsc = &fdsc->glyph_dsc[gid];
int32_t kv = ((int32_t)((int32_t)kvalue * fdsc->kern_scale) >> 4);
uint32_t adv_w = gdsc->adv_w;
if(is_tab) adv_w *= 2;
adv_w += kv;
adv_w = (adv_w + (1 << 3)) >> 4;
dsc_out->adv_w = adv_w;
dsc_out->box_h = gdsc->box_h;
dsc_out->box_w = gdsc->box_w;
dsc_out->ofs_x = gdsc->ofs_x;
dsc_out->ofs_y = gdsc->ofs_y;
dsc_out->bpp = (uint8_t)fdsc->bpp;
if(is_tab) dsc_out->box_w = dsc_out->box_w * 2;
return true;
}
/**
* Free the allocated memories.
*/
void _lv_font_clean_up_fmt_txt(void)
{
if(decompr_buf) {
lv_mem_free(decompr_buf);
decompr_buf = NULL;
}
}
/**********************
* STATIC FUNCTIONS
**********************/
static uint32_t get_glyph_dsc_id(const lv_font_t * font, uint32_t letter)
{
if(letter == '\0') return 0;
lv_font_fmt_txt_dsc_t * fdsc = (lv_font_fmt_txt_dsc_t *) font->dsc;
/*Check the cache first*/
if(letter == fdsc->last_letter) return fdsc->last_glyph_id;
uint16_t i;
for(i = 0; i < fdsc->cmap_num; i++) {
/*Relative code point*/
uint32_t rcp = letter - fdsc->cmaps[i].range_start;
if(rcp > fdsc->cmaps[i].range_length) continue;
uint32_t glyph_id = 0;
if(fdsc->cmaps[i].type == LV_FONT_FMT_TXT_CMAP_FORMAT0_TINY) {
glyph_id = fdsc->cmaps[i].glyph_id_start + rcp;
}
else if(fdsc->cmaps[i].type == LV_FONT_FMT_TXT_CMAP_FORMAT0_FULL) {
const uint8_t * gid_ofs_8 = fdsc->cmaps[i].glyph_id_ofs_list;
glyph_id = fdsc->cmaps[i].glyph_id_start + gid_ofs_8[rcp];
}
else if(fdsc->cmaps[i].type == LV_FONT_FMT_TXT_CMAP_SPARSE_TINY) {
uint8_t * p = _lv_utils_bsearch(&rcp, fdsc->cmaps[i].unicode_list, fdsc->cmaps[i].list_length,
sizeof(fdsc->cmaps[i].unicode_list[0]), unicode_list_compare);
if(p) {
lv_uintptr_t ofs = (lv_uintptr_t)(p - (uint8_t *) fdsc->cmaps[i].unicode_list);
ofs = ofs >> 1; /*The list stores `uint16_t` so the get the index divide by 2*/
glyph_id = fdsc->cmaps[i].glyph_id_start + ofs;
}
}
else if(fdsc->cmaps[i].type == LV_FONT_FMT_TXT_CMAP_SPARSE_FULL) {
uint8_t * p = _lv_utils_bsearch(&rcp, fdsc->cmaps[i].unicode_list, fdsc->cmaps[i].list_length,
sizeof(fdsc->cmaps[i].unicode_list[0]), unicode_list_compare);
if(p) {
lv_uintptr_t ofs = (lv_uintptr_t)(p - (uint8_t *) fdsc->cmaps[i].unicode_list);
ofs = ofs >> 1; /*The list stores `uint16_t` so the get the index divide by 2*/
const uint8_t * gid_ofs_16 = fdsc->cmaps[i].glyph_id_ofs_list;
glyph_id = fdsc->cmaps[i].glyph_id_start + gid_ofs_16[ofs];
}
}
/*Update the cache*/
fdsc->last_letter = letter;
fdsc->last_glyph_id = glyph_id;
return glyph_id;
}
fdsc->last_letter = letter;
fdsc->last_glyph_id = 0;
return 0;
}
static int8_t get_kern_value(const lv_font_t * font, uint32_t gid_left, uint32_t gid_right)
{
lv_font_fmt_txt_dsc_t * fdsc = (lv_font_fmt_txt_dsc_t *) font->dsc;
int8_t value = 0;
if(fdsc->kern_classes == 0) {
/*Kern pairs*/
const lv_font_fmt_txt_kern_pair_t * kdsc = fdsc->kern_dsc;
if(kdsc->glyph_ids_size == 0) {
/* Use binary search to find the kern value.
* The pairs are ordered left_id first, then right_id secondly. */
const uint8_t * g_ids = kdsc->glyph_ids;
uint16_t g_id_both = (gid_right << 8) + gid_left; /*Create one number from the ids*/
uint8_t * kid_p = _lv_utils_bsearch(&g_id_both, g_ids, kdsc->pair_cnt, 2, kern_pair_8_compare);
/*If the `g_id_both` were found get its index from the pointer*/
if(kid_p) {
lv_uintptr_t ofs = (lv_uintptr_t)(kid_p - g_ids);
ofs = ofs >> 1; /*ofs is for pair, divide by 2 to refer as a single value*/
value = kdsc->values[ofs];
}
}
else if(kdsc->glyph_ids_size == 1) {
/* Use binary search to find the kern value.
* The pairs are ordered left_id first, then right_id secondly. */
const uint16_t * g_ids = kdsc->glyph_ids;
lv_uintptr_t g_id_both = (uint32_t)((uint32_t)gid_right << 8) + gid_left; /*Create one number from the ids*/
uint8_t * kid_p = _lv_utils_bsearch(&g_id_both, g_ids, kdsc->pair_cnt, 4, kern_pair_16_compare);
/*If the `g_id_both` were found get its index from the pointer*/
if(kid_p) {
lv_uintptr_t ofs = (lv_uintptr_t)(kid_p - (const uint8_t *)g_ids);
ofs = ofs >> 4; /*ofs is 4 byte pairs, divide by 4 to refer as a single value*/
value = kdsc->values[ofs];
}
}
else {
/*Invalid value*/
}
}
else {
/*Kern classes*/
const lv_font_fmt_txt_kern_classes_t * kdsc = fdsc->kern_dsc;
uint8_t left_class = kdsc->left_class_mapping[gid_left];
uint8_t right_class = kdsc->right_class_mapping[gid_right];
/* If class = 0, kerning not exist for that glyph
* else got the value form `class_pair_values` 2D array*/
if(left_class > 0 && right_class > 0) {
value = kdsc->class_pair_values[(left_class - 1) * kdsc->right_class_cnt + (right_class - 1)];
}
}
return value;
}
static int32_t kern_pair_8_compare(const void * ref, const void * element)
{
const uint8_t * ref8_p = ref;
const uint8_t * element8_p = element;
/*If the MSB is different it will matter. If not return the diff. of the LSB*/
if(ref8_p[0] != element8_p[0]) return (int32_t)ref8_p[0] - element8_p[0];
else return (int32_t) ref8_p[1] - element8_p[1];
}
static int32_t kern_pair_16_compare(const void * ref, const void * element)
{
const uint16_t * ref16_p = ref;
const uint16_t * element16_p = element;
/*If the MSB is different it will matter. If not return the diff. of the LSB*/
if(ref16_p[0] != element16_p[0]) return (int32_t)ref16_p[0] - element16_p[0];
else return (int32_t) ref16_p[1] - element16_p[1];
}
/**
* The compress a glyph's bitmap
* @param in the compressed bitmap
* @param out buffer to store the result
* @param px_num number of pixels in the glyph (width * height)
* @param bpp bit per pixel (bpp = 3 will be converted to bpp = 4)
*/
static void decompress(const uint8_t * in, uint8_t * out, lv_coord_t w, lv_coord_t h, uint8_t bpp)
{
uint32_t wrp = 0;
uint8_t wr_size = bpp;
if(bpp == 3) wr_size = 4;
rle_init(in, bpp);
uint8_t * line_buf1 = _lv_mem_buf_get(w);
uint8_t * line_buf2 = _lv_mem_buf_get(w);
decompress_line(line_buf1, w);
lv_coord_t y;
lv_coord_t x;
for(x = 0; x < w; x++) {
bits_write(out, wrp, line_buf1[x], bpp);
wrp += wr_size;
}
for(y = 1; y < h; y++) {
decompress_line(line_buf2, w);
for(x = 0; x < w; x++) {
line_buf1[x] = line_buf2[x] ^ line_buf1[x];
bits_write(out, wrp, line_buf1[x], bpp);
wrp += wr_size;
}
}
_lv_mem_buf_release(line_buf1);
_lv_mem_buf_release(line_buf2);
}
/**
* Decompress one line. Store one pixel per byte
* @param out output buffer
* @param w width of the line in pixel count
*/
static inline void decompress_line(uint8_t * out, lv_coord_t w)
{
lv_coord_t i;
for(i = 0; i < w; i++) {
out[i] = rle_next();
}
}
/**
* Read bits from an input buffer. The read can cross byte boundary.
* @param in the input buffer to read from.
* @param bit_pos index of the first bit to read.
* @param len number of bits to read (must be <= 8).
* @return the read bits
*/
static inline uint8_t get_bits(const uint8_t * in, uint32_t bit_pos, uint8_t len)
{
uint8_t bit_mask;
switch(len) {
case 1:
bit_mask = 0x1;
break;
case 2:
bit_mask = 0x3;
break;
case 3:
bit_mask = 0x7;
break;
case 4:
bit_mask = 0xF;
break;
case 8:
bit_mask = 0xFF;
break;
default:
bit_mask = (uint16_t)((uint16_t) 1 << len) - 1;
}
uint32_t byte_pos = bit_pos >> 3;
bit_pos = bit_pos & 0x7;
if(bit_pos + len >= 8) {
uint16_t in16 = (in[byte_pos] << 8) + in[byte_pos + 1];
return (in16 >> (16 - bit_pos - len)) & bit_mask;
}
else {
return (in[byte_pos] >> (8 - bit_pos - len)) & bit_mask;
}
}
/**
* Write `val` data to `bit_pos` position of `out`. The write can NOT cross byte boundary.
* @param out buffer where to write
* @param bit_pos bit index to write
* @param val value to write
* @param len length of bits to write from `val`. (Counted from the LSB).
* @note `len == 3` will be converted to `len = 4` and `val` will be upscaled too
*/
static inline void bits_write(uint8_t * out, uint32_t bit_pos, uint8_t val, uint8_t len)
{
if(len == 3) {
len = 4;
switch(val) {
case 0:
val = 0;
break;
case 1:
val = 2;
break;
case 2:
val = 4;
break;
case 3:
val = 6;
break;
case 4:
val = 9;
break;
case 5:
val = 11;
break;
case 6:
val = 13;
break;
case 7:
val = 15;
break;
}
}
uint16_t byte_pos = bit_pos >> 3;
bit_pos = bit_pos & 0x7;
bit_pos = 8 - bit_pos - len;
uint8_t bit_mask = (uint16_t)((uint16_t) 1 << len) - 1;
out[byte_pos] &= ((~bit_mask) << bit_pos);
out[byte_pos] |= (val << bit_pos);
}
static inline void rle_init(const uint8_t * in, uint8_t bpp)
{
rle_in = in;
rle_bpp = bpp;
rle_state = RLE_STATE_SINGLE;
rle_rdp = 0;
rle_prev_v = 0;
rle_cnt = 0;
}
static inline uint8_t rle_next(void)
{
uint8_t v = 0;
uint8_t ret = 0;
if(rle_state == RLE_STATE_SINGLE) {
ret = get_bits(rle_in, rle_rdp, rle_bpp);
if(rle_rdp != 0 && rle_prev_v == ret) {
rle_cnt = 0;
rle_state = RLE_STATE_REPEATE;
}
rle_prev_v = ret;
rle_rdp += rle_bpp;
}
else if(rle_state == RLE_STATE_REPEATE) {
v = get_bits(rle_in, rle_rdp, 1);
rle_cnt++;
rle_rdp += 1;
if(v == 1) {
ret = rle_prev_v;
if(rle_cnt == 11) {
rle_cnt = get_bits(rle_in, rle_rdp, 6);
rle_rdp += 6;
if(rle_cnt != 0) {
rle_state = RLE_STATE_COUNTER;
}
else {
ret = get_bits(rle_in, rle_rdp, rle_bpp);
rle_prev_v = ret;
rle_rdp += rle_bpp;
rle_state = RLE_STATE_SINGLE;
}
}
}
else {
ret = get_bits(rle_in, rle_rdp, rle_bpp);
rle_prev_v = ret;
rle_rdp += rle_bpp;
rle_state = RLE_STATE_SINGLE;
}
}
else if(rle_state == RLE_STATE_COUNTER) {
ret = rle_prev_v;
rle_cnt--;
if(rle_cnt == 0) {
ret = get_bits(rle_in, rle_rdp, rle_bpp);
rle_prev_v = ret;
rle_rdp += rle_bpp;
rle_state = RLE_STATE_SINGLE;
}
}
return ret;
}
/** Code Comparator.
*
* Compares the value of both input arguments.
*
* @param[in] pRef Pointer to the reference.
* @param[in] pElement Pointer to the element to compare.
*
* @return Result of comparison.
* @retval < 0 Reference is greater than element.
* @retval = 0 Reference is equal to element.
* @retval > 0 Reference is less than element.
*
*/
static int32_t unicode_list_compare(const void * ref, const void * element)
{
return ((int32_t)(*(uint16_t *)ref)) - ((int32_t)(*(uint16_t *)element));
}

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/**
* @file lv_font.h
*
*/
#ifndef LV_FONT_FMT_TXT_H
#define LV_FONT_FMT_TXT_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#include "lv_font.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/** This describes a glyph. */
typedef struct {
#if LV_FONT_FMT_TXT_LARGE == 0
uint32_t bitmap_index : 20; /**< Start index of the bitmap. A font can be max 1 MB. */
uint32_t adv_w : 12; /**< Draw the next glyph after this width. 8.4 format (real_value * 16 is stored). */
uint8_t box_w; /**< Width of the glyph's bounding box*/
uint8_t box_h; /**< Height of the glyph's bounding box*/
int8_t ofs_x; /**< x offset of the bounding box*/
int8_t ofs_y; /**< y offset of the bounding box. Measured from the top of the line*/
#else
uint32_t bitmap_index; /**< Start index of the bitmap. A font can be max 4 GB. */
uint32_t adv_w; /**< Draw the next glyph after this width. 28.4 format (real_value * 16 is stored). */
uint16_t box_w; /**< Width of the glyph's bounding box*/
uint16_t box_h; /**< Height of the glyph's bounding box*/
int16_t ofs_x; /**< x offset of the bounding box*/
int16_t ofs_y; /**< y offset of the bounding box. Measured from the top of the line*/
#endif
} lv_font_fmt_txt_glyph_dsc_t;
/** Format of font character map. */
enum {
LV_FONT_FMT_TXT_CMAP_FORMAT0_TINY,
LV_FONT_FMT_TXT_CMAP_FORMAT0_FULL,
LV_FONT_FMT_TXT_CMAP_SPARSE_TINY,
LV_FONT_FMT_TXT_CMAP_SPARSE_FULL,
};
typedef uint8_t lv_font_fmt_txt_cmap_type_t;
/* Map codepoints to a `glyph_dsc`s
* Several formats are supported to optimize memory usage
* See https://github.com/lvgl/lv_font_conv/blob/master/doc/font_spec.md
*/
typedef struct {
/** First Unicode character for this range */
uint32_t range_start;
/** Number of Unicode characters related to this range.
* Last Unicode character = range_start + range_length - 1*/
uint16_t range_length;
/** First glyph ID (array index of `glyph_dsc`) for this range */
uint16_t glyph_id_start;
/*
According the specification there are 4 formats:
https://github.com/lvgl/lv_font_conv/blob/master/doc/font_spec.md
For simplicity introduce "relative code point":
rcp = codepoint - range_start
and a search function:
search a "value" in an "array" and returns the index of "value".
Format 0 tiny
unicode_list == NULL && glyph_id_ofs_list == NULL
glyph_id = glyph_id_start + rcp
Format 0 full
unicode_list == NULL && glyph_id_ofs_list != NULL
glyph_id = glyph_id_start + glyph_id_ofs_list[rcp]
Sparse tiny
unicode_list != NULL && glyph_id_ofs_list == NULL
glyph_id = glyph_id_start + search(unicode_list, rcp)
Sparse full
unicode_list != NULL && glyph_id_ofs_list != NULL
glyph_id = glyph_id_start + glyph_id_ofs_list[search(unicode_list, rcp)]
*/
const uint16_t * unicode_list;
/** if(type == LV_FONT_FMT_TXT_CMAP_FORMAT0_...) it's `uint8_t *`
* if(type == LV_FONT_FMT_TXT_CMAP_SPARSE_...) it's `uint16_t *`
*/
const void * glyph_id_ofs_list;
/** Length of `unicode_list` and/or `glyph_id_ofs_list`*/
uint16_t list_length;
/** Type of this character map*/
lv_font_fmt_txt_cmap_type_t type;
} lv_font_fmt_txt_cmap_t;
/** A simple mapping of kern values from pairs*/
typedef struct {
/*To get a kern value of two code points:
1. Get the `glyph_id_left` and `glyph_id_right` from `lv_font_fmt_txt_cmap_t
2 for(i = 0; i < pair_cnt * 2; i+2)
if(gylph_ids[i] == glyph_id_left &&
gylph_ids[i+1] == glyph_id_right)
return values[i / 2];
*/
const void * glyph_ids;
const int8_t * values;
uint32_t pair_cnt : 24;
uint32_t glyph_ids_size : 2; /*0: `glyph_ids` is stored as `uint8_t`; 1: as `uint16_t`*/
} lv_font_fmt_txt_kern_pair_t;
/** More complex but more optimal class based kern value storage*/
typedef struct {
/*To get a kern value of two code points:
1. Get the `glyph_id_left` and `glyph_id_right` from `lv_font_fmt_txt_cmap_t
2 Get the class of the left and right glyphs as `left_class` and `right_class`
left_class = left_class_mapping[glyph_id_left];
right_class = right_class_mapping[glyph_id_right];
3. value = class_pair_values[(left_class-1)*right_class_cnt + (right_class-1)]
*/
const int8_t * class_pair_values; /*left_class_num * right_class_num value*/
const uint8_t * left_class_mapping; /*Map the glyph_ids to classes: index -> glyph_id -> class_id*/
const uint8_t * right_class_mapping; /*Map the glyph_ids to classes: index -> glyph_id -> class_id*/
uint8_t left_class_cnt;
uint8_t right_class_cnt;
} lv_font_fmt_txt_kern_classes_t;
/** Bitmap formats*/
typedef enum {
LV_FONT_FMT_TXT_PLAIN = 0,
LV_FONT_FMT_TXT_COMPRESSED = 1,
} lv_font_fmt_txt_bitmap_format_t;
/*Describe store additional data for fonts */
typedef struct {
/*The bitmaps of all glyphs*/
const uint8_t * glyph_bitmap;
/*Describe the glyphs*/
const lv_font_fmt_txt_glyph_dsc_t * glyph_dsc;
/* Map the glyphs to Unicode characters.
* Array of `lv_font_cmap_fmt_txt_t` variables*/
const lv_font_fmt_txt_cmap_t * cmaps;
/* Store kerning values.
* Can be `lv_font_fmt_txt_kern_pair_t * or `lv_font_kern_classes_fmt_txt_t *`
* depending on `kern_classes`
*/
const void * kern_dsc;
/*Scale kern values in 12.4 format*/
uint16_t kern_scale;
/*Number of cmap tables*/
uint16_t cmap_num : 10;
/*Bit per pixel: 1, 2, 3, 4, 8*/
uint16_t bpp : 4;
/*Type of `kern_dsc`*/
uint16_t kern_classes : 1;
/*
* storage format of the bitmap
* from `lv_font_fmt_txt_bitmap_format_t`
*/
uint16_t bitmap_format : 2;
/*Cache the last letter and is glyph id*/
uint32_t last_letter;
uint32_t last_glyph_id;
} lv_font_fmt_txt_dsc_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Used as `get_glyph_bitmap` callback in LittelvGL's native font format if the font is uncompressed.
* @param font pointer to font
* @param unicode_letter an unicode letter which bitmap should be get
* @return pointer to the bitmap or NULL if not found
*/
const uint8_t * lv_font_get_bitmap_fmt_txt(const lv_font_t * font, uint32_t letter);
/**
* Used as `get_glyph_dsc` callback in LittelvGL's native font format if the font is uncompressed.
* @param font_p pointer to font
* @param dsc_out store the result descriptor here
* @param letter an UNICODE letter code
* @return true: descriptor is successfully loaded into `dsc_out`.
* false: the letter was not found, no data is loaded to `dsc_out`
*/
bool lv_font_get_glyph_dsc_fmt_txt(const lv_font_t * font, lv_font_glyph_dsc_t * dsc_out, uint32_t unicode_letter,
uint32_t unicode_letter_next);
/**
* Free the allocated memories.
*/
void _lv_font_clean_up_fmt_txt(void);
/**********************
* MACROS
**********************/
/**********************
* ADD BUILT IN FONTS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_FONT_FMT_TXT_H*/

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