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main.c
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/**
* @file main
*
*/
/*********************
* INCLUDES
*********************/
#define _DEFAULT_SOURCE /* needed for usleep() */
#include <stdlib.h>
#include <unistd.h>
#define SDL_MAIN_HANDLED /*To fix SDL's "undefined reference to WinMain" issue*/
#include <SDL2/SDL.h>
#include "lvgl/lvgl.h"
#include "lvgl/examples/lv_examples.h"
#include "lvgl/demos/lv_demos.h"
#include "lv_drivers/sdl/sdl.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void hal_init(void);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* VARIABLES
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
int main(int argc, char **argv)
{
(void)argc; /*Unused*/
(void)argv; /*Unused*/
/*Initialize LVGL*/
lv_init();
/*Initialize the HAL (display, input devices, tick) for LVGL*/
hal_init();
// lv_example_switch_1();
// lv_example_calendar_1();
// lv_example_btnmatrix_2();
// lv_example_checkbox_1();
// lv_example_colorwheel_1();
// lv_example_chart_6();
// lv_example_table_2();
// lv_example_scroll_2();
// lv_example_textarea_1();
// lv_example_msgbox_1();
// lv_example_dropdown_2();
// lv_example_btn_1();
// lv_example_scroll_1();
// lv_example_tabview_1();
// lv_example_tabview_1();
// lv_example_flex_3();
// lv_example_label_1();
lv_demo_widgets();
while(1) {
/* Periodically call the lv_task handler.
* It could be done in a timer interrupt or an OS task too.*/
lv_timer_handler();
usleep(5 * 1000);
}
return 0;
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Initialize the Hardware Abstraction Layer (HAL) for the LVGL graphics
* library
*/
static void hal_init(void)
{
/* Use the 'monitor' driver which creates window on PC's monitor to simulate a display*/
sdl_init();
/*Create a display buffer*/
static lv_disp_draw_buf_t disp_buf1;
static lv_color_t buf1_1[SDL_HOR_RES * 100];
lv_disp_draw_buf_init(&disp_buf1, buf1_1, NULL, SDL_HOR_RES * 100);
/*Create a display*/
static lv_disp_drv_t disp_drv;
lv_disp_drv_init(&disp_drv); /*Basic initialization*/
disp_drv.draw_buf = &disp_buf1;
disp_drv.flush_cb = sdl_display_flush;
disp_drv.hor_res = SDL_HOR_RES;
disp_drv.ver_res = SDL_VER_RES;
lv_disp_t * disp = lv_disp_drv_register(&disp_drv);
lv_theme_t * th = lv_theme_default_init(disp, lv_palette_main(LV_PALETTE_BLUE), lv_palette_main(LV_PALETTE_RED), LV_THEME_DEFAULT_DARK, LV_FONT_DEFAULT);
lv_disp_set_theme(disp, th);
lv_group_t * g = lv_group_create();
lv_group_set_default(g);
/* Add the mouse as input device
* Use the 'mouse' driver which reads the PC's mouse*/
static lv_indev_drv_t indev_drv_1;
lv_indev_drv_init(&indev_drv_1); /*Basic initialization*/
indev_drv_1.type = LV_INDEV_TYPE_POINTER;
/*This function will be called periodically (by the library) to get the mouse position and state*/
indev_drv_1.read_cb = sdl_mouse_read;
lv_indev_t *mouse_indev = lv_indev_drv_register(&indev_drv_1);
static lv_indev_drv_t indev_drv_2;
lv_indev_drv_init(&indev_drv_2); /*Basic initialization*/
indev_drv_2.type = LV_INDEV_TYPE_KEYPAD;
indev_drv_2.read_cb = sdl_keyboard_read;
lv_indev_t *kb_indev = lv_indev_drv_register(&indev_drv_2);
lv_indev_set_group(kb_indev, g);
static lv_indev_drv_t indev_drv_3;
lv_indev_drv_init(&indev_drv_3); /*Basic initialization*/
indev_drv_3.type = LV_INDEV_TYPE_ENCODER;
indev_drv_3.read_cb = sdl_mousewheel_read;
lv_indev_t * enc_indev = lv_indev_drv_register(&indev_drv_3);
lv_indev_set_group(enc_indev, g);
/*Set a cursor for the mouse*/
LV_IMG_DECLARE(mouse_cursor_icon); /*Declare the image file.*/
lv_obj_t * cursor_obj = lv_img_create(lv_scr_act()); /*Create an image object for the cursor */
lv_img_set_src(cursor_obj, &mouse_cursor_icon); /*Set the image source*/
lv_indev_set_cursor(mouse_indev, cursor_obj); /*Connect the image object to the driver*/
}