generated from Embedded_Projects/LVGL_Emulator
92 lines
3.3 KiB
C
92 lines
3.3 KiB
C
#include "lvgl.h"
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#include "sdl_drivers/sdl_driver.h"
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/**********************
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* STATIC FUNCTIONS
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**********************/
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static int tick_thread(void *data);
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/**
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* Initialize the Hardware Abstraction Layer (HAL) for the LVGL graphics
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* library
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*/
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void hal_init(void) {
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/* Use the 'monitor' driver which creates window on PC's monitor to simulate a display*/
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sdl_init();
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/* Tick init.
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* You have to call 'lv_tick_inc()' in periodically to inform LittelvGL about
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* how much time were elapsed Create an SDL thread to do this*/
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SDL_CreateThread(tick_thread, "tick", NULL);
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/*Create a display buffer*/
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static lv_disp_draw_buf_t disp_buf1;
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static lv_color_t buf1_1[SDL_HOR_RES * 100];
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static lv_color_t buf1_2[SDL_HOR_RES * 100];
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lv_disp_draw_buf_init(&disp_buf1, buf1_1, buf1_2, SDL_HOR_RES * 100);
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/*Create a display*/
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static lv_disp_drv_t disp_drv;
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lv_disp_drv_init(&disp_drv); /*Basic initialization*/
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disp_drv.draw_buf = &disp_buf1;
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disp_drv.flush_cb = monitor_flush;
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disp_drv.hor_res = SDL_HOR_RES;
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disp_drv.ver_res = SDL_VER_RES;
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disp_drv.antialiasing = 1;
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lv_disp_t *disp = lv_disp_drv_register(&disp_drv);
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lv_theme_t *th = lv_theme_default_init(disp, lv_palette_main(LV_PALETTE_BLUE), lv_palette_main(LV_PALETTE_RED),
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LV_THEME_DEFAULT_DARK, LV_FONT_DEFAULT);
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lv_disp_set_theme(disp, th);
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lv_group_t *g = lv_group_create();
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lv_group_set_default(g);
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/* Add the mouse as input device
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* Use the 'mouse' driver which reads the PC's mouse*/
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static lv_indev_drv_t indev_drv_1;
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lv_indev_drv_init(&indev_drv_1); /*Basic initialization*/
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indev_drv_1.type = LV_INDEV_TYPE_POINTER;
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/*This function will be called periodically (by the library) to get the mouse position and state*/
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indev_drv_1.read_cb = sdl_mouse_read;
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lv_indev_t *mouse_indev = lv_indev_drv_register(&indev_drv_1);
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static lv_indev_drv_t indev_drv_2;
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lv_indev_drv_init(&indev_drv_2); /*Basic initialization*/
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indev_drv_2.type = LV_INDEV_TYPE_KEYPAD;
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indev_drv_2.read_cb = sdl_keyboard_read;
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lv_indev_t *kb_indev = lv_indev_drv_register(&indev_drv_2);
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lv_indev_set_group(kb_indev, g);
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static lv_indev_drv_t indev_drv_3;
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lv_indev_drv_init(&indev_drv_3); /*Basic initialization*/
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indev_drv_3.type = LV_INDEV_TYPE_ENCODER;
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indev_drv_3.read_cb = sdl_mousewheel_read;
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lv_indev_t *enc_indev = lv_indev_drv_register(&indev_drv_3);
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lv_indev_set_group(enc_indev, g);
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/*Set a cursor for the mouse*/
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LV_IMG_DECLARE(mouse_cursor_icon); /*Declare the image file.*/
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lv_obj_t *cursor_obj = lv_img_create(lv_scr_act()); /*Create an image object for the cursor */
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lv_img_set_src(cursor_obj, &mouse_cursor_icon); /*Set the image source*/
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lv_indev_set_cursor(mouse_indev, cursor_obj); /*Connect the image object to the driver*/
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}
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/**
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* A task to measure the elapsed time for LVGL
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* @param data unused
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* @return never return
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*/
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static int tick_thread(void *data) {
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(void)data;
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while (1) {
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SDL_Delay(5);
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lv_tick_inc(5); /*Tell LittelvGL that 5 milliseconds were elapsed*/
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}
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return 0;
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} |