1 #include "../../lv_examples.h"
2 #if LV_USE_CANVAS && LV_BUILD_EXAMPLES
3
4 #define CANVAS_WIDTH 50
5 #define CANVAS_HEIGHT 50
6
7 /**
8 * Draw an image to the canvas
9 */
lv_example_canvas_6(void)10 void lv_example_canvas_6(void)
11 {
12 /*Create a buffer for the canvas*/
13 static uint8_t cbuf[LV_CANVAS_BUF_SIZE(CANVAS_WIDTH, CANVAS_HEIGHT, 32, LV_DRAW_BUF_STRIDE_ALIGN)];
14
15 /*Create a canvas and initialize its palette*/
16 lv_obj_t * canvas = lv_canvas_create(lv_screen_active());
17 lv_canvas_set_buffer(canvas, cbuf, CANVAS_WIDTH, CANVAS_HEIGHT, LV_COLOR_FORMAT_ARGB8888);
18 lv_canvas_fill_bg(canvas, lv_color_hex3(0xccc), LV_OPA_COVER);
19 lv_obj_center(canvas);
20
21 lv_layer_t layer;
22 lv_canvas_init_layer(canvas, &layer);
23
24 LV_IMAGE_DECLARE(img_star);
25 lv_draw_image_dsc_t dsc;
26 lv_draw_image_dsc_init(&dsc);
27 dsc.src = &img_star;
28
29 lv_area_t coords = {10, 10, 10 + img_star.header.w - 1, 10 + img_star.header.h - 1};
30
31 lv_draw_image(&layer, &dsc, &coords);
32
33 lv_canvas_finish_layer(canvas, &layer);
34 }
35 #endif
36
