mirror of
https://github.com/lvgl/lvgl.git
synced 2025-01-28 07:03:00 +08:00
dfe50c5952
Signed-off-by: Xu Xingliang <xuxingliang@xiaomi.com> Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
#include "../../lv_examples.h"
|
|
#if LV_USE_CANVAS && LV_BUILD_EXAMPLES
|
|
|
|
#define CANVAS_WIDTH 50
|
|
#define CANVAS_HEIGHT 50
|
|
|
|
/**
|
|
* Draw a rectangle to the canvas
|
|
*/
|
|
void lv_example_canvas_3(void)
|
|
{
|
|
/*Create a buffer for the canvas*/
|
|
LV_DRAW_BUF_DEFINE_STATIC(draw_buf, CANVAS_WIDTH, CANVAS_HEIGHT, LV_COLOR_FORMAT_ARGB8888);
|
|
LV_DRAW_BUF_INIT_STATIC(draw_buf);
|
|
|
|
/*Create a canvas and initialize its palette*/
|
|
lv_obj_t * canvas = lv_canvas_create(lv_screen_active());
|
|
lv_canvas_set_draw_buf(canvas, &draw_buf);
|
|
|
|
lv_canvas_fill_bg(canvas, lv_color_hex3(0xccc), LV_OPA_COVER);
|
|
lv_obj_center(canvas);
|
|
|
|
lv_layer_t layer;
|
|
lv_canvas_init_layer(canvas, &layer);
|
|
|
|
lv_draw_rect_dsc_t dsc;
|
|
lv_draw_rect_dsc_init(&dsc);
|
|
dsc.bg_color = lv_palette_main(LV_PALETTE_RED);
|
|
dsc.border_color = lv_palette_main(LV_PALETTE_BLUE);
|
|
dsc.border_width = 3;
|
|
dsc.outline_color = lv_palette_main(LV_PALETTE_GREEN);
|
|
dsc.outline_width = 2;
|
|
dsc.outline_pad = 2;
|
|
dsc.outline_opa = LV_OPA_50;
|
|
dsc.radius = 5;
|
|
dsc.border_width = 3;
|
|
|
|
lv_area_t coords = {10, 10, 40, 30};
|
|
|
|
lv_draw_rect(&layer, &dsc, &coords);
|
|
|
|
lv_canvas_finish_layer(canvas, &layer);
|
|
}
|
|
#endif
|