#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*/ static uint8_t cbuf[LV_CANVAS_BUF_SIZE_TRUE_COLOR(CANVAS_WIDTH, CANVAS_HEIGHT)]; /*Create a canvas and initialize its palette*/ lv_obj_t * canvas = lv_canvas_create(lv_scr_act()); lv_canvas_set_buffer(canvas, cbuf, CANVAS_WIDTH, CANVAS_HEIGHT, LV_COLOR_FORMAT_NATIVE); lv_canvas_fill_bg(canvas, lv_color_hex3(0xccc), LV_OPA_COVER); lv_obj_center(canvas); 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_canvas_draw_rect(canvas, 10, 10, 30, 20, &dsc); } #endif