#include "../../lv_examples.h" #if LV_USE_CANVAS && LV_BUILD_EXAMPLES #if LV_USE_VECTOR_GRAPHIC #define CANVAS_WIDTH 150 #define CANVAS_HEIGHT 150 /** * Draw a path to the canvas */ void lv_example_canvas_8(void) { /*Create a buffer for the canvas*/ LV_DRAW_BUF_DEFINE(draw_buf, CANVAS_WIDTH, CANVAS_HEIGHT, LV_COLOR_FORMAT_ARGB8888); /*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_vector_dsc_t * dsc = lv_vector_dsc_create(&layer); lv_vector_path_t * path = lv_vector_path_create(LV_VECTOR_PATH_QUALITY_MEDIUM); lv_fpoint_t pts[] = {{10, 10}, {130, 130}, {10, 130}}; lv_vector_path_move_to(path, &pts[0]); lv_vector_path_line_to(path, &pts[1]); lv_vector_path_line_to(path, &pts[2]); lv_vector_path_close(path); lv_vector_dsc_set_fill_color(dsc, lv_color_make(0x00, 0x80, 0xff)); lv_vector_dsc_add_path(dsc, path); lv_draw_vector(dsc); lv_vector_path_delete(path); lv_vector_dsc_delete(dsc); lv_canvas_finish_layer(canvas, &layer); } #else void lv_example_canvas_8(void) { /*fallback for online examples*/ lv_obj_t * label = lv_label_create(lv_screen_active()); lv_label_set_text(label, "Vector graphics is not enabled"); lv_obj_center(label); } #endif /*LV_USE_VECTOR_GRAPHIC*/ #endif