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57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
#include "../../lv_examples.h"
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#if LV_USE_CANVAS && LV_BUILD_EXAMPLES
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#if LV_USE_VECTOR_GRAPHIC
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#define CANVAS_WIDTH 150
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#define CANVAS_HEIGHT 150
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/**
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* Draw a path to the canvas
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*/
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void lv_example_canvas_8(void)
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{
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/*Create a buffer for the canvas*/
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LV_DRAW_BUF_DEFINE(draw_buf, CANVAS_WIDTH, CANVAS_HEIGHT, LV_COLOR_FORMAT_ARGB8888);
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/*Create a canvas and initialize its palette*/
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lv_obj_t * canvas = lv_canvas_create(lv_screen_active());
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lv_canvas_set_draw_buf(canvas, &draw_buf);
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lv_canvas_fill_bg(canvas, lv_color_hex3(0xccc), LV_OPA_COVER);
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lv_obj_center(canvas);
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lv_layer_t layer;
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lv_canvas_init_layer(canvas, &layer);
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lv_vector_dsc_t * dsc = lv_vector_dsc_create(&layer);
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lv_vector_path_t * path = lv_vector_path_create(LV_VECTOR_PATH_QUALITY_MEDIUM);
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lv_fpoint_t pts[] = {{10, 10}, {130, 130}, {10, 130}};
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lv_vector_path_move_to(path, &pts[0]);
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lv_vector_path_line_to(path, &pts[1]);
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lv_vector_path_line_to(path, &pts[2]);
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lv_vector_path_close(path);
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lv_vector_dsc_set_fill_color(dsc, lv_color_make(0x00, 0x80, 0xff));
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lv_vector_dsc_add_path(dsc, path);
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lv_draw_vector(dsc);
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lv_vector_path_delete(path);
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lv_vector_dsc_delete(dsc);
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lv_canvas_finish_layer(canvas, &layer);
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}
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#else
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void lv_example_canvas_8(void)
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{
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/*fallback for online examples*/
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lv_obj_t * label = lv_label_create(lv_screen_active());
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lv_label_set_text(label, "Vector graphics is not enabled");
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lv_obj_center(label);
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}
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#endif /*LV_USE_VECTOR_GRAPHIC*/
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#endif
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