1/*
2 * Copyright 2015 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7#include <stdio.h>
8
9#include "sk_data.h"
10#include "sk_image.h"
11#include "sk_canvas.h"
12#include "sk_surface.h"
13#include "sk_paint.h"
14#include "sk_path.h"
15
16static sk_surface_t* make_surface(int32_t w, int32_t h) {
17    sk_imageinfo_t info;
18    info.width = w;
19    info.height = h;
20    info.colorType = sk_colortype_get_default_8888();
21    info.alphaType = PREMUL_SK_ALPHATYPE;
22    return sk_surface_new_raster(&info, NULL);
23}
24
25static void emit_png(const char* path, sk_surface_t* surface) {
26    sk_image_t* image = sk_surface_new_image_snapshot(surface);
27    sk_data_t* data = sk_image_encode(image);
28    sk_image_unref(image);
29    FILE* f = fopen(path, "wb");
30    fwrite(sk_data_get_data(data), sk_data_get_size(data), 1, f);
31    fclose(f);
32    sk_data_unref(data);
33}
34
35void draw(sk_canvas_t* canvas) {
36    sk_paint_t* fill = sk_paint_new();
37    sk_paint_set_color(fill, sk_color_set_argb(0xFF, 0x00, 0x00, 0xFF));
38    sk_canvas_draw_paint(canvas, fill);
39
40    sk_paint_set_color(fill, sk_color_set_argb(0xFF, 0x00, 0xFF, 0xFF));
41    sk_rect_t rect;
42    rect.left = 100.0f;
43    rect.top = 100.0f;
44    rect.right = 540.0f;
45    rect.bottom = 380.0f;
46    sk_canvas_draw_rect(canvas, &rect, fill);
47
48    sk_paint_t* stroke = sk_paint_new();
49    sk_paint_set_color(stroke, sk_color_set_argb(0xFF, 0xFF, 0x00, 0x00));
50    sk_paint_set_antialias(stroke, true);
51    sk_paint_set_stroke(stroke, true);
52    sk_paint_set_stroke_width(stroke, 5.0f);
53    sk_path_t* path = sk_path_new();
54
55    sk_path_move_to(path, 50.0f, 50.0f);
56    sk_path_line_to(path, 590.0f, 50.0f);
57    sk_path_cubic_to(path, -490.0f, 50.0f, 1130.0f, 430.0f, 50.0f, 430.0f);
58    sk_path_line_to(path, 590.0f, 430.0f);
59    sk_canvas_draw_path(canvas, path, stroke);
60
61    sk_paint_set_color(fill, sk_color_set_argb(0x80, 0x00, 0xFF, 0x00));
62    sk_rect_t rect2;
63    rect2.left = 120.0f;
64    rect2.top = 120.0f;
65    rect2.right = 520.0f;
66    rect2.bottom = 360.0f;
67    sk_canvas_draw_oval(canvas, &rect2, fill);
68
69    sk_path_delete(path);
70    sk_paint_delete(stroke);
71    sk_paint_delete(fill);
72}
73
74int main() {
75    sk_surface_t* surface = make_surface(640, 480);
76    sk_canvas_t* canvas = sk_surface_get_canvas(surface);
77    draw(canvas);
78    emit_png("skia-c-example.png", surface);
79    sk_surface_unref(surface);
80    return 0;
81}
82