halcanary | 219f18f | 2015-09-01 10:01:38 -0700 | [diff] [blame] | 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 | |
| 16 | static 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 | |
| 25 | static 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 | |
| 35 | void 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 | |
| 74 | int 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 | } |