xref: /aosp_15_r20/external/skia/docs/examples/Image_makeSubset.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1 // Copyright 2019 Google LLC.
2 // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3 #include "tools/fiddle/examples.h"
4 REG_FIDDLE(Image_makeSubset, 256, 256, false, 3) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6     canvas->scale(.5f, .5f);
7     const int width = 64;
8     const int height = 64;
9     for (int y = 0; y < 512; y += height ) {
10         for (int x = 0; x < 512; x += width ) {
11             sk_sp<SkImage> subset(image->makeSubset(nullptr, {x, y, x + width, y + height}));
12             canvas->drawImage(subset, x * 3 / 2, y * 3 / 2);
13         }
14     }
15 }
16 }  // END FIDDLE
17