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(Pixmap_extractSubset, 256, 128, false, 3) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6 std::vector<int32_t> pixels;
7 pixels.resize(image->height() * image->width() * 4);
8 SkPixmap pixmap(SkImageInfo::Make(image->width(), image->height(), kN32_SkColorType,
9 image->alphaType()), (const void*) &pixels.front(), image->width() * 4);
10 image->readPixels(nullptr, pixmap, 0, 0);
11 SkPixmap inset;
12 if (pixmap.extractSubset(&inset, {128, 128, 512, 512})) {
13 SkBitmap bitmap;
14 bitmap.installPixels(inset);
15 canvas->drawImage(bitmap.asImage(), 0, 0);
16 }
17 }
18 } // END FIDDLE
19