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// HASH=febdbfac6cf4cde69837643be2e1f6dd
5REG_FIDDLE(Pixmap_extractSubset, 256, 128, false, 3) {
6void draw(SkCanvas* canvas) {
7    std::vector<int32_t> pixels;
8    pixels.resize(image->height() * image->width() * 4);
9    SkPixmap pixmap(SkImageInfo::Make(image->width(), image->height(), kN32_SkColorType,
10            image->alphaType()), (const void*) &pixels.front(), image->width() * 4);
11    image->readPixels(nullptr, pixmap, 0, 0);
12    SkPixmap inset;
13    if (pixmap.extractSubset(&inset, {128, 128, 512, 512})) {
14        SkBitmap bitmap;
15        bitmap.installPixels(inset);
16        canvas->drawImage(bitmap.asImage(), 0, 0);
17    }
18}
19}  // END FIDDLE
20