1*c8dee2aaSAndroid Build Coastguard Worker // Copyright 2019 Google LLC.
2*c8dee2aaSAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3*c8dee2aaSAndroid Build Coastguard Worker #include "tools/fiddle/examples.h"
4*c8dee2aaSAndroid Build Coastguard Worker REG_FIDDLE(Pixmap_extractSubset, 256, 128, false, 3) {
draw(SkCanvas * canvas)5*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
6*c8dee2aaSAndroid Build Coastguard Worker std::vector<int32_t> pixels;
7*c8dee2aaSAndroid Build Coastguard Worker pixels.resize(image->height() * image->width() * 4);
8*c8dee2aaSAndroid Build Coastguard Worker SkPixmap pixmap(SkImageInfo::Make(image->width(), image->height(), kN32_SkColorType,
9*c8dee2aaSAndroid Build Coastguard Worker image->alphaType()), (const void*) &pixels.front(), image->width() * 4);
10*c8dee2aaSAndroid Build Coastguard Worker image->readPixels(nullptr, pixmap, 0, 0);
11*c8dee2aaSAndroid Build Coastguard Worker SkPixmap inset;
12*c8dee2aaSAndroid Build Coastguard Worker if (pixmap.extractSubset(&inset, {128, 128, 512, 512})) {
13*c8dee2aaSAndroid Build Coastguard Worker SkBitmap bitmap;
14*c8dee2aaSAndroid Build Coastguard Worker bitmap.installPixels(inset);
15*c8dee2aaSAndroid Build Coastguard Worker canvas->drawImage(bitmap.asImage(), 0, 0);
16*c8dee2aaSAndroid Build Coastguard Worker }
17*c8dee2aaSAndroid Build Coastguard Worker }
18*c8dee2aaSAndroid Build Coastguard Worker } // END FIDDLE
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