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Hal Canary87515122019-03-15 14:22:51 -04001// 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.
Mike Kleinc0bd9f92019-04-23 12:05:21 -05003#include "tools/fiddle/examples.h"
Hal Canary87515122019-03-15 14:22:51 -04004// HASH=febdbfac6cf4cde69837643be2e1f6dd
Hal Canarya7181e7c2019-03-18 16:06:34 -04005REG_FIDDLE(Pixmap_extractSubset, 256, 128, false, 3) {
Hal Canary87515122019-03-15 14:22:51 -04006void 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);
Adlai Hollerbcfc5542020-08-27 12:44:07 -040011 image->readPixels(nullptr, pixmap, 0, 0);
Hal Canary87515122019-03-15 14:22:51 -040012 SkPixmap inset;
13 if (pixmap.extractSubset(&inset, {128, 128, 512, 512})) {
14 SkBitmap bitmap;
15 bitmap.installPixels(inset);
Mike Reedecdd9792021-01-27 20:39:22 -050016 canvas->drawImage(bitmap.asImage(), 0, 0);
Hal Canary87515122019-03-15 14:22:51 -040017 }
18}
19} // END FIDDLE