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- // Copyright 2019 Google LLC.
- // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
- #include "tools/fiddle/examples.h"
- // HASH=e9f70cbc9827097449a386ec7a8a8188
- REG_FIDDLE(Bitmap_readPixels_2, 256, 256, false, 3) {
- void draw(SkCanvas* canvas) {
- std::vector<int32_t> srcPixels;
- srcPixels.resize(source.height() * source.rowBytes());
- for (int y = 0; y < 4; ++y) {
- for (int x = 0; x < 4; ++x) {
- SkPixmap pixmap(SkImageInfo::MakeN32Premul(source.width() / 4, source.height() / 4),
- &srcPixels.front() + x * source.height() * source.width() / 4 +
- y * source.width() / 4, source.rowBytes());
- source.readPixels(pixmap, x * source.width() / 4, y * source.height() / 4);
- }
- }
- canvas->scale(.5f, .5f);
- SkBitmap bitmap;
- bitmap.installPixels(SkImageInfo::MakeN32Premul(source.width(), source.height()),
- &srcPixels.front(), source.rowBytes());
- canvas->drawBitmap(bitmap, 0, 0);
- }
- } // END FIDDLE
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