27 lines
1020 B
C++
27 lines
1020 B
C++
// Copyright 2019 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#include "tools/fiddle/examples.h"
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// HASH=9b3133a6673d2514d166398adbe1f9f4
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REG_FIDDLE(Bitmap_writePixels, 256, 256, false, 3) {
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void draw(SkCanvas* canvas) {
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std::vector<int32_t> srcPixels;
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int width = image->width();
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int height = image->height();
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srcPixels.resize(height * width * 4);
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SkPixmap pixmap(SkImageInfo::MakeN32Premul(width, height), (const void*) &srcPixels.front(),
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width * 4);
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image->readPixels(nullptr, pixmap, 0, 0);
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canvas->scale(.5f, .5f);
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width /= 4;
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height /= 4;
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for (int y = 0; y < 4; ++y) {
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for (int x = 0; x < 4; ++x) {
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SkBitmap bitmap;
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bitmap.allocPixels(SkImageInfo::MakeN32Premul(width, height));
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bitmap.writePixels(pixmap, -y * width, -x * height);
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canvas->drawImage(bitmap.asImage(), x * width, y * height);
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}
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}
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}
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} // END FIDDLE
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