2019-03-15 18:22:51 +00:00
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// 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 "fiddle/examples.h"
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// HASH=094ca0bd37588cc7be241bb387a3e17b
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2019-03-18 20:06:34 +00:00
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REG_FIDDLE(Pixmap_readPixels_2, 256, 256, false, 3) {
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2019-03-15 18:22:51 +00:00
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void draw(SkCanvas* canvas) {
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SkImageInfo info = SkImageInfo::MakeN32Premul(image->width(), image->height());
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std::vector<int32_t> srcPixels;
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const int rowBytes = image->width() * 4;
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srcPixels.resize(image->height() * rowBytes);
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SkPixmap pixmap(info, (const void*) &srcPixels.front(), rowBytes);
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image->readPixels(pixmap, 0, 0);
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for (int offset : { 32, 64, 96 } ) {
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std::vector<int32_t> dstPixels;
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dstPixels.resize(image->height() * rowBytes);
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pixmap.readPixels(info, &dstPixels.front(), rowBytes, offset, 0);
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SkBitmap bitmap;
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SkPixmap dstmap(info, &dstPixels.front(), rowBytes);
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bitmap.installPixels(dstmap);
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canvas->translate(32, 32);
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canvas->drawBitmap(bitmap, 0, 0);
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}
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}
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} // END FIDDLE
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