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=484d60dab5d846bf28c7a4d48892324a
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2019-03-18 20:06:34 +00:00
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REG_FIDDLE(Surface_readPixels_2, 256, 64, false, 0) {
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2019-03-15 18:22:51 +00:00
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void draw(SkCanvas* canvas) {
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sk_sp<SkSurface> surf(SkSurface::MakeRasterN32Premul(64, 64));
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auto surfCanvas = surf->getCanvas();
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surfCanvas->clear(SK_ColorRED);
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SkPaint paint;
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surfCanvas->drawOval({4, 8, 58, 54}, paint);
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SkImageInfo info = SkImageInfo::Make(64, 64, kBGRA_8888_SkColorType, kPremul_SkAlphaType);
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sk_sp<SkData> data(SkData::MakeUninitialized(info.minRowBytes() * info.height()));
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sk_bzero(data->writable_data(), info.minRowBytes() * info.height());
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for (int x : { 32, -32 } ) {
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for (int y : { 32, -32 } ) {
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surf->readPixels(info, data->writable_data(), info.minRowBytes(), x, y);
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}
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}
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sk_sp<SkImage> image = SkImage::MakeRasterData(info, data, info.minRowBytes());
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canvas->drawImage(image, 0, 0);
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}
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} // END FIDDLE
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