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efe3f4569a
Choose a child more likely to remain stable from frame to frame as the target to cache in the OpacityLayer.
65 lines
1.9 KiB
C++
65 lines
1.9 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef TESTING_MOCK_RASTER_CACHE_H_
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#define TESTING_MOCK_RASTER_CACHE_H_
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#include "flutter/flow/raster_cache.h"
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#include "third_party/skia/include/core/SkImage.h"
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#include "third_party/skia/include/core/SkPicture.h"
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namespace flutter {
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namespace testing {
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/**
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* @brief A RasterCacheResult implementation that represents a cached Layer or
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* SkPicture without the overhead of storage.
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*
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* This implementation is used by MockRasterCache only for testing proper usage
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* of the RasterCache in layer unit tests.
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*/
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class MockRasterCacheResult : public RasterCacheResult {
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public:
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MockRasterCacheResult(SkIRect device_rect);
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void draw(SkCanvas& canvas, const SkPaint* paint = nullptr) const override{};
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SkISize image_dimensions() const override { return device_rect_.size(); };
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int64_t image_bytes() const override {
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return image_dimensions().area() *
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SkColorTypeBytesPerPixel(kBGRA_8888_SkColorType);
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}
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private:
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SkIRect device_rect_;
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};
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/**
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* @brief A RasterCache implementation that simulates the act of rendering a
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* Layer or SkPicture without the overhead of rasterization or pixel storage.
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* This implementation is used only for testing proper usage of the RasterCache
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* in layer unit tests.
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*/
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class MockRasterCache : public RasterCache {
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public:
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std::unique_ptr<RasterCacheResult> RasterizePicture(
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SkPicture* picture,
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GrContext* context,
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const SkMatrix& ctm,
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SkColorSpace* dst_color_space,
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bool checkerboard) const override;
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std::unique_ptr<RasterCacheResult> RasterizeLayer(
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PrerollContext* context,
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Layer* layer,
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const SkMatrix& ctm,
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bool checkerboard) const override;
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};
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} // namespace testing
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} // namespace flutter
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#endif // TESTING_MOCK_RASTER_CACHE_H_
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