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// Copyright 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BitmapCanvasLayerTextureUpdater_h
#define BitmapCanvasLayerTextureUpdater_h
#include "cc/canvas_layer_texture_updater.h"
class SkCanvas;
namespace cc {
class LayerPainter;
// This class rasterizes the contentRect into a skia bitmap canvas. It then updates
// textures by copying from the canvas into the texture, using MapSubImage if
// possible.
class BitmapCanvasLayerTextureUpdater : public CanvasLayerTextureUpdater {
public:
class Texture : public LayerTextureUpdater::Texture {
public:
Texture(BitmapCanvasLayerTextureUpdater*, scoped_ptr<PrioritizedTexture>);
virtual ~Texture();
virtual void update(TextureUpdateQueue&, const IntRect& sourceRect, const IntSize& destOffset, bool partialUpdate, RenderingStats&) OVERRIDE;
private:
BitmapCanvasLayerTextureUpdater* textureUpdater() { return m_textureUpdater; }
BitmapCanvasLayerTextureUpdater* m_textureUpdater;
};
static scoped_refptr<BitmapCanvasLayerTextureUpdater> create(scoped_ptr<LayerPainter>);
virtual scoped_ptr<LayerTextureUpdater::Texture> createTexture(PrioritizedTextureManager*) OVERRIDE;
virtual SampledTexelFormat sampledTexelFormat(GLenum textureFormat) OVERRIDE;
virtual void prepareToUpdate(const IntRect& contentRect, const IntSize& tileSize, float contentsWidthScale, float contentsHeightScale, IntRect& resultingOpaqueRect, RenderingStats&) OVERRIDE;
void updateTexture(TextureUpdateQueue&, PrioritizedTexture*, const IntRect& sourceRect, const IntSize& destOffset, bool partialUpdate);
virtual void setOpaque(bool) OVERRIDE;
protected:
explicit BitmapCanvasLayerTextureUpdater(scoped_ptr<LayerPainter>);
virtual ~BitmapCanvasLayerTextureUpdater();
scoped_ptr<SkCanvas> m_canvas;
IntSize m_canvasSize;
bool m_opaque;
};
} // namespace cc
#endif // BitmapCanvasLayerTextureUpdater_h
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