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// Copyright 2010 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 CC_TEXTURE_LAYER_H_
#define CC_TEXTURE_LAYER_H_
#include "cc/cc_export.h"
#include "cc/layer.h"
namespace WebKit {
class WebGraphicsContext3D;
}
namespace cc {
class TextureLayerClient;
// A Layer containing a the rendered output of a plugin instance.
class CC_EXPORT TextureLayer : public Layer {
public:
// If this texture layer requires special preparation logic for each frame driven by
// the compositor, pass in a non-nil client. Pass in a nil client pointer if texture updates
// are driven by an external process.
static scoped_refptr<TextureLayer> create(TextureLayerClient*);
void clearClient() { m_client = 0; }
virtual scoped_ptr<LayerImpl> createLayerImpl() OVERRIDE;
// Sets whether this texture should be Y-flipped at draw time. Defaults to true.
void setFlipped(bool);
// Sets a UV transform to be used at draw time. Defaults to (0, 0, 1, 1).
void setUVRect(const gfx::RectF&);
// Sets whether the alpha channel is premultiplied or unpremultiplied. Defaults to true.
void setPremultipliedAlpha(bool);
// Sets whether this context should rate limit on damage to prevent too many frames from
// being queued up before the compositor gets a chance to run. Requires a non-nil client.
// Defaults to false.
void setRateLimitContext(bool);
// Code path for plugins which supply their own texture ID.
void setTextureId(unsigned);
void willModifyTexture();
virtual void setNeedsDisplayRect(const gfx::RectF&) OVERRIDE;
virtual void setLayerTreeHost(LayerTreeHost*) OVERRIDE;
virtual bool drawsContent() const OVERRIDE;
virtual void update(ResourceUpdateQueue&, const OcclusionTracker*, RenderingStats&) OVERRIDE;
virtual void pushPropertiesTo(LayerImpl*) OVERRIDE;
protected:
explicit TextureLayer(TextureLayerClient*);
virtual ~TextureLayer();
private:
TextureLayerClient* m_client;
bool m_flipped;
gfx::RectF m_uvRect;
bool m_premultipliedAlpha;
bool m_rateLimitContext;
bool m_contextLost;
bool m_contentCommitted;
unsigned m_textureId;
};
}
#endif // CC_TEXTURE_LAYER_H_
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