CanvasLayerTextureUpdater.h   [plain text]

/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


#ifndef CanvasLayerTextureUpdater_h
#define CanvasLayerTextureUpdater_h

#if USE(ACCELERATED_COMPOSITING)

#include "LayerTextureUpdater.h"

namespace WebCore {

class GraphicsContext3D;
class LayerPainterChromium;
class PlatformContextSkia;

// Base class for BitmapCanvasLayerTextureUpdater and
// SkPictureCanvasLayerTextureUpdater that reduces code duplication between
// their respective paintContents implementations.
class CanvasLayerTextureUpdater : public LayerTextureUpdater {
public:
    virtual ~CanvasLayerTextureUpdater();

protected:
    explicit CanvasLayerTextureUpdater(PassOwnPtr<LayerPainterChromium>);

    void paintContents(GraphicsContext&, PlatformContextSkia&, const IntRect& contentRect, float contentsScale, IntRect& resultingOpaqueRect);
    const IntRect& contentRect() const { return m_contentRect; }

private:
    IntRect m_contentRect;
    OwnPtr<LayerPainterChromium> m_painter;
};

} // namespace WebCore
#endif // USE(ACCELERATED_COMPOSITING)
#endif // CanvasLayerTextureUpdater_h