cc/RenderSurfaceChromium.h

// 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 RenderSurfaceChromium_h
#define RenderSurfaceChromium_h

#if USE(ACCELERATED_COMPOSITING)

#include "FloatRect.h"
#include "IntRect.h"
#include <public/WebTransformationMatrix.h>
#include <wtf/Noncopyable.h>

namespace cc {

class LayerChromium;

class RenderSurfaceChromium {
    WTF_MAKE_NONCOPYABLE(RenderSurfaceChromium);
public:
    explicit RenderSurfaceChromium(LayerChromium*);
    ~RenderSurfaceChromium();

    // Returns the rect that encloses the RenderSurface including any reflection.
    FloatRect drawableContentRect() const;

    const IntRect& contentRect() const { return m_contentRect; }
    void setContentRect(const IntRect& contentRect) { m_contentRect = contentRect; }

    float drawOpacity() const { return m_drawOpacity; }
    void setDrawOpacity(float drawOpacity) { m_drawOpacity = drawOpacity; }

    bool drawOpacityIsAnimating() const { return m_drawOpacityIsAnimating; }
    void setDrawOpacityIsAnimating(bool drawOpacityIsAnimating) { m_drawOpacityIsAnimating = drawOpacityIsAnimating; }

    // This goes from content space with the origin in the center of the rect being transformed to the target space with the origin in the top left of the
    // rect being transformed. Position the rect so that the origin is in the center of it before applying this transform.
    const WebKit::WebTransformationMatrix& drawTransform() const { return m_drawTransform; }
    void setDrawTransform(const WebKit::WebTransformationMatrix& drawTransform) { m_drawTransform = drawTransform; }

    const WebKit::WebTransformationMatrix& screenSpaceTransform() const { return m_screenSpaceTransform; }
    void setScreenSpaceTransform(const WebKit::WebTransformationMatrix& screenSpaceTransform) { m_screenSpaceTransform = screenSpaceTransform; }

    const WebKit::WebTransformationMatrix& replicaDrawTransform() const { return m_replicaDrawTransform; }
    void setReplicaDrawTransform(const WebKit::WebTransformationMatrix& replicaDrawTransform) { m_replicaDrawTransform = replicaDrawTransform; }

    const WebKit::WebTransformationMatrix& replicaScreenSpaceTransform() const { return m_replicaScreenSpaceTransform; }
    void setReplicaScreenSpaceTransform(const WebKit::WebTransformationMatrix& replicaScreenSpaceTransform) { m_replicaScreenSpaceTransform = replicaScreenSpaceTransform; }

    bool targetSurfaceTransformsAreAnimating() const { return m_targetSurfaceTransformsAreAnimating; }
    void setTargetSurfaceTransformsAreAnimating(bool animating) { m_targetSurfaceTransformsAreAnimating = animating; }
    bool screenSpaceTransformsAreAnimating() const { return m_screenSpaceTransformsAreAnimating; }
    void setScreenSpaceTransformsAreAnimating(bool animating) { m_screenSpaceTransformsAreAnimating = animating; }

    const IntRect& clipRect() const { return m_clipRect; }
    void setClipRect(const IntRect& clipRect) { m_clipRect = clipRect; }

    void clearLayerList() { m_layerList.clear(); }
    Vector<RefPtr<LayerChromium> >& layerList() { return m_layerList; }

    void setNearestAncestorThatMovesPixels(RenderSurfaceChromium* surface) { m_nearestAncestorThatMovesPixels = surface; }
    const RenderSurfaceChromium* nearestAncestorThatMovesPixels() const { return m_nearestAncestorThatMovesPixels; }

private:
    LayerChromium* m_owningLayer;

    // Uses this surface's space.
    IntRect m_contentRect;

    float m_drawOpacity;
    bool m_drawOpacityIsAnimating;
    WebKit::WebTransformationMatrix m_drawTransform;
    WebKit::WebTransformationMatrix m_screenSpaceTransform;
    WebKit::WebTransformationMatrix m_replicaDrawTransform;
    WebKit::WebTransformationMatrix m_replicaScreenSpaceTransform;
    bool m_targetSurfaceTransformsAreAnimating;
    bool m_screenSpaceTransformsAreAnimating;

    // Uses the space of the surface's target surface.
    IntRect m_clipRect;

    Vector<RefPtr<LayerChromium> > m_layerList;

    // The nearest ancestor target surface that will contain the contents of this surface, and that is going
    // to move pixels within the surface (such as with a blur). This can point to itself.
    RenderSurfaceChromium* m_nearestAncestorThatMovesPixels;

    // For CCLayerIteratorActions
    int m_targetRenderSurfaceLayerIndexHistory;
    int m_currentLayerIndexHistory;
    friend struct CCLayerIteratorActions;
};

}
#endif // USE(ACCELERATED_COMPOSITING)

#endif