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      1 /*
      2  * Copyright (C) 2009 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef GraphicsLayerCACF_h
     27 #define GraphicsLayerCACF_h
     28 
     29 #if USE(ACCELERATED_COMPOSITING)
     30 
     31 #include "GraphicsLayer.h"
     32 #include "GraphicsContext.h"
     33 #include <wtf/RetainPtr.h>
     34 
     35 namespace WebCore {
     36 
     37 class WKCACFLayer;
     38 
     39 class GraphicsLayerCACF : public GraphicsLayer {
     40 public:
     41 
     42     GraphicsLayerCACF(GraphicsLayerClient*);
     43     virtual ~GraphicsLayerCACF();
     44 
     45     virtual void setName(const String& inName);
     46 
     47     virtual bool setChildren(const Vector<GraphicsLayer*>&);
     48     virtual void addChild(GraphicsLayer *layer);
     49     virtual void addChildAtIndex(GraphicsLayer *layer, int index);
     50     virtual void addChildAbove(GraphicsLayer *layer, GraphicsLayer *sibling);
     51     virtual void addChildBelow(GraphicsLayer *layer, GraphicsLayer *sibling);
     52     virtual bool replaceChild(GraphicsLayer *oldChild, GraphicsLayer *newChild);
     53 
     54     virtual void removeFromParent();
     55 
     56     virtual void setPosition(const FloatPoint& inPoint);
     57     virtual void setAnchorPoint(const FloatPoint3D& inPoint);
     58     virtual void setSize(const FloatSize& inSize);
     59 
     60     virtual void setTransform(const TransformationMatrix&);
     61 
     62     virtual void setChildrenTransform(const TransformationMatrix&);
     63 
     64     virtual void setPreserves3D(bool);
     65     virtual void setMasksToBounds(bool);
     66     virtual void setDrawsContent(bool);
     67 
     68     virtual void setBackgroundColor(const Color&);
     69     virtual void clearBackgroundColor();
     70 
     71     virtual void setContentsOpaque(bool);
     72     virtual void setBackfaceVisibility(bool);
     73 
     74     virtual void setOpacity(float opacity);
     75 
     76     virtual void setNeedsDisplay();
     77     virtual void setNeedsDisplayInRect(const FloatRect&);
     78 
     79     virtual void setContentsRect(const IntRect&);
     80 
     81     virtual void setContentsToImage(Image*);
     82     virtual void setContentsToMedia(PlatformLayer*);
     83 
     84     virtual PlatformLayer* platformLayer() const;
     85 
     86     virtual void setDebugBackgroundColor(const Color&);
     87     virtual void setDebugBorder(const Color&, float borderWidth);
     88 
     89 private:
     90     void updateOpacityOnLayer();
     91 
     92     WKCACFLayer* primaryLayer() const  { return m_transformLayer.get() ? m_transformLayer.get() : m_layer.get(); }
     93     WKCACFLayer* hostLayerForSublayers() const;
     94     WKCACFLayer* layerForSuperlayer() const;
     95 
     96     bool requiresTiledLayer(const FloatSize&) const;
     97     void swapFromOrToTiledLayer(bool useTiledLayer);
     98 
     99     CompositingCoordinatesOrientation defaultContentsOrientation() const;
    100     void updateSublayerList();
    101     void updateLayerPosition();
    102     void updateLayerSize();
    103     void updateAnchorPoint();
    104     void updateTransform();
    105     void updateChildrenTransform();
    106     void updateMasksToBounds();
    107     void updateContentsOpaque();
    108     void updateBackfaceVisibility();
    109     void updateLayerPreserves3D();
    110     void updateLayerDrawsContent();
    111     void updateLayerBackgroundColor();
    112 
    113     void updateContentsImage();
    114     void updateContentsMedia();
    115     void updateContentsRect();
    116 
    117     void setupContentsLayer(WKCACFLayer*);
    118     WKCACFLayer* contentsLayer() const { return m_contentsLayer.get(); }
    119 
    120     RefPtr<WKCACFLayer> m_layer;
    121     RefPtr<WKCACFLayer> m_transformLayer;
    122     RefPtr<WKCACFLayer> m_contentsLayer;
    123 
    124     enum ContentsLayerPurpose {
    125         NoContentsLayer = 0,
    126         ContentsLayerForImage,
    127         ContentsLayerForMedia
    128     };
    129 
    130     ContentsLayerPurpose m_contentsLayerPurpose;
    131     bool m_contentsLayerHasBackgroundColor : 1;
    132     RetainPtr<CGImageRef> m_pendingContentsImage;
    133 };
    134 
    135 } // namespace WebCore
    136 
    137 #endif // USE(ACCELERATED_COMPOSITING)
    138 
    139 #endif // GraphicsLayerCACF_h
    140