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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     // for hosting this GraphicsLayer in a native layer hierarchy
     48     virtual NativeLayer nativeLayer() const;
     49 
     50     virtual bool setChildren(const Vector<GraphicsLayer*>&);
     51     virtual void addChild(GraphicsLayer *layer);
     52     virtual void addChildAtIndex(GraphicsLayer *layer, int index);
     53     virtual void addChildAbove(GraphicsLayer *layer, GraphicsLayer *sibling);
     54     virtual void addChildBelow(GraphicsLayer *layer, GraphicsLayer *sibling);
     55     virtual bool replaceChild(GraphicsLayer *oldChild, GraphicsLayer *newChild);
     56 
     57     virtual void removeFromParent();
     58 
     59     virtual void setPosition(const FloatPoint& inPoint);
     60     virtual void setAnchorPoint(const FloatPoint3D& inPoint);
     61     virtual void setSize(const FloatSize& inSize);
     62 
     63     virtual void setTransform(const TransformationMatrix&);
     64 
     65     virtual void setChildrenTransform(const TransformationMatrix&);
     66 
     67     virtual void setPreserves3D(bool);
     68     virtual void setMasksToBounds(bool);
     69     virtual void setDrawsContent(bool);
     70 
     71     virtual void setBackgroundColor(const Color&);
     72     virtual void clearBackgroundColor();
     73 
     74     virtual void setContentsOpaque(bool);
     75     virtual void setBackfaceVisibility(bool);
     76 
     77     virtual void setOpacity(float opacity);
     78 
     79     virtual void setNeedsDisplay();
     80     virtual void setNeedsDisplayInRect(const FloatRect&);
     81 
     82     virtual void setContentsRect(const IntRect&);
     83 
     84     virtual void setContentsToImage(Image*);
     85     virtual void setContentsToMedia(PlatformLayer*);
     86 
     87     virtual PlatformLayer* platformLayer() const;
     88 
     89     virtual void setDebugBackgroundColor(const Color&);
     90     virtual void setDebugBorder(const Color&, float borderWidth);
     91 
     92     virtual void setGeometryOrientation(CompositingCoordinatesOrientation);
     93 
     94     void notifySyncRequired() { if (m_client) m_client->notifySyncRequired(this); }
     95 
     96 private:
     97     void updateOpacityOnLayer();
     98 
     99     WKCACFLayer* primaryLayer() const  { return m_transformLayer.get() ? m_transformLayer.get() : m_layer.get(); }
    100     WKCACFLayer* hostLayerForSublayers() const;
    101     WKCACFLayer* layerForSuperlayer() const;
    102 
    103     CompositingCoordinatesOrientation defaultContentsOrientation() const;
    104     void updateSublayerList();
    105     void updateLayerPosition();
    106     void updateLayerSize();
    107     void updateAnchorPoint();
    108     void updateTransform();
    109     void updateChildrenTransform();
    110     void updateMasksToBounds();
    111     void updateContentsOpaque();
    112     void updateBackfaceVisibility();
    113     void updateLayerPreserves3D();
    114     void updateLayerDrawsContent();
    115     void updateLayerBackgroundColor();
    116 
    117     void updateContentsImage();
    118     void updateContentsMedia();
    119     void updateContentsRect();
    120     void updateGeometryOrientation();
    121 
    122     void setupContentsLayer(WKCACFLayer*);
    123     WKCACFLayer* contentsLayer() const { return m_contentsLayer.get(); }
    124 
    125     RefPtr<WKCACFLayer> m_layer;
    126     RefPtr<WKCACFLayer> m_transformLayer;
    127     RefPtr<WKCACFLayer> m_contentsLayer;
    128 
    129     enum ContentsLayerPurpose {
    130         NoContentsLayer = 0,
    131         ContentsLayerForImage,
    132         ContentsLayerForMedia
    133     };
    134 
    135     ContentsLayerPurpose m_contentsLayerPurpose;
    136     bool m_contentsLayerHasBackgroundColor : 1;
    137     RetainPtr<CGImageRef> m_pendingContentsImage;
    138 };
    139 
    140 } // namespace WebCore
    141 
    142 #endif // USE(ACCELERATED_COMPOSITING)
    143 
    144 #endif // GraphicsLayerCACF_h_
    145