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      1 /*
      2  * Copyright (C) 2009 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef GraphicsLayerAndroid_h
     18 #define GraphicsLayerAndroid_h
     19 
     20 #if USE(ACCELERATED_COMPOSITING)
     21 
     22 #include "FloatRect.h"
     23 #include "Frame.h"
     24 #include "GraphicsLayer.h"
     25 #include "GraphicsLayerClient.h"
     26 #include "LayerContent.h"
     27 #include "RefPtr.h"
     28 #include "ScrollableLayerAndroid.h"
     29 #include "SkBitmapRef.h"
     30 #include "Vector.h"
     31 
     32 class SkBitmapRef;
     33 class SkRegion;
     34 
     35 namespace WebCore {
     36 
     37 class FloatPoint3D;
     38 class Image;
     39 class LayerAndroid;
     40 class FixedBackgroundImageLayerAndroid;
     41 class ScrollableLayerAndroid;
     42 
     43 class GraphicsLayerAndroid : public GraphicsLayer {
     44 public:
     45 
     46     GraphicsLayerAndroid(GraphicsLayerClient*);
     47     virtual ~GraphicsLayerAndroid();
     48 
     49     virtual void setName(const String&);
     50 
     51     // for hosting this GraphicsLayer in a native layer hierarchy
     52     virtual NativeLayer nativeLayer() const;
     53 
     54     virtual bool setChildren(const Vector<GraphicsLayer*>&);
     55     virtual void addChild(GraphicsLayer*);
     56     virtual void addChildAtIndex(GraphicsLayer*, int index);
     57     virtual void addChildAbove(GraphicsLayer* layer, GraphicsLayer* sibling);
     58     virtual void addChildBelow(GraphicsLayer* layer, GraphicsLayer* sibling);
     59     virtual bool replaceChild(GraphicsLayer* oldChild, GraphicsLayer* newChild);
     60     virtual void setReplicatedLayer(GraphicsLayer* layer);
     61 
     62     virtual void removeFromParent();
     63 
     64     virtual void setPosition(const FloatPoint&);
     65     virtual void setPreserves3D(bool b);
     66     virtual void setAnchorPoint(const FloatPoint3D&);
     67     virtual void setSize(const FloatSize&);
     68 
     69     virtual void setBackfaceVisibility(bool b);
     70     virtual void setTransform(const TransformationMatrix&);
     71 
     72     virtual void setChildrenTransform(const TransformationMatrix&);
     73 
     74     virtual void setMaskLayer(GraphicsLayer*);
     75     virtual void setMasksToBounds(bool);
     76     virtual void setDrawsContent(bool);
     77 
     78     virtual void setBackgroundColor(const Color&);
     79     virtual void clearBackgroundColor();
     80 
     81     virtual void setContentsOpaque(bool);
     82 
     83     virtual void setOpacity(float);
     84 
     85     virtual void setNeedsDisplay();
     86     virtual void setNeedsDisplayInRect(const FloatRect&);
     87 
     88     virtual bool addAnimation(const KeyframeValueList& valueList,
     89                               const IntSize& boxSize,
     90                               const Animation* anim,
     91                               const String& keyframesName,
     92                               double beginTime);
     93     bool createTransformAnimationsFromKeyframes(const KeyframeValueList&,
     94                                                 const Animation*,
     95                                                 const String& keyframesName,
     96                                                 double beginTime,
     97                                                 const IntSize& boxSize);
     98     bool createAnimationFromKeyframes(const KeyframeValueList&,
     99                                       const Animation*,
    100                                       const String& keyframesName,
    101                                       double beginTime);
    102 
    103     virtual void removeAnimationsForProperty(AnimatedPropertyID);
    104     virtual void removeAnimationsForKeyframes(const String& keyframesName);
    105     virtual void pauseAnimation(const String& keyframesName);
    106 
    107     virtual void suspendAnimations(double time);
    108     virtual void resumeAnimations();
    109 
    110     virtual void setContentsToImage(Image*);
    111     virtual void setContentsToMedia(PlatformLayer*);
    112     virtual PlatformLayer* platformLayer() const;
    113 
    114     void pauseDisplay(bool state);
    115 
    116 #ifndef NDEBUG
    117     virtual void setDebugBackgroundColor(const Color&);
    118     virtual void setDebugBorder(const Color&, float borderWidth);
    119 #endif
    120 
    121     virtual void setZPosition(float);
    122 
    123     void gatherRootLayers(Vector<const RenderLayer*>&);
    124     virtual void syncCompositingState();
    125     virtual void syncCompositingStateForThisLayerOnly();
    126     void notifyClientAnimationStarted();
    127 
    128     LayerAndroid* contentLayer() { return m_contentLayer; }
    129     LayerAndroid* foregroundLayer() { return m_foregroundLayer; }
    130 
    131     static int instancesCount();
    132 
    133     virtual void updateScrollOffset();
    134 
    135 private:
    136 
    137     void askForSync();
    138     void syncPositionState();
    139     void syncChildren();
    140     void syncMask();
    141 
    142     void updatePositionedLayers();
    143     void updateScrollingLayers();
    144     void updateFixedBackgroundLayers();
    145 
    146     // with SkPicture, we always repaint the entire layer's content.
    147     bool repaint();
    148     void needsNotifyClient();
    149 
    150     SkPicture* paintPicture(const IntRect& rect);
    151     bool paintContext(LayerAndroid* layer,
    152                       const IntRect& rect,
    153                       bool checkOptimisations = true);
    154 
    155     bool m_needsSyncChildren;
    156     bool m_needsSyncMask;
    157     bool m_needsRepaint;
    158     bool m_needsNotifyClient;
    159 
    160     bool m_haveContents;
    161     bool m_newImage;
    162     Image* m_image;
    163 
    164     SkRegion m_dirtyRegion;
    165 
    166     LayerAndroid* m_contentLayer;
    167     FixedBackgroundImageLayerAndroid* m_fixedBackgroundLayer;
    168     LayerAndroid* m_foregroundLayer;
    169     LayerAndroid* m_foregroundClipLayer;
    170 };
    171 
    172 } // namespace WebCore
    173 
    174 
    175 #endif // USE(ACCELERATED_COMPOSITING)
    176 
    177 #endif // GraphicsLayerAndroid_h
    178