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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 GraphicsLayerClient_h
     27 #define GraphicsLayerClient_h
     28 
     29 #if USE(ACCELERATED_COMPOSITING)
     30 
     31 namespace WebCore {
     32 
     33 class GraphicsContext;
     34 class GraphicsLayer;
     35 #if PLATFORM(ANDROID)
     36 class RenderLayer;
     37 #endif
     38 class IntPoint;
     39 class IntRect;
     40 class FloatPoint;
     41 
     42 enum GraphicsLayerPaintingPhase {
     43     GraphicsLayerPaintBackground = (1 << 0),
     44     GraphicsLayerPaintForeground = (1 << 1),
     45     GraphicsLayerPaintMask = (1 << 2),
     46     GraphicsLayerPaintAll = (GraphicsLayerPaintBackground | GraphicsLayerPaintForeground | GraphicsLayerPaintMask)
     47 };
     48 
     49 enum AnimatedPropertyID {
     50     AnimatedPropertyInvalid,
     51     AnimatedPropertyWebkitTransform,
     52     AnimatedPropertyOpacity,
     53     AnimatedPropertyBackgroundColor
     54 };
     55 
     56 class GraphicsLayerClient {
     57 public:
     58     virtual ~GraphicsLayerClient() {}
     59 
     60 #if PLATFORM(ANDROID)
     61     virtual RenderLayer* owningLayer() const { return 0; }
     62 #endif
     63 
     64     // Callback for when hardware-accelerated animation started.
     65     virtual void notifyAnimationStarted(const GraphicsLayer*, double time) = 0;
     66 
     67     // Notification that a layer property changed that requires a subsequent call to syncCompositingState()
     68     // to appear on the screen.
     69     virtual void notifySyncRequired(const GraphicsLayer*) = 0;
     70 
     71     virtual void paintContents(const GraphicsLayer*, GraphicsContext&, GraphicsLayerPaintingPhase, const IntRect& inClip) = 0;
     72 
     73     virtual bool showDebugBorders() const = 0;
     74     virtual bool showRepaintCounter() const = 0;
     75 };
     76 
     77 } // namespace WebCore
     78 
     79 #endif // USE(ACCELERATED_COMPOSITING)
     80 
     81 #endif // GraphicsLayerClient_h
     82