1 /* 2 * Copyright (C) 2010 Google 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 32 #ifndef ContentLayerChromium_h 33 #define ContentLayerChromium_h 34 35 #if USE(ACCELERATED_COMPOSITING) 36 37 #include "LayerChromium.h" 38 #include "LayerTilerChromium.h" 39 #include "TextureManager.h" 40 41 namespace WebCore { 42 43 class LayerTexture; 44 45 // A Layer that requires a GraphicsContext to render its contents. 46 class ContentLayerChromium : public LayerChromium { 47 friend class LayerRendererChromium; 48 public: 49 enum TilingOption { AlwaysTile, NeverTile, AutoTile }; 50 51 static PassRefPtr<ContentLayerChromium> create(GraphicsLayerChromium* owner = 0); 52 53 virtual ~ContentLayerChromium(); 54 55 virtual void paintContentsIfDirty(const IntRect& targetSurfaceRect); 56 virtual void updateCompositorResources(); 57 virtual void setIsMask(bool); 58 virtual void bindContentsTexture(); 59 60 virtual void draw(const IntRect& targetSurfaceRect); drawsContent()61 virtual bool drawsContent() const { return m_owner && m_owner->drawsContent() && (!m_tiler || !m_tiler->skipsDraw()); } 62 63 protected: 64 explicit ContentLayerChromium(GraphicsLayerChromium* owner); 65 layerTypeAsString()66 virtual const char* layerTypeAsString() const { return "ContentLayer"; } 67 virtual void dumpLayerProperties(TextStream&, int indent) const; 68 69 virtual void setLayerRenderer(LayerRendererChromium*); 70 71 virtual IntRect layerBounds() const; 72 73 virtual TransformationMatrix tilingTransform(); 74 75 // For a given render surface rect that this layer will be transformed and 76 // drawn into, return the layer space rect that is visible in that surface. 77 IntRect visibleLayerRect(const IntRect&); 78 79 void updateLayerSize(const IntSize&); 80 void createTilerIfNeeded(); 81 void setTilingOption(TilingOption); 82 83 OwnPtr<LayerTilerChromium> m_tiler; 84 TilingOption m_tilingOption; 85 }; 86 87 } 88 #endif // USE(ACCELERATED_COMPOSITING) 89 90 #endif 91