1 /* 2 * Copyright (C) 2010 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 WebTiledLayer_h 27 #define WebTiledLayer_h 28 29 #if USE(ACCELERATED_COMPOSITING) 30 31 #include "WebLayer.h" 32 33 namespace WebCore { 34 35 class WebTiledLayer : public WebLayer { 36 public: 37 static PassRefPtr<WebTiledLayer> create(const CGSize& tileSize, GraphicsLayer* owner); 38 39 virtual ~WebTiledLayer(); 40 41 virtual void setBounds(const CGRect&); 42 virtual void setFrame(const CGRect&); 43 44 protected: 45 WebTiledLayer(const CGSize& tileSize, GraphicsLayer* owner); 46 47 // Overridden from WKCACFLayer 48 virtual WKCACFLayer* internalSublayerAtIndex(int) const; 49 virtual int internalIndexOfSublayer(const WKCACFLayer*); 50 51 virtual size_t internalSublayerCount() const; 52 virtual void internalInsertSublayer(PassRefPtr<WKCACFLayer>, size_t index); 53 54 virtual void internalRemoveAllSublayers(); 55 virtual void internalSetSublayers(const Vector<RefPtr<WKCACFLayer> >&); 56 57 virtual void internalSetNeedsDisplay(const CGRect* dirtyRect); 58 59 #ifndef NDEBUG 60 virtual void internalCheckLayerConsistency(); 61 #endif 62 63 private: 64 static void tileDisplayCallback(CACFLayerRef, CGContextRef); 65 void drawTile(CACFLayerRef, CGContextRef); 66 67 CGSize constrainedSize(const CGSize& size) const; 68 69 void addTile(); 70 void removeTile(); 71 CACFLayerRef tileAtIndex(int); 72 int tileCount() const; 73 74 void updateTiles(); 75 76 CGSize m_tileSize; 77 CGSize m_constrainedSize; 78 RetainPtr<CACFLayerRef> m_tileParent; 79 }; 80 81 } 82 83 #endif // USE(ACCELERATED_COMPOSITING) 84 85 #endif // WebTiledLayer_h 86
