1 /* 2 * Copyright (C) 2010 Apple Inc. All rights reserved. 3 * Portions Copyright (c) 2010 Motorola Mobility, Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 24 * THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef DrawingAreaProxy_h 28 #define DrawingAreaProxy_h 29 30 #include "DrawingAreaInfo.h" 31 #include <stdint.h> 32 #include <WebCore/IntSize.h> 33 #include <wtf/Noncopyable.h> 34 35 #if PLATFORM(QT) 36 class QPainter; 37 #elif PLATFORM(GTK) 38 typedef struct _cairo cairo_t; 39 #endif 40 41 namespace CoreIPC { 42 class ArgumentDecoder; 43 class Connection; 44 class MessageID; 45 } 46 47 namespace WebCore { 48 class IntRect; 49 } 50 51 namespace WebKit { 52 53 class LayerTreeContext; 54 class UpdateInfo; 55 class WebPageProxy; 56 57 #if PLATFORM(MAC) 58 typedef CGContextRef PlatformDrawingContext; 59 #elif PLATFORM(WIN) 60 typedef HDC PlatformDrawingContext; 61 #elif PLATFORM(QT) 62 typedef QPainter* PlatformDrawingContext; 63 #elif PLATFORM(GTK) 64 typedef cairo_t* PlatformDrawingContext; 65 #endif 66 67 class DrawingAreaProxy { 68 WTF_MAKE_NONCOPYABLE(DrawingAreaProxy); 69 70 public: 71 virtual ~DrawingAreaProxy(); 72 type()73 DrawingAreaType type() const { return m_type; } 74 75 #if PLATFORM(MAC) || PLATFORM(WIN) 76 void didReceiveDrawingAreaProxyMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*); 77 #endif 78 79 virtual void didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*) = 0; 80 81 // Returns true if painting was successful, false otherwise. 82 virtual bool paint(const WebCore::IntRect&, PlatformDrawingContext) = 0; 83 84 virtual void sizeDidChange() = 0; 85 86 // FIXME: These should be pure virtual. visibilityDidChange()87 virtual void visibilityDidChange() { } setBackingStoreIsDiscardable(bool)88 virtual void setBackingStoreIsDiscardable(bool) { } 89 90 virtual void setPageIsVisible(bool isVisible) = 0; 91 size()92 const WebCore::IntSize& size() const { return m_size; } 93 void setSize(const WebCore::IntSize&, const WebCore::IntSize& scrollOffset); 94 95 protected: 96 explicit DrawingAreaProxy(DrawingAreaType, WebPageProxy*); 97 98 DrawingAreaType m_type; 99 WebPageProxy* m_webPageProxy; 100 101 WebCore::IntSize m_size; 102 WebCore::IntSize m_scrollOffset; 103 104 private: 105 // CoreIPC message handlers. 106 // FIXME: These should be pure virtual. update(uint64_t backingStoreStateID,const UpdateInfo &)107 virtual void update(uint64_t backingStoreStateID, const UpdateInfo&) { } didUpdateBackingStoreState(uint64_t backingStoreStateID,const UpdateInfo &,const LayerTreeContext &)108 virtual void didUpdateBackingStoreState(uint64_t backingStoreStateID, const UpdateInfo&, const LayerTreeContext&) { } 109 #if USE(ACCELERATED_COMPOSITING) enterAcceleratedCompositingMode(uint64_t backingStoreStateID,const LayerTreeContext &)110 virtual void enterAcceleratedCompositingMode(uint64_t backingStoreStateID, const LayerTreeContext&) { } exitAcceleratedCompositingMode(uint64_t backingStoreStateID,const UpdateInfo &)111 virtual void exitAcceleratedCompositingMode(uint64_t backingStoreStateID, const UpdateInfo&) { } 112 #endif 113 }; 114 115 } // namespace WebKit 116 117 #endif // DrawingAreaProxy_h 118