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. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef ChunkedUpdateDrawingArea_h 27 #define ChunkedUpdateDrawingArea_h 28 29 #include "DrawingArea.h" 30 #include "RunLoop.h" 31 #include <WebCore/IntPoint.h> 32 33 namespace WebKit { 34 35 class UpdateChunk; 36 37 class ChunkedUpdateDrawingArea : public DrawingArea { 38 public: 39 explicit ChunkedUpdateDrawingArea(WebPage*); 40 virtual ~ChunkedUpdateDrawingArea(); 41 42 virtual void setNeedsDisplay(const WebCore::IntRect&); 43 virtual void scroll(const WebCore::IntRect& scrollRect, const WebCore::IntSize& scrollOffset); 44 virtual void display(); 45 virtual void forceRepaint(); 46 47 #if USE(ACCELERATED_COMPOSITING) setRootCompositingLayer(WebCore::GraphicsLayer *)48 virtual void setRootCompositingLayer(WebCore::GraphicsLayer*) { } scheduleCompositingLayerSync()49 virtual void scheduleCompositingLayerSync() { } syncCompositingLayers()50 virtual void syncCompositingLayers() { } 51 #endif 52 53 virtual void didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*); 54 55 private: 56 void scheduleDisplay(); 57 58 // CoreIPC message handlers. 59 void setSize(const WebCore::IntSize& viewSize); 60 void suspendPainting(); 61 void deprecatedResumePainting(bool forceRepaint); 62 void didUpdate(); 63 64 // Platform overrides 65 void paintIntoUpdateChunk(UpdateChunk*); 66 67 WebCore::IntRect m_dirtyRect; 68 bool m_isWaitingForUpdate; 69 bool m_paintingIsSuspended; 70 RunLoop::Timer<ChunkedUpdateDrawingArea> m_displayTimer; 71 }; 72 73 } // namespace WebKit 74 75 #endif // ChunkedUpdateDrawingArea_h 76