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/*
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TiledDrawingArea_h
#define TiledDrawingArea_h
#if ENABLE(TILED_BACKING_STORE)
#include "DrawingArea.h"
#include "RunLoop.h"
#include <WebCore/IntRect.h>
#include <wtf/Vector.h>
namespace WebKit {
class UpdateChunk;
class TiledDrawingArea : public DrawingArea {
public:
explicit TiledDrawingArea(WebPage*);
virtual ~TiledDrawingArea();
virtual void setNeedsDisplay(const WebCore::IntRect&);
virtual void scroll(const WebCore::IntRect& scrollRect, const WebCore::IntSize& scrollDelta);
virtual void display();
#if USE(ACCELERATED_COMPOSITING)
virtual void attachCompositingContext() { }
virtual void detachCompositingContext() { }
virtual void setRootCompositingLayer(WebCore::GraphicsLayer*) { }
virtual void scheduleCompositingLayerSync() { }
virtual void syncCompositingLayers() { }
#endif
virtual void didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*);
private:
void scheduleDisplay();
// CoreIPC message handlers.
void setSize(const WebCore::IntSize& viewSize);
void suspendPainting();
void resumePainting();
void didUpdate();
void updateTile(int tileID, const WebCore::IntRect& dirtyRect, float scale);
// Platform overrides
void paintIntoUpdateChunk(UpdateChunk*, float scale);
void tileUpdateTimerFired();
WebCore::IntRect m_dirtyRect;
bool m_isWaitingForUpdate;
bool m_shouldPaint;
RunLoop::Timer<TiledDrawingArea> m_displayTimer;
struct TileUpdate {
int tileID;
WebCore::IntRect dirtyRect;
float scale;
};
typedef HashMap<int, TileUpdate> UpdateMap;
UpdateMap m_pendingUpdates;
RunLoop::Timer<TiledDrawingArea> m_tileUpdateTimer;
};
} // namespace WebKit
#endif // TILED_BACKING_STORE
#endif // TiledDrawingArea_h
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