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/*
* Copyright (C) 2011 Apple Inc. All rights reserved.
*
* 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 DrawingAreaProxyImpl_h
#define DrawingAreaProxyImpl_h
#include "BackingStore.h"
#include "DrawingAreaProxy.h"
#include "LayerTreeContext.h"
namespace WebKit {
class Region;
class DrawingAreaProxyImpl : public DrawingAreaProxy {
public:
static PassOwnPtr<DrawingAreaProxyImpl> create(WebPageProxy*);
virtual ~DrawingAreaProxyImpl();
void paint(BackingStore::PlatformGraphicsContext, const WebCore::IntRect&, Region& unpaintedRegion);
private:
explicit DrawingAreaProxyImpl(WebPageProxy*);
// DrawingAreaProxy
virtual void didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*);
virtual void didReceiveSyncMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*, CoreIPC::ArgumentEncoder*);
virtual bool paint(const WebCore::IntRect&, PlatformDrawingContext);
virtual void sizeDidChange();
virtual void visibilityDidChange();
virtual void setPageIsVisible(bool);
virtual void attachCompositingContext(uint32_t contextID);
virtual void detachCompositingContext();
// CoreIPC message handlers
virtual void update(uint64_t sequenceNumber, const UpdateInfo&);
virtual void didSetSize(uint64_t sequenceNumber, const UpdateInfo&, const LayerTreeContext&);
virtual void enterAcceleratedCompositingMode(uint64_t sequenceNumber, const LayerTreeContext&);
virtual void exitAcceleratedCompositingMode(uint64_t sequenceNumber, const UpdateInfo&);
void incorporateUpdate(const UpdateInfo&);
void sendSetSize();
void waitForAndDispatchDidSetSize();
void enterAcceleratedCompositingMode(const LayerTreeContext&);
void exitAcceleratedCompositingMode();
bool isInAcceleratedCompositingMode() const { return !m_layerTreeContext.isEmpty(); }
// The current layer tree context.
LayerTreeContext m_layerTreeContext;
// Whether we've sent a SetSize message and are now waiting for a DidSetSize message.
// Used to throttle SetSize messages so we don't send them faster than the Web process can handle.
bool m_isWaitingForDidSetSize;
// The sequence number of the last DidSetSize message
uint64_t m_lastDidSetSizeSequenceNumber;
OwnPtr<BackingStore> m_backingStore;
};
} // namespace WebKit
#endif // DrawingAreaProxyImpl_h
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