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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 LayerTreeHostCA_h
#define LayerTreeHostCA_h
#include "LayerTreeContext.h"
#include "LayerTreeHost.h"
#include <WebCore/GraphicsLayerClient.h>
#include <wtf/OwnPtr.h>
namespace WebKit {
class LayerTreeHostCA : public LayerTreeHost, WebCore::GraphicsLayerClient {
public:
virtual ~LayerTreeHostCA();
protected:
explicit LayerTreeHostCA(WebPage*);
WebCore::GraphicsLayer* rootLayer() const { return m_rootLayer.get(); }
void initialize();
void performScheduledLayerFlush();
// LayerTreeHost.
virtual void invalidate();
virtual void sizeDidChange(const WebCore::IntSize& newSize);
virtual void deviceScaleFactorDidChange();
virtual void forceRepaint();
virtual void setRootCompositingLayer(WebCore::GraphicsLayer*);
// LayerTreeHostCA
virtual void didPerformScheduledLayerFlush();
virtual bool flushPendingLayerChanges();
bool m_layerFlushSchedulingEnabled;
LayerTreeContext m_layerTreeContext;
private:
// LayerTreeHost.
virtual const LayerTreeContext& layerTreeContext();
virtual void setShouldNotifyAfterNextScheduledLayerFlush(bool);
virtual void setNonCompositedContentsNeedDisplay(const WebCore::IntRect&);
virtual void scrollNonCompositedContents(const WebCore::IntRect& scrollRect, const WebCore::IntSize& scrollOffset);
virtual void didInstallPageOverlay();
virtual void didUninstallPageOverlay();
virtual void setPageOverlayNeedsDisplay(const WebCore::IntRect&);
// GraphicsLayerClient
virtual void notifyAnimationStarted(const WebCore::GraphicsLayer*, double time);
virtual void notifyFlushRequired(const WebCore::GraphicsLayer*);
virtual void paintContents(const WebCore::GraphicsLayer*, WebCore::GraphicsContext&, WebCore::GraphicsLayerPaintingPhase, const WebCore::IntRect& clipRect);
virtual float deviceScaleFactor() const;
virtual void didCommitChangesForLayer(const WebCore::GraphicsLayer*) const { }
// LayerTreeHostCA
virtual void platformInitialize() = 0;
void createPageOverlayLayer();
void destroyPageOverlayLayer();
// Whether the layer tree host is valid or not.
bool m_isValid;
// Whether we should let the drawing area know the next time we've flushed
// layer tree changes.
bool m_notifyAfterScheduledLayerFlush;
// The root layer.
OwnPtr<WebCore::GraphicsLayer> m_rootLayer;
// The layer which contains all non-composited content.
OwnPtr<WebCore::GraphicsLayer> m_nonCompositedContentLayer;
// The page overlay layer. Will be null if there's no page overlay.
OwnPtr<WebCore::GraphicsLayer> m_pageOverlayLayer;
};
} // namespace WebKit
#endif // LayerTreeHostCA_h
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