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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 LayerTreeHost_h
#define LayerTreeHost_h
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class IntRect;
class IntSize;
class GraphicsLayer;
}
namespace WebKit {
class LayerTreeContext;
class UpdateInfo;
class WebPage;
class LayerTreeHost : public RefCounted<LayerTreeHost> {
public:
static PassRefPtr<LayerTreeHost> create(WebPage*);
virtual ~LayerTreeHost();
static bool supportsAcceleratedCompositing();
virtual const LayerTreeContext& layerTreeContext() = 0;
virtual void scheduleLayerFlush() = 0;
virtual void setShouldNotifyAfterNextScheduledLayerFlush(bool) = 0;
virtual void setRootCompositingLayer(WebCore::GraphicsLayer*) = 0;
virtual void invalidate() = 0;
virtual void setNonCompositedContentsNeedDisplay(const WebCore::IntRect&) = 0;
virtual void scrollNonCompositedContents(const WebCore::IntRect& scrollRect, const WebCore::IntSize& scrollOffset) = 0;
virtual void forceRepaint() = 0;
virtual void sizeDidChange(const WebCore::IntSize& newSize) = 0;
virtual void didInstallPageOverlay() = 0;
virtual void didUninstallPageOverlay() = 0;
virtual void setPageOverlayNeedsDisplay(const WebCore::IntRect&) = 0;
virtual void pauseRendering() { }
virtual void resumeRendering() { }
// If a derived class overrides this function to return true, the derived class must also
// override the functions beneath it.
virtual bool participatesInDisplay() { return false; }
virtual bool needsDisplay() { ASSERT_NOT_REACHED(); return false; }
virtual double timeUntilNextDisplay() { ASSERT_NOT_REACHED(); return 0; }
virtual void display(UpdateInfo&) { ASSERT_NOT_REACHED(); }
protected:
explicit LayerTreeHost(WebPage*);
WebPage* m_webPage;
};
#if !PLATFORM(WIN)
inline bool LayerTreeHost::supportsAcceleratedCompositing()
{
return true;
}
#endif
} // namespace WebKit
#endif // LayerTreeHost_h
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