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/*
* Copyright (C) 2012 Company 100, 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 CoordinatedImageBacking_h
#define CoordinatedImageBacking_h
#if USE(COORDINATED_GRAPHICS)
#include "Image.h"
#include "ShareableSurface.h"
#include "WebLayerTreeInfo.h"
#include <WebCore/Timer.h>
#include <wtf/RefCounted.h>
#include <wtf/Vector.h>
namespace WebKit {
class CoordinatedImageBacking : public RefCounted<CoordinatedImageBacking> {
public:
class Coordinator {
public:
virtual void createImageBacking(CoordinatedImageBackingID) = 0;
virtual void updateImageBacking(CoordinatedImageBackingID, const ShareableSurface::Handle&) = 0;
virtual void clearImageBackingContents(CoordinatedImageBackingID) = 0;
virtual void removeImageBacking(CoordinatedImageBackingID) = 0;
};
class Host {
public:
virtual bool imageBackingVisible() = 0;
};
static PassRefPtr<CoordinatedImageBacking> create(Coordinator*, PassRefPtr<WebCore::Image>);
virtual ~CoordinatedImageBacking();
static CoordinatedImageBackingID getCoordinatedImageBackingID(WebCore::Image*);
CoordinatedImageBackingID id() const { return m_id; }
void addHost(Host*);
void removeHost(Host*);
// When a new image is updated or an animated gif is progressed, CoordinatedGraphicsLayer calls markDirty().
void markDirty();
// Create, remove or update its backing.
void update();
private:
CoordinatedImageBacking(Coordinator*, PassRefPtr<WebCore::Image>);
void releaseSurfaceIfNeeded();
void updateVisibilityIfNeeded(bool& changedToVisible);
void clearContentsTimerFired(WebCore::Timer<CoordinatedImageBacking>*);
Coordinator* m_coordinator;
RefPtr<WebCore::Image> m_image;
WebCore::NativeImagePtr m_nativeImagePtr;
CoordinatedImageBackingID m_id;
Vector<Host*> m_hosts;
RefPtr<ShareableSurface> m_surface;
OwnPtr<ShareableSurface::Handle> m_handle;
WebCore::Timer<CoordinatedImageBacking> m_clearContentsTimer;
bool m_isDirty;
bool m_isVisible;
};
}
#endif
#endif // CoordinatedImageBacking_H
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