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/*
* Copyright (C) 2011 Google 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 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 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 WebCompositorInputHandlerImpl_h
#define WebCompositorInputHandlerImpl_h
#include "WebActiveWheelFlingParameters.h"
#include "WebCompositor.h"
#include "WebCompositorInputHandler.h"
#include "WebInputEvent.h"
#include "cc/CCGestureCurve.h"
#include "cc/CCInputHandler.h"
#include <wtf/HashSet.h>
#include <wtf/Noncopyable.h>
#include <wtf/OwnPtr.h>
namespace WTF {
class Mutex;
}
namespace WebCore {
class IntPoint;
class CCGestureCurveTarget;
class CCInputHandlerClient;
class CCThread;
}
namespace WebKit {
class WebCompositorInputHandlerClient;
class WebCompositorInputHandlerImpl : public WebCompositorInputHandler, public WebCore::CCInputHandler, public WebCore::CCGestureCurveTarget {
WTF_MAKE_NONCOPYABLE(WebCompositorInputHandlerImpl);
public:
static PassOwnPtr<WebCompositorInputHandlerImpl> create(WebCore::CCInputHandlerClient*);
static WebCompositorInputHandler* fromIdentifier(int identifier);
virtual ~WebCompositorInputHandlerImpl();
// WebCompositorInputHandler implementation.
virtual void setClient(WebCompositorInputHandlerClient*);
virtual void handleInputEvent(const WebInputEvent&);
// WebCore::CCInputHandler implementation.
virtual int identifier() const;
virtual void animate(double monotonicTime);
// WebCore::CCGestureCurveTarget implementation.
virtual void scrollBy(const WebCore::IntPoint&);
private:
explicit WebCompositorInputHandlerImpl(WebCore::CCInputHandlerClient*);
enum EventDisposition { DidHandle, DidNotHandle, DropEvent };
// This function processes the input event and determines the disposition, but does not make
// any calls out to the WebCompositorInputHandlerClient. Some input types defer to helpers.
EventDisposition handleInputEventInternal(const WebInputEvent&);
EventDisposition handleGestureFling(const WebGestureEvent&);
// Returns true if we actually had an active fling to cancel.
bool cancelCurrentFling();
OwnPtr<WebCore::CCActiveGestureAnimation> m_wheelFlingAnimation;
// Parameters for the active fling animation, stored in case we need to transfer it out later.
WebActiveWheelFlingParameters m_wheelFlingParameters;
WebCompositorInputHandlerClient* m_client;
int m_identifier;
WebCore::CCInputHandlerClient* m_inputHandlerClient;
#ifndef NDEBUG
bool m_expectScrollUpdateEnd;
bool m_expectPinchUpdateEnd;
#endif
bool m_gestureScrollStarted;
static int s_nextAvailableIdentifier;
static HashSet<WebCompositorInputHandlerImpl*>* s_compositors;
};
}
#endif // WebCompositorImpl_h
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