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/*
* Copyright (c) 2010, 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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 ScrollAnimatorWin_h
#define ScrollAnimatorWin_h
#if ENABLE(SMOOTH_SCROLLING)
#include "ScrollAnimator.h"
#include "Timer.h"
namespace WebCore {
class ScrollAnimatorWin : public ScrollAnimator {
public:
ScrollAnimatorWin(ScrollableArea*);
virtual ~ScrollAnimatorWin();
virtual bool scroll(ScrollbarOrientation, ScrollGranularity, float step, float multiplier);
virtual void scrollToOffsetWithoutAnimation(const FloatPoint&);
private:
struct PerAxisData {
PerAxisData(ScrollAnimatorWin* parent, float* currentPos);
float* m_currentPos;
float m_desiredPos;
float m_currentVelocity;
float m_desiredVelocity;
double m_lastAnimationTime;
Timer<ScrollAnimatorWin> m_animationTimer;
};
static double accelerationTime();
static const double animationTimerDelay;
void animationTimerFired(Timer<ScrollAnimatorWin>*);
void stopAnimationTimerIfNeeded(PerAxisData*);
void animateScroll(PerAxisData*);
PerAxisData m_horizontalData;
PerAxisData m_verticalData;
};
} // namespace WebCore
#endif // ENABLE(SMOOTH_SCROLLING)
#endif // ScrollAnimatorWin_h
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