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/*
* Copyright (C) 2021 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.
*/
#pragma once
#include "ScrollAnimation.h"
#if HAVE(RUBBER_BANDING)
namespace WebCore {
class ScrollAnimationRubberBand final: public ScrollAnimation {
public:
ScrollAnimationRubberBand(ScrollAnimationClient&);
virtual ~ScrollAnimationRubberBand();
// targetOffset is the scroll offset when the animation has finished (i.e. scrolled to an edge).
bool startRubberBandAnimation(const FloatSize& initialVelocity, const FloatSize& initialOverscroll);
private:
void updateScrollExtents() final;
void serviceAnimation(MonotonicTime) final;
bool retargetActiveAnimation(const FloatPoint&) final;
ScrollClamping clamping() const final { return ScrollClamping::Unclamped; }
String debugDescription() const final;
bool animateScroll(MonotonicTime);
FloatSize m_initialVelocity;
FloatSize m_initialOverscroll;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_SCROLL_ANIMATION(WebCore::ScrollAnimationRubberBand, type() == WebCore::ScrollAnimation::Type::RubberBand)
#endif // HAVE(RUBBER_BANDING)