59 lines
2.1 KiB
C++
59 lines
2.1 KiB
C++
/*
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* Copyright (C) 2016 Igalia S.L.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef ScrollAnimation_h
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#define ScrollAnimation_h
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#include "ScrollTypes.h"
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namespace WebCore {
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class FloatPoint;
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class ScrollableArea;
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enum class ScrollClamping : bool;
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struct ScrollExtents {
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ScrollPosition minimumScrollPosition;
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ScrollPosition maximumScrollPosition;
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IntSize visibleSize;
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};
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class ScrollAnimation {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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virtual ~ScrollAnimation() { };
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virtual bool scroll(ScrollbarOrientation, ScrollGranularity, float /* step */, float /* multiplier */) { return true; };
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virtual void scroll(const FloatPoint&) { };
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virtual void stop() = 0;
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virtual void updateVisibleLengths() { };
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virtual void setCurrentPosition(const FloatPoint&) { };
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virtual void serviceAnimation() { };
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virtual bool isActive() const = 0;
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};
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} // namespace WebCore
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#endif // ScrollAnimation_h
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