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/*
* Copyright (c) 2016 Igalia S.L.
*
* 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.
*/
#pragma once
#include "ScrollAnimator.h"
#include "Timer.h"
namespace WebCore {
class ScrollAnimation;
class ScrollAnimationKinetic;
class ScrollAnimatorGeneric final : public ScrollAnimator {
public:
explicit ScrollAnimatorGeneric(ScrollableArea&);
virtual ~ScrollAnimatorGeneric();
private:
bool scrollToPositionWithoutAnimation(const FloatPoint&, ScrollClamping) override;
bool handleWheelEvent(const PlatformWheelEvent&) override;
void didAddVerticalScrollbar(Scrollbar*) override;
void didAddHorizontalScrollbar(Scrollbar*) override;
void willRemoveVerticalScrollbar(Scrollbar*) override;
void willRemoveHorizontalScrollbar(Scrollbar*) override;
void mouseEnteredContentArea() override;
void mouseExitedContentArea() override;
void mouseMovedInContentArea() override;
void contentAreaDidShow() override;
void contentAreaDidHide() override;
void notifyContentAreaScrolled(const FloatSize& delta) override;
void lockOverlayScrollbarStateToHidden(bool) override;
void updatePosition(FloatPoint&&);
void overlayScrollbarAnimationTimerFired();
void showOverlayScrollbars();
void hideOverlayScrollbars();
void updateOverlayScrollbarsOpacity();
std::unique_ptr<ScrollAnimationKinetic> m_kineticAnimation;
Scrollbar* m_horizontalOverlayScrollbar { nullptr };
Scrollbar* m_verticalOverlayScrollbar { nullptr };
bool m_overlayScrollbarsLocked { false };
Timer m_overlayScrollbarAnimationTimer;
double m_overlayScrollbarAnimationSource { 0 };
double m_overlayScrollbarAnimationTarget { 0 };
double m_overlayScrollbarAnimationCurrent { 0 };
MonotonicTime m_overlayScrollbarAnimationStartTime;
MonotonicTime m_overlayScrollbarAnimationEndTime;
};
} // namespace WebCore
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