119 lines
4.0 KiB
C++
119 lines
4.0 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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#pragma once
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#include "ScrollAnimation.h"
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#include <wtf/RunLoop.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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class ScrollAnimationSmooth final: public ScrollAnimation {
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public:
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using ScrollExtentsCallback = WTF::Function<ScrollExtents(void)>;
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using NotifyPositionChangedCallback = WTF::Function<void(FloatPoint&&)>;
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using NotifyAnimationStoppedCallback = WTF::Function<void(void)>;
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ScrollAnimationSmooth(ScrollExtentsCallback&&, const FloatPoint& position, NotifyPositionChangedCallback&&, NotifyAnimationStoppedCallback&&);
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virtual ~ScrollAnimationSmooth();
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enum class Curve {
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Linear,
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Quadratic,
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Cubic,
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Quartic,
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Bounce
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};
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private:
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bool scroll(ScrollbarOrientation, ScrollGranularity, float step, float multiplier) override;
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void scroll(const FloatPoint&) override;
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void stop() override;
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void updateVisibleLengths() override;
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void setCurrentPosition(const FloatPoint&) override;
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bool isActive() const override;
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struct PerAxisData {
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PerAxisData() = delete;
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PerAxisData(ScrollbarOrientation, const FloatPoint& position, ScrollExtentsCallback&);
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PerAxisData(float position, int length)
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: currentPosition(position)
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, desiredPosition(position)
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, visibleLength(length)
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{
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}
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float currentPosition { 0 };
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double currentVelocity { 0 };
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double desiredPosition { 0 };
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double desiredVelocity { 0 };
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double startPosition { 0 };
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MonotonicTime startTime;
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double startVelocity { 0 };
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Seconds animationTime;
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MonotonicTime lastAnimationTime;
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double attackPosition { 0 };
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Seconds attackTime;
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Curve attackCurve { Curve::Quadratic };
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double releasePosition { 0 };
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Seconds releaseTime;
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Curve releaseCurve { Curve::Quadratic };
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int visibleLength { 0 };
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};
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bool updatePerAxisData(PerAxisData&, ScrollGranularity, float newPosition, float minScrollPosition, float maxScrollPosition, double smoothFactor = 1);
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bool animateScroll(PerAxisData&, MonotonicTime currentTime);
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void requestAnimationTimerFired();
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void startNextTimer(Seconds delay);
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void animationTimerFired();
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ScrollExtentsCallback m_scrollExtentsFunction;
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NotifyPositionChangedCallback m_notifyPositionChangedFunction;
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NotifyAnimationStoppedCallback m_notifyAnimationStoppedFunction;
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PerAxisData m_horizontalData;
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PerAxisData m_verticalData;
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MonotonicTime m_startTime;
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RunLoop::Timer<ScrollAnimationSmooth> m_animationTimer;
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};
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} // namespace WebCore
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