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/*
* Copyright (C) 2023 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. ``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
* 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 "AnimationTimeline.h"
#include "Element.h"
#include "ScrollAxis.h"
#include "ScrollTimelineOptions.h"
#include "Styleable.h"
#include <wtf/Ref.h>
#include <wtf/WeakHashSet.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class AnimationTimelinesController;
class Document;
class Element;
class RenderStyle;
class ScrollableArea;
struct TimelineRange;
TextStream& operator<<(TextStream&, Scroller);
class ScrollTimeline : public AnimationTimeline {
public:
static Ref<ScrollTimeline> create(Document&, ScrollTimelineOptions&& = { });
static Ref<ScrollTimeline> create(const AtomString&, ScrollAxis);
static Ref<ScrollTimeline> create(Scroller, ScrollAxis);
static Ref<ScrollTimeline> createInactiveStyleOriginatedTimeline(const AtomString& name);
const WeakStyleable& sourceStyleable() const { return m_source; }
virtual Element* source() const;
void setSource(Element*);
void setSource(const Styleable&);
ScrollAxis axis() const { return m_axis; }
void setAxis(ScrollAxis axis) { m_axis = axis; }
const AtomString& name() const { return m_name; }
void setName(const AtomString& name) { m_name = name; }
bool isInactiveStyleOriginatedTimeline() const { return m_isInactiveStyleOriginatedTimeline; }
AnimationTimeline::ShouldUpdateAnimationsAndSendEvents documentWillUpdateAnimationsAndSendEvents() override;
AnimationTimelinesController* controller() const override;
std::optional<WebAnimationTime> currentTime() override;
TimelineRange defaultRange() const override;
WeakPtr<Element, WeakPtrImplWithEventTargetData> timelineScopeDeclaredElement() const { return m_timelineScopeElement; }
void setTimelineScopeElement(const Element&);
void clearTimelineScopeDeclaredElement() { m_timelineScopeElement = nullptr; }
virtual std::pair<WebAnimationTime, WebAnimationTime> intervalForAttachmentRange(const TimelineRange&) const;
void removeTimelineFromDocument(Element*);
struct ResolvedScrollDirection {
bool isVertical;
bool isReversed;
};
protected:
explicit ScrollTimeline(const AtomString&, ScrollAxis);
struct Data {
float scrollOffset { 0 };
float rangeStart { 0 };
float rangeEnd { 0 };
};
static float floatValueForOffset(const Length&, float);
virtual Data computeTimelineData() const;
static ScrollableArea* scrollableAreaForSourceRenderer(const RenderElement*, Document&);
std::optional<ResolvedScrollDirection> resolvedScrollDirection() const;
private:
explicit ScrollTimeline();
explicit ScrollTimeline(Scroller, ScrollAxis);
bool isScrollTimeline() const final { return true; }
void animationTimingDidChange(WebAnimation&) override;
struct CurrentTimeData {
float scrollOffset { 0 };
float maxScrollOffset { 0 };
};
void cacheCurrentTime();
WeakStyleable m_source;
ScrollAxis m_axis { ScrollAxis::Block };
AtomString m_name;
Scroller m_scroller { Scroller::Self };
WeakPtr<Element, WeakPtrImplWithEventTargetData> m_timelineScopeElement;
CurrentTimeData m_cachedCurrentTimeData { };
bool m_isInactiveStyleOriginatedTimeline { false };
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_ANIMATION_TIMELINE(ScrollTimeline, isScrollTimeline())
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