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/*
* Copyright (C) 2012, 2014-2015 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
#if ENABLE(ASYNC_SCROLLING)
#include "ScrollSnapOffsetsInfo.h"
#include "ScrollTypes.h"
#include "ScrollingCoordinator.h"
#include "ScrollingStateNode.h"
#if PLATFORM(COCOA)
OBJC_CLASS NSScrollerImp;
#endif
namespace WebCore {
struct ScrollbarHoverState {
bool mouseIsOverHorizontalScrollbar { false };
bool mouseIsOverVerticalScrollbar { false };
bool operator==(const ScrollbarHoverState& other) const
{
return mouseIsOverHorizontalScrollbar == other.mouseIsOverHorizontalScrollbar
&& mouseIsOverVerticalScrollbar == other.mouseIsOverVerticalScrollbar;
}
};
struct MouseLocationState {
IntPoint locationInHorizontalScrollbar;
IntPoint locationInVerticalScrollbar;
};
struct ScrollbarEnabledState {
bool horizontalScrollbarIsEnabled { false };
bool verticalScrollbarIsEnabled { false };
};
class ScrollingStateScrollingNode : public ScrollingStateNode {
public:
virtual ~ScrollingStateScrollingNode();
const FloatSize& scrollableAreaSize() const { return m_scrollableAreaSize; }
WEBCORE_EXPORT void setScrollableAreaSize(const FloatSize&);
const FloatSize& totalContentsSize() const { return m_totalContentsSize; }
WEBCORE_EXPORT void setTotalContentsSize(const FloatSize&);
const FloatSize& reachableContentsSize() const { return m_reachableContentsSize; }
WEBCORE_EXPORT void setReachableContentsSize(const FloatSize&);
const FloatPoint& scrollPosition() const { return m_scrollPosition; }
WEBCORE_EXPORT void setScrollPosition(const FloatPoint&);
const IntPoint& scrollOrigin() const { return m_scrollOrigin; }
WEBCORE_EXPORT void setScrollOrigin(const IntPoint&);
const FloatScrollSnapOffsetsInfo& snapOffsetsInfo() const { return m_snapOffsetsInfo; }
WEBCORE_EXPORT void setSnapOffsetsInfo(const FloatScrollSnapOffsetsInfo& newOffsetsInfo);
std::optional<unsigned> currentHorizontalSnapPointIndex() const { return m_currentHorizontalSnapPointIndex; }
WEBCORE_EXPORT void setCurrentHorizontalSnapPointIndex(std::optional<unsigned>);
std::optional<unsigned> currentVerticalSnapPointIndex() const { return m_currentVerticalSnapPointIndex; }
WEBCORE_EXPORT void setCurrentVerticalSnapPointIndex(std::optional<unsigned>);
const ScrollableAreaParameters& scrollableAreaParameters() const { return m_scrollableAreaParameters; }
WEBCORE_EXPORT void setScrollableAreaParameters(const ScrollableAreaParameters& params);
#if ENABLE(SCROLLING_THREAD)
OptionSet<SynchronousScrollingReason> synchronousScrollingReasons() const { return m_synchronousScrollingReasons; }
WEBCORE_EXPORT void setSynchronousScrollingReasons(OptionSet<SynchronousScrollingReason>);
bool hasSynchronousScrollingReasons() const { return !m_synchronousScrollingReasons.isEmpty(); }
#endif
const RequestedKeyboardScrollData& keyboardScrollData() const { return m_keyboardScrollData; }
WEBCORE_EXPORT void setKeyboardScrollData(const RequestedKeyboardScrollData&);
const RequestedScrollData& requestedScrollData() const { return m_requestedScrollData; }
enum class CanMergeScrollData : bool { No, Yes };
WEBCORE_EXPORT void setRequestedScrollData(RequestedScrollData&&, CanMergeScrollData = CanMergeScrollData::Yes);
WEBCORE_EXPORT bool hasScrollPositionRequest() const;
bool isMonitoringWheelEvents() const { return m_isMonitoringWheelEvents; }
WEBCORE_EXPORT void setIsMonitoringWheelEvents(bool);
const LayerRepresentation& scrollContainerLayer() const { return m_scrollContainerLayer; }
WEBCORE_EXPORT void setScrollContainerLayer(const LayerRepresentation&);
// This is a layer with the contents that move.
const LayerRepresentation& scrolledContentsLayer() const { return m_scrolledContentsLayer; }
WEBCORE_EXPORT void setScrolledContentsLayer(const LayerRepresentation&);
const LayerRepresentation& horizontalScrollbarLayer() const { return m_horizontalScrollbarLayer; }
WEBCORE_EXPORT void setHorizontalScrollbarLayer(const LayerRepresentation&);
const LayerRepresentation& verticalScrollbarLayer() const { return m_verticalScrollbarLayer; }
WEBCORE_EXPORT void setVerticalScrollbarLayer(const LayerRepresentation&);
#if PLATFORM(MAC)
NSScrollerImp *verticalScrollerImp() const { return m_verticalScrollerImp.get(); }
NSScrollerImp *horizontalScrollerImp() const { return m_horizontalScrollerImp.get(); }
#endif
ScrollbarHoverState scrollbarHoverState() const { return m_scrollbarHoverState; }
WEBCORE_EXPORT void setScrollbarHoverState(ScrollbarHoverState);
ScrollbarEnabledState scrollbarEnabledState() const { return m_scrollbarEnabledState; }
WEBCORE_EXPORT void setScrollbarEnabledState(ScrollbarOrientation, bool);
void setScrollerImpsFromScrollbars(Scrollbar* verticalScrollbar, Scrollbar* horizontalScrollbar);
WEBCORE_EXPORT void setMouseIsOverContentArea(bool);
bool mouseIsOverContentArea() const { return m_mouseIsOverContentArea; }
WEBCORE_EXPORT void setMouseMovedInContentArea(const MouseLocationState&);
const MouseLocationState& mouseLocationState() const { return m_mouseLocationState; }
protected:
ScrollingStateScrollingNode(ScrollingStateTree&, ScrollingNodeType, ScrollingNodeID);
ScrollingStateScrollingNode(const ScrollingStateScrollingNode&, ScrollingStateTree&);
OptionSet<Property> applicableProperties() const override;
void dumpProperties(WTF::TextStream&, OptionSet<ScrollingStateTreeAsTextBehavior>) const override;
private:
FloatSize m_scrollableAreaSize;
FloatSize m_totalContentsSize;
FloatSize m_reachableContentsSize;
FloatPoint m_scrollPosition;
IntPoint m_scrollOrigin;
FloatScrollSnapOffsetsInfo m_snapOffsetsInfo;
std::optional<unsigned> m_currentHorizontalSnapPointIndex;
std::optional<unsigned> m_currentVerticalSnapPointIndex;
LayerRepresentation m_scrollContainerLayer;
LayerRepresentation m_scrolledContentsLayer;
LayerRepresentation m_horizontalScrollbarLayer;
LayerRepresentation m_verticalScrollbarLayer;
ScrollbarHoverState m_scrollbarHoverState;
MouseLocationState m_mouseLocationState;
ScrollbarEnabledState m_scrollbarEnabledState;
#if PLATFORM(MAC)
RetainPtr<NSScrollerImp> m_verticalScrollerImp;
RetainPtr<NSScrollerImp> m_horizontalScrollerImp;
#endif
ScrollableAreaParameters m_scrollableAreaParameters;
RequestedScrollData m_requestedScrollData;
RequestedKeyboardScrollData m_keyboardScrollData;
#if ENABLE(SCROLLING_THREAD)
OptionSet<SynchronousScrollingReason> m_synchronousScrollingReasons;
#endif
bool m_isMonitoringWheelEvents { false };
bool m_mouseIsOverContentArea { false };
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_SCROLLING_STATE_NODE(ScrollingStateScrollingNode, isScrollingNode())
#endif // ENABLE(ASYNC_SCROLLING)
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