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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) || USE(COORDINATED_GRAPHICS)
#include "ScrollSnapOffsetsInfo.h"
#include "ScrollTypes.h"
#include "ScrollingCoordinator.h"
#include "ScrollingStateNode.h"
namespace WebCore {
class ScrollingStateScrollingNode : public ScrollingStateNode {
public:
virtual ~ScrollingStateScrollingNode();
enum ChangedProperty {
ScrollableAreaSize = NumStateNodeBits,
TotalContentsSize,
ReachableContentsSize,
ScrollPosition,
ScrollOrigin,
ScrollableAreaParams,
RequestedScrollPosition,
#if ENABLE(CSS_SCROLL_SNAP)
HorizontalSnapOffsets,
VerticalSnapOffsets,
HorizontalSnapOffsetRanges,
VerticalSnapOffsetRanges,
CurrentHorizontalSnapOffsetIndex,
CurrentVerticalSnapOffsetIndex,
#endif
ExpectsWheelEventTestTrigger,
ScrolledContentsLayer,
NumScrollingStateNodeBits // This must remain at the last position.
};
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&);
#if ENABLE(CSS_SCROLL_SNAP)
const Vector<float>& horizontalSnapOffsets() const { return m_snapOffsetsInfo.horizontalSnapOffsets; }
WEBCORE_EXPORT void setHorizontalSnapOffsets(const Vector<float>&);
const Vector<float>& verticalSnapOffsets() const { return m_snapOffsetsInfo.verticalSnapOffsets; }
WEBCORE_EXPORT void setVerticalSnapOffsets(const Vector<float>&);
const Vector<ScrollOffsetRange<float>>& horizontalSnapOffsetRanges() const { return m_snapOffsetsInfo.horizontalSnapOffsetRanges; }
WEBCORE_EXPORT void setHorizontalSnapOffsetRanges(const Vector<ScrollOffsetRange<float>>&);
const Vector<ScrollOffsetRange<float>>& verticalSnapOffsetRanges() const { return m_snapOffsetsInfo.verticalSnapOffsetRanges; }
WEBCORE_EXPORT void setVerticalSnapOffsetRanges(const Vector<ScrollOffsetRange<float>>&);
unsigned currentHorizontalSnapPointIndex() const { return m_currentHorizontalSnapPointIndex; }
WEBCORE_EXPORT void setCurrentHorizontalSnapPointIndex(unsigned);
unsigned currentVerticalSnapPointIndex() const { return m_currentVerticalSnapPointIndex; }
WEBCORE_EXPORT void setCurrentVerticalSnapPointIndex(unsigned);
#endif
const ScrollableAreaParameters& scrollableAreaParameters() const { return m_scrollableAreaParameters; }
WEBCORE_EXPORT void setScrollableAreaParameters(const ScrollableAreaParameters& params);
const FloatPoint& requestedScrollPosition() const { return m_requestedScrollPosition; }
bool requestedScrollPositionRepresentsProgrammaticScroll() const { return m_requestedScrollPositionRepresentsProgrammaticScroll; }
WEBCORE_EXPORT void setRequestedScrollPosition(const FloatPoint&, bool representsProgrammaticScroll);
bool expectsWheelEventTestTrigger() const { return m_expectsWheelEventTestTrigger; }
WEBCORE_EXPORT void setExpectsWheelEventTestTrigger(bool);
// This is a layer with the contents that move.
const LayerRepresentation& scrolledContentsLayer() const { return m_scrolledContentsLayer; }
WEBCORE_EXPORT void setScrolledContentsLayer(const LayerRepresentation&);
protected:
ScrollingStateScrollingNode(ScrollingStateTree&, ScrollingNodeType, ScrollingNodeID);
ScrollingStateScrollingNode(const ScrollingStateScrollingNode&, ScrollingStateTree&);
void dumpProperties(WTF::TextStream&, ScrollingStateTreeAsTextBehavior) const override;
private:
FloatSize m_scrollableAreaSize;
FloatSize m_totalContentsSize;
FloatSize m_reachableContentsSize;
FloatPoint m_scrollPosition;
FloatPoint m_requestedScrollPosition;
IntPoint m_scrollOrigin;
#if ENABLE(CSS_SCROLL_SNAP)
ScrollSnapOffsetsInfo<float> m_snapOffsetsInfo;
unsigned m_currentHorizontalSnapPointIndex { 0 };
unsigned m_currentVerticalSnapPointIndex { 0 };
#endif
ScrollableAreaParameters m_scrollableAreaParameters;
LayerRepresentation m_scrolledContentsLayer;
bool m_requestedScrollPositionRepresentsProgrammaticScroll { false };
bool m_expectsWheelEventTestTrigger { false };
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_SCROLLING_STATE_NODE(ScrollingStateScrollingNode, isScrollingNode())
#endif // ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS)
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