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/*
* Copyright (C) 2014 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.
*/
#ifndef ScrollingStateFrameScrollingNode_h
#define ScrollingStateFrameScrollingNode_h
#if ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS)
#include "Region.h"
#include "ScrollTypes.h"
#include "ScrollbarThemeComposite.h"
#include "ScrollingCoordinator.h"
#include "ScrollingStateScrollingNode.h"
namespace WebCore {
class Scrollbar;
class ScrollingStateFrameScrollingNode final : public ScrollingStateScrollingNode {
public:
static PassRefPtr<ScrollingStateFrameScrollingNode> create(ScrollingStateTree&, ScrollingNodeID);
virtual PassRefPtr<ScrollingStateNode> clone(ScrollingStateTree&);
virtual ~ScrollingStateFrameScrollingNode();
enum ChangedProperty {
FrameScaleFactor = NumScrollingStateNodeBits,
NonFastScrollableRegion,
WheelEventHandlerCount,
ReasonsForSynchronousScrolling,
ScrolledContentsLayer,
CounterScrollingLayer,
InsetClipLayer,
ContentShadowLayer,
HeaderHeight,
FooterHeight,
HeaderLayer,
FooterLayer,
PainterForScrollbar,
BehaviorForFixedElements,
TopContentInset
};
float frameScaleFactor() const { return m_frameScaleFactor; }
WEBCORE_EXPORT void setFrameScaleFactor(float);
const Region& nonFastScrollableRegion() const { return m_nonFastScrollableRegion; }
WEBCORE_EXPORT void setNonFastScrollableRegion(const Region&);
unsigned wheelEventHandlerCount() const { return m_wheelEventHandlerCount; }
WEBCORE_EXPORT void setWheelEventHandlerCount(unsigned);
SynchronousScrollingReasons synchronousScrollingReasons() const { return m_synchronousScrollingReasons; }
WEBCORE_EXPORT void setSynchronousScrollingReasons(SynchronousScrollingReasons);
ScrollBehaviorForFixedElements scrollBehaviorForFixedElements() const { return m_behaviorForFixed; }
WEBCORE_EXPORT void setScrollBehaviorForFixedElements(ScrollBehaviorForFixedElements);
int headerHeight() const { return m_headerHeight; }
WEBCORE_EXPORT void setHeaderHeight(int);
int footerHeight() const { return m_footerHeight; }
WEBCORE_EXPORT void setFooterHeight(int);
float topContentInset() const { return m_topContentInset; }
WEBCORE_EXPORT void setTopContentInset(float);
const LayerRepresentation& scrolledContentsLayer() const { return m_scrolledContentsLayer; }
WEBCORE_EXPORT void setScrolledContentsLayer(const LayerRepresentation&);
// This is a layer moved in the opposite direction to scrolling, for example for background-attachment:fixed
const LayerRepresentation& counterScrollingLayer() const { return m_counterScrollingLayer; }
WEBCORE_EXPORT void setCounterScrollingLayer(const LayerRepresentation&);
// This is a clipping layer that will scroll with the page for all y-delta scroll values between 0
// and topContentInset(). Once the y-deltas get beyond the content inset point, this layer no longer
// needs to move. If the topContentInset() is 0, this layer does not need to move at all. This is
// only used on the Mac.
const LayerRepresentation& insetClipLayer() const { return m_insetClipLayer; }
WEBCORE_EXPORT void setInsetClipLayer(const LayerRepresentation&);
const LayerRepresentation& contentShadowLayer() const { return m_contentShadowLayer; }
WEBCORE_EXPORT void setContentShadowLayer(const LayerRepresentation&);
// The header and footer layers scroll vertically with the page, they should remain fixed when scrolling horizontally.
const LayerRepresentation& headerLayer() const { return m_headerLayer; }
WEBCORE_EXPORT void setHeaderLayer(const LayerRepresentation&);
// The header and footer layers scroll vertically with the page, they should remain fixed when scrolling horizontally.
const LayerRepresentation& footerLayer() const { return m_footerLayer; }
WEBCORE_EXPORT void setFooterLayer(const LayerRepresentation&);
#if PLATFORM(MAC)
ScrollbarPainter verticalScrollbarPainter() const { return m_verticalScrollbarPainter.get(); }
ScrollbarPainter horizontalScrollbarPainter() const { return m_horizontalScrollbarPainter.get(); }
#endif
void setScrollbarPaintersFromScrollbars(Scrollbar* verticalScrollbar, Scrollbar* horizontalScrollbar);
virtual void dumpProperties(TextStream&, int indent) const override;
private:
ScrollingStateFrameScrollingNode(ScrollingStateTree&, ScrollingNodeID);
ScrollingStateFrameScrollingNode(const ScrollingStateFrameScrollingNode&, ScrollingStateTree&);
LayerRepresentation m_counterScrollingLayer;
LayerRepresentation m_insetClipLayer;
LayerRepresentation m_scrolledContentsLayer;
LayerRepresentation m_contentShadowLayer;
LayerRepresentation m_headerLayer;
LayerRepresentation m_footerLayer;
#if PLATFORM(MAC)
RetainPtr<ScrollbarPainter> m_verticalScrollbarPainter;
RetainPtr<ScrollbarPainter> m_horizontalScrollbarPainter;
#endif
Region m_nonFastScrollableRegion;
float m_frameScaleFactor;
unsigned m_wheelEventHandlerCount;
SynchronousScrollingReasons m_synchronousScrollingReasons;
ScrollBehaviorForFixedElements m_behaviorForFixed;
int m_headerHeight;
int m_footerHeight;
FloatPoint m_requestedScrollPosition;
bool m_requestedScrollPositionRepresentsProgrammaticScroll;
float m_topContentInset;
};
SCROLLING_STATE_NODE_TYPE_CASTS(ScrollingStateFrameScrollingNode, isFrameScrollingNode());
} // namespace WebCore
#endif // ENABLE(ASYNC_SCROLLING) || USE(COORDINATED_GRAPHICS)
#endif // ScrollingStateFrameScrollingNode_h
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