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authorLorry Tar Creator <lorry-tar-importer@lorry>2016-04-10 09:28:39 +0000
committerLorry Tar Creator <lorry-tar-importer@lorry>2016-04-10 09:28:39 +0000
commit32761a6cee1d0dee366b885b7b9c777e67885688 (patch)
treed6bec92bebfb216f4126356e55518842c2f476a1 /Source/WebCore/page/scrolling/ScrollingTreeScrollingNode.cpp
parenta4e969f4965059196ca948db781e52f7cfebf19e (diff)
downloadWebKitGtk-tarball-32761a6cee1d0dee366b885b7b9c777e67885688.tar.gz
webkitgtk-2.4.11webkitgtk-2.4.11
Diffstat (limited to 'Source/WebCore/page/scrolling/ScrollingTreeScrollingNode.cpp')
-rw-r--r--Source/WebCore/page/scrolling/ScrollingTreeScrollingNode.cpp130
1 files changed, 0 insertions, 130 deletions
diff --git a/Source/WebCore/page/scrolling/ScrollingTreeScrollingNode.cpp b/Source/WebCore/page/scrolling/ScrollingTreeScrollingNode.cpp
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-/*
- * Copyright (C) 2012 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.
- */
-
-#include "config.h"
-#include "ScrollingTreeScrollingNode.h"
-
-#if ENABLE(ASYNC_SCROLLING)
-
-#include "ScrollingStateTree.h"
-#include "ScrollingTree.h"
-
-namespace WebCore {
-
-ScrollingTreeScrollingNode::ScrollingTreeScrollingNode(ScrollingTree& scrollingTree, ScrollingNodeType nodeType, ScrollingNodeID nodeID)
- : ScrollingTreeNode(scrollingTree, nodeType, nodeID)
-{
-}
-
-ScrollingTreeScrollingNode::~ScrollingTreeScrollingNode()
-{
-}
-
-void ScrollingTreeScrollingNode::updateBeforeChildren(const ScrollingStateNode& stateNode)
-{
- const ScrollingStateScrollingNode& state = downcast<ScrollingStateScrollingNode>(stateNode);
-
- if (state.hasChangedProperty(ScrollingStateScrollingNode::ScrollableAreaSize))
- m_scrollableAreaSize = state.scrollableAreaSize();
-
- if (state.hasChangedProperty(ScrollingStateScrollingNode::TotalContentsSize)) {
- if (scrollingTree().isRubberBandInProgress())
- m_totalContentsSizeForRubberBand = m_totalContentsSize;
- else
- m_totalContentsSizeForRubberBand = state.totalContentsSize();
-
- m_totalContentsSize = state.totalContentsSize();
- }
-
- if (state.hasChangedProperty(ScrollingStateScrollingNode::ReachableContentsSize))
- m_reachableContentsSize = state.reachableContentsSize();
-
- if (state.hasChangedProperty(ScrollingStateScrollingNode::ScrollPosition))
- m_lastCommittedScrollPosition = state.scrollPosition();
-
- if (state.hasChangedProperty(ScrollingStateScrollingNode::ScrollOrigin))
- m_scrollOrigin = state.scrollOrigin();
-
-#if ENABLE(CSS_SCROLL_SNAP)
- if (state.hasChangedProperty(ScrollingStateScrollingNode::HorizontalSnapOffsets))
- m_horizontalSnapOffsets = state.horizontalSnapOffsets();
-
- if (state.hasChangedProperty(ScrollingStateScrollingNode::VerticalSnapOffsets))
- m_verticalSnapOffsets = state.verticalSnapOffsets();
-
- if (state.hasChangedProperty(ScrollingStateScrollingNode::CurrentHorizontalSnapOffsetIndex))
- m_currentHorizontalSnapPointIndex = state.currentHorizontalSnapPointIndex();
-
- if (state.hasChangedProperty(ScrollingStateScrollingNode::CurrentVerticalSnapOffsetIndex))
- m_currentVerticalSnapPointIndex = state.currentVerticalSnapPointIndex();
-#endif
-
- if (state.hasChangedProperty(ScrollingStateScrollingNode::ScrollableAreaParams))
- m_scrollableAreaParameters = state.scrollableAreaParameters();
-}
-
-void ScrollingTreeScrollingNode::updateAfterChildren(const ScrollingStateNode& stateNode)
-{
- const ScrollingStateScrollingNode& scrollingStateNode = downcast<ScrollingStateScrollingNode>(stateNode);
- if (scrollingStateNode.hasChangedProperty(ScrollingStateScrollingNode::RequestedScrollPosition))
- scrollingTree().scrollingTreeNodeRequestsScroll(scrollingNodeID(), scrollingStateNode.requestedScrollPosition(), scrollingStateNode.requestedScrollPositionRepresentsProgrammaticScroll());
-}
-
-void ScrollingTreeScrollingNode::updateLayersAfterAncestorChange(const ScrollingTreeNode& changedNode, const FloatRect& fixedPositionRect, const FloatSize& cumulativeDelta)
-{
- if (!m_children)
- return;
-
- for (auto& child : *m_children)
- child->updateLayersAfterAncestorChange(changedNode, fixedPositionRect, cumulativeDelta);
-}
-
-void ScrollingTreeScrollingNode::setScrollPosition(const FloatPoint& scrollPosition)
-{
- FloatPoint newScrollPosition = scrollPosition.constrainedBetween(minimumScrollPosition(), maximumScrollPosition());
- setScrollPositionWithoutContentEdgeConstraints(newScrollPosition);
-}
-
-void ScrollingTreeScrollingNode::setScrollPositionWithoutContentEdgeConstraints(const FloatPoint& scrollPosition)
-{
- setScrollLayerPosition(scrollPosition);
- scrollingTree().scrollingTreeNodeDidScroll(scrollingNodeID(), scrollPosition);
-}
-
-FloatPoint ScrollingTreeScrollingNode::minimumScrollPosition() const
-{
- return FloatPoint();
-}
-
-FloatPoint ScrollingTreeScrollingNode::maximumScrollPosition() const
-{
- FloatPoint contentSizePoint(totalContentsSize());
- return FloatPoint(contentSizePoint - scrollableAreaSize()).expandedTo(FloatPoint());
-}
-
-
-} // namespace WebCore
-
-#endif // ENABLE(ASYNC_SCROLLING)