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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/168655">168655</a></dd>
<dt>Author</dt> <dd>bdakin@apple.com</dd>
<dt>Date</dt> <dd>2014-05-12 16:21:51 -0700 (Mon, 12 May 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Content shadow layer needs to move in sync with the content layer
https://bugs.webkit.org/show_bug.cgi?id=132841
-and corresponding-
<rdar://problem/16641115>
Reviewed by Simon Fraser.
Now that the root content layer moves a little bit (for y scroll positions between
0 and topContentInset), the shadow layer needs to move along with it since the
shadow layer should always have the same position as the root content layer.
Set the root state node’s shadow layer, and update the position whenever the root
content layer’s position is updated.
* page/scrolling/AsyncScrollingCoordinator.cpp:
(WebCore::AsyncScrollingCoordinator::frameViewRootLayerDidChange):
(WebCore::AsyncScrollingCoordinator::updateScrollPositionAfterAsyncScroll):
Fetch the compositor’s layerForContentShadow().
* page/scrolling/ScrollingCoordinator.cpp:
(WebCore::ScrollingCoordinator::contentShadowLayerForFrameView):
* page/scrolling/ScrollingCoordinator.h:
Hook up the contentShadowLayer in the state node.
* page/scrolling/ScrollingStateScrollingNode.cpp:
(WebCore::ScrollingStateScrollingNode::ScrollingStateScrollingNode):
(WebCore::ScrollingStateScrollingNode::setContentShadowLayer):
Hook it up in the ScrollingTreeNode as well. Move the layer whenever the m
_scrolledContentsLayer is moved.
* page/scrolling/ScrollingStateScrollingNode.h:
* page/scrolling/mac/ScrollingTreeScrollingNodeMac.h:
* page/scrolling/mac/ScrollingTreeScrollingNodeMac.mm:
(WebCore::ScrollingTreeScrollingNodeMac::updateBeforeChildren):
(WebCore::ScrollingTreeScrollingNodeMac::setScrollLayerPosition):
The shadow layer needs an anchor point now that we are moving it around.
* rendering/RenderLayerCompositor.cpp:
(WebCore::RenderLayerCompositor::updateOverflowControlsLayers):</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorepagescrollingAsyncScrollingCoordinatorcpp">trunk/Source/WebCore/page/scrolling/AsyncScrollingCoordinator.cpp</a></li>
<li><a href="#trunkSourceWebCorepagescrollingScrollingCoordinatorcpp">trunk/Source/WebCore/page/scrolling/ScrollingCoordinator.cpp</a></li>
<li><a href="#trunkSourceWebCorepagescrollingScrollingCoordinatorh">trunk/Source/WebCore/page/scrolling/ScrollingCoordinator.h</a></li>
<li><a href="#trunkSourceWebCorepagescrollingScrollingStateScrollingNodecpp">trunk/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.cpp</a></li>
<li><a href="#trunkSourceWebCorepagescrollingScrollingStateScrollingNodeh">trunk/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.h</a></li>
<li><a href="#trunkSourceWebCorepagescrollingmacScrollingTreeScrollingNodeMach">trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeScrollingNodeMac.h</a></li>
<li><a href="#trunkSourceWebCorepagescrollingmacScrollingTreeScrollingNodeMacmm">trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeScrollingNodeMac.mm</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderLayerCompositorcpp">trunk/Source/WebCore/rendering/RenderLayerCompositor.cpp</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (168654 => 168655)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2014-05-12 23:17:46 UTC (rev 168654)
+++ trunk/Source/WebCore/ChangeLog 2014-05-12 23:21:51 UTC (rev 168655)
</span><span class="lines">@@ -1,3 +1,44 @@
</span><ins>+2014-05-12 Beth Dakin <bdakin@apple.com>
+
+ Content shadow layer needs to move in sync with the content layer
+ https://bugs.webkit.org/show_bug.cgi?id=132841
+ -and corresponding-
+ <rdar://problem/16641115>
+
+ Reviewed by Simon Fraser.
+
+ Now that the root content layer moves a little bit (for y scroll positions between
+ 0 and topContentInset), the shadow layer needs to move along with it since the
+ shadow layer should always have the same position as the root content layer.
+
+ Set the root state node’s shadow layer, and update the position whenever the root
+ content layer’s position is updated.
+ * page/scrolling/AsyncScrollingCoordinator.cpp:
+ (WebCore::AsyncScrollingCoordinator::frameViewRootLayerDidChange):
+ (WebCore::AsyncScrollingCoordinator::updateScrollPositionAfterAsyncScroll):
+
+ Fetch the compositor’s layerForContentShadow().
+ * page/scrolling/ScrollingCoordinator.cpp:
+ (WebCore::ScrollingCoordinator::contentShadowLayerForFrameView):
+ * page/scrolling/ScrollingCoordinator.h:
+
+ Hook up the contentShadowLayer in the state node.
+ * page/scrolling/ScrollingStateScrollingNode.cpp:
+ (WebCore::ScrollingStateScrollingNode::ScrollingStateScrollingNode):
+ (WebCore::ScrollingStateScrollingNode::setContentShadowLayer):
+
+ Hook it up in the ScrollingTreeNode as well. Move the layer whenever the m
+ _scrolledContentsLayer is moved.
+ * page/scrolling/ScrollingStateScrollingNode.h:
+ * page/scrolling/mac/ScrollingTreeScrollingNodeMac.h:
+ * page/scrolling/mac/ScrollingTreeScrollingNodeMac.mm:
+ (WebCore::ScrollingTreeScrollingNodeMac::updateBeforeChildren):
+ (WebCore::ScrollingTreeScrollingNodeMac::setScrollLayerPosition):
+
+ The shadow layer needs an anchor point now that we are moving it around.
+ * rendering/RenderLayerCompositor.cpp:
+ (WebCore::RenderLayerCompositor::updateOverflowControlsLayers):
+
</ins><span class="cx"> 2014-05-12 Dirk Schulze <krit@webkit.org>
</span><span class="cx">
</span><span class="cx"> <svg> with opacity and compositing double-applies its opacity
</span></span></pre></div>
<a id="trunkSourceWebCorepagescrollingAsyncScrollingCoordinatorcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/page/scrolling/AsyncScrollingCoordinator.cpp (168654 => 168655)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/page/scrolling/AsyncScrollingCoordinator.cpp 2014-05-12 23:17:46 UTC (rev 168654)
+++ trunk/Source/WebCore/page/scrolling/AsyncScrollingCoordinator.cpp 2014-05-12 23:21:51 UTC (rev 168655)
</span><span class="lines">@@ -135,6 +135,7 @@
</span><span class="cx"> node->setLayer(scrollLayerForFrameView(frameView));
</span><span class="cx"> node->setCounterScrollingLayer(counterScrollingLayerForFrameView(frameView));
</span><span class="cx"> node->setInsetClipLayer(insetClipLayerForFrameView(frameView));
</span><ins>+ node->setContentShadowLayer(contentShadowLayerForFrameView(frameView));
</ins><span class="cx"> node->setHeaderLayer(headerLayerForFrameView(frameView));
</span><span class="cx"> node->setFooterLayer(footerLayerForFrameView(frameView));
</span><span class="cx"> node->setScrollBehaviorForFixedElements(frameView->scrollBehaviorForFixedElements());
</span><span class="lines">@@ -215,6 +216,7 @@
</span><span class="cx"> if (GraphicsLayer* scrollLayer = scrollLayerForFrameView(frameView)) {
</span><span class="cx"> GraphicsLayer* counterScrollingLayer = counterScrollingLayerForFrameView(frameView);
</span><span class="cx"> GraphicsLayer* insetClipLayer = insetClipLayerForFrameView(frameView);
</span><ins>+ GraphicsLayer* contentShadowLayer = contentShadowLayerForFrameView(frameView);
</ins><span class="cx"> GraphicsLayer* scrolledContentsLayer = rootContentLayerForFrameView(frameView);
</span><span class="cx"> GraphicsLayer* headerLayer = headerLayerForFrameView(frameView);
</span><span class="cx"> GraphicsLayer* footerLayer = footerLayerForFrameView(frameView);
</span><span class="lines">@@ -234,6 +236,8 @@
</span><span class="cx"> counterScrollingLayer->setPosition(toLayoutPoint(scrollOffsetForFixed));
</span><span class="cx"> if (insetClipLayer)
</span><span class="cx"> insetClipLayer->setPosition(positionForInsetClipLayer);
</span><ins>+ if (contentShadowLayer)
+ contentShadowLayer->setPosition(positionForContentsLayer);
</ins><span class="cx"> if (scrolledContentsLayer)
</span><span class="cx"> scrolledContentsLayer->setPosition(positionForContentsLayer);
</span><span class="cx"> if (headerLayer)
</span><span class="lines">@@ -246,6 +250,8 @@
</span><span class="cx"> counterScrollingLayer->syncPosition(toLayoutPoint(scrollOffsetForFixed));
</span><span class="cx"> if (insetClipLayer)
</span><span class="cx"> insetClipLayer->syncPosition(positionForInsetClipLayer);
</span><ins>+ if (contentShadowLayer)
+ contentShadowLayer->syncPosition(positionForContentsLayer);
</ins><span class="cx"> if (scrolledContentsLayer)
</span><span class="cx"> scrolledContentsLayer->syncPosition(positionForContentsLayer);
</span><span class="cx"> if (headerLayer)
</span></span></pre></div>
<a id="trunkSourceWebCorepagescrollingScrollingCoordinatorcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/page/scrolling/ScrollingCoordinator.cpp (168654 => 168655)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/page/scrolling/ScrollingCoordinator.cpp 2014-05-12 23:17:46 UTC (rev 168654)
+++ trunk/Source/WebCore/page/scrolling/ScrollingCoordinator.cpp 2014-05-12 23:21:51 UTC (rev 168655)
</span><span class="lines">@@ -255,6 +255,13 @@
</span><span class="cx"> return nullptr;
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+GraphicsLayer* ScrollingCoordinator::contentShadowLayerForFrameView(FrameView* frameView)
+{
+ if (RenderView* renderView = frameView->frame().contentRenderer())
+ return renderView->compositor().layerForContentShadow();
+ return nullptr;
+}
+
</ins><span class="cx"> GraphicsLayer* ScrollingCoordinator::rootContentLayerForFrameView(FrameView* frameView)
</span><span class="cx"> {
</span><span class="cx"> if (RenderView* renderView = frameView->frame().contentRenderer())
</span></span></pre></div>
<a id="trunkSourceWebCorepagescrollingScrollingCoordinatorh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/page/scrolling/ScrollingCoordinator.h (168654 => 168655)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/page/scrolling/ScrollingCoordinator.h 2014-05-12 23:17:46 UTC (rev 168654)
+++ trunk/Source/WebCore/page/scrolling/ScrollingCoordinator.h 2014-05-12 23:21:51 UTC (rev 168655)
</span><span class="lines">@@ -205,6 +205,7 @@
</span><span class="cx"> GraphicsLayer* counterScrollingLayerForFrameView(FrameView*);
</span><span class="cx"> GraphicsLayer* insetClipLayerForFrameView(FrameView*);
</span><span class="cx"> GraphicsLayer* rootContentLayerForFrameView(FrameView*);
</span><ins>+ GraphicsLayer* contentShadowLayerForFrameView(FrameView*);
</ins><span class="cx"> GraphicsLayer* headerLayerForFrameView(FrameView*);
</span><span class="cx"> GraphicsLayer* footerLayerForFrameView(FrameView*);
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceWebCorepagescrollingScrollingStateScrollingNodecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.cpp (168654 => 168655)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.cpp 2014-05-12 23:17:46 UTC (rev 168654)
+++ trunk/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.cpp 2014-05-12 23:21:51 UTC (rev 168655)
</span><span class="lines">@@ -87,6 +87,9 @@
</span><span class="cx"> if (hasChangedProperty(InsetClipLayer))
</span><span class="cx"> setInsetClipLayer(stateNode.insetClipLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
</span><span class="cx">
</span><ins>+ if (hasChangedProperty(ContentShadowLayer))
+ setContentShadowLayer(stateNode.contentShadowLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
+
</ins><span class="cx"> if (hasChangedProperty(HeaderLayer))
</span><span class="cx"> setHeaderLayer(stateNode.headerLayer().toRepresentation(adoptiveTree.preferredLayerRepresentation()));
</span><span class="cx">
</span><span class="lines">@@ -255,6 +258,15 @@
</span><span class="cx"> setPropertyChanged(InsetClipLayer);
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+void ScrollingStateScrollingNode::setContentShadowLayer(const LayerRepresentation& layerRepresentation)
+{
+ if (layerRepresentation == m_contentShadowLayer)
+ return;
+
+ m_contentShadowLayer = layerRepresentation;
+ setPropertyChanged(ContentShadowLayer);
+}
+
</ins><span class="cx"> void ScrollingStateScrollingNode::setHeaderLayer(const LayerRepresentation& layerRepresentation)
</span><span class="cx"> {
</span><span class="cx"> if (layerRepresentation == m_headerLayer)
</span></span></pre></div>
<a id="trunkSourceWebCorepagescrollingScrollingStateScrollingNodeh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.h (168654 => 168655)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.h 2014-05-12 23:17:46 UTC (rev 168654)
+++ trunk/Source/WebCore/page/scrolling/ScrollingStateScrollingNode.h 2014-05-12 23:21:51 UTC (rev 168655)
</span><span class="lines">@@ -63,6 +63,7 @@
</span><span class="cx"> ScrolledContentsLayer,
</span><span class="cx"> CounterScrollingLayer,
</span><span class="cx"> InsetClipLayer,
</span><ins>+ ContentShadowLayer,
</ins><span class="cx"> HeaderHeight,
</span><span class="cx"> FooterHeight,
</span><span class="cx"> HeaderLayer,
</span><span class="lines">@@ -130,6 +131,9 @@
</span><span class="cx"> const LayerRepresentation& insetClipLayer() const { return m_insetClipLayer; }
</span><span class="cx"> void setInsetClipLayer(const LayerRepresentation&);
</span><span class="cx">
</span><ins>+ const LayerRepresentation& contentShadowLayer() const { return m_contentShadowLayer; }
+ void setContentShadowLayer(const LayerRepresentation&);
+
</ins><span class="cx"> // The header and footer layers scroll vertically with the page, they should remain fixed when scrolling horizontally.
</span><span class="cx"> const LayerRepresentation& headerLayer() const { return m_headerLayer; }
</span><span class="cx"> void setHeaderLayer(const LayerRepresentation&);
</span><span class="lines">@@ -153,6 +157,7 @@
</span><span class="cx"> LayerRepresentation m_scrolledContentsLayer;
</span><span class="cx"> LayerRepresentation m_counterScrollingLayer;
</span><span class="cx"> LayerRepresentation m_insetClipLayer;
</span><ins>+ LayerRepresentation m_contentShadowLayer;
</ins><span class="cx"> LayerRepresentation m_headerLayer;
</span><span class="cx"> LayerRepresentation m_footerLayer;
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceWebCorepagescrollingmacScrollingTreeScrollingNodeMach"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeScrollingNodeMac.h (168654 => 168655)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeScrollingNodeMac.h 2014-05-12 23:17:46 UTC (rev 168654)
+++ trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeScrollingNodeMac.h 2014-05-12 23:21:51 UTC (rev 168655)
</span><span class="lines">@@ -90,6 +90,7 @@
</span><span class="cx"> RetainPtr<CALayer> m_scrolledContentsLayer;
</span><span class="cx"> RetainPtr<CALayer> m_counterScrollingLayer;
</span><span class="cx"> RetainPtr<CALayer> m_insetClipLayer;
</span><ins>+ RetainPtr<CALayer> m_contentShadowLayer;
</ins><span class="cx"> RetainPtr<CALayer> m_headerLayer;
</span><span class="cx"> RetainPtr<CALayer> m_footerLayer;
</span><span class="cx"> RetainPtr<ScrollbarPainter> m_verticalScrollbarPainter;
</span></span></pre></div>
<a id="trunkSourceWebCorepagescrollingmacScrollingTreeScrollingNodeMacmm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeScrollingNodeMac.mm (168654 => 168655)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeScrollingNodeMac.mm 2014-05-12 23:17:46 UTC (rev 168654)
+++ trunk/Source/WebCore/page/scrolling/mac/ScrollingTreeScrollingNodeMac.mm 2014-05-12 23:21:51 UTC (rev 168655)
</span><span class="lines">@@ -87,6 +87,9 @@
</span><span class="cx"> if (scrollingStateNode.hasChangedProperty(ScrollingStateScrollingNode::InsetClipLayer))
</span><span class="cx"> m_insetClipLayer = scrollingStateNode.insetClipLayer();
</span><span class="cx">
</span><ins>+ if (scrollingStateNode.hasChangedProperty(ScrollingStateScrollingNode::ContentShadowLayer))
+ m_contentShadowLayer = scrollingStateNode.contentShadowLayer();
+
</ins><span class="cx"> if (scrollingStateNode.hasChangedProperty(ScrollingStateScrollingNode::HeaderLayer))
</span><span class="cx"> m_headerLayer = scrollingStateNode.headerLayer();
</span><span class="cx">
</span><span class="lines">@@ -360,6 +363,8 @@
</span><span class="cx"> m_insetClipLayer.get().position = FloatPoint(0, FrameView::yPositionForInsetClipLayer(position, topContentInset));
</span><span class="cx"> m_scrolledContentsLayer.get().position = FloatPoint(m_scrolledContentsLayer.get().position.x,
</span><span class="cx"> FrameView::yPositionForRootContentLayer(position, topContentInset, headerHeight()));
</span><ins>+ if (m_contentShadowLayer)
+ m_contentShadowLayer.get().position = m_scrolledContentsLayer.get().position;
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> if (m_headerLayer || m_footerLayer) {
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderLayerCompositorcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderLayerCompositor.cpp (168654 => 168655)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderLayerCompositor.cpp 2014-05-12 23:17:46 UTC (rev 168654)
+++ trunk/Source/WebCore/rendering/RenderLayerCompositor.cpp 2014-05-12 23:21:51 UTC (rev 168655)
</span><span class="lines">@@ -3102,6 +3102,7 @@
</span><span class="cx"> #endif
</span><span class="cx"> m_contentShadowLayer->setSize(m_rootContentLayer->size());
</span><span class="cx"> m_contentShadowLayer->setPosition(m_rootContentLayer->position());
</span><ins>+ m_contentShadowLayer->setAnchorPoint(FloatPoint3D());
</ins><span class="cx"> m_contentShadowLayer->setCustomAppearance(GraphicsLayer::ScrollingShadow);
</span><span class="cx">
</span><span class="cx"> m_scrollLayer->addChildBelow(m_contentShadowLayer.get(), m_rootContentLayer.get());
</span></span></pre>
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