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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/211521">211521</a></dd>
<dt>Author</dt> <dd>matthew_hanson@apple.com</dd>
<dt>Date</dt> <dd>2017-02-01 13:26:51 -0800 (Wed, 01 Feb 2017)</dd>
</dl>
<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/211387">r211387</a>. rdar://problem/29500273</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari603branchLayoutTestsChangeLog">branches/safari-603-branch/LayoutTests/ChangeLog</a></li>
<li><a href="#branchessafari603branchSourceWebCoreChangeLog">branches/safari-603-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari603branchSourceWebCorerenderingRenderLayerBackingcpp">branches/safari-603-branch/Source/WebCore/rendering/RenderLayerBacking.cpp</a></li>
<li><a href="#branchessafari603branchSourceWebCorerenderingRenderLayerCompositorcpp">branches/safari-603-branch/Source/WebCore/rendering/RenderLayerCompositor.cpp</a></li>
<li><a href="#branchessafari603branchSourceWebKit2ChangeLog">branches/safari-603-branch/Source/WebKit2/ChangeLog</a></li>
<li><a href="#branchessafari603branchSourceWebKit2UIProcessiosRemoteScrollingCoordinatorProxyIOSmm">branches/safari-603-branch/Source/WebKit2/UIProcess/ios/RemoteScrollingCoordinatorProxyIOS.mm</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#branchessafari603branchLayoutTestscompositingscrollingfixedinsidescrollexpectedhtml">branches/safari-603-branch/LayoutTests/compositing/scrolling/fixed-inside-scroll-expected.html</a></li>
<li><a href="#branchessafari603branchLayoutTestscompositingscrollingfixedinsidescrollhtml">branches/safari-603-branch/LayoutTests/compositing/scrolling/fixed-inside-scroll.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari603branchLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-603-branch/LayoutTests/ChangeLog (211520 => 211521)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/LayoutTests/ChangeLog        2017-02-01 21:26:47 UTC (rev 211520)
+++ branches/safari-603-branch/LayoutTests/ChangeLog        2017-02-01 21:26:51 UTC (rev 211521)
</span><span class="lines">@@ -1,5 +1,19 @@
</span><span class="cx"> 2017-01-31 Matthew Hanson <matthew_hanson@apple.com>
</span><span class="cx">
</span><ins>+ Merge r211387. rdar://problem/29500273
+
+ 2017-01-30 Simon Fraser <simon.fraser@apple.com>
+
+ [iOS] position:fixed inside touch-scrollable overflow is mispositioned
+ https://bugs.webkit.org/show_bug.cgi?id=167604
+
+ Reviewed by Zalan Bujtas.
+
+ * compositing/scrolling/fixed-inside-scroll-expected.html: Added.
+ * compositing/scrolling/fixed-inside-scroll.html: Added.
+
+2017-01-31 Matthew Hanson <matthew_hanson@apple.com>
+
</ins><span class="cx"> Merge r211385. rdar://problem/29738502
</span><span class="cx">
</span><span class="cx"> 2017-01-30 Matt Baker <mattbaker@apple.com>
</span></span></pre></div>
<a id="branchessafari603branchLayoutTestscompositingscrollingfixedinsidescrollexpectedhtml"></a>
<div class="addfile"><h4>Added: branches/safari-603-branch/LayoutTests/compositing/scrolling/fixed-inside-scroll-expected.html (0 => 211521)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/LayoutTests/compositing/scrolling/fixed-inside-scroll-expected.html         (rev 0)
+++ branches/safari-603-branch/LayoutTests/compositing/scrolling/fixed-inside-scroll-expected.html        2017-02-01 21:26:51 UTC (rev 211521)
</span><span class="lines">@@ -0,0 +1,52 @@
</span><ins>+<!DOCTYPE html>
+
+<html>
+<head>
+ <style>
+ html {
+ -webkit-overflow-scrolling: touch;
+ }
+
+ .scroller {
+ height: 500px;
+ width: 300px;
+ margin: 50px;
+ border: 25px solid gray;
+ padding: 10px;
+ overflow: scroll;
+ box-shadow: 0 0 30px black;
+ }
+
+ .contents {
+ width: 400px;
+ height: 2000px;
+ }
+
+ .fixed {
+ position: absolute;
+ background-color: green;
+ left: 70px;
+ top: 70px;
+ height: 200px;
+ width: 200px;
+ }
+
+ .indicator {
+ position: absolute;
+ left: 70px;
+ top: 70px;
+ height: 200px;
+ width: 200px;
+ background-color: red;
+ }
+ </style>
+</head>
+<body>
+ <div class="indicator"></div>
+ <div id="scroller" class="scroller">
+ <div class="contents">
+ <div class="fixed box"></div>
+ </div>
+ </div>
+</body>
+</html>
</ins></span></pre></div>
<a id="branchessafari603branchLayoutTestscompositingscrollingfixedinsidescrollhtml"></a>
<div class="addfile"><h4>Added: branches/safari-603-branch/LayoutTests/compositing/scrolling/fixed-inside-scroll.html (0 => 211521)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/LayoutTests/compositing/scrolling/fixed-inside-scroll.html         (rev 0)
+++ branches/safari-603-branch/LayoutTests/compositing/scrolling/fixed-inside-scroll.html        2017-02-01 21:26:51 UTC (rev 211521)
</span><span class="lines">@@ -0,0 +1,52 @@
</span><ins>+<!DOCTYPE html>
+
+<html>
+<head>
+ <style>
+ html {
+ -webkit-overflow-scrolling: touch;
+ }
+
+ .scroller {
+ height: 500px;
+ width: 300px;
+ margin: 50px;
+ border: 25px solid gray;
+ padding: 10px;
+ overflow: scroll;
+ box-shadow: 0 0 30px black;
+ }
+
+ .contents {
+ width: 400px;
+ height: 2000px;
+ }
+
+ .fixed {
+ position: fixed;
+ background-color: green;
+ left: 70px;
+ top: 70px;
+ height: 200px;
+ width: 200px;
+ }
+
+ .indicator {
+ position: absolute;
+ left: 70px;
+ top: 70px;
+ height: 200px;
+ width: 200px;
+ background-color: red;
+ }
+ </style>
+</head>
+<body>
+ <div class="indicator"></div>
+ <div id="scroller" class="scroller">
+ <div class="contents">
+ <div class="fixed box"></div>
+ </div>
+ </div>
+</body>
+</html>
</ins></span></pre></div>
<a id="branchessafari603branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-603-branch/Source/WebCore/ChangeLog (211520 => 211521)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/Source/WebCore/ChangeLog        2017-02-01 21:26:47 UTC (rev 211520)
+++ branches/safari-603-branch/Source/WebCore/ChangeLog        2017-02-01 21:26:51 UTC (rev 211521)
</span><span class="lines">@@ -1,5 +1,30 @@
</span><span class="cx"> 2017-01-31 Matthew Hanson <matthew_hanson@apple.com>
</span><span class="cx">
</span><ins>+ Merge r211387. rdar://problem/29500273
+
+ 2017-01-30 Simon Fraser <simon.fraser@apple.com>
+
+ [iOS] position:fixed inside touch-scrollable overflow is mispositioned
+ https://bugs.webkit.org/show_bug.cgi?id=167604
+ rdar://problem/29500273
+
+ Reviewed by Zalan Bujtas.
+
+ For layers inside touch-scrollable overflow, RenderLayerBacking::computeParentGraphicsLayerRect() needs
+ to account for the offset from the ancestor compositing layer's origin, to handle scrollable elements with
+ box-shadow, for example.
+
+ Also make the compositing log output a little easier to read.
+
+ Test: compositing/scrolling/fixed-inside-scroll.html
+
+ * rendering/RenderLayerBacking.cpp:
+ (WebCore::RenderLayerBacking::computeParentGraphicsLayerRect):
+ * rendering/RenderLayerCompositor.cpp:
+ (WebCore::RenderLayerCompositor::logLayerInfo):
+
+2017-01-31 Matthew Hanson <matthew_hanson@apple.com>
+
</ins><span class="cx"> Merge r211386. rdar://problem/30204866
</span><span class="cx">
</span><span class="cx"> 2017-01-30 Jer Noble <jer.noble@apple.com>
</span></span></pre></div>
<a id="branchessafari603branchSourceWebCorerenderingRenderLayerBackingcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-603-branch/Source/WebCore/rendering/RenderLayerBacking.cpp (211520 => 211521)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/Source/WebCore/rendering/RenderLayerBacking.cpp        2017-02-01 21:26:47 UTC (rev 211520)
+++ branches/safari-603-branch/Source/WebCore/rendering/RenderLayerBacking.cpp        2017-02-01 21:26:51 UTC (rev 211521)
</span><span class="lines">@@ -831,12 +831,11 @@
</span><span class="cx">
</span><span class="cx"> #if PLATFORM(IOS)
</span><span class="cx"> if (compositedAncestor->hasTouchScrollableOverflow()) {
</span><ins>+ LayoutRect ancestorCompositedBounds = ancestorBackingLayer->compositedBounds();
</ins><span class="cx"> auto& renderBox = downcast<RenderBox>(compositedAncestor->renderer());
</span><del>- LayoutRect paddingBox(renderBox.borderLeft(), renderBox.borderTop(),
- renderBox.width() - renderBox.borderLeft() - renderBox.borderRight(),
- renderBox.height() - renderBox.borderTop() - renderBox.borderBottom());
</del><ins>+ LayoutRect paddingBox(renderBox.borderLeft(), renderBox.borderTop(), renderBox.width() - renderBox.borderLeft() - renderBox.borderRight(), renderBox.height() - renderBox.borderTop() - renderBox.borderBottom());
</ins><span class="cx"> ScrollOffset scrollOffset = compositedAncestor->scrollOffset();
</span><del>- parentGraphicsLayerRect = LayoutRect((paddingBox.location() - toLayoutSize(scrollOffset)), paddingBox.size());
</del><ins>+ parentGraphicsLayerRect = LayoutRect((paddingBox.location() - toLayoutSize(ancestorCompositedBounds.location()) - toLayoutSize(scrollOffset)), paddingBox.size());
</ins><span class="cx"> }
</span><span class="cx"> #else
</span><span class="cx"> if (compositedAncestor->needsCompositedScrolling()) {
</span></span></pre></div>
<a id="branchessafari603branchSourceWebCorerenderingRenderLayerCompositorcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-603-branch/Source/WebCore/rendering/RenderLayerCompositor.cpp (211520 => 211521)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/Source/WebCore/rendering/RenderLayerCompositor.cpp        2017-02-01 21:26:47 UTC (rev 211520)
+++ branches/safari-603-branch/Source/WebCore/rendering/RenderLayerCompositor.cpp        2017-02-01 21:26:51 UTC (rev 211521)
</span><span class="lines">@@ -837,7 +837,7 @@
</span><span class="cx"> absoluteBounds.move(layer.offsetFromAncestor(m_renderView.layer()));
</span><span class="cx">
</span><span class="cx"> StringBuilder logString;
</span><del>- logString.append(String::format("%*p (%.6f,%.6f-%.6f,%.6f) %.2fKB", 12 + depth * 2, &layer,
</del><ins>+ logString.append(String::format("%*p (%.3f,%.3f-%.3f,%.3f) %.2fKB", 12 + depth * 2, &layer,
</ins><span class="cx"> absoluteBounds.x().toFloat(), absoluteBounds.y().toFloat(), absoluteBounds.maxX().toFloat(), absoluteBounds.maxY().toFloat(),
</span><span class="cx"> backing->backingStoreMemoryEstimate() / 1024));
</span><span class="cx">
</span></span></pre></div>
<a id="branchessafari603branchSourceWebKit2ChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-603-branch/Source/WebKit2/ChangeLog (211520 => 211521)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/Source/WebKit2/ChangeLog        2017-02-01 21:26:47 UTC (rev 211520)
+++ branches/safari-603-branch/Source/WebKit2/ChangeLog        2017-02-01 21:26:51 UTC (rev 211521)
</span><span class="lines">@@ -1,5 +1,22 @@
</span><span class="cx"> 2017-01-31 Matthew Hanson <matthew_hanson@apple.com>
</span><span class="cx">
</span><ins>+ Merge r211387. rdar://problem/29500273
+
+ 2017-01-30 Simon Fraser <simon.fraser@apple.com>
+
+ [iOS] position:fixed inside touch-scrollable overflow is mispositioned
+ https://bugs.webkit.org/show_bug.cgi?id=167604
+ rdar://problem/29500273
+
+ Reviewed by Zalan Bujtas.
+
+ Make sure we tell m_webPageProxy.computeCustomFixedPositionRect() when visual viewports are enabled.
+
+ * UIProcess/ios/RemoteScrollingCoordinatorProxyIOS.mm:
+ (WebKit::RemoteScrollingCoordinatorProxy::customFixedPositionRect):
+
+2017-01-31 Matthew Hanson <matthew_hanson@apple.com>
+
</ins><span class="cx"> Merge r211295. rdar://problem/30236297
</span><span class="cx">
</span><span class="cx"> 2017-01-27 Chris Dumez <cdumez@apple.com>
</span></span></pre></div>
<a id="branchessafari603branchSourceWebKit2UIProcessiosRemoteScrollingCoordinatorProxyIOSmm"></a>
<div class="modfile"><h4>Modified: branches/safari-603-branch/Source/WebKit2/UIProcess/ios/RemoteScrollingCoordinatorProxyIOS.mm (211520 => 211521)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/Source/WebKit2/UIProcess/ios/RemoteScrollingCoordinatorProxyIOS.mm        2017-02-01 21:26:47 UTC (rev 211520)
+++ branches/safari-603-branch/Source/WebKit2/UIProcess/ios/RemoteScrollingCoordinatorProxyIOS.mm        2017-02-01 21:26:51 UTC (rev 211521)
</span><span class="lines">@@ -94,7 +94,8 @@
</span><span class="cx">
</span><span class="cx"> FloatRect RemoteScrollingCoordinatorProxy::customFixedPositionRect() const
</span><span class="cx"> {
</span><del>- return m_webPageProxy.computeCustomFixedPositionRect(m_webPageProxy.unobscuredContentRect(), m_webPageProxy.unobscuredContentRectRespectingInputViewBounds(), m_webPageProxy.customFixedPositionRect(), m_webPageProxy.displayedContentScale());
</del><ins>+ return m_webPageProxy.computeCustomFixedPositionRect(m_webPageProxy.unobscuredContentRect(), m_webPageProxy.unobscuredContentRectRespectingInputViewBounds(), m_webPageProxy.customFixedPositionRect(),
+ m_webPageProxy.displayedContentScale(), WebPageProxy::UnobscuredRectConstraint::Unconstrained, visualViewportEnabled());
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> void RemoteScrollingCoordinatorProxy::scrollingTreeNodeWillStartPanGesture()
</span></span></pre>
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