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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/245212">245212</a></dd>
<dt>Author</dt> <dd>simon.fraser@apple.com</dd>
<dt>Date</dt> <dd>2019-05-11 16:17:17 -0700 (Sat, 11 May 2019)</dd>
</dl>
<h3>Log Message</h3>
<pre>Overflow scroll that becomes non-scrollable should stop being composited
https://bugs.webkit.org/show_bug.cgi?id=197817
<rdar://problem/50697290>
Reviewed by Antti Koivisto.
Source/WebCore:
Remove the iOS-specific #ifdef around code that triggers a compositing re-evaluation
when scrolling state changes.
Test: compositing/scrolling/async-overflow-scrolling/become-non-scrollable.html
* rendering/RenderLayer.cpp:
(WebCore::RenderLayer::updateScrollInfoAfterLayout):
LayoutTests:
Put in a compositing/scrolling/async-overflow-scrolling dir so we can enable it only
for platforms that have async overflow scrolling.
* TestExpectations:
* compositing/scrolling/async-overflow-scrolling/become-non-scrollable-expected.txt: Added.
* compositing/scrolling/async-overflow-scrolling/become-non-scrollable.html: Added.
* platform/ios-wk2/TestExpectations:
* platform/mac-wk2/TestExpectations:</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkLayoutTestsTestExpectations">trunk/LayoutTests/TestExpectations</a></li>
<li><a href="#trunkLayoutTestsplatformioswk2TestExpectations">trunk/LayoutTests/platform/ios-wk2/TestExpectations</a></li>
<li><a href="#trunkLayoutTestsplatformmacwk2TestExpectations">trunk/LayoutTests/platform/mac-wk2/TestExpectations</a></li>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderLayercpp">trunk/Source/WebCore/rendering/RenderLayer.cpp</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li>trunk/LayoutTests/compositing/scrolling/async-overflow-scrolling/</li>
<li><a href="#trunkLayoutTestscompositingscrollingasyncoverflowscrollingbecomenonscrollableexpectedtxt">trunk/LayoutTests/compositing/scrolling/async-overflow-scrolling/become-non-scrollable-expected.txt</a></li>
<li><a href="#trunkLayoutTestscompositingscrollingasyncoverflowscrollingbecomenonscrollablehtml">trunk/LayoutTests/compositing/scrolling/async-overflow-scrolling/become-non-scrollable.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (245211 => 245212)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog 2019-05-11 23:14:03 UTC (rev 245211)
+++ trunk/LayoutTests/ChangeLog 2019-05-11 23:17:17 UTC (rev 245212)
</span><span class="lines">@@ -1,3 +1,20 @@
</span><ins>+2019-05-11 Simon Fraser <simon.fraser@apple.com>
+
+ Overflow scroll that becomes non-scrollable should stop being composited
+ https://bugs.webkit.org/show_bug.cgi?id=197817
+ <rdar://problem/50697290>
+
+ Reviewed by Antti Koivisto.
+
+ Put in a compositing/scrolling/async-overflow-scrolling dir so we can enable it only
+ for platforms that have async overflow scrolling.
+
+ * TestExpectations:
+ * compositing/scrolling/async-overflow-scrolling/become-non-scrollable-expected.txt: Added.
+ * compositing/scrolling/async-overflow-scrolling/become-non-scrollable.html: Added.
+ * platform/ios-wk2/TestExpectations:
+ * platform/mac-wk2/TestExpectations:
+
</ins><span class="cx"> 2019-05-11 Alexey Proskuryakov <ap@apple.com>
</span><span class="cx">
</span><span class="cx"> Cleaning up results for legacy-animation-engine tests
</span></span></pre></div>
<a id="trunkLayoutTestsTestExpectations"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/TestExpectations (245211 => 245212)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/TestExpectations 2019-05-11 23:14:03 UTC (rev 245211)
+++ trunk/LayoutTests/TestExpectations 2019-05-11 23:17:17 UTC (rev 245212)
</span><span class="lines">@@ -61,6 +61,7 @@
</span><span class="cx">
</span><span class="cx"> # Requires async overflow scrolling
</span><span class="cx"> compositing/shared-backing/overflow-scroll [ Skip ]
</span><ins>+compositing/scrolling/async-overflow-scrolling [ Skip ]
</ins><span class="cx">
</span><span class="cx"> # WebKit2 only.
</span><span class="cx"> printing/printing-events.html [ Skip ]
</span></span></pre></div>
<a id="trunkLayoutTestscompositingscrollingasyncoverflowscrollingbecomenonscrollableexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/compositing/scrolling/async-overflow-scrolling/become-non-scrollable-expected.txt (0 => 245212)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/compositing/scrolling/async-overflow-scrolling/become-non-scrollable-expected.txt (rev 0)
+++ trunk/LayoutTests/compositing/scrolling/async-overflow-scrolling/become-non-scrollable-expected.txt 2019-05-11 23:17:17 UTC (rev 245212)
</span><span class="lines">@@ -0,0 +1,3 @@
</span><ins>+There should be no layers.
+
+
</ins></span></pre></div>
<a id="trunkLayoutTestscompositingscrollingasyncoverflowscrollingbecomenonscrollablehtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/compositing/scrolling/async-overflow-scrolling/become-non-scrollable.html (0 => 245212)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/compositing/scrolling/async-overflow-scrolling/become-non-scrollable.html (rev 0)
+++ trunk/LayoutTests/compositing/scrolling/async-overflow-scrolling/become-non-scrollable.html 2019-05-11 23:17:17 UTC (rev 245212)
</span><span class="lines">@@ -0,0 +1,51 @@
</span><ins>+<!DOCTYPE html> <!-- webkit-test-runner [ internal:AsyncOverflowScrollingEnabled=true ] -->
+<html>
+<head>
+ <title>Tests an overflow scroll stops compositing if its content shrinks</title>
+ <style>
+ .scrollable {
+ overflow-y: scroll;
+ height: 300px;
+ width: 300px;
+ margin: 10px;
+ border: 1px solid black;
+ }
+
+ .contents {
+ height: 500px;
+ width: 20px;
+ background-color: silver;
+ }
+
+ .contents.changed {
+ height: 100px;
+ }
+ </style>
+ <script>
+ if (window.testRunner) {
+ testRunner.dumpAsText();
+ testRunner.waitUntilDone();
+ }
+
+ window.addEventListener('load', () => {
+ setTimeout(() => {
+ document.querySelector('.contents').classList.add('changed');
+
+ if (window.internals)
+ document.getElementById('layers').innerText = window.internals.layerTreeAsText(document);
+
+ if (window.testRunner)
+ testRunner.notifyDone();
+ }, 0);
+ }, false);
+ </script>
+</head>
+<body>
+ <div class="scrollable">
+ <div class="contents"></div>
+ </div>
+<p>There should be no layers.</p>
+<pre id="layers"></pre>
+</body>
+</html>
+
</ins></span></pre></div>
<a id="trunkLayoutTestsplatformioswk2TestExpectations"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/platform/ios-wk2/TestExpectations (245211 => 245212)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/ios-wk2/TestExpectations 2019-05-11 23:14:03 UTC (rev 245211)
+++ trunk/LayoutTests/platform/ios-wk2/TestExpectations 2019-05-11 23:17:17 UTC (rev 245212)
</span><span class="lines">@@ -8,6 +8,7 @@
</span><span class="cx">
</span><span class="cx"> compositing/ios [ Pass ]
</span><span class="cx"> compositing/shared-backing/overflow-scroll [ Pass ]
</span><ins>+compositing/scrolling/async-overflow-scrolling [ Pass ]
</ins><span class="cx"> fast/device-orientation [ Pass ]
</span><span class="cx"> fast/history/ios [ Pass ]
</span><span class="cx"> fast/scrolling/ios [ Pass ]
</span></span></pre></div>
<a id="trunkLayoutTestsplatformmacwk2TestExpectations"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/platform/mac-wk2/TestExpectations (245211 => 245212)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/platform/mac-wk2/TestExpectations 2019-05-11 23:14:03 UTC (rev 245211)
+++ trunk/LayoutTests/platform/mac-wk2/TestExpectations 2019-05-11 23:17:17 UTC (rev 245212)
</span><span class="lines">@@ -6,6 +6,7 @@
</span><span class="cx"> #//////////////////////////////////////////////////////////////////////////////////////////
</span><span class="cx">
</span><span class="cx"> compositing/shared-backing/overflow-scroll [ Pass ]
</span><ins>+compositing/scrolling/async-overflow-scrolling [ Pass ]
</ins><span class="cx"> editing/find [ Pass ]
</span><span class="cx"> editing/undo-manager [ Pass ]
</span><span class="cx"> fast/forms/select/mac-wk2 [ Pass ]
</span></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (245211 => 245212)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2019-05-11 23:14:03 UTC (rev 245211)
+++ trunk/Source/WebCore/ChangeLog 2019-05-11 23:17:17 UTC (rev 245212)
</span><span class="lines">@@ -1,5 +1,21 @@
</span><span class="cx"> 2019-05-11 Simon Fraser <simon.fraser@apple.com>
</span><span class="cx">
</span><ins>+ Overflow scroll that becomes non-scrollable should stop being composited
+ https://bugs.webkit.org/show_bug.cgi?id=197817
+ <rdar://problem/50697290>
+
+ Reviewed by Antti Koivisto.
+
+ Remove the iOS-specific #ifdef around code that triggers a compositing re-evaluation
+ when scrolling state changes.
+
+ Test: compositing/scrolling/async-overflow-scrolling/become-non-scrollable.html
+
+ * rendering/RenderLayer.cpp:
+ (WebCore::RenderLayer::updateScrollInfoAfterLayout):
+
+2019-05-11 Simon Fraser <simon.fraser@apple.com>
+
</ins><span class="cx"> Layer bounds are incorrect for sharing layers that paint with transforms
</span><span class="cx"> https://bugs.webkit.org/show_bug.cgi?id=197768
</span><span class="cx"> <rdar://problem/50695493>
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderLayercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderLayer.cpp (245211 => 245212)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderLayer.cpp 2019-05-11 23:14:03 UTC (rev 245211)
+++ trunk/Source/WebCore/rendering/RenderLayer.cpp 2019-05-11 23:17:17 UTC (rev 245212)
</span><span class="lines">@@ -3709,10 +3709,8 @@
</span><span class="cx"> setNeedsCompositingConfigurationUpdate();
</span><span class="cx"> }
</span><span class="cx">
</span><del>-#if PLATFORM(IOS_FAMILY)
</del><span class="cx"> if (canUseCompositedScrolling())
</span><span class="cx"> setNeedsPostLayoutCompositingUpdate();
</span><del>-#endif
</del><span class="cx">
</span><span class="cx"> updateScrollSnapState();
</span><span class="cx"> }
</span></span></pre>
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