Title: [176240] trunk/Source/WebCore
- Revision
- 176240
- Author
- [email protected]
- Date
- 2014-11-17 17:49:33 -0800 (Mon, 17 Nov 2014)
Log Message
[iOS WK1] Sometimes, missing tiles in -webkit-overflow-scrolling: touch in UIWebViews
https://bugs.webkit.org/show_bug.cgi?id=138815
rdar://problem/18746203
Reviewed by Tim Horton.
The scroll-velocity-related data members on FrameView, added in r168233, were uninitialized in UIWebViews,
so FrameView::computeCoverageRect() could return garbage results, leading to too much or too little tile coverage.
We still add additional coverage from the new inclusion of a margin area, but, for simplicity, leave that the same
between WK1 and WK2 for now.
* page/FrameView.cpp:
(WebCore::FrameView::FrameView):
Modified Paths
Diff
Modified: trunk/Source/WebCore/ChangeLog (176239 => 176240)
--- trunk/Source/WebCore/ChangeLog 2014-11-18 01:14:46 UTC (rev 176239)
+++ trunk/Source/WebCore/ChangeLog 2014-11-18 01:49:33 UTC (rev 176240)
@@ -1,3 +1,20 @@
+2014-11-17 Simon Fraser <[email protected]>
+
+ [iOS WK1] Sometimes, missing tiles in -webkit-overflow-scrolling: touch in UIWebViews
+ https://bugs.webkit.org/show_bug.cgi?id=138815
+ rdar://problem/18746203
+
+ Reviewed by Tim Horton.
+
+ The scroll-velocity-related data members on FrameView, added in r168233, were uninitialized in UIWebViews,
+ so FrameView::computeCoverageRect() could return garbage results, leading to too much or too little tile coverage.
+
+ We still add additional coverage from the new inclusion of a margin area, but, for simplicity, leave that the same
+ between WK1 and WK2 for now.
+
+ * page/FrameView.cpp:
+ (WebCore::FrameView::FrameView):
+
2014-11-17 Chris Dumez <[email protected]>
Add initial layout testing coverage for timer throttling
Modified: trunk/Source/WebCore/page/FrameView.cpp (176239 => 176240)
--- trunk/Source/WebCore/page/FrameView.cpp 2014-11-18 01:14:46 UTC (rev 176239)
+++ trunk/Source/WebCore/page/FrameView.cpp 2014-11-18 01:49:33 UTC (rev 176240)
@@ -188,6 +188,10 @@
#if PLATFORM(IOS)
, m_useCustomFixedPositionLayoutRect(false)
, m_useCustomSizeForResizeEvent(false)
+ , m_horizontalVelocity(0)
+ , m_verticalVelocity(0)
+ , m_scaleChangeRate(0)
+ , m_lastVelocityUpdateTime(0)
#endif
, m_hasOverrideViewportSize(false)
, m_shouldAutoSize(false)
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