Bug 34381

Summary: Incomplete repaint of YouTube timeline thumb while scrolling
Product: WebKit Reporter: mitz
Component: Layout and RenderingAssignee: Nobody <webkit-unassigned>
Status: RESOLVED FIXED    
Severity: Normal CC: simon.fraser
Priority: P2 Keywords: GoogleBug, HasReduction, InRadar
Version: 528+ (Nightly build)   
Hardware: All   
OS: All   
Attachments:
Description Flags
Reduction
none
Override -setNeedsDisplayInRect: and adjust the invalid rects during scrolling simon.fraser: review+

mitz
Reported 2010-01-30 18:12:51 PST
Created attachment 47778 [details] Reduction The timeline thumb on YouTube videos using a custom <video> controller leaves trails behind if the page is scrolled while the video is playing. This is apparently caused by a scroll event listener that forces layout, and can be reproduced with the attached reduction by scrolling it slowly, either by Option-dragging the scroller or scrolling with a Magic Mouse.
Attachments
Reduction (506 bytes, text/html)
2010-01-30 18:12 PST, mitz 		no flags
Details
Override -setNeedsDisplayInRect: and adjust the invalid rects during scrolling (3.16 KB, patch)
2010-02-22 23:06 PST, mitz 		simon.fraser: review+
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
mitz
Comment 1 2010-01-30 18:13:54 PST
This happens in TOT as well as in Safari 4.0.4.
mitz
Comment 2 2010-02-03 22:05:27 PST
<rdar://problem/7611158>
mitz
Comment 3 2010-02-22 23:06:33 PST
Created attachment 49267 [details] Override -setNeedsDisplayInRect: and adjust the invalid rects during scrolling
Simon Fraser (smfr)
Comment 4 2010-02-23 07:53:54 PST
Comment on attachment 49267 [details] Override -setNeedsDisplayInRect: and adjust the invalid rects during scrolling r=me I guess it's not possible to do a repaint test?
mitz
Comment 5 2010-02-23 09:55:20 PST
Fixed in <http://trac.webkit.org/projects/webkit/changeset/55159>.
Simon Fraser (smfr)
Comment 6 2016-10-07 16:39:29 PDT
Followup fix in bug 163154.
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