Bug 30398

Summary: [Qt] Scrolling over an svg leaves artifacts
Product: WebKit Reporter: Bernhard Rosenkraenzer <bero>
Component: SVGAssignee: Nobody <webkit-unassigned>
Status: RESOLVED WONTFIX    
Severity: Normal CC: kent.hansen, kling, zimmermann
Priority: P2 Keywords: Qt, QtTriaged
Version: 528+ (Nightly build)   
Hardware: All   
OS: Linux   
Attachments:
Description Flags
Screenshot showing the problem
none
Test case from 30393 none

Bernhard Rosenkraenzer
Reported 2009-10-15 10:51:31 PDT
Created attachment 41234 [details] Screenshot showing the problem Run the test application from bug 30393. Scroll to the bottom, then move the scrollbar back to the top slowly. The svg that was included with img src= now has white lines all over it (probably an off-by-1 in repainting it, leaving 1 line from the frame).
Attachments
Screenshot showing the problem (46.20 KB, image/png)
2009-10-15 10:51 PDT, Bernhard Rosenkraenzer 		no flags
Details
Test case from 30393 (6.38 KB, application/octet-stream)
2010-11-19 06:54 PST, Benjamin Poulain 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Andreas Kling
Comment 1 2010-02-15 03:09:24 PST
This problem does not occur when using -graphicssystem raster Looks like a bug in Qt's X11 paintengine to me, although my attempt at hacking together a reduced testcase was unsuccessful.
Tor Arne Vestbø
Comment 2 2010-03-05 09:39:30 PST
Please follow the QtWebKit bug reporting guidelines when reporting bugs. See http://trac.webkit.org/wiki/QtWebKitBugs Specifically: - The 'QtWebKit' component should be used for bugs/features in the public QtWebKit API layer, not to signify that the bug is specific to the Qt port of WebKit http://trac.webkit.org/wiki/QtWebKitBugs#Component
Nikolas Zimmermann
Comment 3 2010-07-09 07:14:14 PDT
Changed component to SVG, so it shows up in my all-svg-bugs search.
Benjamin Poulain
Comment 4 2010-11-19 06:54:32 PST
Created attachment 74383 [details] Test case from 30393
Andreas Kling
Comment 5 2011-02-27 11:12:22 PST
X11 paintengine bugs are not relevant anymore since Qt is switching to raster by default in 4.8.
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