Bug 37148

Summary: [Qt] Rendering artifacts with copy scrolling with fixed position elements inside iframe
Product: WebKit Reporter: Kevin Simons <kevin.simons>
Component: Layout and RenderingAssignee: Benjamin Poulain <benjamin>
Status: RESOLVED FIXED    
Severity: Normal CC: benjamin, hausmann, kenneth, kling, laszlo.gombos
Priority: P3 Keywords: Performance, Qt, QtTriaged
Version: 528+ (Nightly build)   
Hardware: All   
OS: All   
Bug Depends on: 33150    
Bug Blocks:    
Attachments:
Description Flags
Contains the iframe that loads content.html
none
The content of the iframe none

Kevin Simons
Reported 2010-04-06 06:39:37 PDT
Created attachment 52627 [details] Contains the iframe that loads content.html Rendering errors for the fixed position elements when scrolling the contents of the iframe up and down when using copy scrolling optimization. If the content itself is loaded directly (i.e. without the iframe) there are no artifacts.
Attachments
Contains the iframe that loads content.html (255 bytes, text/html)
2010-04-06 06:39 PDT, Kevin Simons 		no flags
Details
The content of the iframe (1.95 KB, text/html)
2010-04-06 06:40 PDT, Kevin Simons 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Kevin Simons
Comment 1 2010-04-06 06:40:12 PDT
Created attachment 52628 [details] The content of the iframe
Benjamin Poulain
Comment 2 2010-04-30 04:25:38 PDT
This is due to my current implementation. The new implementation should not have the issue because the repaint rect take into account the border. I add this task as a dependency of 33150 to remind us to test the new implementation with this use case.
Andreas Kling
Comment 3 2010-06-28 00:47:21 PDT
Benjamin: ping. Can we close this?
Benjamin Poulain
Comment 4 2010-06-28 02:50:59 PDT
(In reply to comment #3) > Benjamin: ping. Can we close this? Yep :) I verified with 4.7 and 4.6, the new implementation does not have this issue.
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