Bug 37148 - [Qt] Rendering artifacts with copy scrolling with fixed position elements inside iframe
Summary: [Qt] Rendering artifacts with copy scrolling with fixed position elements ins...
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: 528+ (Nightly build)
Hardware: All All
: P3 Normal
Assignee: Benjamin Poulain
URL:
Keywords: Performance, Qt, QtTriaged
Depends on: 33150
Blocks:
  Show dependency tree / graph
 
Reported: 2010-04-06 06:39 PDT by Kevin Simons
Modified: 2010-06-28 02:50 PDT (History)
5 users (show)

See Also:

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
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Description Kevin Simons 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.
Comment 1 Kevin Simons 2010-04-06 06:40:12 PDT 
Created attachment 52628 [details]
The content of the iframe
Comment 2 Benjamin Poulain 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.
Comment 3 Andreas Kling 2010-06-28 00:47:21 PDT 
Benjamin: ping. Can we close this?
Comment 4 Benjamin Poulain 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.