Bug 37264

Summary: [Qt] "planet" css animation is not fixed to the top of the viewport when tile backing store is enabled
Product: WebKit Reporter: Zoltan Herczeg <zherczeg>
Component: New BugsAssignee: Nobody <webkit-unassigned>
Status: RESOLVED WONTFIX    
Severity: Major CC: hausmann, kenneth, koivisto, tonikitoo
Priority: P2 Keywords: Qt
Version: 528+ (Nightly build)   
Hardware: All   
OS: All   
Attachments:
Description Flags
iframe issue none

Zoltan Herczeg
Reported 2010-04-08 05:47:56 PDT
Open this page: www.sc2armory.com There is a nice planet in the background, which is fixed to the top of the viewport, regardless of scrolling. This is working with QtLauncher as well. However, if the tile backing store is enabled, the planet can be scrolled out. I think the following css rule cause the problem: protoss.css: #planet { background: url("/img/themes/protoss/planet.jpg") top center no-repeat; background-attachment: fixed; }
Attachments
iframe issue (37.26 KB, image/png)
2010-04-13 02:48 PDT, Zoltan Herczeg 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Antonio Gomes
Comment 1 2010-04-08 07:24:51 PDT
that is a great testcase and imo we shoudl raise Importance, but not necesseraly Priority
Antti Koivisto
Comment 2 2010-04-09 04:06:46 PDT
Tiling is currently incompatible with fixed positioning (as mentioned in the API documentation too). To allow fixed positioning, the positioned elements should be drawn into a different layer possibly using the accelerated compositing code paths.
Zoltan Herczeg
Comment 3 2010-04-09 06:57:48 PDT
Thank you letting me know.
Zoltan Herczeg
Comment 4 2010-04-13 02:48:11 PDT
Created attachment 53235 [details] iframe issue Is it also a known "feature"? When I move the scrollbars of the iframe, I got the attached image. link: http://www.w3schools.com/TAGS/tryit.asp?filename=tryhtml_iframe
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