Bug 53140

Summary: CSS 2.1 failure: dynamic-top-change-005 fails
Product: WebKit Reporter: Simon Fraser (smfr) <simon.fraser>
Component: CSSAssignee: Robert Hogan <robert>
Status: RESOLVED DUPLICATE    
Severity: Normal CC: hyatt, robert, simon.fraser, tabatkins
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: PC   
OS: OS X 10.5   
Bug Depends on: 68149, 69210    
Bug Blocks: 47141    
Attachments:
Description Flags
Reduction
none
Easier to understand reduction none

Attachments
Reduction (395 bytes, text/html)
2011-09-18 15:11 PDT, Robert Hogan 		no flags
Details
Easier to understand reduction (780 bytes, text/html)
2011-09-29 12:59 PDT, Robert Hogan 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Simon Fraser (smfr)
Comment 1 2011-01-25 16:15:05 PST
Maybe we get containing block wrong for relpos inline inside relpos inline?
Simon Fraser (smfr)
Comment 2 2011-01-25 16:17:41 PST
We're also failing to re-layout on the dynamic change.
Simon Fraser (smfr)
Comment 3 2011-01-26 09:32:51 PST
Part of the issue is with top: inherit not causing layout when the inherited value changes.
Simon Fraser (smfr)
Comment 4 2011-01-26 09:33:58 PST
(In reply to comment #3) > Part of the issue is with top: inherit not causing layout when the inherited value changes. This issue seems fixed on TOT.
Robert Hogan
Comment 5 2011-09-18 15:11:13 PDT
Created attachment 107799 [details] Reduction This is a reduction of the issue, though I'm not 100% sure it is an issue. dynamic-top-change-005 expects a relatively positioned originally inlined block-display child of a relatively positioned inline parent to render relative to the parent. So in the case of the reduction, it should render 75px relative to the top of the view. Firefox does this, but WebKit and Opera render 25px relative to the top of the view. The reason WebKit does this is because the parent and child are in fact sibling render layers rather than parent and child, which is a result I guess of handling a block inside an inline flow. So is this an wanted side-effect of the 'All in-flow children of an inline flow must be inlines.' rule, or is the test wrong-headed in the first place?
Robert Hogan
Comment 6 2011-09-18 15:34:10 PDT
It really does look like the test expects the relpos block to offset 50px from the inline parent rather than the nearest containing block, which is the 'grandparent'. Is that really the expected behaviour of a relatively positioned block?
Robert Hogan
Comment 7 2011-09-29 12:59:53 PDT
Created attachment 109192 [details] Easier to understand reduction This makes the issue (as I see it) easier to see - there is no red if the relpos inline block calculates its offset from the relpos inline parent.
Robert Hogan
Comment 8 2012-02-19 02:58:42 PST
*** This bug has been marked as a duplicate of bug 69210 ***
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