Bug 121843

Summary:

[CSS Regions] Propagating margins fails when there's a <p> inside the flowed <div>

Product:

WebKit

Reporter:

Mihai Maerean <mmaerean>

Component:

WebCore Misc.

Assignee:

Nobody <webkit-unassigned>

Status:

RESOLVED INVALID

Severity:

Normal

CC:

WebkitBugTracker

Priority:

Version:

528+ (Nightly build)

Hardware:

Unspecified

OS:

Unspecified

Bug Depends on:

Bug Blocks:

57312

Attachments:

Description	Flags
patch to delete the expected png(s) and to add the -expected.html file	none
test with regions	none
html without regions	none

Mihai Maerean

Reported 2013-09-24 09:22:41 PDT

Created attachment 212474 [details] patch to delete the expected png(s) and to add the -expected.html file When there's a <p> inside <div style="flow-into:flow">, the margins of the paragraph should collapse with the parent div but they don't. The LayoutTests/fast/regions/flow-content-basic.html test can't be turned into a ref test. The current expected png results are not correct. This bug blocks bug #120457.

Attachments
patch to delete the expected png(s) and to add the -expected.html file (75.95 KB, patch) 2013-09-24 09:22 PDT, Mihai Maerean	no flags	Details Formatted Diff Diff
test with regions (1.27 KB, text/html) 2013-09-25 02:02 PDT, Mihai Maerean	no flags	Details
html without regions (1.04 KB, text/html) 2013-09-25 02:03 PDT, Mihai Maerean	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Mihai Maerean

Comment 1 2013-09-25 02:02:37 PDT

Created attachment 212542 [details] test with regions

Mihai Maerean

Comment 2 2013-09-25 02:03:50 PDT

Created attachment 212543 [details] html without regions

Mihai Maerean

Comment 3 2013-10-01 04:51:25 PDT

This bug is invalid because: 1. In CSS, the adjoining margins of two or more boxes (which might or might not be siblings) can combine to form a single margin. Two margins are adjoining if and only if both belong to in-flow block-level boxes that participate in the same block formatting context ( http://www.w3.org/TR/CSS2/box.html#collapsing-margins ) 2. CSS Regions establish a new block formatting Context. ( http://dev.w3.org/csswg/css-regions/ )

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