RESOLVED FIXED 192214
[LFC][BFC][MarginCollapsing] Do not use computed display box values for border and padding 
https://bugs.webkit.org/show_bug.cgi?id=192214
Summary [LFC][BFC][MarginCollapsing] Do not use computed display box values for borde...
zalan
Reported 2018-11-29 21:11:32 PST
they are not computed yet when we are trying to estimate margin top values. try to survive with the non-computed values. <body><div style="float: left"></div><div><div style="margin-top: 10px">foobar</div></div> when the floating box is placed, we need to know its final vertical position. We estimate margin tops all the way to the formatting context root. To computer margin-top for the <body>, we actually have to know if that nested div's margin gets collapsed all the way up. To find it out we need to know padding and border values. Unfortunately at the time when the float is placed we don't yet have that information.
Attachments
Patch (11.94 KB, patch)
2018-11-29 21:27 PST, zalan 		koivisto: review+
DetailsFormatted DiffDiff
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zalan
Comment 1 2018-11-29 21:27:43 PST
Created attachment 356127 [details] Patch
zalan
Comment 2 2018-11-30 07:22:46 PST
Committed r238735: <https://trac.webkit.org/changeset/238735>
Radar WebKit Bug Importer
Comment 3 2018-11-30 07:23:37 PST
<rdar://problem/46372648>
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