ASSIGNED 126651
Subpixel layout: RenderFlexibleBox::alignChildren() needs biased centering. 
https://bugs.webkit.org/show_bug.cgi?id=126651
Summary Subpixel layout: RenderFlexibleBox::alignChildren() needs biased centering.
zalan
Reported 2014-01-08 11:49:16 PST
While adjusting the alignment for children (adjustAlignmentForChild()), we should bias offset the delta when center positioning. adjustAlignmentForChild(*child, availableAlignmentSpaceForChild(lineCrossAxisExtent, *child) / 2); failed cases: fast/forms/range/input-appearance-range.html fast/hidpi/video-controls-in-hidpi.html fast/layers/video-layer.html fast/multicol/client-rects.html
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Add attachment proposed patch, testcase, etc.
Simon Fraser (smfr)
Comment 1 2014-01-08 15:25:44 PST
Check FF behavior, but prefer subpixel positioning.
Radar WebKit Bug Importer
Comment 2 2014-01-14 10:22:35 PST
<rdar://problem/15815513>
zalan
Comment 3 2014-01-14 16:27:04 PST
These custom controls look different on FF. By looking at the vertical positioning, the old behavior looks more centered. This is similar to bug 101848 (widget content centering)
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