- From: Tab Atkins Jr. <jackalmage@gmail.com>
- Date: Thu, 28 Mar 2013 15:52:17 -0700
- To: www-style list <www-style@w3.org>
- Cc: Morten Stenshorne <mstensho@opera.com>
Back in Flexbox's LC, we had an LC issue from Morten <http://dev.w3.org/csswg/css3-flexbox/issues-lc-2012#issue-5> about flex items painting atomically (that is, establishing pseudo-stacking contexts). There was definitely a preference that they be atomic, but we couldn't find a strong enough reason to make them inconsistent with table cells, which paint non-atomically like blocks. We're wondering if we could just change table cells (and thus flex items and grid items) to paint atomically, though. As far as we can tell, the only way this behavior would be noticeable is a float from outside the table cell overlaps the table cell (via negative margins), which currently makes the float paint *above* the table cell's background, but *below* the table cell's contents. This change would make it either paint above or below the entire table cell, depending on their relative tree positions. This situation seems like it would be rather uncommon, and more atomicity in painting is pretty much always a good idea for implementations and easier for authors to understand. So the key question is, is this change web-compatible, and do we want to make it? ~TJ and fantasai
Received on Thursday, 28 March 2013 22:53:04 UTC