- From: Tab Atkins Jr. <jackalmage@gmail.com>
- Date: Tue, 27 Apr 2010 11:16:32 -0700
- To: Brad Kemper <brad.kemper@gmail.com>
- Cc: Simon Fraser <smfr@me.com>, www-style list <www-style@w3.org>
On Mon, Apr 26, 2010 at 11:36 AM, Brad Kemper <brad.kemper@gmail.com> wrote: > On Apr 26, 2010, at 10:56 AM, Simon Fraser <smfr@me.com> wrote: > >> The main issue is that, when transitioning to an 'auto' height, the user >> agent would have to do a layout for the page in its final state in order to >> determine the destination height of the element. And, of course, that height >> may depend on all sorts of other style rules, some of which themselves may >> be animating, and which could also change for other reasons while the >> transition is running. > > I figured that was the issue, but I think that even the transition was based > on a snapshot of the used values at the beginning or end of the transition, > that would be huge, and be closer to what JavaScript animation libraries can > do. I suspect that this would be sufficient as well. We definitely need the ability to transition to auto in some manner, and I think just doing a single tentative layout to establish an end-point for the transition will be "good enough". ~TJ
Received on Tuesday, 27 April 2010 18:17:27 UTC