I'm working on implementing CSS transitions (see
https://bugzilla.mozilla.org/show_bug.cgi?id=435441 ). This
requires that we, at various times, compute the style both with and
without the overrides from the transition.
My initial design ideas were that:
1) We'd only store one style or the other at any given time.
2) We'd decide whether to include transitions by knowing whether we
were currently advancing a transition.
I think I've come to the conclusion that (2) is a mistake because of
all the flushing that it would require (i.e., it would require
flushing style both before and after advancing transitions) and the
fragility and weird flush-timing-dependency of the process of
starting a transition.
So I think I'm leaning towards a model where a restyle has an
explicit parameter that says whether it's with or without
transitions. (When we get a without-transitions restyle, and the
style changes, we then start a transition and post a
with-transitions restyle to get the data from it.)
But I think I'm also inclined to stick with (1) rather than adding
the complexity of storing two sets of style data.
Does this sound reasonable?
-David
--
L. David Baron http://dbaron.org/
Mozilla Corporation http://www.mozilla.com/
_______________________________________________
dev-tech-layout mailing list
[email protected]
https://lists.mozilla.org/listinfo/dev-tech-layout
