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[css3-transitions] new Working Draft of CSS Transitions

From: L. David Baron <dbaron@dbaron.org>
Date: Tue, 3 Apr 2012 11:43:03 -0700
To: www-style@w3.org
Message-ID: <20120403184303.GA9547@crum.dbaron.org>
The CSS WG published an updated draft[1] of the CSS Transitions module:


This module allows specifying that certain CSS property changes that
would happen anyway will animate over time rather than taking place

This module updates the draft with many changes that have been made in
the editor's draft over the past few years.  This module is becoming
more stable, though a few significant open issues (noted in the issue
tracker or in the draft) need to be resolved before it can be moved to
last call.

The changes since the previous draft published on the TR page include:

 * new steps(), step-start, and step-end timing functions

 * cubic-bezier() timing function allows Y values outside of [0, 1]

 * clearer description of how future specifications will change how
   properties animate

 * In 'transition-property', 'all' is allowed within a list rather than
   only on its own.

 * Repeating behavior for transition-* properties have different lengths
   is defined; transition-property defines the number of transitions and
   the other properties are repeated or truncated as needed.

 * It is defined when (based on transition-property,
   transition-duration, and transition-delay) transitions (and thus
   transition events) occur.

 * Changes to the interpolation rules for font weight, visibility, lists
   of properties.

 * various changes to the list of animatable properties (removing
   shorthand, nonstandard, or future properties; changing clip,
   vertical-align, font-weight)

 * TransitionEvent objects expose the pseudo element on which the
   transition occurred.

See the hg log [2] for detailed changes.

Please send any comments to this mailing list, <www-style@w3.org>, and
please prefix the subject line with


as I did on this message.  But don't reply to this message; instead,
start a new thread.

For the CSS WG,
David Baron

[1] http://www.w3.org/TR/2012/WD-css3-transitions-20120403/
[2] http://dvcs.w3.org/hg/csswg/log/tip/css3-transitions/Overview.src.html

𝄞   L. David Baron                         http://dbaron.org/   𝄂
𝄢   Mozilla                           http://www.mozilla.org/   𝄂
Received on Tuesday, 3 April 2012 18:43:28 UTC

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