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Re: [css-animations] CSS animations and non-interactive media

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Tue, 28 May 2013 08:33:14 -0700
Message-ID: <CAAWBYDD7363ZKTz0P_NH_854+Mo7wHFS_jpX+gJJYy4eDQutqA@mail.gmail.com>
To: "L. David Baron" <dbaron@dbaron.org>
Cc: www-style list <www-style@w3.org>
On Sun, May 26, 2013 at 8:53 PM, L. David Baron <dbaron@dbaron.org> wrote:
> http://dev.w3.org/csswg/css-animations/ is currently not clear on
> what CSS animations should do in non-interactive media.  (The
> "Media" lines in the spec are almost certainly wrong.)
>
> For example, when printing, what happens to CSS animations?  There
> are two obvious choices:
>
>   (1) ignore the animation properties and don't apply any animations
>
>   (2) honor the animation properties and freeze the animations at
>       time 0
>
> I tend to think the correct answer is (1); this allows authors to
> get reasonable fallback when the initial state of their animation is
> offscreen or similarly useless, and it matches the fallback they
> already (should) have for implementations that don't support CSS
> animations.
>
> (It's not what Gecko currently implements, but I'm thinking of
> changing it.)

This sounds correct to me.  Non-interactive media simply can't
*implement* animations, so they should be handled like anything else
that isn't implemented, and summarily ignored.

~TJ
Received on Tuesday, 28 May 2013 15:34:09 UTC

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