Re: [ttml2] condition attribute

On Wed, Nov 26, 2014 at 2:02 AM, Nigel Megitt <nigel.megitt@bbc.co.uk>
wrote:

>  Hi Glenn,
>
>  Is there any difference between setting the condition attribute of a
> body, div, p, region or span to "false" and setting the tts:display style
> attribute to "none"?
>

yes, for one thing, tts:display is animatable, while condition isn't;


>
>  If not, perhaps we should consider deprecating tts:display.
>
>  Kind regards,
>
>  Nigel
>
>
>
>   From: Glenn Adams <glenn@skynav.com>
> Date: Wednesday, 26 November 2014 02:03
> To: TTWG <public-tt@w3.org>
> Subject: [ttml2] condition attribute
> Resent-From: <public-tt@w3.org>
> Resent-Date: Wednesday, 26 November 2014 02:04
>
>   I've added support for a generic 'condition' attribute [1][2],
> available for use with any element type except profile matter vocabulary.
>
>  While the primary syntax is now drafted, additional details regarding
> semantics of condition expression processing semantics will be needed. But
> that can be safely done after FPWD.
>
>  [1]
> https://dvcs.w3.org/hg/ttml/raw-file/tip/ttml2/spec/ttml2.html#content-attribute-condition
> [2] https://dvcs.w3.org/hg/ttml/rev/0933a6108611
>
>