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RE: [css3-speech] ISSUE-153 speak: none; usage incompatible with other values of speak

From: Belov, Charles <Charles.Belov@sfmta.com>
Date: Tue, 25 Jan 2011 09:30:17 -0800
Message-ID: <E17F75B6E86AE842A57B4534F82D03769C35E8@MTAMAIL.muni.sfgov.org>
To: "Daniel Weck" <daniel.weck@gmail.com>
Cc: <www-style@w3.org>, "fantasai" <fantasai.lists@inkedblade.net>

> -----Original Message-----
> From: Daniel Weck [mailto:daniel.weck@gmail.com] 
> Sent: Monday, January 24, 2011 6:22 PM
> To: Belov, Charles
> Cc: www-style@w3.org; fantasai
> Subject: Re: [css3-speech] ISSUE-153 speak: none; usage 
> incompatible with other values of speak
> On 24 Jan 2011, at 20:45, Belov, Charles wrote:
> > my concern would be that using display:none to achieve this would 
> > require that the aural styles be in a separate style sheet from the 
> > visual styles.
> Why ? It is just a case of the aural-related styles take 
> precedence (via the regular cascade mechanism) over visual 
> styles. Isn't it ?

If display:none is not specifically marked as aural-only and not in a
separate style-sheet, then visual agents would follow it as well.
> Also worth noting that MediaQueries / the @media at-rule can 
> be used to create a set of styles that only apply to 
> TTS-enabled user-agents.
Just because a user-agent is enabled for text-to-speech does not mean
that the visual presentation ought to be altered for those agents.  That
would impact people with low vision who use the audio presentation to
supplement the visual presentation.  

Hope this helps,
Charles Belov
SFMTA Webmaster
Received on Tuesday, 25 January 2011 17:33:50 UTC

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