RE: ARIA: math role is intended for math images not real math, so it should just be role="img"

Is there a particular syntax how to write the alt string in these cases for an image with role=math ? 

 

- Stefan

 

From: wai-xtech-request@w3.org [mailto:wai-xtech-request@w3.org] On Behalf Of Aaron M Leventhal
Sent: Montag, 8. Dezember 2008 09:20
To: James Craig
Cc: WAI XTech; wai-xtech-request@w3.org
Subject: Re: ARIA: math role is intended for math images not real math, so it should just be role="img"

 


The math role allows the AT to assume that the alt text is something that can be converted to Braille or TTS mathematics. The AT can't know to do that if they only know it's a generic image. 

This gives us a short term solution until MathML becomes more predominate on the web. Right now authors are using <img> for math because there is no other simple cross-browser way. This is a recognition of that fact, which allows that technique to be made accessible. 

- Aaron 



From: 

James Craig <jcraig@apple.com> 

To: 

WAI XTech <wai-xtech@w3.org> 

Date: 

12/08/2008 03:13 AM 

Subject: 

ARIA: math role is intended for math images not real math, so it should just be role="img"

 

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ARIA role="math" states, "This is for sections that represent math,  
such as images and ASCII art, but are not in a formal mathematical  
language. Such images MUST be labeled…" Since real math can be  
described by "a formal mathematical language," this is just an image,  
nothing more. As such, we should ditch the "math" role and just use  
the "img" role for all instances of images.