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Re: role="presentation" on an image

From: Steven Faulkner <faulkner.steve@gmail.com>
Date: Mon, 23 Aug 2010 15:38:23 +0100
Message-ID: <AANLkTi=L4shQC0T55VmxRiz+k=qQMJEDqOSPOQgyMZdb@mail.gmail.com>
To: "Richards, Jan" <jrichards@ocad.ca>
Cc: David Bolter <david.bolter@gmail.com>, W3C WAI-XTECH <wai-xtech@w3.org>
Hi Jan,
I am thinking about situations where an image contains information that
needs to be conveyed, but the fact that it is an image is not relevant. How
can that be conveyed?

regards
stevef

On 23 August 2010 15:35, Richards, Jan <jrichards@ocad.ca> wrote:

>  Hi Steve,
>
>
>
> The issue is really what to do with the conflicting semantics.
> Role=Presentation implies the image is decorative and can be ignored, while
> alt=”home page” implies the image is functional and should have alt text.
>
>
>
> I suggest a heuristic that errs on the side of functional and disregards
> the role=Presentation if alt (or labelled-by or described-by) is present.
>
>
>
> Cheers,
>
> Jan
>
>
>
> --
>
> (Mr) Jan Richards, M.Sc.
>
> jrichards@ocad.ca | 416-977-6000 ext. 3957 | fax: 416-977-9844
>
> Inclusive Design Research Centre (IDRC) | http://inclusivedesign.ca/
>
> Faculty of Design | OCAD University
>
>
>
> *From:* wai-xtech-request@w3.org [mailto:wai-xtech-request@w3.org] *On
> Behalf Of *Steven Faulkner
> *Sent:* August 23, 2010 10:28 AM
> *To:* David Bolter
> *Cc:* W3C WAI-XTECH
> *Subject:* Re: role="presentation" on an image
>
>
>
> hi dave,
>
> >role="label"
>
>
>
> there is no ARIA role="label"
>
> there is an aria-label property.
>
>
>
> regards
>
> steve
>
> On 23 August 2010 15:23, David Bolter <david.bolter@gmail.com> wrote:
>
> Hi Steve,
>
> What about putting role="label" on the image, and adding an aria-labelledby
> relation?
>
> cheers,
> D
>
>
>
> On 23/08/10 7:59 AM, Steven Faulkner wrote:
>
> Hi all,
>
> If an image has a role=presentation and a non empty alt, shouldn't the alt
> text be passed to AT?
>
>
>
> example:
>
>
>
> <a href="home.html"><img src="home.gif" alt="home page"></a>
>
>
>
> currently this typically results in a screen reader announcing:
>
>
>
> "link graphic home page"
>
>
>
> when the presenece of the role information seems less than useful in
> context.
>
>
>
> if role="presentation" allaowed the text "content" of the image object to
> be passed to AT then
>
>
>
> <a href="home.html"><img src="home.gif" alt="home page"
> role="presentation"></a>
>
>
>
> would result in the follwoing being announced:
>
>
>
> "link home page"
>
>
>
> currently this does not work as adding role="presentation" removes the
> image form the browsers accessible tree.
>
> --
> with regards
>
> Steve Faulkner
> Technical Director - TPG Europe
> Director - Web Accessibility Tools Consortium
>
> www.paciellogroup.com | www.wat-c.org
> Web Accessibility Toolbar -
> http://www.paciellogroup.com/resources/wat-ie-about.html
>
>
>
>
>
>
> --
> with regards
>
> Steve Faulkner
> Technical Director - TPG Europe
> Director - Web Accessibility Tools Consortium
>
> www.paciellogroup.com | www.wat-c.org
> Web Accessibility Toolbar -
> http://www.paciellogroup.com/resources/wat-ie-about.html
>



-- 
with regards

Steve Faulkner
Technical Director - TPG Europe
Director - Web Accessibility Tools Consortium

www.paciellogroup.com | www.wat-c.org
Web Accessibility Toolbar -
http://www.paciellogroup.com/resources/wat-ie-about.html
Received on Monday, 23 August 2010 14:39:17 GMT

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