W3C home > Mailing lists > Public > public-html@w3.org > January 2010

Re: Canvas Accessibility Next steps

From: Jon Gunderson <jongund@illinois.edu>
Date: Fri, 22 Jan 2010 08:30:32 -0600 (CST)
To: "James Craig" <jcraig@apple.com>, "Joe D Williams" <joedwil@earthlink.net>
Cc: "Richard Schwerdtfeger" <schwer@us.ibm.com>, "Ian Hickson" <ian@hixie.ch>, public-canvas-api@w3.org, "HTML WG" <public-html@w3.org>
Message-Id: <20100122083032.CBH43506@expms1.cites.uiuc.edu>
James,

What about using the aria-activedescendent attribute on the canvas element to point to the id of the element within the shadow DOM?

Jon


---- Original message ----
>Date: Thu, 21 Jan 2010 16:58:42 -0800
>From: James Craig <jcraig@apple.com>  
>Subject: Re: Canvas Accessibility Next steps  
>To: Joe D Williams <joedwil@earthlink.net>
>Cc: Richard Schwerdtfeger <schwer@us.ibm.com>, Ian Hickson <ian@hixie.ch>, public-canvas-api@w3.org, HTML WG <public-html@w3.org>
>
>
>On Jan 21, 2010, at 3:57 PM, Joe D Williams wrote:
>
>>> The main area yet to be decided is how this should affect the focus model.
>> 
>> I will say there is no <canvas> 2D  focus model except the general element focus model for the canvas element itself. I think the <canvas> element can get focus easily enough? That is all .. literally no focus model for pixels of the bitmap. 
>
>I was referring to the focus model of descendant elements of the canvas, not pixel data in the bitmap. Currently descendant elements cannot receive focus because the elements are not rendered in any context, visual or otherwise. In order to make a "shadow DOM" accessible, this focus model will need to change for all modalities. Those elements will probably need to behave as if they were rendered but not visible.
>
>
Jon Gunderson, Ph.D.
Coordinator Information Technology Accessibility
Disability Resources and Educational Services

Rehabilitation Education Center
Room 86
1207 S. Oak Street
Champaign, Illinois 61820

Voice: (217) 244-5870

WWW: http://www.cita.illinois.edu/
WWW: https://netfiles.uiuc.edu/jongund/www/

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Received on Friday, 22 January 2010 14:31:06 UTC

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