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Re: simultaneous rendering of image and its descriptor

From: Jan Richards <jan.richards@utoronto.ca>
Date: Thu, 25 Oct 2007 22:50:51 -0400
Message-ID: <4721560B.5040708@utoronto.ca>
To: "Gregory J. Rosmaita" <oedipus@hicom.net>
CC: w3c-wai-ua@w3.org

Hi Gregory,

Why just the "long descriptor"? What about short descriptors? Would 
providing these via an image properties dialog be sufficient?


Gregory J. Rosmaita wrote:
> aloha!
> i'm not sure whether the following falls under 3.6 or 3.7 or in a 
> checkpoint of its own:
> 1. Allow configuration to allow simultaneous rendering of an image and 
> its long descriptor
> use cases:
> 1. user with severely restricted viewport needs guidance through the flow 
> of the image; 
> 2. are users with cognitive processing issues who will require guidance 
> through the detailed description
> (more use cases at:
> http://esw.w3.org/topic/HTML/LongdescRetention
> the page name is misleading, as the actual title of the page is 
> "Image Equivalent Content", the "Requirement" of which is recorded thus:
> "In situations where images are not available to the user (because of 
> disability, choice, or UA limitation) there is a need for a mechanism 
> that presents equivalent content to the user, either as an alternative to 
> the image or in a side-by-side exposition. Equivalent content is not, nor 
> should it be, and either/or proposition, and its method of exposition 
> should be subject to user control, as some user groups may need both the 
> image and its detailed description in order to make sense of the image 
> or  in the case of a user with an extremely small viewport  to follow 
> the image's flow."
> and, yes, if that sounds familiar, its because i wrote it)
> as for the "doing more" portion, here is what i verbally proposed at 
> today's telecon:
> --- DOING MORE ---
> Support for ARIA concept of "context menus" for objects/elements:
> 1. expose entire range of possibilities available to the user via a 
> context menu
> 2. limit range of possibilities to user-defined pre-selection (via 
> preferences)
> 3. exclude/include content-types/formats through UA's user preferences
> No matter which setting the user sets as the default, there must be a 
> mechanism that enables the exposure of the full range of possibilities -- 
> even when a user has pre-set what content-types to include, as the author 
> may not have provided any conditional/alternative content that meets the 
> user's pre-set criterion.  It is for this reason that support for ARIA 
> context menus is strongly encouraged, as they can display the entire 
> range of controls and options available to the end user.
> --- END DOING MORE ---
> Note: the first instances of the string "context menus" should link to 
> the ARIA document or the ARIA Best Practices document (which currently 
> exists only on the ESW wiki, but which is being pulled together into a 
> W3C note)
> Relevant ARIA Properties:
> 1. latest PF Editor's draft (member-confidential)
>     http://www.w3.org/WAI/PF/Group/adaptable/#haspopup
>     http://www.w3.org/WAI/PF/Group/adaptable/#controls
>     http://www.w3.org/WAI/PF/Group/adaptable/#owns
> 2. latest public draft
>     http://www.w3.org/TR/2007/WD-aria-state-20071019/#haspopup
>     http://www.w3.org/TR/2007/WD-aria-state-20071019/#controls
>     http://www.w3.org/TR/2007/WD-aria-state-20071019/#owns
>   ------------------------------------------------------------------
>   "Kill the rattlesnake that gives no warning; spare the one that 
>    does."                                    -- Lenni Lenape proverb
>   ------------------------------------------------------------------
>                 Gregory J. Rosmaita <oedipus@hicom.net>
>   Camera Obscura:           http://www.hicom.net/~oedipus/index.html
>   Oedipus' Online Complex:  http://my.opera.com/oedipus/
>   UBATS - United Blind Advocates for Talking Signs: http://ubats.org
>   ------------------------------------------------------------------

Jan Richards, M.Sc.
User Interface Design Specialist
Adaptive Technology Resource Centre (ATRC)
Faculty of Information Studies
University of Toronto

   Email: jan.richards@utoronto.ca
   Web:   http://jan.atrc.utoronto.ca
   Phone: 416-946-7060
   Fax:   416-971-2896
Received on Friday, 26 October 2007 02:50:54 UTC

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