Re: Comments on HTML5 Image Description Extension (longdesc)

Have any of these proposals been captured in bugzilla?

- Sam Ruby

On 08/21/2014 10:53 AM, Joanmarie Diggs (by way of Liam R E Quin 
<liam@w3.org>) wrote:
> While Igalia shares many of the concerns raised by Apple [1] and has
> similar doubts about the benefits of longdesc, we will not formally
> object to advancing the HTML Image Description document along the REC
> track. However, if longdesc does continue to advance, we have a number
> of concerns, many of which I identified whilst implementing support for
> longdesc in the Orca screen reader for GNU/Linux desktop environments.
> Below please find text Igalia would like you to consider incorporating
> into the specification.
>
> =====================================
> Proposed Additions to "3.0.2 Authors"
> =====================================
>
> *  Authors MUST NOT rely solely on longdesc as the means to provide
>     access to information which is essential for the user.
>
> *  When the description is part of the target document, authors SHOULD
>     NOT rely upon assistive technologies to constrain presentation of the
>     description to that fragment. If such restriction is essential,
>     authors MUST take additional means to mark surrounding content as
>     hidden.
>
> =======================================
> Proposed Changes to "3.0.3 User Agents"
> =======================================
>
> Current:
>
>      If the longdesc value is valid, User agents must make the link
>      available to all users through the regular user interface(s).
>
> Issue:
>
>      One way to achieve the above is via the right-click menu. Firefox
>      does this. It works well for sighted users who can use a mouse.
>      It works well with the Orca screen reader which makes it possible
>      for the user to move to the image and then synthesize a right
>      click. But the image with a longdesc is likely not going to be
>      focusable, so keyboard-only users cannot navigate to it, which
>      is necessary prior to bringing up the context menu via the keyboard.
>
> Proposed modification to the above:
>
>      ... including users who cannot use a mouse and do not use any
>      assistive technologies.
>
> Other additions:
>
>      If the longdesc value is valid, user agents MUST make activation
>      of the link possible via the platform's accessible action interface
>      on platforms where such an interface is present.
>
>      When the description is only part of the target document, user
>      agents MUST provide a means to return to the image being described
>      via the platform's accessibility API.
>
> ============
>
> Thank you in advance for your time and consideration of these issues.
> --Joanmarie Diggs and Alejandro Piņeiro
>
>
> [1] http://lists.w3.org/Archives/Public/public-html-admin/2014Aug/0028.html
>
>

Received on Monday, 25 August 2014 14:54:22 UTC