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Re: Proposed requirements for checkpoint 6.4 (Response Required)

From: Ian B. Jacobs <ij@w3.org>
Date: Wed, 31 Jul 2002 16:59:34 -0400
Message-ID: <3D484FB6.8000606@w3.org>
To: Richard Schwerdtfeger <schwer@us.ibm.com>
CC: "Hansen, Eric" <ehansen@ets.org>, "'Jon Gunderson'" <jongund@uiuc.edu>, w3c-wai-ua@w3.org, w3c-wai-ua-request@w3.org

Richard Schwerdtfeger wrote:
> We need to have information about:
> object 's bounding rectangle in screen coordinates

That's covered by the proposal ("bounding dimensions" just
in case it's not a rectangle).

> bounding rectangle of active elements withing an image map in screen
> coordinates
> These would assist magnification software in knowing where to focus on
> elements.

Checkpoint 6.6 requires notification of changes, including changes
to focus. So through 6.6, a screen magnifier should know which
element has focus.

Checkpoints 6.5 and 6.6 do not say explicitly: You must be able to 
find out which element has focus. However, the definition of
"user agent user interface" includes selection and focus explicitly.
I think no change is required to accomplish Rich's goal. However,
if people feel it would be clearer to say in 6.5 "including
selection, content focus, and user interface focus", that's fine
with me. Furthermore, it would make 6.5 and 6.6 almost identical.

  - Ian

>>-----Original Message-----
>>From: Jon Gunderson [mailto:jongund@uiuc.edu]
>>Sent: Wednesday, July 31, 2002 3:40 PM
>>To: w3c-wai-ua@w3.org
>>Subject: Proposed requirements for checkpoint 6.4 (Response Required)
>>Ian and I have been discussing the lack of requirements in Checkpoint
>>6.4.  This kind of sticks out in a document that has specific
>>for almost all of the other checkpoints.  The checkpoint
>>point would have a
>>total of 3 required provisions (2 more than now) and 2 optional
>>provisions.  The changes were based on information gathered from AT
>>developers and the working group.
>>Please RESPOND as soon as possible to this e-mail on whether
>>you agree or
>>disagree with the changes.
>>I would like to proposed the following change to checkpoint 6.4:
>>Checkpoint 6.4 Programmatic access to information about
>>rendered content..
>>Provision 1: Make available bounding dimensions and location
>>of rendered
>>graphical objects
>>Provision 2: Provide access to the following information
>>about each piece
>>of rendered text:
>>a. font-family
>>b. font-weight (e.g. bold)
>>c. font-style (e.g. italic)
>>d. font-size
>>e. text decorations (e.g. underline, strike through)
>>g. foreground color
>>h. background color
>>Provision 3: As part of satisfying the provisions of this checkpoint,
>>implement at least one API according to the API cascade described in
>>provision two of checkpoint 6.3.
>>Note(1): The API used to provide access to visually rendered
>>should provide access to both structured information and pixel-level
>>information. User agents should also provide information about the
>>correspondence (in both directions) between locations in content and
>>related locations in the rendering structure."
>>Note(2): The user agent should also provide access to
>>information about
>>each graphical object, such as its role, a text description and other
>>useful information in describing the state and content of the object.
>>Jon Gunderson, Ph.D., ATP
>>Coordinator of Assistive Communication and Information Technology
>>Division of Rehabilitation - Education Services
>>College of Applied Life Studies
>>University of Illinois at Urbana/Champaign
>>1207 S. Oak Street, Champaign, IL  61820
>>Voice: (217) 244-5870
>>Fax: (217) 333-0248
>>E-mail: jongund@uiuc.edu
>>WWW: http://www.staff.uiuc.edu/~jongund
>>WWW: http://www.w3.org/wai/ua
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Ian Jacobs (ij@w3.org)   http://www.w3.org/People/Jacobs
Tel:                     +1 718 260-9447
Received on Wednesday, 31 July 2002 17:03:01 UTC

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