RE: aria label on a div alternative text for background images.

[Al wrote] Maybe this is the wrong place to enlighten me, but do you mean
not exposed to people not using AT, or screen readers



To my knowledge aria-label is not used by any AT other than screen
readers.  aria-label does not seem appropriate for an AT such as screen
magnifiers (excluding those with speech).  There are some ARIA attributes
that could be useful to screen magnifiers such as aria-activedescendant
that when used would help screen magnifiers track the programmatic focus.



Other AT such as speech recognition software could use aria-label or other
aria labeling properties on interactive elements to allow voice access to
these elements.  The challenge in this case is letting the speech
recognition user know what text is to activate the item.  For example, if
aria-label is used how might a sighted speech recognition user know what
that aria-label is to be voiced?



You could also argue that it’s the responsibility of the user agent to
replace the background image with the aria-label when high contrast mode is
on.  One challenge with this is that there is often not enough space for
the text to be displayed.   This issue may occur in non-interactive
situations and thus you couldn’t rely on the keyboard or the mouse for that
matter to trigger the content in a tooltip.



IMO, the name of the CSS property is background-image – i.e. it’s meant to
be used as a background – for presentation and not meant to be used to
convey meaning



Jonathan



*From:* Hoffman, Allen [mailto:allen.hoffman@hq.dhs.gov]
*Sent:* Tuesday, May 27, 2014 7:57 AM
*To:* Jonathan Avila; WCAG
*Subject:* RE: aria label on a div alternative text for background images.



Maybe this is the wrong place to enlighten me, but do you mean not exposed
to people not using AT, or screen readers specifically?  Just looking to be
clear in my head if this is AT-type specific or not.  For example can
screen magnifier access the ARIA info?  I have to say that use of IT
without use of programmatically exposed information seems like a completely
different use case than otherwise.







*From:* Jonathan Avila
[mailto:jon.avila@ssbbartgroup.com<jon.avila@ssbbartgroup.com>]

*Sent:* Monday, May 26, 2014 3:32 PM
*To:* WCAG
*Subject:* RE: aria label on a div alternative text for background images.



[David wrote] I was going to provide advice to use aria label  on the div
like this with the view to make a technique for us. <div role=image
class="backgroundimage" aria-label="this is the aria label">Some test
text</a></div>



I agree with Ramon, background images should only be used for presentation
and there must be an equivalent for users with low vision on the screen.
Aria-label is not exposed to users who are not using screen readers.  I
believe use of a background image to convey meaning would be a failure of
SC 1.1.1 unless a visual textual equivalent is provided.



Jonathan



*From:* David MacDonald [mailto:david100@sympatico.ca]
*Sent:* Monday, May 26, 2014 11:46 AM
*To:* WCAG
*Subject:* aria label on a div alternative text for background images.



I've been coming across lots of CSS images in background lately.

   1. I was going to provide advise to use aria label  on the div like this
   with the view to make a technique for us. <div role=image
   class="backgroundimage" aria-label="this is the aria label">Some test
   text</a></div>
   2. But neither NVDA or JAWS most recent versions in most recent versions
   of FF and IE read the aria label. SAFARI and VoiceOver worked however...
   3. I looked it up in the ARIA test harness and the aria label should
   report to the API...

have other people had this experience.

Test page:

http://davidmacd.com/test/aria-label-on-div-surrounding-image-with-alt-text.html



Cheers,

David MacDonald



*CanAdapt* *Solutions Inc.*

Tel:  613.235.4902

LinkedIn <http://www.linkedin.com/in/davidmacdonald100>

www.Can-Adapt.com



*  Adapting the web to all users*

*            Including those with disabilities*



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On Mon, May 26, 2014 at 5:21 AM, Wilco Fiers <w.fiers@accessibility.nl>
wrote:

Regrets for tomorrow's call.

________________________________________
Van: Joshue O Connor [joshue.oconnor@cfit.ie]
Verzonden: vrijdag 23 mei 2014 13:52
Aan: WCAG
Onderwerp: Agenda for 27 May 2014 WCAG call


The WCAG WG will be meeting on Tuesday, 27 May 2014 at 11AM Eastern US
(Length: up to 90 minutes)

Bridge: +1.617.761.6200 (US) Passcode: 9224#
IRC: irc.w3.org<http://irc.w3.org> port: 6665 channel #wai-wcag

Scribe list: https://www.w3.org/WAI/GL/wiki/Scribe_List

Survey/Agenda

1) Brief item on meeting with EOWG regarding LC-2895.

2) Brief update on progress regarding the review of EO accessibility
tutorials.

3) Action item purge. Can everyone please have a look at any action
items with their names on them and close any that you have either dealt
with or have been over taken by events. Any action items that you are
not sure about please let us know.

http://www.w3.org/WAI/GL/track/actions/

Note: You can use ‘My Tracker’ to see any outstanding action items that
are yours.

4) Continuation from this last weeks survey: Starting at item 2
https://www.w3.org/2002/09/wbs/35422/20140520/

5) Survey: Proposed responses to public comments:
https://www.w3.org/2002/09/wbs/35422/2705_2014/

6) Every week we will spend some time doing a review of open issues/actions
http://www.w3.org/WAI/GL/track/issues/

7) There are still some comments that need responses (feel free to pick
one):

https://www.w3.org/WAI/GL/wiki/Comments_Needing_Responses

--
Joshue O Connor/Andrew Kirkpatrick
WCAG working group co-chairs