- From: <bugzilla@jessica.w3.org>
- Date: Tue, 03 May 2011 13:01:32 +0000
- To: public-html-a11y@w3.org
http://www.w3.org/Bugs/Public/show_bug.cgi?id=12587
--- Comment #2 from Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no> 2011-05-03 13:01:31 UTC ---
Here is the approach which the 'HTML to Platform Accessibility APIs
implementation guide' should take:
1. The AT should first run an algoritm to *calculate* whether the IMG
is presentational or non-presentational
2. If it is non-presentational, AT should select the best text substitute
When it comes to the algorithm to calculate whether IMG is presentational or
not, then I have suggested how it should look in my 'Validity map for <img>':
http://lists.w3.org/Archives/Public/public-html/2011Mar/0750
Two examples from that algorithm:
* If IMG has non-empty @title, then AT should consider
the IMG as non-presentational, regardless of @alt's value.
* Ditto if IMG has @aria-labelledby - regardless of @alt's value.
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Received on Tuesday, 3 May 2011 13:01:34 UTC