- From: Christophe Strobbe <christophe.strobbe@esat.kuleuven.be>
- Date: Sat, 21 Apr 2007 00:18:54 +0200
- To: w3c-wai-gl@w3.org
- Message-Id: <6.2.5.6.2.20070420230204.033a4c30@esat.kuleuven.be>
Hi, Two weeks ago, I got an action item to "walk the AsCT algorithm" for CSS. The first condition for CSS to be counted as an accessibility-supporte content technology is that it should be supported by assistive technology. For this purpose, I looked for test results for CSS support in AT. I have collected my current findings in the attachment (ScreenReaderCSSSupport.html). The test that I found date from 2 to 4 years ago and don't cover certain areas of CSS very well (I hoped to find more and clearer test resuls for CSS layouts and for image replacement, for example). I am not ready to draw conclusions from these tests. There is also an API for CSS (SAC: Simple API for CSS: see http://www.w3.org/Style/CSS/SAC/ and http://www.w3.org/TR/SAC/), but this is not the same thing as the "accessibility API" mentioned in the conformance section. The second condition for CSS to be counted as an AsCT is that accessibility-supported host user agents for the technology are available to users. CSS is "supported natively in widely-distributed host user agents that are also accessibility-supported": * Internet Explorer supports CSS (although not fully, like many other browsers) and is accessible with several screen readers on Windows; * Firefox supports CSS and can be accessed with Window-Eyes (5.5+) and JAWS (7.1+) on Windows, and possibly also with Orca on GNOME desktops (haven't checked the details, e.g. need for FireVox and self_voicing.py, and there are no test results for this combination in the attachment mentioned above) and with LSR/Linux Screen Reader on GNOME (haven't checked the details; LSR is shipped with the Ubuntu distro); * Safari supports CSS and can be accessed with VoiceOver on Mac OS X. So some details still need to be filled in. (Also, it is not sufficient to look only at JAWS, Window-Eyes and IBM HomePage Reader because the most commonly used screen readers/talking browsers for Windows in a country like the US is not necessarily the most commonly used screen reader/talking browser elsewhere.) The above focuses on screen readers, but other AT also need to be taken into consideration, e.g. talking browsers, TTS used by some people with dyslexia, and zoom software. Even though this survey is not as complete as I would like, I am sending it now because I will need to concentrate on other things until the middle of next week. Best regards, Christophe -- Christophe Strobbe K.U.Leuven - Departement of Electrical Engineering - Research Group on Document Architectures Kasteelpark Arenberg 10 - 3001 Leuven-Heverlee - BELGIUM tel: +32 16 32 85 51 http://www.docarch.be/ Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
Attachments
- text/html attachment: ScreenReaderCSSSupport.html
Received on Friday, 20 April 2007 22:19:27 UTC