- From: James Nurthen <james.nurthen@oracle.com>
- Date: Tue, 18 Feb 2014 14:48:44 -0800
- To: Janina Sajka <janina@rednote.net>
- CC: James Craig <jcraig@apple.com>, Cynthia Shelly <cyns@exchange.microsoft.com>, public-pfwg@w3.org
- Message-ID: <5303E34C.6050803@oracle.com>
The note at https://lists.w3.org/Archives/Member/wai-liaison/2010Dec/att-0003/css_response_from_pf.html states the following agreements. I have added comments inline starting with JN: The PFWG accepts the disposition of the comment, with the following additional steps to be taken: * use content property with :before and :after for foreground image JN: The definition of "background-image" includes the following text. This seems acceptable to me. For accessibility reasons, authors should not use background images as the sole method of conveying important information. SeeWeb Content Accessibility Guideline F3 <http://www.w3.org/TR/2008/NOTE-WCAG20-TECHS-20081211/F3>[WCAG20] <http://www.w3.org/TR/2014/WD-css3-background-20140204/#ref-WCAG20>. Images are not accessible in non-graphical presentations, and background images specifically might be turned off in high-contrast display modes. Note that stylistic foreground images can be provided in CSS with thecontent <http://www.w3.org/TR/CSS21/generate.html#content>property. (Semantically-important foreground images should be provided in the document markup, e.g. with the <img> tag in HTML.) * add text about using this for sprites JN: While not specifically mentioning sprites it does say "Media fragments <http://www.w3.org/TR/media-frags/#naming-space>can be used to display a portion of an image. TheCSS Images <http://www.w3.org/TR/css3-images/>module will provide fallback syntax for image formats and include additional controls for image display." * known dependency on media fragments JN: See above * PFWG will create a WCAG technique for this JN: not yet done - I have added it to https://www.w3.org/WAI/GL/wiki/Techniques/CSS If someone wants to start this it would be welcomed by WCAG. * additional work to be done in CSS 3 timeframe, so continued coordination o expand scope of content property to apply to all elements, not just :before and :after JN: The last trace of content I can find is in http://www.w3.org/TR/CSS21/generate.html#content I have no idea where it has moved to in any subsequent specs. Can anyone find it? (Note - CSS really needs a search to allow me to find the latest definition of something within their numerous specs) o support for media fragments JN: I don't think the media fragments spec states anything about where this is supported - some testing would have to be done to find out the current status/ o defined fallback to the actual element JN: No idea of the status here. Anyone? Regards, James On 2/18/2014 10:19 AM, Janina Sajka wrote: > Hi, James Nurthen: > > With CC's to James Craig and Cynthia Shelly as you were also named in this > action. > > This is a reminder ... > > I'm working on Wednesday's PF agenda and note you had an action-1375 due this > week to investigate what, if anything, came from a PF formal objection > from 2010 on CSS specs. > https://www.w3.org/WAI/PF/Group/track/actions/1375 > > Discussion leading to this action is in the 5 February PF minutes: > https://www.w3.org/2014/02/05-pf-minutes.html > > > Janina >
Received on Tuesday, 18 February 2014 22:50:11 UTC