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Re: PF Action-1375 re CSS Due Wednesday's PF Telecon

From: James Nurthen <james.nurthen@oracle.com>
Date: Tue, 18 Feb 2014 14:48:44 -0800
Message-ID: <5303E34C.6050803@oracle.com>
To: Janina Sajka <janina@rednote.net>
CC: James Craig <jcraig@apple.com>, Cynthia Shelly <cyns@exchange.microsoft.com>, public-pfwg@w3.org
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

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