[Accessibility] Text attributes issues
William.Walker at Sun.COM
Tue Dec 9 08:14:28 PST 2008
Thanks for doing this analysis and writeup. Very useful. As we saw
earlier this summer, normalization of text attributes is important
across toolkits (e.g., GTK+, Gecko, Java, OOo) as well as across platforms.
>> Will, I don't know what to say about the Linux spec other than I know
>> there is some pressure from Marco and Aaron to change it.
It would be great if Aaron and Marco could come up with a list of
proposed changes. Are they working on this?
Pete Brunet wrote:
> I should have cc'd the open a11y list too...
> ----- Forwarded by Pete Brunet/Austin/IBM on 12/09/2008 09:25 AM -----
> From: Pete Brunet/Austin/IBM at IBMUS
> To: Accessibility-ia2 at lists.freestandards.org
> Cc: Willie Walker <William.Walker at sun.com>
> Date: 12/09/2008 01:29 AM
> Subject: [Accessibility-ia2] text attributes issues
> Sent by: accessibility-ia2-bounces at lists.linux-foundation.org
> Aaron, This is the list of text attributes issues:
> Existing entries in Mozilla's bugzilla
> * text-indent and text-align should really be object attributes -
> * font-size text attribute should be exposed in pt units -
> * IAccessibleText::caretOffset should return -1 if the system caret
> is not currently with in that particular object -
> Other Mozilla issues
> * The Mozilla spec for the language attribute refers to IETF RFC
> 1766 not IETF RFC 3066 (which obsoletes 1766). The Mozilla spec
> probably needs to be changed.
> * In the Mozilla spec, font-weight has values of bolder, lighter,
> and inherit while IA2 doesn't. These probably need to be removed
> from the Mozilla spec.
> * auto-generated and writing-mode aren't documented. You mentioned
> there were bugs opened for this but I couldn't find the bug numbers.
> IA2 issues
> * text-position with no offset uses the term "baseline" vs 0. It
> looks like IA2 should reference the CSS2 vertical-align spec, not
> the ODF spec.
> o Do you want to change the name of this attribute to
> o I propose the value list contain only baseline, sub, and
> super and not the rest (top, text-top, middle, bottom,
> text-bottom, <percentage>, <length>, inherit). I don't
> think an end user will care about the nuances of exactly how
> far above or below the baseline the text is.
> o I propose we drop the existing second parameter in the IA2
> spec which specifies the size of the font of the
> sub/subscript. That can be covered via the font-size
> o The default can be baseline. (It was 0%.)
> Other comments
> * In the Mozilla spec, many of the attributes (like font-family,
> font-style, and font-size) refer to CSS 1, 2.1, and 3 while IA2
> only refers to CSS 2. I'd prefer to keep the IA2 spec referencing
> CSS2 because 2.1 and 3 are not at Recommendation state yet (as far
> as I can tell).
> I'd appreciate it if Marco could take a look at the two specs and see if
> he can spot any issues.
> Will, I don't know what to say about the Linux spec other than I know
> there is some pressure from Marco and Aaron to change it. Are there any
> issues with using the IA2 spec? Note that the IA2 spec is mostly based
> on CSS2, plus one case each of an attribute based on WAI-ARIA and XSL
> 1.1. However, there are several attributes based on ODF which are
> needed to provide access to ODF docs:
> text-line-through-mode, text-line-through-style, text-line-through-text,
> text-line-through-type, text-line-though-width, text-outline,
> text-shadow, text-underline-mode, text-underline-style,
> text-underline-type, text-underline-width
> I didn't mention text-position because, as mentioned above, I'm
> proposing that we refer to the CSS vertical-align spec instead of the
> ODF spec. (I've also asked the ODF office list why they are using a
> non-standard attribute when text-position is so close.
> Pete Brunet*
> IBM Accessibility Architecture and Development
> 11501 Burnet Road, MS 9022E004, Austin, TX 78758
> Voice: (512) 286-5485, Cell: (512) 689-4155
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