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Fwd: UAAG 2.0 Working Drafts Feedback

From: Jim Allan <jimallan@tsbvi.edu>
Date: Tue, 30 Oct 2012 09:59:30 -0500
Message-ID: <CA+=z1W=zCTAxsVg=rRMTrWhaoP243RhENOXdoSr=eqS1qbX0eA@mail.gmail.com>
To: WAI-ua <w3c-wai-ua@w3.org>
from the comments list

---------- Forwarded message ----------
From: Thomas Sisson <thomas.sisson.1@gmail.com>
Date: Thu, Oct 25, 2012 at 9:36 PM
Subject: UAAG 2.0 Working Drafts Feedback
To: public-uaag2-comments@w3.org

Visual adjustments made by the user to make content easier to read
should not break the intent of the page or make the content unusable
or invisible.

For example, the current approach to make pages more visually
accessible when content is too visually distracting or when
backgrounds and content lack sufficient contrast is an all or nothing
approach. Disabling styles is the common method that gives the user a
choice between unreadable pages and black and white pages. A method
should be available to permit visual contrast independent of disabling
all styles and backgrounds. (I had proposed a CSS contrast user style
that may help with this issue.)

Another example text resizing when scrolling is disabled or content is
clipped. When content is clipped to a specific width or height, the
designer bases that on assumed text size. (This is apparent to some
users because Microsoft and non-Microsoft environments have a
different base font size.) When resizing text, the authors intent is
broken, causing text to run off the expected background which may make
it partly unreadable. Resizing content breaks the authors expectations
and causes content to disappear. When scrollbars are also disabled,
content is no longer available.

A specific example is the "HTML5" canvas overlay. Web authors often
create these substitutions for pop-up windows that require input. When
text is resized, the overlay becomes larger than the window. If that
overlay is not permitted to scroll, the user cannot perform the action
required. Worst yet, the mechanism for canceling the overlay may also
be unavailable.

I hope this is the type of input that is requested, and that the
committee finds it useful.

Thomas Sisson

Jim Allan, Accessibility Coordinator & Webmaster
Texas School for the Blind and Visually Impaired
1100 W. 45th St., Austin, Texas 78756
voice 512.206.9315    fax: 512.206.9264  http://www.tsbvi.edu/
"We shape our tools and thereafter our tools shape us." McLuhan, 1964
Received on Tuesday, 30 October 2012 15:00:03 UTC

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