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UAWG Action Item: Proposal on 3.1 Background Images

From: Jan Richards <jan.richards@utoronto.ca>
Date: Fri, 13 Jul 2007 15:17:06 -0400
Message-ID: <4697CFB2.808@utoronto.ca>
To: WAU-ua <w3c-wai-ua@w3.org>

> ACTION: JR to Proposal to limit "background image" to body of document

What do people think of taking a viewport approach?


3.1 Toggle background images (P1) Techniques for checkpoint 3.1

- Allow configuration not to render IMAGES THAT ARE RENDERED BENEATH ALL 
OF THE OTHER CONTENT RENDERED IN A VIEWPORT.

Sufficient techniques

1. ALLOWING users to turn off images THAT THE USER AGENT RECOGNIZES 
WOULD BE RENDERED BENEATH ALL OF THE OTHER CONTENT RENDERED IN A VIEWPORT.



Cheers,
Jan





ORIGINAL WORDING 
(http://www.w3.org/TR/WAI-USERAGENT/guidelines.html#gl-feature-on-off)

3.1 Toggle background images (P1) Techniques for checkpoint 3.1

- Allow configuration not to render background image content.

Sufficient techniques

1. The user agent may satisfy this checkpoint with a configuration to 
not render any images, including background images. However, user agents 
should satisfy this checkpoint by allowing users to turn off background 
images alone, independent of other types of images in content.

Normative inclusions and exclusions

1. This checkpoint must be satisfied for all implemented image 
specifications; see the section on conformance profiles.
2. When configured not to render background images, the user agent is 
not required to retrieve them until the user requests them explicitly. 
When background images are not rendered, user agents should render a 
solid background color instead; see checkpoint 4.3 for information about 
text colors.
3. This checkpoint only requires control of background images for 
"two-layered" renderings, where the background is considered the first 
layer and everything rendered above it is considered the second layer.
4. Conformance profile labels: Image
Received on Friday, 13 July 2007 19:16:24 GMT

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