Re: Draft of proposed CSS Media Features (Was: ACTION-50: Prepare a list of user context properties that might be able to be covered by media queries (Independent User Interface Task Force)

+ PFWG and Cynthia as an FYI

Following up on this since there was no objection (or other response since April). Since these make more sense as media queries than IndieUI User Context properties, I’m going to send this list for discussion to the CSS Working Group.

On Apr 10, 2013, at 4:37 PM, James Craig <jcraig@apple.com> wrote:

> Here's the list of media features we could propose to the CSSWG. Captions/subtitles might be another, but I'm not sure it fits into media queries quite as cleanly as these.
> 
> base-color
> base-background-color
> base-font-size
> base-letter-spacing
> base-line-height
> base-word-spacing
> display-colors-inverted
> display-contrast-increased
> minimum-font-size
> 
> EXAMPLE:
> 
> In this example, the hardware display rendering is inverted, so the web app could double-invert foreground image and video content, which usually looks strange while inverted. This would leave text foreground color, all background colors, and background styles inverted to adhere to user setting.
> 
> @media (display-colors-inverted: inverted) {
> 	img, video {
> 		filter: invert(100%);
> 	}
> }
> 
> On Apr 10, 2013, at 2:54 PM, Independent User Interface Task Force Issue Tracker <sysbot+tracker@w3.org> wrote:
> 
>> ACTION-50: Prepare a list of user context properties that might be able to be covered by media queries (Independent User Interface Task Force)
>> 
>> http://www.w3.org/WAI/IndieUI/track/actions/50
> 
> 
> PROPOSED VALUES:
> 
> /* display settings */
> display-colors-inverted: inverted | off;
> display-contrast-increased: <percentage>;
> 
> /* color settings */
> base-color: <color>;
> base-background-color: <color>;
> 
> /* type and font defaults */
> minimum-font-size: <size>;
> base-font-size: <size>;
> base-letter-spacing: <number>; /* unitless multiplier of current em value? */
> base-word-spacing: <number>; /* unitless multiplier of current em value? */
> base-line-height: <number>; /* unitless multiplier of current em value? */
> 
> Relating to the Microsoft media feature proposal previously mentioned by PFWG to the CSSWG.
> 
>> -ms-high-contrast: active | black-on-white | white-on-black | none;
>> http://msdn.microsoft.com/en-us/library/windows/apps/hh465764.aspx
> 
> /* adjusting to cover both the Microsoft proposal as well as other platforms that have a slider value for color variants */
> 
> -ms-high-contrast: active; would be equivalent to:
> 	display-contrast-increased: 100%;
> 
> -ms-high-contrast: black-on-white; would be equivalent to:
> 	display-contrast-increased: 100%;
> 	base-color: black;
> 	base-background-color: white;
> 
> -ms-high-contrast: white-on-black; would be equivalent to:
> 	display-contrast-increased: 100%;
> 	base-color: white;
> 	base-background-color: black;
> 
> -ms-high-contrast: none; would be equivalent to the default value:
> 	display-contrast-increased: 0%;
> 
> 
>

Received on Friday, 27 September 2013 22:01:10 UTC