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Re: Proposal for ambient light

From: Dave Raggett <dsr@w3.org>
Date: Mon, 28 Nov 2011 13:12:56 +0000
Message-ID: <4ED388D8.6000304@w3.org>
To: public-device-apis@w3.org
On 28/11/11 11:10, Dominique Hazael-Massieux wrote:
> Hi,
>
> During our TPAC F2F, I took an action item (ACTION-467) to make a
> concrete proposal for accessing information about the current ambient
> light for a given device.
>
> Part of the discussion during TPAC was that particular item might be
> better served by a CSS media query feature rather than an JavaScript API
> — at least, the use cases that involved adapting e.g. the colors of the
> user interface would be more logically served via such an approach.
>
> This would mean adding a "ambientlight" feature with min/max prefixes,
> that would take values in SI lux units.
>
>          <link rel="stylesheet" media="screen" href="default.css">
>          <link rel="stylesheet" media="screen and (min-ambientlight:
>          30000)" href="high-contrast.css">
>
> If the group thinks that's a reasonable approach, DAP could propose to
> start a joint WD with the CSS WG.

A similar rule might apply to high ambient light levels where it is hard 
to make out the details on the screen (e.g. bright sunlight and my Nexus 
S as I discovered yesterday in a country walk).

What about being able to control the screen luminosity, perhaps as a new 
CSS property?

-- 
Dave Raggett<dsr@w3.org>  http://www.w3.org/People/Raggett
Received on Monday, 28 November 2011 13:13:23 GMT

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