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Re: [media-queries] and Ambient Light Sensor API

From: Marcos Caceres <w3c@marcosc.com>
Date: Tue, 21 Aug 2012 21:17:09 +0100
Message-Id: <4236C5F1-C640-4744-8033-DF0A7315CEC4@marcosc.com>
Cc: Daniel Glazman <daniel.glazman@disruptive-innovations.com>, "public-device-apis@w3.org" <public-device-apis@w3.org>, "www-style@w3.org" <www-style@w3.org>, "dougt@mozilla.com" <dougt@mozilla.com>
To: "Tab Atkins Jr." <jackalmage@gmail.com>

On 21 Aug 2012, at 19:31, "Tab Atkins Jr." <jackalmage@gmail.com> wrote:

> On Tue, Aug 21, 2012 at 7:04 AM, Daniel Glazman
> <daniel.glazman@disruptive-innovations.com> wrote:
>> Hello Doug, public-device-apis@w3.org and www-style@w3.org
>> Looking at the WD of Ambient Light Sensor API [1] on one hand and at
>> the IDPF Alternate Style Tags spec for EPUB3 by Fantasai (in particular
>> the 'day' and 'night' values) [2] on the other, I really wonder if that
>> API should not have its Media Queries [3] counterpart...
>> For instance:
>> feature  'ambient-light-sensor'
>> Value: <integer>
>> Applies to: visual media types
>> Accepts min/max prefixes: no
>>  Value will be 1 if an ambient light sensor is available on the device
>>  and 0 if not.
>> feature 'ambient-light-level'
>> Value: <number>
>> Applies to: visual media types
>> Accepts min/max prefixes: YES
>>  This media feature describes the ambient light level in lux. The
>>  specified <number> cannot be negative.
> I'd rather define a 'lux' unit if we're doing this.  Also, I agree
> with others that having some keyword values is useful.  I don't know
> how many levels would actually be useful, though.  ePub apparently
> does "night" and "day".  We can either use those, or define a
> different pair, like 'dim' and 'bright'.
> I'd prefer we not introduce a half-dozen or more keywords without
> evidence that they're useful.  I think most of the time you'll only
> want to reduce the brightness of your page in dim light, but not do a
> lot of gradations.

Agree. Lots of values seems excessive. 

> ~TJ
Received on Tuesday, 21 August 2012 20:17:48 UTC

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