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Re: [css3-mediaqueries] feedback on device-aspect-ratio, aspect-ratio and orientation

From: Anne van Kesteren <annevk@opera.com>
Date: Wed, 03 Dec 2008 17:32:13 +0100
To: "Sylvain Galineau" <sylvaing@microsoft.com>, "Dean Jackson" <dino@apple.com>, "Bert Bos" <bert@w3.org>
Cc: Www-style <www-style@w3.org>
Message-ID: <op.ullhjzaa64w2qv@annevk-t60.oslo.opera.com>

On Wed, 03 Dec 2008 17:23:37 +0100, Sylvain Galineau  
<sylvaing@microsoft.com> wrote:
>> This syntax has been stable for over six and half year (for
>> device-aspect-ratio). Do we really want to fiddle with that? (There are
>> two implementations too.)
> Isn't HTML5 going to stick to floats for the video element's pixel  
> aspect ratio ? [1] Does SVG ever need to define this as well ? There may  
> be very good reasons to express aspect ratios in different ways based on  
> industry practice, data formats, the unit being described, existing  
> implementations etc. I have no opinion on which format is better but I'm  
> asking if specs should try to align as authors' lives may be marginally  
> more difficult if some aspect ratios must be set as floats and others as  
> fractions.
> [1]  
> http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2008-October/016588.html

See e.g. http://www.w3.org/mid/490DF583.20807@mit.edu (using a float  
versus doing equality testing with it are different things).

I talked it over with HÃ¥kon today and the person responsible for  
implementing Media Queries in Opera. We feel that the 'orientation'  
feature is actually sufficient and we could do away with 'aspect-ratio'  
and 'device-aspect-ratio'. The use cases for not caring so much about  
screen size, but wanting to know something about the aspect ratio seem to  
be about orientation.

Are there strong reasons for keeping the aspect ratio related features  
other than 'orientation'?

Anne van Kesteren
Received on Wednesday, 3 December 2008 16:33:04 UTC

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