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Re: [css-device-adapt] Number or percentage values for zoom values

From: Rune Lillesveen <rune@opera.com>
Date: Fri, 01 Mar 2013 18:38:04 +0100
To: "Simon Sapin" <simon.sapin@exyr.org>, "www-style list" <www-style@w3.org>
Message-ID: <op.ws929qhz8isf1p@id-c1005.oslo.osa>
On Fri, 01 Mar 2013 17:29:05 +0100, Simon Sapin <simon.sapin@exyr.org>  

> Le 01/03/2013 17:08, Rune Lillesveen a écrit :
>> currently both <number> and <percentage> values are allowed for the
>> various zoom descriptors in @viewport. A long time ago, an issue was
>> raised about this ("Issue 4: Should both numbers and percentages be
>> allowed?"). According to the complaint there is no tradition in CSS for
>> having two different ways of expressing the same value.
> Well, font-size and line-height both accept percentages that do the same  
> as the em unit. Obviously we can’t change these now, but *maybe* this is  
> a not pattern we want to repeat with new features?

I don't know.

>> Looking at various other specs I'm leaning towards keeping <percentage>
>> and drop <number> for zoom values. Opinions?
> <percentage> for zoom sounds good, but this is not a strong opinion.
> 'opacity' does uses <number> where <percentage> would also make sense,  
> but again, maybe it’s an exception.

A point in favor of allowing <number>s is that authors are used to that  
 from <meta name="viewport">.

Rune Lillesveen
Received on Friday, 1 March 2013 17:38:36 UTC

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