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Re: [css3-mediaqueries] DPI in resolution media queries

From: Lea Verou <leaverou@gmail.com>
Date: Wed, 15 Feb 2012 18:48:02 +0200
Message-ID: <4F3BE1C2.6090303@gmail.com>
To: Sylvain Galineau <sylvaing@microsoft.com>
CC: www-style list <www-style@w3.org>
On 15/2/12 18:34, Sylvain Galineau wrote:
> It'd be easier to understand the mistake(s) given use-cases. Or 
> better, links to sites that depend on Gecko's behavior as you 
> understand it?
The mistake is that there is *no way* to define something as X physical 
inches in CSS. Currently, lengths defined in any other unit will end up 
being huge in one screen with huge DPI and tiny in another. Resolution 
media queries were a way to solve this.
As for sites that depend on (or even use) Gecko's behavior, it's 
unlikely that they exist, since WebKit does not support resolution media 
queries and Presto doesn't support them properly (always assumes a 
resolution of 96dpi). Not sure what Trident does. I'm not saying this 
change shouldn't be done for backwards compatibility reasons. I'm saying 
it shouldn't be done because it makes UAs implement something that 
authors will likely never use like that.
Received on Wednesday, 15 February 2012 16:48:36 UTC

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