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Re: [css3-mediaqueries] tv and screen media types

From: Rune Lillesveen <rune@opera.com>
Date: Fri, 29 Oct 2010 12:50:46 +0200
To: www-style@w3.org
Message-ID: <op.vlb22wsy8isf1p@id-c1005.oslo.osa>
On Fri, 29 Oct 2010 12:30:10 +0200, David Storey <dstorey@opera.com> wrote:

> On 29 Oct 2010, at 09:45, Rune Lillesveen wrote:
>> On Fri, 29 Oct 2010 09:14:31 +0200, fantasai  
>> <fantasai.lists@inkedblade.net> wrote:
>>> On 10/28/2010 05:41 AM, Rune Lillesveen wrote:

>>>> Pumping up the pixel size of a font based on physical DPI is only  
>>>> needed
>>>> for broken UAs, right? See [1]
>>>> [1] http://www.w3.org/TR/CSS21/syndata.html#pixel-units
>>> Note that definition of the pixel has been superseded.
>>> http://fantasai.inkedblade.net/style/specs/css2.1/px-unit
>>> http://csswg.inkedblade.net/spec/css2.1#issue-149
>> Yes, and with that definition, for tv, the physical units would be  
>> anchored to the reference pixel, making it even less interesting to  
>> change font-sizes based on the resolution media feature.
> Yes, as far as I see it, browsing on TV is a different context. It is  
> less about DPI and resolution, and more about the context you are  
> viewing web pages. Usually in a more social setting. PC and mobile is  
> more one to one where you are close to the screen, while with TV you are  
> about 10 feet away, and often (but not always) i a more social setting  
> where multiple people can see the content. For this you don’t care about  
> the DPI, but more that the user is viewing on a TV (TV media type) and  
> you want to adjust the layout; The most simple being the text size so it  
> is physically big enough to read across the room instead of readable at  
> a few cm from the screen.

That's exactly the point of the reference pixel being defined by a visual  
angle and not resolution. The UA should adjust the CSS pixel size, and  
hence other sizes using the new definition. The author should not need to  

Rune Lillesveen
Senior Core Developer / Architect
Opera Software ASA
Received on Friday, 29 October 2010 10:51:21 UTC

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