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Re: [css3-regions] issue: is first region initial containing block

From: Vincent Hardy <vhardy@adobe.com>
Date: Fri, 3 Feb 2012 05:11:54 -0800
To: Anton Prowse <prowse@moonhenge.net>
CC: "www-style@w3.org" <www-style@w3.org>
Message-ID: <186AA1F4-D0B0-4525-BE6D-7280F3506D79@adobe.com>
Hi Anton, all,

What about the following wording instead:

====
The edges of the first region in a region chain associated with a named flow establish 
        the rectangle that is the 
        <a href="http://www.w3.org/TR/CSS2/visudet.html#containing-block-details">containing block</a> 
        used for absolutely positioned elements in the name named flow which do not have an 
        ancestor with a 'position' of 'absolute', 'relative' or 'fixed' (see [[!CSS21]]) . That first region rectangle
        is used as the containing block instead of the initial containing block.
====

See: http://bit.ly/zFWXLc

Vincent

On Feb 3, 2012, at 12:20 PM, Anton Prowse wrote:

> From another thread entitled "[css3-regions] regions forming stacking 
> contexts" [http://lists.w3.org/Archives/Public/www-style/2012Feb/0146.html]:
> 
> On 03/02/2012 08:07, Vincent Hardy wrote:
> 
>> Regarding the initial containing block, I am not sure what is
>> missing from the spec. can you clarify? Section 4.1 is explicit:
>> 
>> "The edges of the first region in a region chain associated with a
>> named flow establish the rectangle that is the initial containing
>> block of the named flow."
> 
> I'm assuming that the idea is to override the CSS21 term "initial 
> containing block", for content inside of regions.  Your term is actually 
> different though: "initial containing block of a named flow".
> 
> In examples such as the following from CSS21 10.1:
> 
>   # If the element has 'position: absolute', [and the containing block
>   # isn't established by other means], the containing block is the
>   # initial containing block.
> 
> it is not at all clear that your new term overrides the established 
> term.  If you want it to do so then you'll need to be more explicit in 
> the regions spec.
> 
> Cheers,
> Anton Prowse
> http://dev.moonhenge.net
Received on Friday, 3 February 2012 13:12:49 GMT

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