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Re: [css3-regions] auto widths and heights of regions

From: Vincent Hardy <vhardy@adobe.com>
Date: Fri, 27 Jan 2012 07:11:55 -0800
To: Rossen Atanassov <Rossen.Atanassov@microsoft.com>, "www-style@w3.org" <www-style@w3.org>
CC: fantasai <fantasai.lists@inkedblade.net>, Witold Baryluk <baryluk@smp.if.uj.edu.pl>
Message-ID: <CB47FE9D.2D2FB%vhardy@adobe.com>
Hi Rossen,

Thanks for your input. I have opened a bug on this:

https://www.w3.org/Bugs/Public/show_bug.cgi?id=15741

Cheers,
-v

From: Rossen Atanassov <Rossen.Atanassov@microsoft.com<mailto:Rossen.Atanassov@microsoft.com>>
Date: Thu, 26 Jan 2012 22:36:58 -0800
To: Adobe Systems <vhardy@adobe.com<mailto:vhardy@adobe.com>>, "www-style@w3.org<mailto:www-style@w3.org>" <www-style@w3.org<mailto:www-style@w3.org>>
Cc: fantasai <fantasai.lists@inkedblade.net<mailto:fantasai.lists@inkedblade.net>>, Witold Baryluk <baryluk@smp.if.uj.edu.pl<mailto:baryluk@smp.if.uj.edu.pl>>
Subject: RE: [css3-regions] auto widths and heights of regions

-----Original Message-----
From: Vincent Hardy [mailto:vhardy@adobe.com]
Sent: Thursday, January 05, 2012 7:09 PM
I will let Rossen comment further because he is the author of the document:

http://wiki.csswg.org/_media/spec/css3-regions/auto-sizing.pdf

Thanks Vincent, this threat slipped inside my junk folder...

On 12-26 19:44, fantasai wrote:

It should definitely be possible for the last region to have auto
height. I  assume an auto-height region would just consume all the
content in the flow.

In the typical case computing 'height: auto' on regions (especially the last one) should doable. There are complications when there are writing modes with orthogonal direction, but again that should be solvable.

Wrt auto widths, intrinsic sizing for regions would be similar to the
intrinsic sizing of shrinkwrapped elements across pages: that is, the
min-content and max-content sizes are calculated across the entire flow,
and the width is then calculated per fragment using those content sizes.

I agree that this is pretty straight forward to implement and spec (see Option 1 in my doc). There are of course degenerate cases of wide content in previous or subsequent regions that would make less than optimal layout. I am also fine with reopening this issue for regions and defining it this way - it will be much better than not having shrink-to-fit at all for sure.

Cheers,
Rossen
Received on Friday, 27 January 2012 15:12:32 GMT

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