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Re: [css-logical-properties] the 'inline-{start,end}' values for 'float' and 'clear'

From: Florian Rivoal <florian@rivoal.net>
Date: Thu, 5 Nov 2015 08:35:21 +0900
Cc: Jonathan Kew <jfkthame@gmail.com>, fantasai <fantasai.lists@inkedblade.net>, Koji Ishii <kojiishi@gmail.com>, "www-style@w3.org" <www-style@w3.org>, Rossen Atanassov <ratan@microsoft.com>, "Elika J. Etemad" <fantasai@inkedblade.net>
Message-Id: <A9D0C80F-8DF1-4067-89CB-F7F34A4598E8@rivoal.net>
To: "Tab Atkins Jr." <jackalmage@gmail.com>

> On 05 Nov 2015, at 04:02, Tab Atkins Jr. <jackalmage@gmail.com> wrote:
> 
> fantasai and I discussed this a bit today after reading Brad's email,
> and concluded that we did want to stick with just "start" and "end".
> Details:
> 
> For today's simple 1-axis floats, "start" and "end" are unambiguous
> and simple, and consistent with text-align/etc.
> 
> In the future when we have 2-axis floats (as in the Page Floats
> module), 'float' can become a 2-value property, consistent with the
> proposals for background-position and scroll-snap-align.  If you
> specify one value, it will duplicate to the second value (as normal
> for CSS).  The default float-reference (inline) will only pay
> attention to the inline-axis value, so the extraneous block-axis value
> is ignored (similar to how scroll-snap-align only pays attention to
> the relevant axis).  For the 2d float references (column, region,
> page), saying "float: start" will just put you in the start/start
> corner, which seems fine.

For the moment, page floats are not 2D, they are 2x1D. As in, they can be
floating either in the inline direction or in the block direction, but not
both, so your proposal wouldn't quite work. float-reference, as currently
specified, does not solve this. It does for float-reference:inline, as you
described, but not for the other values, since the current behavior allows
either block or inline, and your syntax would also allow for 2D floating.

We can solve this with more values on float-reference or more properties,
but I don't really want to conclude on start/end vs inline-start/inline-end
as values to the float property before we answer that question.

Quick proposal in that direction:

float-axis: auto | inline | block | both
float-reference: bfc | page | column | region

auto would compute to inline for bfc, and to block for for the other values.

 - Florian
Received on Wednesday, 4 November 2015 23:35:54 UTC

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