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Re: Thoughts on line grids and line spacing proposals

From: Florian Rivoal <florian@rivoal.net>
Date: Tue, 10 Oct 2017 15:46:53 +0900
Cc: "L. David Baron" <dbaron@dbaron.org>, "www-style@w3.org" <www-style@w3.org>
Message-Id: <DDA98D57-D514-430F-AE25-7F77C9CFD817@rivoal.net>
To: Alan Stearns <stearns@adobe.com>

> On Oct 10, 2017, at 13:27, Alan Stearns <stearns@adobe.com> wrote:
> 
> On 10/9/17, 8:15 PM, "Florian Rivoal" <florian@rivoal.net> wrote:
> * The major issue I am seeing with this proposal is that it doesn't seem to do anything to address what was already the primary weakness of the existing line-grid proposal: snapping lines to the grid can change (increase) the size of their container, and in some layout modes, changing its size can change its position, which should imply a different snapping, and unless we explicitly break out of this one way or another, we've good an infinite loop.
> 
> Please read https://drafts.csswg.org/css-line-grid/#alignment-interactions for a solution to this problem. One spacing adjustment to deal with size and position changes should be sufficient to break out of the loop. There are examples showing how this is done for centered and end-aligned content in the draft, but if you have other concerns I’m happy to work out additional examples to add.

Hi Alan,

You are right, I should have mentioned this existing proposal. As far as I can tell, the problem is the same in both variants of the line grid, so the solution should be the same. Workarounds like the keyword separation I suggested may be different, but the actual solution ought to be the same.

As for this specific proposal, you have pointed me to in in the past, and I have not reported back with either satisfaction or issues. Apologies, that was very bad form.

I do have issues with the solution outlined in that section of the line-grid. It does seem like a step in the direction of a solution, but I am not sure it is complete or well defined. Maybe I am just not understanding it fully, though. Anyway, whether it should be resolved or explained away, I have a issue about that, and this discussion can continue there. As it applies equally to the existing line-gird and to dbaron's proposal, here isn't the best place to discuss this. Sorry for not filing this issue a year (or more) ago.

https://github.com/w3c/csswg-drafts/issues/1856

—Florian
Received on Tuesday, 10 October 2017 06:47:20 UTC

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