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Re: [css3-flexbox] Bad result in flex algorithm when combining stretch, and elements with an aspect ratio

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Thu, 1 Nov 2012 14:27:46 +0100
Message-ID: <CAAWBYDB+j+VmyiT47oq4070y=JSVvMaG1KKXU52W9PiEB79MDQ@mail.gmail.com>
To: www-style list <www-style@w3.org>
So, based on feedback in this thread, here's my modified suggestion:

1. In step 3, add a step that, if the available cross size is
definite, and an item has both an intrinsic aspect ratio and
'align-self:stretch', goes ahead and sets the hypothetical cross size
of the item to the available cross size, and the hypothetical main
size according to its aspect ratio.
2. Modify step 9 (handling "stretch" alignment) to have an explicit
statement about handling aspect-ratio items, to clarify that it
changes the cross-size *while ignoring the aspect ratio*, so the main
size doesn't change.

This should be all we need to do.  If an item with an aspect ratio is
stretched and flexible, it'll first stretch its cross size to fit the
line, then flex its main size (possibly changing its cross size as
well to maintain its ratio), then stretch its cross size to fit the
line *again* if necessary, this time *not* changing the main size to
maintain its ratio.

I've gotten private feedback from Ojan & Tony that they're fine with
these additions, and I think this matches IE's behavior.  If I don't
get any objections from one of the other browsers, I'll put this into
the spec in a few days.

Received on Thursday, 1 November 2012 13:28:33 UTC

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