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Re: [css-flexbox] getting flex base size from aspect ratio, with explicit "flex-basis:auto"

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Thu, 7 Aug 2014 16:19:24 -0700
Message-ID: <CAAWBYDBVGeMG7tKapzHEOwApouY=i60xb3JCCsrn7UfgZDqcgA@mail.gmail.com>
To: Daniel Holbert <dholbert@mozilla.com>
Cc: www-style <www-style@w3.org>
On Thu, Aug 7, 2014 at 2:14 PM, Daniel Holbert <dholbert@mozilla.com> wrote:
> Hi www-style,
>
> The flexbox ED says the following about determining flex basis:
>
>  #  [dholbert: If the flex item has an indefinite flex basis,
>  #   so that we get past option (A), AND...]
>  # (B) If the flex item has ...
>  #      * an intrinsic aspect ratio,
>  #      * a flex basis of 'main-size', and
>  #      * a definite cross size
>  #     then the flex base size is calculated from its inner cross size
>  #     and the flex item’s intrinsic aspect ratio.
> http://dev.w3.org/csswg/css-flexbox/#algo-main-item
>
> I think that second bullet-point under B should be expanded to include
> explicit 'auto' for flex-basis. So it should say:
>  #      * a flex basis of 'main-size' or 'auto', and
>
> Otherwise (with the current spec language), we'll use the intrinsic
> aspect ratio inconsistently. We'd use it here:
>  <img style="flex-basis:main-size;height:auto;width:30px">
> ...but not here:
>  <img style="flex-basis:auto;width:30px">
>
> (assuming this <img> is an item in a vertical flex container)

Rather, I think it should be expanded to "a flex-basis of 'main-size',
or an indefinite flex-basis".  Right?  There are more values than just
"auto" that are indefinite.

~TJ
Received on Thursday, 7 August 2014 23:20:11 UTC

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