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Re: [css-grid] Implied minimum size and border,padding & margin

From: fantasai <fantasai.lists@inkedblade.net>
Date: Mon, 11 Apr 2016 16:58:45 -0400
To: Sergio Villar Senin <svillar@igalia.com>, www-style list <www-style@w3.org>
Message-ID: <570C1005.7030507@inkedblade.net>
On 03/30/2016 05:13 AM, Sergio Villar Senin wrote:
> Hi,
>
> another doubt regarding how to compute the size of auto tracks. Specs
> literally say:
>
> "For auto minimums: If the track has an auto min track sizing function
> and the grid container is being sized under a min/max-content
> constraint, set the track’s base size to the maximum of its items’
> min/max-content contributions, respectively.
> Otherwise, set its base size to the maximum of its items’ “min-size
> contributions”: the value specified by its respective min-width or
> min-height properties (whichever matches the relevant axis) if the
> specified size is auto, or else the item’s min-content contribution."
>
> So we either return the min|max-content contribution or the value
> specified for the correspondent min-size property. In the case of
> min|max-content contribution is pretty clear from the definition[1] that
> we should include border, padding and margin. But in the case of
> returning the value specified by min-height|width the specs does not say
> anything. In Blink/WebKit we're adding them too in that case just for
> coherency with the other case, but wanted to double check it with the
> working group.

Yeah, we forgot to mention that it's the outer size we're interested in.
Fixed in
   https://hg.csswg.org/drafts/diff/dc3737661a44/css-grid/Overview.bs

> BTW we're always using items' border, paddings and margins to compute
> the sizes of content-sized tracks (or when computing alignment). That is
> not explicitly mentioned in the specs either but I guess is the right
> thing to do. Isn't it?

Yes. The min/max-content size contributions are defined to be outer sizes.

~fantasai
Received on Monday, 11 April 2016 20:59:15 UTC

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