On 08/27/2015 05:49 PM, L. David Baron wrote:
On Thursday 2015-08-06 09:42 -0700, [email protected] wrote:
We (blink) would like to unprefix the intrinsic sizing keywords:
https://drafts.csswg.org/css-sizing/#width-height-keywords
We support them for widths and for heights (though they all do the same thing
for heights)
We were wondering what Gecko's plans for those keywords is -- are you also
interested in unprefixing? Are you happy with the keywords as specced? Would
you rather stop supporting them?
I'm largely happy with them; they were my idea (under different
names) originally, although that proposal predated serious work on
vertical writing modes, which makes things a bit more complicated.
I haven't looked closely at the relevant specs lately, but I think
the controversial spec parts are the actual definitions of intrinsic
sizes, whereas the spec for the keywords is pretty trivial. Though
at a quick glance I think the spec at
https://drafts.csswg.org/css-sizing/#width-height-keywords for fill,
max-content, min-content, and fit-content is fine, at least for the
inline-size direction. (This of course requires that the actual
definitions exclude the effects of the (min-/max-/)(width/height)
properties, which I believe they do.)
My biggest concern is probably what they mean when used in the block
direction. I'm not sure we currently do anything sensible there, or
that the spec has sensible definitions for max-content, min-content,
and fill-available sizes there.
The CSSWG resolved (possibly re-resolved? I couldn't find the original
minutes, though I recall discussing the issue) on this here:
https://lists.w3.org/Archives/Public/www-style/2015Aug/0109.html
I think 'fit-content' can be safely thrown in with min/max-content.
For 'fill', I'm less sure we're solid.
A quick test strategy would be:
1. Fill a box wit content and give it properties P
2. For the min-content test
* assign it 'width: min-content' in the test
* assign it a zero-width container in the reference
3. For the max-content test
* assign it 'width: max-content' in the test
* assign it maximally large container in the reference
4. For the fit-content test
* assign it 'width: fit-content' in the test
* leave its container as auto
5. Make the reference boxes all 'float: left' or something else
to give them shrinkwrapping behavior.
as long as the test and reference match for all content C and all
properties P, the implementation of the keywords is correct, even
if the layout algorithms aren't quite there yet. :)
~fantasai
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