Re: [css-values][css-transforms][css-motion][css-background] Updated <position>

I have added use counters to Blink, so we will learn in three months how
often 3-value positions are currently being used in object-position, basic
shapes, gradients and also background-position and perspective-origin.




On Wed, May 3, 2017 at 6:22 AM, Simon Fraser <smfr@me.com> wrote:

> > On Mar 15, 2017, at 12:58 PM, fantasai <fantasai.lists@inkedblade.net>
> wrote:
> >
> > Tab and I just pushed the changes to drop the 3-value syntax from
> <position> per
> >  https://lists.w3.org/Archives/Public/www-style/2017Feb/0052.html
> > The canonical reference is now (again) in CSS Values and Units 3.
> >  https://drafts.csswg.org/css-values-3/#position
> >
> > This implies changes to object-position, mask-position, radial gradients,
> > and offset-position. It also makes <position> available for use in
> > transform-origin and perspective-origin.
> >
> > (Note, if implementers want us to also drop from background-position,
> I'm sure the
> > CSSWG could consider that as well if presented with compelling
> Web-compat data
> > indicating no problems... but we've otherwise special-cased
> background-position as
> > superset syntax that includes the 3-value clauses.)
> >
> > We would like to request
> >
> > A. Review of the altered syntax definition.
> > and subject to approval of A,
> > B. Republication of css-values-3.
> >     https://drafts.csswg.org/css-values-3/#changes
> > C. Republication of css-backgrounds-3.
> >     https://drafts.csswg.org/css-backgrounds-3/#changes-2014-09
> > D. Republication of motion-1 (which is soooooo overdue for publication).
> >      https://drafts.fxtf.org/motion/ vs https://www.w3.org/TR/motion-1/
> > E. Pending Transform edits and state of general coherence, republication
> of Transforms.
>
> I have reviewed the new syntax and it looks reasonable as the basis for
> transform-origin, and in perspective-origin.
>
> Simon
>
>
>