Intent to Implement: CSS conic-gradient()

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Florin Malita

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Mar 23, 2017, 11:18:47 AM3/23/17
to blink-dev

Contact emails

fma...@chromium.org


Spec

https://drafts.csswg.org/css-images-4/#conic-gradients


Summary

Implement conic gradients from CSS Image Values Level 4.


Motivation

Conic gradients are useful for a number of effects on the Web that cannot be emulated in any other way — see https://leaverou.github.io/conic-gradient/.


Interoperability and Compatibility Risk

Interoperability risk: medium-low.  The feature is not yet implemented in other browsers, but the API surface is small.


Edge: No signals (https://developer.microsoft.com/en-us/microsoft-edge/platform/status/conicgradients/)

Firefox: No signals (https://bugzilla.mozilla.org/show_bug.cgi?id=1175958)

Safari: No signals (https://bugs.webkit.org/show_bug.cgi?id=146113)

Web developers: Positive


Compatibility risk: low.


Ongoing technical constraints

None.


Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?

Yes.


OWP launch tracking bug

None yet, will open for shipping.


http://crbug.com/502970 is the feature request.


Link to entry on the feature dashboard

None yet, will add for shipping.


Requesting approval to ship?

No.

Rick Byers

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Mar 23, 2017, 11:25:56 AM3/23/17
to Florin Malita, blink-dev, fantasai, Tab Atkins Jr.
This is #39 on the top starred blink bugs list, so I'm excited to see work progress!  Thanks!

It's probably worth checking with Tab or Fantasai that the spec is stable and ready to shipped sometime soon.

fantasai

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Mar 23, 2017, 2:47:10 PM3/23/17
to Rick Byers, Florin Malita, blink-dev, Tab Atkins Jr.
On 03/23/2017 11:25 AM, Rick Byers wrote:
> This is #39 on the top starred blink bugs list, so I'm excited to see work progress! Thanks!
>
> It's probably worth checking with Tab or Fantasai that the spec is stable and ready to shipped sometime soon.

The spec hasn't seen any significant review within the CSSWG
because implementer feedback at the time it was drafted was
saying, “We don't want to implement this.”

So, given this is mostly a syntactic issue and we're basing
the syntactic model off of an existing feature, it's probably
not hugely unstable... but it would be best to post a message
to www-style asking the CSSWG to actually publish a spec and
solicit feedback prior to shipping, as we don't even have an
FPWD of css-images-4. :)

~fantasai
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