Bug 245552

Summary:

Hue interpolation "specified" is not correctly implemented for hues < 0 or > 360

Product:

WebKit

Reporter:

Sam Weinig <sam>

Component:

CSS

Assignee:

Sam Weinig <sam>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

webkit-bug-importer

Priority:

Keywords:

InRadar

Version:

Other

Hardware:

Unspecified

OS:

Unspecified

Attachments:

Description	Flags
Test case	none
Existing top / With fix bottom	none

Sam Weinig

Reported 2022-09-22 19:26:52 PDT

We currently normalize hues (for CSS color functions hsl(), hwb(), lch(), and oklch()) to aggressively, and should instead be deferring normalization (hue % 360) until necessary, either because a conversation or interpolation method requires it. This should allow us to implement the "specified" hue interpolation method, which allows for the hue to circle the spectrum multiple times if necessary (i.e. 0 -> 720 would be two revolutions).

Attachments
Test case (211 bytes, text/html) 2022-09-22 19:40 PDT, Sam Weinig	no flags	Details
Existing top / With fix bottom (741.48 KB, image/png) 2022-09-22 19:41 PDT, Sam Weinig	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Sam Weinig

Comment 1 2022-09-22 19:40:11 PDT

Created attachment 462553 [details] Test case

Sam Weinig

Comment 2 2022-09-22 19:41:39 PDT

Created attachment 462554 [details] Existing top / With fix bottom

Radar WebKit Bug Importer

Comment 3 2022-09-23 16:11:23 PDT

<rdar://problem/100344615>

Sam Weinig

Comment 4 2022-09-23 16:24:25 PDT

Pull request: https://github.com/WebKit/WebKit/pull/4654

EWS

Comment 5 2022-09-24 19:25:34 PDT

Committed 254833@main (cf0675f3297a): <https://commits.webkit.org/254833@main> Reviewed commits have been landed. Closing PR #4654 and removing active labels.

Note You need to log in before you can comment on or make changes to this bug.