1436997 - Support variation-font format hints for @font-face resources

Status: RESOLVED FIXED

(Core :: CSS Parsing and Computation, enhancement)

Description

[Jonathan Kew [:jfkthame]]

CSS Fonts Level 4 introduces new format hints for fonts that require variation support, so authors can provide alternative resources for browsers that don't support variations. Spec: https://drafts.csswg.org/css-fonts-4/#src-desc.

Comment 1

[Jonathan Kew [:jfkthame]]

Attachment: When variation-font support is enabled, accept new CSS Fonts 4 format-hint strings for variation fonts

Comment 2

[Jonathan Kew [:jfkthame]]

Attachment: Add reftests to check that we accept the *-variations format strings iff the variation-font pref is enabled

There should eventually be much more extensive variation-font tests coming along in web-platform tests (Microsoft has a bunch of testcases currently under review, for example), but in the meantime this is a simple reftest to check that we accept the new format hints (only when our variation-font pref is enabled).

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/12b89457c623
When variation-font support is enabled, accept new CSS Fonts 4 format-hint strings for variation fonts. r=jwatt
https://hg.mozilla.org/integration/mozilla-inbound/rev/4697cdd9969f
Add reftests to check that we accept the *-variations format strings iff the variation-font pref is enabled. r=jwatt

Comment 4

[Noemi Erli[:noemi_erli]]

https://hg.mozilla.org/mozilla-central/rev/12b89457c623
https://hg.mozilla.org/mozilla-central/rev/4697cdd9969f