Contact [email protected]

ExplainerTwo font units related to the cap-height of the font. They are the
last two to fully cover CSS Values font related units.

Specificationhttps://www.w3.org/TR/css-values-4/#cap

Summary

'cap' is equal to the used cap-height of the first available font. 'rcap'
is equal to the value of the cap unit on the root element.


Blink componentBlink>CSS
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ECSS>

TAG reviewNone

TAG review statusNot applicable

Risks


Interoperability and Compatibility

None


*Gecko*: Shipped/Shipping

*WebKit*: Positive (https://github.com/WebKit/standards-positions/issues/112
)

*Web developers*: Asked offline at the conference.

WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that
it has potentially high risk for Android WebView-based applications?

None

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

Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
?Yes
https://wpt.fyi/css/css-values/cap-invalidation.html
https://wpt.fyi/css/css-contain/container-queries/font-relative-units-dynamic.html
https://wpt.fyi/css/css-values/cap-unit-001.html

Flag name on chrome://flagsCSSCapFontUnits

Requires code in //chrome?False

Estimated milestones
Shipping on desktop 117
DevTrial on desktop 116
Shipping on Android 117
DevTrial on Android 116
Shipping on WebView 117

Anticipated spec changes

Open questions about a feature may be a source of future web compat or
interop issues. Please list open issues (e.g. links to known github issues
in the project for the feature specification) whose resolution may
introduce web compat/interop risk (e.g., changing to naming or structure of
the API in a non-backward-compatible way).
None

Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5137204166262784

This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.

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