Contact [email protected]

ExplainerNone (see summary)

Specificationhttps://www.w3.org/TR/css-transforms-1/#transform-box

Summary

Allows changing how the reference box for the 'transform' property is
computed. This adds additional capabilities that will allow creating
transforms/graphical effects where - for example - the width of the border
of an element does not influence the result (e.g rotation around a point in
the content box) or the stroke of an (SVG) element should influence the
result (e.g rotating a stroked shape around its center - including the
stroke).

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

TAG reviewNone

TAG review statusNot applicable

Risks


Interoperability and Compatibility

Low interoperability risk. The feature being part of Interop2023 gives it a
decent chance of becoming interoperable - at least within the subset that
is tested in that scope.


*Gecko*: No signal This is small change that is in scope of Interop2023

*WebKit*: Shipped/Shipping (
https://webkit.org/blog/10247/new-webkit-features-in-safari-13-1)
Implemented since TP 96

*Web developers*: Positive (https://crbug.com/924472) 9+ stars in the bug
tracker

*Other signals*:

WebView application risks

Minimal (adds a couple of new keywords to an existing property)



Debuggability



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

Flag name on chrome://flags

Finch feature nameCSSTransformBoxAdditionalKeywords

Requires code in //chrome?False

Sample linkshttps://developer.mozilla.org/en-US/docs/Web/CSS/transform-box

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

Anticipated spec changes

None

Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/6208828575580160

Links to previous Intent discussionsOriginal I2S for the transform-box
property:
https://groups.google.com/a/chromium.org/g/blink-dev/c/4ZWHz8tCONI/m/XBTvQtw2BAAJ

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

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