1661582 - [css-overflow] Implement `overflow-clip-margin`'s `visual-box` property support

Status: NEW

(Core :: Layout: Scrolling and Overflow, enhancement)

Description

[Emilio Cobos Álvarez (:emilio)]

It seems the css-overflow spec defines an overflow-clip-margin property that complements overflow: clip by basically inflating the clip rect.

Should be relatively straight-forward to implement.

Comment 2

[Daniel Holbert [:dholbert]]

See https://github.com/w3c/csswg-drafts/issues/5801 where the CSSWG resolved on adding the *-box keywords (border-box, padding-box, content-box) to this property (which will probably be reflected in the actual spec by the time someone implements this).

(fantasai says padding-box would be the default behavior, and content-box allows authors to get a different behavior that they sometimes want, as described in https://bugs.chromium.org/p/chromium/issues/detail?id=99364 - see motivating examples in the first comment there.)

Comment 4

[Jonathan Kew [:jfkthame]]

Note that there's currently an open CSSWG issue suggesting a possible change to the property name.

Comment 5

[Queen Vinyl Da.i'gyu (she/her)]

FYI, support for the property with a <length> value was added in bug 1769512.