1319140 - (intersection-observer) Take clip-path into account

Status: NEW

(Core :: Layout, defect, P3)

Description

[Tobias Schneider [:tobytailor]]

clip-path should be applied to the intersection rectangle when traversing ancestor containers.

Comment 1

[Eric Shepherd [:sheppy]]

That this doesn't currently work is now mentioned on the main article for Intersection Observer API, but it will need updating once this is resolved. See:

https://developer.mozilla.org/en-US/docs/Web/API/Intersection_Observer_API#Browser_compatibility - Footnote 2.

Comment 2

[Jet Villegas (inactive)]

(In reply to Tobias Schneider [:tobytailor] from comment #0)
> clip-path should be applied to the intersection rectangle when traversing
> ancestor containers.

Can you paste a link to the relevant spec text?

Comment 3

[Tobias Schneider [:tobytailor]]

See https://wicg.github.io/IntersectionObserver/#calculate-intersection-rect-algo, point 2.

Comment 4

[Emilio Cobos Álvarez [:emilio]]

Attachment: WIP: Bug 1319140 - Take clip-path into account for IntersectionObserver.