Bug 145157

Summary:	A scroller with "scroll-snap-coordinate" descendants needs interdependent X and Y snap offsets
Product:	WebKit	Reporter:	Simon Fraser (smfr) <simon.fraser>
Component:	Layout and Rendering	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	50167214, bfulgham, mrobinson, simon.fraser, webkit-bug-importer, wenson_hsieh
Priority:	P2	Keywords:	InRadar
Version:	528+ (Nightly build)
Hardware:	Unspecified
OS:	Unspecified

Description Simon Fraser (smfr) 2015-05-18 19:05:10 PDT

We currently store a list of offsets for X and Y axes for snap points. When a scroller has descendants with 'scroll-snap-coordinate' values, we need to store x,y points, not independent lists of x and y offsets.

http://dev.w3.org/csswg/css-snappoints/

Comment 1 Simon Fraser (smfr) 2015-06-17 14:16:35 PDT

Spec is actually unclear on this point, and it's under discussion.

Comment 2 yisibl 2015-07-08 19:58:10 PDT

We must support offset value(Firefox 39 also supported: https://developer.mozilla.org/en-US/docs/Web/CSS/scroll-snap-coordinate)

Like this:

scroll-snap-coordinate: top right 10px;
scroll-snap-coordinate: bottom 10px right 20px;

and scroll-snap-destination

scroll-snap-destination: top right 10px;
scroll-snap-destination: bottom 10px right 20px;

See also http://dev.w3.org/csswg/css-backgrounds-3/#position

Comment 3 yisibl 2015-07-08 19:59:37 PDT

Name:	scroll-snap-coordinate
Value:	none | <position>#

Also scroll-snap-coordinate: none is not support.

Comment 4 Martin Robinson 2020-10-16 09:45:36 PDT

This might be a duplicate of https://bugs.webkit.org/show_bug.cgi?id=145099?

Comment 5 Radar WebKit Bug Importer 2020-11-30 09:29:33 PST

<rdar://problem/71808529>

Comment 6 Martin Robinson 2021-01-20 04:42:37 PST

*** Bug 219273 has been marked as a duplicate of this bug. ***

Comment 7 Martin Robinson 2021-07-07 07:18:13 PDT


*** This bug has been marked as a duplicate of bug 145099 ***