Bug 243173

Summary:	Update intrinsic sizing of flex containers (e.g. container max-content width) to new spec text
Product:	WebKit	Reporter:	David Grogan <dgrogan>
Component:	Layout and Rendering	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	bfulgham, karlcow, sgill26, simon.fraser, webkit-bug-importer, zalan
Priority:	P2	Keywords:	BrowserCompat, InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=119113

Description David Grogan 2022-07-25 12:17:55 PDT

All of the engines currently implement the same intrinsic size algorithm for flex containers, but it is not a good algorithm and it is not specified. Authors really want a better algorithm, and the spec calls for one in https://drafts.csswg.org/css-flexbox/#intrinsic-sizes.

Blink is planning to launch the new algorithm in the next few months, and it'd be great if the engines could sync up shipping to minimize breakage. We've talked about that some on the Firefox bug https://bugzilla.mozilla.org/show_bug.cgi?id=1055887.

I didn't see an existing WebKit bug for this, apologies if I missed it.

The chrome bugs for this are https://crbug.com/240765 and https://crbug.com/507397, which are the most starred flex bugs in our tracker.

Comment 1 David Grogan 2022-07-25 12:18:26 PDT

Oh, the new algorithm would probably supersede this bug about the old algorithm https://bugs.webkit.org/show_bug.cgi?id=119113

Comment 2 Radar WebKit Bug Importer 2022-07-25 19:42:16 PDT

<rdar://problem/97583061>