Bug 232991

Summary:	[GTK] Support the "begin" phase for touchpad gestures
Product:	WebKit	Reporter:	Chris Lord <clord>
Component:	Scrolling	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	alexm, simon.fraser
Priority:	P2
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=232376 https://bugs.webkit.org/show_bug.cgi?id=232992

Description Chris Lord 2021-11-11 04:11:46 PST

Since Gdk 3.18, swipe gestures have been supported that give us proper event phases (as opposed to just continue and end). Given we ask for a minimum of 3.22, we should take advantage of these to provide proper event phases, which would help us improve scrolling behaviour.

Comment 1 Alexander Mikhaylenko 2021-11-23 23:28:21 PST

Note that for scrolling begin events are synthesized with the first update event, and on GTK level - not even libinput. So I don't think it would improve much in practice.

This should get improved a lot when GTK gets hold gesture support though - then it should be possible to stop kinetic scrolling as soon as fingers are down instead when they are first moved.