[Wayland-bugs] [Bug 99415] RFE: Need way to report start of finger scroll

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99415

--- Comment #2 from Adam Goode <adam at spicenitz.org> ---
My motivation is to make sure we can get touchpad scrolling that works as well
as touchscreen scrolling. In this case, with a touchscreen on common platforms
(Android, iOS), you can fling a page and watch it scroll by, then put your
finger down to halt the fling.

On Chrome OS, it works this way with 2-finger scrolling flings, and it is a
very nice way to seek through long documents.

When I was using evince, I noticed that I got the fling, but it wouldn't stop
without scrolling a bit (which wasn't very easy, and made me miss the target).
I looked into what Gtk+ and libinput were doing and realized that I wasn't
getting the finger down events at all.

Thanks for thinking about this. It doesn't need to be a scroll event actually,
but could be a new or existing touch event (proximity)?

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