[Wayland-bugs] [Bug 765939] [Wayland] very slow scrolling in GtkMenu using the touchpad

[gtk+ (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=765939

--- Comment #2 from Olivier Fourdan <ofourdan at redhat.com> ---
Created attachment 327232
  --> https://bugzilla.gnome.org/attachment.cgi?id=327232&action=edit
[PATCH 2/2] gtkmenu: ignore emulated scroll events

On X11, we get both smooth and emulated scroll events, whereas other
backends such as wayland will give smooth events only with touchpad
scrolling.

Discard emulated scroll events so that we get consistent behaviours
between backends.

Allow for both horizontal and vertical smooth events for scrolling so
that horizontal scrolling still works without emulated scroll events as
well, again for consistency between gdk backends.

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