Emit scroll on both axes.
Only emit deltas that are multiples of 1.
Emit scroll with horizontal deltas.
Emit ::decelerate after continuous scroll finishes.
Don't emit scroll.
A Gtk.EventControllerScrollFlags value to prefer physical direction over logical direction (i.e. oblivious to natural scroll).
Emit scroll with vertical deltas.
Describes the behavior of a Gtk.EventControllerScroll.