[Wayland-bugs] [Bug 750845] popup windows don't get touch events

[gtk+ (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=750845

--- Comment #6 from Carlos Garnacho <carlosg at gnome.org> ---
Created attachment 312964
  --> https://bugzilla.gnome.org/attachment.cgi?id=312964&action=edit
wayland: Emulate crossing events when switching between pointer and touch

The common GDK code accounts for "pointer emulating" touch sequences to be
synchronized with the pointer position by the windowing system.

However on Wayland pointer and touch are completely independent, the backend
attempts to implement pointer emulation, but doesn't account for the
possible crossing events happening when the user switches from pointer to
touch or the opposite.

This will ensure that window_under_pointer lookups are correct for pointer
events emulated out of touch events, and don't end up ignored if the pointer
emulating touch sequence and the real pointer lie in different toplevels.

Inspired in a former patch by Jonny Lamb <jonnylamb at gnome.org>

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