https://bugzilla.gnome.org/show_bug.cgi?id=728426
gtk+ | Backend: Wayland | unspecified
Summary: Implement the wl_touch interface
Classification: Platform
Product: gtk+
Version: unspecified
OS/Version: Linux
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: Backend: Wayland
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
CC: [email protected], [email protected]
GNOME version: ---
For input, the wayland backend solely implements the wl_pointer and wl_keyboard
interfaces, which leaves touch events unhandled. I'm attaching 2 patches that:
1) decouples core devices from the seat capabilities by adding slave devices in
between, this is certainly closer to what x11 does, (plus GTK+ quite expects
core devices to always come in pointer/keyboard pairs)
2) Implements wl_touch, translating events into GdkEventTouch events.
One aspect I'm a bit dubious about is pointer emulation, on x11 the first touch
gets to emulate pointer events, but on the wayland protocol pointer and touch
are completely decoupled, I've replicated that behavior in GDK, having the
pointer moving and emitting events independently brings some confusion. It
should be better I guess when everything gets GDK_TOUCH_MASK, either directly
or indirectly.
Probably for the longer term it would be better to stick to the facts here, and
just have all touch events as !emulating_pointer on wayland.
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