This will represent a tablet pad.
https://bugzilla.gnome.org/show_bug.cgi?id=770026
3f56af3 gdkdevice: Add GDK_SOURCE_TABLET_PAD input source type for GdkDevices
gdk/gdkdevice.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
Upstream: git.gnome.org