Created attachment 364531 [details] [review]
gdk: Add gdk_seat_get_master_pointers()

Traditionally (and on most backends) there's a single master pointer driven
by all pointing devices. The notable exception is wayland though, where
master pointing devices are created per capability in the case of
pointer/touch, and one for each drawing tablet.

This function call makes it easy to access all these.

Created attachment 364532 [details] [review]
gdk: Add GDK_SEAT_CAPABILITY_TABLET_PAD

Tablet pads don't adapt really well to any other capability, so add a
distinct one to be able to query those properly.

Review of attachment 364531 [details] [review]:

Otherwise, looks fine to me.

::: gdk/gdkseat.c
@@ +472,3 @@
+ * In other backends where there can possibly be multiple foci
+ * (eg. wayland), this function will return all master
+ * #GdkDevice<!-- -->s that represent these.

no need for the <!-- -->s dance anymore. gdk-pixbuf understands #GdkDevices these days.

Review of attachment 364532 [details] [review]:

looks ok to me

Attachment 364531 [details] pushed as 4c45022 - gdk: Add gdk_seat_get_master_pointers()
Attachment 364532 [details] pushed as 7531be3 - gdk: Add GDK_SEAT_CAPABILITY_TABLET_PAD