Support axis source, axis discrete, frame and axis stop events

[jonas: only send focus wl_pointer.frame if resource supports it]

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
diff --git a/src/data-device.c b/src/data-device.c
index 4a1c1b8..545a895 100644
--- a/src/data-device.c
+++ b/src/data-device.c
@@ -417,6 +417,16 @@
 }
 
 static void
+drag_grab_axis_source(struct weston_pointer_grab *grab, uint32_t source)
+{
+}
+
+static void
+drag_grab_frame(struct weston_pointer_grab *grab)
+{
+}
+
+static void
 drag_grab_cancel(struct weston_pointer_grab *grab)
 {
 	struct weston_pointer_drag *drag =
@@ -433,6 +443,8 @@
 	drag_grab_motion,
 	drag_grab_button,
 	drag_grab_axis,
+	drag_grab_axis_source,
+	drag_grab_frame,
 	drag_grab_cancel,
 };