[gtk+/wip/wayland-tablet-v2: 61/66] wayland: Create/expose pad devices

[Carlos Garnacho <carlosg src gnome org>]

commit 13075bd319e5a8de0af2296e1c2f7ad7900b4ca5
Author: Carlos Garnacho <carlosg gnome org>
Date:   Thu Aug 4 19:42:23 2016 +0200

    wayland: Create/expose pad devices
    
    These devices are kind of an strange case. Their "master" device is
    the keyboard, because they share toplevel focus with it, regardless
    of stylus focus. Nonetheless, they are only expected to send the
    GdkEventPad* set of events.

 gdk/wayland/gdkdevice-wayland.c |   27 +++++++++++++++++++++++++++
 1 files changed, 27 insertions(+), 0 deletions(-)
---
diff --git a/gdk/wayland/gdkdevice-wayland.c b/gdk/wayland/gdkdevice-wayland.c
index bf0cf71..d3c3124 100644
--- a/gdk/wayland/gdkdevice-wayland.c
+++ b/gdk/wayland/gdkdevice-wayland.c
@@ -2764,6 +2764,14 @@ _gdk_wayland_seat_remove_tablet_pad (GdkWaylandSeat          *seat,
     GDK_WAYLAND_DEVICE_MANAGER (seat->device_manager);
 
   seat->tablet_pads = g_list_remove (seat->tablet_pads, pad);
+
+  device_manager->devices =
+    g_list_remove (device_manager->devices, pad->device);
+  g_signal_emit_by_name (device_manager, "device-removed", pad->device);
+
+  _gdk_device_set_associated_device (pad->device, NULL);
+
+  g_object_unref (pad->device);
   g_free (pad);
 }
 
@@ -4087,7 +4095,26 @@ static void
 tablet_pad_handle_done (void                     *data,
                         struct zwp_tablet_pad_v2 *wp_tablet_pad)
 {
+  GdkWaylandTabletPadData *pad = data;
+  GdkWaylandSeat *seat = GDK_WAYLAND_SEAT (pad->seat);
+  GdkWaylandDeviceManager *device_manager =
+    GDK_WAYLAND_DEVICE_MANAGER (seat->device_manager);
+
   g_debug (G_STRLOC ": %s pad = %p", G_STRFUNC, wp_tablet_pad);
+
+  pad->device =
+    g_object_new (GDK_TYPE_WAYLAND_DEVICE_PAD,
+                  "name", "Pad device",
+                  "type", GDK_DEVICE_TYPE_SLAVE,
+                  "input-source", GDK_SOURCE_TABLET_PAD,
+                  "input-mode", GDK_MODE_SCREEN,
+                  "display", gdk_seat_get_display (pad->seat),
+                  "device-manager", device_manager,
+                  "seat", seat,
+                  NULL);
+
+  _gdk_device_set_associated_device (pad->device, seat->master_keyboard);
+  g_signal_emit_by_name (device_manager, "device-added", pad->device);
 }
 
 static void