wayland: Add common object for device classes

Add a new object class, MetaWaylandInputDevice, and make all device
classes (pointer, keyboard, touch) inherit it. In the future common
functionality may be placed there.

https://bugzilla.gnome.org/show_bug.cgi?id=771305

src/Makefile.am

@@ -291,6 +291,8 @@ libmutter_la_SOURCES +=				\
 	wayland/meta-wayland-data-device.c      \
 	wayland/meta-wayland-data-device.h      \
 	wayland/meta-wayland-data-device-private.h	\
+	wayland/meta-wayland-input-device.c	\
+	wayland/meta-wayland-input-device.h	\
 	wayland/meta-wayland-pointer-gestures.c	\
 	wayland/meta-wayland-pointer-gestures.h	\
 	wayland/meta-wayland-pointer-gesture-swipe.c	\

src/wayland/meta-wayland-input-device.c

@@ -0,0 +1,41 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2016 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Jonas Ådahl <jadahl@gmail.com>
+ */
+
+#include "config.h"
+
+#include "wayland/meta-wayland-input-device.h"
+
+G_DEFINE_TYPE (MetaWaylandInputDevice,
+               meta_wayland_input_device,
+               G_TYPE_OBJECT)
+
+static void
+meta_wayland_input_device_init (MetaWaylandInputDevice *input_device)
+{
+}
+
+static void
+meta_wayland_input_device_class_init (MetaWaylandInputDeviceClass *klass)
+{
+}

src/wayland/meta-wayland-input-device.h

@@ -0,0 +1,41 @@
+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+
+/*
+ * Copyright (C) 2016 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Jonas Ådahl <jadahl@gmail.com>
+ */
+
+#ifndef META_WAYLAND_INPUT_DEVICE_H
+#define META_WAYLAND_INPUT_DEVICE_H
+
+#include <glib-object.h>
+
+#define META_TYPE_WAYLAND_INPUT_DEVICE (meta_wayland_input_device_get_type ())
+G_DECLARE_DERIVABLE_TYPE (MetaWaylandInputDevice,
+                          meta_wayland_input_device,
+                          META, WAYLAND_INPUT_DEVICE,
+                          GObject)
+
+struct _MetaWaylandInputDeviceClass
+{
+  GObjectClass parent_class;
+};
+
+#endif /* META_WAYLAND_INPUT_DEVICE_H */

src/wayland/meta-wayland-keyboard.c

@@ -73,7 +73,8 @@ typedef enum
   GSD_KEYBOARD_NUM_LOCK_STATE_OFF
 } GsdKeyboardNumLockState;
 
-G_DEFINE_TYPE (MetaWaylandKeyboard, meta_wayland_keyboard, G_TYPE_OBJECT);
+G_DEFINE_TYPE (MetaWaylandKeyboard, meta_wayland_keyboard,
+               META_TYPE_WAYLAND_INPUT_DEVICE)
 
 static void meta_wayland_keyboard_update_xkb_state (MetaWaylandKeyboard *keyboard);
 static void meta_wayland_keyboard_set_numlock (MetaWaylandKeyboard *keyboard,

src/wayland/meta-wayland-keyboard.h

@@ -54,7 +54,7 @@
 #define META_TYPE_WAYLAND_KEYBOARD (meta_wayland_keyboard_get_type ())
 G_DECLARE_FINAL_TYPE (MetaWaylandKeyboard, meta_wayland_keyboard,
                       META, WAYLAND_KEYBOARD,
-                      GObject);
+                      MetaWaylandInputDevice)
 
 struct _MetaWaylandKeyboardGrabInterface
 {
@@ -81,7 +81,7 @@ typedef struct
 
 struct _MetaWaylandKeyboard
 {
-  GObject parent;
+  MetaWaylandInputDevice parent;
 
   MetaWaylandSeat *seat;
 

src/wayland/meta-wayland-pointer.c

@@ -83,7 +83,8 @@ enum {
 
 static guint signals[LAST_SIGNAL];
 
-G_DEFINE_TYPE (MetaWaylandPointer, meta_wayland_pointer, G_TYPE_OBJECT);
+G_DEFINE_TYPE (MetaWaylandPointer, meta_wayland_pointer,
+               META_TYPE_WAYLAND_INPUT_DEVICE)
 
 static MetaWaylandPointerClient *
 meta_wayland_pointer_client_new (void)

src/wayland/meta-wayland-pointer.h

@@ -34,7 +34,8 @@
 
 #define META_TYPE_WAYLAND_POINTER (meta_wayland_pointer_get_type ())
 G_DECLARE_FINAL_TYPE (MetaWaylandPointer, meta_wayland_pointer,
-                      META, WAYLAND_POINTER, GObject);
+                      META, WAYLAND_POINTER,
+                      MetaWaylandInputDevice)
 
 struct _MetaWaylandPointerGrabInterface
 {
@@ -62,7 +63,7 @@ struct _MetaWaylandPointerClient
 
 struct _MetaWaylandPointer
 {
-  GObject parent;
+  MetaWaylandInputDevice parent;
 
   MetaWaylandSeat *seat;
 

src/wayland/meta-wayland-seat.h

@@ -26,6 +26,7 @@
 #include <clutter/clutter.h>
 
 #include "meta-wayland-types.h"
+#include "meta-wayland-input-device.h"
 #include "meta-wayland-pointer.h"
 #include "meta-wayland-keyboard.h"
 #include "meta-wayland-touch.h"

src/wayland/meta-wayland-touch.c

@@ -34,7 +34,8 @@
 #include "backends/native/meta-backend-native.h"
 #endif
 
-G_DEFINE_TYPE (MetaWaylandTouch, meta_wayland_touch, G_TYPE_OBJECT);
+G_DEFINE_TYPE (MetaWaylandTouch, meta_wayland_touch,
+               META_TYPE_WAYLAND_INPUT_DEVICE)
 
 struct _MetaWaylandTouchSurface
 {

src/wayland/meta-wayland-touch.h

@@ -31,15 +31,14 @@
 #define META_TYPE_WAYLAND_TOUCH (meta_wayland_touch_get_type ())
 G_DECLARE_FINAL_TYPE (MetaWaylandTouch, meta_wayland_touch,
                       META, WAYLAND_TOUCH,
-                      GObject);
+                      MetaWaylandInputDevice)
-
 
 typedef struct _MetaWaylandTouchSurface MetaWaylandTouchSurface;
 typedef struct _MetaWaylandTouchInfo MetaWaylandTouchInfo;
 
 struct _MetaWaylandTouch
 {
-  GObject parent;
+  MetaWaylandInputDevice parent;
 
   MetaWaylandSeat *seat;
 

src/wayland/meta-wayland-types.h

@@ -23,6 +23,7 @@
 typedef struct _MetaWaylandCompositor MetaWaylandCompositor;
 
 typedef struct _MetaWaylandSeat MetaWaylandSeat;
+typedef struct _MetaWaylandInputDevice MetaWaylandInputDevice;
 typedef struct _MetaWaylandPointer MetaWaylandPointer;
 typedef struct _MetaWaylandPointerGrab MetaWaylandPointerGrab;
 typedef struct _MetaWaylandPointerGrabInterface MetaWaylandPointerGrabInterface;