[mutter] clutter: Add clutter_input_device_is_grouped call/vfunc

[Carlos Garnacho <carlosg src gnome org>]

commit e081bb3921aefdf773ee4f490c56139d467c3757
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Feb 13 11:58:52 2017 +0100

    clutter: Add clutter_input_device_is_grouped call/vfunc
    
    This will be used to query grouped devices (eg. tablets and pads)
    
    https://bugzilla.gnome.org/show_bug.cgi?id=779986

 clutter/clutter/clutter-device-manager-private.h   |    3 +++
 clutter/clutter/clutter-input-device.c             |   10 ++++++++++
 clutter/clutter/clutter-input-device.h             |    3 +++
 clutter/clutter/evdev/clutter-input-device-evdev.c |   14 ++++++++++++++
 clutter/clutter/x11/clutter-input-device-xi2.c     |    8 ++++++++
 5 files changed, 38 insertions(+), 0 deletions(-)
---
diff --git a/clutter/clutter/clutter-device-manager-private.h 
b/clutter/clutter/clutter-device-manager-private.h
index 37b2eec..57423c4 100644
--- a/clutter/clutter/clutter-device-manager-private.h
+++ b/clutter/clutter/clutter-device-manager-private.h
@@ -160,6 +160,9 @@ struct _ClutterInputDeviceClass
                                       guint               button);
   gint (* get_group_n_modes) (ClutterInputDevice *device,
                               gint                group);
+
+  gboolean (* is_grouped) (ClutterInputDevice *device,
+                           ClutterInputDevice *other_device);
 };
 
 /* Platform-dependent interface */
diff --git a/clutter/clutter/clutter-input-device.c b/clutter/clutter/clutter-input-device.c
index 686e5a8..d8caf01 100644
--- a/clutter/clutter/clutter-input-device.c
+++ b/clutter/clutter/clutter-input-device.c
@@ -2266,3 +2266,13 @@ clutter_input_device_set_mapping_mode (ClutterInputDevice        *device,
   device->mapping_mode = mapping;
   g_object_notify (G_OBJECT (device), "mapping-mode");
 }
+
+gboolean
+clutter_input_device_is_grouped (ClutterInputDevice *device,
+                                 ClutterInputDevice *other_device)
+{
+  g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), FALSE);
+  g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (other_device), FALSE);
+
+  return CLUTTER_INPUT_DEVICE_GET_CLASS (device)->is_grouped (device, other_device);
+}
diff --git a/clutter/clutter/clutter-input-device.h b/clutter/clutter/clutter-input-device.h
index f80a48c..3961b50 100644
--- a/clutter/clutter/clutter-input-device.h
+++ b/clutter/clutter/clutter-input-device.h
@@ -168,6 +168,9 @@ ClutterInputDeviceMapping clutter_input_device_get_mapping_mode (ClutterInputDev
 CLUTTER_AVAILABLE_IN_ALL
 void                      clutter_input_device_set_mapping_mode (ClutterInputDevice        *device,
                                                                  ClutterInputDeviceMapping  mapping);
+CLUTTER_AVAILABLE_IN_ALL
+gboolean                  clutter_input_device_is_grouped       (ClutterInputDevice *device,
+                                                                 ClutterInputDevice *other_device);
 
 G_END_DECLS
 
diff --git a/clutter/clutter/evdev/clutter-input-device-evdev.c 
b/clutter/clutter/evdev/clutter-input-device-evdev.c
index 0dc578d..6019d05 100644
--- a/clutter/clutter/evdev/clutter-input-device-evdev.c
+++ b/clutter/clutter/evdev/clutter-input-device-evdev.c
@@ -193,6 +193,19 @@ clutter_input_device_evdev_get_group_n_modes (ClutterInputDevice *device,
   return libinput_tablet_pad_mode_group_get_num_modes (mode_group);
 }
 
+static gboolean
+clutter_input_device_evdev_is_grouped (ClutterInputDevice *device,
+                                       ClutterInputDevice *other_device)
+{
+  struct libinput_device *libinput_device, *other_libinput_device;
+
+  libinput_device = clutter_evdev_input_device_get_libinput_device (device);
+  other_libinput_device = clutter_evdev_input_device_get_libinput_device (other_device);
+
+  return libinput_device_get_device_group (libinput_device) ==
+    libinput_device_get_device_group (other_libinput_device);
+}
+
 static void
 clutter_input_device_evdev_class_init (ClutterInputDeviceEvdevClass *klass)
 {
@@ -206,6 +219,7 @@ clutter_input_device_evdev_class_init (ClutterInputDeviceEvdevClass *klass)
   klass->update_from_tool = clutter_input_device_evdev_update_from_tool;
   klass->is_mode_switch_button = clutter_input_device_evdev_is_mode_switch_button;
   klass->get_group_n_modes = clutter_input_device_evdev_get_group_n_modes;
+  klass->is_grouped = clutter_input_device_evdev_is_grouped;
 
   obj_props[PROP_DEVICE_MATRIX] =
     g_param_spec_boxed ("device-matrix",
diff --git a/clutter/clutter/x11/clutter-input-device-xi2.c b/clutter/clutter/x11/clutter-input-device-xi2.c
index d6bb87f..7fb0e05 100644
--- a/clutter/clutter/x11/clutter-input-device-xi2.c
+++ b/clutter/clutter/x11/clutter-input-device-xi2.c
@@ -80,6 +80,13 @@ clutter_input_device_xi2_keycode_to_evdev (ClutterInputDevice *device,
   return TRUE;
 }
 
+static gboolean
+clutter_input_device_xi2_is_grouped (ClutterInputDevice *device,
+                                     ClutterInputDevice *other_device)
+{
+  return FALSE;
+}
+
 static void
 clutter_input_device_xi2_class_init (ClutterInputDeviceXI2Class *klass)
 {
@@ -89,6 +96,7 @@ clutter_input_device_xi2_class_init (ClutterInputDeviceXI2Class *klass)
   gobject_class->constructed = clutter_input_device_xi2_constructed;
 
   device_class->keycode_to_evdev = clutter_input_device_xi2_keycode_to_evdev;
+  device_class->is_grouped = clutter_input_device_xi2_is_grouped;
 }
 
 static void