backends: Do not use device IDs on idle monitors

Device IDs are somewhat x11 specific, seems better to avoid those
on public API. We can rely everywhere on ClutterInputDevice, so use
it instead.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/852

8 files changed, 56 insertions, 56 deletions

diff --git a/src/backends/meta-backend-private.h b/src/backends/meta-backend-private.h
index 416475bff..132646068 100644
--- a/src/backends/meta-backend-private.h
+++ b/src/backends/meta-backend-private.h
@@ -121,8 +121,8 @@ void meta_init_backend (GType backend_gtype);
 
 ClutterBackend * meta_backend_get_clutter_backend (MetaBackend *backend);
 
-MetaIdleMonitor * meta_backend_get_idle_monitor (MetaBackend *backend,
-                                                 int          device_id);
+MetaIdleMonitor * meta_backend_get_idle_monitor (MetaBackend        *backend,
+                                                 ClutterInputDevice *device);
 void meta_backend_foreach_device_monitor (MetaBackend *backend,
                                           GFunc        func,
                                           gpointer     user_data);
diff --git a/src/backends/meta-backend.c b/src/backends/meta-backend.c
index f5d915766..2d1519787 100644
--- a/src/backends/meta-backend.c
+++ b/src/backends/meta-backend.c
@@ -81,8 +81,6 @@
 #include "backends/native/meta-backend-native.h"
 #endif
 
-#define META_IDLE_MONITOR_CORE_DEVICE 0
-
 enum
 {
   KEYMAP_CHANGED,
@@ -311,44 +309,42 @@ meta_backend_foreach_device_monitor (MetaBackend *backend,
 }
 
 static MetaIdleMonitor *
-meta_backend_create_idle_monitor (MetaBackend *backend,
-                                  int          device_id)
+meta_backend_create_idle_monitor (MetaBackend        *backend,
+                                  ClutterInputDevice *device)
 {
   return g_object_new (META_TYPE_IDLE_MONITOR,
-                       "device-id", device_id,
+                       "device", device,
                        NULL);
 }
 
 static void
-create_device_monitor (MetaBackend *backend,
-                       int          device_id)
+create_device_monitor (MetaBackend        *backend,
+                       ClutterInputDevice *device)
 {
   MetaBackendPrivate *priv = meta_backend_get_instance_private (backend);
   MetaIdleMonitor *idle_monitor;
 
-  g_assert (g_hash_table_lookup (priv->device_monitors, &device_id) == NULL);
+  if (g_hash_table_contains (priv->device_monitors, device))
+    return;
 
-  idle_monitor = meta_backend_create_idle_monitor (backend, device_id);
-  g_hash_table_insert (priv->device_monitors, &idle_monitor->device_id, idle_monitor);
+  idle_monitor = meta_backend_create_idle_monitor (backend, device);
+  g_hash_table_insert (priv->device_monitors, device, idle_monitor);
 }
 
 static void
-destroy_device_monitor (MetaBackend *backend,
-                        int          device_id)
+destroy_device_monitor (MetaBackend        *backend,
+                        ClutterInputDevice *device)
 {
   MetaBackendPrivate *priv = meta_backend_get_instance_private (backend);
 
-  g_hash_table_remove (priv->device_monitors, &device_id);
+  g_hash_table_remove (priv->device_monitors, device);
 }
 
 static void
 meta_backend_monitor_device (MetaBackend        *backend,
                              ClutterInputDevice *device)
 {
-  int device_id;
-
-  device_id = clutter_input_device_get_device_id (device);
-  create_device_monitor (backend, device_id);
+  create_device_monitor (backend, device);
 }
 
 static void
@@ -357,9 +353,8 @@ on_device_added (ClutterSeat        *seat,
                  gpointer            user_data)
 {
   MetaBackend *backend = META_BACKEND (user_data);
-  int device_id = clutter_input_device_get_device_id (device);
 
-  create_device_monitor (backend, device_id);
+  create_device_monitor (backend, device);
 }
 
 static inline gboolean
@@ -428,9 +423,8 @@ on_device_removed (ClutterSeat        *seat,
 {
   MetaBackend *backend = META_BACKEND (user_data);
   MetaBackendPrivate *priv = meta_backend_get_instance_private (backend);
-  int device_id = clutter_input_device_get_device_id (device);
 
-  destroy_device_monitor (backend, device_id);
+  destroy_device_monitor (backend, device);
 
   /* If the device the user last interacted goes away, check again pointer
    * visibility.
@@ -467,7 +461,8 @@ create_device_monitors (MetaBackend *backend,
 {
   GList *l, *devices;
 
-  create_device_monitor (backend, META_IDLE_MONITOR_CORE_DEVICE);
+  create_device_monitor (backend, clutter_seat_get_pointer (seat));
+  create_device_monitor (backend, clutter_seat_get_keyboard (seat));
 
   devices = clutter_seat_list_devices (seat);
   for (l = devices; l; l = l->next)
@@ -525,8 +520,7 @@ meta_backend_real_post_init (MetaBackend *backend)
   priv->cursor_renderer = META_BACKEND_GET_CLASS (backend)->create_cursor_renderer (backend);
 
   priv->device_monitors =
-    g_hash_table_new_full (g_int_hash, g_int_equal,
-                           NULL, (GDestroyNotify) g_object_unref);
+    g_hash_table_new_full (NULL, NULL, NULL, (GDestroyNotify) g_object_unref);
 
   create_device_monitors (backend, seat);
 
@@ -934,12 +928,12 @@ meta_backend_post_init (MetaBackend *backend)
  * meta_backend_get_idle_monitor: (skip)
  */
 MetaIdleMonitor *
-meta_backend_get_idle_monitor (MetaBackend *backend,
-                               int          device_id)
+meta_backend_get_idle_monitor (MetaBackend        *backend,
+                               ClutterInputDevice *device)
 {
   MetaBackendPrivate *priv = meta_backend_get_instance_private (backend);
 
-  return g_hash_table_lookup (priv->device_monitors, &device_id);
+  return g_hash_table_lookup (priv->device_monitors, device);
 }
 
 /**
diff --git a/src/backends/meta-idle-monitor-dbus.c b/src/backends/meta-idle-monitor-dbus.c
index 8fcc2f25c..f7433068e 100644
--- a/src/backends/meta-idle-monitor-dbus.c
+++ b/src/backends/meta-idle-monitor-dbus.c
@@ -220,7 +220,7 @@ on_device_added (ClutterSeat              *seat,
   char *path;
 
   device_id = clutter_input_device_get_device_id (device);
-  monitor = meta_idle_monitor_get_for_device (device_id);
+  monitor = meta_idle_monitor_get_for_device (device);
   path = g_strdup_printf ("/org/gnome/Mutter/IdleMonitor/Device%d", device_id);
 
   create_monitor_skeleton (manager, monitor, path);
diff --git a/src/backends/meta-idle-monitor-private.h b/src/backends/meta-idle-monitor-private.h
index cc08f8c8e..d498f13f9 100644
--- a/src/backends/meta-idle-monitor-private.h
+++ b/src/backends/meta-idle-monitor-private.h
@@ -45,7 +45,7 @@ struct _MetaIdleMonitor
   GDBusProxy *session_proxy;
   gboolean inhibited;
   GHashTable *watches;
-  int device_id;
+  ClutterInputDevice *device;
   guint64 last_event_time;
 };
 
diff --git a/src/backends/meta-idle-monitor.c b/src/backends/meta-idle-monitor.c
index 4304db142..08835a8f4 100644
--- a/src/backends/meta-idle-monitor.c
+++ b/src/backends/meta-idle-monitor.c
@@ -46,7 +46,7 @@ G_STATIC_ASSERT(sizeof(unsigned long) == sizeof(gpointer));
 enum
 {
   PROP_0,
-  PROP_DEVICE_ID,
+  PROP_DEVICE,
   PROP_LAST,
 };
 
@@ -99,8 +99,8 @@ meta_idle_monitor_get_property (GObject    *object,
 
   switch (prop_id)
     {
-    case PROP_DEVICE_ID:
-      g_value_set_int (value, monitor->device_id);
+    case PROP_DEVICE:
+      g_value_set_object (value, monitor->device);
       break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -117,8 +117,8 @@ meta_idle_monitor_set_property (GObject      *object,
   MetaIdleMonitor *monitor = META_IDLE_MONITOR (object);
   switch (prop_id)
     {
-    case PROP_DEVICE_ID:
-      monitor->device_id = g_value_get_int (value);
+    case PROP_DEVICE:
+      monitor->device = g_value_get_object (value);
       break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -136,17 +136,18 @@ meta_idle_monitor_class_init (MetaIdleMonitorClass *klass)
   object_class->set_property = meta_idle_monitor_set_property;
 
   /**
-   * MetaIdleMonitor:device_id:
+   * MetaIdleMonitor:device:
    *
    * The device to listen to idletime on.
    */
-  obj_props[PROP_DEVICE_ID] =
-    g_param_spec_int ("device-id",
-                      "Device ID",
-                      "The device to listen to idletime on",
-                      0, 255, 0,
-                      G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
-  g_object_class_install_property (object_class, PROP_DEVICE_ID, obj_props[PROP_DEVICE_ID]);
+  obj_props[PROP_DEVICE] =
+    g_param_spec_object ("device",
+                         "Device",
+                         "The device to listen to idletime on",
+                         CLUTTER_TYPE_INPUT_DEVICE,
+                         G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY);
+
+  g_object_class_install_property (object_class, PROP_DEVICE, obj_props[PROP_DEVICE]);
 }
 
 static void
@@ -276,22 +277,25 @@ MetaIdleMonitor *
 meta_idle_monitor_get_core (void)
 {
   MetaBackend *backend = meta_get_backend ();
-  return meta_backend_get_idle_monitor (backend, 0);
+  ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend);
+  ClutterSeat *seat = clutter_backend_get_default_seat (clutter_backend);
+
+  return meta_backend_get_idle_monitor (backend, clutter_seat_get_pointer (seat));
 }
 
 /**
  * meta_idle_monitor_get_for_device:
- * @device_id: the device to get the idle time for.
+ * @device: the device to get the idle time for.
  *
  * Returns: (transfer none): a new #MetaIdleMonitor that tracks the
  * device-specific idletime for @device. To track server-global idletime
  * for all devices, use meta_idle_monitor_get_core().
  */
 MetaIdleMonitor *
-meta_idle_monitor_get_for_device (int device_id)
+meta_idle_monitor_get_for_device (ClutterInputDevice *device)
 {
   MetaBackend *backend = meta_get_backend ();
-  return meta_backend_get_idle_monitor (backend, device_id);
+  return meta_backend_get_idle_monitor (backend, device);
 }
 
 static guint32
diff --git a/src/backends/x11/meta-backend-x11.c b/src/backends/x11/meta-backend-x11.c
index 75a42bf80..9505f7de4 100644
--- a/src/backends/x11/meta-backend-x11.c
+++ b/src/backends/x11/meta-backend-x11.c
@@ -157,6 +157,9 @@ handle_alarm_notify (MetaBackend           *backend,
   MetaBackendX11Private *priv = meta_backend_x11_get_instance_private (x11);
   MetaIdleMonitor *idle_monitor;
   XSyncAlarmAttributes attr;
+  ClutterBackend *clutter_backend;
+  ClutterSeat *seat;
+  ClutterInputDevice *pointer;
 
   if (alarm_event->state != XSyncAlarmActive ||
       alarm_event->alarm != priv->user_active_alarm)
@@ -166,7 +169,10 @@ handle_alarm_notify (MetaBackend           *backend,
   XSyncChangeAlarm (priv->xdisplay, priv->user_active_alarm,
                     XSyncCAEvents, &attr);
 
-  idle_monitor = meta_backend_get_idle_monitor (backend, 0);
+  clutter_backend = meta_backend_get_clutter_backend (backend);
+  seat = clutter_backend_get_default_seat (clutter_backend);
+  pointer = clutter_seat_get_pointer (seat);
+  idle_monitor = meta_backend_get_idle_monitor (backend, pointer);
   meta_idle_monitor_reset_idletime (idle_monitor);
 }
 
diff --git a/src/core/events.c b/src/core/events.c
index 65a7792ee..6b57f4f5f 100644
--- a/src/core/events.c
+++ b/src/core/events.c
@@ -103,7 +103,6 @@ handle_idletime_for_event (const ClutterEvent *event)
 {
   ClutterInputDevice *device, *source_device;
   MetaIdleMonitor *core_monitor, *device_monitor;
-  int device_id;
 
   device = clutter_event_get_device (event);
   if (device == NULL)
@@ -118,10 +117,8 @@ handle_idletime_for_event (const ClutterEvent *event)
       event->type == CLUTTER_DELETE)
     return;
 
-  device_id = clutter_input_device_get_device_id (device);
-
   core_monitor = meta_idle_monitor_get_core ();
-  device_monitor = meta_idle_monitor_get_for_device (device_id);
+  device_monitor = meta_idle_monitor_get_for_device (device);
 
   meta_idle_monitor_reset_idletime (core_monitor);
   meta_idle_monitor_reset_idletime (device_monitor);
@@ -129,8 +126,7 @@ handle_idletime_for_event (const ClutterEvent *event)
   source_device = clutter_event_get_source_device (event);
   if (source_device != device)
     {
-      device_id = clutter_input_device_get_device_id (device);
-      device_monitor = meta_idle_monitor_get_for_device (device_id);
+      device_monitor = meta_idle_monitor_get_for_device (source_device);
       meta_idle_monitor_reset_idletime (device_monitor);
     }
 }
diff --git a/src/meta/meta-idle-monitor.h b/src/meta/meta-idle-monitor.h
index 6ef4eab00..51902a17f 100644
--- a/src/meta/meta-idle-monitor.h
+++ b/src/meta/meta-idle-monitor.h
@@ -44,7 +44,7 @@ META_EXPORT
 MetaIdleMonitor *meta_idle_monitor_get_core (void);
 
 META_EXPORT
-MetaIdleMonitor *meta_idle_monitor_get_for_device (int device_id);
+MetaIdleMonitor *meta_idle_monitor_get_for_device (ClutterInputDevice *device);
 
 META_EXPORT
 guint         meta_idle_monitor_add_idle_watch        (MetaIdleMonitor          *monitor,