[mutter] backend-native: Reset idle time on lid open events

[Rui Matos <rtcm src gnome org>]

commit 83ce71c3bf4c075f690ab5137ea4b66f668d9d99
Author: Rui Matos <tiagomatos gmail com>
Date:   Wed May 20 17:05:37 2015 +0200

    backend-native: Reset idle time on lid open events
    
    This makes gnome-settings-daemon turn on the backlight and
    gnome-shell's screen shield animate.
    
    Note that on X sessions, gnome-settings-daemon uses the same upower
    property to force an innocuous key event into the X server so that the
    idle time gets reset since Xorg doesn't do this itself on lid events.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=749076

 src/backends/native/meta-backend-native.c |   19 +++++++++++++++++++
 1 files changed, 19 insertions(+), 0 deletions(-)
---
diff --git a/src/backends/native/meta-backend-native.c b/src/backends/native/meta-backend-native.c
index 4c2d6a5..a14bd4c 100644
--- a/src/backends/native/meta-backend-native.c
+++ b/src/backends/native/meta-backend-native.c
@@ -29,6 +29,7 @@
 
 #include <meta/main.h>
 #include <clutter/evdev/clutter-evdev.h>
+#include <libupower-glib/upower.h>
 
 #include "meta-barrier-native.h"
 #include "meta-idle-monitor-native.h"
@@ -40,6 +41,7 @@ struct _MetaBackendNativePrivate
 {
   MetaLauncher *launcher;
   MetaBarrierManagerNative *barrier_manager;
+  UpClient *up_client;
 };
 typedef struct _MetaBackendNativePrivate MetaBackendNativePrivate;
 
@@ -53,10 +55,23 @@ meta_backend_native_finalize (GObject *object)
 
   meta_launcher_free (priv->launcher);
 
+  g_object_unref (priv->up_client);
+
   G_OBJECT_CLASS (meta_backend_native_parent_class)->finalize (object);
 }
 
 static void
+lid_is_closed_changed_cb (UpClient   *client,
+                          GParamSpec *pspec,
+                          gpointer    user_data)
+{
+  if (up_client_get_lid_is_closed (client))
+    return;
+
+  meta_idle_monitor_native_reset_idletime (meta_idle_monitor_get_core ());
+}
+
+static void
 constrain_to_barriers (ClutterInputDevice *device,
                        guint32             time,
                        float              *new_x,
@@ -267,6 +282,10 @@ meta_backend_native_init (MetaBackendNative *native)
   priv->launcher = meta_launcher_new ();
 
   priv->barrier_manager = meta_barrier_manager_native_new ();
+
+  priv->up_client = up_client_new ();
+  g_signal_connect (priv->up_client, "notify::lid-is-closed",
+                    G_CALLBACK (lid_is_closed_changed_cb), NULL);
 }
 
 gboolean