[clutter/clutter-1.20] input-device: Reset the focused actor when it becomes unreactive

[Emmanuele Bassi <ebassi src gnome org>]

commit c3004bbf42f5c046355e5d35a618af51494d15da
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Wed Oct 8 12:11:51 2014 -0700

    input-device: Reset the focused actor when it becomes unreactive
    
    https://bugzilla.gnome.org/show_bug.cgi?id=743865
    (cherry picked from commit 6c057e3171607d3cbfa61ec57c1fff6c5d72b14c)
    Signed-off-by: Emmanuele Bassi <ebassi gnome org>

 clutter/clutter-input-device.c |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)
---
diff --git a/clutter/clutter-input-device.c b/clutter/clutter-input-device.c
index b7de586..49bcfae 100644
--- a/clutter/clutter-input-device.c
+++ b/clutter/clutter-input-device.c
@@ -551,6 +551,9 @@ _clutter_input_device_get_actor (ClutterInputDevice   *device,
 
 static void on_cursor_actor_destroy (ClutterActor       *actor,
                                      ClutterInputDevice *device);
+static void on_cursor_actor_reactive_changed (ClutterActor       *actor,
+                                              GParamSpec         *pspec,
+                                              ClutterInputDevice *device);
 
 static void
 _clutter_input_device_associate_actor (ClutterInputDevice   *device,
@@ -576,6 +579,9 @@ _clutter_input_device_associate_actor (ClutterInputDevice   *device,
   g_signal_connect (actor,
                     "destroy", G_CALLBACK (on_cursor_actor_destroy),
                     device);
+  g_signal_connect (actor,
+                    "notify::reactive", G_CALLBACK (on_cursor_actor_reactive_changed),
+                    device);
   _clutter_actor_set_has_pointer (actor, TRUE);
 }
 
@@ -610,6 +616,9 @@ _clutter_input_device_unassociate_actor (ClutterInputDevice   *device,
       g_signal_handlers_disconnect_by_func (actor,
                                             G_CALLBACK (on_cursor_actor_destroy),
                                             device);
+      g_signal_handlers_disconnect_by_func (actor,
+                                            G_CALLBACK (on_cursor_actor_reactive_changed),
+                                            device);
       _clutter_actor_set_has_pointer (actor, FALSE);
     }
 }
@@ -621,6 +630,15 @@ on_cursor_actor_destroy (ClutterActor       *actor,
   _clutter_input_device_unassociate_actor (device, actor, TRUE);
 }
 
+static void
+on_cursor_actor_reactive_changed (ClutterActor       *actor,
+                                  GParamSpec         *pspec,
+                                  ClutterInputDevice *device)
+{
+  if (!clutter_actor_get_reactive (actor))
+    _clutter_input_device_unassociate_actor (device, actor, FALSE);
+}
+
 /*< private >
  * clutter_input_device_set_actor:
  * @device: a #ClutterInputDevice