[clutter/deprecate-default-stage: 13/14] evdev: don't even process events without a default stage

[Emmanuele Bassi <ebassi src gnome org>]

commit 5705d08b5d50901e2f752a505e7daab3e98696ae
Author: Lionel Landwerlin <lionel g landwerlin linux intel com>
Date:   Fri Jun 17 11:31:34 2011 +0100

    evdev: don't even process events without a default stage
    
    The evdev system is a bit different from other input systems in
    Clutter because it's completly decorrelated from anything graphic.
    
    In the case of embedded devices with no proper windowing system, you
    might want to not implicitly create a default stage when you're
    receiving the first input event.
    
    This patch changes this behavior by not forwarding any event if you
    don't have a default stage.
    
    Signed-off-by: Lionel Landwerlin <lionel g landwerlin linux intel com>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=651718

 clutter/evdev/clutter-device-manager-evdev.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/clutter/evdev/clutter-device-manager-evdev.c b/clutter/evdev/clutter-device-manager-evdev.c
index 26079f1..80c0698 100644
--- a/clutter/evdev/clutter-device-manager-evdev.c
+++ b/clutter/evdev/clutter-device-manager-evdev.c
@@ -44,6 +44,7 @@
 #include "clutter-input-device-evdev.h"
 #include "clutter-main.h"
 #include "clutter-private.h"
+#include "clutter-stage-manager.h"
 #include "clutter-xkb-utils.h"
 
 #include "clutter-device-manager-evdev.h"
@@ -268,9 +269,14 @@ clutter_event_dispatch (GSource     *g_source,
   ClutterEvent *event;
   gint len, i, dx = 0, dy = 0;
   uint32_t _time;
+  ClutterStageManager *stage_manager;
+  ClutterStage *default_stage;
 
   clutter_threads_enter ();
 
+  stage_manager = clutter_stage_manager_get_default ();
+  default_stage = clutter_stage_manager_get_default_stage (stage_manager);
+
   /* Don't queue more events if we haven't finished handling the previous batch
    */
   if (!clutter_events_pending ())
@@ -303,6 +309,10 @@ clutter_event_dispatch (GSource     *g_source,
          goto out;
        }
 
+       /* Drop events if we don't have any stage to forward them to */
+       if (!default_stage)
+         goto out;
+
        for (i = 0; i < len / sizeof (ev[0]); i++)
          {
            struct input_event *e = &ev[i];