[gnome-control-center] Avoid making lots of DBus calls to set the brightness when the slider changes too quickly

[Rodrigo Moya <rodrigo src gnome org>]

commit 9132f8f2f848ddfb9a9059a64742c179c3181162
Author: Rodrigo Moya <rodrigo gnome-db org>
Date:   Tue Jul 5 16:39:17 2011 +0200

    Avoid making lots of DBus calls to set the brightness when the slider changes
    too quickly
    
    https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/805473

 panels/screen/cc-screen-panel.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/panels/screen/cc-screen-panel.c b/panels/screen/cc-screen-panel.c
index 75fb7ec..a6cc81f 100644
--- a/panels/screen/cc-screen-panel.c
+++ b/panels/screen/cc-screen-panel.c
@@ -221,6 +221,9 @@ brightness_slider_value_changed_cb (GtkRange *range, gpointer user_data)
   CcScreenPanelPrivate *priv = CC_SCREEN_PANEL (user_data)->priv;
 
   /* do not loop */
+  if (priv->setting_brightness)
+    return;
+
   priv->setting_brightness = TRUE;
 
   /* push this to g-p-m */