kmilo: improve brightness OSD feedback by displaying the actual value. This may differ from the set value on machines with few brightness steps capability

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit 3c455c1772)

kmilo/generic/generic_monitor.cpp

@@ -303,10 +303,21 @@ void GenericMonitor::brightnessChange(int direction, int step)
 			{
 				tdepowersave->send("do_brightnessDown", step);
 			}
+
+			DCOPReply reply = tdepowersave->call("brightnessGet");
+			if (reply.isValid())
+			{
+				// Display real brightness value. This may differ from the set value
+				// on machines with few brightness steps.
+				_interface->displayProgress(i18n("Brightness"), (int)reply);
+			}
+			else
+			{
 				_interface->displayProgress(i18n("Brightness"), brightnessLevel);
 			}
 		}
 	}
+}
 
 int GenericMonitor::progress() const
 {