Qt/EPG: Try to display intelligently the short and long event description with...

Qt/EPG: Try to display intelligently the short and long event description with the dedicated widgets.

It depends of the channels. Some use only the short one, others only the long one and others both.
(cherry picked from commit ec1859e9991185b43b3b05815654e8326dd6728c)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/gui/qt4/dialogs/epg.cpp

@@ -94,14 +94,22 @@ void EpgDialog::showEvent( EPGEvent *event )
 {
     if( !event ) return;
 
+    QString titleDescription, textDescription;
+    if( event->description.isEmpty() )
+        textDescription = event->shortDescription;
+    else
+    {
+        textDescription = event->description;
+        if( !event->shortDescription.isEmpty() )
+            titleDescription = " - " + event->shortDescription;
+    }
+
     QDateTime end = event->start.addSecs( event->duration );
     title->setText( event->start.toString( "hh:mm" ) + " - "
                     + end.toString( "hh:mm" ) + " : "
-                    + event->name
-                    + ( event->shortDescription.isEmpty()
-                        ? "" : " - " + event->shortDescription ) );
+                    + event->name + titleDescription );
 
-    description->setText( event->description );
+    description->setText( textDescription );
 }
 
 void EpgDialog::updateInfos()