qt4: attempt to work around a design flaw in the toolbar editor

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/gui/qt4/dialogs/toolbar.cpp

@@ -672,6 +672,11 @@ void DroppingController::dropEvent( QDropEvent *event )
 {
     int i = getParentPosInLayout( event->pos() );
 
+    /* Workaround: do not let the item move to its current
+       position + 1 as it breaks the widgetList */
+    if ( i - 1 == i_dragIndex )
+        --i;
+
     QByteArray data = event->mimeData()->data( "vlc/button-bar" );
     QDataStream dataStream(&data, QIODevice::ReadOnly);
 
@@ -727,6 +732,8 @@ bool DroppingController::eventFilter( QObject *obj, QEvent *event )
             }
 
             if( i == -1 ) return true;
+            i_dragIndex = i;
+
             doubleInt *dI = widgetList.at( i );
 
             int i_type = dI->i_type;

modules/gui/qt4/dialogs/toolbar.hpp

@@ -112,6 +112,7 @@ private:
     };
     QRubberBand *rubberband;
     QList <doubleInt *> widgetList;
+    int i_dragIndex;
 
     int getParentPosInLayout( QPoint point);