make corona's offscreenwidgets list accessible, don't reposition

containments that are in offscreen widgets

svn path=/trunk/KDE/kdelibs/; revision=950841

containment.cpp

@@ -1781,7 +1781,8 @@ void ContainmentPrivate::positionContainments()
     while (it.hasNext()) {
         Containment *containment = it.next();
         if (containment->d->type == Containment::PanelContainment ||
-            containment->d->type == Containment::CustomPanelContainment) {
+            containment->d->type == Containment::CustomPanelContainment ||
+            q->corona()->offscreenWidgets().contains(containment)) {
             // weed out all containments we don't care about at all
             // e.g. Panels and ourself
             it.remove();

corona.cpp

@@ -426,6 +426,11 @@ void Corona::removeOffscreenWidget(QGraphicsWidget *widget)
     }
 }
 
+QList <QGraphicsWidget *> Corona::offscreenWidgets() const
+{
+    return d->offscreenWidgets.values();
+}
+
 void CoronaPrivate::offscreenWidgetDestroyed(QObject *o)
 {
     // at this point, it's just a QObject, not a QGraphicsWidget, but we still need

corona.h

@@ -114,6 +114,12 @@ public:
      */
     void removeOffscreenWidget(QGraphicsWidget *widget);
 
+    /**
+     * @return the list of all offscreen widgets
+     * @since 4.3
+     */
+    QList <QGraphicsWidget *> offscreenWidgets() const;
+
     /**
      * Returns the number of screens available to plasma.
      * Subclasses should override this method as the default