3 files changed, 18 insertions, 0 deletions
diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp
index 4f77aa8..280c365 100644
--- a/src/gui/graphicsview/qgraphicsitem.cpp
+++ b/src/gui/graphicsview/qgraphicsitem.cpp
@@ -1262,6 +1262,9 @@ void QGraphicsItem::setFlags(GraphicsItemFlags flags)
         d_ptr->updateAncestorFlag(ItemClipsChildrenToShape);
     }
 
+    if (d_ptr->scene && oldFlags & ItemClipsChildrenToShape)
+        d_ptr->scene->d_func()->addToUnindexedItems(this);
+
     if ((flags & ItemClipsToShape) != (oldFlags & ItemClipsToShape))
         d_ptr->invalidateCachedClipPath();
 
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp
index 0fded89..5c3e9bd 100644
--- a/src/gui/graphicsview/qgraphicsscene.cpp
+++ b/src/gui/graphicsview/qgraphicsscene.cpp
@@ -448,6 +448,20 @@ void QGraphicsScenePrivate::addToIndex(QGraphicsItem *item)
 /*!
     \internal
 */
+void QGraphicsScenePrivate::addToUnindexedItems(QGraphicsItem *item)
+{
+    if (indexMethod == QGraphicsScene::BspTreeIndex) {
+        item->d_func()->index = -1;
+        unindexedItems << item;
+
+        for (int i = 0 ; i < item->d_ptr->children.size() ; ++i)
+            addToUnindexedItems(item->d_ptr->children.at(i));
+    }
+}
+
+/*!
+    \internal
+*/
 void QGraphicsScenePrivate::removeFromIndex(QGraphicsItem *item)
 {
     if (indexMethod == QGraphicsScene::BspTreeIndex) {
diff --git a/src/gui/graphicsview/qgraphicsscene_p.h b/src/gui/graphicsview/qgraphicsscene_p.h
index 3c72874..62bcbfb 100644
--- a/src/gui/graphicsview/qgraphicsscene_p.h
+++ b/src/gui/graphicsview/qgraphicsscene_p.h
@@ -89,6 +89,7 @@ public:
     QList<QGraphicsItem *> estimateItemsInRect(const QRectF &rect) const;
     void addToIndex(QGraphicsItem *item);
     void removeFromIndex(QGraphicsItem *item);
+    void addToUnindexedItems(QGraphicsItem *item);
     void resetIndex();
 
     QGraphicsSceneBspTree bspTree;