Fix ancestor flags that are not correctly update when reparenting.

updateAncestorFlags was not reseting the flags if you change the parent
that have for instance itemsClipChildrenToShape to a new one that
doesn't have that flag.

Task-number:258956
Reviewed-by:bnilsen

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp b/tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp
index 90c4636986..ded8aca440 100644
--- a/tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp
+++ b/tests/auto/qgraphicsitem/tst_qgraphicsitem.cpp
@@ -665,6 +665,22 @@ void tst_QGraphicsItem::flags()
         QApplication::sendEvent(&scene, &event5);
         QCOMPARE(item->pos(), QPointF(10, 10));
     }
+    {
+        QGraphicsItem* clippingParent = new QGraphicsRectItem;
+        clippingParent->setFlag(QGraphicsItem::ItemClipsChildrenToShape, true);
+
+        QGraphicsItem* nonClippingParent = new QGraphicsRectItem;
+        nonClippingParent->setFlag(QGraphicsItem::ItemClipsChildrenToShape, false);
+
+        QGraphicsItem* child = new QGraphicsRectItem(nonClippingParent);
+        QVERIFY(!child->isClipped());
+
+        child->setParentItem(clippingParent);
+        QVERIFY(child->isClipped());
+
+        child->setParentItem(nonClippingParent);
+        QVERIFY(!child->isClipped());
+    }
 }
 
 void tst_QGraphicsItem::toolTip()