QmlDesigner: Fix shift modifer in layout case

The move tool normally does not reparent, but by pressing shift the user
can enforce reparenting. In the drag tool we prefer to reparent to layouts.
The shoft modifer disables this heuristic.


Task-number: QTCREATORBUG-18737
Change-Id: Ic8041aed537619b16b892a791c0d2bc2390af204
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/qmldesigner/components/formeditor/movemanipulator.cpp

@@ -332,7 +332,7 @@ void MoveManipulator::clear()
     m_beginVerticalCenterHash.clear();
 }
 
-void MoveManipulator::reparentTo(FormEditorItem *newParent)
+void MoveManipulator::reparentTo(FormEditorItem *newParent, ReparentFlag flag)
 {
     deleteSnapLines();
 
@@ -348,7 +348,8 @@ void MoveManipulator::reparentTo(FormEditorItem *newParent)
             && newParent->qmlItemNode().modelNode().hasParentProperty()) {
         ModelNode grandParent = newParent->qmlItemNode().modelNode().parentProperty().parentModelNode();
         if (grandParent.metaInfo().isLayoutable()
-                && !NodeHints::fromModelNode(grandParent).isStackedContainer())
+                && !NodeHints::fromModelNode(grandParent).isStackedContainer()
+                && flag == DoNotEnforceReparent)
             newParent = m_view.data()->scene()->itemForQmlItemNode(QmlItemNode(grandParent));
     }
 

src/plugins/qmldesigner/components/formeditor/movemanipulator.h

@@ -48,6 +48,11 @@ public:
         UseBaseState
     };
 
+    enum ReparentFlag {
+        DoNotEnforceReparent,
+        EnforceReparent
+    };
+
     MoveManipulator(LayerItem *layerItem, FormEditorView *view);
     ~MoveManipulator();
     void setItems(const QList<FormEditorItem*> &itemList);
@@ -57,7 +62,7 @@ public:
 
     void begin(const QPointF& beginPoint);
     void update(const QPointF& updatePoint, Snapper::Snapping useSnapping, State stateToBeManipulated = UseCurrentState);
-    void reparentTo(FormEditorItem *newParent);
+    void reparentTo(FormEditorItem *newParent, ReparentFlag flag = DoNotEnforceReparent);
     void end();
     void end(Snapper::Snapping useSnapping);
 

src/plugins/qmldesigner/components/formeditor/movetool.cpp

@@ -113,7 +113,7 @@ void MoveTool::mouseMoveEvent(const QList<QGraphicsItem*> &itemList,
 
                 if (m_movingItems.count() > 1
                         || (movingItem->qmlItemNode().canBereparentedTo(containerItem->qmlItemNode())))
-                        m_moveManipulator.reparentTo(containerItem);
+                        m_moveManipulator.reparentTo(containerItem, MoveManipulator::EnforceReparent);
             }
         }