1 files changed, 4 insertions, 13 deletions
diff --git a/src/gui/kernel/qwindow_p.h b/src/gui/kernel/qwindow_p.h
index b8a9f5d3de..95c6abf428 100644
--- a/src/gui/kernel/qwindow_p.h
+++ b/src/gui/kernel/qwindow_p.h
@@ -123,19 +123,7 @@ public:
 
     void deliverUpdateRequest();
 
-    QPoint globalPosition() const {
-        Q_Q(const QWindow);
-        QPoint offset = q->position();
-        for (const QWindow *p = q->parent(); p; p = p->parent()) {
-            if (p->type() != Qt::ForeignWindow) {
-                offset += p->position();
-            } else { // QTBUG-43252, mapToGlobal() for foreign children.
-                offset += p->mapToGlobal(QPoint(0, 0));
-                break;
-            }
-        }
-        return offset;
-    }
+    QPoint globalPosition() const;
 
     QWindow *topLevelWindow() const;
 
@@ -144,6 +132,9 @@ public:
     void updateVisibility();
     void _q_clearAlert();
 
+    enum SiblingPosition { PositionTop, PositionBottom };
+    void updateSiblingPosition(SiblingPosition);
+
     bool windowRecreationRequired(QScreen *newScreen) const;
     void create(bool recursive);
     void setTopLevelScreen(QScreen *newScreen, bool recreate);