Fixes: NB#182176 - COREWEB: /usr/bin/sysuid 'QGraphicsScene::mouseGrabberItem'

RevBy: Tomas Junnonen
Details: The check for scene object has been added to avoid crashes in pannable widget.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/corelib/widgets/mpannablewidget.cpp b/src/corelib/widgets/mpannablewidget.cpp
index 4a85e08d..acc03461 100644
--- a/src/corelib/widgets/mpannablewidget.cpp
+++ b/src/corelib/widgets/mpannablewidget.cpp
@@ -188,6 +188,15 @@ void MPannableWidgetPrivate::deliverPressEvent()
         return;
     }
 
+    if (q->scene() == NULL) {
+        // We have been removed from the scene
+        // while waiting for timer to expire.
+        // Reset the states and wait for next events.
+        resetPhysics();
+        resetMouseGrabber();
+        return;
+    }
+
     glass->ungrabMouse();
     q->resendEvent(&pressEvent);
     mouseGrabber = q->scene()->mouseGrabberItem();