1  QQuickItemPrivate::itemToWindowTransform         qquickitem.cpp             3059 0x7ffff2660418 
2  QQuickItemPrivate::itemToWindowTransform         qquickitem.cpp             3059 0x7ffff2660421 
3  QQuickItemPrivate::itemToWindowTransform         qquickitem.cpp             3059 0x7ffff2660421 
4  QQuickItemPrivate::itemToWindowTransform         qquickitem.cpp             3059 0x7ffff2660421 
5  QQuickItemPrivate::itemToWindowTransform         qquickitem.cpp             3059 0x7ffff2660421 
6  QQuickItemPrivate::itemToWindowTransform         qquickitem.cpp             3059 0x7ffff2660421 
7  QQuickItemPrivate::itemToWindowTransform         qquickitem.cpp             3059 0x7ffff2660421 
8  QQuickItemPrivate::itemToWindowTransform         qquickitem.cpp             3059 0x7ffff2660421 
9  QQuickItemPrivate::itemToWindowTransform         qquickitem.cpp             3059 0x7ffff2660421 
10 QQuickItemPrivate::itemToWindowTransform         qquickitem.cpp             3059 0x7ffff2660421 
11 QQuickItemPrivate::itemToWindowTransform         qquickitem.cpp             3059 0x7ffff2660421 
12 QQuickItemPrivate::itemToWindowTransform         qquickitem.cpp             3059 0x7ffff2660421 
13 QQuickItemPrivate::itemToWindowTransform         qquickitem.cpp             3059 0x7ffff2660421 
14 QQuickItemPrivate::windowToItemTransform         qquickitem.cpp             3050 0x7ffff2660461 
15 QQuickItem::mapFromScene                         qquickitem.cpp             7984 0x7ffff2664095 
16 QQuickEventPoint::localizePosition               qquickevents.cpp           863  0x7ffff264bdcd 
17 QQuickPointerTouchEvent::localize                qquickevents.cpp           1466 0x7ffff264c3b7 
18 QQuickWindowPrivate::deliverMatchingPointsToItem qquickwindow.cpp           2867 0x7ffff26875be 
19 QQuickWindowPrivate::deliverPressOrReleaseEvent  qquickwindow.cpp           2855 0x7ffff2688623 
20 QQuickWindowPrivate::deliverTouchEvent           qquickwindow.cpp           2704 0x7ffff26894df 
21 QQuickWindowPrivate::deliverPointerEvent         qquickwindow.cpp           2620 0x7ffff2689f3f 
22 QQuickWindowPrivate::handleTouchEvent            qquickwindow.cpp           2381 0x7ffff268aaf9 
23 QQuickWindow::event                              qquickwindow.cpp           1788 0x7ffff268c530 
24 QApplicationPrivate::notify_helper               qapplication.cpp           3632 0x7ffff16ac43c 
25 QApplication::notify                             qapplication.cpp           3378 0x7ffff16b2f20 
26 QCoreApplication::notifyInternal2                qcoreapplication.cpp       1063 0x7ffff06bf808 
27 QCoreApplication::sendSpontaneousEvent           qcoreapplication.cpp       1470 0x7ffff06bf9ce 
28 QGuiApplicationPrivate::processTouchEvent        qguiapplication.cpp        3056 0x7ffff0d862ac 
29 QGuiApplicationPrivate::processWindowSystemEvent qguiapplication.cpp        2011 0x7ffff0d88925 
30 QWindowSystemInterface::sendWindowSystemEvents   qwindowsysteminterface.cpp 1169 0x7ffff0d648ab 
31 xcbSourceDispatch                                qxcbeventdispatcher.cpp    105  0x7fffe1b1869a 
32 g_main_context_dispatch                                                          0x7fffed6e3537 
33 ??                                                                               0x7fffed6e3770 
34 g_main_context_iteration                                                         0x7fffed6e37fc 
35 QEventDispatcherGlib::processEvents              qeventdispatcher_glib.cpp  423  0x7ffff071b1cc 
36 QEventLoop::exec                                 qeventloop.cpp             232  0x7ffff06be21a 
37 QCoreApplication::exec                           qcoreapplication.cpp       1371 0x7ffff06c71d3 
38 main                                             main.cpp                   239  0x5555555b0dec