Ignore synthesized mouse move events whithout the left mouse
button pressed. We receive such mouse move event on touch
before the mouse press event, it causes the menu to show
and then the subsequent mouse press event closes the menu.
Also don't propagate mouse events after closing a popup
to another popup, because they may close the latter one.
Change-Id: I50a2d9b57da63d33ffe416161a09f1696d65c88f
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
c5307203f5