Just sending the event to the embedded widget is not enough, we
have to perform hit-testing for the different touch points, and
send the event to the child widget under the point. Fortunately,
QApplicationPrivate::translateRawTouchEvent provides the logic
that generates multiple events for groups of touch points.
Since that helper always sent events spontaneously, add an
optional parameter to allow sending of non-spontaneous events.
Add a test case that simulates touch events to different widget
configurations inside a QGraphicsProxyWidget.
Fixes: QTBUG-67819
Task-number: QTBUG-45737
Pick-to: 6.2 6.1 5.15
Change-Id: Iffd5c84c64ee2ceadc7e31863675fdf227582c81
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
1ecf2212fa