QSensorGestureRecognizer needs 'state'

    enum SensorGestureRecognizerState {
        AvailableState = 0, // waiting for gesture detection start
        DetectingState, // possible gesture detected /started
        RecognizedState, // gesture has been recognized
        CancelledState, // gesture was cancelled
        FailedState // gesture failed.
        ErrorState // there was an error
    };

    SensorGestureRecognizerState currentState();
    void setCurrentState(SensorGestureRecognizerState state);

void stateChanged(SensorGestureRecognizerState state);