onChartTouchInteractionMove property

Occurs when touched and moved on the chart area.

Widget build(BuildContext context) {
   return Container(
       child: SfFunnelChart(
           onChartTouchInteractionMove: (ChartTouchInteractionArgs args){
              print(args.position.dx.toString());
              print(args.position.dy.toString());
            }
       )
   );
}