const PointerDownEvent({Duration timeStamp: Duration.ZERO, int pointer: 0, PointerDeviceKind kind: PointerDeviceKind.touch, int device: 0, Point position: Point.origin, int buttons: 0, bool obscured: false, double pressure: 1.0, double pressureMin: 1.0, double pressureMax: 1.0, double distanceMax: 0.0, double radiusMajor: 0.0, double radiusMinor: 0.0, double radiusMin: 0.0, double radiusMax: 0.0, double orientation: 0.0, double tilt: 0.0 })

Creates a pointer down event.

All of the argument must be non-null.

Source 

const PointerDownEvent({
  Duration timeStamp: Duration.ZERO,
  int pointer: 0,
  PointerDeviceKind kind: PointerDeviceKind.touch,
  int device: 0,
  Point position: Point.origin,
  int buttons: 0,
  bool obscured: false,
  double pressure: 1.0,
  double pressureMin: 1.0,
  double pressureMax: 1.0,
  double distanceMax: 0.0,
  double radiusMajor: 0.0,
  double radiusMinor: 0.0,
  double radiusMin: 0.0,
  double radiusMax: 0.0,
  double orientation: 0.0,
  double tilt: 0.0
}) : super(
  timeStamp: timeStamp,
  pointer: pointer,
  kind: kind,
  device: device,
  position: position,
  buttons: buttons,
  down: true,
  obscured: obscured,
  pressure: pressure,
  pressureMin: pressureMin,
  pressureMax: pressureMax,
  distance: 0.0,
  distanceMax: distanceMax,
  radiusMajor: radiusMajor,
  radiusMinor: radiusMinor,
  radiusMin: radiusMin,
  radiusMax: radiusMax,
  orientation: orientation,
  tilt: tilt
);