currentPosition method

Future<FPosition<double>?> currentPosition()

获取 Floating 位置（异步实现）：发送 setPoint 命令并等待视图返回 Point

Implementation

Future<FPosition<double>?> currentPosition() async {
  final c = Completer<dynamic>();
  final cmd = _ControllerCommand(ControllerEnumType.getPoint, completer: c);
  try {
    _commandController.add(cmd);
  } catch (_) {
    c.complete(null);
  }
  if (!_hasListeners) c.complete(null);
  final res = await c.future;
  return res is FPosition<double> ? res : null;
}