healthrian_visualization_support 2.7.11

Healthrian visualization support library

example/lib/main.dart

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:healthrian_ble_support_for_cardio_em/healthrian_ble_support_for_cardio_em.dart' as ble;
import 'package:healthrian_ble_support_for_cardio_em_cdc/healthrian_ble_support_for_cardio_em_cdc.dart' as usb;
import 'package:healthrian_visualization_support/healthrian_visualization_support.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) => const MaterialApp(home: MyHomePage());
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key});

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  ble.ManagerInterface _manager = ble.BLEManager();

  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: Scaffold(
        body: Column(
          children: [
            ConnectionMonitor(module: _manager.module),
            HeartRateMonitor(module: _manager.module, isUsingMean: false),
            LeadstateMonitor(module: _manager.module),
            SamplingRateMonitor(module: _manager.module),
            EcgMonitor(module: _manager.module, isHeartRate: true),
            Expanded(
              child: SingleChildScrollView(
                child: EcgMonitor(module: _manager.module),
              ),
            ),
          ],
        ),
        floatingActionButton: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            ControlPanel(module: _manager.module),
            SizedBox(height: 10),
            FloatingActionButton(
              onPressed: () {
                if (_manager is ble.BLEManager) {
                  _manager = usb.BLEManager();
                  usb.BLEManager().module.ecg?.samplingRate = usb.SamplingRate.freq500hz;
                  setState(() {});
                  return;
                }
                if (_manager is usb.BLEManager) {
                  _manager = ble.BLEManager();
                  setState(() {});
                  return;
                }
              },
              backgroundColor: Colors.white,
              child: Icon(
                _manager is usb.BLEManager ? Icons.usb : Icons.bluetooth_audio_rounded,
                color: _manager is usb.BLEManager ? Colors.black : Colors.blueAccent,
              ),
            ),
            if (_manager is usb.BLEManager)
              Column(
                children: [
                  SizedBox(height: 10),
                  FloatingActionButton(
                    onPressed: () async {
                      await usb.BLEManager().stopMeasurement();
                      final samplingRateList = usb.SamplingRate.values;
                      final currentIndex = samplingRateList
                          .indexOf(usb.BLEManager().module.ecg?.samplingRate ?? usb.SamplingRate.freq500hz);
                      final nextIndex = (currentIndex + 1) % samplingRateList.length;
                      usb.BLEManager().module.ecg?.samplingRate = usb.SamplingRate.values[nextIndex];
                      setState(() {});
                    },
                    backgroundColor: Colors.white,
                    child: Text('${usb.BLEManager().module.ecg?.samplingRate.sps}Hz'),
                  )
                ],
              ),
            if (_manager is ble.BLEManager)
              Column(
                children: [
                  SizedBox(height: 10),
                  FloatingActionButton(
                    onPressed: () async {
                      await ble.BLEManager().stopMeasurement();
                      final samplingRateList = ble.SamplingRate.values;
                      final currentIndex = samplingRateList
                          .indexOf(ble.BLEManager().module.ecg?.samplingRate ?? ble.SamplingRate.freq500hz);
                      final nextIndex = (currentIndex + 1) % samplingRateList.length;
                      ble.BLEManager().module.ecg?.samplingRate = usb.SamplingRate.values[nextIndex];
                      setState(() {});
                    },
                    backgroundColor: Colors.white,
                    child: Text(
                      '${ble.BLEManager().module.ecg?.samplingRate.sps}Hz',
                      style: TextStyle(color: Colors.blueAccent),
                    ),
                  )
                ],
              ),
            // SizedBox(height: 10),
            // FloatingActionButton(
            //   onPressed: () async {
            //     _subscription?.cancel();
            //     for (var i = 0; i < 100; i++) {
            //       final file = File(
            //           'ECG-PACKET-$i-${DateTime.now().toIso8601String().replaceAll(':', '-').split('.').first}.txt');
            //       _subscription = _manager.ble.streams.ecg.meta.raw?.listen((event) {
            //         file.writeAsStringSync('$event\n', mode: FileMode.writeOnlyAppend);
            //       });
            //       await Future.delayed(Duration(seconds: 30));
            //       _subscription?.cancel();
            //       print(file.path);
            //     }
            //   },
            //   child: Icon(Icons.emergency_recording),
            // ),
            // SizedBox(height: 10),
            // FloatingActionButton(
            //   onPressed: () async {
            //     final dbs = [
            //       'CTSCSE_CAL10000',
            //       'CTSCSE_CAL20000',
            //       'CTSCSE_CAL20110',
            //       'CTSCSE_CAL20210',
            //       'CTSCSE_CAL20160',
            //       'CTSCSE_CAL20260',
            //     ];
            //     for (final db in dbs) {
            //       _manager.ecg?.callbacks.clear();
            //       _manager.ecg?.callbacks.add(
            //         (
            //           (ecg, filter) {
            //             final file = File('$db.json');
            //             final map = {
            //               'l1': ecg.l1,
            //               'l2': ecg.l2,
            //               'l3': ecg.l3,
            //               'aVR': ecg.aVR,
            //               'aVL': ecg.aVL,
            //               'aVF': ecg.aVF,
            //               'v1': ecg.v1,
            //               'v2': ecg.v2,
            //               'v3': ecg.v3,
            //               'v4': ecg.v4,
            //               'v5': ecg.v5,
            //               'v6': ecg.v6,
            //             };
            //             final mapAsJson = jsonEncode(map);
            //             file.writeAsString(mapAsJson);
            //             print(DateTime.now());
            //           },
            //           250 * 20,
            //         ),
            //       );
            //
            //       final url = Uri.parse('http://127.0.0.1:20001/jsonrpc');
            //       final body = {
            //         "id": 2,
            //         "jsonrpc": "2.0",
            //         "method": "load_db",
            //         "params": [
            //           {
            //             "db": db,
            //             "noise": "CTSCSENoise_MAX",
            //           }
            //         ]
            //       };
            //       final response = await http.post(
            //         url,
            //         body: jsonEncode(body),
            //       );
            //       print(response.body);
            //
            //       await _manager.startMeasurement();
            //
            //       await Future.delayed(const Duration(seconds: 22));
            //
            //       await _manager.stopMeasurement();
            //     }
            //   },
            // ),
          ],
        ),
      ),
    );
  }
}