gdev_annuaire/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:hive_flutter/hive_flutter.dart';
import 'package:qr_flutter/qr_flutter.dart';
import 'package:truncate/truncate.dart';

late Box addressBox;
List profiles = [];

Future<void> main() async {
  await Hive.initFlutter();
  addressBox = await Hive.openBox("addressBox");
  // await addressBox.clear();
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'ĞDev annuaire',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'ĞDev annuaire'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  refresh() {
    setState(() {});
  }

  @override
  Widget build(BuildContext context) {
    profiles.clear();
    addressBox.toMap().forEach((key, value) {
      profiles.add(value);
    });

    return Scaffold(
      backgroundColor: Colors.orange[200],
      body: profileTiles(context, profiles, refresh),
    );
  }
}

Widget profileTiles(BuildContext context, List profiles, refresh) {
  final double screenWidth = MediaQuery.of(context).size.width;
  int nbrColumn = 9;
  TextEditingController nameController = TextEditingController();
  TextEditingController addressController = TextEditingController();

  if (screenWidth <= 600) {
    nbrColumn = 1;
  } else if (screenWidth <= 900) {
    nbrColumn = 2;
  } else if (screenWidth <= 1200) {
    nbrColumn = 3;
  } else if (screenWidth <= 1500) {
    nbrColumn = 4;
  } else if (screenWidth <= 1800) {
    nbrColumn = 5;
  } else if (screenWidth <= 2100) {
    nbrColumn = 6;
  } else if (screenWidth <= 2400) {
    nbrColumn = 7;
  } else if (screenWidth <= 2700) {
    nbrColumn = 8;
  }

  return CustomScrollView(slivers: <Widget>[
    const SliverToBoxAdapter(child: SizedBox(height: 20)),
    SliverToBoxAdapter(
        child: Row(
      children: [
        const SizedBox(width: 20),
        SizedBox(
          width: 150,
          child: TextField(
            controller: nameController,
            decoration: const InputDecoration(
              hintText: "Nom",
            ),
          ),
        ),
        const SizedBox(width: 20),
        SizedBox(
          width: 470,
          child: TextField(
            controller: addressController,
            decoration: const InputDecoration(
              hintText: "Adresse",
            ),
          ),
        ),
        const SizedBox(width: 20),
        IconButton(
          icon: const Icon(Icons.add_reaction_outlined),
          onPressed: (() async {
            await addProfile(nameController.text, addressController.text);
            refresh();
          }),
        ),
      ],
    )),
    SliverGrid.count(
        key: const Key('listWallets'),
        crossAxisCount: nbrColumn,
        childAspectRatio: 1,
        crossAxisSpacing: 0,
        mainAxisSpacing: 0,
        children: <Widget>[
          for (String profile in profiles)
            Container(
              color: Colors.orange[200],
              child: Padding(
                padding: const EdgeInsets.all(10),
                child: Container(
                  color: Colors.orange[100],
                  child: Padding(
                    padding: const EdgeInsets.all(10),
                    child: tile(
                        context, profile.split(':')[0], profile.split(':')[1]),
                  ),
                ),
              ),
            ),
        ]),
  ]);
}

Widget tile(BuildContext context, String name, String address) {
  return Container(
    color: Colors.orange[50],
    child: Padding(
        padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 10),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            Text(name),
            const SizedBox(height: 3),
            InkWell(
              onTap: () => snackCopyKey(context, address),
              child: Text(getShortPubkey(address)),
            ),
            QrImageWidget(
              // gapless: false,
              data: address,
              version: QrVersions.auto,
              size: 200,
            ),
          ],
        )),
  );
}

String getShortPubkey(String pubkey) {
  String pubkeyShort = truncate(pubkey, 7,
          omission: String.fromCharCode(0x2026),
          position: TruncatePosition.end) +
      truncate(pubkey, 6, omission: "", position: TruncatePosition.start);
  return pubkeyShort;
}

snackCopyKey(BuildContext context, String address) {
  // _copyToClipboardHack(address);
  Clipboard.setData(ClipboardData(text: address));

  const snackBar = SnackBar(
      padding: EdgeInsets.all(20),
      content: Text("Cette adresse a été copié dans votre presse-papier.",
          style: TextStyle(fontSize: 16)),
      duration: Duration(seconds: 2));
  ScaffoldMessenger.of(context).showSnackBar(snackBar);
}

Future addProfile(String name, String address) async {
  await addressBox.add('$name:$address');
}