veilid_xterm 4.0.0-veilid.1

Fork of xterm.dart modified to fit the needs of the Veilid project.

example/lib/main.dart

import 'dart:convert';
import 'dart:io';

import 'package:example/src/platform_menu.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_pty/flutter_pty.dart';
import 'package:veilid_xterm/veilid_xterm.dart';

void main() {
  runApp(MyApp());
}

bool get isDesktop {
  if (kIsWeb) return false;
  return [
    TargetPlatform.windows,
    TargetPlatform.linux,
    TargetPlatform.macOS,
  ].contains(defaultTargetPlatform);
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'xterm.dart demo',
      debugShowCheckedModeBanner: false,
      home: AppPlatformMenu(child: Home()),
      // shortcuts: ,
    );
  }
}

class Home extends StatefulWidget {
  Home({super.key});

  @override
  // ignore: library_private_types_in_public_api
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<Home> with TickerProviderStateMixin {
  final terminal = Terminal(
    maxLines: 10000,
  );

  late final terminalController = TerminalController(vsync: this);

  late final Pty pty;

  @override
  void initState() {
    super.initState();

    WidgetsBinding.instance.endOfFrame.then(
      (_) {
        if (mounted) _startPty();
      },
    );
  }

  void _startPty() {
    pty = Pty.start(
      shell,
      columns: terminal.viewWidth,
      rows: terminal.viewHeight,
    );

    pty.output
        .cast<List<int>>()
        .transform(Utf8Decoder())
        .listen(terminal.write);

    /// It's better for debugging the [CellOffset]
    for (var i = 1; i < 70; i++) {
      terminal.write('$i');
      final iWidth = i.toString().length;
      terminal.write(' ');
      for (var j = iWidth + 1; j < terminal.viewWidth; j++) {
        final surplus = j % 10;
        if (surplus == 0) {
          terminal.write(' ');
          continue;
        }
        terminal.write('$surplus');
      }
    }

    pty.exitCode.then((code) {
      terminal.write('the process exited with exit code $code');
    });

    terminal.onOutput = (data) {
      pty.write(const Utf8Encoder().convert(data));
    };

    terminal.onResize = (w, h, pw, ph) {
      pty.resize(h, w);
    };
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.transparent,
      body: SafeArea(
        child: _buildTerm,
      ),
    );
  }

  Widget get _buildTerm {
    return TerminalView(
      terminal,
      controller: terminalController,
      autofocus: true,
      backgroundOpacity: 0.7,
      theme: TerminalTheme(
        cursor: Color(0XAAAEAFAD),
        selectionCursor: Color.fromARGB(255, 139, 34, 81),
        selection: Color(0XAAAEAFAD),
        foreground: Color(0XFFCCCCCC),
        background: Color.fromARGB(255, 0, 0, 0),
        black: Color(0XFF000000),
        red: Color(0XFFCD3131),
        green: Color(0XFF0DBC79),
        yellow: Color(0XFFE5E510),
        blue: Color(0XFF2472C8),
        magenta: Color(0XFFBC3FBC),
        cyan: Color(0XFF11A8CD),
        white: Color(0XFFE5E5E5),
        brightBlack: Color(0XFF666666),
        brightRed: Color(0XFFF14C4C),
        brightGreen: Color(0XFF23D18B),
        brightYellow: Color(0XFFF5F543),
        brightBlue: Color(0XFF3B8EEA),
        brightMagenta: Color(0XFFD670D6),
        brightCyan: Color(0XFF29B8DB),
        brightWhite: Color(0XFFFFFFFF),
        searchHitBackground: Color(0XFFFFFF2B),
        searchHitBackgroundCurrent: Color(0XFF31FF26),
        searchHitForeground: Color(0XFF000000),
      ),
      onSecondaryTapDown: (details, offset) async {
        final selection = terminalController.selection;
        if (selection != null) {
          final text = terminal.buffer.getText(selection);
          terminalController.clearSelection();
          await Clipboard.setData(ClipboardData(text: text));
        } else {
          final data = await Clipboard.getData('text/plain');
          final text = data?.text;
          if (text != null) {
            terminal.paste(text);
          }
        }
      },
    );
  }
}

String get shell {
  if (Platform.isMacOS || Platform.isLinux) {
    return Platform.environment['SHELL'] ?? 'bash';
  }

  if (Platform.isWindows) {
    return 'cmd.exe';
  }

  return 'sh';
}