try web

lib/common.dart

@@ -2,7 +2,6 @@ import 'package:flutter/material.dart';
 import 'dart:async';
 import 'package:flutter_easyloading/flutter_easyloading.dart';
 import 'package:tuple/tuple.dart';
-import 'dart:io';
 
 typedef F = String Function(String);
 
@@ -29,13 +28,13 @@ final ButtonStyle flatButtonStyle = TextButton.styleFrom(
   ),
 );
 
-void Function() loadingCancelCallback = null;
+void Function() loadingCancelCallback;
 void showLoading(String text, BuildContext context) {
   if (_hasDialog && context != null) {
     Navigator.pop(context);
   }
   dismissLoading();
-  if (Platform.isAndroid) {
+  if (isAndroid) {
     EasyLoading.show(status: text, maskType: EasyLoadingMaskType.black);
     return;
   }
@@ -202,3 +201,7 @@ Color str2color(String str, [alpha = 0xFF]) {
   hash = hash % 16777216;
   return Color((hash & 0xFF7FFF) | (alpha << 24));
 }
+
+bool isAndroid;
+bool isIOS;
+bool isWeb;

lib/home_page.dart

@@ -5,9 +5,8 @@ import 'package:package_info/package_info.dart';
 import 'package:url_launcher/url_launcher.dart';
 import 'dart:async';
 import 'common.dart';
-import 'model.dart';
+import 'model.dart' if (dart.library.html) 'web_model.dart';
 import 'remote_page.dart';
-import 'dart:io';
 
 class HomePage extends StatefulWidget {
   HomePage({Key key, this.title}) : super(key: key);
@@ -25,7 +24,7 @@ class _HomePageState extends State<HomePage> {
   @override
   void initState() {
     super.initState();
-    if (Platform.isAndroid) {
+    if (isAndroid) {
       Timer(Duration(seconds: 5), () {
         _updateUrl = FFI.getByName('software_update_url');
         if (_updateUrl.isNotEmpty) setState(() {});

lib/main.dart

@@ -3,7 +3,7 @@ import 'package:provider/provider.dart';
 import 'package:firebase_analytics/firebase_analytics.dart';
 import 'package:firebase_analytics/observer.dart';
 import 'package:firebase_core/firebase_core.dart';
-import 'model.dart';
+import 'model.dart' if (dart.library.html) 'web_model.dart';
 import 'home_page.dart';
 
 Future<Null> main() async {

lib/model.dart

@@ -1,6 +1,5 @@
 import 'package:ffi/ffi.dart';
 import 'package:flutter/services.dart';
-import 'package:flutter/gestures.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:device_info/device_info.dart';
@@ -44,6 +43,9 @@ class FfiModel with ChangeNotifier {
   get pi => _pi;
 
   FfiModel() {
+    isIOS = Platform.isIOS;
+    isAndroid = Platform.isAndroid;
+    isWeb = false;
     Translator.call = translate;
     clear();
     () async {
@@ -295,7 +297,7 @@ class CanvasModel with ChangeNotifier {
     notifyListeners();
   }
 
-  void clear([bool notify=false]) {
+  void clear([bool notify = false]) {
     _x = 0;
     _y = 0;
     _scale = 1.0;
@@ -797,7 +799,7 @@ String translate(String name) {
   final v = tmp[name];
   if (v == null) {
     var a = 'translate';
-    var b = '{"locale": "${Platform.localeName}", "text": "${name}"}';
+    var b = '{"locale": "${Platform.localeName}", "text": "$name"}';
     return FFI.getByName(a, b);
   } else {
     return v;

lib/remote_page.dart

@@ -7,8 +7,7 @@ import 'dart:async';
 import 'package:tuple/tuple.dart';
 import 'package:wakelock/wakelock.dart';
 import 'common.dart';
-import 'model.dart';
+import 'model.dart' if (dart.library.html) 'web_model.dart';
-import 'dart:io';
 
 final initText = '\1' * 1024;
 
@@ -124,7 +123,7 @@ class _RemotePageState extends State<RemotePage> {
   void handleInput(String newValue) {
     var oldValue = _value;
     _value = newValue;
-    if (Platform.isIOS) {
+    if (isIOS) {
       var i = newValue.length - 1;
       for (; i >= 0 && newValue[i] != '\1'; --i) {}
       var j = oldValue.length - 1;

lib/web_model.dart

@@ -0,0 +1,700 @@
+import 'package:path_provider/path_provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:device_info/device_info.dart';
+import 'dart:math';
+import 'dart:convert';
+import 'dart:typed_data';
+import 'dart:ui' as ui;
+import 'package:flutter/material.dart';
+import 'package:tuple/tuple.dart';
+import 'dart:async';
+import 'common.dart';
+
+class FfiModel with ChangeNotifier {
+  PeerInfo _pi;
+  Display _display;
+  var _decoding = false;
+  bool _waitForImage;
+  bool _initialized = false;
+  final _permissions = Map<String, bool>();
+  bool _secure;
+  bool _direct;
+
+  get permissions => _permissions;
+  get initialized => _initialized;
+  get display => _display;
+  get secure => _secure;
+  get direct => _direct;
+  get pi => _pi;
+
+  FfiModel() {
+    isIOS = false;
+    isAndroid = false;
+    isWeb = true;
+    Translator.call = translate;
+    clear();
+    () async {
+      await FFI.init();
+      _initialized = true;
+      print("FFI initialized");
+      notifyListeners();
+    }();
+  }
+
+  void updatePermission(Map<String, dynamic> evt) {
+    evt.forEach((k, v) {
+      if (k == 'name') return;
+      _permissions[k] = v == 'true';
+    });
+    print('$_permissions');
+  }
+
+  bool keyboard() => _permissions['keyboard'] != false;
+
+  void clear() {
+    _pi = PeerInfo();
+    _display = Display();
+    _waitForImage = false;
+    _secure = null;
+    _direct = null;
+    clearPermissions();
+  }
+
+  void setConnectionType(bool secure, bool direct) {
+    _secure = secure;
+    _direct = direct;
+  }
+
+  Image getConnectionImage() {
+    String icon;
+    if (secure == true && direct == true) {
+      icon = 'secure';
+    } else if (secure == false && direct == true) {
+      icon = 'insecure';
+    } else if (secure == false && direct == false) {
+      icon = 'insecure_relay';
+    } else if (secure == true && direct == false) {
+      icon = 'secure_relay';
+    }
+    return icon == null
+        ? null
+        : Image.asset('assets/$icon.png', width: 48, height: 48);
+  }
+
+  void clearPermissions() {
+    _permissions.clear();
+  }
+
+  void update(
+      String id,
+      BuildContext context,
+      void Function(
+    Map<String, dynamic> evt,
+    String id,
+  )
+          handleMsgbox) {
+    var pos;
+    for (;;) {
+      var evt = FFI.popEvent();
+      if (evt == null) break;
+      var name = evt['name'];
+      if (name == 'msgbox') {
+        handleMsgbox(evt, id);
+      } else if (name == 'peer_info') {
+        handlePeerInfo(evt, context);
+      } else if (name == 'connection_ready') {
+        FFI.ffiModel.setConnectionType(
+            evt['secure'] == 'true', evt['direct'] == 'true');
+      } else if (name == 'switch_display') {
+        handleSwitchDisplay(evt);
+      } else if (name == 'cursor_data') {
+        FFI.cursorModel.updateCursorData(evt);
+      } else if (name == 'cursor_id') {
+        FFI.cursorModel.updateCursorId(evt);
+      } else if (name == 'cursor_position') {
+        pos = evt;
+      } else if (name == 'clipboard') {
+      } else if (name == 'permission') {
+        FFI.ffiModel.updatePermission(evt);
+      }
+    }
+    if (pos != null) FFI.cursorModel.updateCursorPosition(pos);
+    if (!_decoding) {
+      var rgba = FFI.getRgba();
+      if (rgba != null) {
+        if (_waitForImage) {
+          _waitForImage = false;
+          dismissLoading();
+        }
+        _decoding = true;
+        final pid = FFI.id;
+        ui.decodeImageFromPixels(
+            rgba, _display.width, _display.height, ui.PixelFormat.bgra8888,
+            (image) {
+          FFI.clearRgbaFrame();
+          _decoding = false;
+          if (FFI.id != pid) return;
+          try {
+            // my throw exception, because the listener maybe already dispose
+            FFI.imageModel.update(image);
+          } catch (e) {
+            print('update image: $e');
+          }
+        });
+      }
+    }
+  }
+
+  void handleSwitchDisplay(Map<String, dynamic> evt) {
+    var old = _pi.currentDisplay;
+    _pi.currentDisplay = int.parse(evt['display']);
+    _display.x = double.parse(evt['x']);
+    _display.y = double.parse(evt['y']);
+    _display.width = int.parse(evt['width']);
+    _display.height = int.parse(evt['height']);
+    if (old != _pi.currentDisplay)
+      FFI.cursorModel.updateDisplayOrigin(_display.x, _display.y);
+    notifyListeners();
+  }
+
+  void handlePeerInfo(Map<String, dynamic> evt, BuildContext context) {
+    dismissLoading();
+    _pi.version = evt['version'];
+    _pi.username = evt['username'];
+    _pi.hostname = evt['hostname'];
+    _pi.platform = evt['platform'];
+    _pi.sasEnabled = evt['sas_enabled'] == "true";
+    _pi.currentDisplay = int.parse(evt['current_display']);
+    List<dynamic> displays = json.decode(evt['displays']);
+    _pi.displays = [];
+    for (int i = 0; i < displays.length; ++i) {
+      Map<String, dynamic> d0 = displays[i];
+      var d = Display();
+      d.x = d0['x'].toDouble();
+      d.y = d0['y'].toDouble();
+      d.width = d0['width'];
+      d.height = d0['height'];
+      _pi.displays.add(d);
+    }
+    if (_pi.currentDisplay < _pi.displays.length) {
+      _display = _pi.displays[_pi.currentDisplay];
+      initializeCursorAndCanvas();
+    }
+    if (displays.length > 0) {
+      showLoading(translate('Connected, waiting for image...'), context);
+      _waitForImage = true;
+    }
+    notifyListeners();
+  }
+}
+
+class ImageModel with ChangeNotifier {
+  ui.Image _image;
+
+  ui.Image get image => _image;
+
+  void update(ui.Image image) {
+    if (_image == null && image != null) {
+      final size = MediaQueryData.fromWindow(ui.window).size;
+      final xscale = size.width / image.width;
+      final yscale = size.height / image.height;
+      FFI.canvasModel.scale = max(xscale, yscale);
+    }
+    _image = image;
+    if (image != null) notifyListeners();
+  }
+
+  double get maxScale {
+    if (_image == null) return 1.0;
+    final size = MediaQueryData.fromWindow(ui.window).size;
+    final xscale = size.width / _image.width;
+    final yscale = size.height / _image.height;
+    return max(1.0, max(xscale, yscale));
+  }
+
+  double get minScale {
+    if (_image == null) return 1.0;
+    final size = MediaQueryData.fromWindow(ui.window).size;
+    final xscale = size.width / _image.width;
+    final yscale = size.height / _image.height;
+    return min(xscale, yscale);
+  }
+}
+
+class CanvasModel with ChangeNotifier {
+  double _x;
+  double _y;
+  double _scale;
+
+  CanvasModel() {
+    clear();
+  }
+
+  double get x => _x;
+  double get y => _y;
+  double get scale => _scale;
+
+  void update(double x, double y, double scale) {
+    _x = x;
+    _y = y;
+    _scale = scale;
+    notifyListeners();
+  }
+
+  set scale(v) {
+    _scale = v;
+    notifyListeners();
+  }
+
+  void panX(double dx) {
+    _x += dx;
+    notifyListeners();
+  }
+
+  void resetOffset() {
+    _x = 0;
+    _y = 0;
+    notifyListeners();
+  }
+
+  void panY(double dy) {
+    _y += dy;
+    notifyListeners();
+  }
+
+  void updateScale(double v) {
+    if (FFI.imageModel.image == null) return;
+    final offset = FFI.cursorModel.offset;
+    var r = FFI.cursorModel.getVisibleRect();
+    final px0 = (offset.dx - r.left) * _scale;
+    final py0 = (offset.dy - r.top) * _scale;
+    _scale *= v;
+    final maxs = FFI.imageModel.maxScale;
+    final mins = FFI.imageModel.minScale;
+    if (_scale > maxs) _scale = maxs;
+    if (_scale < mins) _scale = mins;
+    r = FFI.cursorModel.getVisibleRect();
+    final px1 = (offset.dx - r.left) * _scale;
+    final py1 = (offset.dy - r.top) * _scale;
+    _x -= px1 - px0;
+    _y -= py1 - py0;
+    notifyListeners();
+  }
+
+  void clear([bool notify = false]) {
+    _x = 0;
+    _y = 0;
+    _scale = 1.0;
+    if (notify) notifyListeners();
+  }
+}
+
+class CursorModel with ChangeNotifier {
+  ui.Image _image;
+  final _images = Map<int, Tuple3<ui.Image, double, double>>();
+  double _x = -10000;
+  double _y = -10000;
+  double _hotx = 0;
+  double _hoty = 0;
+  double _displayOriginX = 0;
+  double _displayOriginY = 0;
+
+  ui.Image get image => _image;
+  double get x => _x - _displayOriginX;
+  double get y => _y - _displayOriginY;
+  Offset get offset => Offset(_x, _y);
+  double get hotx => _hotx;
+  double get hoty => _hoty;
+
+  // remote physical display coordinate
+  Rect getVisibleRect() {
+    final size = MediaQueryData.fromWindow(ui.window).size;
+    final xoffset = FFI.canvasModel.x;
+    final yoffset = FFI.canvasModel.y;
+    final scale = FFI.canvasModel.scale;
+    final x0 = _displayOriginX - xoffset / scale;
+    final y0 = _displayOriginY - yoffset / scale;
+    return Rect.fromLTWH(x0, y0, size.width / scale, size.height / scale);
+  }
+
+  double adjustForKeyboard() {
+    final m = MediaQueryData.fromWindow(ui.window);
+    var keyboardHeight = m.viewInsets.bottom;
+    final size = m.size;
+    if (keyboardHeight < 100) return 0;
+    final s = FFI.canvasModel.scale;
+    final thresh = (size.height - keyboardHeight) / 2;
+    var h = (_y - getVisibleRect().top) * s; // local physical display height
+    return h - thresh;
+  }
+
+  void touch(double x, double y, bool right) {
+    final scale = FFI.canvasModel.scale;
+    final xoffset = FFI.canvasModel.x;
+    final yoffset = FFI.canvasModel.y;
+    _x = (x - xoffset) / scale + _displayOriginX;
+    _y = (y - yoffset) / scale + _displayOriginY;
+    FFI.moveMouse(_x, _y);
+    FFI.tap(right);
+    notifyListeners();
+  }
+
+  void reset() {
+    _x = _displayOriginX;
+    _y = _displayOriginY;
+    FFI.moveMouse(_x, _y);
+    FFI.canvasModel.clear(true);
+    notifyListeners();
+  }
+
+  void updatePan(double dx, double dy, bool touchMode, bool drag) {
+    if (FFI.imageModel.image == null) return;
+    if (touchMode) {
+      if (drag) {
+        final scale = FFI.canvasModel.scale;
+        _x += dx / scale;
+        _y += dy / scale;
+        FFI.moveMouse(_x, _y);
+        notifyListeners();
+      } else {
+        FFI.canvasModel.panX(dx);
+        FFI.canvasModel.panY(dy);
+      }
+      return;
+    }
+    final scale = FFI.canvasModel.scale;
+    dx /= scale;
+    dy /= scale;
+    final r = getVisibleRect();
+    var cx = r.center.dx;
+    var cy = r.center.dy;
+    var tryMoveCanvasX = false;
+    if (dx > 0) {
+      final maxCanvasCanMove =
+          _displayOriginX + FFI.imageModel.image.width - r.right;
+      tryMoveCanvasX = _x + dx > cx && maxCanvasCanMove > 0;
+      if (tryMoveCanvasX) {
+        dx = min(dx, maxCanvasCanMove);
+      } else {
+        final maxCursorCanMove = r.right - _x;
+        dx = min(dx, maxCursorCanMove);
+      }
+    } else if (dx < 0) {
+      final maxCanvasCanMove = _displayOriginX - r.left;
+      tryMoveCanvasX = _x + dx < cx && maxCanvasCanMove < 0;
+      if (tryMoveCanvasX) {
+        dx = max(dx, maxCanvasCanMove);
+      } else {
+        final maxCursorCanMove = r.left - _x;
+        dx = max(dx, maxCursorCanMove);
+      }
+    }
+    var tryMoveCanvasY = false;
+    if (dy > 0) {
+      final mayCanvasCanMove =
+          _displayOriginY + FFI.imageModel.image.height - r.bottom;
+      tryMoveCanvasY = _y + dy > cy && mayCanvasCanMove > 0;
+      if (tryMoveCanvasY) {
+        dy = min(dy, mayCanvasCanMove);
+      } else {
+        final mayCursorCanMove = r.bottom - _y;
+        dy = min(dy, mayCursorCanMove);
+      }
+    } else if (dy < 0) {
+      final mayCanvasCanMove = _displayOriginY - r.top;
+      tryMoveCanvasY = _y + dy < cy && mayCanvasCanMove < 0;
+      if (tryMoveCanvasY) {
+        dy = max(dy, mayCanvasCanMove);
+      } else {
+        final mayCursorCanMove = r.top - _y;
+        dy = max(dy, mayCursorCanMove);
+      }
+    }
+
+    if (dx == 0 && dy == 0) return;
+    _x += dx;
+    _y += dy;
+    if (tryMoveCanvasX && dx != 0) {
+      FFI.canvasModel.panX(-dx);
+    }
+    if (tryMoveCanvasY && dy != 0) {
+      FFI.canvasModel.panY(-dy);
+    }
+
+    FFI.moveMouse(_x, _y);
+    notifyListeners();
+  }
+
+  void updateCursorData(Map<String, dynamic> evt) {
+    var id = int.parse(evt['id']);
+    _hotx = double.parse(evt['hotx']);
+    _hoty = double.parse(evt['hoty']);
+    var width = int.parse(evt['width']);
+    var height = int.parse(evt['height']);
+    List<dynamic> colors = json.decode(evt['colors']);
+    final rgba = Uint8List.fromList(colors.map((s) => s as int).toList());
+    var pid = FFI.id;
+    ui.decodeImageFromPixels(rgba, width, height, ui.PixelFormat.rgba8888,
+        (image) {
+      if (FFI.id != pid) return;
+      _image = image;
+      _images[id] = Tuple3(image, _hotx, _hoty);
+      try {
+        // my throw exception, because the listener maybe already dispose
+        notifyListeners();
+      } catch (e) {
+        print('notify cursor: $e');
+      }
+    });
+  }
+
+  void updateCursorId(Map<String, dynamic> evt) {
+    final tmp = _images[int.parse(evt['id'])];
+    if (tmp != null) {
+      _image = tmp.item1;
+      _hotx = tmp.item2;
+      _hoty = tmp.item3;
+      notifyListeners();
+    }
+  }
+
+  void updateCursorPosition(Map<String, dynamic> evt) {
+    _x = double.parse(evt['x']);
+    _y = double.parse(evt['y']);
+    notifyListeners();
+  }
+
+  void updateDisplayOrigin(double x, double y) {
+    _displayOriginX = x;
+    _displayOriginY = y;
+    _x = x + 1;
+    _y = y + 1;
+    FFI.moveMouse(x, y);
+    FFI.canvasModel.resetOffset();
+    notifyListeners();
+  }
+
+  void updateDisplayOriginWithCursor(
+      double x, double y, double xCursor, double yCursor) {
+    _displayOriginX = x;
+    _displayOriginY = y;
+    _x = xCursor;
+    _y = yCursor;
+    FFI.moveMouse(x, y);
+    notifyListeners();
+  }
+
+  void clear() {
+    _x = -10000;
+    _x = -10000;
+    _image = null;
+    _images.clear();
+  }
+}
+
+class FFI {
+  static String id = "";
+  static String _dir = '';
+  static var shift = false;
+  static var ctrl = false;
+  static var alt = false;
+  static var command = false;
+  static final imageModel = ImageModel();
+  static final ffiModel = FfiModel();
+  static final cursorModel = CursorModel();
+  static final canvasModel = CanvasModel();
+
+  static String getId() {
+    return getByName('remote_id');
+  }
+
+  static void tap(bool right) {
+    sendMouse('down', right ? 'right' : 'left');
+    sendMouse('up', right ? 'right' : 'left');
+  }
+
+  static void scroll(double y) {
+    var y2 = y.round();
+    if (y2 == 0) return;
+    setByName('send_mouse',
+        json.encode(modify({'type': 'wheel', 'y': y2.toString()})));
+  }
+
+  static void reconnect() {
+    setByName('reconnect');
+    FFI.ffiModel.clearPermissions();
+  }
+
+  static void resetModifiers() {
+    shift = ctrl = alt = command = false;
+  }
+
+  static Map<String, String> modify(Map<String, String> evt) {
+    if (ctrl) evt['ctrl'] = 'true';
+    if (shift) evt['shift'] = 'true';
+    if (alt) evt['alt'] = 'true';
+    if (command) evt['command'] = 'true';
+    return evt;
+  }
+
+  static void sendMouse(String type, String buttons) {
+    if (!ffiModel.keyboard()) return;
+    setByName(
+        'send_mouse', json.encode(modify({'type': type, 'buttons': buttons})));
+  }
+
+  static void inputKey(String name) {
+    if (!ffiModel.keyboard()) return;
+    setByName('input_key', json.encode(modify({'name': name})));
+  }
+
+  static void moveMouse(double x, double y) {
+    if (!ffiModel.keyboard()) return;
+    var x2 = x.toInt();
+    var y2 = y.toInt();
+    setByName('send_mouse', json.encode(modify({'x': '$x2', 'y': '$y2'})));
+  }
+
+  static List<Peer> peers() {
+    try {
+      List<dynamic> peers = json.decode(getByName('peers'));
+      return peers
+          .map((s) => s as List<dynamic>)
+          .map((s) =>
+              Peer.fromJson(s[0] as String, s[1] as Map<String, dynamic>))
+          .toList();
+    } catch (e) {
+      print('peers(): $e');
+    }
+    return [];
+  }
+
+  static void connect(String id) {
+    setByName('connect', id);
+    FFI.id = id;
+  }
+
+  static void clearRgbaFrame() {}
+
+  static Uint8List getRgba() {}
+
+  static Map<String, dynamic> popEvent() {
+    var s = getByName('event');
+    if (s == '') return null;
+    try {
+      Map<String, dynamic> event = json.decode(s);
+      return event;
+    } catch (e) {
+      print('popEvent(): $e');
+    }
+    return null;
+  }
+
+  static void login(String password, bool remember) {
+    setByName(
+        'login',
+        json.encode({
+          'password': password,
+          'remember': remember ? 'true' : 'false',
+        }));
+  }
+
+  static void close() {
+    savePreference(id, cursorModel.x, cursorModel.y, canvasModel.x,
+        canvasModel.y, canvasModel.scale, ffiModel.pi.currentDisplay);
+    id = "";
+    setByName('close', '');
+    imageModel.update(null);
+    cursorModel.clear();
+    ffiModel.clear();
+    canvasModel.clear();
+    resetModifiers();
+  }
+
+  static void setByName(String name, [String value = '']) {}
+
+  static String getByName(String name, [String arg = '']) {}
+
+  static Future<Null> init() async {}
+}
+
+class Peer {
+  final String id;
+  final String username;
+  final String hostname;
+  final String platform;
+
+  Peer.fromJson(String id, Map<String, dynamic> json)
+      : id = id,
+        username = json['username'],
+        hostname = json['hostname'],
+        platform = json['platform'];
+}
+
+class Display {
+  double x = 0;
+  double y = 0;
+  int width = 0;
+  int height = 0;
+}
+
+class PeerInfo {
+  String version;
+  String username;
+  String hostname;
+  String platform;
+  bool sasEnabled;
+  int currentDisplay;
+  List<Display> displays;
+}
+
+void savePreference(String id, double xCursor, double yCursor, double xCanvas,
+    double yCanvas, double scale, int currentDisplay) async {
+  SharedPreferences prefs = await SharedPreferences.getInstance();
+  final p = Map<String, dynamic>();
+  p['xCursor'] = xCursor;
+  p['yCursor'] = yCursor;
+  p['xCanvas'] = xCanvas;
+  p['yCanvas'] = yCanvas;
+  p['scale'] = scale;
+  p['currentDisplay'] = currentDisplay;
+  prefs.setString('peer' + id, json.encode(p));
+}
+
+Future<Map<String, dynamic>> getPreference(String id) async {
+  SharedPreferences prefs = await SharedPreferences.getInstance();
+  var p = prefs.getString('peer' + id);
+  if (p == null) return null;
+  Map<String, dynamic> m = json.decode(p);
+  return m;
+}
+
+void removePreference(String id) async {
+  SharedPreferences prefs = await SharedPreferences.getInstance();
+  prefs.remove('peer' + id);
+}
+
+void initializeCursorAndCanvas() async {
+  var p = await getPreference(FFI.id);
+  int currentDisplay = 0;
+  if (p != null) {
+    currentDisplay = p['currentDisplay'];
+  }
+  if (p == null || currentDisplay != FFI.ffiModel.pi.currentDisplay) {
+    FFI.cursorModel
+        .updateDisplayOrigin(FFI.ffiModel.display.x, FFI.ffiModel.display.y);
+    return;
+  }
+  double xCursor = p['xCursor'];
+  double yCursor = p['yCursor'];
+  double xCanvas = p['xCanvas'];
+  double yCanvas = p['yCanvas'];
+  double scale = p['scale'];
+  FFI.cursorModel.updateDisplayOriginWithCursor(
+      FFI.ffiModel.display.x, FFI.ffiModel.display.y, xCursor, yCursor);
+  FFI.canvasModel.update(xCanvas, yCanvas, scale);
+}
+
+String translate(String name) {
+  return name;
+}

pubspec.lock

@@ -21,7 +21,7 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.6.1"
+    version: "2.8.2"
   boolean_selector:
     dependency: transitive
     description:
@@ -35,14 +35,14 @@ packages:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.1"
   clock:
     dependency: transitive
     description:
@@ -227,14 +227,14 @@ packages:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.10"
+    version: "0.12.11"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0"
+    version: "1.7.0"
   nested:
     dependency: transitive
     description:
@@ -428,7 +428,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.0"
+    version: "0.4.3"
   tuple:
     dependency: "direct main"
     description:
@@ -491,7 +491,7 @@ packages:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   wakelock:
     dependency: "direct main"
     description:
@@ -556,5 +556,5 @@ packages:
     source: hosted
     version: "3.1.0"
 sdks:
-  dart: ">=2.13.0 <3.0.0"
+  dart: ">=2.14.0 <3.0.0"
   flutter: ">=2.0.0"

web/index.html

@@ -0,0 +1,125 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <!--
+    If you are serving your web app in a path other than the root, change the
+    href value below to reflect the base path you are serving from.
+
+    The path provided below has to start and end with a slash "/" in order for
+    it to work correctly.
+
+    For more details:
+    * https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base
+
+    This is a placeholder for base href that will be replaced by the value of
+    the `--base-href` argument provided to `flutter build`.
+  -->
+  <base href="$FLUTTER_BASE_HREF">
+
+  <meta charset="UTF-8">
+  <meta content="IE=Edge" http-equiv="X-UA-Compatible">
+  <meta name="description" content="Remote Desktop.">
+
+  <!-- iOS meta tags & icons -->
+  <meta name="apple-mobile-web-app-capable" content="yes">
+  <meta name="apple-mobile-web-app-status-bar-style" content="black">
+  <meta name="apple-mobile-web-app-title" content="RustDesk">
+  <link rel="apple-touch-icon" href="icons/Icon-192.png">
+
+  <!-- Favicon -->
+  <link rel="icon" type="image/png" href="favicon.png"/>
+
+  <title>RustDesk</title>
+  <link rel="manifest" href="manifest.json">
+</head>
+<body>
+  <!-- This script installs service_worker.js to provide PWA functionality to
+       application. For more information, see:
+       https://developers.google.com/web/fundamentals/primers/service-workers -->
+  <script>
+    var serviceWorkerVersion = null;
+    var scriptLoaded = false;
+    function loadMainDartJs() {
+      if (scriptLoaded) {
+        return;
+      }
+      scriptLoaded = true;
+      var scriptTag = document.createElement('script');
+      scriptTag.src = 'main.dart.js';
+      scriptTag.type = 'application/javascript';
+      document.body.append(scriptTag);
+    }
+
+    if ('serviceWorker' in navigator) {
+      // Service workers are supported. Use them.
+      window.addEventListener('load', function () {
+        // Wait for registration to finish before dropping the <script> tag.
+        // Otherwise, the browser will load the script multiple times,
+        // potentially different versions.
+        var serviceWorkerUrl = 'flutter_service_worker.js?v=' + serviceWorkerVersion;
+        navigator.serviceWorker.register(serviceWorkerUrl)
+          .then((reg) => {
+            function waitForActivation(serviceWorker) {
+              serviceWorker.addEventListener('statechange', () => {
+                if (serviceWorker.state == 'activated') {
+                  console.log('Installed new service worker.');
+                  loadMainDartJs();
+                }
+              });
+            }
+            if (!reg.active && (reg.installing || reg.waiting)) {
+              // No active web worker and we have installed or are installing
+              // one for the first time. Simply wait for it to activate.
+              waitForActivation(reg.installing || reg.waiting);
+            } else if (!reg.active.scriptURL.endsWith(serviceWorkerVersion)) {
+              // When the app updates the serviceWorkerVersion changes, so we
+              // need to ask the service worker to update.
+              console.log('New service worker available.');
+              reg.update();
+              waitForActivation(reg.installing);
+            } else {
+              // Existing service worker is still good.
+              console.log('Loading app from service worker.');
+              loadMainDartJs();
+            }
+          });
+
+        // If service worker doesn't succeed in a reasonable amount of time,
+        // fallback to plaint <script> tag.
+        setTimeout(() => {
+          if (!scriptLoaded) {
+            console.warn(
+              'Failed to load app from service worker. Falling back to plain <script> tag.',
+            );
+            loadMainDartJs();
+          }
+        }, 4000);
+      });
+    } else {
+      // Service workers not supported. Just drop the <script> tag.
+      loadMainDartJs();
+    }
+  </script>
+  <script src="https://www.gstatic.com/firebasejs/8.6.1/firebase-app.js"></script>
+  <script src="https://www.gstatic.com/firebasejs/8.6.1/firebase-analytics.js"></script>
+
+<script>
+  // Your web app's Firebase configuration
+  // For Firebase JS SDK v7.20.0 and later, measurementId is optional
+  const firebaseConfig = {
+    apiKey: "AIzaSyCgehIZk1aFP0E7wZtYRRqrfvNiNAF39-A",
+    authDomain: "rustdesk.firebaseapp.com",
+    databaseURL: "https://rustdesk.firebaseio.com",
+    projectId: "rustdesk",
+    storageBucket: "rustdesk.appspot.com",
+    messagingSenderId: "768133699366",
+    appId: "1:768133699366:web:d50faf0792cb208d7993e7",
+    measurementId: "G-9PEH85N6ZQ"
+  };
+
+  // Initialize Firebase
+  firebase.initializeApp(firebaseConfig);
+  firebase.analytics();
+</script>
+</body>
+</html>

web/manifest.json

@@ -0,0 +1,35 @@
+{
+    "name": "rustdesk",
+    "short_name": "rustdesk",
+    "start_url": ".",
+    "display": "standalone",
+    "background_color": "#0175C2",
+    "theme_color": "#0175C2",
+    "description": "Remote Desktop.",
+    "orientation": "portrait-primary",
+    "prefer_related_applications": false,
+    "icons": [
+        {
+            "src": "icons/Icon-192.png",
+            "sizes": "192x192",
+            "type": "image/png"
+        },
+        {
+            "src": "icons/Icon-512.png",
+            "sizes": "512x512",
+            "type": "image/png"
+        },
+        {
+            "src": "icons/Icon-maskable-192.png",
+            "sizes": "192x192",
+            "type": "image/png",
+            "purpose": "maskable"
+        },
+        {
+            "src": "icons/Icon-maskable-512.png",
+            "sizes": "512x512",
+            "type": "image/png",
+            "purpose": "maskable"
+        }
+    ]
+}