flutter3-macos：基于flutter3.19+window_manager实战桌面OS应用

最新原创研发基于flutter3.19+getx+window_manager仿macOS桌面系统实例。

flutter3_macui使用最新跨端技术flutter3.19.2+dart3.3开发的桌面版OS平台。

整体采用模糊虚化背景，支持macos和windows11两种风格dock菜单。

技术栈

• 编辑器：Vscode
• 框架技术：flutter3.19.2+dart3.3
• 窗口管理器：window_manager^0.3.8
• 路由/状态管理：get^4.6.6
• 缓存服务：get_storage^2.1.1
• 拖拽排序：reorderables^0.6.0
• 图表组件：fl_chart^0.67.0
• 系统托盘：system_tray^2.0.3

功能特性

1. 桌面菜单支持自适应排列，一级/二级弹窗菜单
2. 整体采用高斯毛玻璃虚化效果
3. 经典程序坞Dock动效菜单
4. Dock菜单可拖拽式排序、支持二级弹窗式菜单
5. 丰富视觉效果，自定义桌面主题换肤背景
6. 可视化多窗口路由，支持弹窗方式打开新路由页面

项目结构

入口配置

import 'dart:io';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:get_storage/get_storage.dart';
import 'package:intl/date_symbol_data_local.dart';
import 'package:system_tray/system_tray.dart';
import 'package:window_manager/window_manager.dart';

import 'utils/index.dart';

// 引入布局模板
import 'layouts/index.dart';

// 引入路由管理
import 'router/index.dart';

void main() async {
  // 初始化国际化语言
  initializeDateFormatting();

  // 初始化get_storage本地存储
  await GetStorage.init();

  // 初始化window_manager窗口
  WidgetsFlutterBinding.ensureInitialized();
  await windowManager.ensureInitialized();
  WindowOptions windowOptions = const WindowOptions(
    title: 'Flutter-MacOS',
    size: Size(1000, 640),
    center: true,
    backgroundColor: Colors.transparent,
    skipTaskbar: false,
    titleBarStyle: TitleBarStyle.hidden, // 是否隐藏系统导航栏
    windowButtonVisibility: false,
  );
  windowManager.waitUntilReadyToShow(windowOptions, () async {
    windowManager.setAsFrameless(); // 无边框
    windowManager.setHasShadow(true); // 是否有阴影
    // windowManager.setResizable(false); // 是否可缩放
    // windowManager.setAlwaysOnTop(false); // 是否置顶窗口
    await windowManager.show();
    await windowManager.focus();
  });

  await initSystemTray();

  runApp(const MyApp());
}

使用system_tray插件配置桌面端系统托盘图标。

// 初始化系统托盘图标
Future<void> initSystemTray() async {
  String trayIco = 'assets/images/tray.ico';
  SystemTray systemTray = SystemTray();

  // 初始化系统托盘
  await systemTray.initSystemTray(
    title: 'Flutter-MacOS',
    iconPath: trayIco,
  );

  // 右键菜单
  final Menu menu = Menu();
  await menu.buildFrom([
    MenuItemLabel(label: '打开主界面', image: 'assets/images/tray_main.bmp', onClicked: (menuItem) async => await windowManager.show()),
    MenuItemLabel(label: '隐藏窗口', image: 'assets/images/tray_hide.bmp', onClicked: (menuItem) async => await windowManager.hide()),
    MenuItemLabel(label: '设置中心', image: 'assets/images/tray_setting.bmp', onClicked: (menuItem) => {}),
    MenuItemLabel(label: '锁屏', image: 'assets/images/tray_lock.bmp', onClicked: (menuItem) => {}),
    MenuItemLabel(label: '关闭程序并退出', image: 'assets/images/tray_logout.bmp', onClicked: (menuItem) async => await windowManager.destroy()),
  ]);
  await systemTray.setContextMenu(menu);

  // 右键事件
  systemTray.registerSystemTrayEventHandler((eventName) async {
    debugPrint('eventName: $eventName');
    if (eventName == kSystemTrayEventClick) {
      Platform.isWindows ? await windowManager.show() : systemTray.popUpContextMenu();
    } else if (eventName == kSystemTrayEventRightClick) {
      Platform.isWindows ? systemTray.popUpContextMenu() : await windowManager.show();
    }
  });
}

flutter自定义窗口管理window_manager

flutter_macos项目为了整体风格一致，顶部导航栏菜单自定义组件实现功能，去掉了系统原生顶部导航条，使用window_manager插件来进行窗口管理。

目前bitsdojo_window和window_manager这两款桌面窗口管理插件使用的比较多，其中前者功能简单一些，后者则提供了更为丰富的功能。

官方有下面几个组件是文档没有列出的：

• DragToMoveArea 拖拽窗口
• DragToResizeArea 缩放窗口
• VirtualWindowFrame（仅Linux）
• WindowCaption 自定义顶部导航栏
• WindowCaptionButtonIcon 导航栏右上角按钮组

return Container(
  height: widget.titlebarHeight,
  decoration: BoxDecoration(
    backgroundBlendMode: widget.backgroundBlendMode,
    color: widget.backgroundColor,
    gradient: widget.gradient,
  ),
  child: Stack(
    children: [
      Row(
        children: [
          // 头部
          Container(
            child: widget.leading,
          ),
          // 可拖动区(标题)
          Expanded(
            child: DragToMoveArea(
              child: SizedBox(
                height: double.infinity,
                child: Row(
                  children: [
                    // 标题(不居中)
                    customTitle(!widget.centerTitle),
                  ],
                ),
              ),
            ),
          ),
          // 尾部
          Container(
            child: widget.trailing,
          ),
          // 按钮组
          WinBtns(theme: widget.actionButtonTheme, buttonSize: widget.actionButtonSize),
        ],
      ),
      // 标题(居中)
      customTitle(widget.centerTitle),
    ],
  ),
);

导航条支持自定义标题(居中)、背景色、头部、尾部、导航条高度等功能。

// 标题
final Widget? title;
// 背景色
final Color? backgroundColor;
// 前景色
final Color? foregroundColor;
// 混合模式
final BlendMode? backgroundBlendMode;
// 渐变背景
final LinearGradient? gradient;
// 标题是否居中
final bool centerTitle;
// 头部
final Widget? leading;
// 尾部
final Widget? trailing;
// 标题栏高度
final double titlebarHeight;
// 右上角按钮组主题色(light/dark)
final String? actionButtonTheme;
// 右上角按钮组宽高
final Size actionButtonSize;

flutter-os布局模板

如上图：分为顶部导航栏+桌面菜单+底部Dock栏。

/*
 * flutter桌面os布局  Q：282310962
*/

return Scaffold(
  key: scaffoldKey,
  body: Container(
    // 背景图主题
    decoration: skinTheme(),
    // DragToResizeArea自定义缩放窗口
    child: DragToResizeArea(
      child: Flex(
        direction: Axis.vertical,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          // 导航栏
          WindowTitlebar(
            onDrawer: () {
              // 自定义打开右侧drawer
              scaffoldKey.currentState?.openEndDrawer();
            },
          ),

          // 桌面区域
          Expanded(
            child: GestureDetector(
              child: Container(
                color: Colors.transparent,
                child: Row(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Expanded(
                      child: GestureDetector(
                        child: const WindowDesktop(),
                        onSecondaryTapDown: (TapDownDetails details) {
                          posDX = details.globalPosition.dx;
                          posDY = details.globalPosition.dy;
                        },
                        onSecondaryTap: () {
                          debugPrint('桌面图标右键');
                          showDeskIconContextmenu();
                        },
                      ),
                    ),
                  ],
                ),
              ),
              onSecondaryTapDown: (TapDownDetails details) {
                posDX = details.globalPosition.dx;
                posDY = details.globalPosition.dy;
              },
              onSecondaryTap: () {
                debugPrint('桌面右键');
                showDeskContextmenu();
              },
            ),
          ),

          // Dock菜单
          settingController.settingData['dock'] == 'windows' ?
          const WindowTabbar()
          :
          const WindowDock()
          ,
        ],
      ),
    ),
  ),
  endDrawer: Drawer(
    shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(0.0)),
    width: 300,
    child: const Settings(),
  ),
);

flutter实现Dock菜单

原创自研flutter实现类似macOS程序坞Dock菜单。鼠标滑过图标带动画效果放大图标。

MouseRegion(
  cursor: SystemMouseCursors.click,
  onEnter: (event) {
    setState(() {
      hoveredIndex = index;
    });
    controller.forward(from: 0.0);
  },
  onExit: (event) {
    setState(() {
      hoveredIndex = -1;
    });
    controller.stop();
  },
  child: GestureDetector(
    onTapDown: (TapDownDetails details) {
      anchorDx = details.globalPosition.dx;
    },
    onTap: () {
      if(item!['children'] != null) {
        showDockDialog(item!['children']);
      }
    },
    // 缩放动画
    child: ScaleTransition(
      alignment: Alignment.bottomCenter,
      scale: hoveredIndex == index ? 
      controller.drive(Tween(begin: 1.0, end: 1.5).chain(CurveTween(curve: Curves.easeOutCubic)))
      :
      Tween(begin: 1.0, end: 1.0).animate(controller)
      ,
      child: UnconstrainedBox(
        child: Stack(
          alignment: AlignmentDirectional.topCenter,
          children: [
            // tooltip提示
            Visibility(
              visible: hoveredIndex == index && !draggable,
              child: Positioned(
                top: 0,
                child: SizedOverflowBox(
                  size: Size.zero,
                  child: Container(
                    alignment: Alignment.center,
                    padding: const EdgeInsets.symmetric(horizontal: 8.0, vertical: 1.0),
                    margin: const EdgeInsets.only(bottom: 20.0),
                    decoration: BoxDecoration(
                      color: Colors.black54,
                      borderRadius: BorderRadius.circular(3.0),
                    ),
                    child: Text('${item!['tooltip']}', style: const TextStyle(color: Colors.white, fontSize: 8.0, fontFamily: 'arial')),
                  ),
                ),
              ),
            ),
            // 图片/图标
            item!['children'] != null ?
            thumbDock(item!['children'])
            :
            SizedBox(
              height: 35.0,
              width: 35.0,
              child: item!['type'] != null && item!['type'] == 'icon' ? 
              IconTheme(
                data: const IconThemeData(color: Colors.white, size: 32.0),
                child: item!['imgico'],
              )
              :
              Image.asset('${item!['imgico']}')
              ,
            ),
            // 圆点
            Visibility(
              visible: item!['active'] != null,
              child: Positioned(
                bottom: 0,
                child: SizedOverflowBox(
                  size: Size.zero,
                  child: Container(
                    margin: const EdgeInsets.only(top: 2.0),
                    height: 4.0,
                    width: 4.0,
                    decoration: BoxDecoration(
                      color: Colors.black87,
                      borderRadius: BorderRadius.circular(10.0),
                    ),
                  ),
                ),
              ),
            ),
          ],
        ),
      ),
    ),
  ),
)

菜单项采用json配置，支持二级菜单功能。

List dockList = [
  {'tooltip': 'Flutter3.19', 'imgico': 'assets/images/logo.png'},
  {'tooltip': 'Safari', 'imgico': 'assets/images/mac/safari.png', 'active': true},
  {
    'tooltip': 'Launchpad',
    'imgico': 'assets/images/mac/launchpad.png',
    'children': [
      {'tooltip': 'Podcasts', 'imgico': 'assets/images/mac/podcasts.png'},
      {'tooltip': 'Quicktime', 'imgico': 'assets/images/mac/quicktime.png'},
      {'tooltip': 'Notes', 'imgico': 'assets/images/mac/notes.png'},
      {'tooltip': 'Reminder', 'imgico': 'assets/images/mac/reminders.png'},
      {'tooltip': 'Calc', 'imgico': 'assets/images/mac/calculator.png'},
    ]
  },
  {'tooltip': 'Appstore', 'imgico': 'assets/images/mac/appstore.png',},
  {'tooltip': 'Messages', 'imgico': 'assets/images/mac/messages.png', 'active': true},

  {'type': 'divider'},
  
  ...
  
  {'tooltip': 'Recycle Bin', 'imgico': 'assets/images/mac/bin.png'},
];

flutter3桌面菜单

桌面菜单使用Wrap自适应垂直排列。支持二级弹窗菜单。

@override
Widget build(BuildContext context) {
  return Container(
    padding: const EdgeInsets.all(10.0),
    child: Wrap(
      direction: Axis.vertical,
      spacing: 5.0,
      runSpacing: 5.0,
      children: List.generate(deskList.length, (index) {
        final item = deskList[index];
        return MouseRegion(
          cursor: SystemMouseCursors.click,
          onEnter: (event) {
            setState(() {
              hoveredIndex = index;
            });
          },
          onExit: (event) {
            setState(() {
              hoveredIndex = -1;
            });
          },
          child: GestureDetector(
            onTapDown: (TapDownDetails details) {
              anchorDx = details.globalPosition.dx;
              anchorDy = details.globalPosition.dy;
            },
            onTap: () {
              if(item!['children'] != null) {
                showDeskDialog(item!['children']);
              }else {
                showRouteDialog(item);
              }
            },
            child: Container(
              ...
            ),
          ),
        );
      }),
    ),
  );
}

菜单json配置其实和dock菜单配置差不多。其中component参数用于弹窗打开页面，dialog用于配置弹窗参数。

List deskList = [
  {'title': 'Flutter3.19', 'imgico': 'assets/images/logo.png', 'link': 'https://flutter.dev/'},
  {
    'title': '首页', 'imgico': const Icon(Icons.home_outlined), 'type': 'icon',
    'component': const Home(),
    'dialog': {
      'fullscreen': true
    }
  },
  {
    'title': '工作台', 'imgico': const Icon(Icons.poll_outlined), 'type': 'icon',
    'component': const Dashboard(),
  },
  {
    'title': '组件',
    'imgico': const Icon(Icons.apps),
    'type': 'icon',
    'children': [
      {'title': 'Mail', 'imgico': 'assets/images/mac/mail.png'},
      {'title': 'Info', 'imgico': 'assets/images/mac/info.png'},
      {'title': 'Editor', 'imgico': 'assets/images/mac/scripteditor.png'},
      {'title': '下载', 'imgico': const Icon(Icons.download_outlined), 'type': 'icon'},
      {'title': 'Bug统计', 'imgico': const Icon(Icons.bug_report_outlined), 'type': 'icon'},
      {'title': '计算器', 'imgico': const Icon(Icons.calculate), 'type': 'icon'},
      {'title': '图表', 'imgico': const Icon(Icons.bar_chart), 'type': 'icon'},
      {'title': '打印', 'imgico': const Icon(Icons.print), 'type': 'icon'},
      {'title': '站内信', 'imgico': const Icon(Icons.campaign), 'type': 'icon'},
      {'title': '云存储', 'imgico': const Icon(Icons.cloud_outlined), 'type': 'icon'},
      {'title': '裁剪', 'imgico': const Icon(Icons.crop_outlined), 'type': 'icon'},
    ]
  },
  {
    'title': '私密空间', 'imgico': const Icon(Icons.camera_outlined), 'type': 'icon',
    'component': const Uzone(),
  },
  
  ...
  
  {
    'title': '公众号', 'imgico': const Icon(Icons.qr_code), 'type': 'icon',
    'dialog': {
      'title': const Text('QRcode', style: TextStyle(color: Colors.white60, fontSize: 14.0, fontFamily: 'arial')),
      'content': Padding(
        padding: const EdgeInsets.all(10.0),
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Image.asset('assets/images/qrcode_white.png', height: 120.0, fit: BoxFit.contain,),
            const Spacer(),
            const Text('扫一扫，关注公众号', style: TextStyle(color: Colors.white60, fontSize: 12.0,),),
          ],
        ),
      ),
      'backgroundColor': const Color(0xff07c160),
      'actionColor': Colors.white54,
      'width': 300,
      'height': 220,
      'maximizable': false,
      'closable': true,
      'draggable': true,
    }
  },
];

当配置了component参数，点击菜单项，会以弹窗方式打开新页面。

void showRouteDialog(item) async {
  // 链接
  if(item!['link'] != null) {
    await launchUrl(Uri.parse(item!['link']));
    return;
  }
  // 图标
  Widget dialogIcon() {
    if(item!['type'] != null && item!['type'] == 'icon') {
      return IconTheme(
        data: const IconThemeData(size: 16.0),
        child: item!['imgico'],
      );
    }else {
      return Image.asset('${item!['imgico']}', height: 16.0, width: 16.0, fit: BoxFit.cover);
    }
  }

  // Fdialog参数
  dynamic dialog = item!['dialog'] ?? {};

  navigator?.push(FdialogRoute(
    child: Fdialog(
      // 标题
      title: dialog!['title'] ?? Row(
        children: [
          dialogIcon(),
          const SizedBox(width: 5.0,),
          Text('${item!['title']}',),
        ],
      ),
      // 内容
      content: dialog!['content'] ?? ListView(
        padding: const EdgeInsets.all(10.0),
        children: [
          item!['component'] ?? const Center(child: Column(children: [Icon(Icons.layers,), Text('Empty~'),],)),
        ],
      ),
      titlePadding: dialog!['titlePadding'], // 标题内间距
      backgroundColor: dialog!['backgroundColor'] ?? Colors.white.withOpacity(.85), // 弹窗背景色
      barrierColor: dialog!['barrierColor'], // 弹窗遮罩层颜色
      offset: dialog!['offset'], // 弹窗位置(坐标点)
      width: dialog!['width'] ?? 800, // 宽度
      height: dialog!['height'] ?? 500, // 高度
      radius: dialog!['radius'], // 圆角
      fullscreen: dialog!['fullscreen'] ?? false, // 是否全屏
      maximizable: dialog!['maximizable'] ?? true, // 是否显示最大化按钮
      closable: dialog!['closable'] ?? true, // 是否显示关闭按钮
      customClose: dialog!['customClose'], // 自定义关闭按钮
      closeIcon: dialog!['closeIcon'], // 自定义关闭图标
      actionColor: dialog!['actionColor'], // 右上角按钮组颜色
      actionSize: dialog!['actionSize'], // 右上角按钮组大小
      draggable: dialog!['draggable'] ?? true, // 是否可拖拽
      destroyOnExit: dialog!['destroyOnExit'] ?? false, // 鼠标滑出弹窗是否销毁关闭
    ),
  ));
}

整个项目开发下来，涉及到的知识点还是蛮多的，限于篇幅，就先分享到这里。