菜单栏

A customizable application menu bar with submenus for your Flutter Desktop apps.

The menu bar is rendered inside your Flutter app (i.e. not as a native menu bar like in macOS). Native menu bars (at least for macOS) are since lately supported by Flutter. In the future, a native option in this package could get added.

Table of Contents

• Preview
• Features
• Usage
  1. Integrate the menu bar
  2. Create your menus
• Customization
  • Bar
  • Bar buttons
  • Menu and submenu
  • Menu and submenu buttons
• Contact

Preview

Features

• Application menu bar for Flutter Desktop
• Nested submenus support
• Dividers to structure submenus
• Icon in submenu buttons (optional)
• Keyboard shortcuts for button functions
• Shortcut text in submenu buttons (optional)
• Open menus and submenus on hover
• Fully customizable
• Easy to implement
• Rich widget documentation

Usage

First, download and import the package:

import 'package:menu_bar/menu_bar.dart';

1. Integrate the menu bar

Wrap your application around the MenuBarWidget widget and add an empty list to barButtons so that you have assigned the 2 necessary fields. The child is your application under the menu bar:

MenuBarWidget(
    barButtons: [],
    child: Scaffold(...),
),

You should now see an empty menu bar above your application (see picture below). To add buttons with menus, proceed to step 2.

2. Create your menus

To add buttons with menus, use the following widget structure:

MenuBarWidget
    BarButton
        SubMenu
            MenuButton
            MenuButton
            ...
    BarButton
        SubMenu
            MenuButton
            MenuButton
            ...

In this example, we will add the following menu bar:

MenuBarWidget(
    // The buttons in this List are displayed as the buttons on the bar itself
    barButtons: [
        BarButton(
            text: const Text('File', style: TextStyle(color: Colors.white)),
            submenu: SubMenu(
                menuItems: [
                    MenuButton(
                        text: const Text('Save'),
                        onTap: () {},
                        icon: const Icon(Icons.save),
                        shortcutText: 'Ctrl+S',
                    ),
                    const MenuDivider(),
                    MenuButton(
                        text: const Text('Exit'),
                        onTap: () {},
                        icon: const Icon(Icons.exit_to_app),
                        shortcutText: 'Ctrl+Q',
                    ),
                ],
            ),
        ),
        BarButton(
            text: const Text('Help', style: TextStyle(color: Colors.white)),
            submenu: SubMenu(
                menuItems: [
                    MenuButton(
                      text: const Text('View License'),
                      onTap: () {},
                    ),
                    MenuButton(
                      text: const Text('About'),
                      onTap: () {},
                      icon: const Icon(Icons.info),
                    ),
                ],
            ),
        ),
    ],

    // Set the child, i.e. the application under the menu bar
    child: Scaffold(...),
),

3. Customize the menu bar

For customization options, see #Customization below or hover over the widgets for all the options in your preferred IDE when integrating the menu bar.

For a complete example, check out example.dart

Customization

Bar customization

See class MenuStyle in https://api.flutter.dev/flutter/material/MenuStyle-class.html.

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Bar button customization

See class ButtonStyle in https://api.flutter.dev/flutter/material/ButtonStyle-class.html.

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Menu and submenu customization

See class MenuStyle in https://api.flutter.dev/flutter/material/MenuStyle-class.html.

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Menu and submenu buttons customization

See class ButtonStyle in https://api.flutter.dev/flutter/material/ButtonStyle-class.html.

Contact

If you want to report a bug, request a feature or improve something, feel free to file an issue in the GitHub repository.