Crate muda

muda is a Menu Utilities library for Desktop Applications.

Platforms supported:

• Windows
• macOS
• Linux (gtk Only)

Platform-specific notes:

• On Windows, accelerators don’t work unless the win32 message loop calls TranslateAcceleratorW. See Menu::init_for_hwnd for more details

Dependencies (Linux Only)

gtk is used for menus and libxdo is used to make the predfined Copy, Cut, Paste and SelectAll menu items work. Be sure to install following packages before building:

Arch Linux / Manjaro:

pacman -S gtk3 xdotool

Debian / Ubuntu:

sudo apt install libgtk-3-dev libxdo-dev

Example

Create the menu and add your items

let menu = Menu::new();
let menu_item2 = MenuItem::new("Menu item #2", false, None);
let submenu = Submenu::with_items(
    "Submenu Outer",
    true,
    &[
        &MenuItem::new(
            "Menu item #1",
            true,
            Some(Accelerator::new(Some(Modifiers::ALT), Code::KeyD)),
        ),
        &PredefinedMenuItem::separator(),
        &menu_item2,
        &MenuItem::new("Menu item #3", true, None),
        &PredefinedMenuItem::separator(),
        &Submenu::with_items(
            "Submenu Inner",
            true,
            &[
                &MenuItem::new("Submenu item #1", true, None),
                &PredefinedMenuItem::separator(),
                &menu_item2,
            ],
        ).unwrap(),
    ],
);

Then add your root menu to a Window on Windows and Linux or use it as your global app menu on macOS

// --snip--
#[cfg(target_os = "windows")]
menu.init_for_hwnd(window_hwnd);
#[cfg(target_os = "linux")]
menu.init_for_gtk_window(&gtk_window, Some(&vertical_gtk_box));
#[cfg(target_os = "macos")]
menu.init_for_nsapp();

Context menus (Popup menus)

You can also use a Menu or a Submenu show a context menu.

use muda::ContextMenu;
// --snip--
let position = muda::PhysicalPosition { x: 100., y: 120. };
#[cfg(target_os = "windows")]
menu.show_context_menu_for_hwnd(window_hwnd, Some(position.into()));
#[cfg(target_os = "linux")]
menu.show_context_menu_for_gtk_window(&gtk_window, Some(position.into()));
#[cfg(target_os = "macos")]
menu.show_context_menu_for_nsview(nsview, Some(position.into()));

Processing menu events

You can use MenuEvent::receiver to get a reference to the MenuEventReceiver which you can use to listen to events when a menu item is activated

if let Ok(event) = MenuEvent::receiver().try_recv() {
    match event.id {
        id if id == save_item.id() => {
            println!("Save menu item activated");
        },
        _ => {}
    }
}

Modules

• accelerator
  Accelerators describe keyboard shortcuts for menu items.

Structs

• AboutMetadata
  Application metadata for the PredefinedMenuItem::about.
• AboutMetadataBuilder
  A builder type for AboutMetadata.
• CheckMenuItem
  A check menu item inside a Menu or Submenu and usually contains a text and a check mark or a similar toggle that corresponds to a checked and unchecked states.
• CheckMenuItemBuilder
  A builder type for CheckMenuItem
• Icon
  An icon used for the window titlebar, taskbar, etc.
• IconMenuItem
  An icon menu item inside a Menu or Submenu and usually contains an icon and a text.
• IconMenuItemBuilder
  A builder type for IconMenuItem
• LogicalPosition
  A position represented in logical pixels.
• Menu
  A root menu that can be added to a Window on Windows and Linux and used as the app global menu on macOS.
• MenuEvent
  Describes a menu event emitted when a menu item is activated
• MenuId
  An unique id that is associated with a menu or a menu item.
• MenuItem
  A menu item inside a Menu or Submenu and contains only text.
• MenuItemBuilder
  A builder type for MenuItem
• PhysicalPosition
  A position represented in physical pixels.
• PredefinedMenuItem
  A predefined (native) menu item which has a predfined behavior by the OS or by this crate.
• Submenu
  A menu that can be added to a Menu or another Submenu.
• SubmenuBuilder
  A builder type for Submenu

Enums

• BadIcon
  An error produced when using Icon::from_rgba with invalid arguments.
• Error
  Errors returned by muda.
• MenuItemKind
  An enumeration of all available menu types, useful to match against the items returned from Menu::items or Submenu::items
• NativeIcon
  A native Icon to be used for the menu item
• Position
  A position that’s either physical or logical.

Traits

• ContextMenu
  A helper trait with methods to help creating a context menu.
• IsMenuItem
  A trait that defines a generic item in a menu, which may be one of MenuItemKind
• Pixel

Functions

• validate_scale_factor
  Checks that the scale factor is a normal positive f64.

Type Aliases

• MenuEventReceiver
  A reciever that could be used to listen to menu events.
• Result
  Convenient type alias of Result type for muda.