Tray

import Tray

class AppDelegate: NSObject, NSApplicationDelegate {
    
    private let tray: Tray!
    
    func applicationDidFinishLaunching(_ notification: Notification) {
        tray = Tray.install(named: "TrayIcon") { tray in 
            // config Tray here
            // 1. setView
            tray.setView(content: ContentView()) 
            // tray.setView(view: ) or tray.setView(viewController: )
            // Some other optional parameters:
            // - behavior: NSPopover behavior, default is .transient;
            // - level: NSPopover window level, default is .floating;
            // - size: Size of NSPopover, default is nil, depends on the view you passed in.

            // 2. If you do not need a view, you can set a left click event
            tray.setOnLeftClick(onClick: {
                self.onNewNoteAction()
                return true // return true, If you handled event and prevent default action, the default action is show popover view if you set.
            })

            // 3. And also you can set a right click evnet
            tray.setOnRightClick(onClick: {
                return true // return true, If you handled event and prevent default action, the default action is show menu if you set.
            })

            // 4. If you need a menu for right click.
            let menu = NSMenu()
        
            let newNoteMenuItem = NSMenuItem(title: NSLocalizedString("Menu_item_new_note", comment: ""), action: #selector(onNewNoteAction), keyEquivalent: "")
            let quitMenuItem = NSMenuItem(title: NSLocalizedString("Menu_item_quit", comment: ""), action: #selector(onQuitAction), keyEquivalent: "")
            
            menu.addItem(newNoteMenuItem)
            menu.addItem(quitMenuItem)
            tray.setMenu(menu: menu)

        }
    }
    
    @objc func onQuitAction() {
        NSApplication.shared.terminate(nil)
    }
}

@main
struct MyApp: App {
    @NSApplicationDelegateAdaptor(AppDelegate.self) var app: AppDelegate

    var body: some Scene {
        Settings {}
    }
}

// Tray install
Tray.install(content: ContentView(), size: CGSize(width: 320, height: 320))

struct ContentView: View {
    var body: some View {
        VStack {
            Text("Hello, world!")
        }
        .frame(width: 320, height: 320)
    }
}