HelloWorld.swift

import Cocoa

class AppDelegate: NSObject, NSApplicationDelegate {
    var window: NSWindow!
    
    func applicationDidFinishLaunching(_ notification: Notification) {
        // Définir l'icône de l'application
        if let image = createApplicationIcon() {
            NSApplication.shared.applicationIconImage = image
        }
        
        // Créer la fenêtre
        let windowRect = NSRect(x: 100, y: 100, width: 400, height: 200)
        window = NSWindow(
            contentRect: windowRect,
            styleMask: [.titled, .closable, .miniaturizable],
            backing: .buffered,
            defer: false
        )
        
        // Configurer la fenêtre
        window.title = "Hello World"
        window.center()
        
        // Créer le label
        let label = NSTextField(frame: NSRect(x: 0, y: 0, width: 200, height: 50))
        label.stringValue = "Hello World!"
        label.isEditable = false
        label.isBordered = false
        label.backgroundColor = .clear
        label.alignment = .center
        label.translatesAutoresizingMaskIntoConstraints = false
        
        // Ajouter le label à la fenêtre
        window.contentView?.addSubview(label)
        
        // Centrer le label dans la fenêtre
        if let contentView = window.contentView {
            NSLayoutConstraint.activate([
                label.centerXAnchor.constraint(equalTo: contentView.centerXAnchor),
                label.centerYAnchor.constraint(equalTo: contentView.centerYAnchor)
            ])
        }
        
        // Afficher la fenêtre et activer l'application
        window.makeKeyAndOrderFront(nil)
        NSApp.activate(ignoringOtherApps: true)
    }
    
    private func createApplicationIcon() -> NSImage? {
        let size = NSSize(width: 128, height: 128)
        let image = NSImage(size: size)
        
        image.lockFocus()
        
        // Dessiner un cercle rouge comme exemple d'icône
        let rect = NSRect(x: 0, y: 0, width: size.width, height: size.height)
        NSColor.red.setFill()
        let circlePath = NSBezierPath(ovalIn: rect.insetBy(dx: 10, dy: 10))
        circlePath.fill()
        
        // Dessiner un "H" blanc au centre
        let text = "H" as NSString
        let font = NSFont.boldSystemFont(ofSize: 80)
        let attributes: [NSAttributedString.Key: Any] = [
            .font: font,
            .foregroundColor: NSColor.white
        ]
        let textSize = text.size(withAttributes: attributes)
        let textPoint = NSPoint(
            x: (size.width - textSize.width) / 2,
            y: (size.height - textSize.height) / 2
        )
        text.draw(at: textPoint, withAttributes: attributes)
        
        image.unlockFocus()
        return image
    }
    
    func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
        return true
    }
}
// Point d'entrée de l'application
let app = NSApplication.shared
let delegate = AppDelegate()
app.delegate = delegate
app.setActivationPolicy(.regular)
app.run()