Migrate UIKit to SwiftUI

ScreenCut/ScreenCut/Action/ScreenCutApp.swift

@@ -25,34 +25,22 @@ struct ScreenCutApp: App {
     }
 
     var body: some Scene {
-//         直接使用MenuBar 替代掉主窗口
+        // 直接使用MenuBar 替代掉主窗口
         MenuBarExtra("", systemImage: "scissors"){
-            Button("截屏") {
-                ScreenCut.saveScreenFullImage()
-            }
-            .padding()
-            Button("选择截屏") {
-                NSCursor.crosshair.set()
-                ScreenshotWindow().makeKeyAndOrderFront(nil)
-            }
-            Divider()
-            Button("偏好设置") {
-                let aboutWindowController = PreferenceSettingsViewController()
-                aboutWindowController.showWindow(nil)
-            }
-            .padding()
-            Button("关于"){
-                let aboutWindowController = AboutWindowController()
-                aboutWindowController.showWindow(nil)
-            }
-            .padding()
-            Divider()
-            Button("退出") {
-                NSApplication.shared.terminate(nil)
-            }
-            .keyboardShortcut("Q", modifiers: [.command])
+            MenuBarContentView()
+        }
+
+        // SwiftUI 原生的设置窗口
+        Settings {
+            PreferenceSettingsView()
+                .frame(width: 560, height: 500)
+        }
+
+        // SwiftUI 原生的关于窗口
+        WindowGroup("关于", id: "about") {
+            AboutView()
+                .frame(width: 540, height: 200)
         }
-
     }
 }
 
@@ -66,3 +54,44 @@ extension Scene {
         }
     }
 }
+
+// 菜单栏内容，使用 SwiftUI 的 openSettings/openWindow 打开设置与关于窗口
+private struct MenuBarContentView: View {
+    @Environment(\.openWindow) private var openWindow
+    @Environment(\.openSettings) private var openSettings
+
+    var body: some View {
+        Button("截屏") {
+            ScreenCut.saveScreenFullImage()
+        }
+        .padding()
+        Button("选择截屏") {
+            NSCursor.crosshair.set()
+            ScreenshotWindow().makeKeyAndOrderFront(nil)
+        }
+        Divider()
+        Button("偏好设置") {
+            if #available(macOS 13.0, *) {
+                openSettings()
+            } else {
+                let controller = PreferenceSettingsViewController()
+                controller.showWindow(nil)
+            }
+        }
+        .padding()
+        Button("关于"){
+            if #available(macOS 13.0, *) {
+                openWindow(id: "about")
+            } else {
+                let controller = AboutWindowController()
+                controller.showWindow(nil)
+            }
+        }
+        .padding()
+        Divider()
+        Button("退出") {
+            NSApplication.shared.terminate(nil)
+        }
+        .keyboardShortcut("Q", modifiers: [.command])
+    }
+}