Merge pull request #3037 from Kingtous/master

fix: synchronize macOS window theme on flutter theme changed.

flutter/lib/common.dart

@@ -9,6 +9,7 @@ import 'package:back_button_interceptor/back_button_interceptor.dart';
 import 'package:desktop_multi_window/desktop_multi_window.dart';
 import 'package:ffi/ffi.dart';
 import 'package:flutter/foundation.dart';
+import 'package:flutter_hbb/utils/platform_channel.dart';
 import 'package:win32/win32.dart' as win32;
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
@@ -224,16 +225,18 @@ class MyTheme {
     return themeModeFromString(bind.mainGetLocalOption(key: kCommConfKeyTheme));
   }
 
-  static void changeDarkMode(ThemeMode mode) {
+  static void changeDarkMode(ThemeMode mode) async {
     Get.changeThemeMode(mode);
     if (desktopType == DesktopType.main) {
       if (mode == ThemeMode.system) {
-        bind.mainSetLocalOption(key: kCommConfKeyTheme, value: '');
+        await bind.mainSetLocalOption(key: kCommConfKeyTheme, value: '');
       } else {
-        bind.mainSetLocalOption(
+        await bind.mainSetLocalOption(
             key: kCommConfKeyTheme, value: mode.toShortString());
       }
-      bind.mainChangeTheme(dark: mode.toShortString());
+      await bind.mainChangeTheme(dark: mode.toShortString());
+      // Synchronize the window theme of the system.
+      updateSystemWindowTheme();
     }
   }
 
@@ -1686,3 +1689,16 @@ String getWindowName({WindowType? overrideType}) {
 String getWindowNameWithId(String id, {WindowType? overrideType}) {
   return "${DesktopTab.labelGetterAlias(id).value} - ${getWindowName(overrideType: overrideType)}";
 }
+
+Future<void> updateSystemWindowTheme() async {
+  // Set system window theme for macOS.
+  final userPreference = MyTheme.getThemeModePreference();
+  if (userPreference != ThemeMode.system) {
+    if (Platform.isMacOS) {
+      await RdPlatformChannel.instance.changeSystemWindowTheme(
+          userPreference == ThemeMode.light
+              ? SystemWindowTheme.light
+              : SystemWindowTheme.dark);
+    }
+  }
+}

flutter/lib/desktop/widgets/refresh_wrapper.dart

@@ -1,9 +1,11 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_hbb/common.dart';
 import 'package:flutter_hbb/main.dart';
 import 'package:get/get.dart';
 
 class RefreshWrapper extends StatefulWidget {
   final Widget Function(BuildContext context) builder;
+
   const RefreshWrapper({super.key, required this.builder});
 
   @override
@@ -30,6 +32,8 @@ class RefreshWrapperState extends State<RefreshWrapper> {
     if (Get.context != null) {
       (context as Element).visitChildren(_rebuildElement);
     }
+    // Synchronize the window theme of the system.
+    updateSystemWindowTheme();
     setState(() {});
   }
 

flutter/lib/main.dart

@@ -108,6 +108,8 @@ Future<void> initEnv(String appType) async {
   await initGlobalFFI();
   // await Firebase.initializeApp();
   _registerEventHandler();
+  // Update the system theme.
+  updateSystemWindowTheme();
 }
 
 void runMainApp(bool startService) async {
@@ -327,6 +329,8 @@ class _AppState extends State<App> {
         to = ThemeMode.light;
       }
       Get.changeThemeMode(to);
+      // Synchronize the window theme of the system.
+      updateSystemWindowTheme();
       if (desktopType == DesktopType.main) {
         bind.mainChangeTheme(dark: to.toShortString());
       }

flutter/lib/utils/platform_channel.dart

@@ -0,0 +1,34 @@
+import 'dart:io';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_hbb/main.dart';
+
+enum SystemWindowTheme { light, dark }
+
+/// The platform channel for RustDesk.
+class RdPlatformChannel {
+  RdPlatformChannel._();
+
+  static final RdPlatformChannel _windowUtil = RdPlatformChannel._();
+
+  static RdPlatformChannel get instance => _windowUtil;
+
+  final MethodChannel _osxMethodChannel =
+      MethodChannel("org.rustdesk.rustdesk/macos");
+  final MethodChannel _winMethodChannel =
+      MethodChannel("org.rustdesk.rustdesk/windows");
+  final MethodChannel _linuxMethodChannel =
+      MethodChannel("org.rustdesk.rustdesk/linux");
+
+  /// Change the theme of the system window
+  Future<void> changeSystemWindowTheme(SystemWindowTheme theme) {
+    assert(Platform.isMacOS);
+    if (kDebugMode) {
+      print(
+          "[Window ${kWindowId ?? 'Main'}] change system window theme to ${theme.name}");
+    }
+    return _osxMethodChannel
+        .invokeMethod("setWindowTheme", {"themeName": theme.name});
+  }
+}

flutter/macos/Runner/MainFlutterWindow.swift

@@ -27,12 +27,16 @@ class MainFlutterWindow: NSWindow {
         let windowFrame = self.frame
         self.contentViewController = flutterViewController
         self.setFrame(windowFrame, display: true)
+        // register self method handler
+        let registrar = flutterViewController.registrar(forPlugin: "RustDeskPlugin")
+        setMethodHandler(registrar: registrar)
         
         RegisterGeneratedPlugins(registry: flutterViewController)
 
         FlutterMultiWindowPlugin.setOnWindowCreatedCallback { controller in
             // Register the plugin which you want access from other isolate.
             // DesktopLifecyclePlugin.register(with: controller.registrar(forPlugin: "DesktopLifecyclePlugin"))
+            self.setMethodHandler(registrar: controller.registrar(forPlugin: "RustDeskPlugin"))
             DesktopDropPlugin.register(with: controller.registrar(forPlugin: "DesktopDropPlugin"))
             DeviceInfoPlusMacosPlugin.register(with: controller.registrar(forPlugin: "DeviceInfoPlusMacosPlugin"))
             FlutterCustomCursorPlugin.register(with: controller.registrar(forPlugin: "FlutterCustomCursorPlugin"))
@@ -53,4 +57,31 @@ class MainFlutterWindow: NSWindow {
         super.order(place, relativeTo: otherWin)
         hiddenWindowAtLaunch()
     }
+    
+    /// Override window theme.
+    public func setWindowInterfaceMode(window: NSWindow, themeName: String) {
+        window.appearance = NSAppearance(named: themeName == "light" ? .aqua : .darkAqua)
     }
+    
+    public func setMethodHandler(registrar: FlutterPluginRegistrar) {
+        let channel = FlutterMethodChannel(name: "org.rustdesk.rustdesk/macos", binaryMessenger: registrar.messenger)
+        channel.setMethodCallHandler({
+            (call, result) -> Void in
+                switch call.method {
+                case "setWindowTheme":
+                    let arg = call.arguments as! [String: Any]
+                    let themeName = arg["themeName"] as? String
+                    guard let window = registrar.view?.window else {
+                        result(nil)
+                        return
+                    }
+                    self.setWindowInterfaceMode(window: window,themeName: themeName ?? "light")
+                    result(nil)
+                    break;
+                default:
+                    result(FlutterMethodNotImplemented)
+                }
+        })
+    }
+}
+

flutter/pubspec.yaml

@@ -61,7 +61,7 @@ dependencies:
             url: https://github.com/Kingtous/rustdesk_desktop_multi_window
             ref: bc8604a88e52b2b6e64d2661ae49a71450a47af8
     freezed_annotation: ^2.0.3
-    flutter_custom_cursor: ^0.0.2
+    flutter_custom_cursor: ^0.0.4
     window_size:
         git:
             url: https://github.com/google/flutter-desktop-embedding.git