fix: linux, window, workaround, mint, mate (#10146)

* refact: linux, window, workaround, mint, mate

Signed-off-by: fufesou <linlong1266@gmail.com>

* refact: case insensitive

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>

flutter/lib/common.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 import 'dart:convert';
 import 'dart:math';
+import 'dart:io';
 
 import 'package:back_button_interceptor/back_button_interceptor.dart';
 import 'package:desktop_multi_window/desktop_multi_window.dart';
@@ -3459,6 +3460,35 @@ Widget buildPresetPasswordWarning() {
   );
 }
 
+bool get isLinuxMateDesktop =>
+    isLinux &&
+    (Platform.environment['XDG_CURRENT_DESKTOP']?.toLowerCase() == 'mate' ||
+        Platform.environment['XDG_SESSION_DESKTOP']?.toLowerCase() == 'mate' ||
+        Platform.environment['DESKTOP_SESSION']?.toLowerCase() == 'mate');
+
+Map<String, dynamic>? _linuxOsDistro;
+
+String getLinuxOsDistroId() {
+  if (_linuxOsDistro == null) {
+    String osInfo = bind.getOsDistroInfo();
+    if (osInfo.isEmpty) {
+      _linuxOsDistro = {};
+    } else {
+      try {
+        _linuxOsDistro = jsonDecode(osInfo);
+      } catch (e) {
+        debugPrint('Failed to parse os info: $e');
+        // Don't call `bind.getOsDistroInfo()` again if failed to parse osInfo.
+        _linuxOsDistro = {};
+      }
+    }
+  }
+  return (_linuxOsDistro?['id'] ?? '') as String;
+}
+
+bool get isLinuxMint =>
+    getLinuxOsDistroId().toLowerCase().contains('linuxmint');
+
 // https://github.com/leanflutter/window_manager/blob/87dd7a50b4cb47a375b9fc697f05e56eea0a2ab3/lib/src/widgets/virtual_window_frame.dart#L44
 Widget buildVirtualWindowFrame(BuildContext context, Widget child) {
   boxShadow() => isMainDesktopWindow

flutter/lib/main.dart

@@ -483,7 +483,16 @@ class _AppState extends State<App> with WidgetsBindingObserver {
                     child = keyListenerBuilder(context, child);
                   }
                   if (isLinux) {
-                    child = buildVirtualWindowFrame(context, child);
+                    // `(!(isLinuxMateDesktop || isLinuxMint))` is not used here for clarity.
+                    // `isLinuxMint` will call ffi function.
+                    if (!isLinuxMateDesktop) {
+                      if (!isLinuxMint) {
+                        debugPrint(
+                            'Linux distro is not linuxmint, and desktop is not mate, '
+                            'so we build virtual window frame.');
+                        child = buildVirtualWindowFrame(context, child);
+                      }
+                    }
                   }
                   return child;
                 },

flutter/lib/web/bridge.dart

@@ -1828,5 +1828,9 @@ class RustdeskImpl {
     throw UnimplementedError("sessionGetConnToken");
   }
 
+  String getOsDistroInfo({dynamic hint}) {
+    return '';
+  }
+
   void dispose() {}
 }