keep text scale factor (except android)

Signed-off-by: 21pages <pages21@163.com>

flutter/lib/main.dart

@@ -112,12 +112,14 @@ void runRemoteScreen(Map<String, dynamic> argument) async {
     navigatorObservers: [
       // FirebaseAnalyticsObserver(analytics: analytics),
     ],
+    builder: _keepScaleBuilder(),
   ));
 }
 
 void runFileTransferScreen(Map<String, dynamic> argument) async {
   await initEnv(kAppTypeDesktopFileTransfer);
-  runApp(GetMaterialApp(
+  runApp(
+    GetMaterialApp(
       navigatorKey: globalKey,
       debugShowCheckedModeBanner: false,
       title: 'RustDesk - File Transfer',
@@ -125,7 +127,10 @@ void runFileTransferScreen(Map<String, dynamic> argument) async {
       home: DesktopFileTransferScreen(params: argument),
       navigatorObservers: [
         // FirebaseAnalyticsObserver(analytics: analytics),
-      ]));
+      ],
+      builder: _keepScaleBuilder(),
+    ),
+  );
 }
 
 void runConnectionManagerScreen() async {
@@ -142,7 +147,8 @@ void runConnectionManagerScreen() async {
   runApp(GetMaterialApp(
       debugShowCheckedModeBanner: false,
       theme: getCurrentTheme(),
-      home: DesktopServerPage()));
+      home: DesktopServerPage(),
+      builder: _keepScaleBuilder()));
 }
 
 WindowOptions getHiddenTitleBarWindowOptions(Size size) {
@@ -187,7 +193,19 @@ class App extends StatelessWidget {
             ? (_, child) => AccessibilityListener(
                   child: child,
                 )
-              : null),
+            : _keepScaleBuilder(),
+      ),
     );
   }
 }
+
+_keepScaleBuilder() {
+  return (BuildContext context, Widget? child) {
+    return MediaQuery(
+      data: MediaQuery.of(context).copyWith(
+        textScaleFactor: 1.0,
+      ),
+      child: child ?? Container(),
+    );
+  };
+}