fix wayland input

Signed-off-by: fufesou <shuanglongchen@yeah.net>

flutter/lib/common/widgets/remote_input.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:flutter_hbb/models/state_model.dart';
 
 import '../../models/input_model.dart';
 
@@ -25,7 +26,8 @@ class RawKeyFocusScope extends StatelessWidget {
             canRequestFocus: true,
             focusNode: focusNode,
             onFocusChange: onFocusChange,
-            onKey: inputModel.handleRawKeyEvent,
+            onKey:
+                stateGlobal.grabKeyboard ? inputModel.handleRawKeyEvent : null,
             child: child));
   }
 }

flutter/lib/desktop/screen/desktop_remote_screen.dart

@@ -3,6 +3,7 @@ import 'package:flutter_hbb/common.dart';
 import 'package:flutter_hbb/desktop/pages/remote_tab_page.dart';
 import 'package:flutter_hbb/models/platform_model.dart';
 import 'package:flutter_hbb/desktop/widgets/refresh_wrapper.dart';
+import 'package:flutter_hbb/models/state_model.dart';
 import 'package:provider/provider.dart';
 
 /// multi-tab desktop remote screen
@@ -10,7 +11,9 @@ class DesktopRemoteScreen extends StatelessWidget {
   final Map<String, dynamic> params;
 
   DesktopRemoteScreen({Key? key, required this.params}) : super(key: key) {
-    bind.mainStartGrabKeyboard();
+    if (!bind.mainStartGrabKeyboard()) {
+      stateGlobal.grabKeyboard = true;
+    }
   }
 
   @override

flutter/lib/models/input_model.dart

@@ -119,8 +119,11 @@ class InputModel {
       keyCode = newData.keyCode;
     } else if (e.data is RawKeyEventDataLinux) {
       RawKeyEventDataLinux newData = e.data as RawKeyEventDataLinux;
-      scanCode = newData.scanCode;
-      keyCode = newData.keyCode;
+      // scanCode and keyCode of RawKeyEventDataLinux are incorrect.
+      // 1. scanCode means keycode
+      // 2. keyCode means keysym
+      scanCode = 0;
+      keyCode = newData.scanCode;
     } else if (e.data is RawKeyEventDataAndroid) {
       RawKeyEventDataAndroid newData = e.data as RawKeyEventDataAndroid;
       scanCode = newData.scanCode + 8;
@@ -135,16 +138,33 @@ class InputModel {
     } else {
       down = false;
     }
-    inputRawKey(e.character ?? "", keyCode, scanCode, down);
+    inputRawKey(e.character ?? '', keyCode, scanCode, down);
   }
 
   /// Send raw Key Event
   void inputRawKey(String name, int keyCode, int scanCode, bool down) {
+    const capslock = 1;
+    const numlock = 2;
+    const scrolllock = 3;
+    int lockModes = 0;
+    if (HardwareKeyboard.instance.lockModesEnabled
+        .contains(KeyboardLockMode.capsLock)) {
+      lockModes |= (1 << capslock);
+    }
+    if (HardwareKeyboard.instance.lockModesEnabled
+        .contains(KeyboardLockMode.numLock)) {
+      lockModes |= (1 << numlock);
+    }
+    if (HardwareKeyboard.instance.lockModesEnabled
+        .contains(KeyboardLockMode.scrollLock)) {
+      lockModes |= (1 << scrolllock);
+    }
     bind.sessionHandleFlutterKeyEvent(
         id: id,
         name: name,
         keycode: keyCode,
         scancode: scanCode,
+        lockModes: lockModes,
         downOrUp: down);
   }
 

flutter/lib/models/state_model.dart

@@ -9,6 +9,7 @@ import '../consts.dart';
 class StateGlobal {
   int _windowId = -1;
   bool _fullscreen = false;
+  bool grabKeyboard = false;
   final RxBool _showTabBar = true.obs;
   final RxDouble _resizeEdgeSize = RxDouble(kWindowEdgeSize);
   final RxDouble _windowBorderWidth = RxDouble(kWindowBorderWidth);