fix(mobile): restore canvas offset after hidding the soft keyboard (#14506)

* fix(mobile): restore canvas offset after hidding the soft keyboard

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

* fix(mobile): ingore mobileFocusCanvasCursor in didChangeMetrics

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

* fix(mobile): remove unused code

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

* refact(mobile): simple refactor

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

* fix(mobile): restore canvas, cancel focus timer

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

---------

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

docs/README-RU.md

@@ -167,7 +167,7 @@ target/release/rustdesk
 - **[src/ui](https://github.com/rustdesk/rustdesk/tree/master/src/ui)**: графический пользовательский интерфейс на Sciter (устаревшее)
 - **[src/server](https://github.com/rustdesk/rustdesk/tree/master/src/server)**: сервисы аудио, буфера обмена, ввода, видео и сетевых подключений
 - **[src/client.rs](https://github.com/rustdesk/rustdesk/tree/master/src/client.rs)**: одноранговое соединение
-- **[src/rendezvous_mediator.rs](https://github.com/rustdesk/rustdesk/tree/master/src/rendezvous_mediator.rs)**: связь с [сервером Rustdesk](https://github.com/rustdesk/rustdesk-server), ожидает удаленного прямого (через TCP hole punching) или ретранслируемого соединения
+- **[src/rendezvous_mediator.rs](https://github.com/rustdesk/rustdesk/tree/master/src/rendezvous_mediator.rs)**: связь с [сервером RustDesk](https://github.com/rustdesk/rustdesk-server), ожидает удаленного прямого (через TCP hole punching) или ретранслируемого соединения
 - **[src/platform](https://github.com/rustdesk/rustdesk/tree/master/src/platform)**: специфичный для платформы код
 - **[flutter](https://github.com/rustdesk/rustdesk/tree/master/flutter)**: код Flutter для ПК-версии и мобильных устройств
 - **[flutter/web/js](https://github.com/rustdesk/rustdesk/tree/master/flutter/web/v1/js)**: JavaScript для Web-клиента Flutter

flutter/lib/mobile/pages/remote_page.dart

@@ -1,5 +1,4 @@
 import 'dart:async';
-import 'dart:ui' as ui;
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -65,9 +64,7 @@ class _RemotePageState extends State<RemotePage> with WidgetsBindingObserver {
   bool _showGestureHelp = false;
   String _value = '';
   Orientation? _currentOrientation;
-  double _viewInsetsBottom = 0;
   final _uniqueKey = UniqueKey();
-  Timer? _timerDidChangeMetrics;
   Timer? _iosKeyboardWorkaroundTimer;
 
   final _blockableOverlayState = BlockableOverlayState();
@@ -140,7 +137,6 @@ class _RemotePageState extends State<RemotePage> with WidgetsBindingObserver {
     _physicalFocusNode.dispose();
     await gFFI.close();
     _timer?.cancel();
-    _timerDidChangeMetrics?.cancel();
     _iosKeyboardWorkaroundTimer?.cancel();
     gFFI.dialogManager.dismissAll();
     await SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual,
@@ -167,26 +163,6 @@ class _RemotePageState extends State<RemotePage> with WidgetsBindingObserver {
     gFFI.invokeMethod("try_sync_clipboard");
   }
 
-  @override
-  void didChangeMetrics() {
-    // If the soft keyboard is visible and the canvas has been changed(panned or scaled)
-    // Don't try reset the view style and focus the cursor.
-    if (gFFI.cursorModel.lastKeyboardIsVisible &&
-        gFFI.canvasModel.isMobileCanvasChanged) {
-      return;
-    }
-
-    final newBottom = MediaQueryData.fromView(ui.window).viewInsets.bottom;
-    _timerDidChangeMetrics?.cancel();
-    _timerDidChangeMetrics = Timer(Duration(milliseconds: 100), () async {
-      // We need this comparation because poping up the floating action will also trigger `didChangeMetrics()`.
-      if (newBottom != _viewInsetsBottom) {
-        gFFI.canvasModel.mobileFocusCanvasCursor();
-        _viewInsetsBottom = newBottom;
-      }
-    });
-  }
-
   // to-do: It should be better to use transparent color instead of the bgColor.
   // But for now, the transparent color will cause the canvas to be white.
   // I'm sure that the white color is caused by the Overlay widget in BlockableOverlay.

flutter/lib/models/input_model.dart

@@ -348,6 +348,12 @@ class InputModel {
   final _trackpadAdjustPeerLinux = 0.06;
   // This is an experience value.
   final _trackpadAdjustMacToWin = 2.50;
+  // Ignore directional locking for very small deltas on both axes (including
+  // tiny single-axis movement) to avoid over-filtering near zero.
+  static const double _trackpadAxisNoiseThreshold = 0.2;
+  // Lock to dominant axis only when one axis is clearly stronger.
+  // 1.6 means the dominant axis must be >= 60% larger than the other.
+  static const double _trackpadAxisLockRatio = 1.6;
   int _trackpadSpeed = kDefaultTrackpadSpeed;
   double _trackpadSpeedInner = kDefaultTrackpadSpeed / 100.0;
   var _trackpadScrollUnsent = Offset.zero;
@@ -1172,6 +1178,7 @@ class InputModel {
     if (isMacOS && peerPlatform == kPeerPlatformWindows) {
       delta *= _trackpadAdjustMacToWin;
     }
+    delta = _filterTrackpadDeltaAxis(delta);
     _trackpadLastDelta = delta;
 
     var x = delta.dx.toInt();
@@ -1204,6 +1211,24 @@ class InputModel {
     }
   }
 
+  Offset _filterTrackpadDeltaAxis(Offset delta) {
+    final absDx = delta.dx.abs();
+    final absDy = delta.dy.abs();
+    // Keep diagonal intent when movement is tiny on both axes.
+    if (absDx < _trackpadAxisNoiseThreshold &&
+        absDy < _trackpadAxisNoiseThreshold) {
+      return delta;
+    }
+    // Dominant-axis lock to reduce accidental cross-axis scrolling noise.
+    if (absDy >= absDx * _trackpadAxisLockRatio) {
+      return Offset(0, delta.dy);
+    }
+    if (absDx >= absDy * _trackpadAxisLockRatio) {
+      return Offset(delta.dx, 0);
+    }
+    return delta;
+  }
+
   void _scheduleFling(double x, double y, int delay) {
     if (isViewCamera) return;
     if ((x == 0 && y == 0) || _stopFling) {

flutter/lib/models/model.dart

@@ -2152,6 +2152,9 @@ class CanvasModel with ChangeNotifier {
   ViewStyle _lastViewStyle = ViewStyle.defaultViewStyle();
 
   Timer? _timerMobileFocusCanvasCursor;
+  Timer? _timerMobileRestoreCanvasOffset;
+  Offset? _offsetBeforeMobileSoftKeyboard;
+  double? _scaleBeforeMobileSoftKeyboard;
 
   // `isMobileCanvasChanged` is used to avoid canvas reset when changing the input method
   // after showing the soft keyboard.
@@ -2639,6 +2642,9 @@ class CanvasModel with ChangeNotifier {
     _scale = 1.0;
     _lastViewStyle = ViewStyle.defaultViewStyle();
     _timerMobileFocusCanvasCursor?.cancel();
+    _timerMobileRestoreCanvasOffset?.cancel();
+    _offsetBeforeMobileSoftKeyboard = null;
+    _scaleBeforeMobileSoftKeyboard = null;
   }
 
   updateScrollPercent() {
@@ -2667,6 +2673,31 @@ class CanvasModel with ChangeNotifier {
     });
   }
 
+  void saveMobileOffsetBeforeSoftKeyboard() {
+    _timerMobileRestoreCanvasOffset?.cancel();
+    _offsetBeforeMobileSoftKeyboard = Offset(_x, _y);
+    _scaleBeforeMobileSoftKeyboard = _scale;
+  }
+
+  void restoreMobileOffsetAfterSoftKeyboard() {
+    _timerMobileRestoreCanvasOffset?.cancel();
+    _timerMobileFocusCanvasCursor?.cancel();
+    final targetOffset = _offsetBeforeMobileSoftKeyboard;
+    final targetScale = _scaleBeforeMobileSoftKeyboard;
+    if (targetOffset == null || targetScale == null) {
+      return;
+    }
+    _timerMobileRestoreCanvasOffset = Timer(Duration(milliseconds: 100), () {
+      updateSize();
+      _x = targetOffset.dx;
+      _y = targetOffset.dy;
+      _scale = targetScale;
+      _offsetBeforeMobileSoftKeyboard = null;
+      _scaleBeforeMobileSoftKeyboard = null;
+      notifyListeners();
+    });
+  }
+
   // mobile only
   // Move the canvas to make the cursor visible(center) on the screen.
   void _moveToCenterCursor() {
@@ -2919,8 +2950,13 @@ class CursorModel with ChangeNotifier {
       _lastIsBlocked = true;
     }
     if (isMobile && _lastKeyboardIsVisible != keyboardIsVisible) {
-      parent.target?.canvasModel.mobileFocusCanvasCursor();
+      if (keyboardIsVisible) {
-      parent.target?.canvasModel.isMobileCanvasChanged = false;
+        parent.target?.canvasModel.saveMobileOffsetBeforeSoftKeyboard();
+        parent.target?.canvasModel.mobileFocusCanvasCursor();
+        parent.target?.canvasModel.isMobileCanvasChanged = false;
+      } else {
+        parent.target?.canvasModel.restoreMobileOffsetAfterSoftKeyboard();
+      }
     }
     _lastKeyboardIsVisible = keyboardIsVisible;
   }

src/hbbs_http/sync.rs

@@ -286,10 +286,14 @@ fn heartbeat_url() -> String {
 
 fn handle_config_options(config_options: HashMap<String, String>) {
     let mut options = Config::get_options();
+    let default_settings = config::DEFAULT_SETTINGS.read().unwrap().clone();
     config_options
         .iter()
         .map(|(k, v)| {
-            if v.is_empty() {
+            // Priority: user config > default advanced options.
+            // Only when default advanced options are also empty, remove user option (fallback to built-in default);
+            // otherwise insert an empty value so user config remains present.
+            if v.is_empty() && default_settings.get(k).map_or("", |v| v).is_empty() {
                 options.remove(k);
             } else {
                 options.insert(k.to_string(), v.to_string());

src/lang/hu.rs

@@ -738,5 +738,7 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Changelog", "Változáslista"),
         ("keep-awake-during-outgoing-sessions-label", "Képernyő aktív állapotban tartása a kimenő munkamenetek során"),
         ("keep-awake-during-incoming-sessions-label", "Képernyő aktív állapotban tartása a bejövő munkamenetek során"),
+        ("Continue with {}", "Folytatás ezzel: {}"),
+        ("Display Name", "Kijelző név"),
     ].iter().cloned().collect();
 }