add:多屏支持

Ink Canvas/Helpers/GlobalHotkeyManager.cs

@@ -567,6 +567,36 @@ namespace Ink_Canvas.Helpers
             }
         }
 
+        /// <summary>
+        /// 刷新多屏相关设置（开关和跟随鼠标策略）。
+        /// </summary>
+        public void RefreshMultiScreenSettings()
+        {
+            try
+            {
+                var advanced = MainWindow.Settings.Advanced;
+                _isMultiScreenMode = advanced.EnableMultiScreenSupport && ScreenDetectionHelper.HasMultipleScreens();
+                _enableScreenSpecificHotkeys = _isMultiScreenMode;
+
+                if (_isMultiScreenMode)
+                {
+                    _currentScreen = advanced.FollowMouseForScreenSelection
+                        ? Screen.FromPoint(Control.MousePosition)
+                        : ScreenDetectionHelper.GetWindowScreen(_mainWindow);
+                }
+                else
+                {
+                    _currentScreen = ScreenDetectionHelper.GetPrimaryScreen();
+                }
+
+                RefreshHotkeysForCurrentScreen();
+            }
+            catch (Exception ex)
+            {
+                LogHelper.WriteLogToFile($"刷新多屏设置时出错: {ex.Message}", LogHelper.LogType.Error);
+            }
+        }
+
         /// <summary>
         /// 获取当前屏幕信息
         /// </summary>
@@ -624,13 +654,15 @@ namespace Ink_Canvas.Helpers
         {
             try
             {
-                // 检测是否有多个屏幕
+                var advanced = MainWindow.Settings.Advanced;
-                _isMultiScreenMode = ScreenDetectionHelper.HasMultipleScreens();
+                _isMultiScreenMode = advanced.EnableMultiScreenSupport && ScreenDetectionHelper.HasMultipleScreens();
+                _enableScreenSpecificHotkeys = _isMultiScreenMode;
 
                 if (_isMultiScreenMode)
                 {
-                    // 获取当前窗口所在的屏幕
+                    _currentScreen = advanced.FollowMouseForScreenSelection
-                    _currentScreen = ScreenDetectionHelper.GetWindowScreen(_mainWindow);
+                        ? Screen.FromPoint(Control.MousePosition)
+                        : ScreenDetectionHelper.GetWindowScreen(_mainWindow);
 
                     // 监听窗口位置变化事件
                     _mainWindow.LocationChanged += OnWindowLocationChanged;
@@ -688,6 +720,9 @@ namespace Ink_Canvas.Helpers
                 if (!_isMultiScreenMode || !_enableScreenSpecificHotkeys)
                     return;
 
+                if (MainWindow.Settings.Advanced.FollowMouseForScreenSelection)
+                    return;
+
                 var newScreen = ScreenDetectionHelper.GetWindowScreen(_mainWindow);
                 if (newScreen != null && newScreen != _currentScreen)
                 {
@@ -800,9 +835,16 @@ namespace Ink_Canvas.Helpers
                 if (!_isMultiScreenMode || !_enableScreenSpecificHotkeys)
                     return;
 
-                // 检查鼠标是否在当前窗口所在的屏幕上
                 var mousePosition = Control.MousePosition;
-                var currentScreen = Screen.FromPoint(mousePosition);
+                var mouseScreen = Screen.FromPoint(mousePosition);
+
+                if (MainWindow.Settings.Advanced.FollowMouseForScreenSelection &&
+                    mouseScreen != null &&
+                    mouseScreen != _currentScreen)
+                {
+                    _currentScreen = mouseScreen;
+                    RefreshHotkeysForCurrentScreen();
+                }
 
                 // 无论屏幕是否变化，都检查热键状态
                 // 这样可以确保热键状态始终与当前上下文保持一致

Ink Canvas/MainWindow.xaml.cs

@@ -2547,6 +2547,22 @@ namespace Ink_Canvas
             }
         }
 
+        /// <summary>
+        /// 应用多屏设置到全局热键管理器。
+        /// </summary>
+        public void ApplyMultiScreenSettings()
+        {
+            try
+            {
+                _globalHotkeyManager?.RefreshMultiScreenSettings();
+                RefreshFloatingBarScreenFollowState();
+            }
+            catch (Exception ex)
+            {
+                LogHelper.WriteLogToFile($"应用多屏设置时出错: {ex.Message}", LogHelper.LogType.Error);
+            }
+        }
+
         /// <summary>
         /// 打开快捷键设置窗口
         /// </summary>

Ink Canvas/MainWindow_cs/MW_FloatingBarIcons.cs

@@ -204,6 +204,10 @@ namespace Ink_Canvas
         /// 用于记录上次在PPT中的坐标
         /// </summary>
         private Point pointPPT = new Point(-1, -1);
+        private DispatcherTimer _floatingBarScreenFollowTimer;
+        private string _lastFloatingBarScreenDeviceName;
+        private string _lastCanvasScreenDeviceName;
+        private bool _isRebuildingCanvasForScreen;
 
         /// <summary>
         /// 浮动工具栏移动事件处理
@@ -1733,8 +1737,7 @@ namespace Ink_Canvas
                     dpiScaleY = source.CompositionTarget.TransformToDevice.M22;
                 }
 
-                var windowHandle = new WindowInteropHelper(this).Handle;
+                var screen = GetFloatingBarTargetScreen();
-                var screen = Screen.FromHandle(windowHandle);
                 double screenWidth, screenHeight;
                 double toolbarHeight;
                 if (Settings.Advanced.IsEnableAvoidFullScreenHelper && PosXCaculatedWithTaskbarHeight)
@@ -1889,8 +1892,7 @@ namespace Ink_Canvas
                     dpiScaleY = source.CompositionTarget.TransformToDevice.M22;
                 }
 
-                var windowHandle = new WindowInteropHelper(this).Handle;
+                var screen = GetFloatingBarTargetScreen();
-                var screen = Screen.FromHandle(windowHandle);
                 double screenWidth, screenHeight;
                 double toolbarHeight;
                 if (Settings.Advanced.IsEnableAvoidFullScreenHelper)
@@ -2008,8 +2010,7 @@ namespace Ink_Canvas
                     dpiScaleY = source.CompositionTarget.TransformToDevice.M22;
                 }
 
-                var windowHandle = new WindowInteropHelper(this).Handle;
+                var screen = GetFloatingBarTargetScreen();
-                var screen = Screen.FromHandle(windowHandle);
                 double screenWidth = screen.Bounds.Width / dpiScaleX, screenHeight = screen.Bounds.Height / dpiScaleY;
                 // 仅计算Windows任务栏高度，不考虑其他程序对工作区的影响
                 var toolbarHeight = ForegroundWindowInfo.GetTaskbarHeight(screen, dpiScaleY);
@@ -2104,6 +2105,203 @@ namespace Ink_Canvas
             }
         }
 
+        private Screen GetFloatingBarTargetScreen()
+        {
+            try
+            {
+                if (Settings.Advanced.EnableMultiScreenSupport &&
+                    Settings.Advanced.FollowMouseForScreenSelection &&
+                    ScreenDetectionHelper.HasMultipleScreens())
+                {
+                    var mouseScreen = Screen.FromPoint(System.Windows.Forms.Control.MousePosition);
+                    if (mouseScreen != null)
+                    {
+                        return mouseScreen;
+                    }
+                }
+
+                var windowHandle = new WindowInteropHelper(this).Handle;
+                return Screen.FromHandle(windowHandle);
+            }
+            catch
+            {
+                return Screen.PrimaryScreen;
+            }
+        }
+
+        private Screen GetCurrentFloatingBarScreen()
+        {
+            try
+            {
+                if (ViewboxFloatingBar == null || !IsLoaded)
+                {
+                    return null;
+                }
+
+                var center = ViewboxFloatingBar.PointToScreen(new Point(
+                    Math.Max(0, ViewboxFloatingBar.ActualWidth / 2),
+                    Math.Max(0, ViewboxFloatingBar.ActualHeight / 2)));
+                return Screen.FromPoint(new System.Drawing.Point((int)center.X, (int)center.Y));
+            }
+            catch
+            {
+                return null;
+            }
+        }
+
+        internal void RefreshFloatingBarScreenFollowState()
+        {
+            try
+            {
+                var enableFollow = Settings.Advanced.EnableMultiScreenSupport &&
+                                   Settings.Advanced.FollowMouseForScreenSelection &&
+                                   ScreenDetectionHelper.HasMultipleScreens();
+
+                if (!enableFollow)
+                {
+                    _floatingBarScreenFollowTimer?.Stop();
+                    _lastFloatingBarScreenDeviceName = null;
+                    return;
+                }
+
+                if (_floatingBarScreenFollowTimer == null)
+                {
+                    _floatingBarScreenFollowTimer = new DispatcherTimer
+                    {
+                        Interval = TimeSpan.FromMilliseconds(350)
+                    };
+                    _floatingBarScreenFollowTimer.Tick += FloatingBarScreenFollowTimer_Tick;
+                }
+
+                _lastFloatingBarScreenDeviceName = GetCurrentFloatingBarScreen()?.DeviceName;
+                _lastCanvasScreenDeviceName = _lastFloatingBarScreenDeviceName;
+
+                if (!_floatingBarScreenFollowTimer.IsEnabled)
+                {
+                    _floatingBarScreenFollowTimer.Start();
+                }
+            }
+            catch (Exception ex)
+            {
+                LogHelper.WriteLogToFile($"刷新浮动栏多屏跟随状态失败: {ex.Message}", LogHelper.LogType.Warning);
+            }
+        }
+
+        private void FloatingBarScreenFollowTimer_Tick(object sender, EventArgs e)
+        {
+            try
+            {
+                if (!Settings.Advanced.EnableMultiScreenSupport ||
+                    !Settings.Advanced.FollowMouseForScreenSelection ||
+                    !ScreenDetectionHelper.HasMultipleScreens())
+                {
+                    _floatingBarScreenFollowTimer?.Stop();
+                    _lastFloatingBarScreenDeviceName = null;
+                    return;
+                }
+
+                if (currentMode == 1 || isDragDropInEffect || ViewboxFloatingBar.Visibility != Visibility.Visible)
+                {
+                    return;
+                }
+
+                var mouseScreen = Screen.FromPoint(System.Windows.Forms.Control.MousePosition);
+                var currentFloatingBarScreen = GetCurrentFloatingBarScreen();
+
+                if (mouseScreen == null || currentFloatingBarScreen == null)
+                {
+                    return;
+                }
+
+                if (mouseScreen.DeviceName == currentFloatingBarScreen.DeviceName)
+                {
+                    _lastFloatingBarScreenDeviceName = currentFloatingBarScreen.DeviceName;
+                    return;
+                }
+
+                if (mouseScreen.DeviceName == _lastFloatingBarScreenDeviceName)
+                {
+                    return;
+                }
+
+                _lastFloatingBarScreenDeviceName = mouseScreen.DeviceName;
+                RebuildCanvasOnTargetScreen(mouseScreen);
+
+                if (BtnPPTSlideShowEnd.Visibility == Visibility.Visible)
+                {
+                    PureViewboxFloatingBarMarginAnimationInPPTMode();
+                }
+                else
+                {
+                    PureViewboxFloatingBarMarginAnimationInDesktopMode();
+                }
+            }
+            catch (Exception ex)
+            {
+                LogHelper.WriteLogToFile($"浮动栏跨屏跟随失败: {ex.Message}", LogHelper.LogType.Warning);
+            }
+        }
+
+        private void RebuildCanvasOnTargetScreen(Screen targetScreen)
+        {
+            try
+            {
+                if (targetScreen == null || _isRebuildingCanvasForScreen)
+                {
+                    return;
+                }
+
+                if (_lastCanvasScreenDeviceName == targetScreen.DeviceName)
+                {
+                    return;
+                }
+
+                _isRebuildingCanvasForScreen = true;
+
+                double dpiScaleX = 1, dpiScaleY = 1;
+                var source = PresentationSource.FromVisual(this);
+                if (source?.CompositionTarget != null)
+                {
+                    dpiScaleX = source.CompositionTarget.TransformToDevice.M11;
+                    dpiScaleY = source.CompositionTarget.TransformToDevice.M22;
+                }
+
+                // 先移动主窗口到目标屏，确保画布承载区域切换到新屏幕。
+                MainWindow.MoveWindow(
+                    new WindowInteropHelper(this).Handle,
+                    targetScreen.Bounds.X,
+                    targetScreen.Bounds.Y,
+                    targetScreen.Bounds.Width,
+                    targetScreen.Bounds.Height,
+                    true);
+
+                // 重新铺设画布尺寸，强制触发布局刷新。
+                inkCanvas.Width = targetScreen.Bounds.Width / dpiScaleX;
+                inkCanvas.Height = targetScreen.Bounds.Height / dpiScaleY;
+                inkCanvas.InvalidateMeasure();
+                inkCanvas.InvalidateArrange();
+                inkCanvas.UpdateLayout();
+
+                if (GridInkCanvasSelectionCover != null)
+                {
+                    GridInkCanvasSelectionCover.Width = inkCanvas.Width;
+                    GridInkCanvasSelectionCover.Height = inkCanvas.Height;
+                    GridInkCanvasSelectionCover.InvalidateMeasure();
+                    GridInkCanvasSelectionCover.InvalidateArrange();
+                }
+
+                _lastCanvasScreenDeviceName = targetScreen.DeviceName;
+            }
+            catch (Exception ex)
+            {
+                LogHelper.WriteLogToFile($"在新屏重建画布失败: {ex.Message}", LogHelper.LogType.Warning);
+            }
+            finally
+            {
+                _isRebuildingCanvasForScreen = false;
+            }
+        }
+
         /// <summary>
         /// 光标图标点击事件处理
         /// </summary>

Ink Canvas/MainWindow_cs/MW_Settings.cs

@@ -823,6 +823,8 @@ namespace Ink_Canvas
             Settings.Advanced.IsEnableForceFullScreen = false;
             Settings.Advanced.IsEnableDPIChangeDetection = false;
             Settings.Advanced.IsEnableResolutionChangeDetection = false;
+            Settings.Advanced.EnableMultiScreenSupport = true;
+            Settings.Advanced.FollowMouseForScreenSelection = true;
 
             Settings.Appearance.IsEnableDisPlayNibModeToggler = false;
             Settings.Appearance.IsColorfulViewboxFloatingBar = false;

Ink Canvas/MainWindow_cs/MW_SettingsToLoad.cs

@@ -618,6 +618,8 @@ namespace Ink_Canvas
                 ViewboxFloatingBarMarginAnimation(100, true);
             }
 
+            RefreshFloatingBarScreenFollowState();
+
         }
 
         /// <summary>

Ink Canvas/Resources/Settings.cs

@@ -731,6 +731,12 @@ namespace Ink_Canvas
 
         [JsonProperty("windowMode")]
         public bool WindowMode { get; set; } = true;
+
+        [JsonProperty("enableMultiScreenSupport")]
+        public bool EnableMultiScreenSupport { get; set; } = true;
+
+        [JsonProperty("followMouseForScreenSelection")]
+        public bool FollowMouseForScreenSelection { get; set; } = true;
     }
 
     public class InkToShape

Ink Canvas/Windows/SettingsViews/Pages/WindowPage.xaml

@@ -57,6 +57,21 @@
                             SwitchName="ToggleSwitchAvoidFullScreen"
                             Toggled="ToggleSwitchAvoidFullScreen_Toggled" />
 
+                    <controls:LabeledSettingsCard x:Name="CardMultiScreenSupport"
+                            Header="多屏支持"
+                            Description="启用后将根据当前显示器环境启用多屏逻辑"
+                            Icon="{x:Static ui:SegoeFluentIcons.BackToWindow}"
+                            SwitchName="ToggleSwitchMultiScreenSupport"
+                            Toggled="ToggleSwitchMultiScreenSupport_Toggled" />
+
+                    <controls:LabeledSettingsCard x:Name="CardFollowMouseScreen"
+                            Header="自动跟随鼠标选择显示屏"
+                            Description="默认开启：自动以鼠标所在显示屏作为当前目标显示屏"
+                            Icon="{x:Static ui:SegoeFluentIcons.TouchPointer}"
+                            Visibility="{Binding IsOn, ElementName=CardMultiScreenSupport, Converter={StaticResource BooleanToVisibilityConverter}}"
+                            SwitchName="ToggleSwitchFollowMouseScreen"
+                            Toggled="ToggleSwitchFollowMouseScreen_Toggled" />
+
                     <ui:SettingsExpander x:Name="ExpanderAlwaysOnTop"
                             Header="{i18n:I18n Key=Startup_TopMost}"
                             Description="{i18n:I18n Key=Startup_TopMostHint}"

Ink Canvas/Windows/SettingsViews/Pages/WindowPage.xaml.cs

@@ -42,6 +42,8 @@ namespace Ink_Canvas.Windows.SettingsViews.Pages
                     CardNoFocusMode.IsOn = settings.Advanced.IsNoFocusMode;
                     CardWindowMode.IsOn = settings.Advanced.WindowMode;
                     CardAvoidFullScreen.IsOn = settings.Advanced.IsEnableAvoidFullScreenHelper;
+                    CardMultiScreenSupport.IsOn = settings.Advanced.EnableMultiScreenSupport;
+                    CardFollowMouseScreen.IsOn = settings.Advanced.FollowMouseForScreenSelection;
                     ToggleSwitchAlwaysOnTop.IsOn = settings.Advanced.IsAlwaysOnTop;
 
                     _topMostModeItems.Clear();
@@ -215,6 +217,48 @@ namespace Ink_Canvas.Windows.SettingsViews.Pages
             }
         }
 
+        private void ToggleSwitchMultiScreenSupport_Toggled(object sender, RoutedEventArgs e)
+        {
+            if (!_isLoaded) return;
+
+            try
+            {
+                bool newState = CardMultiScreenSupport.IsOn;
+                SettingsManager.Settings.Advanced.EnableMultiScreenSupport = newState;
+                SettingsManager.SaveSettingsToFile();
+
+                if (Application.Current.MainWindow is MainWindow mainWindow)
+                {
+                    mainWindow.ApplyMultiScreenSettings();
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"设置多屏支持时出错: {ex.Message}");
+            }
+        }
+
+        private void ToggleSwitchFollowMouseScreen_Toggled(object sender, RoutedEventArgs e)
+        {
+            if (!_isLoaded) return;
+
+            try
+            {
+                bool newState = CardFollowMouseScreen.IsOn;
+                SettingsManager.Settings.Advanced.FollowMouseForScreenSelection = newState;
+                SettingsManager.SaveSettingsToFile();
+
+                if (Application.Current.MainWindow is MainWindow mainWindow)
+                {
+                    mainWindow.ApplyMultiScreenSettings();
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"设置自动跟随鼠标选择显示屏时出错: {ex.Message}");
+            }
+        }
+
         private void RadioTopMostNormal_Checked(object sender, RoutedEventArgs e)
         {
             if (!_isLoaded) return;