community/Ink Canvas/MainWindow.xaml.cs

using Ink_Canvas.Helpers;
using Ink_Canvas.Helpers.Plugins;
using Ink_Canvas.Windows;
using iNKORE.UI.WPF.Modern;
using iNKORE.UI.WPF.Modern.Controls;
using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Security.Principal;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Forms;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Interop;
using System.Windows.Media;
using System.Windows.Threading;
using Application = System.Windows.Application;
using Brushes = System.Windows.Media.Brushes;
using Button = System.Windows.Controls.Button;
using Cursor = System.Windows.Input.Cursor;
using Cursors = System.Windows.Input.Cursors;
using DpiChangedEventArgs = System.Windows.DpiChangedEventArgs;
using File = System.IO.File;
using GroupBox = System.Windows.Controls.GroupBox;
using HorizontalAlignment = System.Windows.HorizontalAlignment;
using MessageBox = iNKORE.UI.WPF.Modern.Controls.MessageBox;
using Point = System.Windows.Point;
using VerticalAlignment = System.Windows.VerticalAlignment;

namespace Ink_Canvas
{
    public partial class MainWindow : Window
    {
        [DllImport("UIAccessDLL_x86.dll", EntryPoint = "PrepareUIAccess", CallingConvention = CallingConvention.Cdecl)]
        public static extern Int32 PrepareUIAccessX86();

        [DllImport("UIAccessDLL_x64.dll", EntryPoint = "PrepareUIAccess", CallingConvention = CallingConvention.Cdecl)]
        public static extern Int32 PrepareUIAccessX64();

        // 每一页一个Canvas对象
        private List<System.Windows.Controls.Canvas> whiteboardPages = new List<System.Windows.Controls.Canvas>();
        private int currentPageIndex;
        private System.Windows.Controls.Canvas currentCanvas;
        private AutoUpdateHelper.UpdateLineGroup AvailableLatestLineGroup;

        // 全局快捷键管理器
        private GlobalHotkeyManager _globalHotkeyManager;

        // 墨迹渐隐管理器
        private InkFadeManager _inkFadeManager;

        // 悬浮窗拦截管理器
        private FloatingWindowInterceptorManager _floatingWindowInterceptorManager;

        // 窗口概览模型
        private WindowOverviewModel _windowOverviewModel;

        // 设置面板相关状态
        private bool isTemporarilyDisablingNoFocusMode = false;

        // 全屏处理状态标志
        public bool isFullScreenApplied = false;

        private static Cursor _cachedPenCursor = null;
        private static readonly object _cursorLock = new object();

        #region Window Initialization

        public MainWindow()
        {
            /*
                处于画板模式内：Topmost == false / currentMode != 0
                处于 PPT 放映内：BtnPPTSlideShowEnd.Visibility
            */
            InitializeComponent();

            BlackboardLeftSide.Visibility = Visibility.Collapsed;
            BlackboardCenterSide.Visibility = Visibility.Collapsed;
            BlackboardRightSide.Visibility = Visibility.Collapsed;
            BorderTools.Visibility = Visibility.Collapsed;
            BorderSettings.Visibility = Visibility.Collapsed;
            LeftSidePanelForPPTNavigation.Visibility = Visibility.Collapsed;
            RightSidePanelForPPTNavigation.Visibility = Visibility.Collapsed;
            BorderSettings.Margin = new Thickness(0, 0, 0, 0);
            TwoFingerGestureBorder.Visibility = Visibility.Collapsed;
            BoardTwoFingerGestureBorder.Visibility = Visibility.Collapsed;
            BorderDrawShape.Visibility = Visibility.Collapsed;
            BoardBorderDrawShape.Visibility = Visibility.Collapsed;
            GridInkCanvasSelectionCover.Visibility = Visibility.Collapsed;

            //if (!App.StartArgs.Contains("-o"))

            ViewBoxStackPanelMain.Visibility = Visibility.Collapsed;
            ViewBoxStackPanelShapes.Visibility = Visibility.Collapsed;
            var workingArea = Screen.PrimaryScreen.WorkingArea;
            // 考虑快捷调色盘的宽度，确保浮动栏有足够空间
            double floatingBarWidth = 284; // 基础宽度
            if (Settings.Appearance.IsShowQuickColorPalette)
            {
                // 根据显示模式调整宽度
                if (Settings.Appearance.QuickColorPaletteDisplayMode == 0)
                {
                    // 单行显示模式，自适应宽度，但需要足够空间显示6个颜色
                    floatingBarWidth = Math.Max(floatingBarWidth, 120);
                }
                else
                {
                    // 双行显示模式，宽度较大
                    floatingBarWidth = Math.Max(floatingBarWidth, 820);
                }
            }
            ViewboxFloatingBar.Margin = new Thickness(
                (workingArea.Width - floatingBarWidth) / 2,
                workingArea.Bottom - 60 - workingArea.Top,
                -2000, -200);
            // 新增：只在屏幕模式下初始化浮动栏动画
            if (currentMode == 0)
            {
                ViewboxFloatingBarMarginAnimation(100, true);
            }

            try
            {
                if (File.Exists("debug.ini")) Label.Visibility = Visibility.Visible;
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile(ex.ToString(), LogHelper.LogType.Error);
            }

            try
            {
                if (File.Exists("Log.txt"))
                {
                    var fileInfo = new FileInfo("Log.txt");
                    var fileSizeInKB = fileInfo.Length / 1024;
                    if (fileSizeInKB > 512)
                        try
                        {
                            File.Delete("Log.txt");
                            LogHelper.WriteLogToFile(
                                "The Log.txt file has been successfully deleted. Original file size: " + fileSizeInKB +
                                " KB");
                        }
                        catch (Exception ex)
                        {
                            LogHelper.WriteLogToFile(
                                ex + " | Can not delete the Log.txt file. File size: " + fileSizeInKB + " KB",
                                LogHelper.LogType.Error);
                        }
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile(ex.ToString(), LogHelper.LogType.Error);
            }

            InitTimers();
            timeMachine.OnRedoStateChanged += TimeMachine_OnRedoStateChanged;
            timeMachine.OnUndoStateChanged += TimeMachine_OnUndoStateChanged;
            inkCanvas.Strokes.StrokesChanged += StrokesOnStrokesChanged;

            SystemEvents.UserPreferenceChanged += SystemEvents_UserPreferenceChanged;
            try
            {
                if (File.Exists("SpecialVersion.ini")) SpecialVersionResetToSuggestion_Click();
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile(ex.ToString(), LogHelper.LogType.Error);
            }

            CheckColorTheme(true);
            CheckPenTypeUIState();

            // 初始化墨迹平滑管理器
            _inkSmoothingManager = new InkSmoothingManager(Dispatcher);

            // 初始化墨迹渐隐管理器
            _inkFadeManager = new InkFadeManager(this);

            // 注册输入事件
            inkCanvas.PreviewMouseDown += inkCanvas_PreviewMouseDown;
            inkCanvas.StylusDown += inkCanvas_StylusDown;
            inkCanvas.MouseRightButtonUp += InkCanvas_MouseRightButtonUp;

            // 初始化第一页Canvas
            var firstCanvas = new System.Windows.Controls.Canvas();
            whiteboardPages.Add(firstCanvas);
            InkCanvasGridForInkReplay.Children.Add(firstCanvas);
            currentPageIndex = 0;
            ShowPage(currentPageIndex);

            // 手动实现触摸滑动
            const double TouchTapMovementThreshold = 15.0; 
            double leftTouchStartY = 0;
            double leftTouchStartX = 0;
            double leftScrollStartOffset = 0;
            bool leftIsTouching = false;
            bool leftTouchDidScroll = false;
            BlackBoardLeftSidePageListScrollViewer.TouchDown += (s, e) =>
            {
                leftIsTouching = true;
                leftTouchDidScroll = false;
                var pt = e.GetTouchPoint(BlackBoardLeftSidePageListScrollViewer).Position;
                leftTouchStartX = pt.X;
                leftTouchStartY = pt.Y;
                leftScrollStartOffset = BlackBoardLeftSidePageListScrollViewer.VerticalOffset;
                BlackBoardLeftSidePageListScrollViewer.CaptureTouch(e.TouchDevice);
                e.Handled = true;
            };
            BlackBoardLeftSidePageListScrollViewer.TouchMove += (s, e) =>
            {
                if (leftIsTouching)
                {
                    var pt = e.GetTouchPoint(BlackBoardLeftSidePageListScrollViewer).Position;
                    double deltaY = leftTouchStartY - pt.Y;
                    double deltaX = pt.X - leftTouchStartX;
                    if (!leftTouchDidScroll && (Math.Abs(deltaY) > TouchTapMovementThreshold || Math.Abs(deltaX) > TouchTapMovementThreshold))
                        leftTouchDidScroll = true;
                    if (leftTouchDidScroll)
                        BlackBoardLeftSidePageListScrollViewer.ScrollToVerticalOffset(leftScrollStartOffset + deltaY);
                    e.Handled = true;
                }
            };
            BlackBoardLeftSidePageListScrollViewer.TouchUp += (s, e) =>
            {
                if (leftIsTouching && !leftTouchDidScroll)
                {
                    var pt = e.GetTouchPoint(BlackBoardLeftSidePageListScrollViewer).Position;
                    double dx = pt.X - leftTouchStartX, dy = pt.Y - leftTouchStartY;
                    if (dx * dx + dy * dy <= TouchTapMovementThreshold * TouchTapMovementThreshold)
                        TrySwitchWhiteboardPageByTouchPoint(BlackBoardLeftSidePageListView, BlackBoardLeftSidePageListScrollViewer, pt);
                }
                leftIsTouching = false;
                leftTouchDidScroll = false;
                BlackBoardLeftSidePageListScrollViewer.ReleaseTouchCapture(e.TouchDevice);
                e.Handled = true;
            };
            double rightTouchStartY = 0;
            double rightTouchStartX = 0;
            double rightScrollStartOffset = 0;
            bool rightIsTouching = false;
            bool rightTouchDidScroll = false;
            BlackBoardRightSidePageListScrollViewer.TouchDown += (s, e) =>
            {
                rightIsTouching = true;
                rightTouchDidScroll = false;
                var pt = e.GetTouchPoint(BlackBoardRightSidePageListScrollViewer).Position;
                rightTouchStartX = pt.X;
                rightTouchStartY = pt.Y;
                rightScrollStartOffset = BlackBoardRightSidePageListScrollViewer.VerticalOffset;
                BlackBoardRightSidePageListScrollViewer.CaptureTouch(e.TouchDevice);
                e.Handled = true;
            };
            BlackBoardRightSidePageListScrollViewer.TouchMove += (s, e) =>
            {
                if (rightIsTouching)
                {
                    var pt = e.GetTouchPoint(BlackBoardRightSidePageListScrollViewer).Position;
                    double deltaY = rightTouchStartY - pt.Y;
                    double deltaX = pt.X - rightTouchStartX;
                    if (!rightTouchDidScroll && (Math.Abs(deltaY) > TouchTapMovementThreshold || Math.Abs(deltaX) > TouchTapMovementThreshold))
                        rightTouchDidScroll = true;
                    if (rightTouchDidScroll)
                        BlackBoardRightSidePageListScrollViewer.ScrollToVerticalOffset(rightScrollStartOffset + deltaY);
                    e.Handled = true;
                }
            };
            BlackBoardRightSidePageListScrollViewer.TouchUp += (s, e) =>
            {
                if (rightIsTouching && !rightTouchDidScroll)
                {
                    var pt = e.GetTouchPoint(BlackBoardRightSidePageListScrollViewer).Position;
                    double dx = pt.X - rightTouchStartX, dy = pt.Y - rightTouchStartY;
                    if (dx * dx + dy * dy <= TouchTapMovementThreshold * TouchTapMovementThreshold)
                        TrySwitchWhiteboardPageByTouchPoint(BlackBoardRightSidePageListView, BlackBoardRightSidePageListScrollViewer, pt);
                }
                rightIsTouching = false;
                rightTouchDidScroll = false;
                BlackBoardRightSidePageListScrollViewer.ReleaseTouchCapture(e.TouchDevice);
                e.Handled = true;
            };
            // 初始化无焦点模式开关
            ToggleSwitchNoFocusMode.IsOn = Settings.Advanced.IsNoFocusMode;
            ApplyNoFocusMode();
            // 初始化窗口置顶开关
            ToggleSwitchAlwaysOnTop.IsOn = Settings.Advanced.IsAlwaysOnTop;
            ApplyAlwaysOnTop();

            // 添加窗口激活事件处理，确保置顶状态在窗口重新激活时得到保持
            Activated += Window_Activated;
            Deactivated += Window_Deactivated;

            // 为滑块控件添加触摸事件支持
            AddTouchSupportToSliders();

            // 初始化计时器控件事件
            Dispatcher.BeginInvoke(new Action(() =>
            {
                if (TimerControl != null)
                {
                    TimerControl.ShowMinimizedRequested += TimerControl_ShowMinimizedRequested;
                    TimerControl.HideMinimizedRequested += TimerControl_HideMinimizedRequested;
                }

                if (MinimizedTimerControl != null && TimerControl != null)
                {
                    MinimizedTimerControl.SetParentControl(TimerControl);
                }
                CheckAndShowOobe();
            }), DispatcherPriority.Loaded);
        }

        private void CheckAndShowOobe()
        {
            try
            {
                if (Settings?.Startup?.HasShownOobe == false)
                {
                    var oobeTimer = new DispatcherTimer(DispatcherPriority.Loaded, Dispatcher)
                    {
                        Interval = TimeSpan.FromMilliseconds(500)
                    };
                    oobeTimer.Tick += (s, e) =>
                    {
                        oobeTimer.Stop();
                        oobeTimer = null;
                        try
                        {
                            if (ViewboxFloatingBar != null)
                            {
                                ViewboxFloatingBar.Visibility = Visibility.Collapsed;
                            }

                            var oobeWindow = new OobeWindow(Settings);
                            oobeWindow.Owner = this;
                            oobeWindow.ShowDialog();

                            OnOobeCompleted();
                        }
                        catch (Exception ex)
                        {
                            LogHelper.WriteLogToFile($"显示 OOBE 时出错: {ex.Message}", LogHelper.LogType.Error);
                            if (ViewboxFloatingBar != null)
                            {
                                ViewboxFloatingBar.Visibility = Visibility.Visible;
                            }
                        }
                    };
                    oobeTimer.Start();
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"检查 OOBE 时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        private void OnOobeCompleted()
        {
            try
            {
                if (Settings?.Startup != null)
                {
                    Settings.Startup.HasShownOobe = true;
                    SaveSettingsToFile();
                }

                if (ViewboxFloatingBar != null && currentMode == 0)
                {
                    ViewboxFloatingBar.Visibility = Visibility.Visible;
                    ViewboxFloatingBarMarginAnimation(100, true);
                }

                LogHelper.WriteLogToFile("OOBE 已完成", LogHelper.LogType.Event);
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"完成 OOBE 时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        private void TimerControl_ShowMinimizedRequested(object sender, EventArgs e)
        {
            var timerContainer = FindName("TimerContainer") as FrameworkElement;
            var minimizedContainer = FindName("MinimizedTimerContainer") as FrameworkElement;

            if (timerContainer != null && minimizedContainer != null)
            {
                double x = 0, y = 0;

                if (timerContainer.HorizontalAlignment == HorizontalAlignment.Center &&
                    timerContainer.VerticalAlignment == VerticalAlignment.Center)
                {
                    var timerPoint = timerContainer.TransformToAncestor(this).Transform(new Point(0, 0));
                    x = timerPoint.X;
                    y = timerPoint.Y;
                }
                else
                {
                    var timerMargin = timerContainer.Margin;
                    x = double.IsNaN(timerMargin.Left) ? 0 : timerMargin.Left;
                    y = double.IsNaN(timerMargin.Top) ? 0 : timerMargin.Top;
                }

                minimizedContainer.Margin = new Thickness(x, y, 0, 0);
                minimizedContainer.HorizontalAlignment = HorizontalAlignment.Left;
                minimizedContainer.VerticalAlignment = VerticalAlignment.Top;

                timerContainer.Margin = new Thickness(x, y, 0, 0);
                timerContainer.HorizontalAlignment = HorizontalAlignment.Left;
                timerContainer.VerticalAlignment = VerticalAlignment.Top;

                timerContainer.Visibility = Visibility.Collapsed;
                minimizedContainer.Visibility = Visibility.Visible;
            }
        }

        private void TimerControl_HideMinimizedRequested(object sender, EventArgs e)
        {
            var timerContainer = FindName("TimerContainer") as FrameworkElement;
            var minimizedContainer = FindName("MinimizedTimerContainer") as FrameworkElement;

            if (timerContainer != null && minimizedContainer != null)
            {
                minimizedContainer.Visibility = Visibility.Collapsed;
                timerContainer.Visibility = Visibility.Visible;

                if (TimerControl != null)
                {
                    TimerControl.UpdateActivityTime();
                }
            }
        }

        /// <summary>
        /// 根据DPI缩放因子调整TimerContainer的尺寸
        /// </summary>
        public void AdjustTimerContainerSize()
        {
            try
            {
                var timerContainer = FindName("TimerContainer") as FrameworkElement;
                if (timerContainer == null) return;

                var source = System.Windows.PresentationSource.FromVisual(this);
                if (source != null)
                {
                    var dpiScaleX = source.CompositionTarget.TransformToDevice.M11;
                    var dpiScaleY = source.CompositionTarget.TransformToDevice.M22;

                    // 如果DPI缩放因子大于1.25，则适当缩小容器尺寸
                    // 这样可以确保在高DPI屏幕上，计时器窗口的物理像素大小不会过大
                    if (dpiScaleX > 1.25 || dpiScaleY > 1.25)
                    {
                        // 使用较小的缩放因子来限制最大尺寸
                        double scaleFactor = Math.Min(dpiScaleX, dpiScaleY);

                        // 计算目标物理像素大小（约1350x750物理像素）
                        // 然后转换为逻辑像素
                        double targetPhysicalWidth = 1350;
                        double targetPhysicalHeight = 750;

                        // 转换为逻辑像素
                        double maxWidth = targetPhysicalWidth / scaleFactor;
                        double maxHeight = targetPhysicalHeight / scaleFactor;

                        // 确保不会小于原始尺寸的70%
                        maxWidth = Math.Max(maxWidth, 900 * 0.7);
                        maxHeight = Math.Max(maxHeight, 500 * 0.7);

                        // 应用调整后的尺寸
                        timerContainer.Width = maxWidth;
                        timerContainer.Height = maxHeight;
                    }
                    else
                    {
                        // 标准DPI，使用原始尺寸
                        timerContainer.Width = 900;
                        timerContainer.Height = 500;
                    }
                }
                else
                {
                    // 无法获取DPI信息，使用原始尺寸
                    timerContainer.Width = 900;
                    timerContainer.Height = 500;
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"调整TimerContainer尺寸失败: {ex.Message}", LogHelper.LogType.Error);
            }
        }



        #endregion

        #region Ink Canvas Functions

        private Color Ink_DefaultColor = Colors.Red;

        private DrawingAttributes drawingAttributes;
        private InkSmoothingManager _inkSmoothingManager;

        private DispatcherTimer _brushAutoRestoreTimer;

        private bool _isBoardBrushMode;
        private double _savedInkWidthBeforeBoardBrush = 5;

        private void loadPenCanvas()
        {
            try
            {
                //drawingAttributes = new DrawingAttributes();
                drawingAttributes = inkCanvas.DefaultDrawingAttributes;
                drawingAttributes.Color = Ink_DefaultColor;


                drawingAttributes.Height = 2.5;
                drawingAttributes.Width = 2.5;
                drawingAttributes.IsHighlighter = false;
                // 默认使用高级贝塞尔曲线平滑，如果未启用则使用原来的FitToCurve
                if (Settings.Canvas.UseAdvancedBezierSmoothing)
                {
                    drawingAttributes.FitToCurve = false;
                }
                else
                {
                    drawingAttributes.FitToCurve = Settings.Canvas.FitToCurve;
                }

                inkCanvas.Gesture += InkCanvas_Gesture;
            }
            catch { }
        }


        private static Color GetCanonicalPaletteColorFromHex(string hex, byte alpha)
        {
            if (string.IsNullOrWhiteSpace(hex)) return Color.FromArgb(alpha, 255, 0, 0);

            string n = hex.Trim().ToLowerInvariant();
            if (n.StartsWith("#")) n = n.Substring(1);
            if (n.Length == 8) n = n.Substring(2, 6); // 去掉 AA
            else if (n.Length != 6) n = "";

            if (n.Length == 6)
            {
                if (n == "ffffff") return Color.FromArgb(alpha, 255, 255, 255);
                if (n == "fb9650") return Color.FromArgb(alpha, 251, 150, 80);   // 251,150,80 橙
                if (n == "ffff00") return Color.FromArgb(alpha, 255, 255, 0);
                if (n == "000000") return Color.FromArgb(alpha, 0, 0, 0);
                if (n == "2563eb") return Color.FromArgb(alpha, 37, 99, 235);    // 37,99,235 蓝
                if (n == "ff0000") return Color.FromArgb(alpha, 255, 0, 0);
                if (n == "16a34a") return Color.FromArgb(alpha, 22, 163, 74);    // 22,163,74 绿
                if (n == "9333ea") return Color.FromArgb(alpha, 147, 51, 234);    // 147,51,234 紫
            }

            try
            {
                var converted = ColorConverter.ConvertFromString(hex);
                if (converted is Color parsed)
                {
                    byte r = parsed.R, g = parsed.G, b = parsed.B;
                    if (r == 255 && g == 255 && b == 255) return Color.FromArgb(alpha, 255, 255, 255);
                    if (r == 251 && g == 150 && b == 80) return Color.FromArgb(alpha, 251, 150, 80);
                    if (r == 255 && g == 255 && b == 0) return Color.FromArgb(alpha, 255, 255, 0);
                    if (r == 0 && g == 0 && b == 0) return Color.FromArgb(alpha, 0, 0, 0);
                    if (r == 37 && g == 99 && b == 235) return Color.FromArgb(alpha, 37, 99, 235);
                    if (r == 255 && g == 0 && b == 0) return Color.FromArgb(alpha, 255, 0, 0);
                    if (r == 22 && g == 163 && b == 74) return Color.FromArgb(alpha, 22, 163, 74);
                    if (r == 147 && g == 51 && b == 234) return Color.FromArgb(alpha, 147, 51, 234);
                    return Color.FromArgb(alpha, r, g, b);
                }
            }
            catch { }
            return Color.FromArgb(alpha, 255, 0, 0);
        }

        /// <param name="color">目标颜色</param>
        /// <param name="width">目标粗细</param>
        /// <param name="height">目标高度</param>
        private void SetBrushAttributesDirectly(Color color, double width, double height)
        {
            try
            {
                if (!Dispatcher.CheckAccess())
                {
                    Dispatcher.Invoke(() => SetBrushAttributesDirectly(color, width, height));
                    return;
                }

                if (drawingAttributes == null)
                {
                    drawingAttributes = inkCanvas.DefaultDrawingAttributes;
                }

                Color rgbColor = Color.FromRgb(color.R, color.G, color.B);
                if (currentMode == 0)
                {
                    if (rgbColor == Colors.White) lastDesktopInkColor = 5;
                    else if (rgbColor == Color.FromRgb(251, 150, 80)) lastDesktopInkColor = 8;
                    else if (rgbColor == Colors.Yellow) lastDesktopInkColor = 4;
                    else if (rgbColor == Colors.Black) lastDesktopInkColor = 0;
                    else if (rgbColor == Color.FromRgb(37, 99, 235)) lastDesktopInkColor = 3;
                    else if (rgbColor == Colors.Red) lastDesktopInkColor = 1;
                    else if (rgbColor == Colors.Green || rgbColor == Color.FromRgb(22, 163, 74)) lastDesktopInkColor = 2;
                    else if (rgbColor == Color.FromRgb(147, 51, 234)) lastDesktopInkColor = 6;
                }
                else
                {
                    if (rgbColor == Colors.White) lastBoardInkColor = 5;
                    else if (rgbColor == Color.FromRgb(251, 150, 80)) lastBoardInkColor = 8;
                    else if (rgbColor == Colors.Yellow) lastBoardInkColor = 4;
                    else if (rgbColor == Colors.Black) lastBoardInkColor = 0;
                    else if (rgbColor == Color.FromRgb(37, 99, 235)) lastBoardInkColor = 3;
                    else if (rgbColor == Colors.Red) lastBoardInkColor = 1;
                    else if (rgbColor == Colors.Green || rgbColor == Color.FromRgb(22, 163, 74)) lastBoardInkColor = 2;
                    else if (rgbColor == Color.FromRgb(147, 51, 234)) lastBoardInkColor = 6;
                }

                var colorWithAlpha = Color.FromArgb(color.A, color.R, color.G, color.B);
                drawingAttributes.Color = colorWithAlpha;
                inkCanvas.DefaultDrawingAttributes.Color = colorWithAlpha;

                CheckColorTheme();

                Ink_DefaultColor = inkCanvas.DefaultDrawingAttributes.Color;

                // 粗细与透明度
                if (penType != 1)
                {
                    drawingAttributes.Width = width;
                    drawingAttributes.Height = height;
                    inkCanvas.DefaultDrawingAttributes.Width = width;
                    inkCanvas.DefaultDrawingAttributes.Height = height;
                }

                if (Settings?.Canvas != null)
                {
                    Settings.Canvas.InkWidth = width;
                    Settings.Canvas.InkAlpha = (int)color.A;
                }

                if (InkWidthSlider != null) InkWidthSlider.Value = width * 2;
                if (InkAlphaSlider != null) InkAlphaSlider.Value = color.A;
                if (BoardInkWidthSlider != null) BoardInkWidthSlider.Value = width * 2;
                if (BoardInkAlphaSlider != null) BoardInkAlphaSlider.Value = color.A;

                if (penType != 1)
                {
                    drawingAttributes.Width = width;
                    drawingAttributes.Height = height;
                    inkCanvas.DefaultDrawingAttributes.Width = width;
                    inkCanvas.DefaultDrawingAttributes.Height = height;
                }

            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"SetBrushAttributesDirectly: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        private const double BoardBrushInkWidth = 16;
        private const double BoardBrushInkHeight = 50;

        private void BoardBrushModeButton_Click(object sender, RoutedEventArgs e)
        {
            _isBoardBrushMode = !_isBoardBrushMode;

            try
            {
                if (drawingAttributes == null)
                    drawingAttributes = inkCanvas.DefaultDrawingAttributes;

                if (penType == 1) return;

                if (_isBoardBrushMode)
                {
                    _savedInkWidthBeforeBoardBrush = InkWidthSlider != null ? InkWidthSlider.Value / 2.0 : drawingAttributes.Width;
                    if (_savedInkWidthBeforeBoardBrush < 0.5) _savedInkWidthBeforeBoardBrush = 2.5;

                    drawingAttributes.Width = BoardBrushInkWidth;
                    drawingAttributes.Height = BoardBrushInkHeight;
                    inkCanvas.DefaultDrawingAttributes.Width = BoardBrushInkWidth;
                    inkCanvas.DefaultDrawingAttributes.Height = BoardBrushInkHeight;
                    drawingAttributes.StylusTip = StylusTip.Rectangle;
                    inkCanvas.DefaultDrawingAttributes.StylusTip = StylusTip.Rectangle;
                    drawingAttributes.IgnorePressure = true;
                    inkCanvas.DefaultDrawingAttributes.IgnorePressure = true;

                    if (BoardBrushModeButton != null)
                        BoardBrushModeButton.Background = new SolidColorBrush(Color.FromRgb(37, 99, 235));
                }
                else
                {
                    double w = InkWidthSlider != null ? InkWidthSlider.Value / 2.0 : _savedInkWidthBeforeBoardBrush;
                    if (w < 0.5) w = 2.5;

                    drawingAttributes.Width = w;
                    drawingAttributes.Height = w;
                    inkCanvas.DefaultDrawingAttributes.Width = w;
                    inkCanvas.DefaultDrawingAttributes.Height = w;
                    drawingAttributes.StylusTip = StylusTip.Ellipse;
                    inkCanvas.DefaultDrawingAttributes.StylusTip = StylusTip.Ellipse;
                    drawingAttributes.IgnorePressure = Settings.Canvas.DisablePressure;
                    inkCanvas.DefaultDrawingAttributes.IgnorePressure = Settings.Canvas.DisablePressure;

                    if (BoardInkWidthSlider != null) BoardInkWidthSlider.Value = w * 2;
                    if (Settings?.Canvas != null) Settings.Canvas.InkWidth = w;

                    if (BoardBrushModeButton != null)
                        BoardBrushModeButton.ClearValue(BackgroundProperty);
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"BoardBrushModeButton_Click: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        private void BoardBrushModeButton_MouseUp(object sender, MouseButtonEventArgs e)
        {
            if (sender != BoardBrushModeButton) return;
            if (lastBorderMouseDownObject != BoardBrushModeButton) return;

            _isBoardBrushMode = !_isBoardBrushMode;

            try
            {
                if (drawingAttributes == null)
                    drawingAttributes = inkCanvas.DefaultDrawingAttributes;

                if (penType == 1) return; 

                if (_isBoardBrushMode)
                {
                    _savedInkWidthBeforeBoardBrush = InkWidthSlider != null ? InkWidthSlider.Value / 2.0 : drawingAttributes.Width;
                    if (_savedInkWidthBeforeBoardBrush < 0.5) _savedInkWidthBeforeBoardBrush = 2.5;

                    drawingAttributes.Width = BoardBrushInkWidth;
                    drawingAttributes.Height = BoardBrushInkHeight;
                    inkCanvas.DefaultDrawingAttributes.Width = BoardBrushInkWidth;
                    inkCanvas.DefaultDrawingAttributes.Height = BoardBrushInkHeight;
                    drawingAttributes.StylusTip = StylusTip.Rectangle;
                    inkCanvas.DefaultDrawingAttributes.StylusTip = StylusTip.Rectangle;
                    drawingAttributes.IgnorePressure = true;
                    inkCanvas.DefaultDrawingAttributes.IgnorePressure = true;

                    if (BoardBrushModeButton != null)
                        BoardBrushModeButton.Background = new SolidColorBrush(Color.FromRgb(37, 99, 235));
                }
                else
                {
                    double w = InkWidthSlider != null ? InkWidthSlider.Value / 2.0 : _savedInkWidthBeforeBoardBrush;
                    if (w < 0.5) w = 2.5;

                    drawingAttributes.Width = w;
                    drawingAttributes.Height = w;
                    inkCanvas.DefaultDrawingAttributes.Width = w;
                    inkCanvas.DefaultDrawingAttributes.Height = w;
                    drawingAttributes.StylusTip = StylusTip.Ellipse;
                    inkCanvas.DefaultDrawingAttributes.StylusTip = StylusTip.Ellipse;
                    drawingAttributes.IgnorePressure = Settings.Canvas.DisablePressure;
                    inkCanvas.DefaultDrawingAttributes.IgnorePressure = Settings.Canvas.DisablePressure;

                    if (BoardInkWidthSlider != null) BoardInkWidthSlider.Value = w * 2;
                    if (Settings?.Canvas != null) Settings.Canvas.InkWidth = w;

                    if (BoardBrushModeButton != null)
                        BoardBrushModeButton.ClearValue(BackgroundProperty);
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"BoardBrushModeButton_MouseUp: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        private void InitBrushAutoRestoreTimer()
        {
            if (_brushAutoRestoreTimer == null)
            {
                _brushAutoRestoreTimer = new DispatcherTimer();
                _brushAutoRestoreTimer.Tick += BrushAutoRestoreTimer_Tick;
            }

            UpdateBrushAutoRestoreTimerInterval();
        }

        private void UpdateBrushAutoRestoreTimerInterval()
        {
            if (_brushAutoRestoreTimer == null) return;

            TimeSpan? nextInterval = null;
            try
            {
                var timesConfig = Settings?.Canvas?.BrushAutoRestoreTimes;
                if (!string.IsNullOrWhiteSpace(timesConfig))
                {
                    var parts = timesConfig
                        .Split(new[] { ';', '；', ',', '，' }, StringSplitOptions.RemoveEmptyEntries)
                        .Select(p => p.Trim())
                        .ToList();

                    var validTimes = new List<TimeSpan>();
                    foreach (var part in parts)
                    {
                        if (TimeSpan.TryParse(part, out var ts) &&
                            ts >= TimeSpan.Zero &&
                            ts < TimeSpan.FromDays(1))
                        {
                            validTimes.Add(ts);
                        }
                    }

                    if (validTimes.Count > 0)
                    {
                        var now = DateTime.Now;
                        var today = now.Date;
                        var nowTod = now.TimeOfDay;

                        TimeSpan? todayNext = null;
                        foreach (var t in validTimes)
                        {
                            if (t >= nowTod)
                            {
                                if (todayNext == null || t < todayNext.Value)
                                {
                                    todayNext = t;
                                }
                            }
                        }

                        DateTime target;
                        if (todayNext.HasValue)
                        {
                            target = today + todayNext.Value;
                        }
                        else
                        {
                            var firstTime = validTimes.OrderBy(t => t).First();
                            target = today.AddDays(1) + firstTime;
                        }

                        var interval = target - now;
                        if (interval < TimeSpan.FromSeconds(1))
                        {
                            interval = TimeSpan.FromSeconds(1);
                        }
                        nextInterval = interval;
                    }
                }
            }
            catch { }

            if (!nextInterval.HasValue)
            {
                int seconds = Settings?.Canvas?.BrushAutoRestoreDelaySeconds ?? 0;
                if (seconds < 1) seconds = 1;
                nextInterval = TimeSpan.FromSeconds(seconds);
            }

            _brushAutoRestoreTimer.Interval = nextInterval.Value;
        }

        internal void ScheduleBrushAutoRestore()
        {
            try
            {
                if (Settings == null || Settings.Canvas == null || !Settings.Canvas.EnableBrushAutoRestore)
                {
                    return;
                }

                if (_brushAutoRestoreTimer == null)
                {
                    InitBrushAutoRestoreTimer();
                }
                else
                {
                    UpdateBrushAutoRestoreTimerInterval();
                }

                _brushAutoRestoreTimer.Stop();
                _brushAutoRestoreTimer.Start();
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"ScheduleBrushAutoRestore: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        private void BrushAutoRestoreTimer_Tick(object sender, EventArgs e)
        {
            try
            {
                _brushAutoRestoreTimer.Stop();

                if (Settings == null || Settings.Canvas == null || !Settings.Canvas.EnableBrushAutoRestore)
                {
                    return;
                }

                if (drawingAttributes == null)
                {
                    drawingAttributes = inkCanvas.DefaultDrawingAttributes;
                }

                int alphaConfig = Settings.Canvas.BrushAutoRestoreAlpha;
                if (alphaConfig < 0) alphaConfig = 0;
                if (alphaConfig > 255) alphaConfig = 255;
                byte alpha = (byte)alphaConfig;

                Color targetColor = GetCanonicalPaletteColorFromHex(Settings.Canvas.BrushAutoRestoreColor ?? "", alpha);

                double sliderValue = Settings.Canvas.BrushAutoRestoreWidth;
                double width;
                if (sliderValue <= 0)
                {
                    width = Settings.Canvas.InkWidth > 0 ? Settings.Canvas.InkWidth : 2.5;
                }
                else
                {
                    width = sliderValue / 2.0; 
                }

                SetBrushAttributesDirectly(targetColor, width, width);

                UpdateBrushAutoRestoreTimerInterval();
                _brushAutoRestoreTimer.Start();
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"BrushAutoRestoreTimer_Tick: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        //ApplicationGesture lastApplicationGesture = ApplicationGesture.AllGestures;
        private DateTime lastGestureTime = DateTime.Now;

        private void InkCanvas_Gesture(object sender, InkCanvasGestureEventArgs e)
        {
            var gestures = e.GetGestureRecognitionResults();
            try
            {
                foreach (var gest in gestures)
                    //Trace.WriteLine(string.Format("Gesture: {0}, Confidence: {1}", gest.ApplicationGesture, gest.RecognitionConfidence));
                    // 只有在PPT放映模式下才响应翻页手势
                    if (StackPanelPPTControls.Visibility == Visibility.Visible &&
                        BtnPPTSlideShowEnd.Visibility == Visibility.Visible &&
                        PPTManager?.IsInSlideShow == true)
                    {
                        if (gest.ApplicationGesture == ApplicationGesture.Left)
                        {
                            BtnPPTSlidesDown_Click(null, null); // 下一页
                        }
                        if (gest.ApplicationGesture == ApplicationGesture.Right)
                        {
                            BtnPPTSlidesUp_Click(null, null); // 上一页
                        }
                    }
            }
            catch { }
        }

        private void inkCanvas_EditingModeChanged(object sender, RoutedEventArgs e)
        {
            var inkCanvas1 = sender as InkCanvas;
            if (inkCanvas1 == null) return;

            // 使用辅助方法设置光标
            SetCursorBasedOnEditingMode(inkCanvas1);
            if (Settings.Canvas.IsShowCursor)
            {
                if (inkCanvas1.EditingMode == InkCanvasEditingMode.Ink ||
                    inkCanvas1.EditingMode == InkCanvasEditingMode.Select ||
                    drawingShapeMode != 0)
                    inkCanvas1.ForceCursor = true;
                else
                    inkCanvas1.ForceCursor = false;
            }
            else
            {
                // 套索选择模式下始终强制显示光标，即使用户设置不显示光标
                if (inkCanvas1.EditingMode == InkCanvasEditingMode.Select)
                {
                    inkCanvas1.ForceCursor = true;
                }
                else
                {
                    inkCanvas1.ForceCursor = false;
                }
            }

            if (inkCanvas1.EditingMode == InkCanvasEditingMode.Ink) forcePointEraser = !forcePointEraser;

            // 处理橡皮擦覆盖层的启用/禁用
            var eraserOverlay = FindName("EraserOverlayCanvas") as Canvas;
            if (eraserOverlay != null)
            {
                if (inkCanvas1.EditingMode == InkCanvasEditingMode.EraseByPoint)
                {
                    // 橡皮擦模式下启用覆盖层
                    EnableEraserOverlay();
                    Trace.WriteLine("Eraser: Overlay enabled in eraser mode");
                }
                else
                {
                    // 其他模式下禁用覆盖层
                    DisableEraserOverlay();
                    Trace.WriteLine("Eraser: Overlay disabled in non-eraser mode");
                }
            }
        }

        #endregion Ink Canvas

        #region Definations and Loading

        public static Settings Settings = new Settings();
        public static string settingsFileName = Path.Combine("Configs", "Settings.json");
        private bool isLoaded;
        private bool forcePointEraser;

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            loadPenCanvas();
            //加载设置
            LoadSettings(true);
            AutoBackupManager.Initialize(Settings);
            CheckUpdateChannelAndTelemetryConsistency();

            // 初始化Dlass上传队列（恢复上次的上传队列）
            DlassNoteUploader.InitializeQueue();

            _ = TelemetryUploader.UploadTelemetryIfNeededAsync();

            // 检查保存路径是否可用，不可用则修正
            try
            {
                string savePath = Settings.Automation.AutoSavedStrokesLocation;
                bool needFix = false;
                if (string.IsNullOrWhiteSpace(savePath) || !Directory.Exists(savePath))
                {
                    needFix = true;
                }
                else
                {
                    // 检查是否可写
                    try
                    {
                        string testFile = Path.Combine(savePath, "test.tmp");
                        File.WriteAllText(testFile, "test");
                        File.Delete(testFile);
                    }
                    catch
                    {
                        needFix = true;
                    }
                }
                if (needFix)
                {
                    string newPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Saves");
                    Settings.Automation.AutoSavedStrokesLocation = newPath;
                    if (!Directory.Exists(newPath))
                        Directory.CreateDirectory(newPath);
                    SaveSettingsToFile();
                    LogHelper.WriteLogToFile($"自动修正保存路径为: {newPath}");
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"检测或修正保存路径时出错: {ex.Message}", LogHelper.LogType.Error);
            }

            // 加载自定义背景颜色
            LoadCustomBackgroundColor();

            // 设置窗口模式
            SetWindowMode();

            // 注册设置面板滚动事件
            if (SettingsPanelScrollViewer != null)
            {
                SettingsPanelScrollViewer.ScrollChanged += SettingsPanelScrollViewer_ScrollChanged;
            }

            // 初始化PPT管理器
            InitializePPTManagers();

            // 如果启用PPT支持，开始监控
            if (Settings.PowerPointSettings.PowerPointSupport)
            {
                StartPPTMonitoring();
            }

            // 初始化窗口概览模型
            try
            {
                _windowOverviewModel = new WindowOverviewModel();
                LogHelper.WriteLogToFile("窗口概览模型已初始化", LogHelper.LogType.Event);
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"初始化窗口概览模型失败: {ex.Message}", LogHelper.LogType.Error);
            }

            // 如果启用PowerPoint联动增强功能，启动进程守护
            if (Settings.PowerPointSettings.EnablePowerPointEnhancement)
            {
                StartPowerPointProcessMonitoring();
            }

            // HasNewUpdateWindow hasNewUpdateWindow = new HasNewUpdateWindow();
            if (Environment.Is64BitProcess) GroupBoxInkRecognition.Visibility = Visibility.Collapsed;

            // 根据设置应用主题
            switch (Settings.Appearance.Theme)
            {
                case 0: // 浅色主题
                    ThemeManager.Current.ApplicationTheme = ApplicationTheme.Light;
                    SetTheme("Light");
                    break;
                case 1: // 深色主题
                    ThemeManager.Current.ApplicationTheme = ApplicationTheme.Dark;
                    SetTheme("Dark");
                    break;
                case 2: // 跟随系统
                    if (IsSystemThemeLight())
                    {
                        ThemeManager.Current.ApplicationTheme = ApplicationTheme.Light;
                        SetTheme("Light");
                    }
                    else
                    {
                        ThemeManager.Current.ApplicationTheme = ApplicationTheme.Dark;
                        SetTheme("Dark");
                    }
                    break;
            }

            //TextBlockVersion.Text = Assembly.GetExecutingAssembly().GetName().Version.ToString();
            LogHelper.WriteLogToFile("Ink Canvas Loaded", LogHelper.LogType.Event);

            isLoaded = true;
            BlackBoardLeftSidePageListView.ItemsSource = blackBoardSidePageListViewObservableCollection;
            BlackBoardRightSidePageListView.ItemsSource = blackBoardSidePageListViewObservableCollection;

            BtnLeftWhiteBoardSwitchPreviousGeometry.Brush =
                new SolidColorBrush(Color.FromArgb(127, 24, 24, 27));
            BtnLeftWhiteBoardSwitchPreviousLabel.Opacity = 0.5;
            BtnRightWhiteBoardSwitchPreviousGeometry.Brush =
                new SolidColorBrush(Color.FromArgb(127, 24, 24, 27));
            BtnRightWhiteBoardSwitchPreviousLabel.Opacity = 0.5;

            // 应用颜色主题，这将考虑自定义背景色
            CheckColorTheme(true);

            BtnWhiteBoardSwitchPrevious.IsEnabled = CurrentWhiteboardIndex != 1;
            BorderInkReplayToolBox.Visibility = Visibility.Collapsed;

            // 提前加载IA库，优化第一笔等待时间
            if (Settings.InkToShape.IsInkToShapeEnabled && !Environment.Is64BitProcess)
            {
                var strokeEmpty = new StrokeCollection();
                InkRecognizeHelper.RecognizeShape(strokeEmpty);
            }

            SystemEvents.DisplaySettingsChanged += SystemEventsOnDisplaySettingsChanged;
            // 自动收纳到侧边栏（若通过 --board 进入白板模式或 --show 参数则跳过收纳）
            if (Settings.Startup.IsFoldAtStartup && !App.StartWithBoardMode && !App.StartWithShowMode)
            {
                FoldFloatingBar_MouseUp(new object(), null);
            }

            // 恢复崩溃后操作设置
            if (App.CrashAction == App.CrashActionType.SilentRestart)
                RadioCrashSilentRestart.IsChecked = true;
            else
                RadioCrashNoAction.IsChecked = true;

            // 显示快抽悬浮按钮
            ShowQuickDrawFloatingButton();

            // 如果当前不是黑板模式，则切换到黑板模式
            if (currentMode == 0)
            {
                // 延迟执行，确保UI已完全加载
                Dispatcher.BeginInvoke(new Action(() =>
                {
                    // 重新加载自定义背景颜色
                    LoadCustomBackgroundColor();

                    // 模拟点击切换按钮进入黑板模式
                    if (GridTransparencyFakeBackground.Background != Brushes.Transparent)
                    {
                        BtnSwitch_Click(BtnSwitch, null);
                    }

                    // 确保背景颜色正确设置为黑板颜色
                    CheckColorTheme(true);
                }), DispatcherPriority.Loaded);
            }

            // 初始化插件系统
            InitializePluginSystem();
            // 确保开关和设置同步
            ToggleSwitchNoFocusMode.IsOn = Settings.Advanced.IsNoFocusMode;
            ApplyNoFocusMode();
            ToggleSwitchAlwaysOnTop.IsOn = Settings.Advanced.IsAlwaysOnTop;
            ApplyAlwaysOnTop();

            // 初始化UIA置顶开关
            ToggleSwitchUIAccessTopMost.IsOn = Settings.Advanced.EnableUIAccessTopMost;
            UpdateUIAccessTopMostVisibility();

            App.IsUIAccessTopMostEnabled = Settings.Advanced.EnableUIAccessTopMost;

            // 初始化剪贴板监控
            InitializeClipboardMonitoring();

            // 初始化悬浮窗拦截管理器
            InitializeFloatingWindowInterceptor();

            // 初始化全局快捷键管理器
            InitializeGlobalHotkeyManager();

            // 初始化墨迹渐隐管理器
            InitializeInkFadeManager();

            // 处理命令行参数中的文件路径
            HandleCommandLineFileOpen();

            // 初始化文件关联状态显示
            InitializeFileAssociationStatus();

            // 检查模式设置并应用
            CheckMainWindowVisibility();

            // 检查是否通过--board参数启动，如果是则自动切换到白板模式
            if (App.StartWithBoardMode)
            {
                LogHelper.WriteLogToFile("检测到--board参数，自动切换到白板模式", LogHelper.LogType.Event);
                // 延迟执行，确保UI已完全加载
                Dispatcher.BeginInvoke(new Action(() =>
                {
                    SwitchToBoardMode();
                }), DispatcherPriority.Loaded);
            }

            // 检查是否通过--show参数启动，如果是则确保退出收纳模式并恢复浮动栏
            if (App.StartWithShowMode)
            {
                LogHelper.WriteLogToFile("检测到--show参数，退出收纳模式并恢复浮动栏", LogHelper.LogType.Event);
                // 延迟执行，确保UI已完全加载
                Dispatcher.BeginInvoke(new Action(async () =>
                {
                    // 如果当前处于收纳模式，则展开浮动栏
                    if (isFloatingBarFolded)
                    {
                        await UnFoldFloatingBar(new object());
                    }
                }), DispatcherPriority.Loaded);
            }

            // 初始化计时器控件关联
            Dispatcher.BeginInvoke(new Action(() =>
            {
                if (TimerControl != null && MinimizedTimerControl != null)
                {
                    MinimizedTimerControl.SetParentControl(TimerControl);
                    
                    // 设置PPT时间胶囊的父控件
                    if (PPTTimeCapsule != null)
                    {
                        PPTTimeCapsule.SetParentControl(TimerControl);
                    }

                    TimerControl.ShowMinimizedRequested += (s, args) =>
                    {
                        if (TimerContainer != null && MinimizedTimerContainer != null && MinimizedTimerControl != null)
                        {
                            TimerContainer.Visibility = Visibility.Collapsed;
                            
                            if (Settings.PowerPointSettings.EnablePPTTimeCapsule && 
                                BtnPPTSlideShowEnd.Visibility == Visibility.Visible && 
                                PPTTimeCapsule != null)
                            {
                                MinimizedTimerContainer.Visibility = Visibility.Collapsed;
                            }
                            else
                            {
                                MinimizedTimerContainer.Visibility = Visibility.Visible;
                                MinimizedTimerControl.Visibility = Visibility.Visible;
                            }
                        }
                    };

                    TimerControl.HideMinimizedRequested += (s, args) =>
                    {
                        if (MinimizedTimerContainer != null && MinimizedTimerControl != null)
                        {
                            MinimizedTimerContainer.Visibility = Visibility.Collapsed;
                            MinimizedTimerControl.Visibility = Visibility.Collapsed;
                        }
                        
                        // 如果启用了PPT时间胶囊，停止倒计时显示
                        if (Settings.PowerPointSettings.EnablePPTTimeCapsule && PPTTimeCapsule != null)
                        {
                            PPTTimeCapsule.StopCountdown();
                        }
                    };
                    
                    // 监听计时器完成事件
                    TimerControl.TimerCompleted += (s, args) =>
                    {
                        // 如果启用了PPT时间胶囊且在PPT模式下，触发完成动画
                        if (Settings.PowerPointSettings.EnablePPTTimeCapsule && 
                            BtnPPTSlideShowEnd.Visibility == Visibility.Visible && 
                            PPTTimeCapsule != null)
                        {
                            PPTTimeCapsule.OnTimerCompleted();
                        }
                    };
                }
            }), DispatcherPriority.Loaded);
            AddTouchSupportToSliders();
        }

        private void ShowOobeIfNeeded()
        {
            try
            {
                if (Settings?.Startup == null) return;
                if (Settings.Startup.HasShownOobe) return;

                var oobeWindow = new OobeWindow(Settings)
                {
                    Owner = this,
                    WindowStartupLocation = WindowStartupLocation.CenterOwner
                };
                try
                {
                    App.IsOobeShowing = true;
                    oobeWindow.ShowDialog();
                }
                finally
                {
                    App.IsOobeShowing = false;
                }

                Settings.Startup.HasShownOobe = true;
                SaveSettingsToFile();
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"显示首次启动体验(OOBE)时出错: {ex}", LogHelper.LogType.Error);
            }
            finally
            {
                App.IsOobeShowing = false;
            }
        }

        private void SystemEventsOnDisplaySettingsChanged(object sender, EventArgs e)
        {
            if (!Settings.Advanced.IsEnableResolutionChangeDetection) return;
            ShowNotification($"检测到显示器信息变化，变为{Screen.PrimaryScreen.Bounds.Width}x{Screen.PrimaryScreen.Bounds.Height}）");
            new Thread(() =>
            {
                var isFloatingBarOutsideScreen = false;
                var isInPPTPresentationMode = false;
                Dispatcher.Invoke(() =>
                {
                    isFloatingBarOutsideScreen = IsOutsideOfScreenHelper.IsOutsideOfScreen(ViewboxFloatingBar);
                    isInPPTPresentationMode = BtnPPTSlideShowEnd.Visibility == Visibility.Visible;
                });
                if (isFloatingBarOutsideScreen) dpiChangedDelayAction.DebounceAction(3000, null, () =>
                {
                    if (!isFloatingBarFolded)
                    {
                        if (isInPPTPresentationMode) ViewboxFloatingBarMarginAnimation(60);
                        else ViewboxFloatingBarMarginAnimation(100, true);
                    }
                });
            }).Start();
        }

        public DelayAction dpiChangedDelayAction = new DelayAction();

        private void MainWindow_OnDpiChanged(object sender, DpiChangedEventArgs e)
        {
            if (e.OldDpi.DpiScaleX != e.NewDpi.DpiScaleX && e.OldDpi.DpiScaleY != e.NewDpi.DpiScaleY && Settings.Advanced.IsEnableDPIChangeDetection)
            {
                ShowNotification($"系统DPI发生变化，从 {e.OldDpi.DpiScaleX}x{e.OldDpi.DpiScaleY} 变化为 {e.NewDpi.DpiScaleX}x{e.NewDpi.DpiScaleY}");

                // 如果TimerContainer可见，调整其尺寸
                Dispatcher.Invoke(() =>
                {
                    var timerContainer = FindName("TimerContainer") as FrameworkElement;
                    if (timerContainer != null && timerContainer.Visibility == Visibility.Visible)
                    {
                        AdjustTimerContainerSize();
                    }
                });

                new Thread(() =>
                {
                    var isFloatingBarOutsideScreen = false;
                    var isInPPTPresentationMode = false;
                    Dispatcher.Invoke(() =>
                    {
                        isFloatingBarOutsideScreen = IsOutsideOfScreenHelper.IsOutsideOfScreen(ViewboxFloatingBar);
                        isInPPTPresentationMode = BtnPPTSlideShowEnd.Visibility == Visibility.Visible;
                    });
                    if (isFloatingBarOutsideScreen) dpiChangedDelayAction.DebounceAction(3000, null, () =>
                    {
                        if (!isFloatingBarFolded)
                        {
                            if (isInPPTPresentationMode) ViewboxFloatingBarMarginAnimation(60);
                            else ViewboxFloatingBarMarginAnimation(100, true);
                        }
                    });
                }).Start();
            }
        }

        private void SetWindowMode()
        {
            if (Settings.Advanced.WindowMode)
            {
                WindowState = WindowState.Normal;
                Left = 0.0;
                Top = 0.0;
                Height = SystemParameters.PrimaryScreenHeight;
                Width = SystemParameters.PrimaryScreenWidth;
            }
            else // 全屏
            {
                WindowState = WindowState.Maximized;
            }
        }

        private bool _allowCloseAfterExitVerification;
        private bool _isExitVerificationInProgress;

        private void Window_Closing(object sender, CancelEventArgs e)
        {
            LogHelper.WriteLogToFile("Ink Canvas closing", LogHelper.LogType.Event);

            if (_allowCloseAfterExitVerification)
            {
                _allowCloseAfterExitVerification = false;
                return;
            }

            try
            {
                // 快抽按钮现在集成在主窗口中，不需要单独关闭
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"关闭快抽悬浮按钮时出错: {ex.Message}", LogHelper.LogType.Error);
            }

            try
            {
                if (!App.IsUpdateInstalling && SecurityManager.IsPasswordRequiredForExit(Settings))
                {
                    e.Cancel = true;
                    if (_isExitVerificationInProgress) return;

                    _isExitVerificationInProgress = true;
                    Dispatcher.BeginInvoke(new Action(async () =>
                    {
                        try
                        {
                            bool ok = await SecurityManager.PromptAndVerifyAsync(Settings, this, "退出验证", "请输入安全密码以退出软件。");
                            if (!ok)
                            {
                                LogHelper.WriteLogToFile("Ink Canvas closing cancelled by security password", LogHelper.LogType.Event);
                                return;
                            }

                            _allowCloseAfterExitVerification = true;
                            Close();
                        }
                        catch
                        {
                        }
                        finally
                        {
                            _isExitVerificationInProgress = false;
                        }
                    }), DispatcherPriority.Normal);
                    return;
                }
            }
            catch
            {
            }

            if (!CloseIsFromButton && Settings.Advanced.IsSecondConfirmWhenShutdownApp)
            {
                // 第一个确认对话框
                var result1 = MessageBox.Show("是否继续关闭 InkCanvasForClass，这将丢失当前未保存的墨迹。", "InkCanvasForClass",
                    MessageBoxButton.OKCancel, MessageBoxImage.Warning);

                if (result1 == MessageBoxResult.Cancel)
                {
                    e.Cancel = true;
                    LogHelper.WriteLogToFile("Ink Canvas closing cancelled at first confirmation", LogHelper.LogType.Event);
                    return;
                }

                // 第二个确认对话框
                var result2 = MessageBox.Show("真的狠心关闭 InkCanvasForClass吗？", "InkCanvasForClass",
                    MessageBoxButton.OKCancel, MessageBoxImage.Error);

                if (result2 == MessageBoxResult.Cancel)
                {
                    e.Cancel = true;
                    LogHelper.WriteLogToFile("Ink Canvas closing cancelled at second confirmation", LogHelper.LogType.Event);
                    return;
                }

                // 第三个最终确认对话框
                var result3 = MessageBox.Show("最后确认：确定要关闭 InkCanvasForClass 吗？", "InkCanvasForClass",
                    MessageBoxButton.OKCancel, MessageBoxImage.Question);

                if (result3 == MessageBoxResult.Cancel)
                {
                    e.Cancel = true;
                    LogHelper.WriteLogToFile("Ink Canvas closing cancelled at final confirmation", LogHelper.LogType.Event);
                    return;
                }

                // 所有确认都通过，允许关闭
                e.Cancel = false;
                LogHelper.WriteLogToFile("Ink Canvas closing confirmed by user", LogHelper.LogType.Event);
            }

            if (e.Cancel) LogHelper.WriteLogToFile("Ink Canvas closing cancelled", LogHelper.LogType.Event);
        }

        [DllImport("user32.dll", SetLastError = true)]
        public static extern bool MoveWindow(IntPtr hWnd, int X, int Y, int nWidth, int nHeight, bool bRepaint);

        private void MainWindow_OnSizeChanged(object sender, SizeChangedEventArgs e)
        {
            if (Settings.Advanced.IsEnableForceFullScreen)
            {
                if (isLoaded) ShowNotification(
                    $"检测到窗口大小变化，已自动恢复到全屏：{Screen.PrimaryScreen.Bounds.Width}x{Screen.PrimaryScreen.Bounds.Height}（缩放比例为{Screen.PrimaryScreen.Bounds.Width / SystemParameters.PrimaryScreenWidth}x{Screen.PrimaryScreen.Bounds.Height / SystemParameters.PrimaryScreenHeight}）");
                WindowState = WindowState.Maximized;
                MoveWindow(new WindowInteropHelper(this).Handle, 0, 0,
                    Screen.PrimaryScreen.Bounds.Width,
                    Screen.PrimaryScreen.Bounds.Height, true);
            }
        }


        private void Window_Closed(object sender, EventArgs e)
        {
            SystemEvents.DisplaySettingsChanged -= SystemEventsOnDisplaySettingsChanged;

            try
            {
                // 清理视频展台资源
                if (_cameraService != null)
                {
                    _cameraService.FrameReceived -= CameraService_FrameReceived;
                    _cameraService.ErrorOccurred -= CameraService_ErrorOccurred;
                    _cameraService.Dispose();
                    _cameraService = null;
                }
                lock (_videoPresenterFrameLock)
                {
                    _lastFrame?.Dispose();
                    _lastFrame = null;
                }
            }
            catch { }

            // 释放PPT管理器资源
            DisposePPTManagers();

            // 清理剪贴板监控
            CleanupClipboardMonitoring();
            ClipboardNotification.Stop();

            // 清理全局快捷键管理器
            if (_globalHotkeyManager != null)
            {
                _globalHotkeyManager.Dispose();
                _globalHotkeyManager = null;
            }

            // 清理墨迹渐隐管理器
            if (_inkFadeManager != null)
            {
                _inkFadeManager.ClearAllFadingStrokes();
                _inkFadeManager = null;
            }

            // 清理悬浮窗拦截管理器
            if (_floatingWindowInterceptorManager != null)
            {
                _floatingWindowInterceptorManager.Dispose();
                _floatingWindowInterceptorManager = null;
            }

            // 清理窗口概览模型
            if (_windowOverviewModel != null)
            {
                _windowOverviewModel.Dispose();
                _windowOverviewModel = null;
            }

            // 停止置顶维护定时器
            StopTopmostMaintenance();

            UninstallKeyboardHook();

            // 从Z-Order管理器中移除主窗口
            WindowZOrderManager.UnregisterWindow(this);

            LogHelper.WriteLogToFile("Ink Canvas closed", LogHelper.LogType.Event);

            // 检查是否有待安装的更新
            CheckPendingUpdates();
        }

        private void CheckPendingUpdates()
        {
            try
            {
                // 如果有可用的更新版本且启用了自动更新
                if (AvailableLatestVersion != null && Settings.Startup.IsAutoUpdate)
                {
                    // 检查更新文件是否已下载
                    string updatesFolderPath = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "AutoUpdate");
                    string statusFilePath = Path.Combine(updatesFolderPath, $"DownloadV{AvailableLatestVersion}Status.txt");

                    if (File.Exists(statusFilePath) && File.ReadAllText(statusFilePath).Trim().ToLower() == "true")
                    {
                        LogHelper.WriteLogToFile($"AutoUpdate | Installing pending update v{AvailableLatestVersion} on application close");

                        // 设置为用户主动退出，避免被看门狗判定为崩溃
                        App.IsAppExitByUser = true;

                        // 创建批处理脚本并启动，软件关闭后会执行更新操作
                        AutoUpdateHelper.InstallNewVersionApp(AvailableLatestVersion, true);
                    }
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"AutoUpdate | Error checking pending updates: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        // 使用多线路组下载更新
        private async Task<bool> DownloadUpdateWithFallback(string version, AutoUpdateHelper.UpdateLineGroup primaryGroup, UpdateChannel channel)
        {
            try
            {
                // 如果主要线路组可用，直接使用
                if (primaryGroup != null)
                {
                    LogHelper.WriteLogToFile($"AutoUpdate | 使用主要线路组下载: {primaryGroup.GroupName}");
                    return await AutoUpdateHelper.DownloadSetupFile(version, primaryGroup);
                }

                // 如果主要线路组不可用，获取所有可用线路组
                LogHelper.WriteLogToFile("AutoUpdate | 主要线路组不可用，获取所有可用线路组");
                var availableGroups = await AutoUpdateHelper.GetAvailableLineGroupsOrdered(channel);
                if (availableGroups.Count == 0)
                {
                    LogHelper.WriteLogToFile("AutoUpdate | 没有可用的线路组", LogHelper.LogType.Error);
                    return false;
                }

                LogHelper.WriteLogToFile($"AutoUpdate | 使用 {availableGroups.Count} 个可用线路组进行下载");
                return await AutoUpdateHelper.DownloadSetupFileWithFallback(version, availableGroups);
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"AutoUpdate | 下载更新时出错: {ex.Message}", LogHelper.LogType.Error);
                return false;
            }
        }

        private async void AutoUpdate()
        {
            if (!string.IsNullOrEmpty(Settings.Startup.AutoUpdatePauseUntilDate))
            {
                if (DateTime.TryParse(Settings.Startup.AutoUpdatePauseUntilDate, out DateTime pauseUntilDate))
                {
                    if (DateTime.Now < pauseUntilDate)
                    {
                        LogHelper.WriteLogToFile($"AutoUpdate | 自动更新已暂停，直到 {pauseUntilDate:yyyy-MM-dd}");
                        return;
                    }
                    else
                    {
                        LogHelper.WriteLogToFile($"AutoUpdate | 暂停期已过，恢复自动更新检查");
                        Settings.Startup.AutoUpdatePauseUntilDate = "";
                        SaveSettingsToFile();
                    }
                }
            }

            // 清除之前的更新状态，确保使用新通道重新检查
            AvailableLatestVersion = null;
            AvailableLatestLineGroup = null;

            // 使用当前选择的更新通道检查更新
            var (remoteVersion, lineGroup, apiReleaseNotes) = await AutoUpdateHelper.CheckForUpdates(Settings.Startup.UpdateChannel);
            AvailableLatestVersion = remoteVersion;
            AvailableLatestLineGroup = lineGroup;

            // 声明下载状态变量，用于整个方法
            bool isDownloadSuccessful = false;

            bool hasValidLineGroup = lineGroup != null;

            if (AvailableLatestVersion != null)
            {
                // 检测到新版本，停止重试定时器
                timerCheckAutoUpdateRetry.Stop();
                updateCheckRetryCount = 0;

                // 检测到新版本
                LogHelper.WriteLogToFile($"AutoUpdate | New version available: {AvailableLatestVersion}");

                // 通过 Windows 系统通知提示有新版本
                WindowsNotificationHelper.ShowNewVersionToast(AvailableLatestVersion);

                // 检查是否是用户选择跳过的版本
                if (!string.IsNullOrEmpty(Settings.Startup.SkippedVersion) &&
                    Settings.Startup.SkippedVersion == AvailableLatestVersion)
                {
                    LogHelper.WriteLogToFile($"AutoUpdate | Version {AvailableLatestVersion} was marked to be skipped by the user");
                    return; // 跳过此版本，不执行更新操作
                }

                // 如果检测到的版本与跳过的版本不同，则清除跳过版本记录
                // 这确保用户只能跳过当前最新版本，而不是永久跳过所有更新
                if (!string.IsNullOrEmpty(Settings.Startup.SkippedVersion) &&
                    Settings.Startup.SkippedVersion != AvailableLatestVersion)
                {
                    LogHelper.WriteLogToFile($"AutoUpdate | Detected new version {AvailableLatestVersion} different from skipped version {Settings.Startup.SkippedVersion}, clearing skip record");
                    Settings.Startup.SkippedVersion = "";
                    SaveSettingsToFile();
                }

                // 获取当前版本
                string currentVersion = Assembly.GetExecutingAssembly().GetName().Version.ToString();

                // 如果启用了静默更新，则自动下载更新而不显示提示
                if (Settings.Startup.IsAutoUpdateWithSilence)
                {
                    LogHelper.WriteLogToFile("AutoUpdate | Silent update enabled, downloading update automatically without notification");

                    // 静默下载更新，使用多线路组下载功能
                    isDownloadSuccessful = await DownloadUpdateWithFallback(AvailableLatestVersion, AvailableLatestLineGroup, Settings.Startup.UpdateChannel);

                    if (isDownloadSuccessful)
                    {
                        LogHelper.WriteLogToFile("AutoUpdate | Update downloaded successfully, will install when conditions are met");

                        // 启动检查定时器，定期检查是否可以安装
                        timerCheckAutoUpdateWithSilence.Start();
                    }
                    else
                    {
                        LogHelper.WriteLogToFile("AutoUpdate | Silent update download failed", LogHelper.LogType.Error);
                    }

                    return;
                }

                // 如果没有启用静默更新，则显示常规更新窗口
                string releaseDate = DateTime.Now.ToString("yyyy年MM月dd日");

                // 从服务器获取更新日志
                string releaseNotes = await AutoUpdateHelper.GetUpdateLog(Settings.Startup.UpdateChannel);

                // 如果获取失败，使用默认文本
                if (string.IsNullOrEmpty(releaseNotes))
                {
                    releaseNotes = $@"# InkCanvasForClass v{AvailableLatestVersion}更新
                
                    无法获取更新日志，但新版本已准备就绪。";
                }

                // 创建并显示更新窗口
                HasNewUpdateWindow updateWindow = new HasNewUpdateWindow(currentVersion, AvailableLatestVersion, releaseDate, releaseNotes);
                updateWindow.Owner = this;
                bool? dialogResult = updateWindow.ShowDialog();

                // 如果窗口被关闭但没有点击按钮，则不执行任何操作
                if (dialogResult != true)
                {
                    LogHelper.WriteLogToFile("AutoUpdate | Update dialog closed without selection");
                    return;
                }

                // 不再从更新窗口获取自动更新设置

                // 根据用户选择处理更新
                switch (updateWindow.Result)
                {
                    case HasNewUpdateWindow.UpdateResult.UpdateNow:
                        // 立即更新：显示下载进度，下载完成后立即安装
                        LogHelper.WriteLogToFile("AutoUpdate | User chose to update now");

                        // 显示下载进度提示
                        MessageBox.Show("开始下载更新，请稍候...", "正在更新", MessageBoxButton.OK, MessageBoxImage.Information);

                        // 下载更新文件，使用多线路组下载功能
                        isDownloadSuccessful = await DownloadUpdateWithFallback(AvailableLatestVersion, AvailableLatestLineGroup, Settings.Startup.UpdateChannel);

                        if (isDownloadSuccessful)
                        {
                            // 下载成功，提示用户准备安装
                            MessageBoxResult result = MessageBox.Show("更新已下载完成，点击确定后将关闭软件并安装新版本！", "安装更新", MessageBoxButton.OKCancel, MessageBoxImage.Information);

                            // 只有当用户点击确定按钮后才关闭软件
                            if (result == MessageBoxResult.OK)
                            {
                                // 设置为用户主动退出，避免被看门狗判定为崩溃
                                App.IsAppExitByUser = true;

                                // 准备批处理脚本
                                AutoUpdateHelper.InstallNewVersionApp(AvailableLatestVersion, true);  // 修改为静默模式，避免重复启动进程

                                // 关闭软件，让安装程序接管
                                Application.Current.Shutdown();
                            }
                            else
                            {
                                LogHelper.WriteLogToFile("AutoUpdate | User cancelled update installation");
                            }
                        }
                        else
                        {
                            // 下载失败
                            MessageBox.Show("更新下载失败，请检查网络连接后重试。", "下载失败", MessageBoxButton.OK, MessageBoxImage.Error);
                        }
                        break;

                    case HasNewUpdateWindow.UpdateResult.UpdateLater:
                        // 稍后更新：静默下载，在软件关闭时自动安装
                        LogHelper.WriteLogToFile("AutoUpdate | User chose to update later");

                        // 不管设置如何，都进行下载，使用多线路组下载功能
                        isDownloadSuccessful = await DownloadUpdateWithFallback(AvailableLatestVersion, AvailableLatestLineGroup, Settings.Startup.UpdateChannel);

                        if (isDownloadSuccessful)
                        {
                            LogHelper.WriteLogToFile("AutoUpdate | Update downloaded successfully, will install when application closes");

                            // 设置标志，在应用程序关闭时安装
                            Settings.Startup.IsAutoUpdate = true;
                            Settings.Startup.IsAutoUpdateWithSilence = true;

                            // 启动检查定时器
                            timerCheckAutoUpdateWithSilence.Start();

                            // 通知用户
                            MessageBox.Show("更新已下载完成，将在软件关闭时自动安装。", "更新已准备就绪", MessageBoxButton.OK, MessageBoxImage.Information);
                        }
                        else
                        {
                            LogHelper.WriteLogToFile("AutoUpdate | Update download failed", LogHelper.LogType.Error);
                            MessageBox.Show("更新下载失败，请检查网络连接后重试。", "下载失败", MessageBoxButton.OK, MessageBoxImage.Error);
                        }
                        break;

                    case HasNewUpdateWindow.UpdateResult.SkipVersion:
                        // 跳过该版本：记录到设置中
                        LogHelper.WriteLogToFile($"AutoUpdate | User chose to skip version {AvailableLatestVersion}");

                        // 记录要跳过的版本号
                        Settings.Startup.SkippedVersion = AvailableLatestVersion;

                        // 保存设置到文件
                        SaveSettingsToFile();

                        // 通知用户
                        MessageBox.Show($"已设置跳过版本 {AvailableLatestVersion}，在下次发布新版本之前不会再提示更新。",
                                       "已跳过此版本",
                                       MessageBoxButton.OK,
                                       MessageBoxImage.Information);
                        break;
                }
            }
            else if (hasValidLineGroup)
            {
                LogHelper.WriteLogToFile("AutoUpdate | Current version is already the latest, no retry needed");

                // 停止重试定时器
                timerCheckAutoUpdateRetry.Stop();
                updateCheckRetryCount = 0;
            }
            else
            {
                // 检查更新失败，启动重试定时器
                LogHelper.WriteLogToFile("AutoUpdate | Update check failed, starting retry timer");

                // 重置重试计数
                updateCheckRetryCount = 0;

                // 启动重试定时器，10分钟后重新检查
                timerCheckAutoUpdateRetry.Start();

                // 清理更新文件夹
                AutoUpdateHelper.DeleteUpdatesFolder();
            }
        }

        // 新增：崩溃后操作设置按钮事件
        private void RadioCrashAction_Checked(object sender, RoutedEventArgs e)
        {
            if (RadioCrashSilentRestart != null && RadioCrashSilentRestart.IsChecked == true)
            {
                App.CrashAction = App.CrashActionType.SilentRestart;
                Settings.Startup.CrashAction = 0;
            }
            else if (RadioCrashNoAction != null && RadioCrashNoAction.IsChecked == true)
            {
                App.CrashAction = App.CrashActionType.NoAction;
                Settings.Startup.CrashAction = 1;
            }
            SaveSettingsToFile();
            // 强制同步全局变量，防止后台逻辑未及时感知
            App.SyncCrashActionFromSettings();
        }

        // 添加一个辅助方法，根据当前编辑模式设置光标
        public void SetCursorBasedOnEditingMode(InkCanvas canvas)
        {
            // 套索选择模式下光标始终显示，无论用户设置如何
            if (canvas.EditingMode == InkCanvasEditingMode.Select)
            {
                canvas.UseCustomCursor = true;
                canvas.ForceCursor = true;
                canvas.Cursor = Cursors.Cross;
                System.Windows.Forms.Cursor.Show();
                return;
            }

            // 其他模式按照用户设置处理
            if (Settings.Canvas.IsShowCursor)
            {
                canvas.UseCustomCursor = true;
                canvas.ForceCursor = true;

                // 根据编辑模式设置不同的光标
                if (canvas.EditingMode == InkCanvasEditingMode.EraseByPoint)
                {
                    canvas.Cursor = Cursors.Cross;
                }
                else if (canvas.EditingMode == InkCanvasEditingMode.Ink)
                {
                    if (_cachedPenCursor == null)
                    {
                        lock (_cursorLock)
                        {
                            if (_cachedPenCursor == null)
                            {
                                try
                                {
                                    var sri = Application.GetResourceStream(new Uri("Resources/Cursors/Pen.cur", UriKind.Relative));
                                    if (sri != null)
                                    {
                                        _cachedPenCursor = new Cursor(sri.Stream);
                                    }
                                }
                                catch (Exception ex)
                                {
                                    LogHelper.WriteLogToFile($"加载 Pen 光标资源失败: {ex.Message}", LogHelper.LogType.Error);
                                }
                            }
                        }
                    }
                    if (_cachedPenCursor != null)
                    {
                        canvas.Cursor = _cachedPenCursor;
                    }
                }

                // 确保光标可见，无论是鼠标、触控还是手写笔
                System.Windows.Forms.Cursor.Show();

                // 确保手写笔模式下也能显示光标
                if (Tablet.TabletDevices.Count > 0)
                {
                    foreach (TabletDevice device in Tablet.TabletDevices)
                    {
                        if (device.Type == TabletDeviceType.Stylus)
                        {
                            // 手写笔设备存在，强制显示光标
                            System.Windows.Forms.Cursor.Show();
                            break;
                        }
                    }
                }
            }
            else
            {
                canvas.UseCustomCursor = false;
                canvas.ForceCursor = false;
                System.Windows.Forms.Cursor.Show();
            }
        }

        // 鼠标输入
        private void inkCanvas_PreviewMouseDown(object sender, MouseButtonEventArgs e)
        {
            // 使用辅助方法设置光标
            SetCursorBasedOnEditingMode(sender as InkCanvas);

            // 检查是否点击了空白区域或其他非图片元素
            var hitTest = e.OriginalSource;
            if (!(hitTest is Image) && !(hitTest is MediaElement))
            {
                // 如果当前有选中的元素，取消选中状态
                if (currentSelectedElement != null)
                {
                    // 取消选中元素
                    UnselectElement(currentSelectedElement);
                    currentSelectedElement = null;

                    // 重置为选择模式，确保用户可以继续选择其他元素
                    SetCurrentToolMode(InkCanvasEditingMode.Select);
                    // 更新模式缓存
                    UpdateCurrentToolMode("select");
                    // 刷新浮动栏高光显示
                    SetFloatingBarHighlightPosition("select");
                }
            }
        }

        // 手写笔输入
        private void inkCanvas_StylusDown(object sender, StylusDownEventArgs e)
        {
            // 使用辅助方法设置光标
            SetCursorBasedOnEditingMode(sender as InkCanvas);
        }

        // 触摸结束，恢复光标

        #endregion Definations and Loading

        #region Navigation Sidebar Methods

        // 侧边栏导航按钮事件处理
        private void NavStartup_Click(object sender, RoutedEventArgs e)
        {
            // 切换到启动设置页面
            ShowSettingsSection("startup");
        }

        private void NavCanvas_Click(object sender, RoutedEventArgs e)
        {
            // 切换到画布设置页面
            ShowSettingsSection("canvas");
        }

        private void NavGesture_Click(object sender, RoutedEventArgs e)
        {
            // 切换到手势设置页面
            ShowSettingsSection("gesture");
        }

        private void NavInkRecognition_Click(object sender, RoutedEventArgs e)
        {
            // 切换到墨迹识别设置页面
            ShowSettingsSection("inkrecognition");
        }

        private void NavCrashAction_Click(object sender, RoutedEventArgs e)
        {
            // 切换到崩溃处理设置页面
            ShowSettingsSection("crashaction");
        }

        private void NavPPT_Click(object sender, RoutedEventArgs e)
        {
            // 切换到PPT设置页面
            ShowSettingsSection("ppt");
        }

        private void NavAdvanced_Click(object sender, RoutedEventArgs e)
        {
            // 切换到高级设置页面
            ShowSettingsSection("advanced");
        }

        private void NavAutomation_Click(object sender, RoutedEventArgs e)
        {
            // 切换到自动化设置页面
            ShowSettingsSection("automation");
        }

        private void NavRandomWindow_Click(object sender, RoutedEventArgs e)
        {
            // 切换到随机窗口设置页面
            ShowSettingsSection("randomwindow");
        }

        private void NavAbout_Click(object sender, RoutedEventArgs e)
        {
            // 切换到关于页面
            ShowSettingsSection("about");
            // 刷新设备信息
            RefreshDeviceInfo();
        }

        // 个性化设置
        private void NavTheme_Click(object sender, RoutedEventArgs e)
        {
            // 切换到个性化设置页面
            ShowSettingsSection("theme");
        }

        // 快捷键设置
        private void NavShortcuts_Click(object sender, RoutedEventArgs e)
        {
            OpenHotkeySettingsWindow();
        }

        private void BtnCloseSettings_Click(object sender, RoutedEventArgs e)
        {
            // 关闭设置面板
            BorderSettings.Visibility = Visibility.Collapsed;
            // 设置蒙版为不可点击，并清除背景
            BorderSettingsMask.IsHitTestVisible = false;
            BorderSettingsMask.Background = null; // 确保清除蒙层背景
        }

        /// <summary>
        /// 刷新设备信息按钮点击事件
        /// </summary>
        private void RefreshDeviceInfo_Click(object sender, RoutedEventArgs e)
        {
            RefreshDeviceInfo();
        }

        /// <summary>
        /// 刷新设备信息显示
        /// </summary>
        private void RefreshDeviceInfo()
        {
            try
            {
                // 获取设备ID
                string deviceId = DeviceIdentifier.GetDeviceId();
                DeviceIdTextBlock.Text = deviceId;

                // 获取使用频率
                var usageFrequency = DeviceIdentifier.GetUsageFrequency();
                string frequencyText;
                switch (usageFrequency)
                {
                    case DeviceIdentifier.UsageFrequency.High:
                        frequencyText = "高频用户";
                        break;
                    case DeviceIdentifier.UsageFrequency.Medium:
                        frequencyText = "中频用户";
                        break;
                    case DeviceIdentifier.UsageFrequency.Low:
                        frequencyText = "低频用户";
                        break;
                    default:
                        frequencyText = "未知";
                        break;
                }
                UsageFrequencyTextBlock.Text = frequencyText;

                // 获取更新优先级
                var updatePriority = DeviceIdentifier.GetUpdatePriority();
                string priorityText;
                switch (updatePriority)
                {
                    case DeviceIdentifier.UpdatePriority.High:
                        priorityText = "高优先级（优先推送更新）";
                        break;
                    case DeviceIdentifier.UpdatePriority.Medium:
                        priorityText = "中优先级（正常推送更新）";
                        break;
                    case DeviceIdentifier.UpdatePriority.Low:
                        priorityText = "低优先级（延迟推送更新）";
                        break;
                    default:
                        priorityText = "未知";
                        break;
                }
                UpdatePriorityTextBlock.Text = priorityText;

                // 获取使用统计（秒级精度）
                var (launchCount, totalSeconds, avgSessionSeconds, _) = DeviceIdentifier.GetUsageStats();
                LaunchCountTextBlock.Text = launchCount.ToString();

                // 使用新的格式化方法显示秒级精度的使用时长
                string totalUsageText = DeviceIdentifier.FormatDuration(totalSeconds);
                TotalUsageTextBlock.Text = totalUsageText;

                LogHelper.WriteLogToFile($"MainWindow | 设备信息已刷新 - ID: {deviceId}, 频率: {frequencyText}, 优先级: {priorityText}");
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"MainWindow | 刷新设备信息失败: {ex.Message}", LogHelper.LogType.Error);

                // 显示错误信息
                DeviceIdTextBlock.Text = "获取失败";
                UsageFrequencyTextBlock.Text = "获取失败";
                UpdatePriorityTextBlock.Text = "获取失败";
                LaunchCountTextBlock.Text = "获取失败";
                TotalUsageTextBlock.Text = "获取失败";
            }
        }

        // 折叠侧边栏
        private void CollapseNavSidebar_Click(object sender, RoutedEventArgs e)
        {
            // 折叠/展开侧边栏
            var columnDefinitions = ((Grid)BorderSettings.Child).ColumnDefinitions;
            if (columnDefinitions[0].Width.Value == 50)
            {
                // 折叠侧边栏
                columnDefinitions[0].Width = new GridLength(0);
            }
            else
            {
                // 展开侧边栏
                columnDefinitions[0].Width = new GridLength(50);
            }
        }

        // 显示侧边栏
        private void ShowNavSidebar_Click(object sender, RoutedEventArgs e)
        {
            // 确保侧边栏展开
            var columnDefinitions = ((Grid)BorderSettings.Child).ColumnDefinitions;
            columnDefinitions[0].Width = new GridLength(50);
        }

        // 显示指定的设置部分
        private async void ShowSettingsSection(string sectionTag)
        {
            // 显示设置面板
            BorderSettings.Visibility = Visibility.Visible;
            // 设置蒙版为可点击，并添加半透明背景
            BorderSettingsMask.IsHitTestVisible = true;
            BorderSettingsMask.Background = new SolidColorBrush(Color.FromArgb(1, 0, 0, 0));

            // 获取SettingsPanelScrollViewer中的所有GroupBox
            var stackPanel = SettingsPanelScrollViewer.Content as StackPanel;
            if (stackPanel == null) return;

            // 确保所有GroupBox都是可见的
            foreach (var child in stackPanel.Children)
            {
                if (child is GroupBox groupBox)
                {
                    groupBox.Visibility = Visibility.Visible;
                }
            }

            // 确保UI完全更新
            await Dispatcher.InvokeAsync(() => { }, DispatcherPriority.Render);

            // 根据传入的sectionTag滚动到相应的设置部分
            GroupBox targetGroupBox = null;

            switch (sectionTag.ToLower())
            {
                case "startup":
                    targetGroupBox = FindGroupBoxByHeader(stackPanel, "启动");
                    break;
                case "canvas":
                    targetGroupBox = FindGroupBoxByHeader(stackPanel, "画板和墨迹");
                    break;
                case "gesture":
                    targetGroupBox = FindGroupBoxByHeader(stackPanel, "手势");
                    break;
                case "inkrecognition":
                    targetGroupBox = GroupBoxInkRecognition;
                    break;
                case "crashaction":
                    targetGroupBox = FindGroupBoxByHeader(stackPanel, "崩溃后操作");
                    break;
                case "ppt":
                    targetGroupBox = FindGroupBoxByHeader(stackPanel, "PPT联动");
                    break;
                case "advanced":
                    targetGroupBox = FindGroupBoxByHeader(stackPanel, "高级设置");
                    break;
                case "automation":
                    targetGroupBox = FindGroupBoxByHeader(stackPanel, "自动化");
                    break;
                case "randomwindow":
                    targetGroupBox = GroupBoxRandWindow;
                    break;
                case "theme":
                    targetGroupBox = GroupBoxAppearanceNewUI;
                    break;
                case "shortcuts":
                    // 快捷键设置部分可能尚未实现
                    targetGroupBox = FindGroupBoxByHeader(stackPanel, "快捷键");
                    break;
                case "about":
                    targetGroupBox = FindGroupBoxByHeader(stackPanel, "关于");
                    break;
                case "plugins":
                    targetGroupBox = GroupBoxPlugins;
                    break;
                default:
                    // 默认滚动到顶部
                    SettingsPanelScrollViewer.ScrollToTop();
                    return;
            }

            // 如果找到目标GroupBox，则滚动到它的位置
            if (targetGroupBox != null)
            {
                // 使用动画平滑滚动到目标位置
                ScrollToElement(targetGroupBox);

                // 高亮显示当前选中的导航项
                UpdateNavigationButtonState(sectionTag);
            }
            else
            {
                // 如果没有找到目标GroupBox，则滚动到顶部
                SettingsPanelScrollViewer.ScrollToTop();
            }
        }

        // 根据Header文本查找GroupBox
        private GroupBox FindGroupBoxByHeader(StackPanel parent, string headerText)
        {
            foreach (var child in parent.Children)
            {
                if (child is GroupBox groupBox)
                {
                    // 查找GroupBox的Header
                    if (groupBox.Header is TextBlock headerTextBlock &&
                        headerTextBlock.Text != null &&
                        headerTextBlock.Text.Contains(headerText))
                    {
                        return groupBox;
                    }
                }
            }
            return null;
        }

        // 平滑滚动到指定元素
        private async void ScrollToElement(FrameworkElement element)
        {
            if (element == null || SettingsPanelScrollViewer == null) return;

            try
            {
                // 暂时禁用滚动事件处理
                SettingsPanelScrollViewer.ScrollChanged -= SettingsPanelScrollViewer_ScrollChanged;

                // 记录当前滚动位置
                double originalOffset = SettingsPanelScrollViewer.VerticalOffset;

                // 将ScrollViewer内部的位置信息重置到顶部（不会触发视觉更新）
                SettingsPanelScrollViewer.ScrollToHome();

                // 使用Dispatcher进行延迟处理，确保布局更新
                await Dispatcher.InvokeAsync(() =>
                {
                    try
                    {
                        // 强制更新布局
                        SettingsPanelScrollViewer.UpdateLayout();

                        // 获取元素相对于顶部的准确位置
                        Point elementPosition = element.TransformToAncestor(SettingsPanelScrollViewer).Transform(new Point(0, 0));

                        // 计算目标位置，减去一些偏移，使元素不会贴在顶部
                        double targetPosition = elementPosition.Y - 20;

                        // 确保目标位置不小于0
                        targetPosition = Math.Max(0, targetPosition);

                        // 直接设置滚动位置，不使用动画
                        SettingsPanelScrollViewer.ScrollToVerticalOffset(targetPosition);
                    }
                    catch (Exception)
                    {
                        // 如果出现异常，恢复到原来的滚动位置
                        SettingsPanelScrollViewer.ScrollToVerticalOffset(originalOffset);
                    }
                    finally
                    {
                        // 重新启用滚动事件处理
                        SettingsPanelScrollViewer.ScrollChanged += SettingsPanelScrollViewer_ScrollChanged;
                    }
                }, DispatcherPriority.Render);
            }
            catch (Exception)
            {
                // 确保在异常情况下也重新启用滚动事件处理
                SettingsPanelScrollViewer.ScrollChanged += SettingsPanelScrollViewer_ScrollChanged;
            }
        }

        // 滚动条变化事件处理
        private void SettingsPanelScrollViewer_ScrollChanged(object sender, ScrollChangedEventArgs e)
        {
            // 可以在这里添加滚动事件的处理逻辑，如果需要的话
        }

        // 更新导航按钮状态
        private void UpdateNavigationButtonState(string activeTag)
        {
            // 清除所有导航按钮的Tag属性
            ClearAllNavButtonTags();

            // 设置当前活动按钮的Tag属性
            switch (activeTag.ToLower())
            {
                case "startup":
                    SetNavButtonTag("startup");
                    break;
                case "canvas":
                    SetNavButtonTag("canvas");
                    break;
                case "gesture":
                    SetNavButtonTag("gesture");
                    break;
                case "inkrecognition":
                    SetNavButtonTag("inkrecognition");
                    break;
                case "crashaction":
                    SetNavButtonTag("crashaction");
                    break;
                case "ppt":
                    SetNavButtonTag("ppt");
                    break;
                case "advanced":
                    SetNavButtonTag("advanced");
                    break;
                case "automation":
                    SetNavButtonTag("automation");
                    break;
                case "randomwindow":
                    SetNavButtonTag("randomwindow");
                    break;
                case "theme":
                    SetNavButtonTag("theme");
                    break;
                case "shortcuts":
                    SetNavButtonTag("shortcuts");
                    break;
                case "about":
                    SetNavButtonTag("about");
                    break;
                case "plugins":
                    SetNavButtonTag("plugins");
                    break;
            }
        }

        // 清除所有导航按钮的Tag属性
        private void ClearAllNavButtonTags()
        {
            var grid = BorderSettings.Child as Grid;
            if (grid == null) return;

            var navSidebar = grid.Children[0] as Border;
            if (navSidebar == null) return;

            var navGrid = navSidebar.Child as Grid;
            if (navGrid == null) return;

            var scrollViewer = navGrid.Children[1] as ScrollViewer;
            if (scrollViewer == null) return;

            var stackPanel = scrollViewer.Content as StackPanel;
            if (stackPanel == null) return;

            foreach (var child in stackPanel.Children)
            {
                if (child is Button button)
                {
                    button.Tag = null;
                }
            }
        }

        // 设置导航按钮的Tag属性
        private void SetNavButtonTag(string tag)
        {
            var grid = BorderSettings.Child as Grid;
            if (grid == null) return;

            var navSidebar = grid.Children[0] as Border;
            if (navSidebar == null) return;

            var navGrid = navSidebar.Child as Grid;
            if (navGrid == null) return;

            var scrollViewer = navGrid.Children[1] as ScrollViewer;
            if (scrollViewer == null) return;

            var stackPanel = scrollViewer.Content as StackPanel;
            if (stackPanel == null) return;

            foreach (var child in stackPanel.Children)
            {
                if (child is Button button)
                {
                    // 检查按钮的ToolTip属性，根据tag设置对应的按钮
                    string buttonTag = button.Tag as string;

                    // 如果按钮的Tag与要设置的tag匹配，则设置Tag
                    if (buttonTag != null && buttonTag.ToLower() == tag.ToLower())
                    {
                        button.Tag = tag;
                        return;
                    }
                }
            }
        }

        // 根据Header文本查找并显示GroupBox
        private void ShowGroupBoxByHeader(StackPanel parent, string headerText)
        {
            foreach (var child in parent.Children)
            {
                if (child is GroupBox groupBox)
                {
                    // 查找GroupBox的Header
                    if (groupBox.Header is TextBlock headerTextBlock &&
                        headerTextBlock.Text != null &&
                        headerTextBlock.Text.Contains(headerText))
                    {
                        groupBox.Visibility = Visibility.Visible;
                        return;
                    }
                }
            }
        }

        #endregion Navigation Sidebar Methods

        #region 插件???

        // 添加插件系统初始化方法
        private void InitializePluginSystem()
        {
            try
            {
                // 初始化插件管理器
                PluginManager.Instance.Initialize();
                LogHelper.WriteLogToFile("插件系统已初始化");
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"初始化插件系统时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        // 添加插件管理导航点击事件处理
        private void NavPlugins_Click(object sender, RoutedEventArgs e)
        {
            ShowSettingsSection("plugins");
        }

        // 添加打开插件管理器按钮点击事件
        private void BtnOpenPluginManager_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                // 暂时隐藏设置面板
                BorderSettings.Visibility = Visibility.Hidden;
                BorderSettingsMask.Visibility = Visibility.Hidden;

                // 创建并显示插件设置窗口
                PluginSettingsWindow pluginSettingsWindow = new PluginSettingsWindow();

                // 设置窗口关闭事件，用于在插件管理窗口关闭后恢复设置面板
                pluginSettingsWindow.Closed += (s, args) =>
                {
                    // 恢复设置面板显示
                    BorderSettings.Visibility = Visibility.Visible;
                    BorderSettingsMask.Visibility = Visibility.Visible;
                };

                // 显示插件设置窗口
                pluginSettingsWindow.ShowDialog();
            }
            catch (Exception ex)
            {
                // 确保在发生错误时也恢复设置面板显示
                BorderSettings.Visibility = Visibility.Visible;
                BorderSettingsMask.Visibility = Visibility.Visible;

                LogHelper.WriteLogToFile($"打开插件管理器时出错: {ex.Message}", LogHelper.LogType.Error);
                MessageBox.Show($"打开插件管理器时出错: {ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }
        #endregion 插件???

        #region 新设置窗口

            private async void BtnOpenNewSettings_Click(object sender, RoutedEventArgs e)
            {
                if (isOpeningOrHidingSettingsPane) return;
                HideSubPanels();
                {
                    try
                    {
                        if (SecurityManager.IsPasswordRequiredForEnterSettings(Settings))
                        {
                            bool ok = await SecurityManager.PromptAndVerifyAsync(Settings, this, "进入设置", "请输入安全密码以进入设置。");
                            if (!ok) return;
                        }
                    }
                    catch (Exception ex)
                    {
                        LogHelper.WriteLogToFile($"安全密码校验失败: {ex}", LogHelper.LogType.Error);
                        return;
                    }

                    var settingsWindow = new SettingsWindow();
                    settingsWindow.Owner = this;
                    settingsWindow.ShowDialog();
                }
            }

        #endregion 新设置窗口

        // 在MainWindow类中添加：
        private void ApplyCurrentEraserShape()
        {
            double k = 1;
            switch (Settings.Canvas.EraserSize)
            {
                case 0:
                    k = Settings.Canvas.EraserShapeType == 0 ? 0.5 : 0.7;
                    break;
                case 1:
                    k = Settings.Canvas.EraserShapeType == 0 ? 0.8 : 0.9;
                    break;
                case 3:
                    k = Settings.Canvas.EraserShapeType == 0 ? 1.25 : 1.2;
                    break;
                case 4:
                    k = Settings.Canvas.EraserShapeType == 0 ? 1.5 : 1.3;
                    break;
            }
            if (Settings.Canvas.EraserShapeType == 0)
            {
                inkCanvas.EraserShape = new EllipseStylusShape(k * 90, k * 90);
            }
            else if (Settings.Canvas.EraserShapeType == 1)
            {
                inkCanvas.EraserShape = new RectangleStylusShape(k * 90 * 0.6, k * 90);
            }
        }

        // 显示指定页
        private void ShowPage(int index)
        {
            if (index < 0 || index >= whiteboardPages.Count) return;
            // 只切换可见性
            for (int i = 0; i < whiteboardPages.Count; i++)
            {
                whiteboardPages[i].Visibility = (i == index) ? Visibility.Visible : Visibility.Collapsed;
            }
            currentCanvas = whiteboardPages[index];
            currentPageIndex = index;
        }
        // 新建页面
        private void AddNewPage()
        {
            var newCanvas = new System.Windows.Controls.Canvas();
            whiteboardPages.Add(newCanvas);
            InkCanvasGridForInkReplay.Children.Add(newCanvas);
            ShowPage(whiteboardPages.Count - 1);
        }
        // 删除当前页面
        private void DeleteCurrentPage()
        {
            if (whiteboardPages.Count <= 1) return;
            InkCanvasGridForInkReplay.Children.Remove(currentCanvas);
            whiteboardPages.RemoveAt(currentPageIndex);
            if (currentPageIndex >= whiteboardPages.Count)
                currentPageIndex = whiteboardPages.Count - 1;
            ShowPage(currentPageIndex);
        }
        // 快速面板退出PPT放映按钮事件
        private void ExitPPTSlideShow_MouseUp(object sender, MouseButtonEventArgs e)
        {
            // 直接调用PPT放映结束按钮的逻辑
            BtnPPTSlideShowEnd_Click(BtnPPTSlideShowEnd, null);
        }

        private void HistoryRollbackButton_Click(object sender, RoutedEventArgs e)
        {
            // 收起设置面板（与插件面板一致）
            BorderSettings.Visibility = Visibility.Hidden;
            BorderSettingsMask.Visibility = Visibility.Hidden;
            var win = new HistoryRollbackWindow(Settings.Startup.UpdateChannel);
            win.ShowDialog();
            // 可选：回滚窗口关闭后恢复设置面板显示
            BorderSettings.Visibility = Visibility.Visible;
            BorderSettingsMask.Visibility = Visibility.Visible;
        }

        [DllImport("user32.dll")]
        private static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);
        [DllImport("user32.dll")]
        private static extern int GetWindowLong(IntPtr hWnd, int nIndex);
        [DllImport("user32.dll")]
        private static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);
        [DllImport("user32.dll")]
        private static extern bool BringWindowToTop(IntPtr hWnd);
        [DllImport("user32.dll")]
        private static extern bool SetForegroundWindow(IntPtr hWnd);
        [DllImport("user32.dll")]
        private static extern bool PostMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);
        [DllImport("kernel32.dll")]
        private static extern uint GetCurrentProcessId();

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr SetWindowsHookEx(int idHook, LowLevelKeyboardProc lpfn, IntPtr hMod, uint dwThreadId);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        private static extern bool UnhookWindowsHookEx(IntPtr hhk);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr GetModuleHandle(string lpModuleName);

        private const int WH_KEYBOARD_LL = 13;
        private const int WM_KEYDOWN = 0x0100;
        private const int WM_KEYUP = 0x0101;
        private const int WM_SYSKEYDOWN = 0x0104;
        private const int WM_SYSKEYUP = 0x0105;

        private delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);

        [StructLayout(LayoutKind.Sequential)]
        private struct KBDLLHOOKSTRUCT
        {
            public uint vkCode;
            public uint scanCode;
            public uint flags;
            public uint time;
            public IntPtr dwExtraInfo;
        }

        private LowLevelKeyboardProc _keyboardProc;
        private IntPtr _keyboardHookId = IntPtr.Zero;

        private const int GWL_EXSTYLE = -20;
        private const int WS_EX_NOACTIVATE = 0x08000000;
        private const int WS_EX_TOPMOST = 0x00000008;
        private static readonly IntPtr HWND_TOPMOST = new IntPtr(-1);
        private static readonly IntPtr HWND_NOTOPMOST = new IntPtr(-2);
        private const uint SWP_NOMOVE = 0x0002;
        private const uint SWP_NOSIZE = 0x0001;
        private const uint SWP_NOACTIVATE = 0x0010;
        private const uint SWP_SHOWWINDOW = 0x0040;
        private const uint SWP_NOOWNERZORDER = 0x0200;

        // 添加定时器来维护置顶状态
        private DispatcherTimer topmostMaintenanceTimer;
        private DispatcherTimer autoSaveStrokesTimer;
        private bool isTopmostMaintenanceEnabled;

        private IntPtr KeyboardHookProc(int nCode, IntPtr wParam, IntPtr lParam)
        {
            return CallNextHookEx(_keyboardHookId, nCode, wParam, lParam);
        }

        private void InstallKeyboardHook()
        {
            if (_keyboardHookId == IntPtr.Zero)
            {
                _keyboardProc = KeyboardHookProc;
                _keyboardHookId = SetWindowsHookEx(WH_KEYBOARD_LL, _keyboardProc,
                    GetModuleHandle(null), 0);
                if (_keyboardHookId == IntPtr.Zero)
                {
                    LogHelper.WriteLogToFile("安装低级键盘钩子失败", LogHelper.LogType.Error);
                }
            }
        }

        private void UninstallKeyboardHook()
        {
            if (_keyboardHookId != IntPtr.Zero)
            {
                UnhookWindowsHookEx(_keyboardHookId);
                _keyboardHookId = IntPtr.Zero;
                _keyboardProc = null;
            }
        }

        private void ApplyNoFocusMode()
        {
            var hwnd = new WindowInteropHelper(this).Handle;
            int exStyle = GetWindowLong(hwnd, GWL_EXSTYLE);

            bool shouldBeNoFocus = isTemporarilyDisablingNoFocusMode ?
                false : Settings.Advanced.IsNoFocusMode;

            if (shouldBeNoFocus)
            {
                SetWindowLong(hwnd, GWL_EXSTYLE, exStyle | WS_EX_NOACTIVATE);
                InstallKeyboardHook();
            }
            else
            {
                SetWindowLong(hwnd, GWL_EXSTYLE, exStyle & ~WS_EX_NOACTIVATE);
                UninstallKeyboardHook();
            }
        }

        private void ApplyAlwaysOnTop()
        {
            try
            {
                var hwnd = new WindowInteropHelper(this).Handle;
                if (Settings.Advanced.IsAlwaysOnTop)
                {
                    Topmost = true;

                    // 1. 设置窗口样式为置顶
                    int exStyle = GetWindowLong(hwnd, GWL_EXSTYLE);
                    SetWindowLong(hwnd, GWL_EXSTYLE, exStyle | WS_EX_TOPMOST);

                    // 2. 使用SetWindowPos确保窗口在最顶层
                    SetWindowPos(hwnd, HWND_TOPMOST, 0, 0, 0, 0,
                        SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE | SWP_SHOWWINDOW | SWP_NOOWNERZORDER);

                    // 3. 如果启用了无焦点模式且未启用UIA置顶，需要特殊处理
                    if (Settings.Advanced.IsNoFocusMode && !Settings.Advanced.EnableUIAccessTopMost)
                    {
                        // 启动置顶维护定时器
                        StartTopmostMaintenance();
                    }
                    else
                    {
                        // 停止置顶维护定时器
                        StopTopmostMaintenance();
                    }
                }
                else
                {
                    // 取消置顶时
                    // 1. 先使用Win32 API取消置顶
                    SetWindowPos(hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,
                        SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE | SWP_SHOWWINDOW | SWP_NOOWNERZORDER);

                    // 2. 移除置顶窗口样式
                    int exStyle = GetWindowLong(hwnd, GWL_EXSTYLE);
                    SetWindowLong(hwnd, GWL_EXSTYLE, exStyle & ~WS_EX_TOPMOST);

                    // 3. 停止置顶维护定时器
                    StopTopmostMaintenance();
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"应用窗口置顶失败: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 启动置顶维护定时器
        /// </summary>
        private void StartTopmostMaintenance()
        {
            if (Settings.Advanced.EnableUIAccessTopMost)
            {
                return;
            }

            if (isTopmostMaintenanceEnabled) return;

            if (topmostMaintenanceTimer == null)
            {
                topmostMaintenanceTimer = new DispatcherTimer();
                topmostMaintenanceTimer.Interval = TimeSpan.FromMilliseconds(500); // 每500ms检查一次
                topmostMaintenanceTimer.Tick += TopmostMaintenanceTimer_Tick;
            }

            topmostMaintenanceTimer.Start();
            isTopmostMaintenanceEnabled = true;
            LogHelper.WriteLogToFile("启动置顶维护定时器", LogHelper.LogType.Trace);
        }

        /// <summary>
        /// 停止置顶维护定时器
        /// </summary>
        private void StopTopmostMaintenance()
        {
            if (topmostMaintenanceTimer != null && isTopmostMaintenanceEnabled)
            {
                topmostMaintenanceTimer.Stop();
                isTopmostMaintenanceEnabled = false;
                LogHelper.WriteLogToFile("停止置顶维护定时器", LogHelper.LogType.Trace);
            }
        }

        public void PauseTopmostMaintenance()
        {
            if (topmostMaintenanceTimer != null && isTopmostMaintenanceEnabled)
            {
                topmostMaintenanceTimer.Stop();
            }
        }

        public void ResumeTopmostMaintenance()
        {
            if (Settings.Advanced.IsAlwaysOnTop &&
                Settings.Advanced.IsNoFocusMode &&
                !Settings.Advanced.EnableUIAccessTopMost)
            {
                if (topmostMaintenanceTimer != null && !isTopmostMaintenanceEnabled)
                {
                    topmostMaintenanceTimer.Start();
                    isTopmostMaintenanceEnabled = true;
                }
            }
        }

        /// <summary>
        /// 置顶维护定时器事件
        /// </summary>
        private void TopmostMaintenanceTimer_Tick(object sender, EventArgs e)
        {
            try
            {
                if (Settings.Advanced.EnableUIAccessTopMost)
                {
                    StopTopmostMaintenance();
                    return;
                }

                if (!Settings.Advanced.IsAlwaysOnTop || !Settings.Advanced.IsNoFocusMode)
                {
                    StopTopmostMaintenance();
                    return;
                }

                var hwnd = new WindowInteropHelper(this).Handle;
                if (hwnd == IntPtr.Zero) return;

                // 检查窗口是否仍然可见且不是最小化状态
                if (!IsWindow(hwnd) || !IsWindowVisible(hwnd) || IsIconic(hwnd))
                {
                    return;
                }

                // 检查是否有子窗口在前景
                var foregroundWindow = GetForegroundWindow();
                if (foregroundWindow != hwnd)
                {
                    // 检查前景窗口是否是当前应用程序的子窗口
                    var foregroundWindowProcessId = GetWindowThreadProcessId(foregroundWindow, out uint processId);
                    var currentProcessId = GetCurrentProcessId();

                    if (processId == currentProcessId)
                    {
                        // 如果有子窗口在前景，暂停置顶维护
                        return;
                    }

                    // 如果窗口不在最顶层且没有子窗口，重新设置置顶
                    SetWindowPos(hwnd, HWND_TOPMOST, 0, 0, 0, 0,
                        SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE | SWP_SHOWWINDOW | SWP_NOOWNERZORDER);

                    // 确保窗口样式正确
                    int exStyle = GetWindowLong(hwnd, GWL_EXSTYLE);
                    if ((exStyle & WS_EX_TOPMOST) == 0)
                    {
                        SetWindowLong(hwnd, GWL_EXSTYLE, exStyle | WS_EX_TOPMOST);
                    }
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"置顶维护定时器出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 根据窗口置顶设置和当前模式设置窗口的Topmost属性
        /// </summary>
        /// <param name="shouldBeTopmost">当前模式是否需要窗口置顶</param>
        public void SetTopmostBasedOnSettings(bool shouldBeTopmost)
        {
            if (Settings.Advanced.IsAlwaysOnTop)
            {
                // 如果启用了窗口置顶设置，则始终置顶
                Topmost = true;
                ApplyAlwaysOnTop();
            }
            else
            {
                // 如果未启用窗口置顶设置，则根据当前模式决定
                Topmost = shouldBeTopmost;
                if (!shouldBeTopmost)
                {
                    ApplyAlwaysOnTop(); // 确保取消置顶
                }
            }
        }

        private void ToggleSwitchNoFocusMode_Toggled(object sender, RoutedEventArgs e)
        {
            if (!isLoaded) return;
            var toggle = sender as ToggleSwitch;
            Settings.Advanced.IsNoFocusMode = toggle != null && toggle.IsOn;
            SaveSettingsToFile();

            if (isTemporarilyDisablingNoFocusMode)
            {
                isTemporarilyDisablingNoFocusMode = false;
            }

            ApplyNoFocusMode();

            // 如果启用了窗口置顶，需要重新应用置顶设置以处理无焦点模式的变化
            if (Settings.Advanced.IsAlwaysOnTop)
            {
                ApplyAlwaysOnTop();
            }

        }

        private void ToggleSwitchAlwaysOnTop_Toggled(object sender, RoutedEventArgs e)
        {
            if (!isLoaded) return;
            var toggle = sender as ToggleSwitch;
            Settings.Advanced.IsAlwaysOnTop = toggle != null && toggle.IsOn;
            SaveSettingsToFile();
            ApplyAlwaysOnTop();
            UpdateUIAccessTopMostVisibility();
        }

        private void ToggleSwitchUIAccessTopMost_Toggled(object sender, RoutedEventArgs e)
        {
            if (!isLoaded) return;
            var toggle = sender as ToggleSwitch;
            bool newValue = toggle != null && toggle.IsOn;

            Settings.Advanced.EnableUIAccessTopMost = newValue;
            SaveSettingsToFile();
            ApplyUIAccessTopMost();

            App.IsUIAccessTopMostEnabled = newValue;

        }

        private void Window_Activated(object sender, EventArgs e)
        {
            // 窗口激活时，如果启用了置顶功能，重新应用置顶设置
            if (Settings.Advanced.IsAlwaysOnTop)
            {
                // 使用Dispatcher.BeginInvoke确保在UI线程上执行
                Dispatcher.BeginInvoke(new Action(() =>
                {
                    ApplyAlwaysOnTop();
                }), DispatcherPriority.Loaded);
            }
        }

        /// <summary>
        /// 窗口失去焦点时的处理
        /// </summary>
        private void Window_Deactivated(object sender, EventArgs e)
        {
            // 窗口失去焦点时，如果启用了置顶功能且处于无焦点模式，重新应用置顶设置
            if (Settings.Advanced.IsAlwaysOnTop && Settings.Advanced.IsNoFocusMode)
            {
                // 使用Dispatcher.BeginInvoke确保在UI线程上执行
                Dispatcher.BeginInvoke(new Action(() =>
                {
                    ApplyAlwaysOnTop();
                }), DispatcherPriority.Loaded);
            }
        }



        #region 全局快捷键管理
        /// <summary>
        /// 初始化墨迹渐隐管理器
        /// </summary>
        private void InitializeInkFadeManager()
        {
            try
            {
                // 确保墨迹渐隐管理器已初始化
                if (_inkFadeManager == null)
                {
                    _inkFadeManager = new InkFadeManager(this);
                }

                // 同步设置状态
                _inkFadeManager.IsEnabled = Settings.Canvas.EnableInkFade;
                _inkFadeManager.UpdateFadeTime(Settings.Canvas.InkFadeTime);

                LogHelper.WriteLogToFile("墨迹渐隐管理器已初始化", LogHelper.LogType.Event);
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"初始化墨迹渐隐管理器时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 初始化全局快捷键管理器
        /// </summary>
        private void InitializeGlobalHotkeyManager()
        {
            try
            {
                _globalHotkeyManager = new GlobalHotkeyManager(this);
                // 启动时加载快捷键，但默认为鼠标模式，禁用快捷键以放行键盘操作
                _globalHotkeyManager.EnableHotkeyRegistration();
                // 启动时默认为鼠标模式，禁用快捷键
                _globalHotkeyManager.UpdateHotkeyStateForToolMode(true);
                LogHelper.WriteLogToFile("全局快捷键管理器已初始化，启动时默认为鼠标模式并禁用快捷键", LogHelper.LogType.Event);
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"初始化全局快捷键管理器时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 打开快捷键设置窗口
        /// </summary>
        private void OpenHotkeySettingsWindow()
        {
            try
            {
                if (_globalHotkeyManager == null)
                {
                    MessageBox.Show("快捷键管理器尚未初始化，请稍后重试。", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                    return;
                }

                // 暂时隐藏设置面板
                BorderSettings.Visibility = Visibility.Hidden;
                BorderSettingsMask.Visibility = Visibility.Hidden;

                // 创建快捷键设置窗口
                var hotkeySettingsWindow = new HotkeySettingsWindow(this, _globalHotkeyManager);

                // 设置窗口关闭事件，用于在快捷键设置窗口关闭后恢复设置面板
                hotkeySettingsWindow.Closed += (s, e) =>
                {
                    // 恢复设置面板显示
                    BorderSettings.Visibility = Visibility.Visible;
                    BorderSettingsMask.Visibility = Visibility.Visible;
                };

                // 显示快捷键设置窗口
                hotkeySettingsWindow.ShowDialog();
            }
            catch (Exception ex)
            {
                // 确保在发生错误时也恢复设置面板显示
                BorderSettings.Visibility = Visibility.Visible;
                BorderSettingsMask.Visibility = Visibility.Visible;

                LogHelper.WriteLogToFile($"打开快捷键设置窗口时出错: {ex.Message}", LogHelper.LogType.Error);
                MessageBox.Show($"打开快捷键设置窗口时出错: {ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }
        #endregion

        #region 墨迹渐隐功能
        /// <summary>
        /// 墨迹渐隐开关切换事件处理
        /// </summary>
        private void ToggleSwitchEnableInkFade_Toggled(object sender, RoutedEventArgs e)
        {
            try
            {
                Settings.Canvas.EnableInkFade = ToggleSwitchEnableInkFade.IsOn;
                _inkFadeManager.IsEnabled = Settings.Canvas.EnableInkFade;

                // 同步批注子面板中的开关状态
                if (ToggleSwitchInkFadeInPanel != null)
                {
                    ToggleSwitchInkFadeInPanel.IsOn = Settings.Canvas.EnableInkFade;
                }

                // 同步普通画笔面板中的开关状态
                if (ToggleSwitchInkFadeInPanel2 != null)
                {
                    ToggleSwitchInkFadeInPanel2.IsOn = Settings.Canvas.EnableInkFade;
                }

                LogHelper.WriteLogToFile($"墨迹渐隐功能已{(Settings.Canvas.EnableInkFade ? "启用" : "禁用")}", LogHelper.LogType.Event);
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"切换墨迹渐隐功能时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 墨迹渐隐时间滑块值改变事件处理
        /// </summary>
        private void InkFadeTimeSlider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
        {
            try
            {
                Settings.Canvas.InkFadeTime = (int)e.NewValue;
                if (_inkFadeManager != null)
                {
                    _inkFadeManager.UpdateFadeTime(Settings.Canvas.InkFadeTime);
                }
                LogHelper.WriteLogToFile($"墨迹渐隐时间已更新为 {Settings.Canvas.InkFadeTime}ms", LogHelper.LogType.Event);
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"更新墨迹渐隐时间时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }



        /// <summary>
        /// 批注子面板中墨迹渐隐开关切换事件处理
        /// </summary>
        private void ToggleSwitchInkFadeInPanel_Toggled(object sender, RoutedEventArgs e)
        {
            try
            {
                Settings.Canvas.EnableInkFade = ToggleSwitchInkFadeInPanel.IsOn;
                _inkFadeManager.IsEnabled = Settings.Canvas.EnableInkFade;

                // 同步设置面板中的开关状态
                if (ToggleSwitchEnableInkFade != null)
                {
                    ToggleSwitchEnableInkFade.IsOn = Settings.Canvas.EnableInkFade;
                }

                // 同步普通画笔面板中的开关状态
                if (ToggleSwitchInkFadeInPanel2 != null)
                {
                    ToggleSwitchInkFadeInPanel2.IsOn = Settings.Canvas.EnableInkFade;
                }

                LogHelper.WriteLogToFile($"批注子面板中墨迹渐隐功能已{(Settings.Canvas.EnableInkFade ? "启用" : "禁用")}", LogHelper.LogType.Event);
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"批注子面板中切换墨迹渐隐功能时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 在笔工具菜单中隐藏墨迹渐隐控制开关切换事件处理
        /// </summary>
        private void ToggleSwitchHideInkFadeControlInPenMenu_Toggled(object sender, RoutedEventArgs e)
        {
            try
            {
                if (isLoaded)
                {
                    Settings.Canvas.HideInkFadeControlInPenMenu = ToggleSwitchHideInkFadeControlInPenMenu.IsOn;
                    SaveSettingsToFile();
                }

                // 立即更新墨迹渐隐控制开关的可见性
                UpdateInkFadeControlVisibility();

                LogHelper.WriteLogToFile($"在笔工具菜单中隐藏墨迹渐隐控制开关已{(Settings.Canvas.HideInkFadeControlInPenMenu ? "启用" : "禁用")}", LogHelper.LogType.Event);
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"切换在笔工具菜单中隐藏墨迹渐隐控制开关时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        private void ToggleSwitchBrushAutoRestore_Toggled(object sender, RoutedEventArgs e)
        {
            try
            {
                if (!isLoaded) return;
                Settings.Canvas.EnableBrushAutoRestore = ToggleSwitchBrushAutoRestore.IsOn;
                SaveSettingsToFile();

                if (Settings.Canvas.EnableBrushAutoRestore)
                {
                    InitBrushAutoRestoreTimer();
                    ScheduleBrushAutoRestore();
                }
                else
                {
                    if (_brushAutoRestoreTimer != null)
                    {
                        _brushAutoRestoreTimer.Stop();
                    }
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"切换画笔自动恢复功能时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        private void BrushAutoRestoreTimesTextBox_TextChanged(object sender, TextChangedEventArgs e)
        {
            try
            {
                if (!isLoaded) return;
                if (Settings?.Canvas == null) return;

                Settings.Canvas.BrushAutoRestoreTimes = BrushAutoRestoreTimesTextBox.Text ?? string.Empty;
                SaveSettingsToFile();
                if (Settings.Canvas.EnableBrushAutoRestore)
                {
                    ScheduleBrushAutoRestore();
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"BrushAutoRestoreTimes: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        private void ComboBoxBrushAutoRestoreColor_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            try
            {
                if (!isLoaded) return;
                if (Settings?.Canvas == null) return;

                if (ComboBoxBrushAutoRestoreColor.SelectedItem is ComboBoxItem item)
                {
                    string hex = item.Tag as string ?? string.Empty;
                    Settings.Canvas.BrushAutoRestoreColor = hex;
                    SaveSettingsToFile();
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"更新画笔自动恢复目标颜色时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        private void BrushAutoRestoreWidthSlider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
        {
            try
            {
                if (!isLoaded) return;
                if (Settings?.Canvas == null) return;

                Settings.Canvas.BrushAutoRestoreWidth = e.NewValue;
                SaveSettingsToFile();
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"更新画笔自动恢复目标粗细时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        private void BrushAutoRestoreAlphaSlider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
        {
            try
            {
                if (!isLoaded) return;
                if (Settings?.Canvas == null) return;

                Settings.Canvas.BrushAutoRestoreAlpha = (int)e.NewValue;
                SaveSettingsToFile();
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"更新画笔自动恢复目标透明度时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 更新墨迹渐隐控制开关的可见性
        /// </summary>
        private void UpdateInkFadeControlVisibility()
        {
            try
            {
                bool isHidden = Settings.Canvas.HideInkFadeControlInPenMenu;

                // 控制 InkFadeControlPanel1（批注子面板中）的可见性
                if (InkFadeControlPanel1 != null)
                {
                    InkFadeControlPanel1.Visibility = isHidden ? Visibility.Collapsed : Visibility.Visible;
                }

                // 控制 InkFadeControlPanel2（普通画笔面板中）的可见性
                if (InkFadeControlPanel2 != null)
                {
                    InkFadeControlPanel2.Visibility = isHidden ? Visibility.Collapsed : Visibility.Visible;
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"更新墨迹渐隐控制面板可见性时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// PPT放映模式显示手势按钮开关切换事件处理
        /// </summary>
        private void ToggleSwitchShowGestureButtonInSlideShow_Toggled(object sender, RoutedEventArgs e)
        {
            try
            {
                if (!isLoaded) return;
                var toggle = sender as ToggleSwitch;
                Settings.PowerPointSettings.ShowGestureButtonInSlideShow = toggle != null && toggle.IsOn;
                SaveSettingsToFile();

                // 如果当前在PPT放映模式，需要立即更新手势按钮的显示状态
                if (BtnPPTSlideShowEnd.Visibility == Visibility.Visible)
                {
                    UpdateGestureButtonVisibilityInPPTMode();
                }

                LogHelper.WriteLogToFile($"PPT放映模式显示手势按钮已{(Settings.PowerPointSettings.ShowGestureButtonInSlideShow ? "启用" : "禁用")}", LogHelper.LogType.Event);
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"切换PPT放映模式显示手势按钮时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        private void ToggleSwitchEnablePPTTimeCapsule_Toggled(object sender, RoutedEventArgs e)
        {
            try
            {
                if (!isLoaded) return;
                var toggle = sender as ToggleSwitch;
                Settings.PowerPointSettings.EnablePPTTimeCapsule = toggle != null && toggle.IsOn;
                SaveSettingsToFile();

                // 如果当前在PPT放映模式，需要立即更新时间胶囊和快捷面板的显示状态
                if (BtnPPTSlideShowEnd.Visibility == Visibility.Visible)
                {
                    UpdatePPTTimeCapsuleVisibility();
                    UpdatePPTQuickPanelVisibility();
                }

                LogHelper.WriteLogToFile($"PPT时间显示胶囊已{(Settings.PowerPointSettings.EnablePPTTimeCapsule ? "启用" : "禁用")}", LogHelper.LogType.Event);
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"切换PPT时间显示胶囊时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        private void ComboBoxPPTTimeCapsulePosition_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            try
            {
                if (!isLoaded) return;
                if (ComboBoxPPTTimeCapsulePosition != null)
                {
                    Settings.PowerPointSettings.PPTTimeCapsulePosition = ComboBoxPPTTimeCapsulePosition.SelectedIndex;
                    SaveSettingsToFile();

                    // 如果当前在PPT放映模式，需要立即更新时间胶囊的位置
                    if (BtnPPTSlideShowEnd.Visibility == Visibility.Visible)
                    {
                        UpdatePPTTimeCapsulePosition();
                    }

                    LogHelper.WriteLogToFile($"PPT时间胶囊位置已更改为: {ComboBoxPPTTimeCapsulePosition.SelectedIndex}", LogHelper.LogType.Event);
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"更改PPT时间胶囊位置时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 更新PPT模式下手势按钮的显示状态
        /// </summary>
        private void UpdateGestureButtonVisibilityInPPTMode()
        {
            try
            {
                if (Settings.PowerPointSettings.ShowGestureButtonInSlideShow)
                {
                    // 如果启用了PPT放映模式显示手势按钮，则检查是否在批注模式下显示手势按钮
                    CheckEnableTwoFingerGestureBtnVisibility(true);
                }
                else
                {
                    // 如果禁用了PPT放映模式显示手势按钮，则隐藏手势按钮
                    EnableTwoFingerGestureBorder.Visibility = Visibility.Collapsed;
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"更新PPT模式下手势按钮显示状态时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 更新PPT时间胶囊的显示状态
        /// </summary>
        public void UpdatePPTTimeCapsuleVisibility()
        {
            try
            {
                if (PPTTimeCapsuleContainer == null || PPTTimeCapsule == null) return;

                if (Settings.PowerPointSettings.EnablePPTTimeCapsule && 
                    BtnPPTSlideShowEnd.Visibility == Visibility.Visible)
                {
                    PPTTimeCapsuleContainer.Visibility = Visibility.Visible;
                    UpdatePPTTimeCapsulePosition();
                }
                else
                {
                    PPTTimeCapsuleContainer.Visibility = Visibility.Collapsed;
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"更新PPT时间胶囊显示状态时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 更新PPT快捷面板的显示状态
        /// </summary>
        public void UpdatePPTQuickPanelVisibility()
        {
            try
            {
                if (PPTQuickPanelContainer == null || PPTQuickPanel == null) return;

                // 仅在PPT模式下显示
                if (BtnPPTSlideShowEnd.Visibility == Visibility.Visible)
                {
                    PPTQuickPanelContainer.Visibility = Visibility.Visible;
                    PPTQuickPanel?.UpdateVisibility(true);
                }
                else
                {
                    PPTQuickPanelContainer.Visibility = Visibility.Collapsed;
                    PPTQuickPanel?.UpdateVisibility(false);
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"更新PPT快捷面板显示状态时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 更新PPT时间胶囊的位置
        /// </summary>
        private void UpdatePPTTimeCapsulePosition()
        {
            try
            {
                if (PPTTimeCapsuleContainer == null) return;

                int position = Settings.PowerPointSettings.PPTTimeCapsulePosition;
                // 0-左上角, 1-右上角, 2-顶部居中
                switch (position)
                {
                    case 0: // 左上角
                        PPTTimeCapsuleContainer.HorizontalAlignment = HorizontalAlignment.Left;
                        PPTTimeCapsuleContainer.VerticalAlignment = VerticalAlignment.Top;
                        PPTTimeCapsuleContainer.Margin = new Thickness(20, 20, 0, 0);
                        break;
                    case 1: // 右上角
                        PPTTimeCapsuleContainer.HorizontalAlignment = HorizontalAlignment.Right;
                        PPTTimeCapsuleContainer.VerticalAlignment = VerticalAlignment.Top;
                        PPTTimeCapsuleContainer.Margin = new Thickness(0, 20, 20, 0);
                        break;
                    case 2: // 顶部居中
                        PPTTimeCapsuleContainer.HorizontalAlignment = HorizontalAlignment.Center;
                        PPTTimeCapsuleContainer.VerticalAlignment = VerticalAlignment.Top;
                        PPTTimeCapsuleContainer.Margin = new Thickness(0, 20, 0, 0);
                        break;
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"更新PPT时间胶囊位置时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        #endregion


        /// <summary>
        /// 初始化文件关联状态显示
        /// </summary>
        private void InitializeFileAssociationStatus()
        {
            try
            {
                bool isRegistered = FileAssociationManager.IsFileAssociationRegistered();
                if (isRegistered)
                {
                    TextBlockFileAssociationStatus.Text = "✓ .icstk文件关联已注册";
                    TextBlockFileAssociationStatus.Foreground = new SolidColorBrush(Colors.LightGreen);
                }
                else
                {
                    TextBlockFileAssociationStatus.Text = "✗ .icstk文件关联未注册";
                    TextBlockFileAssociationStatus.Foreground = new SolidColorBrush(Colors.LightCoral);
                }
            }
            catch (Exception ex)
            {
                TextBlockFileAssociationStatus.Text = "✗ 检查文件关联状态时出错";
                TextBlockFileAssociationStatus.Foreground = new SolidColorBrush(Colors.LightCoral);
                LogHelper.WriteLogToFile($"初始化文件关联状态显示时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 处理命令行参数中的文件路径
        /// </summary>
        private void HandleCommandLineFileOpen()
        {
            try
            {
                // 检查启动参数中是否有.icstk文件
                string icstkFile = FileAssociationManager.GetIcstkFileFromArgs(App.StartArgs);

                if (!string.IsNullOrEmpty(icstkFile))
                {
                    LogHelper.WriteLogToFile($"检测到命令行参数中的.icstk文件: {icstkFile}", LogHelper.LogType.Event);

                    // 延迟执行，确保UI已完全加载
                    Dispatcher.BeginInvoke(new Action(() =>
                    {
                        try
                        {
                            // 打开文件
                            OpenSingleStrokeFile(icstkFile);
                            ShowNotification($"已加载墨迹文件: {Path.GetFileName(icstkFile)}");
                        }
                        catch (Exception ex)
                        {
                            LogHelper.WriteLogToFile($"打开命令行参数中的文件失败: {ex.Message}", LogHelper.LogType.Error);
                            ShowNotification("打开墨迹文件失败");
                        }
                    }), DispatcherPriority.Loaded);
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"处理命令行文件打开时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 集中管理工具模式切换和快捷键状态更新
        /// 避免在每个工具按钮点击时重复刷新快捷键状态
        /// </summary>
        /// <param name="newMode">新的编辑模式</param>
        /// <param name="additionalActions">可选的额外操作委托</param>
        internal void SetCurrentToolMode(InkCanvasEditingMode newMode, Action additionalActions = null)
        {
            try
            {
                // 如果切换到非橡皮擦模式，禁用橡皮擦覆盖层并重置橡皮擦状态
                if (newMode != InkCanvasEditingMode.EraseByPoint && newMode != InkCanvasEditingMode.EraseByStroke)
                {
                    DisableEraserOverlay();
                }

                // 执行模式切换
                inkCanvas.EditingMode = newMode;

                // 根据模式确定是否为鼠标模式（无工具模式）
                bool isMouseMode = newMode == InkCanvasEditingMode.None;

                // 更新快捷键状态
                if (_globalHotkeyManager != null)
                {
                    _globalHotkeyManager.UpdateHotkeyStateForToolMode(isMouseMode);
                }

                // 在PPT放映模式下，工具模式切换时需要更新手势按钮的显示状态
                if (BtnPPTSlideShowEnd.Visibility == Visibility.Visible)
                {
                    UpdateGestureButtonVisibilityInPPTMode();
                }

                // 执行额外的操作（如果有）
                additionalActions?.Invoke();

            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"设置工具模式时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        #region 滑块触摸支持

        /// <summary>
        /// 为所有滑块控件添加触摸和手写笔事件支持
        /// </summary>
        private void AddTouchSupportToSliders()
        {
            try
            {
                // 获取所有滑块控件并添加触摸支持
                var sliders = new List<Slider>
                {
                    InkFadeTimeSlider,
                    AutoStraightenLineThresholdSlider,
                    LineStraightenSensitivitySlider,
                    LineEndpointSnappingThresholdSlider,
                    ViewboxFloatingBarScaleTransformValueSlider,
                    ViewboxFloatingBarOpacityValueSlider,
                    ViewboxFloatingBarOpacityInPPTValueSlider,
                    PPTButtonLeftPositionValueSlider,
                    PPTButtonRightPositionValueSlider,
                    PPTButtonLBPositionValueSlider,
                    PPTButtonRBPositionValueSlider,
                    PPTLSButtonOpacityValueSlider,
                    PPTRSButtonOpacityValueSlider,
                    PPTLBButtonOpacityValueSlider,
                    PPTRBButtonOpacityValueSlider,
                    TouchMultiplierSlider,
                    NibModeBoundsWidthSlider,
                    FingerModeBoundsWidthSlider,
                    SideControlMinimumAutomationSlider,
                    RandWindowOnceCloseLatencySlider,
                    RandWindowOnceMaxStudentsSlider,
                    TimerVolumeSlider,
                    ProgressiveReminderVolumeSlider,
                    BoardInkWidthSlider,
                    BoardInkAlphaSlider,
                    BoardHighlighterWidthSlider,
                    InkWidthSlider,
                    InkAlphaSlider,
                    HighlighterWidthSlider,
                    MLAvoidanceHistorySlider,
                    MLAvoidanceWeightSlider,
                    BrushAutoRestoreWidthSlider,
                    BrushAutoRestoreAlphaSlider
                };

                foreach (var slider in sliders)
                {
                    if (slider != null)
                    {
                        AddTouchSupportToSlider(slider);
                    }
                }

                LogHelper.WriteLogToFile("已为所有滑块控件添加触摸支持", LogHelper.LogType.Trace);
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"添加滑块触摸支持时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 为单个滑块控件添加触摸和手写笔事件支持
        /// </summary>
        /// <param name="slider">要添加触摸支持的滑块控件</param>
        private void AddTouchSupportToSlider(Slider slider)
        {
            if (slider == null) return;

            // 启用触摸和手写笔支持
            slider.IsManipulationEnabled = true;

            // 添加触摸事件 - 使用更简单直接的方法
            slider.TouchDown += (s, e) => HandleSliderTouch(s, e, slider);
            slider.TouchMove += (s, e) => HandleSliderTouch(s, e, slider);
            slider.TouchUp += (s, e) => HandleSliderTouchEnd(s, e, slider);

            // 添加手写笔事件
            slider.StylusDown += (s, e) => HandleSliderStylus(s, e, slider);
            slider.StylusMove += (s, e) => HandleSliderStylus(s, e, slider);
            slider.StylusUp += (s, e) => HandleSliderStylusEnd(s, e, slider);
        }

        /// <summary>
        /// 处理滑块触摸事件（按下和移动）
        /// </summary>
        private void HandleSliderTouch(object sender, TouchEventArgs e, Slider slider)
        {
            if (slider == null) return;

            // 捕获触摸设备
            if (e.RoutedEvent == TouchDownEvent)
            {
                slider.CaptureTouch(e.TouchDevice);
            }

            // 计算触摸位置对应的滑块值
            var touchPoint = e.GetTouchPoint(slider);

            // 使用更精确的位置计算方法
            UpdateSliderValueFromPositionImproved(slider, touchPoint.Position);

            e.Handled = true;
        }

        /// <summary>
        /// 处理滑块触摸结束事件
        /// </summary>
        private void HandleSliderTouchEnd(object sender, TouchEventArgs e, Slider slider)
        {
            if (slider == null) return;

            // 释放触摸捕获
            slider.ReleaseTouchCapture(e.TouchDevice);

            e.Handled = true;
        }

        /// <summary>
        /// 处理滑块手写笔事件（按下和移动）
        /// </summary>
        private void HandleSliderStylus(object sender, StylusEventArgs e, Slider slider)
        {
            if (slider == null) return;

            // 捕获手写笔设备
            if (e.RoutedEvent == StylusDownEvent)
            {
                slider.CaptureStylus();
            }

            // 计算手写笔位置对应的滑块值
            var stylusPoint = e.GetStylusPoints(slider);
            if (stylusPoint.Count > 0)
            {
                UpdateSliderValueFromPositionImproved(slider, stylusPoint[0].ToPoint());
            }

            e.Handled = true;
        }

        /// <summary>
        /// 处理滑块手写笔结束事件
        /// </summary>
        private void HandleSliderStylusEnd(object sender, StylusEventArgs e, Slider slider)
        {
            if (slider == null) return;

            // 释放手写笔捕获
            slider.ReleaseStylusCapture();

            e.Handled = true;
        }

        /// <summary>
        /// 根据触摸/手写笔位置更新滑块值（改进版本）
        /// </summary>
        /// <param name="slider">滑块控件</param>
        /// <param name="position">触摸/手写笔位置</param>
        private void UpdateSliderValueFromPositionImproved(Slider slider, Point position)
        {
            if (slider == null) return;

            try
            {
                // 获取滑块的轨道元素
                var track = slider.Template.FindName("PART_Track", slider) as Track;
                if (track == null)
                {
                    // 如果找不到轨道，使用简单方法
                    UpdateSliderValueFromPosition(slider, position);
                    return;
                }

                // 获取轨道的实际边界
                var trackBounds = track.TransformToAncestor(slider).TransformBounds(new Rect(0, 0, track.ActualWidth, track.ActualHeight));

                double relativePosition = 0;

                if (slider.Orientation == System.Windows.Controls.Orientation.Horizontal)
                {
                    // 水平滑块
                    if (trackBounds.Width > 0)
                    {
                        // 计算相对于轨道的相对位置
                        var relativeX = position.X - trackBounds.X;
                        relativePosition = Math.Max(0, Math.Min(1, relativeX / trackBounds.Width));
                    }
                }
                else
                {
                    // 垂直滑块
                    if (trackBounds.Height > 0)
                    {
                        // 计算相对于轨道的相对位置
                        var relativeY = position.Y - trackBounds.Y;
                        relativePosition = Math.Max(0, Math.Min(1, relativeY / trackBounds.Height));
                    }
                }

                // 计算新的滑块值
                var newValue = slider.Minimum + relativePosition * (slider.Maximum - slider.Minimum);

                // 如果启用了吸附到刻度，则调整到最近的刻度
                if (slider.IsSnapToTickEnabled && slider.TickFrequency > 0)
                {
                    var tickCount = (int)((slider.Maximum - slider.Minimum) / slider.TickFrequency);
                    var tickIndex = (int)Math.Round(relativePosition * tickCount);
                    newValue = slider.Minimum + tickIndex * slider.TickFrequency;
                }

                // 更新滑块值
                slider.Value = Math.Max(slider.Minimum, Math.Min(slider.Maximum, newValue));
            }
            catch (Exception ex)
            {
                // 如果改进方法失败，回退到简单方法
                UpdateSliderValueFromPosition(slider, position);
                LogHelper.WriteLogToFile($"更新滑块值时出错，使用回退方法: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 根据触摸/手写笔位置更新滑块值（简单版本）
        /// </summary>
        /// <param name="slider">滑块控件</param>
        /// <param name="position">触摸/手写笔位置</param>
        private void UpdateSliderValueFromPosition(Slider slider, Point position)
        {
            if (slider == null) return;

            try
            {
                // 使用更简单直接的方法计算滑块值
                double relativePosition = 0;

                if (slider.Orientation == System.Windows.Controls.Orientation.Horizontal)
                {
                    // 水平滑块 - 使用滑块的实际宽度
                    var sliderWidth = slider.ActualWidth;
                    if (sliderWidth > 0)
                    {
                        // 考虑滑块的边距和拇指大小
                        var thumbSize = 20; // 假设拇指大小约为20像素
                        var effectiveWidth = sliderWidth - thumbSize;
                        var adjustedX = position.X - thumbSize / 2;
                        relativePosition = Math.Max(0, Math.Min(1, adjustedX / effectiveWidth));
                    }
                }
                else
                {
                    // 垂直滑块 - 使用滑块的实际高度
                    var sliderHeight = slider.ActualHeight;
                    if (sliderHeight > 0)
                    {
                        // 考虑滑块的边距和拇指大小
                        var thumbSize = 20; // 假设拇指大小约为20像素
                        var effectiveHeight = sliderHeight - thumbSize;
                        var adjustedY = position.Y - thumbSize / 2;
                        relativePosition = Math.Max(0, Math.Min(1, adjustedY / effectiveHeight));
                    }
                }

                // 计算新的滑块值
                var newValue = slider.Minimum + relativePosition * (slider.Maximum - slider.Minimum);

                // 如果启用了吸附到刻度，则调整到最近的刻度
                if (slider.IsSnapToTickEnabled && slider.TickFrequency > 0)
                {
                    var tickCount = (int)((slider.Maximum - slider.Minimum) / slider.TickFrequency);
                    var tickIndex = (int)Math.Round(relativePosition * tickCount);
                    newValue = slider.Minimum + tickIndex * slider.TickFrequency;
                }

                // 更新滑块值
                slider.Value = Math.Max(slider.Minimum, Math.Min(slider.Maximum, newValue));
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"更新滑块值时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        #endregion

        #region 模式切换相关

        /// <summary>
        /// 模式切换开关事件处理
        /// </summary>
        private void ToggleSwitchMode_Toggled(object sender, RoutedEventArgs e)
        {
            try
            {
                var toggle = sender as ToggleSwitch;
                if (toggle != null)
                {
                    Settings.ModeSettings.IsPPTOnlyMode = toggle.IsOn;

                    // 保存设置到文件
                    SaveSettingsToFile();

                    // 如果切换到仅PPT模式，立即隐藏主窗口
                    if (Settings.ModeSettings.IsPPTOnlyMode)
                    {
                        Hide();
                        LogHelper.WriteLogToFile("已切换到仅PPT模式，主窗口已隐藏", LogHelper.LogType.Event);
                    }
                    else
                    {
                        // 如果切换到正常模式，显示主窗口
                        Show();
                        LogHelper.WriteLogToFile("已切换到正常模式，主窗口已显示", LogHelper.LogType.Event);
                    }
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"切换模式时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 检查是否应该显示主窗口（基于PPT模式和PPT放映状态）
        /// </summary>
        private void CheckMainWindowVisibility()
        {
            try
            {
                if (Settings.ModeSettings.IsPPTOnlyMode)
                {
                    // 仅PPT模式下，只有在PPT放映时才显示
                    bool isInSlideShow = BtnPPTSlideShowEnd.Visibility == Visibility.Visible;
                    if (isInSlideShow && !IsVisible)
                    {
                        Show();
                        LogHelper.WriteLogToFile("PPT放映开始，显示主窗口（仅PPT模式）", LogHelper.LogType.Trace);
                    }
                    else if (!isInSlideShow && IsVisible)
                    {
                        Hide();
                    }
                }
                else
                {
                    // 正常模式下，确保主窗口可见
                    if (!IsVisible)
                    {
                        Show();
                    }
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"检查主窗口可见性时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 切换到白板模式（用于--board参数和IPC命令）
        /// 调用浮动栏上的白板功能
        /// </summary>
        public void SwitchToBoardMode()
        {
            try
            {
                LogHelper.WriteLogToFile("开始切换到白板模式", LogHelper.LogType.Event);

                // 调用浮动栏上的白板功能
                ImageBlackboard_MouseUp(null, null);

                LogHelper.WriteLogToFile("已成功切换到白板模式", LogHelper.LogType.Event);
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"切换到白板模式时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        #endregion

        #region Theme Toggle

        /// <summary>
        /// 主题下拉框选择变化事件
        /// </summary>
        private void ComboBoxTheme_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (!isLoaded) return;

            try
            {
                System.Windows.Controls.ComboBox comboBox = sender as System.Windows.Controls.ComboBox;
                if (comboBox != null)
                {
                    Settings.Appearance.Theme = comboBox.SelectedIndex;

                    // 应用新主题
                    ApplyTheme(comboBox.SelectedIndex);

                    // 保存设置
                    SaveSettingsToFile();

                    // 显示通知
                    string themeName;
                    switch (comboBox.SelectedIndex)
                    {
                        case 0:
                            themeName = "浅色主题";
                            break;
                        case 1:
                            themeName = "深色主题";
                            break;
                        case 2:
                            themeName = "跟随系统";
                            break;
                        default:
                            themeName = "未知主题";
                            break;
                    }

                    ShowNotification($"已切换到{themeName}");
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"切换主题时出错: {ex.Message}", LogHelper.LogType.Error);
                ShowNotification("主题切换失败");
            }
        }

        /// <summary>
        /// 应用指定主题
        /// </summary>
        /// <param name="themeIndex">主题索引：0-浅色，1-深色，2-跟随系统</param>
        private void ApplyTheme(int themeIndex)
        {
            try
            {
                switch (themeIndex)
                {
                    case 0: // 浅色主题
                        SetTheme("Light", true);
                        // 浅色主题下设置浮动栏为完全不透明
                        ViewboxFloatingBar.Opacity = 1.0;
                        break;
                    case 1: // 深色主题
                        SetTheme("Dark", true);
                        // 深色主题下设置浮动栏为完全不透明
                        ViewboxFloatingBar.Opacity = 1.0;
                        break;
                    case 2: // 跟随系统
                        if (IsSystemThemeLight())
                        {
                            SetTheme("Light", true);
                            ViewboxFloatingBar.Opacity = 1.0;
                        }
                        else
                        {
                            SetTheme("Dark", true);
                            ViewboxFloatingBar.Opacity = 1.0;
                        }
                        break;
                }

                // 强制刷新通知框的颜色资源
                RefreshNotificationColors();
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"应用主题时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 刷新通知框的颜色资源
        /// </summary>
        private void RefreshNotificationColors()
        {
            try
            {
                // 强制刷新通知框的背景和前景色
                var border = GridNotifications.Children.OfType<Border>().FirstOrDefault();
                if (border != null)
                {
                    border.Background = (Brush)Application.Current.FindResource("SettingsPageBackground");
                    border.BorderBrush = new SolidColorBrush(Color.FromRgb(185, 28, 28)); // 保持红色边框
                }

                TextBlockNotice.Foreground = (Brush)Application.Current.FindResource("SettingsPageForeground");
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"刷新通知框颜色时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        #endregion

        #region UIA置顶功能

        /// <summary>
        /// 更新UIA置顶开关的可见性
        /// </summary>
        private void UpdateUIAccessTopMostVisibility()
        {
            try
            {
                var visibility = Settings.Advanced.IsAlwaysOnTop ? Visibility.Visible : Visibility.Collapsed;

                if (UIAccessTopMostPanel != null)
                {
                    UIAccessTopMostPanel.Visibility = visibility;
                }

                if (UIAccessTopMostDescription != null)
                {
                    UIAccessTopMostDescription.Visibility = visibility;
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"更新UIA置顶开关可见性时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 应用UIA置顶功能
        /// </summary>
        private void ApplyUIAccessTopMost()
        {
            try
            {
                if (Settings.Advanced.EnableUIAccessTopMost && Settings.Advanced.IsAlwaysOnTop)
                {
                    // 检查是否以管理员权限运行
                    var identity = WindowsIdentity.GetCurrent();
                    var principal = new WindowsPrincipal(identity);

                    if (principal.IsInRole(WindowsBuiltInRole.Administrator))
                    {
                        try
                        {
                            timerKillProcess.Stop();
                            if (App.watchdogProcess != null && !App.watchdogProcess.HasExited)
                            {
                                App.watchdogProcess.Kill();
                                App.watchdogProcess = null;
                            }


                            // 调用UIAccess DLL
                            if (Environment.Is64BitProcess)
                            {
                                PrepareUIAccessX64();
                            }
                            else
                            {
                                PrepareUIAccessX86();
                            }

                            App.StartWatchdogIfNeeded();
                            timerKillProcess.Start();
                        }
                        catch (Exception ex)
                        {
                            LogHelper.WriteLogToFile($"启用UIA置顶功能时出错: {ex.Message}", LogHelper.LogType.Error);
                        }
                    }
                    else
                    {
                        LogHelper.WriteLogToFile("UIA置顶功能需要管理员权限", LogHelper.LogType.Warning);
                    }
                }
                else
                {
                    LogHelper.WriteLogToFile("UIA置顶功能已禁用", LogHelper.LogType.Trace);
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"应用UIA置顶功能时出错: {ex.Message}", LogHelper.LogType.Error);
            }
        }

        /// <summary>
        /// 显示快抽悬浮按钮
        /// </summary>
        private void ShowQuickDrawFloatingButton()
        {
            try
            {
                var quickDrawButton = FindName("QuickDrawFloatingButton") as Controls.QuickDrawFloatingButtonControl;
                if (quickDrawButton == null) return;

                // 检查设置是否启用快抽功能
                if (Settings?.RandSettings?.EnableQuickDraw == true)
                {
                    quickDrawButton.Visibility = Visibility.Visible;
                }
                else
                {
                    quickDrawButton.Visibility = Visibility.Collapsed;
                }
            }
            catch (Exception ex)
            {
                LogHelper.WriteLogToFile($"显示快抽悬浮按钮失败: {ex.Message}", LogHelper.LogType.Error);
            }
        }


        #endregion
    }
}