fix:issue #92 #94

Ink Canvas/Helpers/ForegroundWindowInfo.cs

@@ -2,6 +2,8 @@
 using System.Diagnostics;
 using System.Runtime.InteropServices;
 using System.Text;
+using System.Windows.Forms;
+using System.Drawing;
 
 namespace Ink_Canvas.Helpers
 {
@@ -23,44 +25,6 @@ namespace Ink_Canvas.Helpers
         [DllImport("user32.dll")]
         private static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);
 
-        [DllImport("shell32.dll")]
-        private static extern IntPtr SHAppBarMessage(uint dwMessage, ref APPBARDATA pData);
-
-        [DllImport("user32.dll")]
-        private static extern int SystemParametersInfo(uint uiAction, uint uiParam, IntPtr pvParam, uint fWinIni);
-
-        [DllImport("user32.dll")]
-        private static extern bool GetMonitorInfo(IntPtr hMonitor, ref MONITORINFO lpmi);
-
-        [DllImport("user32.dll")]
-        private static extern IntPtr MonitorFromWindow(IntPtr hwnd, uint dwFlags);
-
-        private const uint ABM_GETTASKBARPOS = 0x00000005;
-        private const uint ABM_GETSTATE = 0x00000004;
-        private const int SPI_GETWORKAREA = 0x0030;
-        private const uint MONITOR_DEFAULTTOPRIMARY = 1;
-        private const int ABS_AUTOHIDE = 0x0000001;
-
-        [StructLayout(LayoutKind.Sequential)]
-        private struct MONITORINFO
-        {
-            public int cbSize;
-            public RECT rcMonitor;
-            public RECT rcWork;
-            public uint dwFlags;
-        }
-
-        [StructLayout(LayoutKind.Sequential)]
-        private struct APPBARDATA
-        {
-            public int cbSize;
-            public IntPtr hWnd;
-            public uint uCallbackMessage;
-            public uint uEdge;
-            public RECT rc;
-            public IntPtr lParam;
-        }
-
         [StructLayout(LayoutKind.Sequential)]
         public struct RECT {
             public int Left;
@@ -72,72 +36,6 @@ namespace Ink_Canvas.Helpers
             public int Height => Bottom - Top;
         }
 
-        /// <summary>
-        /// 获取Windows任务栏的高度（仅计算任务栏，不包括其他应用的停靠栏）
-        /// </summary>
-        /// <param name="screen">当前屏幕</param>
-        /// <param name="dpiScaleY">DPI缩放Y值</param>
-        /// <returns>任务栏高度</returns>
-        public static double GetTaskbarHeight(System.Windows.Forms.Screen screen, double dpiScaleY)
-        {
-            try
-            {
-                // 创建APPBARDATA结构
-                var abd = new APPBARDATA();
-                abd.cbSize = Marshal.SizeOf(abd);
-
-                // 获取任务栏状态
-                IntPtr state = SHAppBarMessage(ABM_GETSTATE, ref abd);
-                bool isAutoHide = (state.ToInt32() & ABS_AUTOHIDE) == ABS_AUTOHIDE;
-
-                // 如果任务栏是自动隐藏的,返回0
-                if (isAutoHide)
-                {
-                    LogHelper.WriteLogToFile("任务栏处于自动隐藏状态", LogHelper.LogType.Info);
-                    return 0;
-                }
-
-                // 获取任务栏信息
-                IntPtr result = SHAppBarMessage(ABM_GETTASKBARPOS, ref abd);
-                if (result != IntPtr.Zero)
-                {
-                    RECT taskbarRect = abd.rc;
-                    System.Drawing.Rectangle screenRect = screen.Bounds;
-                    System.Drawing.Rectangle taskbarRectangle = new System.Drawing.Rectangle(taskbarRect.Left, taskbarRect.Top, taskbarRect.Width, taskbarRect.Height);
-
-                    // 根据任务栏位置计算高度
-                    int taskbarHeight = 0;
-
-                    // 任务栏的uEdge: 0=左, 1=上, 2=右, 3=下
-                    switch (abd.uEdge)
-                    {
-                        case 1: // 上
-                            taskbarHeight = abd.rc.Height;
-                            break;
-                        case 3: // 下
-                            taskbarHeight = abd.rc.Height;
-                            break;
-                        case 0: // 左
-                        case 2: // 右
-                            // 水平任务栏不影响高度
-                            taskbarHeight = 0;
-                            break;
-                    }
-
-                    // 考虑DPI缩放
-                    return taskbarHeight / dpiScaleY;
-                }
-            }
-            catch (Exception ex)
-            {
-                Debug.WriteLine($"获取任务栏高度出错: {ex.Message}");
-                LogHelper.WriteLogToFile($"获取任务栏高度出错: {ex.Message}", LogHelper.LogType.Error);
-            }
-
-            // 如果获取失败，回退到通用方法
-            return (screen.Bounds.Height - screen.WorkingArea.Height) / dpiScaleY;
-        }
-
         public static string WindowTitle() {
             IntPtr foregroundWindowHandle = GetForegroundWindow();
 
@@ -197,5 +95,23 @@ namespace Ink_Canvas.Helpers
                 return "Unknown";
             }
         }
+
+        public static int GetTaskbarHeight(Screen screen, double dpiScaleY)
+        {
+            // 优先用工作区和屏幕区的差值法，兼容多屏
+            int height = 0;
+            if (screen.Bounds.Height > screen.WorkingArea.Height)
+            {
+                // 任务栏在上下
+                height = screen.Bounds.Height - screen.WorkingArea.Height;
+            }
+            else if (screen.Bounds.Width > screen.WorkingArea.Width)
+            {
+                // 任务栏在左右
+                height = screen.Bounds.Width - screen.WorkingArea.Width;
+            }
+            // 考虑DPI缩放
+            return (int)(height / dpiScaleY);
+        }
     }
 }

Ink Canvas/MainWindow_cs/MW_PPT.cs

@@ -949,41 +949,27 @@ namespace Ink_Canvas {
                     LogHelper.WriteLogToFile("幻灯片放映窗口或视图为空", LogHelper.LogType.Warning);
                     return;
                 }
-
                 LogHelper.WriteLogToFile($"PowerPoint Next Slide (Slide {Wn.View.CurrentShowPosition})",
                     LogHelper.LogType.Event);
-                if (Wn.View.CurrentShowPosition == previousSlideID) return;
+                // 先保存旧页墨迹
-                
                 Application.Current.Dispatcher.Invoke(() => {
-                    try {
+                    var ms = new MemoryStream();
-                        var ms = new MemoryStream();
+                    inkCanvas.Strokes.Save(ms);
-                        inkCanvas.Strokes.Save(ms);
+                    ms.Position = 0;
-                        ms.Position = 0;
+                    if (previousSlideID > 0 && previousSlideID < memoryStreams.Length)
                         memoryStreams[previousSlideID] = ms;
-
+                    ClearStrokes(true);
-                        if (inkCanvas.Strokes.Count > Settings.Automation.MinimumAutomationStrokeNumber &&
+                    timeMachine.ClearStrokeHistory();
-                            Settings.PowerPointSettings.IsAutoSaveScreenShotInPowerPoint && !_isPptClickingBtnTurned)
+                    int newPage = Wn.View.CurrentShowPosition;
-                            SaveScreenShot(true, Wn.Presentation.Name + "/" + Wn.View.CurrentShowPosition);
+                    if (newPage > 0 && newPage < memoryStreams.Length &&
-                        _isPptClickingBtnTurned = false;
+                        memoryStreams[newPage] != null && memoryStreams[newPage].Length > 0) {
-
+                        memoryStreams[newPage].Position = 0;
-                        ClearStrokes(true);
+                        inkCanvas.Strokes.Add(new StrokeCollection(memoryStreams[newPage]));
-                        timeMachine.ClearStrokeHistory();
-
-                        if (memoryStreams[Wn.View.CurrentShowPosition] != null &&
-                            memoryStreams[Wn.View.CurrentShowPosition].Length > 0) {
-                            memoryStreams[Wn.View.CurrentShowPosition].Position = 0;
-                            inkCanvas.Strokes.Add(new StrokeCollection(memoryStreams[Wn.View.CurrentShowPosition]));
-                        }
-
-                        PPTBtnPageNow.Text = $"{Wn.View.CurrentShowPosition}";
-                        PPTBtnPageTotal.Text = $"/ {Wn.Presentation.Slides.Count}";
-                    }
-                    catch (Exception ex) {
-                        LogHelper.WriteLogToFile($"处理幻灯片切换时出错: {ex.ToString()}", LogHelper.LogType.Error);
                     }
+                    PPTBtnPageNow.Text = $"{Wn.View.CurrentShowPosition}";
+                    PPTBtnPageTotal.Text = $"/ {Wn.Presentation.Slides.Count}";
+                    previousSlideID = newPage; // 最后赋值，确保索引同步
                 });
-                
-                previousSlideID = Wn.View.CurrentShowPosition;
             }
             catch (Exception ex) {
                 LogHelper.WriteLogToFile($"幻灯片切换事件处理失败: {ex.ToString()}", LogHelper.LogType.Error);
@@ -993,179 +979,95 @@ namespace Ink_Canvas {
         private bool _isPptClickingBtnTurned = false;
 
        private void BtnPPTSlidesUp_Click(object sender, RoutedEventArgs e) {
-            if (currentMode == 1) {
-                GridBackgroundCover.Visibility = Visibility.Collapsed;
-                AnimationsHelper.HideWithSlideAndFade(BlackboardLeftSide);
-                AnimationsHelper.HideWithSlideAndFade(BlackboardCenterSide);
-                AnimationsHelper.HideWithSlideAndFade(BlackboardRightSide);
-                currentMode = 0;
-            }
-
-            // 切换前同步保存墨迹
             Application.Current.Dispatcher.Invoke(() => {
+                // 切换前同步保存墨迹
                 SaveCurrentSlideInkStrokes();
-            });
+                _isPptClickingBtnTurned = true;
-
+                // 添加安全检查
-            _isPptClickingBtnTurned = true;
+                if (pptApplication == null)
-
-            // 添加安全检查
-            if (pptApplication == null)
-            {
-                LogHelper.WriteLogToFile("PPT应用程序为空，无法执行上一页操作", LogHelper.LogType.Warning);
-                return;
-            }
-
-            try
-            {
-                // 检查SlideShowWindows是否存在且有效
-                if (pptApplication.SlideShowWindows == null || pptApplication.SlideShowWindows.Count == 0)
                 {
-                    LogHelper.WriteLogToFile("PPT放映窗口不存在，无法执行上一页操作", LogHelper.LogType.Warning);
+                    LogHelper.WriteLogToFile("PPT应用程序为空，无法执行上一页操作", LogHelper.LogType.Warning);
                     return;
                 }
-
+                try
-                // 安全访问当前幻灯片信息
-                if (pptApplication.SlideShowWindows.Count >= 1)
                 {
-                    var slideShowWindow = pptApplication.SlideShowWindows[1];
+                    // 检查SlideShowWindows是否存在且有效
-                    if (slideShowWindow != null && slideShowWindow.View != null)
+                    if (pptApplication.SlideShowWindows == null || pptApplication.SlideShowWindows.Count == 0)
                     {
-                        if (inkCanvas.Strokes.Count > Settings.Automation.MinimumAutomationStrokeNumber &&
+                        LogHelper.WriteLogToFile("PPT放映窗口不存在，无法执行上一页操作", LogHelper.LogType.Warning);
-                            Settings.PowerPointSettings.IsAutoSaveScreenShotInPowerPoint)
+                        return;
-                            SaveScreenShot(true,
+                    }
-                                slideShowWindow.Presentation.Name + "/" +
+                    // 安全访问当前幻灯片信息
-                                slideShowWindow.View.CurrentShowPosition);
+                    if (pptApplication.SlideShowWindows.Count >= 1)
+                    {
+                        var slideShowWindow = pptApplication.SlideShowWindows[1];
+                        if (slideShowWindow != null && slideShowWindow.View != null)
+                        {
+                            if (inkCanvas.Strokes.Count > Settings.Automation.MinimumAutomationStrokeNumber &&
+                                Settings.PowerPointSettings.IsAutoSaveScreenShotInPowerPoint)
+                                SaveScreenShot(true,
+                                    slideShowWindow.Presentation.Name + "/" +
+                                    slideShowWindow.View.CurrentShowPosition);
+                            slideShowWindow.Activate();
+                            slideShowWindow.View.Previous();
+                        }
                     }
                 }
-
+                catch (Exception ex) {
-                new Thread(new ThreadStart(() => {
+                    LogHelper.WriteLogToFile($"PPT上一页操作异常: {ex.ToString()}", LogHelper.LogType.Error);
-                    try {
+                    StackPanelPPTControls.Visibility = Visibility.Collapsed;
-                        // 安全访问SlideShowWindows[1]
+                    LeftBottomPanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                        if (pptApplication.SlideShowWindows.Count >= 1)
+                    RightBottomPanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                        {
+                    LeftSidePanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                            var slideShowWindow = pptApplication.SlideShowWindows[1];
+                    RightSidePanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                            if (slideShowWindow != null)
+                }
-                            {
+            });
-                                slideShowWindow.Activate();
-                            }
-                        }
-                    }
-                    catch (Exception ex) {
-                        LogHelper.WriteLogToFile($"激活PPT放映窗口失败: {ex.ToString()}", LogHelper.LogType.Error);
-                    }
-
-                    try {
-                        // 安全访问SlideShowWindows[1]
-                        if (pptApplication.SlideShowWindows.Count >= 1)
-                        {
-                            var slideShowWindow = pptApplication.SlideShowWindows[1];
-                            if (slideShowWindow != null && slideShowWindow.View != null)
-                            {
-                                slideShowWindow.View.Previous();
-                            }
-                        }
-                    }
-                    catch (Exception ex) {
-                        LogHelper.WriteLogToFile($"PPT上一页操作失败: {ex.ToString()}", LogHelper.LogType.Error);
-                    } // Without this catch{}, app will crash when click the pre-page button in the fir page in some special env.
-                })).Start();
-            }
-            catch (Exception ex) {
-                LogHelper.WriteLogToFile($"PPT上一页操作异常: {ex.ToString()}", LogHelper.LogType.Error);
-                StackPanelPPTControls.Visibility = Visibility.Collapsed;
-                LeftBottomPanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                RightBottomPanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                LeftSidePanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                RightSidePanelForPPTNavigation.Visibility = Visibility.Collapsed;
-            }
         }
 
         private void BtnPPTSlidesDown_Click(object sender, RoutedEventArgs e) {
-            if (currentMode == 1) {
-                GridBackgroundCover.Visibility = Visibility.Collapsed;
-                AnimationsHelper.HideWithSlideAndFade(BlackboardLeftSide);
-                AnimationsHelper.HideWithSlideAndFade(BlackboardCenterSide);
-                AnimationsHelper.HideWithSlideAndFade(BlackboardRightSide);
-                currentMode = 0;
-            }
-
-            // 切换前同步保存墨迹
             Application.Current.Dispatcher.Invoke(() => {
+                // 切换前同步保存墨迹
                 SaveCurrentSlideInkStrokes();
-            });
+                _isPptClickingBtnTurned = true;
-
+                // 添加安全检查
-            _isPptClickingBtnTurned = true;
+                if (pptApplication == null)
-            
-            // 添加安全检查
-            if (pptApplication == null)
-            {
-                LogHelper.WriteLogToFile("PPT应用程序为空，无法执行下一页操作", LogHelper.LogType.Warning);
-                return;
-            }
-
-            try
-            {
-                // 检查SlideShowWindows是否存在且有效
-                if (pptApplication.SlideShowWindows == null || pptApplication.SlideShowWindows.Count == 0)
                 {
-                    LogHelper.WriteLogToFile("PPT放映窗口不存在，无法执行下一页操作", LogHelper.LogType.Warning);
+                    LogHelper.WriteLogToFile("PPT应用程序为空，无法执行下一页操作", LogHelper.LogType.Warning);
                     return;
                 }
-
+                try
-                // 安全访问当前幻灯片信息
-                if (pptApplication.SlideShowWindows.Count >= 1)
                 {
-                    var slideShowWindow = pptApplication.SlideShowWindows[1];
+                    // 检查SlideShowWindows是否存在且有效
-                    if (slideShowWindow != null && slideShowWindow.View != null)
+                    if (pptApplication.SlideShowWindows == null || pptApplication.SlideShowWindows.Count == 0)
                     {
-                        if (inkCanvas.Strokes.Count > Settings.Automation.MinimumAutomationStrokeNumber &&
+                        LogHelper.WriteLogToFile("PPT放映窗口不存在，无法执行下一页操作", LogHelper.LogType.Warning);
-                            Settings.PowerPointSettings.IsAutoSaveScreenShotInPowerPoint)
+                        return;
-                            SaveScreenShot(true,
+                    }
-                                slideShowWindow.Presentation.Name + "/" +
+                    // 安全访问当前幻灯片信息
-                                slideShowWindow.View.CurrentShowPosition);
+                    if (pptApplication.SlideShowWindows.Count >= 1)
+                    {
+                        var slideShowWindow = pptApplication.SlideShowWindows[1];
+                        if (slideShowWindow != null && slideShowWindow.View != null)
+                        {
+                            if (inkCanvas.Strokes.Count > Settings.Automation.MinimumAutomationStrokeNumber &&
+                                Settings.PowerPointSettings.IsAutoSaveScreenShotInPowerPoint)
+                                SaveScreenShot(true,
+                                    slideShowWindow.Presentation.Name + "/" +
+                                    slideShowWindow.View.CurrentShowPosition);
+                            slideShowWindow.Activate();
+                            slideShowWindow.View.Next();
+                        }
                     }
                 }
-                
+                catch (Exception ex) {
-                new Thread(new ThreadStart(() => {
+                    LogHelper.WriteLogToFile($"PPT下一页操作异常: {ex.ToString()}", LogHelper.LogType.Error);
-                    try {
+                    StackPanelPPTControls.Visibility = Visibility.Collapsed;
-                        // 安全访问SlideShowWindows[1]
+                    LeftBottomPanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                        if (pptApplication.SlideShowWindows.Count >= 1)
+                    RightBottomPanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                        {
+                    LeftSidePanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                            var slideShowWindow = pptApplication.SlideShowWindows[1];
+                    RightSidePanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                            if (slideShowWindow != null)
+                }
-                            {
+            });
-                                slideShowWindow.Activate();
-                            }
-                        }
-                    }
-                    catch (Exception ex) {
-                        LogHelper.WriteLogToFile($"激活PPT放映窗口失败: {ex.ToString()}", LogHelper.LogType.Error);
-                    }
-
-                    try {
-                        // 安全访问SlideShowWindows[1]
-                        if (pptApplication.SlideShowWindows.Count >= 1)
-                        {
-                            var slideShowWindow = pptApplication.SlideShowWindows[1];
-                            if (slideShowWindow != null && slideShowWindow.View != null)
-                            {
-                                slideShowWindow.View.Next();
-                            }
-                        }
-                    }
-                    catch (Exception ex) {
-                        LogHelper.WriteLogToFile($"PPT下一页操作失败: {ex.ToString()}", LogHelper.LogType.Error);
-                    }
-                })).Start();
-            }
-            catch (Exception ex) {
-                LogHelper.WriteLogToFile($"PPT下一页操作异常: {ex.ToString()}", LogHelper.LogType.Error);
-                StackPanelPPTControls.Visibility = Visibility.Collapsed;
-                LeftBottomPanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                RightBottomPanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                LeftSidePanelForPPTNavigation.Visibility = Visibility.Collapsed;
-                RightSidePanelForPPTNavigation.Visibility = Visibility.Collapsed;
-            }
         }
 
         private async void PPTNavigationBtn_MouseDown(object sender, MouseButtonEventArgs e)