From 15cb1aa5f2967ca8b39080986f2584c5c21c39dd Mon Sep 17 00:00:00 2001 From: CJKmkp <2564608840@qq.com> Date: Thu, 12 Feb 2026 22:33:04 +0800 Subject: [PATCH] =?UTF-8?q?improve:PPT=E8=81=94=E5=8A=A8?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- Ink Canvas/Helpers/ROTPPTManager.cs | 1086 +++++++++++++++++++++++++++ 1 file changed, 1086 insertions(+) create mode 100644 Ink Canvas/Helpers/ROTPPTManager.cs diff --git a/Ink Canvas/Helpers/ROTPPTManager.cs b/Ink Canvas/Helpers/ROTPPTManager.cs new file mode 100644 index 00000000..c57d11a2 --- /dev/null +++ b/Ink Canvas/Helpers/ROTPPTManager.cs @@ -0,0 +1,1086 @@ +using Microsoft.Office.Interop.PowerPoint; +using System; +using System.Runtime.InteropServices; +using System.Timers; +using System.Windows.Threading; +using Application = System.Windows.Application; +using Timer = System.Timers.Timer; + +namespace Ink_Canvas.Helpers +{ + public class ROTPPTManager : IPPTLinkManager + { + #region Events + public event Action SlideShowBegin; + public event Action SlideShowNextSlide; + public event Action SlideShowEnd; + public event Action PresentationOpen; + public event Action PresentationClose; + public event Action PPTConnectionChanged; + public event Action SlideShowStateChanged; + #endregion + + #region Properties + /// + /// 当前 PowerPoint 应用程序实例（通过 ROT 获取）。 + /// + public object PPTApplication => _pptApplication; + + public bool IsConnected + { + get + { + try + { + if (_pptApplication == null) return false; + if (!Marshal.IsComObject(_pptApplication)) return false; + + // 访问简单属性验证 COM 是否仍然有效 + var _ = _pptApplication.Name; + return true; + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x8001010E || hr == 0x80004005 || hr == 0x800706B5) + { + return false; + } + return false; + } + catch + { + return false; + } + } + } + + public bool IsInSlideShow + { + get + { + object slideShowWindows = null; + object slideShowWindow = null; + object view = null; + try + { + if (_pptApplication == null || !Marshal.IsComObject(_pptApplication)) return false; + + slideShowWindows = _pptApplication.SlideShowWindows; + if (slideShowWindows == null) return false; + + dynamic ssw = slideShowWindows; + if (ssw.Count == 0) return false; + + try + { + slideShowWindow = ssw[1]; + if (slideShowWindow == null) return false; + + dynamic sswObj = slideShowWindow; + view = sswObj.View; + if (view == null) return false; + + return true; + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x8001010E || hr == 0x80004005) + { + DisconnectFromPPT(); + } + return false; + } + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x8001010E || hr == 0x80004005) + { + DisconnectFromPPT(); + } + LogHelper.WriteLogToFile($"检查 ROT PPT 放映状态失败: {comEx.Message} (HR: 0x{hr:X8})", LogHelper.LogType.Warning); + return false; + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"检查 ROT PPT 放映状态时发生意外错误: {ex}", LogHelper.LogType.Warning); + return false; + } + finally + { + SafeReleaseComObject(view); + SafeReleaseComObject(slideShowWindow); + SafeReleaseComObject(slideShowWindows); + } + } + } + + public bool IsSupportWPS { get; set; } = false; + + public int SlidesCount { get; private set; } + #endregion + + #region Private Fields + private Microsoft.Office.Interop.PowerPoint.Application _pptApplication; + private Presentation _currentPresentation; + private Slides _currentSlides; + private Slide _currentSlide; + + private Timer _connectionCheckTimer; + private Timer _slideShowStateCheckTimer; + + private bool _isModuleUnloading; + private bool _lastSlideShowState; + private readonly object _lockObject = new object(); + private bool _disposed; + #endregion + + #region Lifecycle + public ROTPPTManager() + { + InitializeTimers(); + } + + private void InitializeTimers() + { + _connectionCheckTimer = new Timer(500); + _connectionCheckTimer.Elapsed += OnConnectionCheckTimerElapsed; + _connectionCheckTimer.AutoReset = true; + + _slideShowStateCheckTimer = new Timer(1000); + _slideShowStateCheckTimer.Elapsed += OnSlideShowStateCheckTimerElapsed; + _slideShowStateCheckTimer.AutoReset = true; + } + + public void StartMonitoring() + { + if (_disposed) return; + + _connectionCheckTimer?.Start(); + _slideShowStateCheckTimer?.Start(); + LogHelper.WriteLogToFile("ROTPPTManager 监控已启动", LogHelper.LogType.Trace); + } + + public void StopMonitoring() + { + _connectionCheckTimer?.Stop(); + _slideShowStateCheckTimer?.Stop(); + DisconnectFromPPT(); + LogHelper.WriteLogToFile("ROTPPTManager 监控已停止", LogHelper.LogType.Trace); + } + #endregion + + #region Connection Management + private void OnConnectionCheckTimerElapsed(object sender, ElapsedEventArgs e) + { + try + { + if (!_isModuleUnloading) + { + CheckAndConnectToPPTViaRot(); + } + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 连接检查失败: {ex}", LogHelper.LogType.Error); + } + } + + private void OnSlideShowStateCheckTimerElapsed(object sender, ElapsedEventArgs e) + { + try + { + if (!_isModuleUnloading && IsConnected) + { + CheckSlideShowState(); + } + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 放映状态检查失败: {ex}", LogHelper.LogType.Error); + } + } + + /// + /// 使用 ROT 尝试连接到 PowerPoint。 + /// + private void CheckAndConnectToPPTViaRot() + { + if (_isModuleUnloading) return; + + lock (_lockObject) + { + try + { + if (_isModuleUnloading) return; + + var pptApp = PPTROTConnectionHelper.TryConnectViaROT(IsSupportWPS); + + if (pptApp != null && _pptApplication == null) + { + // 从未连接 -> 连接 + ConnectToPPT(pptApp); + } + else if (pptApp == null && _pptApplication != null) + { + // 原来有，现在没有 -> 断开 + DisconnectFromPPT(); + } + else if (pptApp != null && _pptApplication != null) + { + // 已连接，检查是否切换到了另一份 PPT + if (!PPTROTConnectionHelper.AreComObjectsEqual(_pptApplication, pptApp)) + { + DisconnectFromPPT(); + ConnectToPPT(pptApp); + } + else + { + // 相同实例，释放多余引用 + PPTROTConnectionHelper.SafeReleaseComObject(pptApp); + } + } + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 连接检查异常: {ex}", LogHelper.LogType.Error); + if (_pptApplication != null) + { + DisconnectFromPPT(); + } + } + } + } + + private void CheckSlideShowState() + { + try + { + if (!IsConnected) return; + + var currentSlideShowState = IsInSlideShow; + if (currentSlideShowState != _lastSlideShowState) + { + _lastSlideShowState = currentSlideShowState; + SlideShowStateChanged?.Invoke(currentSlideShowState); + } + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 检查 PPT 放映状态异常: {ex}", LogHelper.LogType.Error); + } + } + + private void ConnectToPPT(Microsoft.Office.Interop.PowerPoint.Application pptApp) + { + try + { + _pptApplication = pptApp; + + // 在 UI 线程上注册事件 + Application.Current?.Dispatcher?.Invoke(() => + { + try + { + _pptApplication.PresentationOpen += OnPresentationOpenInternal; + _pptApplication.PresentationClose += OnPresentationCloseInternal; + _pptApplication.SlideShowBegin += OnSlideShowBeginInternal; + _pptApplication.SlideShowNextSlide += OnSlideShowNextSlideInternal; + _pptApplication.SlideShowEnd += OnSlideShowEndInternal; + + LogHelper.WriteLogToFile("ROTPPTManager 已注册 PPT 事件", LogHelper.LogType.Trace); + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 注册 PPT 事件失败: {ex}", LogHelper.LogType.Error); + throw; + } + }, DispatcherPriority.Normal); + + UpdateCurrentPresentationInfo(); + + // 连接成功后暂停频繁的连接检查，由状态定时器维持 + _connectionCheckTimer?.Stop(); + + PPTConnectionChanged?.Invoke(true); + LogHelper.WriteLogToFile("ROTPPTManager 成功连接到 PPT 应用程序", LogHelper.LogType.Event); + + if (IsInSlideShow && _pptApplication.SlideShowWindows.Count > 0) + { + OnSlideShowBeginInternal(_pptApplication.SlideShowWindows[1]); + } + else if (_currentPresentation != null) + { + OnPresentationOpenInternal(_currentPresentation); + } + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 连接 PPT 应用程序失败: {ex}", LogHelper.LogType.Error); + _pptApplication = null; + } + } + + private void DisconnectFromPPT() + { + try + { + if (_pptApplication != null) + { + try + { + if (Marshal.IsComObject(_pptApplication)) + { + Application.Current?.Dispatcher?.Invoke(() => + { + try + { + _pptApplication.PresentationOpen -= OnPresentationOpenInternal; + _pptApplication.PresentationClose -= OnPresentationCloseInternal; + _pptApplication.SlideShowBegin -= OnSlideShowBeginInternal; + _pptApplication.SlideShowNextSlide -= OnSlideShowNextSlideInternal; + _pptApplication.SlideShowEnd -= OnSlideShowEndInternal; + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 取消 PPT 事件注册异常: {ex}", LogHelper.LogType.Warning); + LogHelper.WriteLogToFile(ex.ToString(), LogHelper.LogType.Trace); + } + }, DispatcherPriority.Normal); + } + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 取消 PPT 事件注册失败: {ex}", LogHelper.LogType.Warning); + } + + SafeReleaseComObject(_currentSlide); + SafeReleaseComObject(_currentSlides); + SafeReleaseComObject(_currentPresentation); + + if (Marshal.IsComObject(_pptApplication)) + { + try + { + Marshal.FinalReleaseComObject(_pptApplication); + } + catch + { + try + { + int refCount = Marshal.ReleaseComObject(_pptApplication); + while (refCount > 0) + { + refCount = Marshal.ReleaseComObject(_pptApplication); + } + } + catch { } + } + } + } + + _pptApplication = null; + _currentPresentation = null; + _currentSlides = null; + _currentSlide = null; + SlidesCount = 0; + + GC.Collect(); + GC.WaitForPendingFinalizers(); + GC.Collect(); + + _isModuleUnloading = true; + _connectionCheckTimer?.Stop(); + _slideShowStateCheckTimer?.Stop(); + + PPTConnectionChanged?.Invoke(false); + + LogHelper.WriteLogToFile("ROTPPTManager 已断开 PPT 连接", LogHelper.LogType.Event); + + // 一段时间后重新尝试连接 + System.Threading.ThreadPool.QueueUserWorkItem(_ => + { + try + { + System.Threading.Thread.Sleep(2000); + + GC.Collect(); + GC.WaitForPendingFinalizers(); + GC.Collect(); + + System.Threading.Thread.Sleep(1000); + + _isModuleUnloading = false; + _connectionCheckTimer?.Start(); + _slideShowStateCheckTimer?.Start(); + + LogHelper.WriteLogToFile("ROTPPTManager 联动模块已重新进入监控状态", LogHelper.LogType.Trace); + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 重新进入监控状态失败: {ex}", LogHelper.LogType.Error); + _isModuleUnloading = false; + } + }); + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 断开 PPT 连接失败: {ex}", LogHelper.LogType.Error); + _isModuleUnloading = false; + } + } + #endregion + + #region PPT Event Handlers + private void OnPresentationOpenInternal(Presentation pres) + { + try + { + _currentPresentation = pres; + _currentSlides = pres.Slides; + _currentSlide = null; + SlidesCount = _currentSlides?.Count ?? 0; + + PresentationOpen?.Invoke(pres); + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 处理演示文稿打开事件失败: {ex}", LogHelper.LogType.Error); + } + } + + private void OnPresentationCloseInternal(Presentation pres) + { + try + { + PresentationClose?.Invoke(pres); + + if (_currentPresentation != null && pres != null && ReferenceEquals(_currentPresentation, pres)) + { + SafeReleaseComObject(_currentSlide); + SafeReleaseComObject(_currentSlides); + SafeReleaseComObject(_currentPresentation); + + _currentPresentation = null; + _currentSlides = null; + _currentSlide = null; + SlidesCount = 0; + } + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x8001010E || hr == 0x80004005 || hr == 0x800706BA || hr == 0x800706BE || hr == 0x80048010) + { + // COM 对象已失效，静默忽略 + } + } + catch (Exception) + { + } + } + + private void OnSlideShowBeginInternal(SlideShowWindow wn) + { + try + { + if (wn?.Presentation != null) + { + _currentPresentation = wn.Presentation; + _currentSlides = _currentPresentation.Slides; + SlidesCount = _currentSlides?.Count ?? 0; + } + + SlideShowBegin?.Invoke(wn); + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 处理放映开始事件失败: {ex}", LogHelper.LogType.Error); + } + } + + private void OnSlideShowNextSlideInternal(SlideShowWindow wn) + { + try + { + if (wn?.View != null) + { + try + { + _currentSlide = wn.View.Slide; + } + catch + { + _currentSlide = null; + } + } + + SlideShowNextSlide?.Invoke(wn); + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 处理放映翻页事件失败: {ex}", LogHelper.LogType.Error); + } + } + + private void OnSlideShowEndInternal(Presentation pres) + { + try + { + SlideShowEnd?.Invoke(pres); + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 处理放映结束事件失败: {ex}", LogHelper.LogType.Error); + } + } + #endregion + + #region IPPTLinkManager Methods + public bool TryStartSlideShow() + { + try + { + if (!IsConnected || _currentPresentation == null || _pptApplication == null) return false; + if (!Marshal.IsComObject(_pptApplication) || !Marshal.IsComObject(_currentPresentation)) return false; + + _currentPresentation.SlideShowSettings.Run(); + return true; + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x8001010E || hr == 0x80004005) + { + DisconnectFromPPT(); + } + LogHelper.WriteLogToFile($"ROTPPTManager 开始幻灯片放映失败: {comEx.Message}", LogHelper.LogType.Error); + return false; + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 开始幻灯片放映失败: {ex}", LogHelper.LogType.Error); + return false; + } + } + + public bool TryEndSlideShow() + { + object slideShowWindows = null; + object slideShowWindow = null; + object view = null; + try + { + if (!IsConnected || _pptApplication == null) return false; + if (!Marshal.IsComObject(_pptApplication)) return false; + + slideShowWindows = _pptApplication.SlideShowWindows; + if (slideShowWindows != null) + { + dynamic ssw = slideShowWindows; + int count = 0; + try + { + count = ssw.Count; + } + catch + { + count = 0; + } + + for (int i = 1; i <= count; i++) + { + try + { + slideShowWindow = ssw[i]; + if (slideShowWindow != null) + { + dynamic sswObj = slideShowWindow; + view = sswObj.View; + if (view != null) + { + dynamic viewObj = view; + viewObj.Exit(); + } + } + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 结束第 {i} 个放映窗口失败: {ex}", LogHelper.LogType.Warning); + } + finally + { + SafeReleaseComObject(view); + SafeReleaseComObject(slideShowWindow); + view = null; + slideShowWindow = null; + } + } + } + + return true; + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x8001010E || hr == 0x80004005) + { + DisconnectFromPPT(); + } + LogHelper.WriteLogToFile($"ROTPPTManager 结束幻灯片放映失败: {comEx.Message}", LogHelper.LogType.Error); + return false; + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 结束幻灯片放映失败: {ex}", LogHelper.LogType.Error); + return false; + } + finally + { + SafeReleaseComObject(view); + SafeReleaseComObject(slideShowWindow); + SafeReleaseComObject(slideShowWindows); + } + } + + public bool TryNavigateToSlide(int slideNumber) + { + object slideShowWindows = null; + object slideShowWindow = null; + object view = null; + try + { + if (!IsConnected || !IsInSlideShow || _pptApplication == null) return false; + if (!Marshal.IsComObject(_pptApplication)) return false; + + slideShowWindows = _pptApplication.SlideShowWindows; + if (slideShowWindows != null) + { + dynamic ssw = slideShowWindows; + slideShowWindow = ssw[1]; + if (slideShowWindow != null) + { + dynamic sswObj = slideShowWindow; + sswObj.Activate(); + view = sswObj.View; + if (view != null) + { + dynamic viewObj = view; + viewObj.GotoSlide(slideNumber); + return true; + } + } + } + return false; + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x8001010E || hr == 0x80004005) + { + DisconnectFromPPT(); + } + LogHelper.WriteLogToFile($"ROTPPTManager 跳转到第 {slideNumber} 页失败: {comEx.Message}", LogHelper.LogType.Error); + return false; + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 跳转到第 {slideNumber} 页失败: {ex}", LogHelper.LogType.Error); + return false; + } + finally + { + SafeReleaseComObject(view); + SafeReleaseComObject(slideShowWindow); + SafeReleaseComObject(slideShowWindows); + } + } + + public bool TryNavigateNext() + { + object slideShowWindows = null; + object slideShowWindow = null; + object view = null; + try + { + if (!IsConnected || !IsInSlideShow || _pptApplication == null) return false; + if (!Marshal.IsComObject(_pptApplication)) return false; + + slideShowWindows = _pptApplication.SlideShowWindows; + if (slideShowWindows != null) + { + dynamic ssw = slideShowWindows; + slideShowWindow = ssw[1]; + if (slideShowWindow != null) + { + dynamic sswObj = slideShowWindow; + sswObj.Activate(); + view = sswObj.View; + if (view != null) + { + dynamic viewObj = view; + viewObj.Next(); + return true; + } + } + } + return false; + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x8001010E || hr == 0x80004005) + { + DisconnectFromPPT(); + } + LogHelper.WriteLogToFile($"ROTPPTManager 切换到下一页失败: {comEx.Message}", LogHelper.LogType.Error); + return false; + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 切换到下一页失败: {ex}", LogHelper.LogType.Error); + return false; + } + finally + { + SafeReleaseComObject(view); + SafeReleaseComObject(slideShowWindow); + SafeReleaseComObject(slideShowWindows); + } + } + + public bool TryNavigatePrevious() + { + object slideShowWindows = null; + object slideShowWindow = null; + object view = null; + try + { + if (!IsConnected || !IsInSlideShow || _pptApplication == null) return false; + if (!Marshal.IsComObject(_pptApplication)) return false; + + slideShowWindows = _pptApplication.SlideShowWindows; + if (slideShowWindows != null) + { + dynamic ssw = slideShowWindows; + slideShowWindow = ssw[1]; + if (slideShowWindow != null) + { + dynamic sswObj = slideShowWindow; + sswObj.Activate(); + view = sswObj.View; + if (view != null) + { + dynamic viewObj = view; + viewObj.Previous(); + return true; + } + } + } + return false; + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x8001010E || hr == 0x80004005) + { + DisconnectFromPPT(); + } + LogHelper.WriteLogToFile($"ROTPPTManager 切换到上一页失败: {comEx.Message}", LogHelper.LogType.Error); + return false; + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 切换到上一页失败: {ex}", LogHelper.LogType.Error); + return false; + } + finally + { + SafeReleaseComObject(view); + SafeReleaseComObject(slideShowWindow); + SafeReleaseComObject(slideShowWindows); + } + } + + public int GetCurrentSlideNumber() + { + object slideShowWindows = null; + object slideShowWindow = null; + object view = null; + try + { + if (!IsConnected || _pptApplication == null) return 0; + if (!Marshal.IsComObject(_pptApplication)) return 0; + + slideShowWindows = _pptApplication.SlideShowWindows; + if (slideShowWindows != null) + { + dynamic ssw = slideShowWindows; + slideShowWindow = ssw[1]; + if (slideShowWindow != null) + { + dynamic sswObj = slideShowWindow; + view = sswObj.View; + if (view != null) + { + dynamic viewObj = view; + return viewObj.CurrentShowPosition; + } + } + } + return 0; + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x8001010E || hr == 0x80004005) + { + DisconnectFromPPT(); + } + LogHelper.WriteLogToFile($"ROTPPTManager 获取当前页码失败: {comEx.Message}", LogHelper.LogType.Error); + return 0; + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 获取当前页码失败: {ex}", LogHelper.LogType.Error); + return 0; + } + finally + { + SafeReleaseComObject(view); + SafeReleaseComObject(slideShowWindow); + SafeReleaseComObject(slideShowWindows); + } + } + + public string GetPresentationName() + { + try + { + var pres = GetCurrentActivePresentation() as Presentation; + return pres?.Name ?? ""; + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 获取演示文稿名称失败: {ex}", LogHelper.LogType.Error); + return ""; + } + } + + public bool TryShowSlideNavigation() + { + object slideShowWindows = null; + object slideShowWindow = null; + object slideNavigation = null; + try + { + LogHelper.WriteLogToFile($"ROTPPTManager 尝试显示幻灯片导航 - 连接状态: {IsConnected}, 放映状态: {IsInSlideShow}", LogHelper.LogType.Trace); + + if (!IsConnected || !IsInSlideShow || _pptApplication == null) + { + LogHelper.WriteLogToFile("ROTPPTManager: PPT 未连接或未在放映状态", LogHelper.LogType.Warning); + return false; + } + + if (!Marshal.IsComObject(_pptApplication)) + { + LogHelper.WriteLogToFile("ROTPPTManager: PPT 应用程序 COM 对象无效", LogHelper.LogType.Warning); + return false; + } + + slideShowWindows = _pptApplication.SlideShowWindows; + if (slideShowWindows != null) + { + dynamic ssw = slideShowWindows; + slideShowWindow = ssw[1]; + if (slideShowWindow == null) + { + LogHelper.WriteLogToFile("ROTPPTManager: 幻灯片放映窗口为空", LogHelper.LogType.Warning); + return false; + } + + try + { + dynamic sswObj = slideShowWindow; + slideNavigation = sswObj.SlideNavigation; + if (slideNavigation != null) + { + dynamic sn = slideNavigation; + sn.Visible = true; + LogHelper.WriteLogToFile("ROTPPTManager: 成功显示幻灯片导航", LogHelper.LogType.Event); + return true; + } + + LogHelper.WriteLogToFile("ROTPPTManager: SlideNavigation 对象为空，可能当前环境不支持", LogHelper.LogType.Warning); + return false; + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x80020006) + { + LogHelper.WriteLogToFile("ROTPPTManager: 当前 PPT 实例不支持 SlideNavigation 功能", LogHelper.LogType.Warning); + return false; + } + throw; + } + } + return false; + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x8001010E || hr == 0x80004005) + { + DisconnectFromPPT(); + } + LogHelper.WriteLogToFile($"ROTPPTManager 显示幻灯片导航失败: {comEx.Message}", LogHelper.LogType.Error); + return false; + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 显示幻灯片导航失败: {ex}", LogHelper.LogType.Error); + return false; + } + finally + { + SafeReleaseComObject(slideNavigation); + SafeReleaseComObject(slideShowWindow); + SafeReleaseComObject(slideShowWindows); + } + } + + public object GetCurrentActivePresentation() + { + try + { + if (!IsConnected || _pptApplication == null) return null; + if (!Marshal.IsComObject(_pptApplication)) return null; + + if (IsInSlideShow && _pptApplication.SlideShowWindows.Count > 0) + { + try + { + var slideShowWindow = _pptApplication.SlideShowWindows[1]; + if (slideShowWindow?.View != null) + { + return (Presentation)slideShowWindow.View.Slide.Parent; + } + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x80048240) + { + return null; + } + throw; + } + } + + if (_pptApplication.ActiveWindow?.Presentation != null) + { + return _pptApplication.ActiveWindow.Presentation; + } + + return _currentPresentation; + } + catch (COMException comEx) + { + var hr = (uint)comEx.HResult; + if (hr == 0x8001010E || hr == 0x80004005) + { + DisconnectFromPPT(); + } + LogHelper.WriteLogToFile($"ROTPPTManager 获取当前演示文稿失败: {comEx.Message}", LogHelper.LogType.Error); + return null; + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 获取当前演示文稿失败: {ex}", LogHelper.LogType.Error); + return null; + } + } + #endregion + + #region Helpers + private void UpdateCurrentPresentationInfo() + { + try + { + if (!IsConnected || _pptApplication == null) return; + if (!Marshal.IsComObject(_pptApplication)) return; + + try + { + _currentPresentation = _pptApplication.ActivePresentation; + } + catch + { + _currentPresentation = null; + } + + if (_currentPresentation != null) + { + try + { + _currentSlides = _currentPresentation.Slides; + SlidesCount = _currentSlides?.Count ?? 0; + } + catch + { + _currentSlides = null; + SlidesCount = 0; + } + } + else + { + _currentSlides = null; + SlidesCount = 0; + } + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager 更新当前演示文稿信息失败: {ex}", LogHelper.LogType.Error); + } + } + + /// + /// 安全释放 COM 对象。 + /// + private void SafeReleaseComObject(object comObject) + { + try + { + if (comObject != null && Marshal.IsComObject(comObject)) + { + Marshal.ReleaseComObject(comObject); + } + } + catch + { + } + } + #endregion + + #region IDisposable + public void Dispose() + { + if (_disposed) return; + _disposed = true; + + try + { + StopMonitoring(); + } + catch (Exception ex) + { + LogHelper.WriteLogToFile($"ROTPPTManager Dispose 异常: {ex}", LogHelper.LogType.Error); + } + } + #endregion + } +} +