1165 lines
42 KiB
C#
1165 lines
42 KiB
C#
using Microsoft.Office.Interop.PowerPoint;
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using System;
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using System.Runtime.InteropServices;
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using System.Threading;
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using System.Timers;
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using System.Windows.Threading;
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using Application = System.Windows.Application;
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using Timer = System.Timers.Timer;
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namespace Ink_Canvas.Helpers
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{
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/// <summary>
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/// 基于 ROT 的 PPT 联动管理器实现。
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/// </summary>
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public class ROTPPTManager : IPPTLinkManager
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{
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#region Events
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public event Action<object> SlideShowBegin;
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public event Action<object> SlideShowNextSlide;
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public event Action<object> SlideShowEnd;
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public event Action<object> PresentationOpen;
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public event Action<object> PresentationClose;
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public event Action<bool> PPTConnectionChanged;
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public event Action<bool> SlideShowStateChanged;
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#endregion
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#region Properties
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/// <summary>
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/// 通过 ROT 获取到的 PowerPoint.Application 实例。
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/// </summary>
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public object PPTApplication => _pptApplication;
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public bool IsConnected
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{
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get
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{
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try
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{
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if (_pptApplication == null) return false;
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if (!Marshal.IsComObject(_pptApplication)) return false;
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// 访问 Name 属性验证 COM 是否仍然有效
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dynamic app = _pptApplication;
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var _ = app.Name;
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return true;
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}
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catch (COMException comEx)
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{
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var hr = (uint)comEx.HResult;
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if (hr == 0x8001010E || hr == 0x80004005 || hr == 0x800706B5)
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{
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return false;
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}
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return false;
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}
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catch
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{
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return false;
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}
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}
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}
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public bool IsInSlideShow
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{
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get
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{
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object slideShowWindows = null;
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object slideShowWindow = null;
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object view = null;
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try
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{
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if (_pptApplication == null || !Marshal.IsComObject(_pptApplication)) return false;
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dynamic app = _pptApplication;
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slideShowWindows = app.SlideShowWindows;
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if (slideShowWindows == null) return false;
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dynamic ssw = slideShowWindows;
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if (ssw.Count == 0) return false;
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try
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{
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slideShowWindow = ssw[1];
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if (slideShowWindow == null) return false;
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dynamic sswObj = slideShowWindow;
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view = sswObj.View;
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if (view == null) return false;
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return true;
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}
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catch (COMException comEx)
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{
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var hr = (uint)comEx.HResult;
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if (hr == 0x8001010E || hr == 0x80004005)
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{
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DisconnectFromPPT();
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}
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return false;
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}
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}
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catch (COMException comEx)
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{
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var hr = (uint)comEx.HResult;
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if (hr == 0x8001010E || hr == 0x80004005)
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{
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DisconnectFromPPT();
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}
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LogHelper.WriteLogToFile($"[ROT] 检查 PPT 放映状态失败: {comEx.Message} (HR: 0x{hr:X8})", LogHelper.LogType.Warning);
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return false;
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}
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catch (Exception ex)
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{
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LogHelper.WriteLogToFile($"[ROT] 检查 PPT 放映状态时发生意外错误: {ex}", LogHelper.LogType.Warning);
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return false;
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}
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finally
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{
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SafeReleaseComObject(view);
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SafeReleaseComObject(slideShowWindow);
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SafeReleaseComObject(slideShowWindows);
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}
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}
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}
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public bool IsSupportWPS { get; set; } = false;
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public bool SkipAnimationsWhenNavigating { get; set; } = false;
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/// <summary>
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/// 当前演示文稿的总页数（每次按需计算，不缓存 COM 对象）。
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/// </summary>
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public int SlidesCount
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{
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get
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{
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object pres = null;
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object slides = null;
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try
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{
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pres = GetCurrentActivePresentation();
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if (pres == null) return 0;
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dynamic dp = pres;
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slides = dp.Slides;
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if (slides == null) return 0;
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dynamic ds = slides;
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return (int)ds.Count;
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}
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catch
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{
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return 0;
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}
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finally
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{
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SafeReleaseComObject(slides);
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SafeReleaseComObject(pres);
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}
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}
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}
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#endregion
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#region Private Fields
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// 唯一持久化的 COM 对象字段：PPT 应用程序实例
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private object _pptApplication;
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private Timer _unifiedRotTimer;
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private int _rotTickCount;
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private bool _isModuleUnloading;
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private bool _lastSlideShowState;
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private readonly object _lockObject = new object();
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private bool _disposed;
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#endregion
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#region Lifecycle
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public ROTPPTManager()
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{
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InitializeTimers();
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}
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private void InitializeTimers()
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{
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_unifiedRotTimer = new Timer(500);
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_unifiedRotTimer.Elapsed += OnUnifiedRotTimerElapsed;
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_unifiedRotTimer.AutoReset = true;
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}
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private void OnUnifiedRotTimerElapsed(object sender, ElapsedEventArgs e)
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{
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var tick = Interlocked.Increment(ref _rotTickCount);
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OnConnectionCheckTimerElapsed(sender, e);
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if (tick % 2 == 0)
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OnSlideShowStateCheckTimerElapsed(sender, e);
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}
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/// <summary>
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/// 启动内部轮询计时器以开始监测 ROT/PPT 连接状态和幻灯片放映状态。
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/// </summary>
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/// <remarks>
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/// 如果实例已被释放（Dispose 已调用）或计时器未初始化，则此方法不会执行任何操作。
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/// </remarks>
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public void StartMonitoring()
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{
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if (_disposed) return;
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_unifiedRotTimer?.Start();
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}
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/// <summary>
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/// 停止内部的 ROT 监视计时器并断开与当前 PowerPoint 实例的连接。
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/// </summary>
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public void StopMonitoring()
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{
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_unifiedRotTimer?.Stop();
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DisconnectFromPPT(restartMonitoring: false);
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}
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/// <summary>
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/// 强制断开当前与 PowerPoint 的 ROT 连接并触发后续的重连流程。
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/// </summary>
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public void ReloadConnection()
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{
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if (_disposed) return;
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LogHelper.WriteLogToFile("[ROT] 执行热重载：强制断开并重新连接", LogHelper.LogType.Event);
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DisconnectFromPPT(restartMonitoring: true);
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}
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#endregion
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#region Connection Management
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/// <summary>
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/// 在计时器触发时检查与 PowerPoint 的 ROT 连接，并在尚未处于已释放或模块卸载期间时尝试通过 ROT 建立连接。
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/// </summary>
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/// <remarks>
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/// 如果在检查或连接过程中发生异常，异常信息会记录到日志并被吞掉，不会向上抛出。
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/// </remarks>
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private void OnConnectionCheckTimerElapsed(object sender, ElapsedEventArgs e)
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{
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try
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{
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if (_disposed || _isModuleUnloading)
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return;
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CheckAndConnectToPPTViaRot();
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}
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catch (Exception ex)
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{
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LogHelper.WriteLogToFile($"[ROT] PPT 连接检查失败: {ex}", LogHelper.LogType.Error);
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}
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}
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/// <summary>
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/// 在定时器触发时检查并在必要时更新 PPT 的放映状态。
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/// </summary>
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/// <remarks>
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/// 当实例未被释放、模块未在卸载过程中且与 PowerPoint 仍保持连接时会调用内部的放映状态检查逻辑。若检查过程中发生异常，会将错误写入日志并吞并异常以保证定时器循环继续运行。
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/// </remarks>
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private void OnSlideShowStateCheckTimerElapsed(object sender, ElapsedEventArgs e)
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{
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try
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{
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if (_disposed || _isModuleUnloading || !IsConnected)
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return;
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CheckSlideShowState();
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}
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catch (Exception ex)
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{
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LogHelper.WriteLogToFile($"[ROT] PPT 放映状态检查失败: {ex}", LogHelper.LogType.Error);
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}
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}
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/// <summary>
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/// 使用 ROT 检查并在必要时建立、切换或断开与 PowerPoint 的 COM 连接。
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/// </summary>
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/// <remarks>
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/// 当管理器已释放或模块正在卸载时不执行任何操作。此方法在内部加锁以防止并发切换；会通过 ROT 获取当前可用的 PowerPoint 实例并：
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/// - 若尚未连接则建立连接；
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/// - 若当前无可用实例则断开现有连接；
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/// - 若检测到已连接的实例发生变化则先断开再重新连接。
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/// 遇到异常时会记录错误日志，并在存在活动连接时尝试断开以保证状态一致性。
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/// </remarks>
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private void CheckAndConnectToPPTViaRot()
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{
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if (_disposed || _isModuleUnloading) return;
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lock (_lockObject)
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{
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try
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{
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if (_isModuleUnloading) return;
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if (_pptApplication != null && !IsConnected)
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{
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DisconnectFromPPT();
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return;
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}
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// 使用 ROT 获取当前最佳 PPT 实例
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var bestApp = PPTROTConnectionHelper.TryConnectViaROT(IsSupportWPS);
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if (bestApp != null && _pptApplication == null)
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{
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// 从未连接 -> 连接
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ConnectToPPT(bestApp);
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}
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else if (bestApp == null && _pptApplication != null)
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{
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// 原来有，现在没有 -> 断开
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DisconnectFromPPT();
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}
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else if (bestApp != null && _pptApplication != null)
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{
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// 已连接，检查是否切换到了另一份 PPT
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if (!PPTROTConnectionHelper.AreComObjectsEqual(_pptApplication, bestApp))
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{
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DisconnectFromPPT();
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ConnectToPPT(bestApp);
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}
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else
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{
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PPTROTConnectionHelper.SafeReleaseComObject(bestApp);
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}
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}
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}
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catch (Exception ex)
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{
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LogHelper.WriteLogToFile($"[ROT] PPT 连接检查异常: {ex}", LogHelper.LogType.Error);
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if (_pptApplication != null)
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{
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DisconnectFromPPT();
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}
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}
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}
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}
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private void CheckSlideShowState()
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{
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try
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{
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if (!IsConnected) return;
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var currentSlideShowState = IsInSlideShow;
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if (currentSlideShowState != _lastSlideShowState)
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{
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_lastSlideShowState = currentSlideShowState;
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SlideShowStateChanged?.Invoke(currentSlideShowState);
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}
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}
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catch (Exception ex)
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{
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LogHelper.WriteLogToFile($"[ROT] 检查 PPT 放映状态异常: {ex}", LogHelper.LogType.Error);
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}
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}
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/// <summary>
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/// 将指定的 PowerPoint COM 应用对象作为当前连接并在 UI 线程上注册必要的演示文稿与幻灯片放映事件，触发连接通知并在已处于放映时尝试触发一次放映开始回调。
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/// </summary>
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/// <param name="appObj">要绑定的 PowerPoint COM 应用对象（通常来自 ROT）。</param>
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/// <remarks>
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/// 如果事件注册或后续处理失败，会记录错误并在异常路径上清除内部引用（将内部应用对象置空）。方法会触发 <c>PPTConnectionChanged(true)</c> 并记录连接成功的事件日志；若检测到当前正处于幻灯片放映，则尝试调用一次放映开始的内部处理以同步状态。异常信息会写入日志，但方法不会向外抛出未捕获的异常（内部会捕获并记录错误后清理状态）。
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/// </remarks>
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private void ConnectToPPT(object appObj)
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{
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try
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{
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_pptApplication = appObj;
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// 在 UI 线程上注册事件（使用 Interop 类型做内部绑定，不向外泄露）
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Application.Current?.Dispatcher?.Invoke(() =>
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{
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try
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{
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var app = _pptApplication as Microsoft.Office.Interop.PowerPoint.Application;
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if (app == null) return;
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app.PresentationOpen += OnPresentationOpenInternal;
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app.PresentationClose += OnPresentationCloseInternal;
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app.SlideShowBegin += OnSlideShowBeginInternal;
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app.SlideShowNextSlide += OnSlideShowNextSlideInternal;
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app.SlideShowEnd += OnSlideShowEndInternal;
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}
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catch (Exception ex)
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{
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LogHelper.WriteLogToFile($"[ROT] PPT 事件注册失败: {ex}", LogHelper.LogType.Error);
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throw;
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}
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}, DispatcherPriority.Normal);
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PPTConnectionChanged?.Invoke(true);
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LogHelper.WriteLogToFile("[ROT] 成功连接到 PPT 应用程序", LogHelper.LogType.Event);
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// 如果已在放映中，根据当前状态触发一次开始事件
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if (IsInSlideShow)
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{
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try
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{
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var app = _pptApplication as Microsoft.Office.Interop.PowerPoint.Application;
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if (app != null && app.SlideShowWindows.Count > 0)
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{
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OnSlideShowBeginInternal(app.SlideShowWindows[1]);
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}
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}
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catch
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{
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}
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}
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}
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catch (Exception ex)
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{
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LogHelper.WriteLogToFile($"[ROT] 连接 PPT 应用程序失败: {ex}", LogHelper.LogType.Error);
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_pptApplication = null;
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}
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}
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private void DisconnectFromPPT(bool restartMonitoring = true)
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{
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object appToRelease = null;
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try
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{
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PPTConnectionChanged?.Invoke(false);
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LogHelper.WriteLogToFile("[ROT] 准备断开 PPT 连接，先卸载监控模块", LogHelper.LogType.Event);
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lock (_lockObject)
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{
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_isModuleUnloading = true;
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_unifiedRotTimer?.Stop();
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appToRelease = _pptApplication;
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_pptApplication = null;
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}
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if (appToRelease != null)
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{
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try
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{
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if (Marshal.IsComObject(appToRelease))
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{
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Application.Current?.Dispatcher?.Invoke(() =>
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{
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try
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{
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var app = appToRelease as Microsoft.Office.Interop.PowerPoint.Application;
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if (app != null)
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{
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app.PresentationOpen -= OnPresentationOpenInternal;
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app.PresentationClose -= OnPresentationCloseInternal;
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app.SlideShowBegin -= OnSlideShowBeginInternal;
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app.SlideShowNextSlide -= OnSlideShowNextSlideInternal;
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app.SlideShowEnd -= OnSlideShowEndInternal;
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}
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}
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catch (Exception ex)
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{
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LogHelper.WriteLogToFile($"[ROT] 取消 PPT 事件注册异常: {ex}", LogHelper.LogType.Warning);
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}
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}, DispatcherPriority.Normal);
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}
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}
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catch (Exception ex)
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{
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LogHelper.WriteLogToFile($"[ROT] 取消 PPT 事件注册失败: {ex}", LogHelper.LogType.Warning);
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}
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if (Marshal.IsComObject(appToRelease))
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{
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try
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{
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Marshal.FinalReleaseComObject(appToRelease);
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}
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catch
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{
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try
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{
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int refCount = Marshal.ReleaseComObject(appToRelease);
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while (refCount > 0)
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{
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refCount = Marshal.ReleaseComObject(appToRelease);
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}
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}
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catch (Exception ex) { System.Diagnostics.Debug.WriteLine(ex); }
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}
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}
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}
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GC.Collect();
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GC.WaitForPendingFinalizers();
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GC.Collect();
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LogHelper.WriteLogToFile("[ROT] 已断开 PPT 连接并尝试释放所有 COM 对象", LogHelper.LogType.Event);
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System.Threading.ThreadPool.QueueUserWorkItem(_ =>
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{
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try
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{
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System.Threading.Thread.Sleep(300);
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|
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GC.Collect();
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GC.WaitForPendingFinalizers();
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GC.Collect();
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System.Threading.Thread.Sleep(200);
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lock (_lockObject)
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{
|
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_isModuleUnloading = false;
|
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if (restartMonitoring && !_disposed)
|
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_unifiedRotTimer?.Start();
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}
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}
|
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catch (Exception ex)
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{
|
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LogHelper.WriteLogToFile($"[ROT] 重新进入监控状态失败: {ex}", LogHelper.LogType.Error);
|
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lock (_lockObject)
|
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{
|
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_isModuleUnloading = false;
|
|
}
|
|
}
|
|
});
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 断开 PPT 连接失败: {ex}", LogHelper.LogType.Error);
|
|
lock (_lockObject)
|
|
{
|
|
_isModuleUnloading = false;
|
|
}
|
|
}
|
|
}
|
|
#endregion
|
|
|
|
#region PPT Event Handlers (internal, strong-typed)
|
|
private void OnPresentationOpenInternal(Presentation pres)
|
|
{
|
|
try
|
|
{
|
|
PresentationOpen?.Invoke(pres);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 处理演示文稿打开事件失败: {ex}", LogHelper.LogType.Error);
|
|
}
|
|
}
|
|
|
|
private void OnPresentationCloseInternal(Presentation pres)
|
|
{
|
|
try
|
|
{
|
|
PresentationClose?.Invoke(pres);
|
|
}
|
|
catch (COMException comEx)
|
|
{
|
|
var hr = (uint)comEx.HResult;
|
|
if (hr == 0x8001010E || hr == 0x80004005 || hr == 0x800706BA || hr == 0x800706BE || hr == 0x80048010)
|
|
{
|
|
// COM 对象已失效，静默忽略
|
|
}
|
|
}
|
|
catch (Exception)
|
|
{
|
|
}
|
|
}
|
|
|
|
private void OnSlideShowBeginInternal(SlideShowWindow wn)
|
|
{
|
|
try
|
|
{
|
|
SlideShowBegin?.Invoke(wn);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 处理放映开始事件失败: {ex}", LogHelper.LogType.Error);
|
|
}
|
|
}
|
|
|
|
private void OnSlideShowNextSlideInternal(SlideShowWindow wn)
|
|
{
|
|
try
|
|
{
|
|
SlideShowNextSlide?.Invoke(wn);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 处理放映翻页事件失败: {ex}", LogHelper.LogType.Error);
|
|
}
|
|
}
|
|
|
|
private void OnSlideShowEndInternal(Presentation pres)
|
|
{
|
|
try
|
|
{
|
|
SlideShowEnd?.Invoke(pres);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 处理放映结束事件失败: {ex}", LogHelper.LogType.Error);
|
|
}
|
|
}
|
|
#endregion
|
|
|
|
#region IPPTLinkManager Methods
|
|
public bool TryStartSlideShow()
|
|
{
|
|
object pres = null;
|
|
try
|
|
{
|
|
if (!IsConnected || _pptApplication == null) return false;
|
|
if (!Marshal.IsComObject(_pptApplication)) return false;
|
|
|
|
dynamic app = _pptApplication;
|
|
try
|
|
{
|
|
pres = app.ActivePresentation;
|
|
}
|
|
catch
|
|
{
|
|
pres = null;
|
|
}
|
|
|
|
if (pres == null || !Marshal.IsComObject(pres)) return false;
|
|
|
|
dynamic dp = pres;
|
|
dp.SlideShowSettings.Run();
|
|
return true;
|
|
}
|
|
catch (COMException comEx)
|
|
{
|
|
var hr = (uint)comEx.HResult;
|
|
if (hr == 0x8001010E || hr == 0x80004005)
|
|
{
|
|
DisconnectFromPPT();
|
|
}
|
|
LogHelper.WriteLogToFile($"[ROT] 开始幻灯片放映失败: {comEx.Message}", LogHelper.LogType.Error);
|
|
return false;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 开始幻灯片放映失败: {ex}", LogHelper.LogType.Error);
|
|
return false;
|
|
}
|
|
finally
|
|
{
|
|
SafeReleaseComObject(pres);
|
|
}
|
|
}
|
|
|
|
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;
|
|
|
|
dynamic app = _pptApplication;
|
|
slideShowWindows = app.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($"[ROT] 结束第 {i} 个放映窗口失败: {ex}", LogHelper.LogType.Warning);
|
|
}
|
|
finally
|
|
{
|
|
SafeReleaseComObject(view);
|
|
SafeReleaseComObject(slideShowWindow);
|
|
view = null;
|
|
slideShowWindow = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
catch (COMException comEx)
|
|
{
|
|
var hr = (uint)comEx.HResult;
|
|
if (hr == 0x8001010E || hr == 0x80004005)
|
|
{
|
|
DisconnectFromPPT();
|
|
}
|
|
LogHelper.WriteLogToFile($"[ROT] 结束幻灯片放映失败: {comEx.Message}", LogHelper.LogType.Error);
|
|
return false;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 结束幻灯片放映失败: {ex}", LogHelper.LogType.Error);
|
|
return false;
|
|
}
|
|
finally
|
|
{
|
|
SafeReleaseComObject(view);
|
|
SafeReleaseComObject(slideShowWindow);
|
|
SafeReleaseComObject(slideShowWindows);
|
|
}
|
|
}
|
|
|
|
public bool TryNavigateToSlide(int slideNumber)
|
|
{
|
|
object slideShowWindows = null;
|
|
object slideShowWindow = null;
|
|
object view = null;
|
|
try
|
|
{
|
|
if (!IsConnected || !IsInSlideShow || _pptApplication == null) return false;
|
|
if (!Marshal.IsComObject(_pptApplication)) return false;
|
|
|
|
dynamic app = _pptApplication;
|
|
slideShowWindows = app.SlideShowWindows;
|
|
if (slideShowWindows != null)
|
|
{
|
|
dynamic ssw = slideShowWindows;
|
|
slideShowWindow = ssw[1];
|
|
if (slideShowWindow != null)
|
|
{
|
|
dynamic sswObj = slideShowWindow;
|
|
if (!SkipAnimationsWhenNavigating)
|
|
sswObj.Activate();
|
|
view = sswObj.View;
|
|
if (view != null)
|
|
{
|
|
dynamic viewObj = view;
|
|
viewObj.GotoSlide(slideNumber);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
catch (COMException comEx)
|
|
{
|
|
var hr = (uint)comEx.HResult;
|
|
if (hr == 0x8001010E || hr == 0x80004005)
|
|
{
|
|
DisconnectFromPPT();
|
|
}
|
|
LogHelper.WriteLogToFile($"[ROT] 跳转到第 {slideNumber} 页失败: {comEx.Message}", LogHelper.LogType.Error);
|
|
return false;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 跳转到第 {slideNumber} 页失败: {ex}", LogHelper.LogType.Error);
|
|
return false;
|
|
}
|
|
finally
|
|
{
|
|
SafeReleaseComObject(view);
|
|
SafeReleaseComObject(slideShowWindow);
|
|
SafeReleaseComObject(slideShowWindows);
|
|
}
|
|
}
|
|
|
|
public bool TryNavigateNext()
|
|
{
|
|
object slideShowWindows = null;
|
|
object slideShowWindow = null;
|
|
object view = null;
|
|
try
|
|
{
|
|
if (!IsConnected || !IsInSlideShow || _pptApplication == null) return false;
|
|
if (!Marshal.IsComObject(_pptApplication)) return false;
|
|
|
|
dynamic app = _pptApplication;
|
|
slideShowWindows = app.SlideShowWindows;
|
|
if (slideShowWindows != null)
|
|
{
|
|
dynamic ssw = slideShowWindows;
|
|
slideShowWindow = ssw[1];
|
|
if (slideShowWindow != null)
|
|
{
|
|
dynamic sswObj = slideShowWindow;
|
|
if (!SkipAnimationsWhenNavigating)
|
|
sswObj.Activate();
|
|
view = sswObj.View;
|
|
if (view != null)
|
|
{
|
|
dynamic viewObj = view;
|
|
viewObj.Next();
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
catch (COMException comEx)
|
|
{
|
|
var hr = (uint)comEx.HResult;
|
|
if (hr == 0x8001010E || hr == 0x80004005)
|
|
{
|
|
DisconnectFromPPT();
|
|
}
|
|
LogHelper.WriteLogToFile($"[ROT] 切换到下一页失败: {comEx.Message}", LogHelper.LogType.Error);
|
|
return false;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 切换到下一页失败: {ex}", LogHelper.LogType.Error);
|
|
return false;
|
|
}
|
|
finally
|
|
{
|
|
SafeReleaseComObject(view);
|
|
SafeReleaseComObject(slideShowWindow);
|
|
SafeReleaseComObject(slideShowWindows);
|
|
}
|
|
}
|
|
|
|
public bool TryNavigatePrevious()
|
|
{
|
|
object slideShowWindows = null;
|
|
object slideShowWindow = null;
|
|
object view = null;
|
|
try
|
|
{
|
|
if (!IsConnected || !IsInSlideShow || _pptApplication == null) return false;
|
|
if (!Marshal.IsComObject(_pptApplication)) return false;
|
|
|
|
dynamic app = _pptApplication;
|
|
slideShowWindows = app.SlideShowWindows;
|
|
if (slideShowWindows != null)
|
|
{
|
|
dynamic ssw = slideShowWindows;
|
|
slideShowWindow = ssw[1];
|
|
if (slideShowWindow != null)
|
|
{
|
|
dynamic sswObj = slideShowWindow;
|
|
if (!SkipAnimationsWhenNavigating)
|
|
sswObj.Activate();
|
|
view = sswObj.View;
|
|
if (view != null)
|
|
{
|
|
dynamic viewObj = view;
|
|
viewObj.Previous();
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
catch (COMException comEx)
|
|
{
|
|
var hr = (uint)comEx.HResult;
|
|
if (hr == 0x8001010E || hr == 0x80004005)
|
|
{
|
|
DisconnectFromPPT();
|
|
}
|
|
LogHelper.WriteLogToFile($"[ROT] 切换到上一页失败: {comEx.Message}", LogHelper.LogType.Error);
|
|
return false;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 切换到上一页失败: {ex}", LogHelper.LogType.Error);
|
|
return false;
|
|
}
|
|
finally
|
|
{
|
|
SafeReleaseComObject(view);
|
|
SafeReleaseComObject(slideShowWindow);
|
|
SafeReleaseComObject(slideShowWindows);
|
|
}
|
|
}
|
|
|
|
public int GetCurrentSlideNumber()
|
|
{
|
|
object slideShowWindows = null;
|
|
object slideShowWindow = null;
|
|
object view = null;
|
|
try
|
|
{
|
|
if (!IsConnected || _pptApplication == null) return 0;
|
|
if (!Marshal.IsComObject(_pptApplication)) return 0;
|
|
|
|
dynamic app = _pptApplication;
|
|
slideShowWindows = app.SlideShowWindows;
|
|
if (slideShowWindows != null)
|
|
{
|
|
dynamic ssw = slideShowWindows;
|
|
slideShowWindow = ssw[1];
|
|
if (slideShowWindow != null)
|
|
{
|
|
dynamic sswObj = slideShowWindow;
|
|
view = sswObj.View;
|
|
if (view != null)
|
|
{
|
|
dynamic viewObj = view;
|
|
return (int)viewObj.CurrentShowPosition;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
catch (COMException comEx)
|
|
{
|
|
var hr = (uint)comEx.HResult;
|
|
if (hr == 0x8001010E || hr == 0x80004005)
|
|
{
|
|
DisconnectFromPPT();
|
|
}
|
|
LogHelper.WriteLogToFile($"[ROT] 获取当前页码失败: {comEx.Message}", LogHelper.LogType.Error);
|
|
return 0;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 获取当前页码失败: {ex}", LogHelper.LogType.Error);
|
|
return 0;
|
|
}
|
|
finally
|
|
{
|
|
SafeReleaseComObject(view);
|
|
SafeReleaseComObject(slideShowWindow);
|
|
SafeReleaseComObject(slideShowWindows);
|
|
}
|
|
}
|
|
|
|
public string GetPresentationName()
|
|
{
|
|
object pres = null;
|
|
try
|
|
{
|
|
pres = GetCurrentActivePresentation();
|
|
if (pres == null) return "";
|
|
|
|
dynamic dp = pres;
|
|
return (string)dp.Name;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 获取演示文稿名称失败: {ex}", LogHelper.LogType.Error);
|
|
return "";
|
|
}
|
|
finally
|
|
{
|
|
SafeReleaseComObject(pres);
|
|
}
|
|
}
|
|
|
|
public bool TryShowSlideNavigation()
|
|
{
|
|
object slideShowWindows = null;
|
|
object slideShowWindow = null;
|
|
object slideNavigation = null;
|
|
try
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 尝试显示幻灯片导航 - 连接状态: {IsConnected}, 放映状态: {IsInSlideShow}", LogHelper.LogType.Trace);
|
|
|
|
if (!IsConnected || !IsInSlideShow || _pptApplication == null)
|
|
{
|
|
LogHelper.WriteLogToFile("[ROT] PPT 未连接或未在放映状态", LogHelper.LogType.Warning);
|
|
return false;
|
|
}
|
|
|
|
if (!Marshal.IsComObject(_pptApplication))
|
|
{
|
|
LogHelper.WriteLogToFile("[ROT] PPT 应用程序 COM 对象无效", LogHelper.LogType.Warning);
|
|
return false;
|
|
}
|
|
|
|
dynamic app = _pptApplication;
|
|
slideShowWindows = app.SlideShowWindows;
|
|
if (slideShowWindows != null)
|
|
{
|
|
dynamic ssw = slideShowWindows;
|
|
slideShowWindow = ssw[1];
|
|
if (slideShowWindow == null)
|
|
{
|
|
LogHelper.WriteLogToFile("[ROT] 幻灯片放映窗口为空", LogHelper.LogType.Warning);
|
|
return false;
|
|
}
|
|
|
|
try
|
|
{
|
|
dynamic sswObj = slideShowWindow;
|
|
slideNavigation = sswObj.SlideNavigation;
|
|
if (slideNavigation != null)
|
|
{
|
|
dynamic sn = slideNavigation;
|
|
sn.Visible = true;
|
|
LogHelper.WriteLogToFile("[ROT] 成功显示幻灯片导航", LogHelper.LogType.Event);
|
|
return true;
|
|
}
|
|
|
|
LogHelper.WriteLogToFile("[ROT] SlideNavigation 对象为空，可能当前环境不支持", LogHelper.LogType.Warning);
|
|
return false;
|
|
}
|
|
catch (COMException comEx)
|
|
{
|
|
var hr = (uint)comEx.HResult;
|
|
if (hr == 0x80020006)
|
|
{
|
|
LogHelper.WriteLogToFile("[ROT] 当前 PPT 实例不支持 SlideNavigation 功能", LogHelper.LogType.Warning);
|
|
return false;
|
|
}
|
|
throw;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
catch (COMException comEx)
|
|
{
|
|
var hr = (uint)comEx.HResult;
|
|
if (hr == 0x8001010E || hr == 0x80004005)
|
|
{
|
|
DisconnectFromPPT();
|
|
}
|
|
LogHelper.WriteLogToFile($"[ROT] 显示幻灯片导航失败: {comEx.Message}", LogHelper.LogType.Error);
|
|
return false;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 显示幻灯片导航失败: {ex}", LogHelper.LogType.Error);
|
|
return false;
|
|
}
|
|
finally
|
|
{
|
|
SafeReleaseComObject(slideNavigation);
|
|
SafeReleaseComObject(slideShowWindow);
|
|
SafeReleaseComObject(slideShowWindows);
|
|
}
|
|
}
|
|
|
|
public object GetCurrentActivePresentation()
|
|
{
|
|
object pres = null;
|
|
object slideShowWindows = null;
|
|
object slideShowWindow = null;
|
|
object view = null;
|
|
object slide = null;
|
|
try
|
|
{
|
|
if (!IsConnected || _pptApplication == null) return null;
|
|
if (!Marshal.IsComObject(_pptApplication)) return null;
|
|
|
|
dynamic app = _pptApplication;
|
|
|
|
// 优先使用放映窗口里的当前演示文稿
|
|
if (IsInSlideShow)
|
|
{
|
|
slideShowWindows = app.SlideShowWindows;
|
|
if (slideShowWindows != null)
|
|
{
|
|
dynamic ssw = slideShowWindows;
|
|
if (ssw.Count > 0)
|
|
{
|
|
slideShowWindow = ssw[1];
|
|
if (slideShowWindow != null)
|
|
{
|
|
dynamic sswObj = slideShowWindow;
|
|
view = sswObj.View;
|
|
if (view != null)
|
|
{
|
|
dynamic viewObj = view;
|
|
slide = viewObj.Slide;
|
|
if (slide != null)
|
|
{
|
|
dynamic ds = slide;
|
|
pres = ds.Parent;
|
|
return pres;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// 其次尝试 ActiveWindow.Presentation
|
|
try
|
|
{
|
|
var aw = app.ActiveWindow;
|
|
if (aw != null)
|
|
{
|
|
dynamic daw = aw;
|
|
pres = daw.Presentation;
|
|
if (pres != null) return pres;
|
|
}
|
|
}
|
|
catch
|
|
{
|
|
}
|
|
|
|
return null;
|
|
}
|
|
catch (COMException comEx)
|
|
{
|
|
var hr = (uint)comEx.HResult;
|
|
if (hr == 0x8001010E || hr == 0x80004005)
|
|
{
|
|
DisconnectFromPPT();
|
|
}
|
|
LogHelper.WriteLogToFile($"[ROT] 获取当前演示文稿失败: {comEx.Message}", LogHelper.LogType.Error);
|
|
return null;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] 获取当前演示文稿失败: {ex}", LogHelper.LogType.Error);
|
|
return null;
|
|
}
|
|
finally
|
|
{
|
|
SafeReleaseComObject(slide);
|
|
SafeReleaseComObject(view);
|
|
SafeReleaseComObject(slideShowWindow);
|
|
SafeReleaseComObject(slideShowWindows);
|
|
// 注意：pres 作为返回值时不在这里释放，由调用方负责（如有需要）
|
|
}
|
|
}
|
|
#endregion
|
|
|
|
#region Helpers
|
|
/// <summary>
|
|
/// 安全释放 COM 对象。
|
|
/// </summary>
|
|
private void SafeReleaseComObject(object comObject)
|
|
{
|
|
try
|
|
{
|
|
if (comObject != null && Marshal.IsComObject(comObject))
|
|
{
|
|
Marshal.ReleaseComObject(comObject);
|
|
}
|
|
}
|
|
catch
|
|
{
|
|
}
|
|
}
|
|
#endregion
|
|
|
|
#region IDisposable
|
|
public void Dispose()
|
|
{
|
|
if (_disposed) return;
|
|
_disposed = true;
|
|
|
|
try
|
|
{
|
|
StopMonitoring();
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
LogHelper.WriteLogToFile($"[ROT] Dispose 异常: {ex}", LogHelper.LogType.Error);
|
|
}
|
|
}
|
|
#endregion
|
|
}
|
|
} |