using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using OFFICECORE = Microsoft.Office.Core;
using POWERPOINT =   Microsoft.Office.Interop.PowerPoint;
using System.Windows;
using System.Collections;
using System.Windows.Controls;

amespace PPTDraw.PPTOperate
 {
     /// <summary>
     /// PPT文档操作实现类.
    /// </summary>
      public class OperatePPT
      {
          #region=========基本的参数信息=======
          POWERPOINT.Application objApp = null;
          POWERPOINT.Presentation objPresSet = null;
          POWERPOINT.SlideShowWindows objSSWs;
          POWERPOINT.SlideShowTransition objSST;
          POWERPOINT.SlideShowSettings objSSS;
          POWERPOINT.SlideRange objSldRng;
          bool bAssistantOn;
          double pixperPoint = 0;
          double offsetx = 0;
          double offsety = 0;
          #endregion
          #region===========操作方法==============
          /// <summary>
          /// 打开PPT文档并播放显示。
          /// </summary>
          /// <param name="filePath">PPT文件路径</param>
          public void PPTOpen(string filePath)
          {
           //防止连续打开多个PPT程序.
             if (this.objApp != null) { return; }
              try
              {
                  objApp = new POWERPOINT.Application();
                  //以非只读方式打开,方便操作结束后保存.
                  objPresSet = objApp.Presentations.Open(filePath, OFFICECORE.MsoTriState.msoFalse, OFFICECORE.MsoTriState.msoFalse, OFFICECORE.MsoTriState.msoFalse);
                  //Prevent Office Assistant from displaying alert messages:
                  bAssistantOn = objApp.Assistant.On;
                  objApp.Assistant.On = false;
                  objSSS = this.objPresSet.SlideShowSettings;
                  objSSS.Run();
              }
              catch (Exception ex)
              {
                  this.objApp.Quit();
              }
          }
          /// <summary>
          /// 自动播放PPT文档.
          /// </summary>
          /// <param name="filePath">PPTy文件路径.</param>
          /// <param name="playTime">翻页的时间间隔.【以秒为单位】</param>
          public void PPTAuto(string filePath, int playTime)
          {
              //防止连续打开多个PPT程序.
              if (this.objApp != null) { return; }
              objApp = new POWERPOINT.Application();
              objPresSet = objApp.Presentations.Open(filePath, OFFICECORE.MsoTriState.msoCTrue, OFFICECORE.MsoTriState.msoFalse, OFFICECORE.MsoTriState.msoFalse);
              // 自动播放的代码（开始）
              int Slides = objPresSet.Slides.Count;
              int[] SlideIdx = new int[Slides];
              for (int i = 0; i < Slides; i++) { SlideIdx[i] = i + 1; };
              objSldRng = objPresSet.Slides.Range(SlideIdx);
              objSST = objSldRng.SlideShowTransition;
              //设置翻页的时间.
              objSST.AdvanceOnTime = OFFICECORE.MsoTriState.msoCTrue;
              objSST.AdvanceTime = playTime;
              //翻页时的特效!
              objSST.EntryEffect = POWERPOINT.PpEntryEffect.ppEffectCircleOut;
//Prevent Office Assistant from displaying alert messages:
              //bAssistantOn = objApp.Assistant.On;
              //objApp.Assistant.On = false;
　　　　　　　　//上面两行代码需要注释掉，否则编译不通过。从Office 2007（含）之后，Microsoft office assistant [closed]已经不能再正常使用了

//Run the Slide show from slides 1 thru 3.
              objSSS = objPresSet.SlideShowSettings;
              objSSS.StartingSlide = 1;
              objSSS.EndingSlide = Slides;
              objSSS.Run();
              //Wait for the slide show to end.
              objSSWs = objApp.SlideShowWindows;
              while (objSSWs.Count >= 1) System.Threading.Thread.Sleep(playTime * 100);
              this.objPresSet.Close();
              this.objApp.Quit();
          }
          /// <summary>
          /// PPT下一页。
          /// </summary>
          public void NextSlide()
          {
              if (this.objApp != null)
                  this.objPresSet.SlideShowWindow.View.Next();
          }
          /// <summary>
          /// PPT上一页。
         /// </summary>
         public void PreviousSlide()
         {
             if (this.objApp != null)
                 this.objPresSet.SlideShowWindow.View.Previous();
        }
         /// <summary>
         /// 对当前的PPT页面进行图片插入操作。
         /// </summary>
         /// <param name="alImage">图片对象信息数组</param>
         /// <param name="offsetx">插入图片距离左边长度</param>
         /// <param name="pixperPoint">距离比例值</param>
         /// <returns>是否添加成功！</returns>
         public bool InsertToSlide(List<PPTOBJ> listObj)//PPTOBJ是无法识别的类型
         {
             bool InsertSlide = false;
             if (this.objPresSet != null)
             {
                 this.SlideParams();
                 int slipeint = objPresSet.SlideShowWindow.View.CurrentShowPosition;
                 foreach (PPTOBJ myobj in listObj)
                 {
                     objPresSet.Slides[slipeint].Shapes.AddPicture(
                          myobj.Path,           //图片路径
                          OFFICECORE.MsoTriState.msoFalse,
                          OFFICECORE.MsoTriState.msoTrue,
                          (float)((myobj.X - this.offsetx) / this.pixperPoint),       //插入图片距离左边长度
                          (float)(myobj.Y / this.pixperPoint),       //插入图片距离顶部高度
                          (float)(myobj.Width / this.pixperPoint),   //插入图片的宽度
                          (float)(myobj.Height / this.pixperPoint)   //插入图片的高度
                       );
                 }
                 InsertSlide = true;
            }
             return InsertSlide;
         }
         /// <summary>
         /// 计算InkCanvas画板上的偏移参数，与PPT上显示图片的参数。
         /// 用于PPT加载图片时使用
         /// </summary>
         private void SlideParams()
         {
            double slideWidth = this.objPresSet.PageSetup.SlideWidth;
             double slideHeight = this.objPresSet.PageSetup.SlideHeight;
            double inkCanWidth = SystemParameters.PrimaryScreenWidth;//inkCan.ActualWidth;
             double inkCanHeight = SystemParameters.PrimaryScreenHeight;//inkCan.ActualHeight ;
             if ((slideWidth / slideHeight) > (inkCanWidth / inkCanHeight))
             {
                 this.pixperPoint = inkCanHeight / slideHeight;
                 this.offsetx = 0;
                 this.offsety = (inkCanHeight - slideHeight * this.pixperPoint) / 2;
             }
             else
             {
                 this.pixperPoint = inkCanHeight / slideHeight;
                 this.offsety = 0;
                 this.offsetx = (inkCanWidth - slideWidth * this.pixperPoint) / 2;
             }
         }
         /// <summary>
         /// 关闭PPT文档。
         /// </summary>
         public void PPTClose()
         {
             //装备PPT程序。
             if (this.objPresSet != null)
             {
                 //判断是否退出程序,可以不使用。
                 //objSSWs = objApp.SlideShowWindows;
                 //if (objSSWs.Count >= 1)
                 //{
                     if (MessageBox.Show("是否保存修改的笔迹!", "提示", MessageBoxButton.OKCancel) == MessageBoxResult.OK)
                         this.objPresSet.Save();
                 //}
                 //this.objPresSet.Close();
            }
             if (this.objApp != null)
                 this.objApp.Quit();
             GC.Collect();
         }
         #endregion
     }
 }