Pptx的形状转为WPF的Geometry

本文是将演示如何解析pptx文件的形状到WPF当中，并且绘制显示出来

解析Pptx

我打算解析pptx中的五边形来作为演示效果，直接上代码：

MainWindow.xaml:

 <Grid>  <Grid.RowDefinitions>   <RowDefinition />   <RowDefinition Height="2*"/>  </Grid.RowDefinitions>  <StackPanel Orientation="Horizontal" VerticalAlignment="Center" HorizontalAlignment="Center">   <TextBlock Text="pptx的文件路径:" VerticalAlignment="Center" FontSize="15" Margin="10"/>   <TextBox x:Name="FilePathText" Height="50" Width="300" Margin="0,0,10,0" TextWrapping="Wrap"/>   <Button x:Name="Button" Content="解析PPT" Click="Button_OnClick" Width="120" Height="40"/>  </StackPanel>  <Path x:Name="Path" Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Center" Stroke="Blue"/> </Grid>

MainWindow.xaml.cs:

  private void PptxToGeometry(string filePath)  {   if (!File.Exists(filePath) || !filePath.EndsWith(".pptx", StringComparison.OrdinalIgnoreCase))   {    return;   }   using (var presentationDocument = PresentationDocument.Open(filePath, false))   {    var presentationPart = presentationDocument.PresentationPart;    var presentation = presentationPart?.Presentation;    var slideIdList = presentation?.SlideIdList;    if (slideIdList == null)    {     return;    }    foreach (var slideId in slideIdList.ChildElements.OfType<SlideId>())    {     var slidePart = (SlidePart)presentationPart.GetPartById(slideId.RelationshipId);     var slide = slidePart.Slide;     foreach (var shapeProperties in slide.Descendants<ShapeProperties>())     {      var presetGeometry = shapeProperties.GetFirstChild<PresetGeometry>();      if (presetGeometry != null && presetGeometry.Preset.HasValue)      {       if (presetGeometry.Preset == ShapeTypeValues.Pentagon)       {        var transform2D = shapeProperties.GetFirstChild<Transform2D>();        var extents = transform2D?.GetFirstChild<Extents>();        if (extents != null)        {         var width = extents.Cx;         var height = extents.Cy;         if (width.HasValue && height.HasValue)         {          var points = GetPentagonPoints(width.Value.EmuToPixel(), height.Value.EmuToPixel());          RenderGeometry(points);         }        }       }      }     }    }   }  }  /// <summary>  /// 获取五边形顶点坐标  /// </summary>  /// <param name="width"></param>  /// <param name="height"></param>  /// <returns></returns>  /// 该五边形定义出自ECMA-376-Fifth-Edition-Part-1-Fundamentals-And-Markup-Language-Reference  /// \OfficeOpen

ShapeGeometryHelper.cs:

public static class ShapeGeometryHelper {  public readonly struct FormulaProperties  {   public readonly double t;   public readonly double h;   public readonly double w;   public readonly double hd2;   public readonly double wd2;   public readonly double vc;   public readonly double hc;   public FormulaProperties(double width, double height)   {    t = 0;    w = width;    h = height;    hd2 = h / 2;    wd2 = w / 2;    vc = height / 2;    hc = width / 2;   }  }  public static long EmuToPixel(this long eum)  {    const long defaultDpi = 96;   return eum / 914400 * defaultDpi;  }  /// <summary>  /// Open

效果如下：

源码

BlogCodeSample/PptPolygonToWPFGeometry at main · ZhengDaoWang/BlogCodeSample

参考

C# dontet Office Open

C# dotnet 使用 Open

C# dotnet 使用 Open









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本文是将演示如何解析pptx文件的形状到WPF当中，并且绘制显示出来首先，我们先安装nuget的opennuget包管理器控制台：Install-PackageDocumentFormat.Opencsproj引用：<PackageReferenceInclude="DocumentFormat.Open解析Pptx我打算解析pptx中的五边形来作为演示效果，直接上代码：MainW
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