如何在我的網站的PDFsharp中使用字體？

Question

我只是用在一個藍色的WebApplication網站Arial字體，但是當我到達這條線：

MainFont = new XFont("Arial", FontSize); 

它拋出一個異常讀數：Font data could not retrieved.

我還以爲Arial字體將被安裝在服務器上...我也嘗試將其更改爲Sans-Serif以匹配Microsoft生成的Web站點的默認字體......但仍然失敗。

我也嘗試將Arial.ttf添加到項目中，但那沒有奏效。

Answer 1

感謝指針@PDFSharp團隊。這裏是我的PdfSharp 1.5 beta3b實現：

添加你想你的項目的字體 - 在我下面的例子，我把Arial在MyProject\fonts\arial\arial.ttf等設置每個字體文件作爲嵌入資源（屬性 - >生成操作）。

應用的字體解析只有一次使用這樣的靜態調用：

MyFontResolver.Apply(); // Ensures it's only applied once 

這裏的字體解析類：

class MyFontResolver : IFontResolver 
{ 
    public FontResolverInfo ResolveTypeface(string familyName, bool isBold, bool isItalic) 
    { 
     // Ignore case of font names. 
     var name = familyName.ToLower().TrimEnd('#'); 

     // Deal with the fonts we know. 
     switch (name) 
     { 
      case "arial": 
       if (isBold) 
       { 
        if (isItalic) 
         return new FontResolverInfo("Arial#bi"); 
        return new FontResolverInfo("Arial#b"); 
       } 
       if (isItalic) 
        return new FontResolverInfo("Arial#i"); 
       return new FontResolverInfo("Arial#"); 
     } 

     // We pass all other font requests to the default handler. 
     // When running on a web server without sufficient permission, you can return a default font at this stage. 
     return PlatformFontResolver.ResolveTypeface(familyName, isBold, isItalic); 
    } 

    /// <summary> 
    /// Return the font data for the fonts. 
    /// </summary> 
    public byte[] GetFont(string faceName) 
    { 
     switch (faceName) 
     { 
      case "Arial#": 
       return FontHelper.Arial; 

      case "Arial#b": 
       return FontHelper.ArialBold; 

      case "Arial#i": 
       return FontHelper.ArialItalic; 

      case "Arial#bi": 
       return FontHelper.ArialBoldItalic; 
     } 

     return null; 
    } 


    internal static MyFontResolver OurGlobalFontResolver = null; 

    /// <summary> 
    /// Ensure the font resolver is only applied once (or an exception is thrown) 
    /// </summary> 
    internal static void Apply() 
    { 
     if (OurGlobalFontResolver == null || GlobalFontSettings.FontResolver == null) 
     { 
      if (OurGlobalFontResolver == null) 
       OurGlobalFontResolver = new MyFontResolver(); 

      GlobalFontSettings.FontResolver = OurGlobalFontResolver; 
     } 
    } 
} 


/// <summary> 
/// Helper class that reads font data from embedded resources. 
/// </summary> 
public static class FontHelper 
{ 
    public static byte[] Arial 
    { 
     get { return LoadFontData("MyProject.fonts.arial.arial.ttf"); } 
    } 

    public static byte[] ArialBold 
    { 
     get { return LoadFontData("MyProject.fonts.arial.arialbd.ttf"); } 
    } 

    public static byte[] ArialItalic 
    { 
     get { return LoadFontData("MyProject.fonts.arial.ariali.ttf"); } 
    } 

    public static byte[] ArialBoldItalic 
    { 
     get { return LoadFontData("MyProject.fonts.arial.arialbi.ttf"); } 
    } 

    /// <summary> 
    /// Returns the specified font from an embedded resource. 
    /// </summary> 
    static byte[] LoadFontData(string name) 
    { 
     var assembly = Assembly.GetExecutingAssembly(); 

     // Test code to find the names of embedded fonts 
     //var ourResources = assembly.GetManifestResourceNames(); 

     using (Stream stream = assembly.GetManifestResourceStream(name)) 
     { 
      if (stream == null) 
       throw new ArgumentException("No resource with name " + name); 

      int count = (int)stream.Length; 
      byte[] data = new byte[count]; 
      stream.Read(data, 0, count); 
      return data; 
     } 
    } 
} 

這是基於這兩個單一的，完整的和工人階級幾乎相同的帖子：this blog和this forum。

Answer 2

使用最新版本的PDFsharp（目前是1.50 beta 3）並實現IFontResolver。

參見：
https://stackoverflow.com/a/32489271/162529
https://stackoverflow.com/a/29059207/162529

字體可以在服務器上安裝，但PDFsharp無法讀取它。