Migrate HtmlRenderer.PdfSharp to PDFsharp-GDI v6.2.4

- PdfSharpAdapter.cs: XFontStyle -> XFontStyleEx via Utils.Convert(RFontStyle), drop XPdfFontOptions
- Utils.cs: add Convert(RFontStyle) -> XFontStyleEx helper
- HtmlRenderer.PdfSharp.csproj: PDFsharp 1.50.5147 -> PDFsharp-GDI 6.2.4

Based on PR ArthurHub#238 approach by eXpl0it3r.

Author: ypaulau

Source/HtmlRenderer.PdfSharp/Adapters/PdfSharpAdapter.cs

@@ -119,15 +119,15 @@ protected override RImage ImageFromStreamInt(Stream memoryStream)
 
         protected override RFont CreateFontInt(string family, double size, RFontStyle style)
         {
-            var fontStyle = (XFontStyle)((int)style);
-            var xFont = new XFont(family, size, fontStyle, new XPdfFontOptions(PdfFontEncoding.Unicode));
+            var fontStyle = Utils.Convert(style);
+            var xFont = new XFont(family, size, fontStyle);
             return new FontAdapter(xFont);
         }
 
         protected override RFont CreateFontInt(RFontFamily family, double size, RFontStyle style)
         {
-            var fontStyle = (XFontStyle)((int)style);
-            var xFont = new XFont(((FontFamilyAdapter)family).FontFamily.Name, size, fontStyle, new XPdfFontOptions(PdfFontEncoding.Unicode));
+            var fontStyle = Utils.Convert(style);
+            var xFont = new XFont(((FontFamilyAdapter)family).FontFamily.Name, size, fontStyle);
             return new FontAdapter(xFont);
         }
     }

Source/HtmlRenderer.PdfSharp/HtmlRenderer.PdfSharp.csproj

@@ -32,7 +32,7 @@ Features and Benefits:
     <ProjectReference Include="..\HtmlRenderer\HtmlRenderer.csproj" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="PDFsharp" Version="1.50.5147" />
+    <PackageReference Include="PDFsharp-GDI" Version="6.2.4" />
     <PackageReference Include="System.Drawing.Common" Version="10.0.1" />
   </ItemGroup>
 </Project>

Source/HtmlRenderer.PdfSharp/Utilities/Utils.cs

@@ -96,5 +96,22 @@ public static RColor Convert(Color c)
             return RColor.FromArgb(c.A, c.R, c.G, c.B);
         }
 
+        /// <summary>
+        /// Convert from HtmlRenderer font style to PdfSharp v6 XFontStyleEx.
+        /// </summary>
+        public static XFontStyleEx Convert(RFontStyle style)
+        {
+            XFontStyleEx result = XFontStyleEx.Regular;
+            if ((style & RFontStyle.Bold) == RFontStyle.Bold)
+                result |= XFontStyleEx.Bold;
+            if ((style & RFontStyle.Italic) == RFontStyle.Italic)
+                result |= XFontStyleEx.Italic;
+            if ((style & RFontStyle.Underline) == RFontStyle.Underline)
+                result |= XFontStyleEx.Underline;
+            if ((style & RFontStyle.Strikeout) == RFontStyle.Strikeout)
+                result |= XFontStyleEx.Strikeout;
+            return result;
+        }
+
     }
 }