CODEWITHSUNDEEP
c#wpfpdfpdfsharpmigradoc
Michał J. Gąsior
Michał J. Gąsior

Reputation: 1669

Fonts don't load in the pdf viewer

I have currently a problem with PdfSharp/MigraDoc and a pdf viewer. I have used the EZFontResolver made by Thomas to be able to generate pdfs with custom fonts. Unfortunately the pdf viewer is unable to render the font, and I have no idea why. I have seen a bug described by Travis on Thomas' blog, which noted, that if EZFontResolver doesn't have multiple bold/italic symbol recognition (for example "fontname|b|b"), than PdfDocumentRenderer.RenderDocument() fails. The point is, when I try something like this:

Document document = DdlReader.DocumentFromString(ddl);
_renderer = new DocumentRenderer(document);
_renderer.PrepareDocument();

than the EZFontResolver is being asked for fonts with names like "customfont|b|b" (it doesn't happen when I use only PdfDocument.Save(...)) instead of "customfont".

My pdf viewer overrides DocumentViewer and views FixedDocument class instances. The funny thing is that the saved pdf file has all the fonts set, but the preview is unable to do that (and that is my big problem). All of this happens even though I return the right font with the resolver.

EDIT:

The ddl is a string which looks something like this:

"\\document
[
  Info
  {
    Title = \"My file\"
    Subject = \"My pdf file\"
    Author = \"mikes\"
  }
]
{
  \\styles
  {
    Heading1 : Normal
    {
      Font
      {
        Name = \"My custom font\"
        Bold = true
      }
      ParagraphFormat
      {
        Alignment = Center
        SpaceBefore = \"0.5cm\"
        SpaceAfter = \"0.5cm\"
      }
    }

    header : Normal
    {
      Font
      {
        Name = \"My custom font\"
        Size = 6
      }
      ParagraphFormat
      {
        Alignment = Center
      }
    }

And when I deleted the bug fix by Travis, the exception was thrown in the _renderer.PrepareDocument() (after fix, the stack trace showed that the source of multiple "|b" was also out of there).

Upvotes: 0

Views: 591

Answers (1)

I liked the old Stack Overflow
I liked the old Stack Overflow

Reputation: 21689

Simulated bold and simulated italics use the regular font, but a transformation is applied.

Therefore the simulation will not work if the PDF viewer does not support those transformations.

The DocumentViewer that comes with MigraDoc does not display PDF files, it displays MigraDoc documents. For technical reasons it cannot use fonts supplied via the IFontResolver interface. EZFontResolver is an implementation of IFontResolver.

With respect to "customfont|b|b": I cannot say whether this is a bug or the regular behaviour. Please provide an MCVE (complete sample) if you think it is a bug.

Upvotes: 1

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