Devanagari font rendering Issue Linux

[Bipin Paul]

I have code like this.

 QuestPDF.Settings.CheckIfAllTextGlyphsAreAvailable = false;
        QuestPDF.Settings.License = LicenseType.Community;

 [HttpGet("CreatePDF")]
    public  IActionResult CreatePDF()
    {
       
      var res=  Document.Create(container =>
        {
            container
                .Page(page =>
                {
                    page.Size(PageSizes.A4); ;
                    page.Content()
                        .Column(x =>
                        {
                            x.Item().Text("Mixed line: This 中文");
                            x.Item().Text("감사합니다 korean");
                            x.Item().Text("谢谢 chinese");
                            x.Item().Text("ありがとう ございます japanese");
                            x.Item().Text("நன்றி tamil");
                            x.Item().Text("धन्यवाद Hindi");
                            x.Item().Text("ขอบคุณ Thai");
                            x.Item().Text("teşekkürler Turkish");
                            x.Item().Text("ಧನ್ಯವಾದಗಳು Kannada");
                        });
                });
        }).GeneratePdf();
        return File(res, "application/pdf");
    }

it works on Windows but not on Linux, I've installed all the necessary fronts as need (details on sample project).

as per the documentation going forward with version 2024.3.0, we do not need to add fallback method it should work automatically.

here I have sample project.
https://github.com/iAmBipinPaul/QuestPDF.Devanagari.Issue

[DaniRzV]

Its exactly font problem, also you dont have to install them, you can specify font file path as blow

        if (!string.IsNullOrEmpty(_options.FontPath))
        {
            FontManager.RegisterFont(File.OpenRead(_options.FontPath));
        }

        if (!string.IsNullOrEmpty(_options.FallBackFontPath))
        {
            FontManager.RegisterFont(File.OpenRead(_options.FallBackFontPath));
        }
Document.Create(pdf =>
        {
            pdf.Page(pageHandler =>
            {
                pageHandler.If(
                    !string.IsNullOrEmpty(_options.FontName),
                    x => x.DefaultTextStyle(text => 
                        text.FontFamily(_options.FontName)
                        .Fallback(text => text.FontFamily(_options.FallBackFontName)).DirectionAuto()));

[Michael]

I have a similar issue with fonts on linux:

An unhandled exception has occurred while executing the request.
      QuestPDF.Drawing.Exceptions.DocumentDrawingException: Could not find an appropriate font fallback for the following glyphs: 
      $U-0069 'i'
      U-0044 'D'
      U-0041 'A'
      U-0068 'h'
      U-0047 'G'
      U-0020 ' '
      U-0052 'R'
      U-0048 'H'
      U-0065 'e'
      U-0072 'r'
      U-0063 'c'
      U-0074 't'
      U-0073 's'
      U-0076 'v' 
      
      Possible solutions: 
      1) Install fonts that contain missing glyphs in your runtime environment. 
      2) Configure the fallback TextStyle using the 'TextStyle.FontFamilyFallback' method. 
      3) Register additional application specific fonts using the 'FontManager.RegisterFont' method. 
      ```
      
      on windows everything works fine, but on linux that exception is thrown.
      My Pdf just contains some svgs and some basic words

[Bipin Paul]

Its exactly font problem, also you dont have to install them, you can specify font file path as blow

        if (!string.IsNullOrEmpty(_options.FontPath))
        {
            FontManager.RegisterFont(File.OpenRead(_options.FontPath));
        }

        if (!string.IsNullOrEmpty(_options.FallBackFontPath))
        {
            FontManager.RegisterFont(File.OpenRead(_options.FallBackFontPath));
        }
Document.Create(pdf =>
        {
            pdf.Page(pageHandler =>
            {
                pageHandler.If(
                    !string.IsNullOrEmpty(_options.FontName),
                    x => x.DefaultTextStyle(text => 
                        text.FontFamily(_options.FontName)
                        .Fallback(text => text.FontFamily(_options.FallBackFontName)).DirectionAuto()));

Thank @danirzv it worked.

@Zwergenpunk here I have working example of Devanagari

https://github.com/iAmBipinPaul/QuestPDF.Devanagari.Issue

Please check by last commit

[Michael]

thanks for the comment ;)
it helped me solved my issue:
I needed to install lato font:
apt-get -y fonts-lato