Print symbols like ≥ → ∏ and similars

[Juan Calderón]

Hello,

How to print characters like  ≥ → ∏ ?

Always it prints something like ≥ → ∕

Thank you.

[Alexander Mankuta]

Hi Juan,

Looks like you have wrong encoding on your string.

Could you please provide a sample script that demonstrates your issue?

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Regards,

Alex

[Juan Calderón]

The code:

format.pdf do
    pdf = Prawn::Document.new
    pdf.text "Hello World"
    pdf.text "ƒ ≥ → ∏".force_encoding("Windows-1252")
    pdf.render_file "public/#{filename}"
    send_data pdf.render, filename: filename, type: 'application/pdf', disposition: "inline"

The result:

    Hello World

    Æ’ ≥ → ∕

Without .force_encoding("Windows-1252"), send:

  Your document includes text that's not compatible with the Windows-1252 character set. If you need full UTF-8 support, use TTF fonts instead of PDF's built-in fonts.

[Alexander Mankuta]

You have to use an external font that provides characters you need. The built-in ones do not have them and that's the reason you're getting the error without force_encoding.

Here's Windows-1252 charset. As you can see, it doesn't provide a single character you want to display.

--

Regards,

Alex

[Juan Calderón]

Thank you for your answer.

The solution was this line:

pdf.font "/Library/Fonts/Arial Unicode.ttf"

Thanks