HexaPDF examples showing off the standard 14 PDF fonts

standard_pdf_fonts.pdf

standard_pdf_fonts.rb

require 'hexapdf/document'

doc = HexaPDF::Document.new

HexaPDF::FontLoader::Standard14::MAPPING.each do |font_name, mapping|
  mapping.each_key do |variant|
    canvas = doc.pages.add_page.canvas
    canvas.font("Helvetica", size: 14)
    canvas.show_text("#{font_name} #{variant != :none ? variant : nil}", at: [100, 700])

    canvas.font(font_name, size: 14, variant: variant)
    font = canvas.font
    encoding = font.font.encoding
    fragment = canvas.text_fragment
    (0..15).each do |y|
      fragment.data.clear
      fragment.offset = [100, 650 - y * 20]
      (0..15).each do |x|
        code = y * 16 + x
        glyph = font.glyph(encoding.name(code)) rescue font.glyph(:space)
        fragment.data << glyph << -(2000 - glyph.width)
      end
      canvas.begin_text.show_glyphs(fragment).end_text
    end
  end
end

doc.task(:optimize, object_streams: :generate)
doc.write("standard_pdf_fonts.pdf")