Module: HexaPDF::FontLoader::Standard14

Defined in:
lib/hexapdf/font_loader/standard14.rb

Overview

This module is used for providing the standard 14 PDF fonts.

Constant Summary collapse

MAPPING =

Mapping of font family name and variant to font name.

{
  'Times' => {
    none: 'Times-Roman',
    bold: 'Times-Bold',
    italic: 'Times-Italic',
    bold_italic: 'Times-BoldItalic',
  },
  'Helvetica' => {
    none: 'Helvetica',
    bold: 'Helvetica-Bold',
    italic: 'Helvetica-Oblique',
    bold_italic: 'Helvetica-BoldOblique',
  },
  'Courier' => {
    none: 'Courier',
    bold: 'Courier-Bold',
    italic: 'Courier-Oblique',
    bold_italic: 'Courier-BoldOblique',
  },
  'Symbol' => {
    none: 'Symbol',
  },
  'ZapfDingbats' => {
    none: 'ZapfDingbats',
  },
}.freeze

Class Method Summary collapse

Class Method Details

.available_fonts(_document) ⇒ Object

Returns a hash of the form ‘font_name => [variants, …]’ of the standard 14 PDF fonts.



99
100
101
 
# File 'lib/hexapdf/font_loader/standard14.rb', line 99

def self.available_fonts(_document)
  MAPPING.transform_values(&:keys)
end

.call(document, name, variant: :none, custom_encoding: false) ⇒ Object

Returns a font wrapper for the named Standard PDF font.

document

The PDF document to associate the font wrapper with.

name

The name of the built-in font. One of Times, Helvetica, Courier, Symbol or ZapfDingbats.

variant

The font variant. Can be :none, :bold, :italic, :bold_italic for Times, Helvetica and Courier; and must be :none for Symbol and ZapfDingbats.

custom_encoding

For Times, Helvetica and Courier the standard encoding WinAnsiEncoding is used. If this is not wanted because access to other glyphs is needed, set this to true



89
90
91
92
93
94
95
96
 
# File 'lib/hexapdf/font_loader/standard14.rb', line 89

def self.call(document, name, variant: :none, custom_encoding: false, **)
  name = MAPPING[name] && MAPPING[name][variant]
  return nil if name.nil?

  file = File.join(HexaPDF.data_dir, 'afm', "#{name}.afm")
  font = (@afm_font_cache ||= {})[file] ||= HexaPDF::Font::Type1::Font.from_afm(file)
  HexaPDF::Font::Type1Wrapper.new(document, font, custom_encoding: custom_encoding)
end