Class: Pdfrb::Font::TrueType::Loca

Inherits:
Object
  • Object
show all
Defined in:
lib/pdfrb/font/true_type/loca.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data, long_format: false, num_glyphs: 0) ⇒ Loca

Returns a new instance of Loca.



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# File 'lib/pdfrb/font/true_type/loca.rb', line 9

def initialize(data, long_format: false, num_glyphs: 0)
  @offsets = []
  return unless data

  count = num_glyphs + 1
  count.times do |i|
    @offsets << if long_format
                  u32(data, i * 4)
                else
                  (u16(data, i * 2) * 2)
                end
  end
end

Instance Attribute Details

#offsets ⇒ Object (readonly)

Returns the value of attribute offsets.



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# File 'lib/pdfrb/font/true_type/loca.rb', line 7

def offsets
  @offsets
end

Instance Method Details

#glyph_length(index) ⇒ Object 



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# File 'lib/pdfrb/font/true_type/loca.rb', line 29

def glyph_length(index)
  return 0 if index.nil? || index + 1 >= @offsets.length

  @offsets[index + 1] - @offsets[index]
end

#glyph_offset(index) ⇒ Object 



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# File 'lib/pdfrb/font/true_type/loca.rb', line 23

def glyph_offset(index)
  return nil if index.nil? || index >= @offsets.length

  @offsets[index]
end