Module: TTFunk::Table::Cmap::Format06

Defined in:
lib/ttfunk/table/cmap/format06.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#code_map ⇒ Object (readonly)

Returns the value of attribute code_map.



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# File 'lib/ttfunk/table/cmap/format06.rb', line 7

def code_map
  @code_map
end

#language ⇒ Object (readonly)

Returns the value of attribute language.



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# File 'lib/ttfunk/table/cmap/format06.rb', line 6

def language
  @language
end

Class Method Details

.encode(charmap) ⇒ Object 



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# File 'lib/ttfunk/table/cmap/format06.rb', line 9

def self.encode(charmap)
  next_id = 0
  glyph_map = { 0 => 0 }

  sorted_chars = charmap.keys.sort
  low_char, high_char = sorted_chars.first, sorted_chars.last
  entry_count = (1+high_char-low_char)
  glyph_indexes = Array.new(entry_count, 0)

  new_map = charmap.keys.sort.inject({}) do |map, code|
    glyph_map[charmap[code]] ||= next_id += 1
    map[code] = { :old => charmap[code], :new => glyph_map[charmap[code]] }
    glyph_indexes[code - low_char] = glyph_map[charmap[code]]
    map
  end

  subtable = [6, 10+entry_count*2, 0, low_char, entry_count, *glyph_indexes].pack('n*')

  { :charmap => new_map, :subtable => subtable, :max_glyph_id => next_id+1 }
end

Instance Method Details

#[](code) ⇒ Object 



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# File 'lib/ttfunk/table/cmap/format06.rb', line 30

def [](code)
  @code_map[code] || 0
end

#supported? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ttfunk/table/cmap/format06.rb', line 34

def supported?
  true
end