Class: TTFunk::Subset::Unicode8Bit

Inherits:
Base
  • Object
show all
Defined in:
lib/ttfunk/subset/unicode_8bit.rb

Instance Attribute Summary

Attributes inherited from Base

#original

Instance Method Summary collapse

Methods inherited from Base

#encode

Constructor Details

#initialize(original) ⇒ Unicode8Bit

Returns a new instance of Unicode8Bit.



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# File 'lib/ttfunk/subset/unicode_8bit.rb', line 7

def initialize(original)
  super
  @subset = { 0x20 => 0x20 }
  @unicodes = { 0x20 => 0x20 }
  @next = 0x21 # apparently, PDF's don't like to use chars between 0-31
end

Instance Method Details

#covers?(character) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ttfunk/subset/unicode_8bit.rb', line 30

def covers?(character)
  @unicodes.key?(character) || @next < 256
end

#from_unicode(character) ⇒ Object 



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# File 'lib/ttfunk/subset/unicode_8bit.rb', line 38

def from_unicode(character)
  @unicodes[character]
end

#includes?(character) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ttfunk/subset/unicode_8bit.rb', line 34

def includes?(character)
  @unicodes.key?(character)
end

#to_unicode_map ⇒ Object 



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# File 'lib/ttfunk/subset/unicode_8bit.rb', line 18

def to_unicode_map
  @subset.dup
end

#unicode? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ttfunk/subset/unicode_8bit.rb', line 14

def unicode?
  true
end

#use(character) ⇒ Object 



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# File 'lib/ttfunk/subset/unicode_8bit.rb', line 22

def use(character)
  if !@unicodes.key?(character)
    @subset[@next] = character
    @unicodes[character] = @next
    @next += 1
  end
end