Class: Fontisan::Type1::FontDictionary

Inherits:
Object
  • Object
show all
Defined in:
lib/fontisan/type1/font_dictionary.rb

Overview

Type 1 Font Dictionary model

FontDictionary parses and stores the font dictionary from a Type 1 font, which contains metadata about the font including FontInfo, FontName, Encoding, and other properties.

The font dictionary is the top-level PostScript dictionary that defines the font's properties and contains references to the Private dictionary and CharStrings.

Examples:

Parse font dictionary from decrypted font data

dict = Fontisan::Type1::FontDictionary.parse(decrypted_data)
puts dict.font_name
puts dict.font_info.full_name
puts dict.font_b_box

See Also:

Defined Under Namespace

Classes: Encoding, FontInfo

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ FontDictionary

Initialize a new FontDictionary



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# File 'lib/fontisan/type1/font_dictionary.rb', line 63

def initialize
  @font_info = FontInfo.new
  @encoding = Encoding.new
  @raw_data = {}
  @parsed = false
end

Instance Attribute Details

#encoding ⇒ Encoding (readonly)

Returns Font encoding.

Returns:



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# File 'lib/fontisan/type1/font_dictionary.rb', line 30

def encoding
  @encoding
end

#font_b_box ⇒ Hash (readonly) Also known as: font_bbox

Returns Font bounding box [x_min, y_min, x_max, y_max].

Returns:

  • (Hash) —

    Font bounding box [x_min, y_min, x_max, y_max]



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# File 'lib/fontisan/type1/font_dictionary.rb', line 33

def font_b_box
  @font_b_box
end

#font_info ⇒ FontInfo (readonly)

Returns Font information.

Returns:



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# File 'lib/fontisan/type1/font_dictionary.rb', line 24

def font_info
  @font_info
end

#font_matrix ⇒ Array<Float> (readonly)

Returns Font matrix [xx, xy, yx, yy, tx, ty].

Returns:

  • (Array<Float>) —

    Font matrix [xx, xy, yx, yy, tx, ty]



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# File 'lib/fontisan/type1/font_dictionary.rb', line 39

def font_matrix
  @font_matrix
end

#font_name ⇒ String (readonly)

Returns Font name.

Returns:

  • (String) —

    Font name



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# File 'lib/fontisan/type1/font_dictionary.rb', line 27

def font_name
  @font_name
end

#font_type ⇒ Integer (readonly)

Returns Font type (always 1 for Type 1).

Returns:

  • (Integer) —

    Font type (always 1 for Type 1)



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# File 'lib/fontisan/type1/font_dictionary.rb', line 45

def font_type
  @font_type
end

#paint_type ⇒ Integer (readonly)

Returns Paint type (0=symbol, 1=character).

Returns:

  • (Integer) —

    Paint type (0=symbol, 1=character)



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# File 'lib/fontisan/type1/font_dictionary.rb', line 42

def paint_type
  @paint_type
end

#raw_data ⇒ Hash (readonly)

Returns Raw dictionary data.

Returns:

  • (Hash) —

    Raw dictionary data



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# File 'lib/fontisan/type1/font_dictionary.rb', line 48

def raw_data
  @raw_data
end

Class Method Details

.parse(data) ⇒ FontDictionary

Parse font dictionary from decrypted Type 1 font data

Examples:

Parse from decrypted font data

dict = Fontisan::Type1::FontDictionary.parse(decrypted_data)

Parameters:

  • data (String) —

    Decrypted Type 1 font data

Returns:

Raises:



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# File 'lib/fontisan/type1/font_dictionary.rb', line 58

def self.parse(data)
  new.parse(data)
end

Instance Method Details

#[](key) ⇒ Object?

Get raw value from dictionary

Parameters:

  • key (String) —

    Dictionary key

Returns:

  • (Object, nil) —

    Value or nil if not found



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# File 'lib/fontisan/type1/font_dictionary.rb', line 136

def [](key)
  @raw_data[key]
end

#copyright ⇒ String?

Get copyright from FontInfo

Returns:

  • (String, nil) —

    Copyright notice



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# File 'lib/fontisan/type1/font_dictionary.rb', line 114

def copyright
  @font_info&.copyright
end

#family_name ⇒ String?

Get family name from FontInfo

Returns:

  • (String, nil) —

    Family name



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# File 'lib/fontisan/type1/font_dictionary.rb', line 100

def family_name
  @font_info&.family_name
end

#full_name ⇒ String?

Get full name from FontInfo

Returns:

  • (String, nil) —

    Full font name



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# File 'lib/fontisan/type1/font_dictionary.rb', line 93

def full_name
  @font_info&.full_name
end

#notice ⇒ String?

Get notice from FontInfo

Returns:

  • (String, nil) —

    Notice string



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# File 'lib/fontisan/type1/font_dictionary.rb', line 121

def notice
  @font_info&.notice
end

#parse(data) ⇒ FontDictionary

Parse font dictionary from decrypted Type 1 font data

Parameters:

  • data (String) —

    Decrypted Type 1 font data

Returns:



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# File 'lib/fontisan/type1/font_dictionary.rb', line 74

def parse(data)
  extract_font_dictionary(data)
  extract_font_info
  extract_encoding
  extract_properties
  @parsed = true
  self
end

#parsed? ⇒ Boolean

Check if dictionary was successfully parsed

Returns:

  • (Boolean) —

    True if dictionary has been parsed



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# File 'lib/fontisan/type1/font_dictionary.rb', line 86

def parsed?
  @parsed
end

#to_type1_format ⇒ String

Convert FontDictionary to Type 1 text format

Generates the PostScript code for the Font Dictionary section of a Type 1 font.

Examples:

Generate Type 1 format

dict = FontDictionary.new
puts dict.to_type1_format

Returns:

  • (String) —

    Type 1 Font Dictionary text



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# File 'lib/fontisan/type1/font_dictionary.rb', line 150

def to_type1_format
  result = []
  result << "% Type 1 Font Dictionary"
  result << "12 dict begin"
  result << ""
  result << "/FontType 1 def"
  result << "/PaintType #{@paint_type} def"
  result << font_matrix_to_type1
  result << font_bbox_to_type1
  result << ""
  result << font_info_to_type1
  result << ""
  result << "currentdict end"
  result << "/FontName #{@font_name} def"

  result.join("\n")
end

#version ⇒ String?

Get version from FontInfo

Returns:

  • (String, nil) —

    Font version



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# File 'lib/fontisan/type1/font_dictionary.rb', line 107

def version
  @font_info&.version
end

#weight ⇒ String?

Get weight from FontInfo

Returns:

  • (String, nil) —

    Font weight (Thin, Light, Regular, Bold, etc.)



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# File 'lib/fontisan/type1/font_dictionary.rb', line 128

def weight
  @font_info&.weight
end