Class: TTFunk::Table

Inherits:
Object
  • Object
show all
Includes:
Reader
Defined in:
lib/ttfunk/table.rb,
lib/ttfunk/table/cff.rb,
lib/ttfunk/table/os2.rb,
lib/ttfunk/table/cmap.rb,
lib/ttfunk/table/dsig.rb,
lib/ttfunk/table/glyf.rb,
lib/ttfunk/table/head.rb,
lib/ttfunk/table/hhea.rb,
lib/ttfunk/table/hmtx.rb,
lib/ttfunk/table/kern.rb,
lib/ttfunk/table/loca.rb,
lib/ttfunk/table/maxp.rb,
lib/ttfunk/table/name.rb,
lib/ttfunk/table/post.rb,
lib/ttfunk/table/sbix.rb,
lib/ttfunk/table/vorg.rb,
lib/ttfunk/table/simple.rb,
lib/ttfunk/table/cff/dict.rb,
lib/ttfunk/table/cff/path.rb,
lib/ttfunk/table/cff/index.rb,
lib/ttfunk/table/cff/header.rb,
lib/ttfunk/table/cff/charset.rb,
lib/ttfunk/table/glyf/simple.rb,
lib/ttfunk/table/cff/charsets.rb,
lib/ttfunk/table/cff/encoding.rb,
lib/ttfunk/table/cff/top_dict.rb,
lib/ttfunk/table/kern/format0.rb,
lib/ttfunk/table/cff/encodings.rb,
lib/ttfunk/table/cff/font_dict.rb,
lib/ttfunk/table/cff/top_index.rb,
lib/ttfunk/table/cmap/format00.rb,
lib/ttfunk/table/cmap/format04.rb,
lib/ttfunk/table/cmap/format06.rb,
lib/ttfunk/table/cmap/format10.rb,
lib/ttfunk/table/cmap/format12.rb,
lib/ttfunk/table/cmap/subtable.rb,
lib/ttfunk/table/glyf/compound.rb,
lib/ttfunk/table/post/format10.rb,
lib/ttfunk/table/post/format20.rb,
lib/ttfunk/table/post/format30.rb,
lib/ttfunk/table/post/format40.rb,
lib/ttfunk/table/cff/charstring.rb,
lib/ttfunk/table/cff/font_index.rb,
lib/ttfunk/table/cff/subr_index.rb,
lib/ttfunk/table/cff/fd_selector.rb,
lib/ttfunk/table/glyf/path_based.rb,
lib/ttfunk/table/cff/private_dict.rb,
lib/ttfunk/table/cff/charsets/expert.rb,
lib/ttfunk/table/cff/one_based_index.rb,
lib/ttfunk/table/cff/encodings/expert.rb,
lib/ttfunk/table/cff/charstrings_index.rb,
lib/ttfunk/table/cff/charsets/iso_adobe.rb,
lib/ttfunk/table/cff/encodings/standard.rb,
lib/ttfunk/table/cff/charsets/expert_subset.rb,
lib/ttfunk/table/cff/charsets/standard_strings.rb

Overview

SFNT table

Direct Known Subclasses

Cff, Cmap, Dsig, Glyf, Head, Hhea, Hmtx, Kern, Loca, Maxp, Name, OS2, Post, Sbix, Simple, Vorg

Defined Under Namespace

Classes: Cff, Cmap, Dsig, Glyf, Head, Hhea, Hmtx, Kern, Loca, Maxp, Name, OS2, Post, Sbix, Simple, Vorg

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ Table

Returns a new instance of Table.

Parameters:

Source Code
lib/ttfunk/table.rb, line 23
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def initialize(file)

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  @file = file

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  @offset = nil

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  @length = nil

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  info = file.directory_info(tag)

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  if info

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    @offset = info[:offset]

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    @length = info[:length]

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    parse_from(@offset) { parse! }

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  end

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end







  



  

    
Instance Attribute Details

    
      
      
      

  

  
    #file  ⇒ TTFunk::File  (readonly)
  

  

  


  

    
File this table is in.



  





  


Returns:







  Source Code
  
lib/ttfunk/table.rb, line 12

  
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def file

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  @file

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end







    
      
      
      

  

  
    #length  ⇒ Integer?  (readonly)
  

  

  


  

    
This table’s length in byes.



  





  


Returns:


    
  
    
  • 
      
      
        (Integer, nil)
      
      
      
    
    • 
  







  Source Code
  
lib/ttfunk/table.rb, line 20

  
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def length

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  @length

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end







    
      
      
      

  

  
    #offset  ⇒ Integer  (readonly)
  

  

  


  

    
This table’s offset from the file beginning.



  





  


Returns:


    
  
    
  • 
      
      
        (Integer)
      
      
      
    
    • 
  







  Source Code
  
lib/ttfunk/table.rb, line 16

  
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def offset

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  @offset

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end







    
  



  

    
Instance Method Details


    
      

  

  
    #exists?  ⇒ Boolean 
  

  

  


  

    
Does this table exist in the file?



  





  


Returns:


    
  
    
  • 
      
      
        (Boolean)
      
      
      
    
    • 
  







  Source Code
  
lib/ttfunk/table.rb, line 41

  
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def exists?

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  !@offset.nil?

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end







    
      

  

  
    #raw  ⇒ String? 
  

  

  


  

    
Raw bytes of this table in the file.



  





  


Returns:


    
  
    
  • 
      
      
        (String, nil)
      
      
      
    
    • 
  







  Source Code
  
lib/ttfunk/table.rb, line 48

  
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def raw

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  if exists?

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    parse_from(offset) { io.read(length) }

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  end

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end







    
      

  

  
    #tag  ⇒ String 
  

  

  


  

    
Table tag.



  





  


Returns:


    
  
    
  • 
      
      
        (String)
      
      
      
    
    • 
  







  Source Code
  
lib/ttfunk/table.rb, line 57

  
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def tag

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  self.class.name.split('::').last.downcase

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end