Class: Fontisan::Tables::CblcGlyphBitmapLocation

Inherits:
Struct
  • Object
show all
Defined in:
lib/fontisan/tables/cblc_glyph_bitmap_location.rb

Overview

Immutable value object locating one glyph's bitmap inside a CBDT table.

A CblcIndexSubTable produces one of these per glyph in its range. The subsetting pipeline reads them to know which CBDT byte range to retain, then computes fresh offsets for the subset output.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CblcGlyphBitmapLocation

Returns a new instance of CblcGlyphBitmapLocation.



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# File 'lib/fontisan/tables/cblc_glyph_bitmap_location.rb', line 22

def initialize(*)
  super
  freeze
end

Instance Attribute Details

#byte_length ⇒ Integer

Returns length of the bitmap block in CBDT.

Returns:

  • (Integer) —

    length of the bitmap block in CBDT



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# File 'lib/fontisan/tables/cblc_glyph_bitmap_location.rb', line 19

CblcGlyphBitmapLocation = Struct.new(:glyph_id, :image_format,
                                     :cbdt_offset, :byte_length,
                                     keyword_init: true) do
  def initialize(*)
    super
    freeze
  end
end

#cbdt_offset ⇒ Integer

Returns absolute byte offset within the source CBDT.

Returns:

  • (Integer) —

    absolute byte offset within the source CBDT



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# File 'lib/fontisan/tables/cblc_glyph_bitmap_location.rb', line 19

CblcGlyphBitmapLocation = Struct.new(:glyph_id, :image_format,
                                     :cbdt_offset, :byte_length,
                                     keyword_init: true) do
  def initialize(*)
    super
    freeze
  end
end

#glyph_id ⇒ Integer

Returns source glyph ID.

Returns:

  • (Integer) —

    source glyph ID



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# File 'lib/fontisan/tables/cblc_glyph_bitmap_location.rb', line 19

CblcGlyphBitmapLocation = Struct.new(:glyph_id, :image_format,
                                     :cbdt_offset, :byte_length,
                                     keyword_init: true) do
  def initialize(*)
    super
    freeze
  end
end

#image_format ⇒ Integer

Returns CBDT image format (e.g. 17, 18, 19).

Returns:

  • (Integer) —

    CBDT image format (e.g. 17, 18, 19)



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# File 'lib/fontisan/tables/cblc_glyph_bitmap_location.rb', line 19

CblcGlyphBitmapLocation = Struct.new(:glyph_id, :image_format,
                                     :cbdt_offset, :byte_length,
                                     keyword_init: true) do
  def initialize(*)
    super
    freeze
  end
end