Module: TTFunk::Table::Cmap::Format00
- Defined in:
- lib/ttfunk/table/cmap/format00.rb
Overview
Format 0: Byte encoding table.
This module conditionally extends Subtable.
Instance Attribute Summary collapse
-
#code_map ⇒ Array<Integer>
readonly
Code map.
-
#language ⇒ Integer
readonly
Language.
Class Method Summary collapse
-
.encode(charmap) ⇒ Hash
Encode the encoding record to format 0.
Instance Method Summary collapse
-
#[](code) ⇒ Integer
Get glyph ID for character code.
-
#supported? ⇒ true
Is this encoding record format supported?.
Instance Attribute Details
#code_map ⇒ Array<Integer> (readonly)
Code map.
Source Code
lib/ttfunk/table/cmap/format00.rb, line 16
16 | def code_map |
17 | @code_map
|
18 | end
|
#language ⇒ Integer (readonly)
Language.
Source Code
lib/ttfunk/table/cmap/format00.rb, line 12
12 | def language |
13 | @language
|
14 | end
|
Class Method Details
.encode(charmap) ⇒ Hash
Encode the encoding record to format 0.
Source Code
lib/ttfunk/table/cmap/format00.rb, line 30
30 | def self.encode(charmap) |
31 | next_id = 0 |
32 | glyph_indexes = Array.new(256, 0) |
33 | glyph_map = { 0 => 0 } |
34 | |
35 | new_map = |
36 | charmap.keys.sort.each_with_object({}) do |code, map| |
37 | glyph_map[charmap[code]] ||= next_id += 1 |
38 | map[code] = { old: charmap[code], new: glyph_map[charmap[code]] } |
39 | glyph_indexes[code] = glyph_map[charmap[code]] |
40 | map
|
41 | end
|
42 | |
43 | # format, length, language, indices
|
44 | subtable = [0, 262, 0, *glyph_indexes].pack('nnnC*') |
45 | |
46 | { charmap: new_map, subtable: subtable, max_glyph_id: next_id + 1 } |
47 | end
|
Instance Method Details
#[](code) ⇒ Integer
Get glyph ID for character code.
Source Code
lib/ttfunk/table/cmap/format00.rb, line 53
53 | def [](code) |
54 | @code_map[code] || 0 |
55 | end
|
#supported? ⇒ true
Is this encoding record format supported?
Source Code
lib/ttfunk/table/cmap/format00.rb, line 60
60 | def supported? |
61 | true
|
62 | end
|