Font::TTF::OldMort - Glyph Metamorphosis table in a font
- version
- table version number (Fixed: currently 1.0)
- chains
- list of metamorphosis chains, each of which has its own fields:
- defaultFlags
- chain's default subfeature flags (UInt32)
- featureEntries
- list of feature entries, each of which has fields:
- subtables
- list of metamorphosis subtables, each of which has fields:
- type
- subtable type (0: rearrangement; 1: contextual substitution; 2: ligature;
4: non-contextual substitution; 5: insertion)
- direction
- processing direction ('LR' or 'RL')
- orientation
- applies to text in which orientation ('VH', 'V', or 'H')
- subFeatureFlags
- the subfeature flags controlling whether the table is used (UInt32)
Further fields depend on the type of subtable:
Rearrangement table:
- classes
- array of lists of glyphs
- states
- array of arrays of hashes{'nextState', 'flags'}
Contextual substitution table:
- classes
- array of lists of glyphs
- states
- array of array of hashes{'nextState', 'flags', 'actions'}, where
"actions" is an array of two elements
which are offsets to be added to [marked, current] glyph to get index into
"mappings" (or
"undef" if no mapping to be
applied)
- mappings
- list of glyph codes mapped to through the state table mappings
Ligature table:
Non-contextual substitution table:
Insertion table:
Reads the table into memory
Writes the table to a file either from memory or by copying
Prints a human-readable representation of the table
Jonathan Kew <http://scripts.sil.org/FontUtils>.
Copyright (c) 1998-2016, SIL International
(http://www.sil.org)
This module is released under the terms of the Artistic License
2.0. For details, see the full text of the license in the file LICENSE.