# NAME

PDF::API2::TTF::OldMort - Glyph Metamorphosis table in a font

# DESCRIPTION

# INSTANCE VARIABLES

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:
type
setting
enable
disable
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:

# METHODS

## $t->read

Reads the table into memory

## $t->out($fh)

Writes the table to a file either from memory or by copying

## $t->print($fh)

Prints a human-readable representation of the table

# BUGS

None known

# AUTHOR

Jonathan Kew Jonathan_Kew@sil.org. See PDF::API2::TTF::Font for copyright and licensing.