---
name: "PDF::API2::Basic::TTF::OldMort"
section: "3pm"
platform: "linux"
package: "libpdf-api2-perl"
version: "0.73-1"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/PDF::API2::Basic::TTF::OldMort"
---

# PDF::API2::Basic::TTF::OldMort(3pm)

Glyph Metamorphosis table in a font

## NAME

PDF::API2::Basic::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::Basic::TTF::Font for copyright and licensing.