Font::TTF::Coverage - phpMan

NAME
    Font::TTF::Coverage - Opentype coverage and class definition objects

DESCRIPTION
    Coverage tables and class definition objects are virtually identical
    concepts in OpenType. Their difference comes purely in their storage.
    Therefore we can say that a coverage table is a class definition in
    which the class definition for each glyph is the corresponding index in
    the coverage table. The resulting data structure is that a Coverage
    table has the following fields:

    cover
        A boolean to indicate whether this table is a coverage table (TRUE)
        or a class definition (FALSE)

    val A hash of glyph ids against values (either coverage index or class
        value)

    fmt The storage format used is given here, but is recalculated when the
        table is written out.

    count
        A count of the elements in a coverage table for use with add. Each
        subsequent addition is added with the current count and increments
        the count.

    max Maximum class value in a class table.

METHODS
  new($isCover [, vals])
    Creates a new coverage table or class definition table, depending upon
    the value of $isCover. if $isCover then vals may be a list of glyphs to
    include in order. If no $isCover, then vals is a hash of glyphs against
    class values.

  read($fh)
    Reads the coverage/class table from the given file handle

  out($fh, $state)
    Writes the coverage/class table to the given file handle. If $state is 1
    then the output string is returned rather than being output to a
    filehandle.

  $c->add($glyphid[, $class])
    Adds a glyph id to the coverage or class table. Returns the index or
    class number of the glyphid added.

  $c->signature
    Returns a vector of all the glyph ids covered by this coverage table or
    class

  @map=$c->sort
    Sorts the coverage table so that indexes are in ascending order of
    glyphid. Returns a map such that $map[$new_index]=$old_index.

  $c->out_xml($context)
    Outputs this coverage/class in XML

AUTHOR
    Martin Hosken <http://scripts.sil.org/FontUtils>.

LICENSING
    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.