phpman > perldoc > Font::TTF::Loca(3pm)

NAME
    Font::TTF::Loca - the Locations table, which is intimately tied to the glyf table

DESCRIPTION
    The location table holds the directory of locations of each glyph within the glyf table. Due to
    this relationship and the unimportance of the actual locations when it comes to holding glyphs
    in memory, reading the location table results in the creation of glyph objects for each glyph
    and stores them here. So if you are looking for glyphs, do not look in the "glyf" table, look
    here instead.

    Things get complicated if you try to change the glyph list within the one table. The
    recommendation is to create another clean location object to replace this table in the font,
    ensuring that the old table is read first and to transfer or copy glyphs across from the read
    table to the new table.

INSTANCE VARIABLES
    The instance variables do not start with a space

    glyphs
        An array of glyph objects for each glyph.

    glyphtype
        A string containing the class name to create for each new glyph. If empty, defaults to
        Font::TTF::Glyph.

METHODS
  $t->new
    Creates a new location table making sure it has a glyphs array

  $t->read
    Reads the location table creating glyph objects (Font::TTF::Glyph) for each glyph allowing their
    later reading.

  $t->out($fh)
    Writes the location table out to $fh. Notice that not having read the location table implies
    that the glyf table has not been read either, so the numbers in the location table are still
    valid. Let's hope that "maxp/numGlyphs" and "head/indexToLocFmt" haven't changed otherwise we
    are in big trouble.

    The function uses the OUTLOC location in the glyph calculated when the glyf table was attempted
    to be output.

  $t->out_xml($context, $depth)
    No need to output a loca table, this is dynamically generated

  $t->glyphs_do(&func)
    Calls func for each glyph in this location table in numerical order:

        &func($glyph, $glyph_num)

BUGS
    None known

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.