NAME

       Font::TTF::Head - The head table for a TTF Font

DESCRIPTION

       This is a very basic table with just instance variables as described in the TTF
       documentation, using the same names. One of the most commonly used is "unitsPerEm".

INSTANCE VARIABLES

       The "head" table has no internal instance variables beyond those common to all tables and
       those specified in the standard:

           version
           fontRevision
           checkSumAdjustment
           magicNumber
           flags
           unitsPerEm
           created
           modified
           xMin
           yMin
           xMax
           yMax
           macStyle
           lowestRecPPEM
           fontDirectionHint
           indexToLocFormat
           glyphDataFormat

       The two dates are held as an array of two unsigned longs (32-bits)

METHODS

   $t->read
       Reads the table into memory thanks to some utility functions

   $t->out($fh)
       Writes the table to a file either from memory or by copying. If in memory (which is
       usually) the checkSumAdjustment field is set to 0 as per the default if the file checksum
       is not to be considered.

   $t->minsize()
       Returns the minimum size this table can be. If it is smaller than this, then the table
       must be bad and should be deleted or whatever.

   $t->XML_element($context, $depth, $key, $value)
       Handles date process for the XML exporter

   $t->update
       Updates the head table based on the glyph data and the hmtx table

   $t->getdate($is_create)
       Converts font modification time (or creation time if $is_create is set) to a 32-bit
       integer as returned from time(). Returns undef if the value is out of range, either before
       the epoch or after the maximum storable time.

   $t->setdate($time, $is_create)
       Sets the time information for modification (or creation time if $is_create is set)
       according to the 32-bit time information.

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.