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->update

Updates the head table based on the glyph data and the hmtx table

BUGS

None known

AUTHOR

Martin Hosken Martin_Hosken@sil.org. See Font::TTF::Font for copyright and licensing.