Linux Certif

Toute la documentation sur la certification Linux LPI

Font::TTF::Head.3pm

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.

$t->XML_element($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 Martin_Hosken@sil.org. See Font::TTF::Font for copyright and licensing.