Otto Hirr > PDF-API3-3.001 > PDF::API3::Compat::API2::Basic::TTF::Head

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NAME ^

PDF::API3::Compat::API2::Basic::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 PDF::API3::Compat::API2::Basic::TTF::Font for copyright and licensing.

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