Font::TTF::Hmtx

Section: User Contributed Perl Documentation (3)
Updated: 2020-07-28
Page Index
 

NAME

Font::TTF::Hmtx - Horizontal Metrics  

DESCRIPTION

Contains the advance width and left side bearing for each glyph. Given the compressability of the data onto disk, this table uses information from other tables, and thus must do part of its output during the output of other tables  

INSTANCE VARIABLES

The horizontal metrics are kept in two arrays by glyph id. The variable names do not start with a space
advance
An array containing the advance width for each glyph
lsb
An array containing the left side bearing for each glyph
 

METHODS

 

$t->read

Reads the horizontal metrics from the TTF file into memory  

$t->numMetrics

Calculates again the number of long metrics required to store the information here. Returns undef if the table has not been read.  

$t->out($fh)

Writes the metrics to a TTF file. Assumes that the "hhea" has updated the numHMetrics from here  

$t->update

Updates the lsb values from the xMin from the each glyph  

$t->out_xml($context, $depth)

Outputs the table in XML  

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.


 

Index

NAME
DESCRIPTION
INSTANCE VARIABLES
METHODS
$t->read
$t->numMetrics
$t->out($fh)
$t->update
$t->out_xml($context, $depth)
BUGS
AUTHOR
LICENSING