Font::TTF::Hmtx

Section: User Contributed Perl Documentation (3)
Updated: 2021-01-27
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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

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.