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.\" ========================================================================
.\"
.IX Title "Font::TTF::Hmtx 3pm"
.TH Font::TTF::Hmtx 3pm "2016-08-28" "perl v5.22.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
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.SH "NAME"
Font::TTF::Hmtx \- Horizontal Metrics
.SH "DESCRIPTION"
.IX Header "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
.SH "INSTANCE VARIABLES"
.IX Header "INSTANCE VARIABLES"
The horizontal metrics are kept in two arrays by glyph id. The variable names
do not start with a space
.IP "advance" 4
.IX Item "advance"
An array containing the advance width for each glyph
.IP "lsb" 4
.IX Item "lsb"
An array containing the left side bearing for each glyph
.SH "METHODS"
.IX Header "METHODS"
.ie n .SS "$t\->read"
.el .SS "\f(CW$t\fP\->read"
.IX Subsection "$t->read"
Reads the horizontal metrics from the \s-1TTF\s0 file into memory
.ie n .SS "$t\->numMetrics"
.el .SS "\f(CW$t\fP\->numMetrics"
.IX Subsection "$t->numMetrics"
Calculates again the number of long metrics required to store the information
here. Returns undef if the table has not been read.
.ie n .SS "$t\->out($fh)"
.el .SS "\f(CW$t\fP\->out($fh)"
.IX Subsection "$t->out($fh)"
Writes the metrics to a \s-1TTF\s0 file. Assumes that the \f(CW\*(C`hhea\*(C'\fR has updated the
numHMetrics from here
.ie n .SS "$t\->update"
.el .SS "\f(CW$t\fP\->update"
.IX Subsection "$t->update"
Updates the lsb values from the xMin from the each glyph
.ie n .SS "$t\->out_xml($context, $depth)"
.el .SS "\f(CW$t\fP\->out_xml($context, \f(CW$depth\fP)"
.IX Subsection "$t->out_xml($context, $depth)"
Outputs the table in \s-1XML\s0
.SH "BUGS"
.IX Header "BUGS"
None known
.SH "AUTHOR"
.IX Header "AUTHOR"
Martin Hosken <http://scripts.sil.org/FontUtils>.
.SH "LICENSING"
.IX Header "LICENSING"
Copyright (c) 1998\-2016, \s-1SIL\s0 International (http://www.sil.org)
.PP
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 \s-1LICENSE.\s0