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.\"
.IX Title "Font::TTF::Hdmx 3pm"
.TH Font::TTF::Hdmx 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.
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.nh
.SH "NAME"
Font::TTF::Hdmx \- Horizontal device metrics
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The table consists of an hash of device metric tables indexed by the ppem for
that subtable. Each subtable consists of an array of advance widths in pixels
for each glyph at that ppem (horizontally).
.SH "INSTANCE VARIABLES"
.IX Header "INSTANCE VARIABLES"
Individual metrics are accessed using the following referencing:
.PP
.Vb 1
\&    $f\->{\*(Aqhdmx\*(Aq}{$ppem}[$glyph_num]
.Ve
.PP
In addition there is one instance variable:
.IP "Num" 4
.IX Item "Num"
Number of device tables.
.SS "\s-1METHODS\s0"
.IX Subsection "METHODS"
.ie n .SS "$t\->read"
.el .SS "\f(CW$t\fP\->read"
.IX Subsection "$t->read"
Reads the table into data structures
.ie n .SS "$t\->out($fh)"
.el .SS "\f(CW$t\fP\->out($fh)"
.IX Subsection "$t->out($fh)"
Outputs the device metrics for this font
.ie n .SS "$t\->\fIminsize()\fP"
.el .SS "\f(CW$t\fP\->\fIminsize()\fP"
.IX Subsection "$t->minsize()"
Returns the minimum size this table can be. If it is smaller than this, then the table
must be bad and should be deleted or whatever.
.ie n .SS "$t\->tables_do(&func)"
.el .SS "\f(CW$t\fP\->tables_do(&func)"
.IX Subsection "$t->tables_do(&func)"
For each subtable it calls &sub($ref, \f(CW$ppem\fR)
.ie n .SS "$t\->XML_element($context, $depth, $key, $value)"
.el .SS "\f(CW$t\fP\->XML_element($context, \f(CW$depth\fP, \f(CW$key\fP, \f(CW$value\fP)"
.IX Subsection "$t->XML_element($context, $depth, $key, $value)"
Outputs device metrics a little more tidily
.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