/usr/share/perl5/Font/TTF/Hdmx.pm is in libfont-ttf-perl 1.06-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 | package Font::TTF::Hdmx;
=head1 NAME
Font::TTF::Hdmx - Horizontal device metrics
=head1 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).
=head1 INSTANCE VARIABLES
Individual metrics are accessed using the following referencing:
$f->{'hdmx'}{$ppem}[$glyph_num]
In addition there is one instance variable:
=over 4
=item Num
Number of device tables.
=back
=head2 METHODS
=cut
use strict;
use vars qw(@ISA);
@ISA = qw(Font::TTF::Table);
=head2 $t->read
Reads the table into data structures
=cut
sub read
{
my ($self) = @_;
$self->SUPER::read or return $self;
my ($fh) = $self->{' INFILE'};
my ($numg, $ppem, $i, $numt, $dat, $len);
$numg = $self->{' PARENT'}{'maxp'}{'numGlyphs'};
$fh->read($dat, 8);
($self->{'Version'}, $numt, $len) = unpack("nnN", $dat);
$self->{'Num'} = $numt;
for ($i = 0; $i < $numt; $i++)
{
$fh->read($dat, $len);
$ppem = unpack("C", $dat);
$self->{$ppem} = [unpack("C$numg", substr($dat, 2))];
}
$self;
}
=head2 $t->out($fh)
Outputs the device metrics for this font
=cut
sub out
{
my ($self, $fh) = @_;
my ($numg, $i, $pad, $len, $numt, @ppem, $max);
return $self->SUPER::out($fh) unless ($self->{' read'});
$numg = $self->{' PARENT'}{'maxp'}{'numGlyphs'};
@ppem = grep(/^\d+$/, sort {$a <=> $b} keys %$self);
$pad = "\000" x (3 - ($numg + 1) % 4);
$len = $numg + 2 + length($pad);
$fh->print(pack("nnN", 0, $#ppem + 1, $len));
for $i (@ppem)
{
$max = 0;
foreach (@{$self->{$i}}[0..($numg - 1)])
{ $max = $_ if $_ > $max; }
$fh->print(pack("C*", $i, $max, @{$self->{$i}}[0..($numg - 1)]) . $pad);
}
$self;
}
=head2 $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.
=cut
sub minsize
{
return 8;
}
=head2 $t->tables_do(&func)
For each subtable it calls &sub($ref, $ppem)
=cut
sub tables_do
{
my ($self, $func) = @_;
my ($i);
foreach $i (grep(/^\d+$/, %$self))
{ &$func($self->{$i}, $i); }
$self;
}
=head2 $t->XML_element($context, $depth, $key, $value)
Outputs device metrics a little more tidily
=cut
sub XML_element
{
my ($self) = shift;
my ($context, $depth, $key, $value) = @_;
my ($fh) = $context->{'fh'};
my ($i);
return $self->SUPER::XML_element(@_) if (ref($value) ne 'ARRAY');
$fh->print("$depth<metrics ppem='$key'>\n");
for ($i = 0; $i <= $#{$value}; $i += 25)
{
$fh->print("$depth$context->{'indent'}". join(' ', @{$value}[$i .. $i + 24]) . "\n");
}
$fh->print("$depth</metrics>\n");
$self;
}
1;
=head1 BUGS
None known
=head1 AUTHOR
Martin Hosken L<http://scripts.sil.org/FontUtils>.
=head1 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.
=cut
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