1package Font::TTF::AATKern;
2
3=head1 NAME
4
5Font::TTF::AATKern - AAT Kern table
6
7=head1 METHODS
8
9=cut
10
11use strict;
12use vars qw(@ISA);
13use Font::TTF::Utils;
14use Font::TTF::AATutils;
15use Font::TTF::Kern::Subtable;
16
17@ISA = qw(Font::TTF::Table);
18
19=head2 $t->read
20
21Reads the table into memory
22
23=cut
24
25sub read
26{
27    my ($self) = @_;
28
29    $self->SUPER::read or return $self;
30
31    my ($dat, $fh, $numSubtables);
32    $fh = $self->{' INFILE'};
33
34    $fh->read($dat, 8);
35    ($self->{'version'}, $numSubtables) = TTF_Unpack("vL", $dat);
36
37    my $subtables = [];
38    foreach (1 .. $numSubtables) {
39        my $subtableStart = $fh->tell();
40
41        $fh->read($dat, 8);
42        my ($length, $coverage, $tupleIndex) = TTF_Unpack("LSS", $dat);
43        my $type = $coverage & 0x00ff;
44
45        my $subtable = Font::TTF::Kern::Subtable->create($type, $coverage, $length);
46        $subtable->read($fh);
47
48        $subtable->{'tupleIndex'} = $tupleIndex if $subtable->{'variation'};
49        $subtable->{' PARENT'} = $self;
50        push @$subtables, $subtable;
51    }
52
53    $self->{'subtables'} = $subtables;
54
55    $self;
56}
57
58=head2 $t->out($fh)
59
60Writes the table to a file either from memory or by copying
61
62=cut
63
64sub out
65{
66    my ($self, $fh) = @_;
67
68    return $self->SUPER::out($fh) unless $self->{' read'};
69
70    my $subtables = $self->{'subtables'};
71    $fh->print(TTF_Pack("vL", $self->{'version'}, scalar @$subtables));
72
73    foreach (@$subtables) {
74        $_->out($fh);
75    }
76}
77
78=head2 $t->print($fh)
79
80Prints a human-readable representation of the table
81
82=cut
83
84sub print
85{
86    my ($self, $fh) = @_;
87
88    $self->read unless $self->{' read'};
89
90    $fh = 'STDOUT' unless defined $fh;
91
92    $fh->printf("version %f\n", $self->{'version'});
93
94    my $subtables = $self->{'subtables'};
95    foreach (@$subtables) {
96        $_->print($fh);
97    }
98}
99
100sub dumpXML
101{
102    my ($self, $fh) = @_;
103    $self->read unless $self->{' read'};
104
105    my $post = $self->{' PARENT'}->{'post'};
106    $post->read;
107
108    $fh = 'STDOUT' unless defined $fh;
109    $fh->printf("<kern version=\"%f\">\n", $self->{'version'});
110
111    my $subtables = $self->{'subtables'};
112    foreach (@$subtables) {
113        $fh->printf("<%s", $_->type);
114        $fh->printf(" vertical=\"1\"") if $_->{'vertical'};
115        $fh->printf(" crossStream=\"1\"") if $_->{'crossStream'};
116        $fh->printf(" variation=\"1\"") if $_->{'variation'};
117        $fh->printf(" tupleIndex=\"%s\"", $_->{'tupleIndex'}) if exists $_->{'tupleIndex'};
118        $fh->printf(">\n");
119
120        $_->dumpXML($fh);
121
122        $fh->printf("</%s>\n", $_->type);
123    }
124
125    $fh->printf("</kern>\n");
126}
127
1281;
129
130=head1 BUGS
131
132None known
133
134=head1 AUTHOR
135
136Jonathan Kew L<http://scripts.sil.org/FontUtils>.
137
138
139=head1 LICENSING
140
141Copyright (c) 1998-2016, SIL International (http://www.sil.org)
142
143This module is released under the terms of the Artistic License 2.0.
144For details, see the full text of the license in the file LICENSE.
145
146
147
148=cut
149
150
151