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File name : Fmtx.pm

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package Font::TTF::Fmtx;

=head1 NAME

Font::TTF::Fmtx - Font Metrics table

=head1 DESCRIPTION

This is a simple table with just standards specified instance variables

=head1 INSTANCE VARIABLES

version
    glyphIndex
    horizontalBefore
    horizontalAfter
    horizontalCaretHead
    horizontalCaretBase
    verticalBefore
    verticalAfter
    verticalCaretHead
    verticalCaretBase

=head1 METHODS

=cut

use strict;
use vars qw(@ISA %fields @field_info);

require Font::TTF::Table;
use Font::TTF::Utils;

@ISA = qw(Font::TTF::Table);
@field_info = (
    'version' => 'v',
    'glyphIndex' => 'L',
    'horizontalBefore' => 'c',
    'horizontalAfter' => 'c',
    'horizontalCaretHead' => 'c',
    'horizontalCaretBase' => 'c',
    'verticalBefore' => 'c',
    'verticalAfter' => 'c',
    'verticalCaretHead' => 'c',
    'verticalCaretBase' => 'c');

sub init
{
    my ($k, $v, $c, $i);
    for ($i = 0; $i < $#field_info; $i += 2)
    {
        ($k, $v, $c) = TTF_Init_Fields($field_info[$i], $c, $field_info[$i + 1]);
        next unless defined $k && $k ne "";
        $fields{$k} = $v;
    }
}

=head2 $t->read

Reads the table into memory as instance variables

=cut

sub read
{
    my ($self) = @_;
    my ($dat);

$self->SUPER::read or return $self;
    init unless defined $fields{'glyphIndex'};
    $self->{' INFILE'}->read($dat, 16);

TTF_Read_Fields($self, $dat, \%fields);
    $self;
}

=head2 $t->out($fh)

Writes the table to a file either from memory or by copying.

=cut

sub out
{
    my ($self, $fh) = @_;

return $self->SUPER::out($fh) unless $self->{' read'};

$fh->print(TTF_Out_Fields($self, \%fields, 16));
    $self;
}

=head1 BUGS

None known

=head1 AUTHOR

Jonathan Kew L<http://scripts.sil.org/FontUtils>.

=head1 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.

=cut