#=======================================================================
# ____ ____ _____ _ ____ ___ ____
# | _ \| _ \| ___| _ _ / \ | _ \_ _| |___ \
# | |_) | | | | |_ (_) (_) / _ \ | |_) | | __) |
# | __/| |_| | _| _ _ / ___ \| __/| | / __/
# |_| |____/|_| (_) (_) /_/ \_\_| |___| |_____|
#
# A Perl Module Chain to faciliate the Creation and Modification
# of High-Quality "Portable Document Format (PDF)" Files.
#
#=======================================================================
#
# THIS IS A REUSED PERL MODULE, FOR PROPER LICENCING TERMS SEE BELOW:
#
#
# Copyright Martin Hosken <Martin_Hosken@sil.org>
#
# No warranty or expression of effectiveness, least of all regarding
# anyone's safety, is implied in this software or documentation.
#
# This specific module is licensed under the Perl Artistic License.
#
#
# $Id: LTSH.pm,v 1.5 2004/06/15 09:13:37 fredo Exp $
#
#=======================================================================
=head1 NAME
PDF::API2::Basic::TTF::LTSH - Linear Threshold table
=head1 DESCRIPTION
Holds the linear threshold for each glyph. This is the ppem value at which a
glyph's metrics become linear. The value is set to 1 if a glyph's metrics are
always linear.
=head1 INSTANCE VARIABLES
=over 4
=item glyphs
An array of ppem values. One value per glyph
=back
=head1 METHODS
=cut
use strict;
use vars qw(@ISA);
@ISA = qw(PDF::API2::Basic::TTF::Table);
=head2 $t->read
Reads the table
=cut
sub read
{
my ($self) = @_;
my ($fh) = $self->{' INFILE'};
my ($numg, $dat);
$self->SUPER::read or return $self;
$fh->read($dat, 4);
($self->{'Version'}, $numg) = unpack("nn", $dat);
$self->{'Num'} = $numg;
$fh->read($dat, $numg);
$self->{'glyphs'} = [unpack("C$numg", $dat)];
$self;
}
=head2 $t->out($fh)
Outputs the LTSH to the given fh.
=cut
sub out
{
my ($self, $fh) = @_;
my ($numg) = $self->{' PARENT'}{'maxp'}{'numGlyphs'};
return $self->SUPER::out($fh) unless ($self->{' read'});
$fh->print(pack("nn", 0, $numg));
$fh->print(pack("C$numg", @{$self->{'glyphs'}}));
$self;
}
1;
=head1 BUGS
None known
=head1 AUTHOR
Martin Hosken Martin_Hosken@sil.org. See L<PDF::API2::Basic::TTF::Font> for copyright and
licensing.
=cut