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#=======================================================================
# ____ ____ _____ _ ____ ___ ____
# | _ \| _ \| ___| _ _ / \ | _ \_ _| |___ \
# | |_) | | | | |_ (_) (_) / _ \ | |_) | | __) |
# | __/| |_| | _| _ _ / ___ \| __/| | / __/
# |_| |____/|_| (_) (_) /_/ \_\_| |___| |_____|
#
# 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: Cvt_.pm,v 1.5 2004/06/15 09:13:37 fredo Exp $
#
#=======================================================================
package PDF::API2::Basic::TTF::Cvt_;
=head1 NAME
PDF::API2::Basic::TTF::Cvt_ - Control Value Table in a TrueType font
=head1 DESCRIPTION
This is a minimal class adding nothing beyond a table, but is a repository
for cvt type information for those processes brave enough to address hinting.
=head1 INSTANCE VARIABLES
=over 4
=item val
This is an array of CVT values. Thus access to the CVT is via:
$f->{'cvt_'}{'val'}[$num];
=back
=head1 METHODS
=cut
use strict;
use vars qw(@ISA $VERSION);
use PDF::API2::Basic::TTF::Utils;
@ISA = qw(PDF::API2::Basic::TTF::Table);
$VERSION = 0.0001;
=head2 $t->read
Reads the CVT table into both the tables C<' dat'> variable and the C<val>
array.
=cut
sub read
{
my ($self) = @_;
$self->read_dat || return undef;
$self->{' read'} = 1;
$self->{'val'} = [TTF_Unpack("s*", $self->{' dat'})];
$self;
}
=head2 $t->update
Updates the RAM file copy C<' dat'> to be the same as the array.
=cut
sub update
{
my ($self) = @_;
return undef unless ($self->{' read'} && $#{$self->{'val'}} >= 0);
$self->{' dat'} = TTF_Pack("s*", @{$self->{'val'}});
$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
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