package Font::TTF::Cvt_; =head1 NAME Font::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 Font::TTF::Utils; @ISA = qw(Font::TTF::Table); $VERSION = 0.0001; =head2 $t->read Reads the CVT table into both the tables C<' dat'> variable and the C array. =cut sub read { my ($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 L. =head1 LICENSING Copyright (c) 1998-2013, SIL International ( 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