————#=======================================================================
# ____ ____ _____ _ ____ ___ ____
# | _ \| _ \| ___| _ _ / \ | _ \_ _| |___ \
# | |_) | | | | |_ (_) (_) / _ \ | |_) | | __) |
# | __/| |_| | _| _ _ / ___ \| __/| | / __/
# |_| |____/|_| (_) (_) /_/ \_\_| |___| |_____|
#
# 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 $
#
#=======================================================================
package
PDF::API2::Basic::TTF::LTSH;
=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;
@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
->
(
pack
(
"nn"
, 0,
$numg
));
$fh
->
(
pack
(
"C$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