Introduce src dir.

[librarian.git] / src / librarian / font-optimizer / ext / Font-TTF / lib / Font / TTF / LTSH.pm

diff --git a/src/librarian/font-optimizer/ext/Font-TTF/lib/Font/TTF/LTSH.pm b/src/librarian/font-optimizer/ext/Font-TTF/lib/Font/TTF/LTSH.pm
new file mode 100644 (file)
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+++ b/src/librarian/font-optimizer/ext/Font-TTF/lib/Font/TTF/LTSH.pm
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+package Font::TTF::LTSH;
+
+=head1 NAME
+
+Font::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);
+use Font::TTF::Table;
+
+@ISA = qw(Font::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<Font::TTF::Font> for copyright and
+licensing.
+
+=cut
+