good pdf, some general updates

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

diff --git a/librarian/font-optimizer/ext/Font-TTF/lib/Font/TTF/Bsln.pm b/librarian/font-optimizer/ext/Font-TTF/lib/Font/TTF/Bsln.pm
new file mode 100644 (file)
index 0000000..281a512
--- /dev/null
+++ b/librarian/font-optimizer/ext/Font-TTF/lib/Font/TTF/Bsln.pm
@@ -0,0 +1,163 @@
+package Font::TTF::Bsln;
+
+=head1 NAME
+
+Font::TTF::Bsln - Baseline table in a font
+
+=head1 DESCRIPTION
+
+=head1 INSTANCE VARIABLES
+
+=item version
+
+=item xformat
+
+=item defaultBaseline
+
+=item deltas
+
+=item stdGlyph
+
+=item ctlPoints
+
+=item lookupFormat
+
+=item lookup
+
+=head1 METHODS
+
+=cut
+
+use strict;
+use vars qw(@ISA);
+
+use Font::TTF::AATutils;
+use Font::TTF::Utils;
+require Font::TTF::Table;
+
+@ISA = qw(Font::TTF::Table);
+
+=head2 $t->read
+
+Reads the table into memory
+
+=cut
+
+sub read
+{
+    my ($self) = @_;
+    my ($dat, $fh);
+    
+    $self->SUPER::read or return $self;
+
+    $fh = $self->{' INFILE'};
+    $fh->read($dat, 8);
+    my ($version, $format, $defaultBaseline) = TTF_Unpack("vSS", $dat);
+
+    if ($format == 0 or $format == 1) {
+        $fh->read($dat, 64);
+        $self->{'deltas'} = [TTF_Unpack("s*", $dat)];
+    }
+    elsif ($format == 2 or $format == 3) {
+        $fh->read($dat, 2);
+        $self->{'stdGlyph'} = unpack("n", $dat);
+        $fh->read($dat, 64);
+        $self->{'ctlPoints'} = unpack("n*", $dat);
+    }
+    else {
+        die "unknown table format";
+    }
+    
+    if ($format == 1 or $format == 3) {
+        my $len = $self->{' LENGTH'} - ($fh->tell() - $self->{' OFFSET'});
+        my ($lookupFormat, $lookup) = AAT_read_lookup($fh, 2, $len, $defaultBaseline);
+        $self->{'lookupFormat'} = $lookupFormat;
+        $self->{'lookup'} = $lookup;
+    }
+
+    $self->{'version'} = $version;
+    $self->{'format'} = $format;
+    $self->{'defaultBaseline'} = $defaultBaseline;
+
+    $self;
+}
+
+=head2 $t->out($fh)
+
+Writes the table to a file either from memory or by copying
+
+=cut
+
+sub out
+{
+    my ($self, $fh) = @_;
+    
+    return $self->SUPER::out($fh) unless $self->{' read'};
+
+    my $format = $self->{'format'};
+    my $defaultBaseline = $self->{'defaultBaseline'};
+    $fh->print(TTF_Pack("vSS", $self->{'version'}, $format, $defaultBaseline));
+
+    AAT_write_lookup($fh, $self->{'lookupFormat'}, $self->{'lookup'}, 2, $defaultBaseline) if ($format == 1 or $format == 3);
+}
+
+=head2 $t->print($fh)
+
+Prints a human-readable representation of the table
+
+=cut
+
+sub print
+{
+    my ($self, $fh) = @_;
+
+    $self->read;
+        
+    $fh = 'STDOUT' unless defined $fh;
+    
+    my $format = $self->{'format'};
+    $fh->printf("version %f\nformat %d\ndefaultBaseline %d\n", $self->{'version'}, $format, $self->{'defaultBaseline'});
+    if ($format == 0 or $format == 1) {
+        $fh->printf("\tdeltas:\n");
+        my $deltas = $self->{'deltas'};
+        foreach (0 .. 31) {
+            $fh->printf("\t\t%d: %d%s\n", $_, $deltas->[$_], defined baselineName_($_) ? "\t# " . baselineName_($_) : "");
+        }
+    }
+    if ($format == 2 or $format == 3) {
+        $fh->printf("\tstdGlyph = %d\n", $self->{'stdGlyph'});
+        my $ctlPoints = $self->{'ctlPoints'};
+        foreach (0 .. 31) {
+            $fh->printf("\t\t%d: %d%s\n", $_, $ctlPoints->[$_], defined baselineName_($_) ? "\t# " . baselineName_($_) : "");
+        }
+    }
+    if ($format == 1 or $format == 3) {
+        $fh->printf("lookupFormat %d\n", $self->{'lookupFormat'});
+        my $lookup = $self->{'lookup'};
+        foreach (sort { $a <=> $b } keys %$lookup) {
+            $fh->printf("\tglyph %d: %d%s\n", $_, $lookup->{$_}, defined baselineName_($_) ? "\t# " . baselineName_($_) : "");
+        }
+    }
+}
+
+sub baselineName_
+{
+    my ($b) = @_;
+    my @baselines = ( 'Roman', 'Ideographic centered', 'Ideographic low', 'Hanging', 'Math' );
+    $baselines[$b];
+}
+
+1;
+
+
+=head1 BUGS
+
+None known
+
+=head1 AUTHOR
+
+Jonathan Kew L<Jonathan_Kew@sil.org>. See L<Font::TTF::Font> for copyright and
+licensing.
+
+=cut
+