package Bio::Graphics::Glyph::segmented_keyglyph;

# Don't use this package.  It's just for inheriting the segmented glyph in the panel key.

use strict;
use base qw(Bio::Graphics::Glyph::generic);

sub make_key_feature {
  my $self = shift;
  my $scale = 1/$self->scale;  # base pairs/pixel
  # two segments, at pixels 0->50, 60->80
  my $offset = $self->panel->offset;
  my $feature =
    Bio::Graphics::Feature->new(
				-segments=>[ [ 0*$scale +$offset,50*$scale+$offset],
					     [60*$scale+$offset, 80*$scale+$offset]
					   ],
				-name => $self->make_key_name(),
				-strand => '+1',
			       );
}

1;

__END__

=head1 NAME

Bio::Graphics::Glyph::segmented_keyglyph - The "segmented_keyglyph" glyph

=head1 SYNOPSIS

  See L<Bio::Graphics::Panel> and L<Bio::Graphics::Glyph>.

=head1 DESCRIPTION

This glyph is used internally by Bio::Graphics::Panel as a base class
for drawing the keys at the bottom of the panel.  It should not be
used explicitly.

=head1 BUGS

Please report them.

=head1 SEE ALSO


L<Bio::Graphics::Panel>,
L<Bio::Graphics::Glyph>,
L<Bio::Graphics::Glyph::arrow>,
L<Bio::Graphics::Glyph::cds>,
L<Bio::Graphics::Glyph::crossbox>,
L<Bio::Graphics::Glyph::diamond>,
L<Bio::Graphics::Glyph::dna>,
L<Bio::Graphics::Glyph::dot>,
L<Bio::Graphics::Glyph::ellipse>,
L<Bio::Graphics::Glyph::extending_arrow>,
L<Bio::Graphics::Glyph::generic>,
L<Bio::Graphics::Glyph::graded_segments>,
L<Bio::Graphics::Glyph::heterogeneous_segments>,
L<Bio::Graphics::Glyph::line>,
L<Bio::Graphics::Glyph::pinsertion>,
L<Bio::Graphics::Glyph::primers>,
L<Bio::Graphics::Glyph::rndrect>,
L<Bio::Graphics::Glyph::segments>,
L<Bio::Graphics::Glyph::ruler_arrow>,
L<Bio::Graphics::Glyph::toomany>,
L<Bio::Graphics::Glyph::transcript>,
L<Bio::Graphics::Glyph::transcript2>,
L<Bio::Graphics::Glyph::translation>,
L<Bio::Graphics::Glyph::triangle>,
L<Bio::DB::GFF>,
L<Bio::SeqI>,
L<Bio::SeqFeatureI>,
L<Bio::Das>,
L<GD>

=head1 AUTHOR

Lincoln Stein E<lt>lstein@cshl.orgE<gt>

Copyright (c) 2001 Cold Spring Harbor Laboratory

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.  See DISCLAIMER.txt for
disclaimers of warranty.

=cut