Bio::Graphics::Glyph::three_letters - DAS-compatible package to use for drawing a line of groups of three letters

Bio-Graphics documentation Contained in the Bio-Graphics distribution.

Index

Code Index:

NAME

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Bio::Graphics::Glyph::three_letters - DAS-compatible package to use for drawing a line of groups of three letters

SYNOPSIS

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

DESCRIPTION

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This glyph draws groups of three letters separated by horizontal lines.

OPTIONS

In addition to the common options, the following glyph-specific options are recognized:

  Option      Description                  Default
  ------      -----------                  -------
  -text       The three letters to show     "CAG"

  -width      Width of one letter group     20

  -interval   Interval between              10
              letter groups

BUGS

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Please report them.

SEE ALSO

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

AUTHOR

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Vsevolod (Simon) Ilyushchenko <simonf@cshl.edu>.

Copyright (c) 2004 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.

Bio-Graphics documentation Contained in the Bio-Graphics distribution. 
package Bio::Graphics::Glyph::three_letters;
# DAS-compatible package to use for drawing a line of groups of three letters

# $Id: three_letters.pm,v 1.1 2008-12-08 23:18:43 lstein Exp $
# Non object-oriented utilities used here-and-there in Bio::Graphics modules


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

sub pad_top {
  my $self = shift;
  my $top = $self->SUPER::pad_top;
  my $extra = 0.2 * $self->font->height;
  return $top + $extra;
}

sub default_interval
{
  return 20;  
}

sub default_text
{
	return "CAG";
}

sub draw_repeating_shape
{
  my ($self, $gd, $x1, $y1, $x2, $y2, $fg) = @_;
  
  my $text = defined $self->option('text') ? $self->option('text') : $self->default_text();
  
  while (length $text < 3)
  {
    $text .= " ";  
  }
  
  $text = substr($text,0,3);
  my @letters = split //, $text;  
  
  my $oneThird = ($x2-$x1) / 3;
  my $secondLetterX = $x1 + $oneThird;
  my $thirdLetterX = $x1 + 2*$oneThird;

  my $font = $self->option('labelfont') || $self->font;
  $gd->string($font, $x1, $y2-$font->height, $letters[0], $self->fontcolor);
  $gd->string($font, $secondLetterX, $y2-1.7*$font->height, $letters[1], $self->fontcolor);
  $gd->string($font, $thirdLetterX, $y2-$font->height, $letters[2], $self->fontcolor);  
}

1;

__END__