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1 package Bio::Graphics::Glyph::pinsertion;
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2 # package to use for drawing P insertion as a triangle
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3 # p insertion is a point (one base).
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4
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5 use strict;
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6 use GD;
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7 use vars '@ISA';
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8 @ISA = 'Bio::Graphics::Glyph::generic';
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9 use Bio::Graphics::Glyph::generic;
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10
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11 sub box {
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12 my $self = shift;
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13 my $half = $self->insertion_width/2;
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14 return ($self->left-$half,$self->top,$self->right+$half,$self->bottom);
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15 }
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16
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17 sub insertion_width {
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18 my $self = shift;
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19 return $self->option('insertion_width') || 6;
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20 }
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21
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22 # override draw method
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23 sub draw {
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24 my $self = shift;
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25
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26 my $gd = shift;
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27 my ($left,$top) = @_;
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28 my ($x1,$y1,$x2,$y2) = $self->calculate_boundaries(@_);
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29
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30 my $height = $self->height;
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31
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32 my $half = $self->insertion_width/2;
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33
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34 my $fill = $self->bgcolor;
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35
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36 my $poly = GD::Polygon->new;
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37
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38 if ($self->feature->strand > 0) { #plus strand
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39 $poly->addPt($x1 - $half, $y1);
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40 $poly->addPt($x1 + ($half), $y1);
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41 $poly->addPt($x1, $y2); #pointer down
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42 } else {
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43 $poly->addPt($x1, $y1); #pointer up
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44 $poly->addPt($x1 - $half, $y2);
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45 $poly->addPt($x1 + ($half), $y2);
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46 }
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47 $gd->filledPolygon($poly, $fill);
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48 $gd->polygon($poly, $fill);
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49
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50 # add a label if requested
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51 $self->draw_label($gd,$left,$top) if $self->option('label');
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52 $self->draw_description($gd,$left,$top) if $self->option('description');
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53 }
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54
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55
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56 1;
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57
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58 =head1 NAME
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59
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60 Bio::Graphics::Glyph::pinsertion - The "Drosophila P-element Insertion" glyph
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61
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62 =head1 SYNOPSIS
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63
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64 See L<Bio::Graphics::Panel> and L<Bio::Graphics::Glyph>.
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65
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66 =head1 DESCRIPTION
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67
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68 This glyph was designed to show P-element insertions in the Drosophila
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69 genome, but in fact is suitable for any type of zero-width feature.
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70 Also see the triangle glyph.
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71
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72 =head2 OPTIONS
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73
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74 In addition to the generic options, this glyph recognizes:
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75
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76 Option Name Description Default
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77 ----------- ----------- -------
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78
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79 -insertion_width Width of glyph in pixels 3
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80
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81 =head1 BUGS
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82
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83 Please report them.
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84
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85 =head1 SEE ALSO
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86
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87 L<Bio::Graphics::Panel>,
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88 L<Bio::Graphics::Glyph>,
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89 L<Bio::Graphics::Glyph::arrow>,
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90 L<Bio::Graphics::Glyph::cds>,
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91 L<Bio::Graphics::Glyph::crossbox>,
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92 L<Bio::Graphics::Glyph::diamond>,
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93 L<Bio::Graphics::Glyph::dna>,
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94 L<Bio::Graphics::Glyph::dot>,
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95 L<Bio::Graphics::Glyph::ellipse>,
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96 L<Bio::Graphics::Glyph::extending_arrow>,
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97 L<Bio::Graphics::Glyph::generic>,
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98 L<Bio::Graphics::Glyph::graded_segments>,
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99 L<Bio::Graphics::Glyph::heterogeneous_segments>,
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100 L<Bio::Graphics::Glyph::line>,
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101 L<Bio::Graphics::Glyph::pinsertion>,
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102 L<Bio::Graphics::Glyph::primers>,
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103 L<Bio::Graphics::Glyph::rndrect>,
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104 L<Bio::Graphics::Glyph::segments>,
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105 L<Bio::Graphics::Glyph::ruler_arrow>,
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106 L<Bio::Graphics::Glyph::toomany>,
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107 L<Bio::Graphics::Glyph::transcript>,
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108 L<Bio::Graphics::Glyph::transcript2>,
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109 L<Bio::Graphics::Glyph::translation>,
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110 L<Bio::Graphics::Glyph::triangle>,
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111 L<Bio::DB::GFF>,
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112 L<Bio::SeqI>,
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113 L<Bio::SeqFeatureI>,
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114 L<Bio::Das>,
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115 L<GD>
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116
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117 =head1 AUTHOR
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118
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119 Allen Day E<lt>day@cshl.orgE<gt>, Shengqiang Shu E<lt>sshu@bdgp.lbl.govE<gt>
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120
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121 Copyright (c) 2001 Cold Spring Harbor Laboratory, BDGP
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122
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123 This library is free software; you can redistribute it and/or modify
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124 it under the same terms as Perl itself. See DISCLAIMER.txt for
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125 disclaimers of warranty.
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126
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127 =cut
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