Ace::Graphics::Glyph::ex - The "X" glyph

AcePerl documentation Contained in the AcePerl distribution.

Index

Code Index:

NAME

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Ace::Graphics::Glyph::ex - The "X" glyph

SYNOPSIS

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

DESCRIPTION

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This glyph draws an "X".

OPTIONS

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

  -point      Whether to draw an "X" the   feature width
              scaled width of the feature
              or with arm length point.

BUGS

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Please report them.

SEE ALSO

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Ace::Sequence, Ace::Sequence::Feature, Ace::Graphics::Panel, Ace::Graphics::Track, Ace::Graphics::Glyph::anchored_arrow, Ace::Graphics::Glyph::arrow, Ace::Graphics::Glyph::box, Ace::Graphics::Glyph::primers, Ace::Graphics::Glyph::segments, Ace::Graphics::Glyph::toomany, Ace::Graphics::Glyph::transcript,

AUTHOR

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Allen Day <day@cshl.org>.

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.

AcePerl documentation Contained in the AcePerl distribution. 
package Ace::Graphics::Glyph::ex;
# DAS-compatible package to use for drawing an "X"

use strict;
use vars '@ISA';
@ISA = 'Ace::Graphics::Glyph';

sub draw {
  my $self = shift;
  my $gd = shift;
  my $fg = $self->fgcolor;

  # now draw a cross
  my ($x1,$y1,$x2,$y2) = $self->calculate_boundaries(@_);
  my $fg = $self->fgcolor;

  if ($self->option('point')){
    my $p = $self->option('point');
    my $xmid = ($x1+$x2)/2;
    my $ymid = ($y1+$y2)/2;
    $gd->line($xmid-$p,$ymid-$p,$xmid+$p,$ymid+$p,$fg);
    $gd->line($xmid-$p,$ymid+$p,$xmid+$p,$ymid-$p,$fg);
  } else {
    $gd->line($x1,$y1,$x2,$y2,$fg);
    $gd->line($x1,$y2,$x2,$y1,$fg);
  }

  $self->draw_label($gd,@_) if $self->option('label');
}

1;

__END__