text_in_box documentation.

This glyph draws the specified text in a rectangular box. In addition to the common options, the following glyph-specific
options are recognized:

  Option      Description                  Default
  ------      -----------                  -------

  -text       The text to draw in the box    3'

  -text_pad   The number of pixels to offset 3
              the box

  -text_bgcolor                             none
              The background color of the box

sub draw_component {

  my $self = shift;
  my $gd = shift;
  my ($x1,$y1,$x2,$y2) = $self->calculate_boundaries(@_);
  
  my $fg = $self->fgcolor;
  
  my $font = $self->option('labelfont') || $self->font;
  
  my $text = defined $self->option('text') ? $self->option('text') : $self->default_text();
  my $text_pad = defined $self->option('text_pad') ? $self->option('text_pad') : $self->default_text_pad();
  
  my $width = $font->width * length $text;
  my $height = $font->height;

  my $midY = ($y2+$y1) / 2;

  my $poly_pkg = $self->polygon_package;
  
  my $polygon   = $poly_pkg->new();
  $polygon->addPt($x1,$midY-$height/2-$text_pad);
  $polygon->addPt($x1+$width+2*$text_pad,$midY-$height/2-$text_pad);
  $polygon->addPt($x1+$width+2*$text_pad,$midY+$height/2+$text_pad);
  $polygon->addPt($x1, $midY+$height/2+$text_pad);

  if (defined (my $bgcolor = $self->option('text_bgcolor')))
  {
    $gd->filledPolygon($polygon,$self->factory->translate_color($bgcolor));
  }

  $gd->polygon($polygon,$fg);
      
  $gd->string($font, $x1+$text_pad, $midY-$height/2, $text, $self->fontcolor);

}

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.

default_text	No description	Code
default_text_pad	No description	Code
draw_component	No description	Code