barcode(3)

NAME

GD::Barcode - Create barcode image with GD

SYNOPSIS

ex. CGI
  use GD::Barcode::UPCE;
  binmode(STDOUT);
  print "Content-Type: image/png0;
  print                          GD::Barcode->new('EAN13',
'123456789012')->plot->png;
with Error Check
  my $oGdBar = GD::Barcode->new('EAN13', '12345678901');
  die  $GD::Barcode::errStr  unless($oGdBar);     #Invalid
Length
  $oGdBar->plot->png;

DESCRIPTION

GD::Barcode is a subclass of GD and allows you to create
barcode image with GD. This module based on "Generate
Barcode Ver 1.02 By Shisei Hanai 97/08/22".

new

$oGdBar = GD::Barcode::UPCE->new($sType, $sTxt);

Constructor. Creates a GD::Barcode::$sType object for
$sTxt.

plot()

$oGd = $oGdBar->plot([Height => $iHeight, NoText => 0 _ 1]);

creates GD object with barcode image for the $sTxt speci
fied at new method. $iHeight is height of the image. If NoText is 1, the image has no text image of $sTxt.

ex.

my $oGdB = GD::Barcode->new('EAN13', '123456789012');
my $oGD = $oGdB->plot(NoText=>1, Height => 20);
# $sGD is a GD image with Height=>20 pixels, with no

text.

barcode()

$sPtn = $oGdBar->barcode();

returns a barcode pattern in string with '1' and '0'. '1'
means black, '0' means white.

ex.

my $oGdB = GD::Barcode->new('UPCE', '123456789012');
my $sPtn = $oGdB->barcode();
# $sPtn = '';

$errStr

$GD::Barcode::errStr

has error message.

$text

$oGdBar->{$text}

has barcode text based on $sTxt specified in new method.

AUTHOR

Kawai Takanori GCD00051@nifty.ne.jp

COPYRIGHT

The GD::Barocde module is Copyright (c) 2000 Kawai
Takanori. Japan. All rights reserved.

You may distribute under the terms of either the GNU Gen
eral Public License or the Artistic License, as specified
in the Perl README file.

SEE ALSO

GD GD::Barcode subclasses

perl v5.8.0 2000-12-29 Barcode(3)