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Manual Reference Pages  -  GD::BARCODE (3)

.ds Aq ’

NAME

GD::Barcode - Create barcode image with GD

CONTENTS

SYNOPSIS

ex. CGI



  use GD::Barcode::UPCE;
  binmode(STDOUT);
  print "Content-Type: image/png\n\n";
  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.

From 1.14, you can use this module even if no GD (except plot method).

    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 specified 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 = ;



CW$errStr

$GD::Barcode::errStr

has error message.

CW$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 General Public License or the Artistic License, as specified in the Perl README file.

SEE ALSO

GD GD::Barcode subclasses
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perl v5.20.3 BARCODE (3) 2004-04-24

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