Barcode(3) User Contributed Perl Documentation Barcode(3)NAMEGD::Barcode - Create barcode image with GD
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;
DESCRIPTIONGD::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 = '';
$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 General Public
License or the Artistic License, as specified in the Perl README file.
SEE ALSO
GD GD::Barcode subclasses
perl v5.14.1 2004-04-24 Barcode(3)
