Barcode::UPCA

Section: User Contributed Perl Documentation (3)
Updated: 2003-05-29
Page Index
 

NAME

GD::Barcode::UPCA - Create UPC-A barcode image with GD  

SYNOPSIS

ex. CGI

  use GD::Barcode::UPCA;
  binmode(STDOUT);
  print "Content-Type: image/png\n\n";
  print GD::Barcode::UPCA->new('12345678901')->plot->png;

with Error Check

  my $oGdBar = GD::Barcode::UPCA->new('123456789');
  die $GD::Barcode::UPCA::errStr unless($oGdBar);       #Invalid Length

 

DESCRIPTION

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

new

$oGdBar = GD::Barcode::UPCA->new($sTxt);

Constructor. Creates a GD::Barcode::UPCA object for $sTxt. $sTxt has 11 or 12 numeric characters([0-9]). If $sTxt has 11 characters, this module calacurates CD for you.  

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::UPCA->new('12345678901');
  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', 'G' and '0'. '1' means black, 'G' also means black but little bit long, '0' means white.

 ex.
  my $oGdB = GD::Barcode::UPCA->new('12345678901');
  my $sPtn = $oGdB->barcode();
  # $sPtn = '';

 

$errStr

$GD::Barcode::UPCA::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::UPCA 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::Barcode


 

Index

NAME
SYNOPSIS
DESCRIPTION
new
plot()
barcode()
$errStr
$text
AUTHOR
COPYRIGHT
SEE ALSO
LinuxReviews : manual page archive : man3pm