1Barcode::UPCE(3)      User Contributed Perl Documentation     Barcode::UPCE(3)
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NAME

6       GD::Barcode::UPCE - Create UPC-E barcode image with GD
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SYNOPSIS

9       ex. CGI
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11         use GD::Barcode::UPCE;
12         binmode(STDOUT);
13         print "Content-Type: image/png\n\n";
14         print GD::Barcode::UPCE->new('123456')->plot->png;
15
16       with Error Check
17
18         my $oGdBar = GD::Barcode::UPCE->new('123456789');
19         die $GD::Barcode::UPCE::errStr unless($oGdBar);       #Invalid Length
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DESCRIPTION

22       GD::Barcode::UPCE is a subclass of GD::Barcode and allows you to create
23       UPC-E barcode image with GD.  This module based on "Generate Barcode
24       Ver 1.02 By Shisei Hanai 97/08/22".
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26   new
27       $oGdBar = GD::Barcode::UPCE->new($sTxt);
28
29       Constructor.  Creates a GD::Barcode::UPCE object for $sTxt.  $sTxt has
30       6 or 7 or 8 numeric characters([0-9]).  If $sTxt has 6 characters, this
31       module adds '0' at the front of $sTxt.  and calculates CD for you.  If
32       $sTxt has 7 characters, this module calaculates CD for you.
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34   plot()
35       $oGd = $oGdBar->plot([Height => $iHeight, NoText => 0 | 1]);
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37       creates GD object with barcode image for the $sTxt specified at new
38       method.  $iHeight is height of the image. If NoText is 1, the image has
39       no text image of $sTxt.
40
41        ex.
42         my $oGdB = GD::Barcode::UPCE->new('123456');
43         my $oGD = $oGdB->plot(NoText=>1, Height => 20);
44         # $sGD is a GD image with Height=>20 pixels, with no text.
45
46   barcode()
47       $sPtn = $oGdBar->barcode();
48
49       returns a barcode pattern in string with '1', 'G' and '0'.  '1' means
50       black, 'G' also means black but little bit long, '0' means white.
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52        ex.
53         my $oGdB = GD::Barcode::UPCE->new('123456');
54         my $sPtn = $oGdB->barcode();
55         # $sPtn = '';
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57   $errStr
58       $GD::Barcode::UPCE::errStr
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60       has error message.
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62   $text
63       $oGdBar->{$text}
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65       has barcode text based on $sTxt specified in new method.
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AUTHOR

68       Kawai Takanori GCD00051@nifty.ne.jp
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71       The GD::Barocde::UPCE module is Copyright (c) 2000 Kawai Takanori.
72       Japan.  All rights reserved.
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74       You may distribute under the terms of either the GNU General Public
75       License or the Artistic License, as specified in the Perl README file.
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SEE ALSO

78       GD::Barcode
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82perl v5.36.0                      2022-07-22                  Barcode::UPCE(3)
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