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

6       GD::Barcode::UPCA - Create UPC-A barcode image with GD
7

SYNOPSIS

9       ex. CGI
10
11         use GD::Barcode::UPCA;
12         binmode(STDOUT);
13         print "Content-Type: image/png\n\n";
14         print GD::Barcode::UPCA->new('12345678901')->plot->png;
15
16       with Error Check
17
18         my $oGdBar = GD::Barcode::UPCA->new('123456789');
19         die $GD::Barcode::UPCA::errStr unless($oGdBar);       #Invalid Length
20

DESCRIPTION

22       GD::Barcode::UPCA is a subclass of GD::Barcode and allows you to create
23       UPC-A barcode image with GD.  This module based on "Generate Barcode
24       Ver 1.02 By Shisei Hanai 97/08/22".
25
26   new
27       $oGdBar = GD::Barcode::UPCA->new($sTxt);
28
29       Constructor.  Creates a GD::Barcode::UPCA object for $sTxt.  $sTxt has
30       11 or 12 numeric characters([0-9]).  If $sTxt has 11 characters, this
31       module calacurates CD for you.
32
33   plot()
34       $oGd = $oGdBar->plot([Height => $iHeight, NoText => 0 | 1]);
35
36       creates GD object with barcode image for the $sTxt specified at new
37       method.  $iHeight is height of the image. If NoText is 1, the image has
38       no text image of $sTxt.
39
40        ex.
41         my $oGdB = GD::Barcode::UPCA->new('12345678901');
42         my $oGD = $oGdB->plot(NoText=>1, Height => 20);
43         # $sGD is a GD image with Height=>20 pixels, with no text.
44
45   barcode()
46       $sPtn = $oGdBar->barcode();
47
48       returns a barcode pattern in string with '1', 'G' and '0'.  '1' means
49       black, 'G' also means black but little bit long, '0' means white.
50
51        ex.
52         my $oGdB = GD::Barcode::UPCA->new('12345678901');
53         my $sPtn = $oGdB->barcode();
54         # $sPtn = '';
55
56   $errStr
57       $GD::Barcode::UPCA::errStr
58
59       has error message.
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61   $text
62       $oGdBar->{$text}
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64       has barcode text based on $sTxt specified in new method.
65

AUTHOR

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

SEE ALSO

77       GD::Barcode
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81perl v5.34.0                      2021-07-22                  Barcode::UPCA(3)
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