.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.43)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" Set up some character translations and predefined strings.  \*(-- will
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
.\" double quote, and \*(R" will give a right double quote.  \*(C+ will
.\" give a nicer C++.  Capital omega is used to do unbreakable dashes and
.\" therefore won't be available.  \*(C` and \*(C' expand to `' in nroff,
.\" nothing in troff, for use with C<>.
.tr \(*W-
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
.ie n \{\
.    ds -- \(*W-
.    ds PI pi
.    if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
.    if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\"  diablo 12 pitch
.    ds L" ""
.    ds R" ""
.    ds C` ""
.    ds C' ""
'br\}
.el\{\
.    ds -- \|\(em\|
.    ds PI \(*p
.    ds L" ``
.    ds R" ''
.    ds C`
.    ds C'
'br\}
.\"
.\" Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\"
.\" If the F register is >0, we'll generate index entries on stderr for
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
.\" entries marked with X<> in POD.  Of course, you'll have to process the
.\" output yourself in some meaningful fashion.
.\"
.\" Avoid warning from groff about undefined register 'F'.
.de IX
..
.nr rF 0
.if \n(.g .if rF .nr rF 1
.if (\n(rF:(\n(.g==0)) \{\
.    if \nF \{\
.        de IX
.        tm Index:\\$1\t\\n%\t"\\$2"
..
.        if !\nF==2 \{\
.            nr % 0
.            nr F 2
.        \}
.    \}
.\}
.rr rF
.\" ========================================================================
.\"
.IX Title "GD::Barcode 3pm"
.TH GD::Barcode 3pm "2023-11-03" "perl v5.36.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
GD::Barcode \- Create barcode image with GD
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fIex. \s-1CGI\s0\fR
.PP
.Vb 4
\&  use GD::Barcode::UPCE;
\&  binmode(STDOUT);
\&  print "Content\-Type: image/png\en\en";
\&  print GD::Barcode\->new(\*(AqEAN13\*(Aq, \*(Aq123456789012\*(Aq)\->plot\->png;
.Ve
.PP
\&\fIwith Error Check\fR
.PP
.Vb 3
\&  my $oGdBar = GD::Barcode\->new(\*(AqEAN13\*(Aq, \*(Aq12345678901\*(Aq);
\&  die $GD::Barcode::errStr unless($oGdBar);     #Invalid Length
\&  $oGdBar\->plot\->png;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
GD::Barcode is a subclass of \s-1GD\s0 and allows you to create barcode image with \s-1GD.\s0
This module based on \*(L"Generate Barcode Ver 1.02 By Shisei Hanai 97/08/22\*(R".
.PP
From 1.14, you can use this module even if no \s-1GD\s0 (except plot method).
.SS "new"
.IX Subsection "new"
\&\fI\f(CI$oGdBar\fI\fR = GD::Barcode::UPCE\->new(\fI\f(CI$sType\fI\fR, \fI\f(CI$sTxt\fI\fR);
.PP
Constructor.
Creates a GD::Barcode::\fI\f(CI$sType\fI\fR object for \fI\f(CI$sTxt\fI\fR.
.SS "\fBplot()\fP"
.IX Subsection "plot()"
\&\fI\f(CI$oGd\fI\fR = \f(CW$oGdBar\fR\->plot([Height => \fI\f(CI$iHeight\fI\fR, NoText => \fI0 | 1\fR]);
.PP
creates \s-1GD\s0 object with barcode image for the \fI\f(CI$sTxt\fI\fR specified at \*(L"new\*(R" method.
\&\fI\f(CI$iHeight\fI\fR is height of the image. If \fINoText\fR is 1, the image has no text image of \fI\f(CI$sTxt\fI\fR.
.PP
.Vb 4
\& ex.
\&  my $oGdB = GD::Barcode\->new(\*(AqEAN13\*(Aq, \*(Aq123456789012\*(Aq);
\&  my $oGD = $oGdB\->plot(NoText=>1, Height => 20);
\&  # $sGD is a GD image with Height=>20 pixels, with no text.
.Ve
.SS "\fBbarcode()\fP"
.IX Subsection "barcode()"
\&\fI\f(CI$sPtn\fI\fR = \f(CW$oGdBar\fR\->\fBbarcode()\fR;
.PP
returns a barcode pattern in string with '1' and '0'.
\&'1' means black, '0' means white.
.PP
.Vb 4
\& ex.
\&  my $oGdB = GD::Barcode\->new(\*(AqUPCE\*(Aq, \*(Aq123456789012\*(Aq);
\&  my $sPtn = $oGdB\->barcode();
\&  # $sPtn = \*(Aq\*(Aq;
.Ve
.ie n .SS "$errStr"
.el .SS "\f(CW$errStr\fP"
.IX Subsection "$errStr"
\&\f(CW$GD::Barcode::errStr\fR
.PP
has error message.
.ie n .SS "$text"
.el .SS "\f(CW$text\fP"
.IX Subsection "$text"
\&\f(CW$oGdBar\fR\->{$text}
.PP
has barcode text based on \fI\f(CI$sTxt\fI\fR specified in \*(L"new\*(R" method.
.SH "AUTHOR"
.IX Header "AUTHOR"
Kawai Takanori GCD00051@nifty.ne.jp
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
The GD::Barocde module is Copyright (c) 2000 Kawai Takanori. Japan.
All rights reserved.
.PP
You may distribute under the terms of either the \s-1GNU\s0 General Public
License or the Artistic License, as specified in the Perl \s-1README\s0 file.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\s-1GD\s0 GD::Barcode subclasses