GD::Barcode - Create barcode image with GD
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;
GD::Barcode is a subclass of GD and allows you to create barcode image with GD.
$oGdBar = GD::Barcode::UPCE->new($sType, $sTxt);
Constructor. Creates a GD::Barcode::$sType object for $sTxt.
$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.
$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 = '';
$GD::Barcode::errStr
has error message.
$oGdBar->{$text}
has barcode text based on $sTxt specified in new method.
Kawai Takanori GCD00051@nifty.ne.jp
GD GD::Barcode subclasses
To install GD::Barcode, copy and paste the appropriate command in to your terminal.
cpanm
cpanm GD::Barcode
CPAN shell
perl -MCPAN -e shell install GD::Barcode
For more information on module installation, please visit the detailed CPAN module installation guide.