SYNOPSIS
ex. CGI
use GD::Barcode::UPCE;
binmode(STDOUT);
print "Content-Type: image/pngnn";
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 subclass of GD and allows you to create barcode image with GD. This module based on "Generate Barcode Ver 1.02 By Shisei Hanai 97/08/22".
From 1.14, you can use this module even if no GD (except plot method).
new
$oGdBar GD::Barcode::UPCE->new($sType, $sTxt);
Constructor. Creates GD::Barcode::$sType object for $sTxt.
plot()
$oGd $oGdBar->plot();
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 GD image with Height=>20 pixels, with no text.
barcode()
$sPtn $oGdBar->barcode();
returns barcode pattern in string with and 0. means black, means white.
ex.
my $oGdB GD::Barcode->new(UPCE, 123456789012);
my $sPtn $oGdB->barcode();
# $sPtn ;
$errStr
$GD::Barcode::errStr
has error message.
$text
$oGdBar->{$text}
has barcode text based on $sTxt specified in new method. |
