Barcode - version 1.3 Thu Sep 21 7:30:30 EDT 2000
Creates a barcode image as a png file object. Currently only does type Code 128 (B or C). Also decodes scans from the CueCat scanner. This module
is part of the CueCat Project.
use Barcode;
Class Code128
# create a Code 128 barcode
my $barcode = Code128->new($bar_code,$quiet_zone,$polarity,$density,
$dpi,$image_type,$description);
where: $bar_code = string to be barcoded
$quiet_zone = number of clear x-dimensions each end
$polarity = bw (black on white) or wb (white on black)
$density = width of individual bars in .001 inch
$dpi = resolution of target printer
$image_type = 'transparent' or 'interlaced't
$description = optional description
Returns the png file in $barcode->{'png_file'}.
Class CodeISBN Constructs the ISBN number from the raw barcode value on an ISBN barcode (this is the number found above the ISBN barcode).
# return the ISBN number after previously decoding the barcode
my $isbn = CodeISBN->encode($scan->{'barcode_data'});
Returns $isbn->{'isbn_value'}.
Class Cuecat Two decode methods are provided: decode and kdecode.
CueCat->decode uses a perl decode routine on raw scan data from the CueCat. This method is NOT recommended on linux or any system using X-Windows due to the initial Alt-F10 sequence sent by the CueCat. It will work on a regular text console however, provided you do not have a virtual terminal set up on tty10.
CueCat->kdecode is a binding to the linux CueCat kernel driver and is the recommended method on linux. The kernel driver is available at http://oss.lineo.com/cuecat/.
# decode a barcode with the decode method my $scan = CueCat->decode($scan_string);
# decode a barcode with the kdecode method my $scan = CueCat->kdecode;
Returns $scan->{'barcode_type'} $scan->{'barcode_data'} and
$scan->{'cuecat_ser_no'} in either method. If you call CueCat->kdecode
inside a loop you must destroy the object created by calling
$scan->destroy($scan->{'pid'}) before returning to the start of the
loop.
Creates a barcode image as a png object which you can then print or save to a file and decodes barcode scans from the CueCat scanner <www.cuecat.com>.
Currently only creates type Code 128 barcodes. If the data string is an odd length or contains non-digit characters, Code B is used, otherwise Code C.
For more information on barcodes see BarCode1 http://www.adams1.com/pub/russadam/barcode1.html.
D. Scott Barninger <[email protected]> http://www.b-wdesigngroup.com License: licensed under the same terms as Perl (Artistic License).
Based upon work by
Carl Sewell <[email protected]> http://home.hiwaay.net/~csewell/
Greg Kearney <[email protected]> http://www.new-sharon.me.us/upc.html
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