HTML::Barcode - Perl library for generating barcodes as HTML
Other Perl
Latest commit c700317 Mar 24, 2016 @mstratman Incremented version


    HTML::Barcode - Render HTML representations of barcodes

      # HTML::Barcode::Code93 is just one example, there are others.
      my $code = HTML::Barcode::Code93->new(text => 'MONKEY');
      print $code->render;

    See the documentation for the specific types of barcodes for detailed

    This is a base class for creating HTML representations of barcodes. Do
    not use it directly. If you are looking to generate a barcode, please
    see one of the following modules instead:

  Known Types

    Here are the types of barcodes you can generate with this distribution.
    Others may exist, so try searching CPAN.

    HTML::Barcode::QRCode - Two dimensional QR codes.
    HTML::Barcode::DataMatrix - Two dimensional Data Matrix barcodes.
    HTML::Barcode::Code93 - Code 93 barcodes.
    HTML::Barcode::Code128 - Code 128 barcodes.

    To add a new type of barcode, create a subclass of either
    HTML::Barcode::1D for traditional barcodes, HTML::Barcode::2D for
    2-dimensional barcodes, or HTML::Barcode if neither of those suit your

    Use one of the existing modules as a starting point.

    Required methods for your subclass
        You need to either override this, or override the `render_barcode'
        method so it does not use this.

        This should return an arrayref of true and false values (for "on"
        and "off"), or an arrayref of arrayrefs (for 2D).

        It is not recommended to publish this method in your API.

    Other methods
        Feel free to override any other methods, or use method modifiers
        (`around', `before', `after') as you see fit.

  new (%attributes)

    Default constructor provided by Moose or Mouse, which can take values
    for any of the attributes.


    This is a convenience routine which returns `<style>...</style>' tags
    and the rendered barcode.

    If you are printing multiple barcodes or want to ensure your `style'
    tags are in your HTML headers, then you probably want to output the
    barcode and style separately with the render_barcode and css entries
    elsewhere in this document.


    Returns only the rendered barcode. You will need to provide stylesheets
    separately, either writing them yourself or using the output of css.


    Returns CSS needed to properly display your rendered barcode.

    These attributes can be passed to new, or used as accessors.


    Required - The information to put into the barcode.


    A CSS color value (e.g. '#000' or 'black') for the foreground. Default
    is '#000'.


    A CSS color value background. Default is '#fff'.


    A CSS value for the width of an individual bar. Default is '2px'.


    A CSS value for the height of an individual bar. Default is '100px'.


    Boolean. Indicates whether or not to render the text below the barcode.


    The value for the `class' attribute applied to any container tags in the
    HTML (e.g. `table' or `div'). `td' tags within the table will have
    either css_class_on or css_class_off classes applied to them.

    For example, if css_class is "barcode", you will get `<table
    class="barcode">' and its cells will be either `<td class="barcode_on">'
    or `<td class="barcode_off">'.


    Rather than rendering CSS stylesheets, embed the style information in
    HTML `style' attributes. You should not use this option without good
    reason, as it greatly increases the size of the generated markup, and
    makes it impossible to override with stylesheets.

    Mark A. Stratman, `<>'


    Copyright 2011 Mark A. Stratman.

    This program is free software; you can redistribute it and/or modify it
    under the terms of either: the GNU General Public License as published
    by the Free Software Foundation; or the Artistic License.

    See for more information.