Add barcodes in webkit reports
==============================

Usage
-----
To embed a barcode image in a webkit report, use ``${helper.barcode(value)}``.
Depending on template filtering, you might need to force not to use any filter
by doing ``${helper.barcode(value) | u}``

The function is defined as:
  barcode(value, code='Code128', drawOpts=None, htmlAttrs=None)

Parameters
---------
value
  Value for barcode as expected by barcode type. Code128 takes a number or
  numeric string
code
  barcode type. ReportLab 2.5 has the following codes: Codabar, Code11,
  Code128, EAN13, EAN8, Extended39, Extended93, FIM, I2of5, MSI, POSTNET, QR,
  Standard39, Standard93, USPS_4State
drawOpts
  dictionary of options for reportlab graphic. Depends on barcode type. Use
  *format* to specify image format (default png), *width* to specify image
  width in pixels (int), *height* to specify image height in pixels (int)
htmlAttrs
  dictionary of html attributes

Requirements
------------
This module depends on reportlab and lxml, which are both part of the odoo
installation.

Contributors
------------
* Vincent Vinet (vincent.vinet@savoirfairelinux.com)