Uses Cairo to render a barcode to a number of formats: PNG, PS, EPS, PDF and SVG
Registers methods render_to_cairo_context, to_png, to_ps, to_eps, to_pdf and to_svg
Render the barcode onto a Cairo context
Render the barcode to an EPS document
Render the barcode to a PDF document
Render the barcode to a PNG image
Render the barcode to a PS document
Render the barcode to an SVG document
[Validate]