== rQRCode, Encode QRCodes rQRCode is a library for encoding QR Codes in Ruby. It has a simple interface with all the standard qrcode options. It was adapted from the Javascript library by Kazuhiko Arase. == An Overview Let's clear up some rQRCode stuff. # rQRCode is a *standalone library*. It requires no other libraries. Just Ruby! # It is an encoding library. You can't decode QR codes with it. # The interface is simple and assumes you just want to encode a string into a QR code # QR code is trademarked by Denso Wave inc == Resources wikipedia:: http://en.wikipedia.org/wiki/QR_Code Denso-Wave website:: http://www.denso-wave.com/qrcode/index-e.html kaywa:: http://qrcode.kaywa.com == Installing You may get the latest stable version from Rubyforge. $ gem install rqrcode You can also get the source from http://github.com/whomwah/rqrcode/tree/master $ git clone git://github.com/whomwah/rqrcode.git === Loading rQRCode Itself You have installed the gem already, yeah? require 'rubygems' require 'rqrcode' === Simple QRCode generation to screen qr = RQRCode::QRCode.new( 'my string to generate', :size => 4, :level => :h ) puts qr.to_s # # Prints: # xxxxxxx x x x x x xx xxxxxxx # x x xxx xxxxxx xxx x x # x xxx x xxxxx x xx x xxx x # ... etc === Simple QRCode generation to view (RubyOnRails) <b>Controller:</b> @qr = RQRCode::QRCode.new( 'my string to generate', :size => 4, :level => :h ) <b>View: (minimal styling added)</b> <style type="text/css"> table { border-width: 0; border-style: none; border-color: #0000ff; border-collapse: collapse; } td { border-width: 0; border-style: none; border-color: #0000ff; border-collapse: collapse; padding: 0; margin: 0; width: 10px; height: 10px; } td.black { background-color: #000; } td.white { background-color: #fff; } </style> <table> <% @qr.modules.each_index do |x| %> <tr> <% @qr.modules.each_index do |y| %> <% if @qr.dark?(x,y) %> <td class="black"/> <% else %> <td class="white"/> <% end %> <% end %> </tr> <% end %> </table> == Contact Author:: Duncan Robertson Email:: duncan@whomwah.com Home Page:: http://whomwah.com License:: MIT Licence (http://www.opensource.org/licenses/mit-license.html)