Skip to content
This repository

A Ruby library that encodes QR Codes

tag: v0.4.0

Fetching latest commit…

Octocat-spinner-32-eaf2f5

Cannot retrieve the latest commit at this time

Octocat-spinner-32 lib
Octocat-spinner-32 test
Octocat-spinner-32 .gitignore check in gemspec August 14, 2011
Octocat-spinner-32 CHANGELOG
Octocat-spinner-32 Gemfile update gem layout to include gemspec etc August 14, 2011
Octocat-spinner-32 LICENSE update gem layout to include gemspec etc August 14, 2011
Octocat-spinner-32 README.org
Octocat-spinner-32 Rakefile update gem layout to include gemspec etc August 14, 2011
Octocat-spinner-32 rqrcode.gemspec
README.org

rQRCode, Encode QRCodes

Overview

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.

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

Installing

You may get the latest stable version from Rubygems.

$ gem install rqrcode

You can also get the source from http://github.com/whomwah/rqrcode

$ 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 template (RubyOnRails)

# Controller
@qr = RQRCode::QRCode.new( 'my string to generate', :size => 4, :level => :h )

:

# View: (minimal styling added)
<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>

Authors

Original author: Duncan Robertson

Special thanks to the following people for submitting patches:

  • Gioele Barabucci
  • Rob la Lau
  • Chris Mowforth
  • Tore Darell
  • Vladislav Gorodetskiy

Contributing

  • Fork the project
  • Send a pull request
  • Don’t touch the .gemspec, I’ll do that when I release a new version

Copyright

MIT Licence (http://www.opensource.org/licenses/mit-license.html)

Something went wrong with that request. Please try again.