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.
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rQRCode is a standalone library It requires no other libraries. Just Ruby!
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It is an encoding library. You can't decode QR codes with it.
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The interface is simple and assumes you just want to encode a string into a QR code
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QR code is trademarked by Denso Wave inc
Resources¶ ↑
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wikipedia:: en.wikipedia.org/wiki/QR_Code
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Denso-Wave website:: www.denso-wave.com/qrcode/index-e.html
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kaywa:: qrcode.kaywa.com
Installing¶ ↑
You may get the latest stable version from Rubygems.
gem install rqrcode
You can also get the latest source from github.com/whomwah/rqrcode
git clone git://github.com/whomwah/rqrcode.git
Tests¶ ↑
To run the tests:
$ rake
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:
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Vladislav Gorodetskiy
Contributing¶ ↑
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Fork the project
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Send a pull request
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Don't touch the .gemspec, I'll do that when I release a new version
Copyright¶ ↑
MIT Licence (www.opensource.org/licenses/mit-license.html)