Creates QR codes images

This library is fork of Sam Vincent rqrcode-rails3 https://github.com/samvincent/rqrcode-rails3 Dependes on mini_magic and rqrcode

This gem supports generating QR images in SVG, BMP, TIF, JPG, GIF and PNG format.

Installation

Add the following to your Gemfile.

gem 'qrcoder'

or

gem install qrcoder

How to use

Image method

If you use image method you must define output format.

Allowed formats are

* png 
* bmp 
* svg 
* jpg
* gif 
* tif

QRCode.image(text, output, options)

Examples

QRCode.image("some text", "/home/user/", :format => [:png, :svg], :filename => "simple_test" 
QRCode.image("some text", "/home/user/", :format => :png, :filename => "simple_test" , :unit => 12

SVG output

Return svg output

QRCode.svg(text, output, options)

Example

QRCode.svg("some text", "/home/user", :filename => "simple_test", :unit => 12) 

Other methods

You can use other methods

QRCode.bmp(text, output, options)
QRCode.png(text, output, options)
QRCode.jpg(text, output, options)
QRCode.tif(text, output, options)
QRCode.gif(text, output, options)

Options:

• :size – This controls how big the QR Code will be. The smallest size will be chosen by default. Set to maintain consistent size.
• :level – The error correction level, can be:
  • Level :l 7% of code can be restored
  • Level :m 15% of code can be restored
  • Level :q 25% of code can be restored
  • Level :h 30% of code can be restored (default :h)
• :offset – Padding around the QR Code (e.g. 10)
• :unit – How many pixels per module (e.g. 11)
• :fill – Background color (e.g "ffffff" or :white)
• :color – Foreground color for the code (e.g. "000000" or :black)

About

This library is fork of Sam Vincent rqrcode-rails3

QR codes are encoded by rqrcode