QRCode Canvas

by Sinh Nguyen

HTML

<div>
    qr code here: <span></span>
    <div id=qr></div>
</div>

JavaScript

q$(function() {
    var code = base32.encode('98fwefewvw');
    $('span').text(code);
    code = '7HTVKU3GSYDMCDHI';
    //alert(base32.decode(code));
    new QRCode($('#qr')[0], {
        text: 'otpauth://hotp/IRESS:Alice?counter=1&secret=' + code,
        width: 100,
        height: 100
    });
});

/**
 * @fileoverview
 * - Using the 'QRCode for Javascript library'
 * - Fixed dataset of 'QRCode for Javascript library' for support full-spec.
 * - this library has no dependencies.
 * 
 * @author davidshimjs
 * @see <a href="http://www.d-project.com/" target="_blank">http://www.d-project.com/</a>
 * @see <a href="http://jeromeetienne.github.com/jquery-qrcode/" target="_blank">http://jeromeetienne.github.com/jquery-qrcode/</a>
 */
var QRCode;

(function () {
	//---------------------------------------------------------------------
	// QRCode for JavaScript
	//
	// Copyright (c) 2009 Kazuhiko Arase
	//
	// URL: http://www.d-project.com/
	//
	// Licensed under the MIT license:
	//   http://www.opensource.org/licenses/mit-license.php
	//
	// The word "QR Code" is registered trademark of 
	// DENSO WAVE INCORPORATED
	//   http://www.denso-wave.com/qrcode/faqpatent-e.html
	//
	//---------------------------------------------------------------------
	function QR8bitByte(data) {
		this.mode = QRMode.MODE_8BIT_BYTE;
		this.data = data;
		this.parsedData = [];

		// Added to support UTF-8 Characters
		for (var i = 0, l = this.data.length; i < l; i++) {
			var byteArray = [];
			var code = this.data.charCodeAt(i);

			if (code > 0x10000) {
				byteArray[0] = 0xF0 | ((code & 0x1C0000) >>> 18);
				byteArray[1] = 0x80 | ((code & 0x3F000) >>> 12);
				byteArray[2] = 0x80 | ((code & 0xFC0) >>> 6);
				byteArray[3] = 0x80 | (code & 0x3F);
			} else if (code > 0x800) {
				byteArray[0] = 0xE0 | ((code & 0xF000) >>> 12);
				byteArray[1] = 0x80 | ((code & 0xFC0) >>> 6);
				byteArray[2] = 0x80 | (code & 0x3F);
			} else if (code > 0x80) {
				byteArray[0] = 0xC0 | ((code & 0x7C0)...