auditor

qrious.js (71856B)

---

 /*
  * QRious v4.0.2
  * Copyright (C) 2017 Alasdair Mercer
  * Copyright (C) 2010 Tom Zerucha
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 (function (global, factory) {
   typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
   typeof define === 'function' && define.amd ? define(factory) :
   (global.QRious = factory());
 }(this, (function () { 'use strict';
 
   /*
    * Copyright (C) 2017 Alasdair Mercer, !ninja
    *
    * Permission is hereby granted, free of charge, to any person obtaining a copy
    * of this software and associated documentation files (the "Software"), to deal
    * in the Software without restriction, including without limitation the rights
    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    * copies of the Software, and to permit persons to whom the Software is
    * furnished to do so, subject to the following conditions:
    *
    * The above copyright notice and this permission notice shall be included in all
    * copies or substantial portions of the Software.
    *
    * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    * SOFTWARE.
    */
 
   /**
    * A bare-bones constructor for surrogate prototype swapping.
    *
    * @private
    * @constructor
    */
   var Constructor = /* istanbul ignore next */ function() {};
   /**
    * A reference to <code>Object.prototype.hasOwnProperty</code>.
    *
    * @private
    * @type {Function}
    */
   var hasOwnProperty = Object.prototype.hasOwnProperty;
   /**
    * A reference to <code>Array.prototype.slice</code>.
    *
    * @private
    * @type {Function}
    */
   var slice = Array.prototype.slice;
 
   /**
    * Creates an object which inherits the given <code>prototype</code>.
    *
    * Optionally, the created object can be extended further with the specified <code>properties</code>.
    *
    * @param {Object} prototype - the prototype to be inherited by the created object
    * @param {Object} [properties] - the optional properties to be extended by the created object
    * @return {Object} The newly created object.
    * @private
    */
   function createObject(prototype, properties) {
     var result;
     /* istanbul ignore next */
     if (typeof Object.create === 'function') {
       result = Object.create(prototype);
     } else {
       Constructor.prototype = prototype;
       result = new Constructor();
       Constructor.prototype = null;
     }
 
     if (properties) {
       extendObject(true, result, properties);
     }
 
     return result;
   }
 
   /**
    * Extends the constructor to which this method is associated with the <code>prototype</code> and/or
    * <code>statics</code> provided.
    *
    * If <code>name</code> is provided, it will be used as the class name and can be accessed via a special
    * <code>class_</code> property on the child constructor, otherwise the class name of the super constructor will be used
    * instead. The class name may also be used string representation for instances of the child constructor (via
    * <code>toString</code>), but this is not applicable to the <i>lite</i> version of Nevis.
    *
    * If <code>constructor</code> is provided, it will be used as the constructor for the child, otherwise a simple
    * constructor which only calls the super constructor will be used instead.
    *
    * The super constructor can be accessed via a special <code>super_</code> property on the child constructor.
    *
    * @param {string} [name=this.class_] - the class name to be used for the child constructor
    * @param {Function} [constructor] - the constructor for the child
    * @param {Object} [prototype] - the prototype properties to be defined for the child
    * @param {Object} [statics] - the static properties to be defined for the child
    * @return {Function} The child <code>constructor</code> provided or the one created if none was given.
    * @public
    */
   function extend(name, constructor, prototype, statics) {
     var superConstructor = this;
 
     if (typeof name !== 'string') {
       statics = prototype;
       prototype = constructor;
       constructor = name;
       name = null;
     }
 
     if (typeof constructor !== 'function') {
       statics = prototype;
       prototype = constructor;
       constructor = function() {
         return superConstructor.apply(this, arguments);
       };
     }
 
     extendObject(false, constructor, superConstructor, statics);
 
     constructor.prototype = createObject(superConstructor.prototype, prototype);
     constructor.prototype.constructor = constructor;
 
     constructor.class_ = name || superConstructor.class_;
     constructor.super_ = superConstructor;
 
     return constructor;
   }
 
   /**
    * Extends the specified <code>target</code> object with the properties in each of the <code>sources</code> provided.
    *
    * if any source is <code>null</code> it will be ignored.
    *
    * @param {boolean} own - <code>true</code> to only copy <b>own</b> properties from <code>sources</code> onto
    * <code>target</code>; otherwise <code>false</code>
    * @param {Object} target - the target object which should be extended
    * @param {...Object} [sources] - the source objects whose properties are to be copied onto <code>target</code>
    * @return {void}
    * @private
    */
   function extendObject(own, target, sources) {
     sources = slice.call(arguments, 2);
 
     var property;
     var source;
 
     for (var i = 0, length = sources.length; i < length; i++) {
       source = sources[i];
 
       for (property in source) {
         if (!own || hasOwnProperty.call(source, property)) {
           target[property] = source[property];
         }
       }
     }
   }
 
   var extend_1 = extend;
 
   /**
    * The base class from which all others should extend.
    *
    * @public
    * @constructor
    */
   function Nevis() {}
   Nevis.class_ = 'Nevis';
   Nevis.super_ = Object;
 
   /**
    * Extends the constructor to which this method is associated with the <code>prototype</code> and/or
    * <code>statics</code> provided.
    *
    * If <code>name</code> is provided, it will be used as the class name and can be accessed via a special
    * <code>class_</code> property on the child constructor, otherwise the class name of the super constructor will be used
    * instead. The class name may also be used string representation for instances of the child constructor (via
    * <code>toString</code>), but this is not applicable to the <i>lite</i> version of Nevis.
    *
    * If <code>constructor</code> is provided, it will be used as the constructor for the child, otherwise a simple
    * constructor which only calls the super constructor will be used instead.
    *
    * The super constructor can be accessed via a special <code>super_</code> property on the child constructor.
    *
    * @param {string} [name=this.class_] - the class name to be used for the child constructor
    * @param {Function} [constructor] - the constructor for the child
    * @param {Object} [prototype] - the prototype properties to be defined for the child
    * @param {Object} [statics] - the static properties to be defined for the child
    * @return {Function} The child <code>constructor</code> provided or the one created if none was given.
    * @public
    * @static
    * @memberof Nevis
    */
   Nevis.extend = extend_1;
 
   var nevis = Nevis;
 
   var lite = nevis;
 
   /**
    * Responsible for rendering a QR code {@link Frame} on a specific type of element.
    *
    * A renderer may be dependant on the rendering of another element, so the ordering of their execution is important.
    *
    * The rendering of a element can be deferred by disabling the renderer initially, however, any attempt get the element
    * from the renderer will result in it being immediately enabled and the element being rendered.
    *
    * @param {QRious} qrious - the {@link QRious} instance to be used
    * @param {*} element - the element onto which the QR code is to be rendered
    * @param {boolean} [enabled] - <code>true</code> this {@link Renderer} is enabled; otherwise <code>false</code>.
    * @public
    * @class
    * @extends Nevis
    */
   var Renderer = lite.extend(function(qrious, element, enabled) {
     /**
      * The {@link QRious} instance.
      *
      * @protected
      * @type {QRious}
      * @memberof Renderer#
      */
     this.qrious = qrious;
 
     /**
      * The element onto which this {@link Renderer} is rendering the QR code.
      *
      * @protected
      * @type {*}
      * @memberof Renderer#
      */
     this.element = element;
     this.element.qrious = qrious;
 
     /**
      * Whether this {@link Renderer} is enabled.
      *
      * @protected
      * @type {boolean}
      * @memberof Renderer#
      */
     this.enabled = Boolean(enabled);
   }, {
 
     /**
      * Draws the specified QR code <code>frame</code> on the underlying element.
      *
      * Implementations of {@link Renderer} <b>must</b> override this method with their own specific logic.
      *
      * @param {Frame} frame - the {@link Frame} to be drawn
      * @return {void}
      * @protected
      * @abstract
      * @memberof Renderer#
      */
     draw: function(frame) {},
 
     /**
      * Returns the element onto which this {@link Renderer} is rendering the QR code.
      *
      * If this method is called while this {@link Renderer} is disabled, it will be immediately enabled and rendered
      * before the element is returned.
      *
      * @return {*} The element.
      * @public
      * @memberof Renderer#
      */
     getElement: function() {
       if (!this.enabled) {
         this.enabled = true;
         this.render();
       }
 
       return this.element;
     },
 
     /**
      * Calculates the size (in pixel units) to represent an individual module within the QR code based on the
      * <code>frame</code> provided.
      *
      * Any configured padding will be excluded from the returned size.
      *
      * The returned value will be at least one, even in cases where the size of the QR code does not fit its contents.
      * This is done so that the inevitable clipping is handled more gracefully since this way at least something is
      * displayed instead of just a blank space filled by the background color.
      *
      * @param {Frame} frame - the {@link Frame} from which the module size is to be derived
      * @return {number} The pixel size for each module in the QR code which will be no less than one.
      * @protected
      * @memberof Renderer#
      */
     getModuleSize: function(frame) {
       var qrious = this.qrious;
       var padding = qrious.padding || 0;
       var pixels = Math.floor((qrious.size - (padding * 2)) / frame.width);
 
       return Math.max(1, pixels);
     },
 
     /**
      * Calculates the offset/padding (in pixel units) to be inserted before the QR code based on the <code>frame</code>
      * provided.
      *
      * The returned value will be zero if there is no available offset or if the size of the QR code does not fit its
      * contents. It will never be a negative value. This is done so that the inevitable clipping appears more naturally
      * and it is not clipped from all directions.
      *
      * @param {Frame} frame - the {@link Frame} from which the offset is to be derived
      * @return {number} The pixel offset for the QR code which will be no less than zero.
      * @protected
      * @memberof Renderer#
      */
     getOffset: function(frame) {
       var qrious = this.qrious;
       var padding = qrious.padding;
 
       if (padding != null) {
         return padding;
       }
 
       var moduleSize = this.getModuleSize(frame);
       var offset = Math.floor((qrious.size - (moduleSize * frame.width)) / 2);
 
       return Math.max(0, offset);
     },
 
     /**
      * Renders a QR code on the underlying element based on the <code>frame</code> provided.
      *
      * @param {Frame} frame - the {@link Frame} to be rendered
      * @return {void}
      * @public
      * @memberof Renderer#
      */
     render: function(frame) {
       if (this.enabled) {
         this.resize();
         this.reset();
         this.draw(frame);
       }
     },
 
     /**
      * Resets the underlying element, effectively clearing any previously rendered QR code.
      *
      * Implementations of {@link Renderer} <b>must</b> override this method with their own specific logic.
      *
      * @return {void}
      * @protected
      * @abstract
      * @memberof Renderer#
      */
     reset: function() {},
 
     /**
      * Ensures that the size of the underlying element matches that defined on the associated {@link QRious} instance.
      *
      * Implementations of {@link Renderer} <b>must</b> override this method with their own specific logic.
      *
      * @return {void}
      * @protected
      * @abstract
      * @memberof Renderer#
      */
     resize: function() {}
 
   });
 
   var Renderer_1 = Renderer;
 
   /**
    * An implementation of {@link Renderer} for working with <code>canvas</code> elements.
    *
    * @public
    * @class
    * @extends Renderer
    */
   var CanvasRenderer = Renderer_1.extend({
 
     /**
      * @override
      */
     draw: function(frame) {
       var i, j;
       var qrious = this.qrious;
       var moduleSize = this.getModuleSize(frame);
       var offset = this.getOffset(frame);
       var context = this.element.getContext('2d');
 
       context.fillStyle = qrious.foreground;
       context.globalAlpha = qrious.foregroundAlpha;
 
       for (i = 0; i < frame.width; i++) {
         for (j = 0; j < frame.width; j++) {
           if (frame.buffer[(j * frame.width) + i]) {
             context.fillRect((moduleSize * i) + offset, (moduleSize * j) + offset, moduleSize, moduleSize);
           }
         }
       }
     },
 
     /**
      * @override
      */
     reset: function() {
       var qrious = this.qrious;
       var context = this.element.getContext('2d');
       var size = qrious.size;
 
       context.lineWidth = 1;
       context.clearRect(0, 0, size, size);
       context.fillStyle = qrious.background;
       context.globalAlpha = qrious.backgroundAlpha;
       context.fillRect(0, 0, size, size);
     },
 
     /**
      * @override
      */
     resize: function() {
       var element = this.element;
 
       element.width = element.height = this.qrious.size;
     }
 
   });
 
   var CanvasRenderer_1 = CanvasRenderer;
 
   /* eslint no-multi-spaces: "off" */
 
 
 
   /**
    * Contains alignment pattern information.
    *
    * @public
    * @class
    * @extends Nevis
    */
   var Alignment = lite.extend(null, {
 
     /**
      * The alignment pattern block.
      *
      * @public
      * @static
      * @type {number[]}
      * @memberof Alignment
      */
     BLOCK: [
       0,  11, 15, 19, 23, 27, 31,
       16, 18, 20, 22, 24, 26, 28, 20, 22, 24, 24, 26, 28, 28, 22, 24, 24,
       26, 26, 28, 28, 24, 24, 26, 26, 26, 28, 28, 24, 26, 26, 26, 28, 28
     ]
 
   });
 
   var Alignment_1 = Alignment;
 
   /* eslint no-multi-spaces: "off" */
 
 
 
   /**
    * Contains error correction information.
    *
    * @public
    * @class
    * @extends Nevis
    */
   var ErrorCorrection = lite.extend(null, {
 
     /**
      * The error correction blocks.
      *
      * There are four elements per version. The first two indicate the number of blocks, then the data width, and finally
      * the ECC width.
      *
      * @public
      * @static
      * @type {number[]}
      * @memberof ErrorCorrection
      */
     BLOCKS: [
       1,  0,  19,  7,     1,  0,  16,  10,    1,  0,  13,  13,    1,  0,  9,   17,
       1,  0,  34,  10,    1,  0,  28,  16,    1,  0,  22,  22,    1,  0,  16,  28,
       1,  0,  55,  15,    1,  0,  44,  26,    2,  0,  17,  18,    2,  0,  13,  22,
       1,  0,  80,  20,    2,  0,  32,  18,    2,  0,  24,  26,    4,  0,  9,   16,
       1,  0,  108, 26,    2,  0,  43,  24,    2,  2,  15,  18,    2,  2,  11,  22,
       2,  0,  68,  18,    4,  0,  27,  16,    4,  0,  19,  24,    4,  0,  15,  28,
       2,  0,  78,  20,    4,  0,  31,  18,    2,  4,  14,  18,    4,  1,  13,  26,
       2,  0,  97,  24,    2,  2,  38,  22,    4,  2,  18,  22,    4,  2,  14,  26,
       2,  0,  116, 30,    3,  2,  36,  22,    4,  4,  16,  20,    4,  4,  12,  24,
       2,  2,  68,  18,    4,  1,  43,  26,    6,  2,  19,  24,    6,  2,  15,  28,
       4,  0,  81,  20,    1,  4,  50,  30,    4,  4,  22,  28,    3,  8,  12,  24,
       2,  2,  92,  24,    6,  2,  36,  22,    4,  6,  20,  26,    7,  4,  14,  28,
       4,  0,  107, 26,    8,  1,  37,  22,    8,  4,  20,  24,    12, 4,  11,  22,
       3,  1,  115, 30,    4,  5,  40,  24,    11, 5,  16,  20,    11, 5,  12,  24,
       5,  1,  87,  22,    5,  5,  41,  24,    5,  7,  24,  30,    11, 7,  12,  24,
       5,  1,  98,  24,    7,  3,  45,  28,    15, 2,  19,  24,    3,  13, 15,  30,
       1,  5,  107, 28,    10, 1,  46,  28,    1,  15, 22,  28,    2,  17, 14,  28,
       5,  1,  120, 30,    9,  4,  43,  26,    17, 1,  22,  28,    2,  19, 14,  28,
       3,  4,  113, 28,    3,  11, 44,  26,    17, 4,  21,  26,    9,  16, 13,  26,
       3,  5,  107, 28,    3,  13, 41,  26,    15, 5,  24,  30,    15, 10, 15,  28,
       4,  4,  116, 28,    17, 0,  42,  26,    17, 6,  22,  28,    19, 6,  16,  30,
       2,  7,  111, 28,    17, 0,  46,  28,    7,  16, 24,  30,    34, 0,  13,  24,
       4,  5,  121, 30,    4,  14, 47,  28,    11, 14, 24,  30,    16, 14, 15,  30,
       6,  4,  117, 30,    6,  14, 45,  28,    11, 16, 24,  30,    30, 2,  16,  30,
       8,  4,  106, 26,    8,  13, 47,  28,    7,  22, 24,  30,    22, 13, 15,  30,
       10, 2,  114, 28,    19, 4,  46,  28,    28, 6,  22,  28,    33, 4,  16,  30,
       8,  4,  122, 30,    22, 3,  45,  28,    8,  26, 23,  30,    12, 28, 15,  30,
       3,  10, 117, 30,    3,  23, 45,  28,    4,  31, 24,  30,    11, 31, 15,  30,
       7,  7,  116, 30,    21, 7,  45,  28,    1,  37, 23,  30,    19, 26, 15,  30,
       5,  10, 115, 30,    19, 10, 47,  28,    15, 25, 24,  30,    23, 25, 15,  30,
       13, 3,  115, 30,    2,  29, 46,  28,    42, 1,  24,  30,    23, 28, 15,  30,
       17, 0,  115, 30,    10, 23, 46,  28,    10, 35, 24,  30,    19, 35, 15,  30,
       17, 1,  115, 30,    14, 21, 46,  28,    29, 19, 24,  30,    11, 46, 15,  30,
       13, 6,  115, 30,    14, 23, 46,  28,    44, 7,  24,  30,    59, 1,  16,  30,
       12, 7,  121, 30,    12, 26, 47,  28,    39, 14, 24,  30,    22, 41, 15,  30,
       6,  14, 121, 30,    6,  34, 47,  28,    46, 10, 24,  30,    2,  64, 15,  30,
       17, 4,  122, 30,    29, 14, 46,  28,    49, 10, 24,  30,    24, 46, 15,  30,
       4,  18, 122, 30,    13, 32, 46,  28,    48, 14, 24,  30,    42, 32, 15,  30,
       20, 4,  117, 30,    40, 7,  47,  28,    43, 22, 24,  30,    10, 67, 15,  30,
       19, 6,  118, 30,    18, 31, 47,  28,    34, 34, 24,  30,    20, 61, 15,  30
     ],
 
     /**
      * The final format bits with mask (level << 3 | mask).
      *
      * @public
      * @static
      * @type {number[]}
      * @memberof ErrorCorrection
      */
     FINAL_FORMAT: [
       // L
       0x77c4, 0x72f3, 0x7daa, 0x789d, 0x662f, 0x6318, 0x6c41, 0x6976,
       // M
       0x5412, 0x5125, 0x5e7c, 0x5b4b, 0x45f9, 0x40ce, 0x4f97, 0x4aa0,
       // Q
       0x355f, 0x3068, 0x3f31, 0x3a06, 0x24b4, 0x2183, 0x2eda, 0x2bed,
       // H
       0x1689, 0x13be, 0x1ce7, 0x19d0, 0x0762, 0x0255, 0x0d0c, 0x083b
     ],
 
     /**
      * A map of human-readable ECC levels.
      *
      * @public
      * @static
      * @type {Object.<string, number>}
      * @memberof ErrorCorrection
      */
     LEVELS: {
       L: 1,
       M: 2,
       Q: 3,
       H: 4
     }
 
   });
 
   var ErrorCorrection_1 = ErrorCorrection;
 
   /**
    * Contains Galois field information.
    *
    * @public
    * @class
    * @extends Nevis
    */
   var Galois = lite.extend(null, {
 
     /**
      * The Galois field exponent table.
      *
      * @public
      * @static
      * @type {number[]}
      * @memberof Galois
      */
     EXPONENT: [
       0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1d, 0x3a, 0x74, 0xe8, 0xcd, 0x87, 0x13, 0x26,
       0x4c, 0x98, 0x2d, 0x5a, 0xb4, 0x75, 0xea, 0xc9, 0x8f, 0x03, 0x06, 0x0c, 0x18, 0x30, 0x60, 0xc0,
       0x9d, 0x27, 0x4e, 0x9c, 0x25, 0x4a, 0x94, 0x35, 0x6a, 0xd4, 0xb5, 0x77, 0xee, 0xc1, 0x9f, 0x23,
       0x46, 0x8c, 0x05, 0x0a, 0x14, 0x28, 0x50, 0xa0, 0x5d, 0xba, 0x69, 0xd2, 0xb9, 0x6f, 0xde, 0xa1,
       0x5f, 0xbe, 0x61, 0xc2, 0x99, 0x2f, 0x5e, 0xbc, 0x65, 0xca, 0x89, 0x0f, 0x1e, 0x3c, 0x78, 0xf0,
       0xfd, 0xe7, 0xd3, 0xbb, 0x6b, 0xd6, 0xb1, 0x7f, 0xfe, 0xe1, 0xdf, 0xa3, 0x5b, 0xb6, 0x71, 0xe2,
       0xd9, 0xaf, 0x43, 0x86, 0x11, 0x22, 0x44, 0x88, 0x0d, 0x1a, 0x34, 0x68, 0xd0, 0xbd, 0x67, 0xce,
       0x81, 0x1f, 0x3e, 0x7c, 0xf8, 0xed, 0xc7, 0x93, 0x3b, 0x76, 0xec, 0xc5, 0x97, 0x33, 0x66, 0xcc,
       0x85, 0x17, 0x2e, 0x5c, 0xb8, 0x6d, 0xda, 0xa9, 0x4f, 0x9e, 0x21, 0x42, 0x84, 0x15, 0x2a, 0x54,
       0xa8, 0x4d, 0x9a, 0x29, 0x52, 0xa4, 0x55, 0xaa, 0x49, 0x92, 0x39, 0x72, 0xe4, 0xd5, 0xb7, 0x73,
       0xe6, 0xd1, 0xbf, 0x63, 0xc6, 0x91, 0x3f, 0x7e, 0xfc, 0xe5, 0xd7, 0xb3, 0x7b, 0xf6, 0xf1, 0xff,
       0xe3, 0xdb, 0xab, 0x4b, 0x96, 0x31, 0x62, 0xc4, 0x95, 0x37, 0x6e, 0xdc, 0xa5, 0x57, 0xae, 0x41,
       0x82, 0x19, 0x32, 0x64, 0xc8, 0x8d, 0x07, 0x0e, 0x1c, 0x38, 0x70, 0xe0, 0xdd, 0xa7, 0x53, 0xa6,
       0x51, 0xa2, 0x59, 0xb2, 0x79, 0xf2, 0xf9, 0xef, 0xc3, 0x9b, 0x2b, 0x56, 0xac, 0x45, 0x8a, 0x09,
       0x12, 0x24, 0x48, 0x90, 0x3d, 0x7a, 0xf4, 0xf5, 0xf7, 0xf3, 0xfb, 0xeb, 0xcb, 0x8b, 0x0b, 0x16,
       0x2c, 0x58, 0xb0, 0x7d, 0xfa, 0xe9, 0xcf, 0x83, 0x1b, 0x36, 0x6c, 0xd8, 0xad, 0x47, 0x8e, 0x00
     ],
 
     /**
      * The Galois field log table.
      *
      * @public
      * @static
      * @type {number[]}
      * @memberof Galois
      */
     LOG: [
       0xff, 0x00, 0x01, 0x19, 0x02, 0x32, 0x1a, 0xc6, 0x03, 0xdf, 0x33, 0xee, 0x1b, 0x68, 0xc7, 0x4b,
       0x04, 0x64, 0xe0, 0x0e, 0x34, 0x8d, 0xef, 0x81, 0x1c, 0xc1, 0x69, 0xf8, 0xc8, 0x08, 0x4c, 0x71,
       0x05, 0x8a, 0x65, 0x2f, 0xe1, 0x24, 0x0f, 0x21, 0x35, 0x93, 0x8e, 0xda, 0xf0, 0x12, 0x82, 0x45,
       0x1d, 0xb5, 0xc2, 0x7d, 0x6a, 0x27, 0xf9, 0xb9, 0xc9, 0x9a, 0x09, 0x78, 0x4d, 0xe4, 0x72, 0xa6,
       0x06, 0xbf, 0x8b, 0x62, 0x66, 0xdd, 0x30, 0xfd, 0xe2, 0x98, 0x25, 0xb3, 0x10, 0x91, 0x22, 0x88,
       0x36, 0xd0, 0x94, 0xce, 0x8f, 0x96, 0xdb, 0xbd, 0xf1, 0xd2, 0x13, 0x5c, 0x83, 0x38, 0x46, 0x40,
       0x1e, 0x42, 0xb6, 0xa3, 0xc3, 0x48, 0x7e, 0x6e, 0x6b, 0x3a, 0x28, 0x54, 0xfa, 0x85, 0xba, 0x3d,
       0xca, 0x5e, 0x9b, 0x9f, 0x0a, 0x15, 0x79, 0x2b, 0x4e, 0xd4, 0xe5, 0xac, 0x73, 0xf3, 0xa7, 0x57,
       0x07, 0x70, 0xc0, 0xf7, 0x8c, 0x80, 0x63, 0x0d, 0x67, 0x4a, 0xde, 0xed, 0x31, 0xc5, 0xfe, 0x18,
       0xe3, 0xa5, 0x99, 0x77, 0x26, 0xb8, 0xb4, 0x7c, 0x11, 0x44, 0x92, 0xd9, 0x23, 0x20, 0x89, 0x2e,
       0x37, 0x3f, 0xd1, 0x5b, 0x95, 0xbc, 0xcf, 0xcd, 0x90, 0x87, 0x97, 0xb2, 0xdc, 0xfc, 0xbe, 0x61,
       0xf2, 0x56, 0xd3, 0xab, 0x14, 0x2a, 0x5d, 0x9e, 0x84, 0x3c, 0x39, 0x53, 0x47, 0x6d, 0x41, 0xa2,
       0x1f, 0x2d, 0x43, 0xd8, 0xb7, 0x7b, 0xa4, 0x76, 0xc4, 0x17, 0x49, 0xec, 0x7f, 0x0c, 0x6f, 0xf6,
       0x6c, 0xa1, 0x3b, 0x52, 0x29, 0x9d, 0x55, 0xaa, 0xfb, 0x60, 0x86, 0xb1, 0xbb, 0xcc, 0x3e, 0x5a,
       0xcb, 0x59, 0x5f, 0xb0, 0x9c, 0xa9, 0xa0, 0x51, 0x0b, 0xf5, 0x16, 0xeb, 0x7a, 0x75, 0x2c, 0xd7,
       0x4f, 0xae, 0xd5, 0xe9, 0xe6, 0xe7, 0xad, 0xe8, 0x74, 0xd6, 0xf4, 0xea, 0xa8, 0x50, 0x58, 0xaf
     ]
 
   });
 
   var Galois_1 = Galois;
 
   /**
    * Contains version pattern information.
    *
    * @public
    * @class
    * @extends Nevis
    */
   var Version = lite.extend(null, {
 
     /**
      * The version pattern block.
      *
      * @public
      * @static
      * @type {number[]}
      * @memberof Version
      */
     BLOCK: [
       0xc94, 0x5bc, 0xa99, 0x4d3, 0xbf6, 0x762, 0x847, 0x60d, 0x928, 0xb78, 0x45d, 0xa17, 0x532,
       0x9a6, 0x683, 0x8c9, 0x7ec, 0xec4, 0x1e1, 0xfab, 0x08e, 0xc1a, 0x33f, 0xd75, 0x250, 0x9d5,
       0x6f0, 0x8ba, 0x79f, 0xb0b, 0x42e, 0xa64, 0x541, 0xc69
     ]
 
   });
 
   var Version_1 = Version;
 
   /**
    * Generates information for a QR code frame based on a specific value to be encoded.
    *
    * @param {Frame~Options} options - the options to be used
    * @public
    * @class
    * @extends Nevis
    */
   var Frame = lite.extend(function(options) {
     var dataBlock, eccBlock, index, neccBlock1, neccBlock2;
     var valueLength = options.value.length;
 
     this._badness = [];
     this._level = ErrorCorrection_1.LEVELS[options.level];
     this._polynomial = [];
     this._value = options.value;
     this._version = 0;
     this._stringBuffer = [];
 
     while (this._version < 40) {
       this._version++;
 
       index = ((this._level - 1) * 4) + ((this._version - 1) * 16);
 
       neccBlock1 = ErrorCorrection_1.BLOCKS[index++];
       neccBlock2 = ErrorCorrection_1.BLOCKS[index++];
       dataBlock = ErrorCorrection_1.BLOCKS[index++];
       eccBlock = ErrorCorrection_1.BLOCKS[index];
 
       index = (dataBlock * (neccBlock1 + neccBlock2)) + neccBlock2 - 3 + (this._version <= 9);
 
       if (valueLength <= index) {
         break;
       }
     }
 
     this._dataBlock = dataBlock;
     this._eccBlock = eccBlock;
     this._neccBlock1 = neccBlock1;
     this._neccBlock2 = neccBlock2;
 
     /**
      * The data width is based on version.
      *
      * @public
      * @type {number}
      * @memberof Frame#
      */
     // FIXME: Ensure that it fits instead of being truncated.
     var width = this.width = 17 + (4 * this._version);
 
     /**
      * The image buffer.
      *
      * @public
      * @type {number[]}
      * @memberof Frame#
      */
     this.buffer = Frame._createArray(width * width);
 
     this._ecc = Frame._createArray(dataBlock + ((dataBlock + eccBlock) * (neccBlock1 + neccBlock2)) + neccBlock2);
     this._mask = Frame._createArray(((width * (width + 1)) + 1) / 2);
 
     this._insertFinders();
     this._insertAlignments();
 
     // Insert single foreground cell.
     this.buffer[8 + (width * (width - 8))] = 1;
 
     this._insertTimingGap();
     this._reverseMask();
     this._insertTimingRowAndColumn();
     this._insertVersion();
     this._syncMask();
     this._convertBitStream(valueLength);
     this._calculatePolynomial();
     this._appendEccToData();
     this._interleaveBlocks();
     this._pack();
     this._finish();
   }, {
 
     _addAlignment: function(x, y) {
       var i;
       var buffer = this.buffer;
       var width = this.width;
 
       buffer[x + (width * y)] = 1;
 
       for (i = -2; i < 2; i++) {
         buffer[x + i + (width * (y - 2))] = 1;
         buffer[x - 2 + (width * (y + i + 1))] = 1;
         buffer[x + 2 + (width * (y + i))] = 1;
         buffer[x + i + 1 + (width * (y + 2))] = 1;
       }
 
       for (i = 0; i < 2; i++) {
         this._setMask(x - 1, y + i);
         this._setMask(x + 1, y - i);
         this._setMask(x - i, y - 1);
         this._setMask(x + i, y + 1);
       }
     },
 
     _appendData: function(data, dataLength, ecc, eccLength) {
       var bit, i, j;
       var polynomial = this._polynomial;
       var stringBuffer = this._stringBuffer;
 
       for (i = 0; i < eccLength; i++) {
         stringBuffer[ecc + i] = 0;
       }
 
       for (i = 0; i < dataLength; i++) {
         bit = Galois_1.LOG[stringBuffer[data + i] ^ stringBuffer[ecc]];
 
         if (bit !== 255) {
           for (j = 1; j < eccLength; j++) {
             stringBuffer[ecc + j - 1] = stringBuffer[ecc + j] ^
               Galois_1.EXPONENT[Frame._modN(bit + polynomial[eccLength - j])];
           }
         } else {
           for (j = ecc; j < ecc + eccLength; j++) {
             stringBuffer[j] = stringBuffer[j + 1];
           }
         }
 
         stringBuffer[ecc + eccLength - 1] = bit === 255 ? 0 : Galois_1.EXPONENT[Frame._modN(bit + polynomial[0])];
       }
     },
 
     _appendEccToData: function() {
       var i;
       var data = 0;
       var dataBlock = this._dataBlock;
       var ecc = this._calculateMaxLength();
       var eccBlock = this._eccBlock;
 
       for (i = 0; i < this._neccBlock1; i++) {
         this._appendData(data, dataBlock, ecc, eccBlock);
 
         data += dataBlock;
         ecc += eccBlock;
       }
 
       for (i = 0; i < this._neccBlock2; i++) {
         this._appendData(data, dataBlock + 1, ecc, eccBlock);
 
         data += dataBlock + 1;
         ecc += eccBlock;
       }
     },
 
     _applyMask: function(mask) {
       var r3x, r3y, x, y;
       var buffer = this.buffer;
       var width = this.width;
 
       switch (mask) {
       case 0:
         for (y = 0; y < width; y++) {
           for (x = 0; x < width; x++) {
             if (!((x + y) & 1) && !this._isMasked(x, y)) {
               buffer[x + (y * width)] ^= 1;
             }
           }
         }
 
         break;
       case 1:
         for (y = 0; y < width; y++) {
           for (x = 0; x < width; x++) {
             if (!(y & 1) && !this._isMasked(x, y)) {
               buffer[x + (y * width)] ^= 1;
             }
           }
         }
 
         break;
       case 2:
         for (y = 0; y < width; y++) {
           for (r3x = 0, x = 0; x < width; x++, r3x++) {
             if (r3x === 3) {
               r3x = 0;
             }
 
             if (!r3x && !this._isMasked(x, y)) {
               buffer[x + (y * width)] ^= 1;
             }
           }
         }
 
         break;
       case 3:
         for (r3y = 0, y = 0; y < width; y++, r3y++) {
           if (r3y === 3) {
             r3y = 0;
           }
 
           for (r3x = r3y, x = 0; x < width; x++, r3x++) {
             if (r3x === 3) {
               r3x = 0;
             }
 
             if (!r3x && !this._isMasked(x, y)) {
               buffer[x + (y * width)] ^= 1;
             }
           }
         }
 
         break;
       case 4:
         for (y = 0; y < width; y++) {
           for (r3x = 0, r3y = (y >> 1) & 1, x = 0; x < width; x++, r3x++) {
             if (r3x === 3) {
               r3x = 0;
               r3y = !r3y;
             }
 
             if (!r3y && !this._isMasked(x, y)) {
               buffer[x + (y * width)] ^= 1;
             }
           }
         }
 
         break;
       case 5:
         for (r3y = 0, y = 0; y < width; y++, r3y++) {
           if (r3y === 3) {
             r3y = 0;
           }
 
           for (r3x = 0, x = 0; x < width; x++, r3x++) {
             if (r3x === 3) {
               r3x = 0;
             }
 
             if (!((x & y & 1) + !(!r3x | !r3y)) && !this._isMasked(x, y)) {
               buffer[x + (y * width)] ^= 1;
             }
           }
         }
 
         break;
       case 6:
         for (r3y = 0, y = 0; y < width; y++, r3y++) {
           if (r3y === 3) {
             r3y = 0;
           }
 
           for (r3x = 0, x = 0; x < width; x++, r3x++) {
             if (r3x === 3) {
               r3x = 0;
             }
 
             if (!((x & y & 1) + (r3x && r3x === r3y) & 1) && !this._isMasked(x, y)) {
               buffer[x + (y * width)] ^= 1;
             }
           }
         }
 
         break;
       case 7:
         for (r3y = 0, y = 0; y < width; y++, r3y++) {
           if (r3y === 3) {
             r3y = 0;
           }
 
           for (r3x = 0, x = 0; x < width; x++, r3x++) {
             if (r3x === 3) {
               r3x = 0;
             }
 
             if (!((r3x && r3x === r3y) + (x + y & 1) & 1) && !this._isMasked(x, y)) {
               buffer[x + (y * width)] ^= 1;
             }
           }
         }
 
         break;
       }
     },
 
     _calculateMaxLength: function() {
       return (this._dataBlock * (this._neccBlock1 + this._neccBlock2)) + this._neccBlock2;
     },
 
     _calculatePolynomial: function() {
       var i, j;
       var eccBlock = this._eccBlock;
       var polynomial = this._polynomial;
 
       polynomial[0] = 1;
 
       for (i = 0; i < eccBlock; i++) {
         polynomial[i + 1] = 1;
 
         for (j = i; j > 0; j--) {
           polynomial[j] = polynomial[j] ? polynomial[j - 1] ^
             Galois_1.EXPONENT[Frame._modN(Galois_1.LOG[polynomial[j]] + i)] : polynomial[j - 1];
         }
 
         polynomial[0] = Galois_1.EXPONENT[Frame._modN(Galois_1.LOG[polynomial[0]] + i)];
       }
 
       // Use logs for generator polynomial to save calculation step.
       for (i = 0; i <= eccBlock; i++) {
         polynomial[i] = Galois_1.LOG[polynomial[i]];
       }
     },
 
     _checkBadness: function() {
       var b, b1, h, x, y;
       var bad = 0;
       var badness = this._badness;
       var buffer = this.buffer;
       var width = this.width;
 
       // Blocks of same colour.
       for (y = 0; y < width - 1; y++) {
         for (x = 0; x < width - 1; x++) {
           // All foreground colour.
           if ((buffer[x + (width * y)] &&
             buffer[x + 1 + (width * y)] &&
             buffer[x + (width * (y + 1))] &&
             buffer[x + 1 + (width * (y + 1))]) ||
             // All background colour.
             !(buffer[x + (width * y)] ||
             buffer[x + 1 + (width * y)] ||
             buffer[x + (width * (y + 1))] ||
             buffer[x + 1 + (width * (y + 1))])) {
             bad += Frame.N2;
           }
         }
       }
 
       var bw = 0;
 
       // X runs.
       for (y = 0; y < width; y++) {
         h = 0;
 
         badness[0] = 0;
 
         for (b = 0, x = 0; x < width; x++) {
           b1 = buffer[x + (width * y)];
 
           if (b === b1) {
             badness[h]++;
           } else {
             badness[++h] = 1;
           }
 
           b = b1;
           bw += b ? 1 : -1;
         }
 
         bad += this._getBadness(h);
       }
 
       if (bw < 0) {
         bw = -bw;
       }
 
       var count = 0;
       var big = bw;
       big += big << 2;
       big <<= 1;
 
       while (big > width * width) {
         big -= width * width;
         count++;
       }
 
       bad += count * Frame.N4;
 
       // Y runs.
       for (x = 0; x < width; x++) {
         h = 0;
 
         badness[0] = 0;
 
         for (b = 0, y = 0; y < width; y++) {
           b1 = buffer[x + (width * y)];
 
           if (b === b1) {
             badness[h]++;
           } else {
             badness[++h] = 1;
           }
 
           b = b1;
         }
 
         bad += this._getBadness(h);
       }
 
       return bad;
     },
 
     _convertBitStream: function(length) {
       var bit, i;
       var ecc = this._ecc;
       var version = this._version;
 
       // Convert string to bit stream. 8-bit data to QR-coded 8-bit data (numeric, alphanumeric, or kanji not supported).
       for (i = 0; i < length; i++) {
         ecc[i] = this._value.charCodeAt(i);
       }
 
       var stringBuffer = this._stringBuffer = ecc.slice();
       var maxLength = this._calculateMaxLength();
 
       if (length >= maxLength - 2) {
         length = maxLength - 2;
 
         if (version > 9) {
           length--;
         }
       }
 
       // Shift and re-pack to insert length prefix.
       var index = length;
 
       if (version > 9) {
         stringBuffer[index + 2] = 0;
         stringBuffer[index + 3] = 0;
 
         while (index--) {
           bit = stringBuffer[index];
 
           stringBuffer[index + 3] |= 255 & (bit << 4);
           stringBuffer[index + 2] = bit >> 4;
         }
 
         stringBuffer[2] |= 255 & (length << 4);
         stringBuffer[1] = length >> 4;
         stringBuffer[0] = 0x40 | (length >> 12);
       } else {
         stringBuffer[index + 1] = 0;
         stringBuffer[index + 2] = 0;
 
         while (index--) {
           bit = stringBuffer[index];
 
           stringBuffer[index + 2] |= 255 & (bit << 4);
           stringBuffer[index + 1] = bit >> 4;
         }
 
         stringBuffer[1] |= 255 & (length << 4);
         stringBuffer[0] = 0x40 | (length >> 4);
       }
 
       // Fill to end with pad pattern.
       index = length + 3 - (version < 10);
 
       while (index < maxLength) {
         stringBuffer[index++] = 0xec;
         stringBuffer[index++] = 0x11;
       }
     },
 
     _getBadness: function(length) {
       var i;
       var badRuns = 0;
       var badness = this._badness;
 
       for (i = 0; i <= length; i++) {
         if (badness[i] >= 5) {
           badRuns += Frame.N1 + badness[i] - 5;
         }
       }
 
       // FBFFFBF as in finder.
       for (i = 3; i < length - 1; i += 2) {
         if (badness[i - 2] === badness[i + 2] &&
           badness[i + 2] === badness[i - 1] &&
           badness[i - 1] === badness[i + 1] &&
           badness[i - 1] * 3 === badness[i] &&
           // Background around the foreground pattern? Not part of the specs.
           (badness[i - 3] === 0 || i + 3 > length ||
           badness[i - 3] * 3 >= badness[i] * 4 ||
           badness[i + 3] * 3 >= badness[i] * 4)) {
           badRuns += Frame.N3;
         }
       }
 
       return badRuns;
     },
 
     _finish: function() {
       // Save pre-mask copy of frame.
       this._stringBuffer = this.buffer.slice();
 
       var currentMask, i;
       var bit = 0;
       var mask = 30000;
 
       /*
        * Using for instead of while since in original Arduino code if an early mask was "good enough" it wouldn't try for
        * a better one since they get more complex and take longer.
        */
       for (i = 0; i < 8; i++) {
         // Returns foreground-background imbalance.
         this._applyMask(i);
 
         currentMask = this._checkBadness();
 
         // Is current mask better than previous best?
         if (currentMask < mask) {
           mask = currentMask;
           bit = i;
         }
 
         // Don't increment "i" to a void redoing mask.
         if (bit === 7) {
           break;
         }
 
         // Reset for next pass.
         this.buffer = this._stringBuffer.slice();
       }
 
       // Redo best mask as none were "good enough" (i.e. last wasn't bit).
       if (bit !== i) {
         this._applyMask(bit);
       }
 
       // Add in final mask/ECC level bytes.
       mask = ErrorCorrection_1.FINAL_FORMAT[bit + (this._level - 1 << 3)];
 
       var buffer = this.buffer;
       var width = this.width;
 
       // Low byte.
       for (i = 0; i < 8; i++, mask >>= 1) {
         if (mask & 1) {
           buffer[width - 1 - i + (width * 8)] = 1;
 
           if (i < 6) {
             buffer[8 + (width * i)] = 1;
           } else {
             buffer[8 + (width * (i + 1))] = 1;
           }
         }
       }
 
       // High byte.
       for (i = 0; i < 7; i++, mask >>= 1) {
         if (mask & 1) {
           buffer[8 + (width * (width - 7 + i))] = 1;
 
           if (i) {
             buffer[6 - i + (width * 8)] = 1;
           } else {
             buffer[7 + (width * 8)] = 1;
           }
         }
       }
     },
 
     _interleaveBlocks: function() {
       var i, j;
       var dataBlock = this._dataBlock;
       var ecc = this._ecc;
       var eccBlock = this._eccBlock;
       var k = 0;
       var maxLength = this._calculateMaxLength();
       var neccBlock1 = this._neccBlock1;
       var neccBlock2 = this._neccBlock2;
       var stringBuffer = this._stringBuffer;
 
       for (i = 0; i < dataBlock; i++) {
         for (j = 0; j < neccBlock1; j++) {
           ecc[k++] = stringBuffer[i + (j * dataBlock)];
         }
 
         for (j = 0; j < neccBlock2; j++) {
           ecc[k++] = stringBuffer[(neccBlock1 * dataBlock) + i + (j * (dataBlock + 1))];
         }
       }
 
       for (j = 0; j < neccBlock2; j++) {
         ecc[k++] = stringBuffer[(neccBlock1 * dataBlock) + i + (j * (dataBlock + 1))];
       }
 
       for (i = 0; i < eccBlock; i++) {
         for (j = 0; j < neccBlock1 + neccBlock2; j++) {
           ecc[k++] = stringBuffer[maxLength + i + (j * eccBlock)];
         }
       }
 
       this._stringBuffer = ecc;
     },
 
     _insertAlignments: function() {
       var i, x, y;
       var version = this._version;
       var width = this.width;
 
       if (version > 1) {
         i = Alignment_1.BLOCK[version];
         y = width - 7;
 
         for (;;) {
           x = width - 7;
 
           while (x > i - 3) {
             this._addAlignment(x, y);
 
             if (x < i) {
               break;
             }
 
             x -= i;
           }
 
           if (y <= i + 9) {
             break;
           }
 
           y -= i;
 
           this._addAlignment(6, y);
           this._addAlignment(y, 6);
         }
       }
     },
 
     _insertFinders: function() {
       var i, j, x, y;
       var buffer = this.buffer;
       var width = this.width;
 
       for (i = 0; i < 3; i++) {
         j = 0;
         y = 0;
 
         if (i === 1) {
           j = width - 7;
         }
         if (i === 2) {
           y = width - 7;
         }
 
         buffer[y + 3 + (width * (j + 3))] = 1;
 
         for (x = 0; x < 6; x++) {
           buffer[y + x + (width * j)] = 1;
           buffer[y + (width * (j + x + 1))] = 1;
           buffer[y + 6 + (width * (j + x))] = 1;
           buffer[y + x + 1 + (width * (j + 6))] = 1;
         }
 
         for (x = 1; x < 5; x++) {
           this._setMask(y + x, j + 1);
           this._setMask(y + 1, j + x + 1);
           this._setMask(y + 5, j + x);
           this._setMask(y + x + 1, j + 5);
         }
 
         for (x = 2; x < 4; x++) {
           buffer[y + x + (width * (j + 2))] = 1;
           buffer[y + 2 + (width * (j + x + 1))] = 1;
           buffer[y + 4 + (width * (j + x))] = 1;
           buffer[y + x + 1 + (width * (j + 4))] = 1;
         }
       }
     },
 
     _insertTimingGap: function() {
       var x, y;
       var width = this.width;
 
       for (y = 0; y < 7; y++) {
         this._setMask(7, y);
         this._setMask(width - 8, y);
         this._setMask(7, y + width - 7);
       }
 
       for (x = 0; x < 8; x++) {
         this._setMask(x, 7);
         this._setMask(x + width - 8, 7);
         this._setMask(x, width - 8);
       }
     },
 
     _insertTimingRowAndColumn: function() {
       var x;
       var buffer = this.buffer;
       var width = this.width;
 
       for (x = 0; x < width - 14; x++) {
         if (x & 1) {
           this._setMask(8 + x, 6);
           this._setMask(6, 8 + x);
         } else {
           buffer[8 + x + (width * 6)] = 1;
           buffer[6 + (width * (8 + x))] = 1;
         }
       }
     },
 
     _insertVersion: function() {
       var i, j, x, y;
       var buffer = this.buffer;
       var version = this._version;
       var width = this.width;
 
       if (version > 6) {
         i = Version_1.BLOCK[version - 7];
         j = 17;
 
         for (x = 0; x < 6; x++) {
           for (y = 0; y < 3; y++, j--) {
             if (1 & (j > 11 ? version >> j - 12 : i >> j)) {
               buffer[5 - x + (width * (2 - y + width - 11))] = 1;
               buffer[2 - y + width - 11 + (width * (5 - x))] = 1;
             } else {
               this._setMask(5 - x, 2 - y + width - 11);
               this._setMask(2 - y + width - 11, 5 - x);
             }
           }
         }
       }
     },
 
     _isMasked: function(x, y) {
       var bit = Frame._getMaskBit(x, y);
 
       return this._mask[bit] === 1;
     },
 
     _pack: function() {
       var bit, i, j;
       var k = 1;
       var v = 1;
       var width = this.width;
       var x = width - 1;
       var y = width - 1;
 
       // Interleaved data and ECC codes.
       var length = ((this._dataBlock + this._eccBlock) * (this._neccBlock1 + this._neccBlock2)) + this._neccBlock2;
 
       for (i = 0; i < length; i++) {
         bit = this._stringBuffer[i];
 
         for (j = 0; j < 8; j++, bit <<= 1) {
           if (0x80 & bit) {
             this.buffer[x + (width * y)] = 1;
           }
 
           // Find next fill position.
           do {
             if (v) {
               x--;
             } else {
               x++;
 
               if (k) {
                 if (y !== 0) {
                   y--;
                 } else {
                   x -= 2;
                   k = !k;
 
                   if (x === 6) {
                     x--;
                     y = 9;
                   }
                 }
               } else if (y !== width - 1) {
                 y++;
               } else {
                 x -= 2;
                 k = !k;
 
                 if (x === 6) {
                   x--;
                   y -= 8;
                 }
               }
             }
 
             v = !v;
           } while (this._isMasked(x, y));
         }
       }
     },
 
     _reverseMask: function() {
       var x, y;
       var width = this.width;
 
       for (x = 0; x < 9; x++) {
         this._setMask(x, 8);
       }
 
       for (x = 0; x < 8; x++) {
         this._setMask(x + width - 8, 8);
         this._setMask(8, x);
       }
 
       for (y = 0; y < 7; y++) {
         this._setMask(8, y + width - 7);
       }
     },
 
     _setMask: function(x, y) {
       var bit = Frame._getMaskBit(x, y);
 
       this._mask[bit] = 1;
     },
 
     _syncMask: function() {
       var x, y;
       var width = this.width;
 
       for (y = 0; y < width; y++) {
         for (x = 0; x <= y; x++) {
           if (this.buffer[x + (width * y)]) {
             this._setMask(x, y);
           }
         }
       }
     }
 
   }, {
 
     _createArray: function(length) {
       var i;
       var array = [];
 
       for (i = 0; i < length; i++) {
         array[i] = 0;
       }
 
       return array;
     },
 
     _getMaskBit: function(x, y) {
       var bit;
 
       if (x > y) {
         bit = x;
         x = y;
         y = bit;
       }
 
       bit = y;
       bit += y * y;
       bit >>= 1;
       bit += x;
 
       return bit;
     },
 
     _modN: function(x) {
       while (x >= 255) {
         x -= 255;
         x = (x >> 8) + (x & 255);
       }
 
       return x;
     },
 
     // *Badness* coefficients.
     N1: 3,
     N2: 3,
     N3: 40,
     N4: 10
 
   });
 
   var Frame_1 = Frame;
 
   /**
    * The options used by {@link Frame}.
    *
    * @typedef {Object} Frame~Options
    * @property {string} level - The ECC level to be used.
    * @property {string} value - The value to be encoded.
    */
 
   /**
    * An implementation of {@link Renderer} for working with <code>img</code> elements.
    *
    * This depends on {@link CanvasRenderer} being executed first as this implementation simply applies the data URL from
    * the rendered <code>canvas</code> element as the <code>src</code> for the <code>img</code> element being rendered.
    *
    * @public
    * @class
    * @extends Renderer
    */
   var ImageRenderer = Renderer_1.extend({
 
     /**
      * @override
      */
     draw: function() {
       this.element.src = this.qrious.toDataURL();
     },
 
     /**
      * @override
      */
     reset: function() {
       this.element.src = '';
     },
 
     /**
      * @override
      */
     resize: function() {
       var element = this.element;
 
       element.width = element.height = this.qrious.size;
     }
 
   });
 
   var ImageRenderer_1 = ImageRenderer;
 
   /**
    * Defines an available option while also configuring how values are applied to the target object.
    *
    * Optionally, a default value can be specified as well a value transformer for greater control over how the option
    * value is applied.
    *
    * If no value transformer is specified, then any specified option will be applied directly. All values are maintained
    * on the target object itself as a field using the option name prefixed with a single underscore.
    *
    * When an option is specified as modifiable, the {@link OptionManager} will be required to include a setter for the
    * property that is defined on the target object that uses the option name.
    *
    * @param {string} name - the name to be used
    * @param {boolean} [modifiable] - <code>true</code> if the property defined on target objects should include a setter;
    * otherwise <code>false</code>
    * @param {*} [defaultValue] - the default value to be used
    * @param {Option~ValueTransformer} [valueTransformer] - the value transformer to be used
    * @public
    * @class
    * @extends Nevis
    */
   var Option = lite.extend(function(name, modifiable, defaultValue, valueTransformer) {
     /**
      * The name for this {@link Option}.
      *
      * @public
      * @type {string}
      * @memberof Option#
      */
     this.name = name;
 
     /**
      * Whether a setter should be included on the property defined on target objects for this {@link Option}.
      *
      * @public
      * @type {boolean}
      * @memberof Option#
      */
     this.modifiable = Boolean(modifiable);
 
     /**
      * The default value for this {@link Option}.
      *
      * @public
      * @type {*}
      * @memberof Option#
      */
     this.defaultValue = defaultValue;
 
     this._valueTransformer = valueTransformer;
   }, {
 
     /**
      * Transforms the specified <code>value</code> so that it can be applied for this {@link Option}.
      *
      * If a value transformer has been specified for this {@link Option}, it will be called upon to transform
      * <code>value</code>. Otherwise, <code>value</code> will be returned directly.
      *
      * @param {*} value - the value to be transformed
      * @return {*} The transformed value or <code>value</code> if no value transformer is specified.
      * @public
      * @memberof Option#
      */
     transform: function(value) {
       var transformer = this._valueTransformer;
       if (typeof transformer === 'function') {
         return transformer(value, this);
       }
 
       return value;
     }
 
   });
 
   var Option_1 = Option;
 
   /**
    * Returns a transformed value for the specified <code>value</code> to be applied for the <code>option</code> provided.
    *
    * @callback Option~ValueTransformer
    * @param {*} value - the value to be transformed
    * @param {Option} option - the {@link Option} for which <code>value</code> is being transformed
    * @return {*} The transform value.
    */
 
   /**
    * Contains utility methods that are useful throughout the library.
    *
    * @public
    * @class
    * @extends Nevis
    */
   var Utilities = lite.extend(null, {
 
     /**
      * Returns the absolute value of a given number.
      *
      * This method is simply a convenient shorthand for <code>Math.abs</code> while ensuring that nulls are returned as
      * <code>null</code> instead of zero.
      *
      * @param {number} value - the number whose absolute value is to be returned
      * @return {number} The absolute value of <code>value</code> or <code>null</code> if <code>value</code> is
      * <code>null</code>.
      * @public
      * @static
      * @memberof Utilities
      */
     abs: function(value) {
       return value != null ? Math.abs(value) : null;
     },
 
     /**
      * Returns whether the specified <code>object</code> has a property with the specified <code>name</code> as an own
      * (not inherited) property.
      *
      * @param {Object} object - the object on which the property is to be checked
      * @param {string} name - the name of the property to be checked
      * @return {boolean} <code>true</code> if <code>object</code> has an own property with <code>name</code>.
      * @public
      * @static
      * @memberof Utilities
      */
     hasOwn: function(object, name) {
       return Object.prototype.hasOwnProperty.call(object, name);
     },
 
     /**
      * A non-operation method that does absolutely nothing.
      *
      * @return {void}
      * @public
      * @static
      * @memberof Utilities
      */
     noop: function() {},
 
     /**
      * Transforms the specified <code>string</code> to upper case while remaining null-safe.
      *
      * @param {string} string - the string to be transformed to upper case
      * @return {string} <code>string</code> transformed to upper case if <code>string</code> is not <code>null</code>.
      * @public
      * @static
      * @memberof Utilities
      */
     toUpperCase: function(string) {
       return string != null ? string.toUpperCase() : null;
     }
 
   });
 
   var Utilities_1 = Utilities;
 
   /**
    * Manages multiple {@link Option} instances that are intended to be used by multiple implementations.
    *
    * Although the option definitions are shared between targets, the values are maintained on the targets themselves.
    *
    * @param {Option[]} options - the options to be used
    * @public
    * @class
    * @extends Nevis
    */
   var OptionManager = lite.extend(function(options) {
     /**
      * The available options for this {@link OptionManager}.
      *
      * @public
      * @type {Object.<string, Option>}
      * @memberof OptionManager#
      */
     this.options = {};
 
     options.forEach(function(option) {
       this.options[option.name] = option;
     }, this);
   }, {
 
     /**
      * Returns whether an option with the specified <code>name</code> is available.
      *
      * @param {string} name - the name of the {@link Option} whose existence is to be checked
      * @return {boolean} <code>true</code> if an {@link Option} exists with <code>name</code>; otherwise
      * <code>false</code>.
      * @public
      * @memberof OptionManager#
      */
     exists: function(name) {
       return this.options[name] != null;
     },
 
     /**
      * Returns the value of the option with the specified <code>name</code> on the <code>target</code> object provided.
      *
      * @param {string} name - the name of the {@link Option} whose value on <code>target</code> is to be returned
      * @param {Object} target - the object from which the value of the named {@link Option} is to be returned
      * @return {*} The value of the {@link Option} with <code>name</code> on <code>target</code>.
      * @public
      * @memberof OptionManager#
      */
     get: function(name, target) {
       return OptionManager._get(this.options[name], target);
     },
 
     /**
      * Returns a copy of all of the available options on the <code>target</code> object provided.
      *
      * @param {Object} target - the object from which the option name/value pairs are to be returned
      * @return {Object.<string, *>} A hash containing the name/value pairs of all options on <code>target</code>.
      * @public
      * @memberof OptionManager#
      */
     getAll: function(target) {
       var name;
       var options = this.options;
       var result = {};
 
       for (name in options) {
         if (Utilities_1.hasOwn(options, name)) {
           result[name] = OptionManager._get(options[name], target);
         }
       }
 
       return result;
     },
 
     /**
      * Initializes the available options for the <code>target</code> object provided and then applies the initial values
      * within the speciifed <code>options</code>.
      *
      * This method will throw an error if any of the names within <code>options</code> does not match an available option.
      *
      * This involves setting the default values and defining properties for all of the available options on
      * <code>target</code> before finally calling {@link OptionMananger#setAll} with <code>options</code> and
      * <code>target</code>. Any options that are configured to be modifiable will have a setter included in their defined
      * property that will allow its corresponding value to be modified.
      *
      * If a change handler is specified, it will be called whenever the value changes on <code>target</code> for a
      * modifiable option, but only when done so via the defined property's setter.
      *
      * @param {Object.<string, *>} options - the name/value pairs of the initial options to be set
      * @param {Object} target - the object on which the options are to be initialized
      * @param {Function} [changeHandler] - the function to be called whenever the value of an modifiable option changes on
      * <code>target</code>
      * @return {void}
      * @throws {Error} If <code>options</code> contains an invalid option name.
      * @public
      * @memberof OptionManager#
      */
     init: function(options, target, changeHandler) {
       if (typeof changeHandler !== 'function') {
         changeHandler = Utilities_1.noop;
       }
 
       var name, option;
 
       for (name in this.options) {
         if (Utilities_1.hasOwn(this.options, name)) {
           option = this.options[name];
 
           OptionManager._set(option, option.defaultValue, target);
           OptionManager._createAccessor(option, target, changeHandler);
         }
       }
 
       this._setAll(options, target, true);
     },
 
     /**
      * Sets the value of the option with the specified <code>name</code> on the <code>target</code> object provided to
      * <code>value</code>.
      *
      * This method will throw an error if <code>name</code> does not match an available option or matches an option that
      * cannot be modified.
      *
      * If <code>value</code> is <code>null</code> and the {@link Option} has a default value configured, then that default
      * value will be used instead. If the {@link Option} also has a value transformer configured, it will be used to
      * transform whichever value was determined to be used.
      *
      * This method returns whether the value of the underlying field on <code>target</code> was changed as a result.
      *
      * @param {string} name - the name of the {@link Option} whose value is to be set
      * @param {*} value - the value to be set for the named {@link Option} on <code>target</code>
      * @param {Object} target - the object on which <code>value</code> is to be set for the named {@link Option}
      * @return {boolean} <code>true</code> if the underlying field on <code>target</code> was changed; otherwise
      * <code>false</code>.
      * @throws {Error} If <code>name</code> is invalid or is for an option that cannot be modified.
      * @public
      * @memberof OptionManager#
      */
     set: function(name, value, target) {
       return this._set(name, value, target);
     },
 
     /**
      * Sets all of the specified <code>options</code> on the <code>target</code> object provided to their corresponding
      * values.
      *
      * This method will throw an error if any of the names within <code>options</code> does not match an available option
      * or matches an option that cannot be modified.
      *
      * If any value within <code>options</code> is <code>null</code> and the corresponding {@link Option} has a default
      * value configured, then that default value will be used instead. If an {@link Option} also has a value transformer
      * configured, it will be used to transform whichever value was determined to be used.
      *
      * This method returns whether the value for any of the underlying fields on <code>target</code> were changed as a
      * result.
      *
      * @param {Object.<string, *>} options - the name/value pairs of options to be set
      * @param {Object} target - the object on which the options are to be set
      * @return {boolean} <code>true</code> if any of the underlying fields on <code>target</code> were changed; otherwise
      * <code>false</code>.
      * @throws {Error} If <code>options</code> contains an invalid option name or an option that cannot be modiifed.
      * @public
      * @memberof OptionManager#
      */
     setAll: function(options, target) {
       return this._setAll(options, target);
     },
 
     _set: function(name, value, target, allowUnmodifiable) {
       var option = this.options[name];
       if (!option) {
         throw new Error('Invalid option: ' + name);
       }
       if (!option.modifiable && !allowUnmodifiable) {
         throw new Error('Option cannot be modified: ' + name);
       }
 
       return OptionManager._set(option, value, target);
     },
 
     _setAll: function(options, target, allowUnmodifiable) {
       if (!options) {
         return false;
       }
 
       var name;
       var changed = false;
 
       for (name in options) {
         if (Utilities_1.hasOwn(options, name) && this._set(name, options[name], target, allowUnmodifiable)) {
           changed = true;
         }
       }
 
       return changed;
     }
 
   }, {
 
     _createAccessor: function(option, target, changeHandler) {
       var descriptor = {
         get: function() {
           return OptionManager._get(option, target);
         }
       };
 
       if (option.modifiable) {
         descriptor.set = function(value) {
           if (OptionManager._set(option, value, target)) {
             changeHandler(value, option);
           }
         };
       }
 
       Object.defineProperty(target, option.name, descriptor);
     },
 
     _get: function(option, target) {
       return target['_' + option.name];
     },
 
     _set: function(option, value, target) {
       var fieldName = '_' + option.name;
       var oldValue = target[fieldName];
       var newValue = option.transform(value != null ? value : option.defaultValue);
 
       target[fieldName] = newValue;
 
       return newValue !== oldValue;
     }
 
   });
 
   var OptionManager_1 = OptionManager;
 
   /**
    * Called whenever the value of a modifiable {@link Option} is changed on a target object via the defined property's
    * setter.
    *
    * @callback OptionManager~ChangeHandler
    * @param {*} value - the new value for <code>option</code> on the target object
    * @param {Option} option - the modifable {@link Option} whose value has changed on the target object.
    * @return {void}
    */
 
   /**
    * A basic manager for {@link Service} implementations that are mapped to simple names.
    *
    * @public
    * @class
    * @extends Nevis
    */
   var ServiceManager = lite.extend(function() {
     this._services = {};
   }, {
 
     /**
      * Returns the {@link Service} being managed with the specified <code>name</code>.
      *
      * @param {string} name - the name of the {@link Service} to be returned
      * @return {Service} The {@link Service} is being managed with <code>name</code>.
      * @throws {Error} If no {@link Service} is being managed with <code>name</code>.
      * @public
      * @memberof ServiceManager#
      */
     getService: function(name) {
       var service = this._services[name];
       if (!service) {
         throw new Error('Service is not being managed with name: ' + name);
       }
 
       return service;
     },
 
     /**
      * Sets the {@link Service} implementation to be managed for the specified <code>name</code> to the
      * <code>service</code> provided.
      *
      * @param {string} name - the name of the {@link Service} to be managed with <code>name</code>
      * @param {Service} service - the {@link Service} implementation to be managed
      * @return {void}
      * @throws {Error} If a {@link Service} is already being managed with the same <code>name</code>.
      * @public
      * @memberof ServiceManager#
      */
     setService: function(name, service) {
       if (this._services[name]) {
         throw new Error('Service is already managed with name: ' + name);
       }
 
       if (service) {
         this._services[name] = service;
       }
     }
 
   });
 
   var ServiceManager_1 = ServiceManager;
 
   var optionManager = new OptionManager_1([
     new Option_1('background', true, 'white'),
     new Option_1('backgroundAlpha', true, 1, Utilities_1.abs),
     new Option_1('element'),
     new Option_1('foreground', true, 'black'),
     new Option_1('foregroundAlpha', true, 1, Utilities_1.abs),
     new Option_1('level', true, 'L', Utilities_1.toUpperCase),
     new Option_1('mime', true, 'image/png'),
     new Option_1('padding', true, null, Utilities_1.abs),
     new Option_1('size', true, 100, Utilities_1.abs),
     new Option_1('value', true, '')
   ]);
   var serviceManager = new ServiceManager_1();
 
   /**
    * Enables configuration of a QR code generator which uses HTML5 <code>canvas</code> for rendering.
    *
    * @param {QRious~Options} [options] - the options to be used
    * @throws {Error} If any <code>options</code> are invalid.
    * @public
    * @class
    * @extends Nevis
    */
   var QRious = lite.extend(function(options) {
     optionManager.init(options, this, this.update.bind(this));
 
     var element = optionManager.get('element', this);
     var elementService = serviceManager.getService('element');
     var canvas = element && elementService.isCanvas(element) ? element : elementService.createCanvas();
     var image = element && elementService.isImage(element) ? element : elementService.createImage();
 
     this._canvasRenderer = new CanvasRenderer_1(this, canvas, true);
     this._imageRenderer = new ImageRenderer_1(this, image, image === element);
 
     this.update();
   }, {
 
     /**
      * Returns all of the options configured for this {@link QRious}.
      *
      * Any changes made to the returned object will not be reflected in the options themselves or their corresponding
      * underlying fields.
      *
      * @return {Object.<string, *>} A copy of the applied options.
      * @public
      * @memberof QRious#
      */
     get: function() {
       return optionManager.getAll(this);
     },
 
     /**
      * Sets all of the specified <code>options</code> and automatically updates this {@link QRious} if any of the
      * underlying fields are changed as a result.
      *
      * This is the preferred method for updating multiple options at one time to avoid unnecessary updates between
      * changes.
      *
      * @param {QRious~Options} options - the options to be set
      * @return {void}
      * @throws {Error} If any <code>options</code> are invalid or cannot be modified.
      * @public
      * @memberof QRious#
      */
     set: function(options) {
       if (optionManager.setAll(options, this)) {
         this.update();
       }
     },
 
     /**
      * Returns the image data URI for the generated QR code using the <code>mime</code> provided.
      *
      * @param {string} [mime] - the MIME type for the image
      * @return {string} The image data URI for the QR code.
      * @public
      * @memberof QRious#
      */
     toDataURL: function(mime) {
       return this.canvas.toDataURL(mime || this.mime);
     },
 
     /**
      * Updates this {@link QRious} by generating a new {@link Frame} and re-rendering the QR code.
      *
      * @return {void}
      * @protected
      * @memberof QRious#
      */
     update: function() {
       var frame = new Frame_1({
         level: this.level,
         value: this.value
       });
 
       this._canvasRenderer.render(frame);
       this._imageRenderer.render(frame);
     }
 
   }, {
 
     /**
      * Configures the <code>service</code> provided to be used by all {@link QRious} instances.
      *
      * @param {Service} service - the {@link Service} to be configured
      * @return {void}
      * @throws {Error} If a {@link Service} has already been configured with the same name.
      * @public
      * @static
      * @memberof QRious
      */
     use: function(service) {
       serviceManager.setService(service.getName(), service);
     }
 
   });
 
   Object.defineProperties(QRious.prototype, {
 
     canvas: {
       /**
        * Returns the <code>canvas</code> element being used to render the QR code for this {@link QRious}.
        *
        * @return {*} The <code>canvas</code> element.
        * @public
        * @memberof QRious#
        * @alias canvas
        */
       get: function() {
         return this._canvasRenderer.getElement();
       }
     },
 
     image: {
       /**
        * Returns the <code>img</code> element being used to render the QR code for this {@link QRious}.
        *
        * @return {*} The <code>img</code> element.
        * @public
        * @memberof QRious#
        * @alias image
        */
       get: function() {
         return this._imageRenderer.getElement();
       }
     }
 
   });
 
   var QRious_1$2 = QRious;
 
   /**
    * The options used by {@link QRious}.
    *
    * @typedef {Object} QRious~Options
    * @property {string} [background="white"] - The background color to be applied to the QR code.
    * @property {number} [backgroundAlpha=1] - The background alpha to be applied to the QR code.
    * @property {*} [element] - The element to be used to render the QR code which may either be an <code>canvas</code> or
    * <code>img</code>. The element(s) will be created if needed.
    * @property {string} [foreground="black"] - The foreground color to be applied to the QR code.
    * @property {number} [foregroundAlpha=1] - The foreground alpha to be applied to the QR code.
    * @property {string} [level="L"] - The error correction level to be applied to the QR code.
    * @property {string} [mime="image/png"] - The MIME type to be used to render the image for the QR code.
    * @property {number} [padding] - The padding for the QR code in pixels.
    * @property {number} [size=100] - The size of the QR code in pixels.
    * @property {string} [value=""] - The value to be encoded within the QR code.
    */
 
   var index = QRious_1$2;
 
   /**
    * Defines a service contract that must be met by all implementations.
    *
    * @public
    * @class
    * @extends Nevis
    */
   var Service = lite.extend({
 
     /**
      * Returns the name of this {@link Service}.
      *
      * @return {string} The service name.
      * @public
      * @abstract
      * @memberof Service#
      */
     getName: function() {}
 
   });
 
   var Service_1 = Service;
 
   /**
    * A service for working with elements.
    *
    * @public
    * @class
    * @extends Service
    */
   var ElementService = Service_1.extend({
 
     /**
      * Creates an instance of a canvas element.
      *
      * Implementations of {@link ElementService} <b>must</b> override this method with their own specific logic.
      *
      * @return {*} The newly created canvas element.
      * @public
      * @abstract
      * @memberof ElementService#
      */
     createCanvas: function() {},
 
     /**
      * Creates an instance of a image element.
      *
      * Implementations of {@link ElementService} <b>must</b> override this method with their own specific logic.
      *
      * @return {*} The newly created image element.
      * @public
      * @abstract
      * @memberof ElementService#
      */
     createImage: function() {},
 
     /**
      * @override
      */
     getName: function() {
       return 'element';
     },
 
     /**
      * Returns whether the specified <code>element</code> is a canvas.
      *
      * Implementations of {@link ElementService} <b>must</b> override this method with their own specific logic.
      *
      * @param {*} element - the element to be checked
      * @return {boolean} <code>true</code> if <code>element</code> is a canvas; otherwise <code>false</code>.
      * @public
      * @abstract
      * @memberof ElementService#
      */
     isCanvas: function(element) {},
 
     /**
      * Returns whether the specified <code>element</code> is an image.
      *
      * Implementations of {@link ElementService} <b>must</b> override this method with their own specific logic.
      *
      * @param {*} element - the element to be checked
      * @return {boolean} <code>true</code> if <code>element</code> is an image; otherwise <code>false</code>.
      * @public
      * @abstract
      * @memberof ElementService#
      */
     isImage: function(element) {}
 
   });
 
   var ElementService_1 = ElementService;
 
   /**
    * An implementation of {@link ElementService} intended for use within a browser environment.
    *
    * @public
    * @class
    * @extends ElementService
    */
   var BrowserElementService = ElementService_1.extend({
 
     /**
      * @override
      */
     createCanvas: function() {
       return document.createElement('canvas');
     },
 
     /**
      * @override
      */
     createImage: function() {
       return document.createElement('img');
     },
 
     /**
      * @override
      */
     isCanvas: function(element) {
       return element instanceof HTMLCanvasElement;
     },
 
     /**
      * @override
      */
     isImage: function(element) {
       return element instanceof HTMLImageElement;
     }
 
   });
 
   var BrowserElementService_1 = BrowserElementService;
 
   index.use(new BrowserElementService_1());
 
   var QRious_1 = index;
 
   return QRious_1;
 
 })));
 
 //# sourceMappingURL=qrious.js.map