diff --git a/www/static/js/qrious.js b/www/static/js/qrious.js
new file mode 100644
index 0000000..a02f75c
--- /dev/null
+++ b/www/static/js/qrious.js
@@ -0,0 +1,2363 @@
+/*
+ * 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 .
+ */
+(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 Object.prototype.hasOwnProperty.
+ *
+ * @private
+ * @type {Function}
+ */
+ var hasOwnProperty = Object.prototype.hasOwnProperty;
+ /**
+ * A reference to Array.prototype.slice.
+ *
+ * @private
+ * @type {Function}
+ */
+ var slice = Array.prototype.slice;
+
+ /**
+ * Creates an object which inherits the given prototype.
+ *
+ * Optionally, the created object can be extended further with the specified properties.
+ *
+ * @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 prototype and/or
+ * statics provided.
+ *
+ * If name is provided, it will be used as the class name and can be accessed via a special
+ * class_ 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
+ * toString), but this is not applicable to the lite version of Nevis.
+ *
+ * If constructor 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 super_ 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 constructor 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 target object with the properties in each of the sources provided.
+ *
+ * if any source is null it will be ignored.
+ *
+ * @param {boolean} own - true to only copy own properties from sources onto
+ * target; otherwise false
+ * @param {Object} target - the target object which should be extended
+ * @param {...Object} [sources] - the source objects whose properties are to be copied onto target
+ * @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 prototype and/or
+ * statics provided.
+ *
+ * If name is provided, it will be used as the class name and can be accessed via a special
+ * class_ 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
+ * toString), but this is not applicable to the lite version of Nevis.
+ *
+ * If constructor 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 super_ 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 constructor 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] - true this {@link Renderer} is enabled; otherwise false.
+ * @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 frame on the underlying element.
+ *
+ * Implementations of {@link Renderer} must 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
+ * frame 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 frame
+ * 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 frame 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} must 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} must 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 canvas 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.}
+ * @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 img elements.
+ *
+ * This depends on {@link CanvasRenderer} being executed first as this implementation simply applies the data URL from
+ * the rendered canvas element as the src for the img 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] - true if the property defined on target objects should include a setter;
+ * otherwise false
+ * @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 value 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
+ * value. Otherwise, value will be returned directly.
+ *
+ * @param {*} value - the value to be transformed
+ * @return {*} The transformed value or value 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 value to be applied for the option provided.
+ *
+ * @callback Option~ValueTransformer
+ * @param {*} value - the value to be transformed
+ * @param {Option} option - the {@link Option} for which value 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 Math.abs while ensuring that nulls are returned as
+ * null instead of zero.
+ *
+ * @param {number} value - the number whose absolute value is to be returned
+ * @return {number} The absolute value of value or null if value is
+ * null.
+ * @public
+ * @static
+ * @memberof Utilities
+ */
+ abs: function(value) {
+ return value != null ? Math.abs(value) : null;
+ },
+
+ /**
+ * Returns whether the specified object has a property with the specified name 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} true if object has an own property with name.
+ * @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 string to upper case while remaining null-safe.
+ *
+ * @param {string} string - the string to be transformed to upper case
+ * @return {string} string transformed to upper case if string is not null.
+ * @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.}
+ * @memberof OptionManager#
+ */
+ this.options = {};
+
+ options.forEach(function(option) {
+ this.options[option.name] = option;
+ }, this);
+ }, {
+
+ /**
+ * Returns whether an option with the specified name is available.
+ *
+ * @param {string} name - the name of the {@link Option} whose existence is to be checked
+ * @return {boolean} true if an {@link Option} exists with name; otherwise
+ * false.
+ * @public
+ * @memberof OptionManager#
+ */
+ exists: function(name) {
+ return this.options[name] != null;
+ },
+
+ /**
+ * Returns the value of the option with the specified name on the target object provided.
+ *
+ * @param {string} name - the name of the {@link Option} whose value on target 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 name on target.
+ * @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 target object provided.
+ *
+ * @param {Object} target - the object from which the option name/value pairs are to be returned
+ * @return {Object.} A hash containing the name/value pairs of all options on target.
+ * @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 target object provided and then applies the initial values
+ * within the speciifed options.
+ *
+ * This method will throw an error if any of the names within options does not match an available option.
+ *
+ * This involves setting the default values and defining properties for all of the available options on
+ * target before finally calling {@link OptionMananger#setAll} with options and
+ * target. 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 target for a
+ * modifiable option, but only when done so via the defined property's setter.
+ *
+ * @param {Object.} 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
+ * target
+ * @return {void}
+ * @throws {Error} If options 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 name on the target object provided to
+ * value.
+ *
+ * This method will throw an error if name does not match an available option or matches an option that
+ * cannot be modified.
+ *
+ * If value is null 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 target 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 target
+ * @param {Object} target - the object on which value is to be set for the named {@link Option}
+ * @return {boolean} true if the underlying field on target was changed; otherwise
+ * false.
+ * @throws {Error} If name 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 options on the target object provided to their corresponding
+ * values.
+ *
+ * This method will throw an error if any of the names within options does not match an available option
+ * or matches an option that cannot be modified.
+ *
+ * If any value within options is null 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 target were changed as a
+ * result.
+ *
+ * @param {Object.} 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} true if any of the underlying fields on target were changed; otherwise
+ * false.
+ * @throws {Error} If options 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 option 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 name.
+ *
+ * @param {string} name - the name of the {@link Service} to be returned
+ * @return {Service} The {@link Service} is being managed with name.
+ * @throws {Error} If no {@link Service} is being managed with name.
+ * @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 name to the
+ * service provided.
+ *
+ * @param {string} name - the name of the {@link Service} to be managed with name
+ * @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 name.
+ * @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 canvas for rendering.
+ *
+ * @param {QRious~Options} [options] - the options to be used
+ * @throws {Error} If any options 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.} A copy of the applied options.
+ * @public
+ * @memberof QRious#
+ */
+ get: function() {
+ return optionManager.getAll(this);
+ },
+
+ /**
+ * Sets all of the specified options 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 options 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 mime 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 service 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 canvas element being used to render the QR code for this {@link QRious}.
+ *
+ * @return {*} The canvas element.
+ * @public
+ * @memberof QRious#
+ * @alias canvas
+ */
+ get: function() {
+ return this._canvasRenderer.getElement();
+ }
+ },
+
+ image: {
+ /**
+ * Returns the img element being used to render the QR code for this {@link QRious}.
+ *
+ * @return {*} The img 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 canvas or
+ * img. 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} must 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} must 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 element is a canvas.
+ *
+ * Implementations of {@link ElementService} must override this method with their own specific logic.
+ *
+ * @param {*} element - the element to be checked
+ * @return {boolean} true if element is a canvas; otherwise false.
+ * @public
+ * @abstract
+ * @memberof ElementService#
+ */
+ isCanvas: function(element) {},
+
+ /**
+ * Returns whether the specified element is an image.
+ *
+ * Implementations of {@link ElementService} must override this method with their own specific logic.
+ *
+ * @param {*} element - the element to be checked
+ * @return {boolean} true if element is an image; otherwise false.
+ * @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
\ No newline at end of file
diff --git a/www/static/js/site.js b/www/static/js/site.js
index 6be36bc..b8a8b79 100644
--- a/www/static/js/site.js
+++ b/www/static/js/site.js
@@ -23,6 +23,14 @@
copyToClipboard()
}
+ const onShowQR = async (e) => {
+ let btn = document.getElementById("qrButton")
+ btn.setAttribute("hidden", "hidden")
+ let qrCanvas = document.getElementById('qrCanvas')
+ qrCanvas.parentElement.removeAttribute("hidden")
+ new QRious({element: qrCanvas, value: getURL(), size: 200});
+ }
+
// Attach button click handler to submit action
const form = document.getElementById("form")
if (form !== null) {
@@ -40,6 +48,12 @@
})
}
+ // Attach QR code
+ const qrButton = document.getElementById("qrButton")
+ if (qrButton != null) {
+ qrButton.addEventListener("click", onShowQR)
+ }
+
// Decrypt if data is present
function decrypt(nacl) {
let pass = window.location.toString().split('#')
@@ -58,11 +72,28 @@
}
function copyToClipboard() {
- let aux = document.createElement("input")
- aux.setAttribute("value", document.getElementById('accessUrl').innerHTML)
- document.body.appendChild(aux)
- aux.select()
- document.execCommand("copy")
- document.body.removeChild(aux)
+ if (!navigator.clipboard) {
+ let aux = document.createElement("input")
+ aux.setAttribute("value", getURL())
+ document.body.appendChild(aux)
+ aux.select()
+ document.execCommand("copy")
+ document.body.removeChild(aux)
+ } else {
+ navigator.clipboard.writeText(getURL()).then(
+ function () {
+ // OK
+ })
+ .catch(
+ function () {
+ // TODO: Print to screen instead?
+ });
+ }
+
+
+ }
+
+ function getURL() {
+ return document.getElementById('accessUrl').innerHTML
}
}
diff --git a/www/templates/layouts/base.gohtml b/www/templates/layouts/base.gohtml
index 4ca3e38..57b4c66 100644
--- a/www/templates/layouts/base.gohtml
+++ b/www/templates/layouts/base.gohtml
@@ -47,6 +47,7 @@
+