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| 1 | +/** |
| 2 | + * Copyright (c) 2020, Travis Clarke (https://www.travismclarke.com/) |
| 3 | + * |
| 4 | + * This source code is licensed under the Apache-2.0 license found in the |
| 5 | + * LICENSE file in the root directory of this source tree. |
| 6 | + */ |
| 7 | + |
| 8 | +(function ($) { |
| 9 | + 'use strict'; |
| 10 | + |
| 11 | + $ = $ && Object.prototype.hasOwnProperty.call($, 'default') ? $['default'] : $; |
| 12 | + |
| 13 | + function _classCallCheck(instance, Constructor) { |
| 14 | + if (!(instance instanceof Constructor)) { |
| 15 | + throw new TypeError("Cannot call a class as a function"); |
| 16 | + } |
| 17 | + } |
| 18 | + |
| 19 | + function _defineProperties(target, props) { |
| 20 | + for (var i = 0; i < props.length; i++) { |
| 21 | + var descriptor = props[i]; |
| 22 | + descriptor.enumerable = descriptor.enumerable || false; |
| 23 | + descriptor.configurable = true; |
| 24 | + if ("value" in descriptor) descriptor.writable = true; |
| 25 | + Object.defineProperty(target, descriptor.key, descriptor); |
| 26 | + } |
| 27 | + } |
| 28 | + |
| 29 | + function _createClass(Constructor, protoProps, staticProps) { |
| 30 | + if (protoProps) _defineProperties(Constructor.prototype, protoProps); |
| 31 | + if (staticProps) _defineProperties(Constructor, staticProps); |
| 32 | + return Constructor; |
| 33 | + } |
| 34 | + |
| 35 | + var version = "2.0.0"; |
| 36 | + |
| 37 | + var RESIZE = "resize"; |
| 38 | + var LOAD = "load"; |
| 39 | + var USEMAP = "usemap"; |
| 40 | + var COORDS = "coords"; |
| 41 | + var COMPLETE = "complete"; |
| 42 | + /** |
| 43 | + * ImageMap main library constructor |
| 44 | + * |
| 45 | + * @param selector {string} CSS selector |
| 46 | + * @param wait {number} [wait=500] debounce wait interval |
| 47 | + * @constructor |
| 48 | + */ |
| 49 | + |
| 50 | + var ImageMap = /*#__PURE__*/function () { |
| 51 | + function ImageMap(selector, wait) { |
| 52 | + _classCallCheck(this, ImageMap); |
| 53 | + |
| 54 | + this.selector = selector instanceof Array ? selector : document.querySelectorAll(selector); |
| 55 | + if (document.readyState !== COMPLETE) window.addEventListener(LOAD, this.update.bind(this));else this.update(); |
| 56 | + window.addEventListener(RESIZE, this.debounce(this.update, wait).bind(this)); |
| 57 | + } |
| 58 | + |
| 59 | + _createClass(ImageMap, [{ |
| 60 | + key: "update", |
| 61 | + |
| 62 | + /** |
| 63 | + * Update |
| 64 | + */ |
| 65 | + value: function update() { |
| 66 | + var imgs = this.selector; |
| 67 | + |
| 68 | + for (var i = 0; i < imgs.length; i++) { |
| 69 | + var img = imgs[i]; |
| 70 | + if (img.getAttribute(USEMAP) === undefined) return; |
| 71 | + var newImg = img.cloneNode(); |
| 72 | + newImg.addEventListener(LOAD, this.handleImageLoad(img.offsetWidth, img.offsetHeight)); |
| 73 | + newImg.src = img.src; // required for IE |
| 74 | + } |
| 75 | + } |
| 76 | + /** |
| 77 | + * Debounce |
| 78 | + * |
| 79 | + * @param {function} func |
| 80 | + * @param {number} [wait=500] |
| 81 | + */ |
| 82 | + |
| 83 | + }, { |
| 84 | + key: "debounce", |
| 85 | + value: function debounce(func) { |
| 86 | + var _this = this; |
| 87 | + |
| 88 | + var wait = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 500; |
| 89 | + var timeout; |
| 90 | + return function () { |
| 91 | + for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) { |
| 92 | + args[_key] = arguments[_key]; |
| 93 | + } |
| 94 | + |
| 95 | + window.clearTimeout(timeout); |
| 96 | + timeout = window.setTimeout(function (ctx) { |
| 97 | + return func.apply(ctx, args); |
| 98 | + }, wait, _this); |
| 99 | + }; |
| 100 | + } |
| 101 | + /** |
| 102 | + * handleImageLoad |
| 103 | + * |
| 104 | + * @param {number} [offsetWidth=0] |
| 105 | + * @param {number} [offsetHeight=0] |
| 106 | + */ |
| 107 | + |
| 108 | + }, { |
| 109 | + key: "handleImageLoad", |
| 110 | + value: function handleImageLoad() { |
| 111 | + var offsetWidth = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0; |
| 112 | + var offsetHeight = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0; |
| 113 | + return function (e) { |
| 114 | + var w = e.target.width; |
| 115 | + var h = e.target.height; |
| 116 | + var wPercent = offsetWidth / 100; |
| 117 | + var hPercent = offsetHeight / 100; |
| 118 | + var mapName = e.target.getAttribute(USEMAP).replace(/^#/, ""); |
| 119 | + var areas = document.querySelectorAll(ImageMap.genAreaSelector(mapName)); |
| 120 | + |
| 121 | + var _loop = function _loop(i) { |
| 122 | + var area = areas[i]; |
| 123 | + var coordsString = area.dataset[COORDS] = area.dataset[COORDS] || area.getAttribute(COORDS); |
| 124 | + var coordsArrayOld = coordsString.split(","); |
| 125 | + var coordsArrayNew = coordsArrayOld.map(function (_, i) { |
| 126 | + return i % 2 === 0 ? Number(coordsArrayOld[i] / w * 100 * wPercent) : Number(coordsArrayOld[i] / h * 100 * hPercent); |
| 127 | + }); |
| 128 | + area.setAttribute(COORDS, coordsArrayNew.toString()); |
| 129 | + }; |
| 130 | + |
| 131 | + for (var i = 0; i < areas.length; i++) { |
| 132 | + _loop(i); |
| 133 | + } |
| 134 | + }; |
| 135 | + } |
| 136 | + }], [{ |
| 137 | + key: "genAreaSelector", |
| 138 | + value: function genAreaSelector(mapName) { |
| 139 | + return "map[name=\"".concat(mapName, "\"] area"); |
| 140 | + } |
| 141 | + }]); |
| 142 | + |
| 143 | + return ImageMap; |
| 144 | + }(); |
| 145 | + |
| 146 | + function _ImageMap(selector, wait) { |
| 147 | + return new ImageMap(selector, wait); |
| 148 | + } |
| 149 | + |
| 150 | + _ImageMap.VERSION = version; |
| 151 | + |
| 152 | + if ($ !== undefined && $.fn) { |
| 153 | + $.fn.imageMap = function (wait) { |
| 154 | + return new _ImageMap(this.toArray(), wait); |
| 155 | + }; |
| 156 | + } |
| 157 | + |
| 158 | +}($)); |
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