HTML 点击图片后悬浮放大图片-编程知识

引入插件

1.viewer.js

2.引入viewer.css

3.引入jquery-viewer.min.js

4.添加图片点击事件function click(){

$('<img>', {src: 图片url
}).viewer('show');

}

效果图：

可网上自行下载对应插件，或新建相关命名文件后，把我下文的js代码、css代码放进去

viewer.js

/*!* Viewer.js v1.2.0* https://fengyuanchen.github.io/viewerjs** Copyright 2015-present Chen Fengyuan* Released under the MIT license** Date: 2018-07-15T10:10:54.376Z*/(function (global, factory) {typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :typeof define === 'function' && define.amd ? define(factory) :(global.Viewer = factory());
}(this, (function () { 'use strict';var DEFAULTS = {/*** Define the initial index of image for viewing.* @type {number}*/initialViewIndex: 0,/*** Enable inline mode.* @type {boolean}*/inline: false,/*** Show the button on the top-right of the viewer.* @type {boolean}*/button: true,/*** Show the navbar.* @type {boolean | number}*/navbar: true,/*** Specify the visibility and the content of the title.* @type {boolean | number | Function | Array}*/title: false,/*** Show the toolbar.* @type {boolean | number | Object}*/toolbar: true,/*** Show the tooltip with image ratio (percentage) when zoom in or zoom out.* @type {boolean}*/tooltip: true,/*** Enable to move the image.* @type {boolean}*/movable: true,/*** Enable to zoom the image.* @type {boolean}*/zoomable: true,/*** Enable to rotate the image.* @type {boolean}*/rotatable: true,/*** Enable to scale the image.* @type {boolean}*/scalable: true,/*** Enable CSS3 Transition for some special elements.* @type {boolean}*/transition: true,/*** Enable to request fullscreen when play.* @type {boolean}*/fullscreen: true,/*** The amount of time to delay between automatically cycling an image when playing.* @type {number}*/interval: 5000,/*** Enable keyboard support.* @type {boolean}*/keyboard: true,/*** Enable a modal backdrop, specify `static` for a backdrop* which doesn't close the modal on click.* @type {boolean}*/backdrop: true,/*** Indicate if show a loading spinner when load image or not.* @type {boolean}*/loading: true,/*** Indicate if enable loop viewing or not.* @type {boolean}*/loop: true,/*** Min width of the viewer in inline mode.* @type {number}*/minWidth: 200,/*** Min height of the viewer in inline mode.* @type {number}*/minHeight: 100,/*** Define the ratio when zoom the image by wheeling mouse.* @type {number}*/zoomRatio: 0.1,/*** Define the min ratio of the image when zoom out.* @type {number}*/minZoomRatio: 0.01,/*** Define the max ratio of the image when zoom in.* @type {number}*/maxZoomRatio: 100,/*** Define the CSS `z-index` value of viewer in modal mode.* @type {number}*/zIndex: 99999,/*** Define the CSS `z-index` value of viewer in inline mode.* @type {number}*/zIndexInline: 0,/*** Define where to get the original image URL for viewing.* @type {string | Function}*/url: 'src',/*** Define where to put the viewer in modal mode.* @type {string | Element}*/container: 'body',/*** Filter the images for viewing. Return true if the image is viewable.* @type {Function}*/filter: null,/*** Indicate if toggle the image size between its natural size* and initial size when double click on the image or not.* @type {boolean}*/toggleOnDblclick: true,/*** Event shortcuts.* @type {Function}*/ready: null,show: null,shown: null,hide: null,hidden: null,view: null,viewed: null,zoom: null,zoomed: null};var TEMPLATE = '<div class="viewer-container" touch-action="none">' + '<div class="viewer-canvas"></div>' + '<div class="viewer-footer">' + '<div class="viewer-title"></div>' + '<div class="viewer-toolbar"></div>' + '<div class="viewer-navbar">' + '<ul class="viewer-list"></ul>' + '</div>' + '</div>' + '<div class="viewer-tooltip"></div>' + '<div role="button" class="viewer-button" data-viewer-action="mix"></div>' + '<div class="viewer-player"></div>' + '</div>';var IN_BROWSER = typeof window !== 'undefined';var WINDOW = IN_BROWSER ? window : {};var NAMESPACE = 'viewer';// Actionsvar ACTION_MOVE = 'move';var ACTION_SWITCH = 'switch';var ACTION_ZOOM = 'zoom';// Classesvar CLASS_ACTIVE = NAMESPACE + '-active';var CLASS_CLOSE = NAMESPACE + '-close';var CLASS_FADE = NAMESPACE + '-fade';var CLASS_FIXED = NAMESPACE + '-fixed';var CLASS_FULLSCREEN = NAMESPACE + '-fullscreen';var CLASS_FULLSCREEN_EXIT = NAMESPACE + '-fullscreen-exit';var CLASS_HIDE = NAMESPACE + '-hide';var CLASS_HIDE_MD_DOWN = NAMESPACE + '-hide-md-down';var CLASS_HIDE_SM_DOWN = NAMESPACE + '-hide-sm-down';var CLASS_HIDE_XS_DOWN = NAMESPACE + '-hide-xs-down';var CLASS_IN = NAMESPACE + '-in';var CLASS_INVISIBLE = NAMESPACE + '-invisible';var CLASS_LOADING = NAMESPACE + '-loading';var CLASS_MOVE = NAMESPACE + '-move';var CLASS_OPEN = NAMESPACE + '-open';var CLASS_SHOW = NAMESPACE + '-show';var CLASS_TRANSITION = NAMESPACE + '-transition';// Eventsvar EVENT_CLICK = 'click';var EVENT_DBLCLICK = 'dblclick';var EVENT_DRAG_START = 'dragstart';var EVENT_HIDDEN = 'hidden';var EVENT_HIDE = 'hide';var EVENT_KEY_DOWN = 'keydown';var EVENT_LOAD = 'load';var EVENT_POINTER_DOWN = WINDOW.PointerEvent ? 'pointerdown' : 'touchstart mousedown';var EVENT_POINTER_MOVE = WINDOW.PointerEvent ? 'pointermove' : 'touchmove mousemove';var EVENT_POINTER_UP = WINDOW.PointerEvent ? 'pointerup pointercancel' : 'touchend touchcancel mouseup';var EVENT_READY = 'ready';var EVENT_RESIZE = 'resize';var EVENT_SHOW = 'show';var EVENT_SHOWN = 'shown';var EVENT_TRANSITION_END = 'transitionend';var EVENT_VIEW = 'view';var EVENT_VIEWED = 'viewed';var EVENT_WHEEL = 'wheel mousewheel DOMMouseScroll';var EVENT_ZOOM = 'zoom';var EVENT_ZOOMED = 'zoomed';// Data keysvar DATA_ACTION = NAMESPACE + 'Action';var BUTTONS = ['zoom-in', 'zoom-out', 'one-to-one', 'reset', 'prev', 'play', 'next', 'rotate-left', 'rotate-right', 'flip-horizontal', 'flip-vertical'];var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {return typeof obj;} : function (obj) {return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;};var classCallCheck = function (instance, Constructor) {if (!(instance instanceof Constructor)) {throw new TypeError("Cannot call a class as a function");}};var createClass = function () {function defineProperties(target, props) {for (var i = 0; i < props.length; i++) {var descriptor = props[i];descriptor.enumerable = descriptor.enumerable || false;descriptor.configurable = true;if ("value" in descriptor) descriptor.writable = true;Object.defineProperty(target, descriptor.key, descriptor);}}return function (Constructor, protoProps, staticProps) {if (protoProps) defineProperties(Constructor.prototype, protoProps);if (staticProps) defineProperties(Constructor, staticProps);return Constructor;};}();/*** Check if the given value is a string.* @param {*} value - The value to check.* @returns {boolean} Returns `true` if the given value is a string, else `false`.*/function isString(value) {return typeof value === 'string';}/*** Check if the given value is not a number.*/var isNaN = Number.isNaN || WINDOW.isNaN;/*** Check if the given value is a number.* @param {*} value - The value to check.* @returns {boolean} Returns `true` if the given value is a number, else `false`.*/function isNumber(value) {return typeof value === 'number' && !isNaN(value);}/*** Check if the given value is undefined.* @param {*} value - The value to check.* @returns {boolean} Returns `true` if the given value is undefined, else `false`.*/function isUndefined(value) {return typeof value === 'undefined';}/*** Check if the given value is an object.* @param {*} value - The value to check.* @returns {boolean} Returns `true` if the given value is an object, else `false`.*/function isObject(value) {return (typeof value === 'undefined' ? 'undefined' : _typeof(value)) === 'object' && value !== null;}var hasOwnProperty = Object.prototype.hasOwnProperty;/*** Check if the given value is a plain object.* @param {*} value - The value to check.* @returns {boolean} Returns `true` if the given value is a plain object, else `false`.*/function isPlainObject(value) {if (!isObject(value)) {return false;}try {var _constructor = value.constructor;var prototype = _constructor.prototype;return _constructor && prototype && hasOwnProperty.call(prototype, 'isPrototypeOf');} catch (e) {return false;}}/*** Check if the given value is a function.* @param {*} value - The value to check.* @returns {boolean} Returns `true` if the given value is a function, else `false`.*/function isFunction(value) {return typeof value === 'function';}/*** Iterate the given data.* @param {*} data - The data to iterate.* @param {Function} callback - The process function for each element.* @returns {*} The original data.*/function forEach(data, callback) {if (data && isFunction(callback)) {if (Array.isArray(data) || isNumber(data.length) /* array-like */) {var length = data.length;var i = void 0;for (i = 0; i < length; i += 1) {if (callback.call(data, data[i], i, data) === false) {break;}}} else if (isObject(data)) {Object.keys(data).forEach(function (key) {callback.call(data, data[key], key, data);});}}return data;}/*** Extend the given object.* @param {*} obj - The object to be extended.* @param {*} args - The rest objects which will be merged to the first object.* @returns {Object} The extended object.*/var assign = Object.assign || function assign(obj) {for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {args[_key - 1] = arguments[_key];}if (isObject(obj) && args.length > 0) {args.forEach(function (arg) {if (isObject(arg)) {Object.keys(arg).forEach(function (key) {obj[key] = arg[key];});}});}return obj;};var REGEXP_SUFFIX = /^(?:width|height|left|top|marginLeft|marginTop)$/;/*** Apply styles to the given element.* @param {Element} element - The target element.* @param {Object} styles - The styles for applying.*/function setStyle(element, styles) {var style = element.style;forEach(styles, function (value, property) {if (REGEXP_SUFFIX.test(property) && isNumber(value)) {value += 'px';}style[property] = value;});}/*** Check if the given element has a special class.* @param {Element} element - The element to check.* @param {string} value - The class to search.* @returns {boolean} Returns `true` if the special class was found.*/function hasClass(element, value) {return element.classList ? element.classList.contains(value) : element.className.indexOf(value) > -1;}/*** Add classes to the given element.* @param {Element} element - The target element.* @param {string} value - The classes to be added.*/function addClass(element, value) {if (!value) {return;}if (isNumber(element.length)) {forEach(element, function (elem) {addClass(elem, value);});return;}if (element.classList) {element.classList.add(value);return;}var className = element.className.trim();if (!className) {element.className = value;} else if (className.indexOf(value) < 0) {element.className = className + ' ' + value;}}/*** Remove classes from the given element.* @param {Element} element - The target element.* @param {string} value - The classes to be removed.*/function removeClass(element, value) {if (!value) {return;}if (isNumber(element.length)) {forEach(element, function (elem) {removeClass(elem, value);});return;}if (element.classList) {element.classList.remove(value);return;}if (element.className.indexOf(value) >= 0) {element.className = element.className.replace(value, '');}}/*** Add or remove classes from the given element.* @param {Element} element - The target element.* @param {string} value - The classes to be toggled.* @param {boolean} added - Add only.*/function toggleClass(element, value, added) {if (!value) {return;}if (isNumber(element.length)) {forEach(element, function (elem) {toggleClass(elem, value, added);});return;}// IE10-11 doesn't support the second parameter of `classList.toggle`if (added) {addClass(element, value);} else {removeClass(element, value);}}var REGEXP_HYPHENATE = /([a-z\d])([A-Z])/g;/*** Transform the given string from camelCase to kebab-case* @param {string} value - The value to transform.* @returns {string} The transformed value.*/function hyphenate(value) {return value.replace(REGEXP_HYPHENATE, '$1-$2').toLowerCase();}/*** Get data from the given element.* @param {Element} element - The target element.* @param {string} name - The data key to get.* @returns {string} The data value.*/function getData(element, name) {if (isObject(element[name])) {return element[name];}if (element.dataset) {return element.dataset[name];}return element.getAttribute('data-' + hyphenate(name));}/*** Set data to the given element.* @param {Element} element - The target element.* @param {string} name - The data key to set.* @param {string} data - The data value.*/function setData(element, name, data) {if (isObject(data)) {element[name] = data;} else if (element.dataset) {element.dataset[name] = data;} else {element.setAttribute('data-' + hyphenate(name), data);}}/*** Remove data from the given element.* @param {Element} element - The target element.* @param {string} name - The data key to remove.*/function removeData(element, name) {if (isObject(element[name])) {try {delete element[name];} catch (e) {element[name] = undefined;}} else if (element.dataset) {// #128 Safari not allows to delete dataset propertytry {delete element.dataset[name];} catch (e) {element.dataset[name] = undefined;}} else {element.removeAttribute('data-' + hyphenate(name));}}var REGEXP_SPACES = /\s\s*/;var onceSupported = function () {var supported = false;if (IN_BROWSER) {var once = false;var listener = function listener() {};var options = Object.defineProperty({}, 'once', {get: function get$$1() {supported = true;return once;},/*** This setter can fix a `TypeError` in strict mode* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Getter_only}* @param {boolean} value - The value to set*/set: function set$$1(value) {once = value;}});WINDOW.addEventListener('test', listener, options);WINDOW.removeEventListener('test', listener, options);}return supported;}();/*** Remove event listener from the target element.* @param {Element} element - The event target.* @param {string} type - The event type(s).* @param {Function} listener - The event listener.* @param {Object} options - The event options.*/function removeListener(element, type, listener) {var options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};var handler = listener;type.trim().split(REGEXP_SPACES).forEach(function (event) {if (!onceSupported) {var listeners = element.listeners;if (listeners && listeners[event] && listeners[event][listener]) {handler = listeners[event][listener];delete listeners[event][listener];if (Object.keys(listeners[event]).length === 0) {delete listeners[event];}if (Object.keys(listeners).length === 0) {delete element.listeners;}}}element.removeEventListener(event, handler, options);});}/*** Add event listener to the target element.* @param {Element} element - The event target.* @param {string} type - The event type(s).* @param {Function} listener - The event listener.* @param {Object} options - The event options.*/function addListener(element, type, listener) {var options = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};var _handler = listener;type.trim().split(REGEXP_SPACES).forEach(function (event) {if (options.once && !onceSupported) {var _element$listeners = element.listeners,listeners = _element$listeners === undefined ? {} : _element$listeners;_handler = function handler() {for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {args[_key2] = arguments[_key2];}delete listeners[event][listener];element.removeEventListener(event, _handler, options);listener.apply(element, args);};if (!listeners[event]) {listeners[event] = {};}if (listeners[event][listener]) {element.removeEventListener(event, listeners[event][listener], options);}listeners[event][listener] = _handler;element.listeners = listeners;}element.addEventListener(event, _handler, options);});}/*** Dispatch event on the target element.* @param {Element} element - The event target.* @param {string} type - The event type(s).* @param {Object} data - The additional event data.* @returns {boolean} Indicate if the event is default prevented or not.*/function dispatchEvent(element, type, data) {var event = void 0;// Event and CustomEvent on IE9-11 are global objects, not constructorsif (isFunction(Event) && isFunction(CustomEvent)) {event = new CustomEvent(type, {detail: data,bubbles: true,cancelable: true});} else {event = document.createEvent('CustomEvent');event.initCustomEvent(type, true, true, data);}return element.dispatchEvent(event);}/*** Get the offset base on the document.* @param {Element} element - The target element.* @returns {Object} The offset data.*/function getOffset(element) {var box = element.getBoundingClientRect();return {left: box.left + (window.pageXOffset - document.documentElement.clientLeft),top: box.top + (window.pageYOffset - document.documentElement.clientTop)};}/*** Get transforms base on the given object.* @param {Object} obj - The target object.* @returns {string} A string contains transform values.*/function getTransforms(_ref) {var rotate = _ref.rotate,scaleX = _ref.scaleX,scaleY = _ref.scaleY,translateX = _ref.translateX,translateY = _ref.translateY;var values = [];if (isNumber(translateX) && translateX !== 0) {values.push('translateX(' + translateX + 'px)');}if (isNumber(translateY) && translateY !== 0) {values.push('translateY(' + translateY + 'px)');}// Rotate should come first before scale to match orientation transformif (isNumber(rotate) && rotate !== 0) {values.push('rotate(' + rotate + 'deg)');}if (isNumber(scaleX) && scaleX !== 1) {values.push('scaleX(' + scaleX + ')');}if (isNumber(scaleY) && scaleY !== 1) {values.push('scaleY(' + scaleY + ')');}var transform = values.length ? values.join(' ') : 'none';return {WebkitTransform: transform,msTransform: transform,transform: transform};}/*** Get an image name from an image url.* @param {string} url - The target url.* @example* // picture.jpg* getImageNameFromURL('http://domain.com/path/to/picture.jpg?size=1280×960')* @returns {string} A string contains the image name.*/function getImageNameFromURL(url) {return isString(url) ? url.replace(/^.*\//, '').replace(/[?&#].*$/, '') : '';}var IS_SAFARI = WINDOW.navigator && /(Macintosh|iPhone|iPod|iPad).*AppleWebKit/i.test(WINDOW.navigator.userAgent);/*** Get an image's natural sizes.* @param {string} image - The target image.* @param {Function} callback - The callback function.* @returns {HTMLImageElement} The new image.*/function getImageNaturalSizes(image, callback) {var newImage = document.createElement('img');// Modern browsers (except Safari)if (image.naturalWidth && !IS_SAFARI) {callback(image.naturalWidth, image.naturalHeight);return newImage;}var body = document.body || document.documentElement;newImage.onload = function () {callback(newImage.width, newImage.height);if (!IS_SAFARI) {body.removeChild(newImage);}};newImage.src = image.src;// iOS Safari will convert the image automatically// with its orientation once append it into DOMif (!IS_SAFARI) {newImage.style.cssText = 'left:0;' + 'max-height:none!important;' + 'max-width:none!important;' + 'min-height:0!important;' + 'min-width:0!important;' + 'opacity:0;' + 'position:absolute;' + 'top:0;' + 'z-index:-1;';body.appendChild(newImage);}return newImage;}/*** Get the related class name of a responsive type number.* @param {string} type - The responsive type.* @returns {string} The related class name.*/function getResponsiveClass(type) {switch (type) {case 2:return CLASS_HIDE_XS_DOWN;case 3:return CLASS_HIDE_SM_DOWN;case 4:return CLASS_HIDE_MD_DOWN;default:return '';}}/*** Get the max ratio of a group of pointers.* @param {string} pointers - The target pointers.* @returns {number} The result ratio.*/function getMaxZoomRatio(pointers) {var pointers2 = assign({}, pointers);var ratios = [];forEach(pointers, function (pointer, pointerId) {delete pointers2[pointerId];forEach(pointers2, function (pointer2) {var x1 = Math.abs(pointer.startX - pointer2.startX);var y1 = Math.abs(pointer.startY - pointer2.startY);var x2 = Math.abs(pointer.endX - pointer2.endX);var y2 = Math.abs(pointer.endY - pointer2.endY);var z1 = Math.sqrt(x1 * x1 + y1 * y1);var z2 = Math.sqrt(x2 * x2 + y2 * y2);var ratio = (z2 - z1) / z1;ratios.push(ratio);});});ratios.sort(function (a, b) {return Math.abs(a) < Math.abs(b);});return ratios[0];}/*** Get a pointer from an event object.* @param {Object} event - The target event object.* @param {boolean} endOnly - Indicates if only returns the end point coordinate or not.* @returns {Object} The result pointer contains start and/or end point coordinates.*/function getPointer(_ref2, endOnly) {var pageX = _ref2.pageX,pageY = _ref2.pageY;var end = {endX: pageX,endY: pageY};return endOnly ? end : assign({startX: pageX,startY: pageY}, end);}/*** Get the center point coordinate of a group of pointers.* @param {Object} pointers - The target pointers.* @returns {Object} The center point coordinate.*/function getPointersCenter(pointers) {var pageX = 0;var pageY = 0;var count = 0;forEach(pointers, function (_ref3) {var startX = _ref3.startX,startY = _ref3.startY;pageX += startX;pageY += startY;count += 1;});pageX /= count;pageY /= count;return {pageX: pageX,pageY: pageY};}var render = {render: function render() {this.initContainer();this.initViewer();this.initList();this.renderViewer();},initContainer: function initContainer() {this.containerData = {width: window.innerWidth,height: window.innerHeight};},initViewer: function initViewer() {var options = this.options,parent = this.parent;var viewerData = void 0;if (options.inline) {viewerData = {width: Math.max(parent.offsetWidth, options.minWidth),height: Math.max(parent.offsetHeight, options.minHeight)};this.parentData = viewerData;}if (this.fulled || !viewerData) {viewerData = this.containerData;}this.viewerData = assign({}, viewerData);},renderViewer: function renderViewer() {if (this.options.inline && !this.fulled) {setStyle(this.viewer, this.viewerData);}},initList: function initList() {var _this = this;var element = this.element,options = this.options,list = this.list;var items = [];forEach(this.images, function (image, i) {var src = image.src;var alt = image.alt || getImageNameFromURL(src);var url = options.url;if (isString(url)) {url = image.getAttribute(url);} else if (isFunction(url)) {url = url.call(_this, image);}if (src || url) {items.push('<li>' + '<img' + (' src="' + (src || url) + '"') + ' role="button"' + ' data-viewer-action="view"' + (' data-index="' + i + '"') + (' data-original-url="' + (url || src) + '"') + (' alt="' + alt + '"') + '>' + '</li>');}});list.innerHTML = items.join('');this.items = list.getElementsByTagName('li');forEach(this.items, function (item) {var image = item.firstElementChild;setData(image, 'filled', true);if (options.loading) {addClass(item, CLASS_LOADING);}addListener(image, EVENT_LOAD, function (event) {if (options.loading) {removeClass(item, CLASS_LOADING);}_this.loadImage(event);}, {once: true});});if (options.transition) {addListener(element, EVENT_VIEWED, function () {addClass(list, CLASS_TRANSITION);}, {once: true});}},renderList: function renderList(index) {var i = index || this.index;var width = this.items[i].offsetWidth || 30;var outerWidth = width + 1; // 1 pixel of `margin-left` width// Place the active item in the center of the screensetStyle(this.list, assign({width: outerWidth * this.length}, getTransforms({translateX: (this.viewerData.width - width) / 2 - outerWidth * i})));},resetList: function resetList() {var list = this.list;list.innerHTML = '';removeClass(list, CLASS_TRANSITION);setStyle(list, getTransforms({translateX: 0}));},initImage: function initImage(done) {var _this2 = this;var options = this.options,image = this.image,viewerData = this.viewerData;var footerHeight = this.footer.offsetHeight;var viewerWidth = viewerData.width;var viewerHeight = Math.max(viewerData.height - footerHeight, footerHeight);var oldImageData = this.imageData || {};var sizingImage = void 0;this.imageInitializing = {abort: function abort() {sizingImage.onload = null;}};sizingImage = getImageNaturalSizes(image, function (naturalWidth, naturalHeight) {var aspectRatio = naturalWidth / naturalHeight;var width = viewerWidth;var height = viewerHeight;_this2.imageInitializing = false;if (viewerHeight * aspectRatio > viewerWidth) {height = viewerWidth / aspectRatio;} else {width = viewerHeight * aspectRatio;}width = Math.min(width * 0.9, naturalWidth);height = Math.min(height * 0.9, naturalHeight);var imageData = {naturalWidth: naturalWidth,naturalHeight: naturalHeight,aspectRatio: aspectRatio,ratio: width / naturalWidth,width: width,height: height,left: (viewerWidth - width) / 2,top: (viewerHeight - height) / 2};var initialImageData = assign({}, imageData);if (options.rotatable) {imageData.rotate = oldImageData.rotate || 0;initialImageData.rotate = 0;}if (options.scalable) {imageData.scaleX = oldImageData.scaleX || 1;imageData.scaleY = oldImageData.scaleY || 1;initialImageData.scaleX = 1;initialImageData.scaleY = 1;}_this2.imageData = imageData;_this2.initialImageData = initialImageData;if (done) {done();}});},renderImage: function renderImage(done) {var _this3 = this;var image = this.image,imageData = this.imageData;setStyle(image, assign({width: imageData.width,height: imageData.height,marginLeft: imageData.left,marginTop: imageData.top}, getTransforms(imageData)));if (done) {if ((this.viewing || this.zooming) && this.options.transition) {var onTransitionEnd = function onTransitionEnd() {_this3.imageRendering = false;done();};this.imageRendering = {abort: function abort() {removeListener(image, EVENT_TRANSITION_END, onTransitionEnd);}};addListener(image, EVENT_TRANSITION_END, onTransitionEnd, {once: true});} else {done();}}},resetImage: function resetImage() {// this.image only defined after viewedif (this.viewing || this.viewed) {var image = this.image;if (this.viewing) {this.viewing.abort();}image.parentNode.removeChild(image);this.image = null;}}};var events = {bind: function bind() {var canvas = this.canvas,element = this.element,viewer = this.viewer;addListener(viewer, EVENT_CLICK, this.onClick = this.click.bind(this));addListener(viewer, EVENT_WHEEL, this.onWheel = this.wheel.bind(this));addListener(viewer, EVENT_DRAG_START, this.onDragStart = this.dragstart.bind(this));if (this.options.toggleOnDblclick) {addListener(canvas, EVENT_DBLCLICK, this.onDblclick = this.dblclick.bind(this));}addListener(canvas, EVENT_POINTER_DOWN, this.onPointerDown = this.pointerdown.bind(this));addListener(element.ownerDocument, EVENT_POINTER_MOVE, this.onPointerMove = this.pointermove.bind(this));addListener(element.ownerDocument, EVENT_POINTER_UP, this.onPointerUp = this.pointerup.bind(this));addListener(element.ownerDocument, EVENT_KEY_DOWN, this.onKeyDown = this.keydown.bind(this));addListener(window, EVENT_RESIZE, this.onResize = this.resize.bind(this));},unbind: function unbind() {var canvas = this.canvas,element = this.element,viewer = this.viewer;removeListener(viewer, EVENT_CLICK, this.onClick);removeListener(viewer, EVENT_WHEEL, this.onWheel);removeListener(viewer, EVENT_DRAG_START, this.onDragStart);if (this.options.toggleOnDblclick) {removeListener(canvas, EVENT_DBLCLICK, this.onDblclick);}removeListener(canvas, EVENT_POINTER_DOWN, this.onPointerDown);removeListener(element.ownerDocument, EVENT_POINTER_MOVE, this.onPointerMove);removeListener(element.ownerDocument, EVENT_POINTER_UP, this.onPointerUp);removeListener(element.ownerDocument, EVENT_KEY_DOWN, this.onKeyDown);removeListener(window, EVENT_RESIZE, this.onResize);}};var handlers = {click: function click(_ref) {var target = _ref.target;var options = this.options,imageData = this.imageData;var action = getData(target, DATA_ACTION);switch (action) {case 'mix':if (this.played) {this.stop();} else if (options.inline) {if (this.fulled) {this.exit();} else {this.full();}} else {this.hide();}break;case 'hide':this.hide();break;case 'view':this.view(getData(target, 'index'));break;case 'zoom-in':this.zoom(0.1, true);break;case 'zoom-out':this.zoom(-0.1, true);break;case 'one-to-one':this.toggle();break;case 'reset':this.reset();break;case 'prev':this.prev(options.loop);break;case 'play':this.play(options.fullscreen);break;case 'next':this.next(options.loop);break;case 'rotate-left':this.rotate(-90);break;case 'rotate-right':this.rotate(90);break;case 'flip-horizontal':this.scaleX(-imageData.scaleX || -1);break;case 'flip-vertical':this.scaleY(-imageData.scaleY || -1);break;default:if (this.played) {this.stop();}}},dblclick: function dblclick(event) {if (event.target.parentElement === this.canvas) {this.toggle();}},load: function load() {var _this = this;if (this.timeout) {clearTimeout(this.timeout);this.timeout = false;}var element = this.element,options = this.options,image = this.image,index = this.index,viewerData = this.viewerData;removeClass(image, CLASS_INVISIBLE);if (options.loading) {removeClass(this.canvas, CLASS_LOADING);}image.style.cssText = 'height:0;' + ('margin-left:' + viewerData.width / 2 + 'px;') + ('margin-top:' + viewerData.height / 2 + 'px;') + 'max-width:none!important;' + 'position:absolute;' + 'width:0;';this.initImage(function () {toggleClass(image, CLASS_MOVE, options.movable);toggleClass(image, CLASS_TRANSITION, options.transition);_this.renderImage(function () {_this.viewed = true;_this.viewing = false;if (isFunction(options.viewed)) {addListener(element, EVENT_VIEWED, options.viewed, {once: true});}dispatchEvent(element, EVENT_VIEWED, {originalImage: _this.images[index],index: index,image: image});});});},loadImage: function loadImage(e) {var image = e.target;var parent = image.parentNode;var parentWidth = parent.offsetWidth || 30;var parentHeight = parent.offsetHeight || 50;var filled = !!getData(image, 'filled');getImageNaturalSizes(image, function (naturalWidth, naturalHeight) {var aspectRatio = naturalWidth / naturalHeight;var width = parentWidth;var height = parentHeight;if (parentHeight * aspectRatio > parentWidth) {if (filled) {width = parentHeight * aspectRatio;} else {height = parentWidth / aspectRatio;}} else if (filled) {height = parentWidth / aspectRatio;} else {width = parentHeight * aspectRatio;}setStyle(image, assign({width: width,height: height}, getTransforms({translateX: (parentWidth - width) / 2,translateY: (parentHeight - height) / 2})));});},keydown: function keydown(e) {var options = this.options;if (!this.fulled || !options.keyboard) {return;}switch (e.keyCode || e.which || e.charCode) {// Escapecase 27:if (this.played) {this.stop();} else if (options.inline) {if (this.fulled) {this.exit();}} else {this.hide();}break;// Spacecase 32:if (this.played) {this.stop();}break;// ArrowLeftcase 37:this.prev(options.loop);break;// ArrowUpcase 38:// Prevent scroll on Firefoxe.preventDefault();// Zoom inthis.zoom(options.zoomRatio, true);break;// ArrowRightcase 39:this.next(options.loop);break;// ArrowDowncase 40:// Prevent scroll on Firefoxe.preventDefault();// Zoom outthis.zoom(-options.zoomRatio, true);break;// Ctrl + 0case 48:// Fall through// Ctrl + 1// eslint-disable-next-line no-fallthroughcase 49:if (e.ctrlKey) {e.preventDefault();this.toggle();}break;default:}},dragstart: function dragstart(e) {if (e.target.tagName.toLowerCase() === 'img') {e.preventDefault();}},pointerdown: function pointerdown(e) {var options = this.options,pointers = this.pointers;if (!this.viewed || this.showing || this.viewing || this.hiding) {return;}// This line is required for preventing page zooming in iOS browserse.preventDefault();if (e.changedTouches) {forEach(e.changedTouches, function (touch) {pointers[touch.identifier] = getPointer(touch);});} else {pointers[e.pointerId || 0] = getPointer(e);}var action = options.movable ? ACTION_MOVE : false;if (Object.keys(pointers).length > 1) {action = ACTION_ZOOM;} else if ((e.pointerType === 'touch' || e.type === 'touchstart') && this.isSwitchable()) {action = ACTION_SWITCH;}if (options.transition && (action === ACTION_MOVE || action === ACTION_ZOOM)) {removeClass(this.image, CLASS_TRANSITION);}this.action = action;},pointermove: function pointermove(e) {var pointers = this.pointers,action = this.action;if (!this.viewed || !action) {return;}e.preventDefault();if (e.changedTouches) {forEach(e.changedTouches, function (touch) {assign(pointers[touch.identifier], getPointer(touch, true));});} else {assign(pointers[e.pointerId || 0], getPointer(e, true));}this.change(e);},pointerup: function pointerup(e) {var action = this.action,pointers = this.pointers;if (e.changedTouches) {forEach(e.changedTouches, function (touch) {delete pointers[touch.identifier];});} else {delete pointers[e.pointerId || 0];}if (!action) {return;}e.preventDefault();if (this.options.transition && (action === ACTION_MOVE || action === ACTION_ZOOM)) {addClass(this.image, CLASS_TRANSITION);}this.action = false;},resize: function resize() {var _this2 = this;if (!this.isShown || this.hiding) {return;}this.initContainer();this.initViewer();this.renderViewer();this.renderList();if (this.viewed) {this.initImage(function () {_this2.renderImage();});}if (this.played) {if (this.options.fullscreen && this.fulled && !document.fullscreenElement && !document.mozFullScreenElement && !document.webkitFullscreenElement && !document.msFullscreenElement) {this.stop();return;}forEach(this.player.getElementsByTagName('img'), function (image) {addListener(image, EVENT_LOAD, _this2.loadImage.bind(_this2), {once: true});dispatchEvent(image, EVENT_LOAD);});}},wheel: function wheel(e) {var _this3 = this;if (!this.viewed) {return;}e.preventDefault();// Limit wheel speed to prevent zoom too fastif (this.wheeling) {return;}this.wheeling = true;setTimeout(function () {_this3.wheeling = false;}, 50);var ratio = Number(this.options.zoomRatio) || 0.1;var delta = 1;if (e.deltaY) {delta = e.deltaY > 0 ? 1 : -1;} else if (e.wheelDelta) {delta = -e.wheelDelta / 120;} else if (e.detail) {delta = e.detail > 0 ? 1 : -1;}this.zoom(-delta * ratio, true, e);}};var methods = {/** Show the viewer (only available in modal mode)* @param {boolean} [immediate=false] - Indicates if show the viewer immediately or not.* @returns {Viewer} this*/show: function show() {var immediate = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;var element = this.element,options = this.options;if (options.inline || this.showing || this.isShown || this.showing) {return this;}if (!this.ready) {this.build();if (this.ready) {this.show(immediate);}return this;}if (isFunction(options.show)) {addListener(element, EVENT_SHOW, options.show, {once: true});}if (dispatchEvent(element, EVENT_SHOW) === false || !this.ready) {return this;}if (this.hiding) {this.transitioning.abort();}this.showing = true;this.open();var viewer = this.viewer;removeClass(viewer, CLASS_HIDE);if (options.transition && !immediate) {var shown = this.shown.bind(this);this.transitioning = {abort: function abort() {removeListener(viewer, EVENT_TRANSITION_END, shown);removeClass(viewer, CLASS_IN);}};addClass(viewer, CLASS_TRANSITION);// Force reflow to enable CSS3 transition// eslint-disable-next-lineviewer.offsetWidth;addListener(viewer, EVENT_TRANSITION_END, shown, {once: true});addClass(viewer, CLASS_IN);} else {addClass(viewer, CLASS_IN);this.shown();}return this;},/*** Hide the viewer (only available in modal mode)* @param {boolean} [immediate=false] - Indicates if hide the viewer immediately or not.* @returns {Viewer} this*/hide: function hide() {var immediate = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;var element = this.element,options = this.options;if (options.inline || this.hiding || !(this.isShown || this.showing)) {return this;}if (isFunction(options.hide)) {addListener(element, EVENT_HIDE, options.hide, {once: true});}if (dispatchEvent(element, EVENT_HIDE) === false) {return this;}if (this.showing) {this.transitioning.abort();}this.hiding = true;if (this.played) {this.stop();} else if (this.viewing) {this.viewing.abort();}var viewer = this.viewer;if (options.transition && !immediate) {var hidden = this.hidden.bind(this);var hide = function hide() {addListener(viewer, EVENT_TRANSITION_END, hidden, {once: true});removeClass(viewer, CLASS_IN);};this.transitioning = {abort: function abort() {if (this.viewed) {removeListener(this.image, EVENT_TRANSITION_END, hide);} else {removeListener(viewer, EVENT_TRANSITION_END, hidden);}}};if (this.viewed) {addListener(this.image, EVENT_TRANSITION_END, hide, {once: true});this.zoomTo(0, false, false, true);} else {hide();}} else {removeClass(viewer, CLASS_IN);this.hidden();}return this;},/*** View one of the images with image's index* @param {number} index - The index of the image to view.* @returns {Viewer} this*/view: function view() {var _this = this;var index = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : this.options.initialViewIndex;index = Number(index) || 0;if (!this.isShown) {this.index = index;return this.show();}if (this.hiding || this.played || index < 0 || index >= this.length || this.viewed && index === this.index) {return this;}if (this.viewing) {this.viewing.abort();}var element = this.element,options = this.options,title = this.title,canvas = this.canvas;var item = this.items[index];var img = item.querySelector('img');var url = getData(img, 'originalUrl');var alt = img.getAttribute('alt');var image = document.createElement('img');image.src = url;image.alt = alt;if (isFunction(options.view)) {addListener(element, EVENT_VIEW, options.view, {once: true});}if (dispatchEvent(element, EVENT_VIEW, {originalImage: this.images[index],index: index,image: image}) === false || !this.isShown || this.hiding || this.played) {return this;}this.image = image;removeClass(this.items[this.index], CLASS_ACTIVE);addClass(item, CLASS_ACTIVE);this.viewed = false;this.index = index;this.imageData = {};addClass(image, CLASS_INVISIBLE);if (options.loading) {addClass(canvas, CLASS_LOADING);}canvas.innerHTML = '';canvas.appendChild(image);// Center current itemthis.renderList();// Clear titletitle.innerHTML = '';// Generate title after viewedvar onViewed = function onViewed() {var imageData = _this.imageData;var render = Array.isArray(options.title) ? options.title[1] : options.title;title.innerHTML = isFunction(render) ? render.call(_this, image, imageData) : alt + ' (' + imageData.naturalWidth + ' \xD7 ' + imageData.naturalHeight + ')';};var onLoad = void 0;addListener(element, EVENT_VIEWED, onViewed, {once: true});this.viewing = {abort: function abort() {removeListener(element, EVENT_VIEWED, onViewed);if (image.complete) {if (this.imageRendering) {this.imageRendering.abort();} else if (this.imageInitializing) {this.imageInitializing.abort();}} else {removeListener(image, EVENT_LOAD, onLoad);if (this.timeout) {clearTimeout(this.timeout);}}}};if (image.complete) {this.load();} else {addListener(image, EVENT_LOAD, onLoad = this.load.bind(this), {once: true});if (this.timeout) {clearTimeout(this.timeout);}// Make the image visible if it fails to load within 1sthis.timeout = setTimeout(function () {removeClass(image, CLASS_INVISIBLE);_this.timeout = false;}, 1000);}return this;},/*** View the previous image* @param {boolean} [loop=false] - Indicate if view the last one* when it is the first one at present.* @returns {Viewer} this*/prev: function prev() {var loop = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;var index = this.index - 1;if (index < 0) {index = loop ? this.length - 1 : 0;}this.view(index);return this;},/*** View the next image* @param {boolean} [loop=false] - Indicate if view the first one* when it is the last one at present.* @returns {Viewer} this*/next: function next() {var loop = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;var maxIndex = this.length - 1;var index = this.index + 1;if (index > maxIndex) {index = loop ? 0 : maxIndex;}this.view(index);return this;},/*** Move the image with relative offsets.* @param {number} offsetX - The relative offset distance on the x-axis.* @param {number} offsetY - The relative offset distance on the y-axis.* @returns {Viewer} this*/move: function move(offsetX, offsetY) {var imageData = this.imageData;this.moveTo(isUndefined(offsetX) ? offsetX : imageData.left + Number(offsetX), isUndefined(offsetY) ? offsetY : imageData.top + Number(offsetY));return this;},/*** Move the image to an absolute point.* @param {number} x - The x-axis coordinate.* @param {number} [y=x] - The y-axis coordinate.* @returns {Viewer} this*/moveTo: function moveTo(x) {var y = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : x;var imageData = this.imageData;x = Number(x);y = Number(y);if (this.viewed && !this.played && this.options.movable) {var changed = false;if (isNumber(x)) {imageData.left = x;changed = true;}if (isNumber(y)) {imageData.top = y;changed = true;}if (changed) {this.renderImage();}}return this;},/*** Zoom the image with a relative ratio.* @param {number} ratio - The target ratio.* @param {boolean} [hasTooltip=false] - Indicates if it has a tooltip or not.* @param {Event} [_originalEvent=null] - The original event if any.* @returns {Viewer} this*/zoom: function zoom(ratio) {var hasTooltip = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;var _originalEvent = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;var imageData = this.imageData;ratio = Number(ratio);if (ratio < 0) {ratio = 1 / (1 - ratio);} else {ratio = 1 + ratio;}this.zoomTo(imageData.width * ratio / imageData.naturalWidth, hasTooltip, _originalEvent);return this;},/*** Zoom the image to an absolute ratio.* @param {number} ratio - The target ratio.* @param {boolean} [hasTooltip=false] - Indicates if it has a tooltip or not.* @param {Event} [_originalEvent=null] - The original event if any.* @param {Event} [_zoomable=false] - Indicates if the current zoom is available or not.* @returns {Viewer} this*/zoomTo: function zoomTo(ratio) {var hasTooltip = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;var _this2 = this;var _originalEvent = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;var _zoomable = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;var element = this.element,options = this.options,pointers = this.pointers,imageData = this.imageData;ratio = Math.max(0, ratio);if (isNumber(ratio) && this.viewed && !this.played && (_zoomable || options.zoomable)) {if (!_zoomable) {var minZoomRatio = Math.max(0.01, options.minZoomRatio);var maxZoomRatio = Math.min(100, options.maxZoomRatio);ratio = Math.min(Math.max(ratio, minZoomRatio), maxZoomRatio);}if (_originalEvent && ratio > 0.95 && ratio < 1.05) {ratio = 1;}var newWidth = imageData.naturalWidth * ratio;var newHeight = imageData.naturalHeight * ratio;var oldRatio = imageData.width / imageData.naturalWidth;if (isFunction(options.zoom)) {addListener(element, EVENT_ZOOM, options.zoom, {once: true});}if (dispatchEvent(element, EVENT_ZOOM, {ratio: ratio,oldRatio: oldRatio,originalEvent: _originalEvent}) === false) {return this;}this.zooming = true;if (_originalEvent) {var offset = getOffset(this.viewer);var center = pointers && Object.keys(pointers).length ? getPointersCenter(pointers) : {pageX: _originalEvent.pageX,pageY: _originalEvent.pageY};// Zoom from the triggering point of the eventimageData.left -= (newWidth - imageData.width) * ((center.pageX - offset.left - imageData.left) / imageData.width);imageData.top -= (newHeight - imageData.height) * ((center.pageY - offset.top - imageData.top) / imageData.height);} else {// Zoom from the center of the imageimageData.left -= (newWidth - imageData.width) / 2;imageData.top -= (newHeight - imageData.height) / 2;}imageData.width = newWidth;imageData.height = newHeight;imageData.ratio = ratio;this.renderImage(function () {_this2.zooming = false;if (isFunction(options.zoomed)) {addListener(element, EVENT_ZOOMED, options.zoomed, {once: true});}dispatchEvent(element, EVENT_ZOOMED, {ratio: ratio,oldRatio: oldRatio,originalEvent: _originalEvent});});if (hasTooltip) {this.tooltip();}}return this;},/*** Rotate the image with a relative degree.* @param {number} degree - The rotate degree.* @returns {Viewer} this*/rotate: function rotate(degree) {this.rotateTo((this.imageData.rotate || 0) + Number(degree));return this;},/*** Rotate the image to an absolute degree.* @param {number} degree - The rotate degree.* @returns {Viewer} this*/rotateTo: function rotateTo(degree) {var imageData = this.imageData;degree = Number(degree);if (isNumber(degree) && this.viewed && !this.played && this.options.rotatable) {imageData.rotate = degree;this.renderImage();}return this;},/*** Scale the image on the x-axis.* @param {number} scaleX - The scale ratio on the x-axis.* @returns {Viewer} this*/scaleX: function scaleX(_scaleX) {this.scale(_scaleX, this.imageData.scaleY);return this;},/*** Scale the image on the y-axis.* @param {number} scaleY - The scale ratio on the y-axis.* @returns {Viewer} this*/scaleY: function scaleY(_scaleY) {this.scale(this.imageData.scaleX, _scaleY);return this;},/*** Scale the image.* @param {number} scaleX - The scale ratio on the x-axis.* @param {number} [scaleY=scaleX] - The scale ratio on the y-axis.* @returns {Viewer} this*/scale: function scale(scaleX) {var scaleY = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : scaleX;var imageData = this.imageData;scaleX = Number(scaleX);scaleY = Number(scaleY);if (this.viewed && !this.played && this.options.scalable) {var changed = false;if (isNumber(scaleX)) {imageData.scaleX = scaleX;changed = true;}if (isNumber(scaleY)) {imageData.scaleY = scaleY;changed = true;}if (changed) {this.renderImage();}}return this;},/*** Play the images* @param {boolean} [fullscreen=false] - Indicate if request fullscreen or not.* @returns {Viewer} this*/play: function play() {var _this3 = this;var fullscreen = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;if (!this.isShown || this.played) {return this;}var options = this.options,player = this.player;var onLoad = this.loadImage.bind(this);var list = [];var total = 0;var index = 0;this.played = true;this.onLoadWhenPlay = onLoad;if (fullscreen) {this.requestFullscreen();}addClass(player, CLASS_SHOW);forEach(this.items, function (item, i) {var img = item.querySelector('img');var image = document.createElement('img');image.src = getData(img, 'originalUrl');image.alt = img.getAttribute('alt');total += 1;addClass(image, CLASS_FADE);toggleClass(image, CLASS_TRANSITION, options.transition);if (hasClass(item, CLASS_ACTIVE)) {addClass(image, CLASS_IN);index = i;}list.push(image);addListener(image, EVENT_LOAD, onLoad, {once: true});player.appendChild(image);});if (isNumber(options.interval) && options.interval > 0) {var play = function play() {_this3.playing = setTimeout(function () {removeClass(list[index], CLASS_IN);index += 1;index = index < total ? index : 0;addClass(list[index], CLASS_IN);play();}, options.interval);};if (total > 1) {play();}}return this;},// Stop playstop: function stop() {var _this4 = this;if (!this.played) {return this;}var player = this.player;this.played = false;clearTimeout(this.playing);forEach(player.getElementsByTagName('img'), function (image) {removeListener(image, EVENT_LOAD, _this4.onLoadWhenPlay);});removeClass(player, CLASS_SHOW);player.innerHTML = '';this.exitFullscreen();return this;},// Enter modal mode (only available in inline mode)full: function full() {var _this5 = this;var options = this.options,viewer = this.viewer,image = this.image,list = this.list;if (!this.isShown || this.played || this.fulled || !options.inline) {return this;}this.fulled = true;this.open();addClass(this.button, CLASS_FULLSCREEN_EXIT);if (options.transition) {removeClass(list, CLASS_TRANSITION);if (this.viewed) {removeClass(image, CLASS_TRANSITION);}}addClass(viewer, CLASS_FIXED);viewer.setAttribute('style', '');setStyle(viewer, {zIndex: options.zIndex});this.initContainer();this.viewerData = assign({}, this.containerData);this.renderList();if (this.viewed) {this.initImage(function () {_this5.renderImage(function () {if (options.transition) {setTimeout(function () {addClass(image, CLASS_TRANSITION);addClass(list, CLASS_TRANSITION);}, 0);}});});}return this;},// Exit modal mode (only available in inline mode)exit: function exit() {var _this6 = this;var options = this.options,viewer = this.viewer,image = this.image,list = this.list;if (!this.isShown || this.played || !this.fulled || !options.inline) {return this;}this.fulled = false;this.close();removeClass(this.button, CLASS_FULLSCREEN_EXIT);if (options.transition) {removeClass(list, CLASS_TRANSITION);if (this.viewed) {removeClass(image, CLASS_TRANSITION);}}removeClass(viewer, CLASS_FIXED);setStyle(viewer, {zIndex: options.zIndexInline});this.viewerData = assign({}, this.parentData);this.renderViewer();this.renderList();if (this.viewed) {this.initImage(function () {_this6.renderImage(function () {if (options.transition) {setTimeout(function () {addClass(image, CLASS_TRANSITION);addClass(list, CLASS_TRANSITION);}, 0);}});});}return this;},// Show the current ratio of the image with percentagetooltip: function tooltip() {var _this7 = this;var options = this.options,tooltipBox = this.tooltipBox,imageData = this.imageData;if (!this.viewed || this.played || !options.tooltip) {return this;}tooltipBox.textContent = Math.round(imageData.ratio * 100) + '%';if (!this.tooltipping) {if (options.transition) {if (this.fading) {dispatchEvent(tooltipBox, EVENT_TRANSITION_END);}addClass(tooltipBox, CLASS_SHOW);addClass(tooltipBox, CLASS_FADE);addClass(tooltipBox, CLASS_TRANSITION);// Force reflow to enable CSS3 transition// eslint-disable-next-linetooltipBox.offsetWidth;addClass(tooltipBox, CLASS_IN);} else {addClass(tooltipBox, CLASS_SHOW);}} else {clearTimeout(this.tooltipping);}this.tooltipping = setTimeout(function () {if (options.transition) {addListener(tooltipBox, EVENT_TRANSITION_END, function () {removeClass(tooltipBox, CLASS_SHOW);removeClass(tooltipBox, CLASS_FADE);removeClass(tooltipBox, CLASS_TRANSITION);_this7.fading = false;}, {once: true});removeClass(tooltipBox, CLASS_IN);_this7.fading = true;} else {removeClass(tooltipBox, CLASS_SHOW);}_this7.tooltipping = false;}, 1000);return this;},// Toggle the image size between its natural size and initial sizetoggle: function toggle() {if (this.imageData.ratio === 1) {this.zoomTo(this.initialImageData.ratio, true);} else {this.zoomTo(1, true);}return this;},// Reset the image to its initial statereset: function reset() {if (this.viewed && !this.played) {this.imageData = assign({}, this.initialImageData);this.renderImage();}return this;},// Update viewer when images changedupdate: function update() {var element = this.element,options = this.options,isImg = this.isImg;// Destroy viewer if the target image was deletedif (isImg && !element.parentNode) {return this.destroy();}var images = [];forEach(isImg ? [element] : element.querySelectorAll('img'), function (image) {if (options.filter) {if (options.filter(image)) {images.push(image);}} else {images.push(image);}});if (!images.length) {return this;}this.images = images;this.length = images.length;if (this.ready) {var indexes = [];forEach(this.items, function (item, i) {var img = item.querySelector('img');var image = images[i];if (image) {if (image.src !== img.src) {indexes.push(i);}} else {indexes.push(i);}});setStyle(this.list, {width: 'auto'});this.initList();if (this.isShown) {if (this.length) {if (this.viewed) {var index = indexes.indexOf(this.index);if (index >= 0) {this.viewed = false;this.view(Math.max(this.index - (index + 1), 0));} else {addClass(this.items[this.index], CLASS_ACTIVE);}}} else {this.image = null;this.viewed = false;this.index = 0;this.imageData = {};this.canvas.innerHTML = '';this.title.innerHTML = '';}}} else {this.build();}return this;},// Destroy the viewerdestroy: function destroy() {var element = this.element,options = this.options;if (!getData(element, NAMESPACE)) {return this;}this.destroyed = true;if (this.ready) {if (this.played) {this.stop();}if (options.inline) {if (this.fulled) {this.exit();}this.unbind();} else if (this.isShown) {if (this.viewing) {if (this.imageRendering) {this.imageRendering.abort();} else if (this.imageInitializing) {this.imageInitializing.abort();}}if (this.hiding) {this.transitioning.abort();}this.hidden();} else if (this.showing) {this.transitioning.abort();this.hidden();}this.ready = false;this.viewer.parentNode.removeChild(this.viewer);} else if (options.inline) {if (this.delaying) {this.delaying.abort();} else if (this.initializing) {this.initializing.abort();}}if (!options.inline) {removeListener(element, EVENT_CLICK, this.onStart);}removeData(element, NAMESPACE);return this;}};var others = {open: function open() {var body = this.body;addClass(body, CLASS_OPEN);body.style.paddingRight = this.scrollbarWidth + (parseFloat(this.initialBodyPaddingRight) || 0) + 'px';},close: function close() {var body = this.body;removeClass(body, CLASS_OPEN);body.style.paddingRight = this.initialBodyPaddingRight;},shown: function shown() {var element = this.element,options = this.options;this.fulled = true;this.isShown = true;this.render();this.bind();this.showing = false;if (isFunction(options.shown)) {addListener(element, EVENT_SHOWN, options.shown, {once: true});}if (dispatchEvent(element, EVENT_SHOWN) === false) {return;}if (this.ready && this.isShown && !this.hiding) {this.view(this.index);}},hidden: function hidden() {var element = this.element,options = this.options;this.fulled = false;this.viewed = false;this.isShown = false;this.close();this.unbind();addClass(this.viewer, CLASS_HIDE);this.resetList();this.resetImage();this.hiding = false;if (!this.destroyed) {if (isFunction(options.hidden)) {addListener(element, EVENT_HIDDEN, options.hidden, {once: true});}dispatchEvent(element, EVENT_HIDDEN);}},requestFullscreen: function requestFullscreen() {var document = this.element.ownerDocument;if (this.fulled && !document.fullscreenElement && !document.mozFullScreenElement && !document.webkitFullscreenElement && !document.msFullscreenElement) {var documentElement = document.documentElement;if (documentElement.requestFullscreen) {documentElement.requestFullscreen();} else if (documentElement.msRequestFullscreen) {documentElement.msRequestFullscreen();} else if (documentElement.mozRequestFullScreen) {documentElement.mozRequestFullScreen();} else if (documentElement.webkitRequestFullscreen) {documentElement.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);}}},exitFullscreen: function exitFullscreen() {if (this.fulled) {var document = this.element.ownerDocument;if (document.exitFullscreen) {document.exitFullscreen();} else if (document.msExitFullscreen) {document.msExitFullscreen();} else if (document.mozCancelFullScreen) {document.mozCancelFullScreen();} else if (document.webkitExitFullscreen) {document.webkitExitFullscreen();}}},change: function change(e) {var options = this.options,pointers = this.pointers;var pointer = pointers[Object.keys(pointers)[0]];var offsetX = pointer.endX - pointer.startX;var offsetY = pointer.endY - pointer.startY;switch (this.action) {// Move the current imagecase ACTION_MOVE:this.move(offsetX, offsetY);break;// Zoom the current imagecase ACTION_ZOOM:this.zoom(getMaxZoomRatio(pointers), false, e);break;case ACTION_SWITCH:{this.action = 'switched';var absoluteOffsetX = Math.abs(offsetX);if (absoluteOffsetX > 1 && absoluteOffsetX > Math.abs(offsetY)) {// Empty `pointers` as `touchend` event will not be fired after swiped in iOS browsers.this.pointers = {};if (offsetX > 1) {this.prev(options.loop);} else if (offsetX < -1) {this.next(options.loop);}}break;}default:}// OverrideforEach(pointers, function (p) {p.startX = p.endX;p.startY = p.endY;});},isSwitchable: function isSwitchable() {var imageData = this.imageData,viewerData = this.viewerData;return this.length > 1 && imageData.left >= 0 && imageData.top >= 0 && imageData.width <= viewerData.width && imageData.height <= viewerData.height;}};var AnotherViewer = WINDOW.Viewer;var Viewer = function () {/*** Create a new Viewer.* @param {Element} element - The target element for viewing.* @param {Object} [options={}] - The configuration options.*/function Viewer(element) {var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};classCallCheck(this, Viewer);if (!element || element.nodeType !== 1) {throw new Error('The first argument is required and must be an element.');}this.element = element;this.options = assign({}, DEFAULTS, isPlainObject(options) && options);this.action = false;this.fading = false;this.fulled = false;this.hiding = false;this.imageData = {};this.index = this.options.initialViewIndex;this.isImg = false;this.isShown = false;this.length = 0;this.played = false;this.playing = false;this.pointers = {};this.ready = false;this.showing = false;this.timeout = false;this.tooltipping = false;this.viewed = false;this.viewing = false;this.wheeling = false;this.zooming = false;this.init();}createClass(Viewer, [{key: 'init',value: function init() {var _this = this;var element = this.element,options = this.options;if (getData(element, NAMESPACE)) {return;}setData(element, NAMESPACE, this);var isImg = element.tagName.toLowerCase() === 'img';var images = [];forEach(isImg ? [element] : element.querySelectorAll('img'), function (image) {if (isFunction(options.filter)) {if (options.filter.call(_this, image)) {images.push(image);}} else {images.push(image);}});if (!images.length) {return;}this.isImg = isImg;this.length = images.length;this.images = images;var ownerDocument = element.ownerDocument;var body = ownerDocument.body || ownerDocument.documentElement;this.body = body;this.scrollbarWidth = window.innerWidth - ownerDocument.documentElement.clientWidth;this.initialBodyPaddingRight = window.getComputedStyle(body).paddingRight;// Override `transition` option if it is not supportedif (isUndefined(document.createElement(NAMESPACE).style.transition)) {options.transition = false;}if (options.inline) {var count = 0;var progress = function progress() {count += 1;if (count === _this.length) {var timeout = void 0;_this.initializing = false;_this.delaying = {abort: function abort() {clearTimeout(timeout);}};// build asynchronously to keep `this.viewer` is accessible in `ready` event handler.timeout = setTimeout(function () {_this.delaying = false;_this.build();}, 0);}};this.initializing = {abort: function abort() {forEach(images, function (image) {if (!image.complete) {removeListener(image, EVENT_LOAD, progress);}});}};forEach(images, function (image) {if (image.complete) {progress();} else {addListener(image, EVENT_LOAD, progress, {once: true});}});} else {addListener(element, EVENT_CLICK, this.onStart = function (_ref) {var target = _ref.target;if (target.tagName.toLowerCase() === 'img') {_this.view(_this.images.indexOf(target));}});}}}, {key: 'build',value: function build() {if (this.ready) {return;}var element = this.element,options = this.options;var parent = element.parentNode;var template = document.createElement('div');template.innerHTML = TEMPLATE;var viewer = template.querySelector('.' + NAMESPACE + '-container');var title = viewer.querySelector('.' + NAMESPACE + '-title');var toolbar = viewer.querySelector('.' + NAMESPACE + '-toolbar');var navbar = viewer.querySelector('.' + NAMESPACE + '-navbar');var button = viewer.querySelector('.' + NAMESPACE + '-button');var canvas = viewer.querySelector('.' + NAMESPACE + '-canvas');this.parent = parent;this.viewer = viewer;this.title = title;this.toolbar = toolbar;this.navbar = navbar;this.button = button;this.canvas = canvas;this.footer = viewer.querySelector('.' + NAMESPACE + '-footer');this.tooltipBox = viewer.querySelector('.' + NAMESPACE + '-tooltip');this.player = viewer.querySelector('.' + NAMESPACE + '-player');this.list = viewer.querySelector('.' + NAMESPACE + '-list');addClass(title, !options.title ? CLASS_HIDE : getResponsiveClass(Array.isArray(options.title) ? options.title[0] : options.title));addClass(navbar, !options.navbar ? CLASS_HIDE : getResponsiveClass(options.navbar));toggleClass(button, CLASS_HIDE, !options.button);if (options.backdrop) {addClass(viewer, NAMESPACE + '-backdrop');if (!options.inline && options.backdrop === true) {setData(canvas, DATA_ACTION, 'hide');}}if (options.toolbar) {var list = document.createElement('ul');var custom = isPlainObject(options.toolbar);var zoomButtons = BUTTONS.slice(0, 3);var rotateButtons = BUTTONS.slice(7, 9);var scaleButtons = BUTTONS.slice(9);if (!custom) {addClass(toolbar, getResponsiveClass(options.toolbar));}forEach(custom ? options.toolbar : BUTTONS, function (value, index) {var deep = custom && isPlainObject(value);var name = custom ? hyphenate(index) : value;var show = deep && !isUndefined(value.show) ? value.show : value;if (!show || !options.zoomable && zoomButtons.indexOf(name) !== -1 || !options.rotatable && rotateButtons.indexOf(name) !== -1 || !options.scalable && scaleButtons.indexOf(name) !== -1) {return;}var size = deep && !isUndefined(value.size) ? value.size : value;var click = deep && !isUndefined(value.click) ? value.click : value;var item = document.createElement('li');item.setAttribute('role', 'button');addClass(item, NAMESPACE + '-' + name);if (!isFunction(click)) {setData(item, DATA_ACTION, name);}if (isNumber(show)) {addClass(item, getResponsiveClass(show));}if (['small', 'large'].indexOf(size) !== -1) {addClass(item, NAMESPACE + '-' + size);} else if (name === 'play') {addClass(item, NAMESPACE + '-large');}if (isFunction(click)) {addListener(item, EVENT_CLICK, click);}list.appendChild(item);});toolbar.appendChild(list);} else {addClass(toolbar, CLASS_HIDE);}if (!options.rotatable) {var rotates = toolbar.querySelectorAll('li[class*="rotate"]');addClass(rotates, CLASS_INVISIBLE);forEach(rotates, function (rotate) {toolbar.appendChild(rotate);});}if (options.inline) {addClass(button, CLASS_FULLSCREEN);setStyle(viewer, {zIndex: options.zIndexInline});if (window.getComputedStyle(parent).position === 'static') {setStyle(parent, {position: 'relative'});}parent.insertBefore(viewer, element.nextSibling);} else {addClass(button, CLASS_CLOSE);addClass(viewer, CLASS_FIXED);addClass(viewer, CLASS_FADE);addClass(viewer, CLASS_HIDE);setStyle(viewer, {zIndex: options.zIndex});var container = options.container;if (isString(container)) {container = element.ownerDocument.querySelector(container);}if (!container) {container = this.body;}container.appendChild(viewer);}if (options.inline) {this.render();this.bind();this.isShown = true;}this.ready = true;if (isFunction(options.ready)) {addListener(element, EVENT_READY, options.ready, {once: true});}if (dispatchEvent(element, EVENT_READY) === false) {this.ready = false;return;}if (this.ready && options.inline) {this.view(this.index);}}/*** Get the no conflict viewer class.* @returns {Viewer} The viewer class.*/}], [{key: 'noConflict',value: function noConflict() {window.Viewer = AnotherViewer;return Viewer;}/*** Change the default options.* @param {Object} options - The new default options.*/}, {key: 'setDefaults',value: function setDefaults(options) {assign(DEFAULTS, isPlainObject(options) && options);}}]);return Viewer;}();assign(Viewer.prototype, render, events, handlers, methods, others);return Viewer;})));

viewer.ccs

/*!* Viewer.js v1.2.0* https://fengyuanchen.github.io/viewerjs** Copyright 2015-present Chen Fengyuan* Released under the MIT license** Date: 2018-07-15T10:09:17.532Z*/.viewer-zoom-in::before,
.viewer-zoom-out::before,
.viewer-one-to-one::before,
.viewer-reset::before,
.viewer-prev::before,
.viewer-play::before,
.viewer-next::before,
.viewer-rotate-left::before,
.viewer-rotate-right::before,
.viewer-flip-horizontal::before,
.viewer-flip-vertical::before,
.viewer-fullscreen::before,
.viewer-fullscreen-exit::before,
.viewer-close::before {background-image: url('data:image/png;base64,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');background-repeat: no-repeat;color: transparent;display: block;font-size: 0;height: 20px;line-height: 0;width: 20px;
}.viewer-zoom-in::before {background-position: 0 0;content: 'Zoom In';
}.viewer-zoom-out::before {background-position: -20px 0;content: 'Zoom Out';
}.viewer-one-to-one::before {background-position: -40px 0;content: 'One to One';
}.viewer-reset::before {background-position: -60px 0;content: 'Reset';
}.viewer-prev::before {background-position: -80px 0;content: 'Previous';
}.viewer-play::before {background-position: -100px 0;content: 'Play';
}.viewer-next::before {background-position: -120px 0;content: 'Next';
}.viewer-rotate-left::before {background-position: -140px 0;content: 'Rotate Left';
}.viewer-rotate-right::before {background-position: -160px 0;content: 'Rotate Right';
}.viewer-flip-horizontal::before {background-position: -180px 0;content: 'Flip Horizontal';
}.viewer-flip-vertical::before {background-position: -200px 0;content: 'Flip Vertical';
}.viewer-fullscreen::before {background-position: -220px 0;content: 'Enter Full Screen';
}.viewer-fullscreen-exit::before {background-position: -240px 0;content: 'Exit Full Screen';
}.viewer-close::before {background-position: -260px 0;content: 'Close';
}.viewer-container {bottom: 0;direction: ltr;font-size: 0;left: 0;line-height: 0;overflow: hidden;position: absolute;right: 0;-webkit-tap-highlight-color: transparent;top: 0;-webkit-touch-callout: none;-ms-touch-action: none;touch-action: none;-webkit-user-select: none;-moz-user-select: none;-ms-user-select: none;user-select: none;
}.viewer-container::-moz-selection,
.viewer-container *::-moz-selection {background-color: transparent;
}.viewer-container::selection,
.viewer-container *::selection {background-color: transparent;
}.viewer-container img {display: block;height: auto;max-height: none !important;max-width: none !important;min-height: 0 !important;min-width: 0 !important;width: 100%;
}.viewer-canvas {bottom: 0;left: 0;overflow: hidden;position: absolute;right: 0;top: 0;
}.viewer-canvas > img {height: auto;margin: 15px auto;max-width: 90% !important;width: auto;
}.viewer-footer {bottom: 0;left: 0;overflow: hidden;position: absolute;right: 0;text-align: center;
}.viewer-navbar {background-color: rgba(0, 0, 0, .5);overflow: hidden;
}.viewer-list {-webkit-box-sizing: content-box;box-sizing: content-box;height: 50px;margin: 0;overflow: hidden;padding: 1px 0;
}.viewer-list > li {color: transparent;cursor: pointer;float: left;font-size: 0;height: 50px;line-height: 0;opacity: .5;overflow: hidden;-webkit-transition: opacity .15s;transition: opacity .15s;width: 30px;
}.viewer-list > li:hover {opacity: .75;
}.viewer-list > li + li {margin-left: 1px;
}.viewer-list > .viewer-loading {position: relative;
}.viewer-list > .viewer-loading::after {border-width: 2px;height: 20px;margin-left: -10px;margin-top: -10px;width: 20px;
}.viewer-list > .viewer-active,
.viewer-list > .viewer-active:hover {opacity: 1;
}.viewer-player {background-color: #000;bottom: 0;cursor: none;display: none;left: 0;position: absolute;right: 0;top: 0;
}.viewer-player > img {left: 0;position: absolute;top: 0;
}.viewer-toolbar > ul {display: inline-block;margin: 0 auto 5px;overflow: hidden;padding: 3px 0;
}.viewer-toolbar > ul > li {background-color: rgba(0, 0, 0, .5);border-radius: 50%;cursor: pointer;float: left;height: 24px;overflow: hidden;-webkit-transition: background-color .15s;transition: background-color .15s;width: 24px;
}.viewer-toolbar > ul > li:hover {background-color: rgba(0, 0, 0, .8);
}.viewer-toolbar > ul > li::before {margin: 2px;
}.viewer-toolbar > ul > li + li {margin-left: 1px;
}.viewer-toolbar > ul > .viewer-small {height: 18px;margin-bottom: 3px;margin-top: 3px;width: 18px;
}.viewer-toolbar > ul > .viewer-small::before {margin: -1px;
}.viewer-toolbar > ul > .viewer-large {height: 30px;margin-bottom: -3px;margin-top: -3px;width: 30px;
}.viewer-toolbar > ul > .viewer-large::before {margin: 5px;
}.viewer-tooltip {background-color: rgba(0, 0, 0, 0.8);border-radius: 10px;color: #fff;display: none;font-size: 12px;height: 20px;left: 50%;line-height: 20px;margin-left: -25px;margin-top: -10px;position: absolute;text-align: center;top: 50%;width: 50px;
}.viewer-title {color: #ccc;display: inline-block;font-size: 12px;line-height: 1;margin: 0 5% 5px;max-width: 90%;opacity: .8;overflow: hidden;text-overflow: ellipsis;-webkit-transition: opacity .15s;transition: opacity .15s;white-space: nowrap;
}.viewer-title:hover {opacity: 1;
}.viewer-button {background-color: rgba(0, 0, 0, .5);border-radius: 50%;cursor: pointer;height: 80px;overflow: hidden;position: absolute;right: -40px;top: -40px;-webkit-transition: background-color .15s;transition: background-color .15s;width: 80px;
}.viewer-button:focus,
.viewer-button:hover {background-color: rgba(0, 0, 0, .8);
}.viewer-button::before {bottom: 15px;left: 15px;position: absolute;
}.viewer-fixed {position: fixed;
}.viewer-open {overflow: hidden;
}.viewer-show {display: block;
}.viewer-hide {display: none;
}.viewer-backdrop {background-color: rgba(0, 0, 0, .5);
}.viewer-invisible {visibility: hidden;
}.viewer-move {cursor: move;cursor: -webkit-grab;cursor: grab;
}.viewer-fade {opacity: 0;
}.viewer-in {opacity: 1;
}.viewer-transition {-webkit-transition: all .3s;transition: all .3s;
}@-webkit-keyframes viewer-spinner {0% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}100% {-webkit-transform: rotate(360deg);transform: rotate(360deg);}
}@keyframes viewer-spinner {0% {-webkit-transform: rotate(0deg);transform: rotate(0deg);}100% {-webkit-transform: rotate(360deg);transform: rotate(360deg);}
}.viewer-loading::after {-webkit-animation: viewer-spinner 1s linear infinite;animation: viewer-spinner 1s linear infinite;border: 4px solid rgba(255, 255, 255, .1);border-left-color: rgba(255, 255, 255, .5);border-radius: 50%;content: '';display: inline-block;height: 40px;left: 50%;margin-left: -20px;margin-top: -20px;position: absolute;top: 50%;width: 40px;z-index: 1;
}@media (max-width: 767px) {.viewer-hide-xs-down {display: none;}
}@media (max-width: 991px) {.viewer-hide-sm-down {display: none;}
}@media (max-width: 1199px) {.viewer-hide-md-down {display: none;}
}

jquery-viewer.min.js

/*!* jQuery Viewer v1.0.0* https://github.com/fengyuanchen/jquery-viewer** Copyright (c) 2018 Chen Fengyuan* Released under the MIT license** Date: 2018-04-01T05:58:29.617Z*/
!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(require("jquery"),require("viewerjs")):"function"==typeof define&&define.amd?define(["jquery","viewerjs"],t):t(e.jQuery,e.Viewer)}(this,function(d,v){"use strict";if(d=d&&d.hasOwnProperty("default")?d.default:d,v=v&&v.hasOwnProperty("default")?v.default:v,d.fn){var e=d.fn.viewer,c="viewer";d.fn.viewer=function(o){for(var e=arguments.length,u=Array(1<e?e-1:0),t=1;t<e;t++)u[t-1]=arguments[t];var s=void 0;return this.each(function(e,t){var r=d(t),i="destroy"===o,n=r.data(c);if(!n){if(i)return;var f=d.extend({},r.data(),d.isPlainObject(o)&&o);n=new v(t,f),r.data(c,n)}if("string"==typeof o){var a=n[o];d.isFunction(a)&&((s=a.apply(n,u))===n&&(s=void 0),i&&r.removeData(c))}}),void 0!==s?s:this},d.fn.viewer.Constructor=v,d.fn.viewer.setDefaults=v.setDefaults,d.fn.viewer.noConflict=function(){return d.fn.viewer=e,this}}});