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viewer.esm.js
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/*!
* Viewer.js v1.11.3
* https://fengyuanchen.github.io/viewerjs
*
* Copyright 2015-present Chen Fengyuan
* Released under the MIT license
*
* Date: 2023-03-05T07:01:17.741Z
*/
function ownKeys(object, enumerableOnly) {
var keys = Object.keys(object);
if (Object.getOwnPropertySymbols) {
var symbols = Object.getOwnPropertySymbols(object);
enumerableOnly && (symbols = symbols.filter(function (sym) {
return Object.getOwnPropertyDescriptor(object, sym).enumerable;
})), keys.push.apply(keys, symbols);
}
return keys;
}
function _objectSpread2(target) {
for (var i = 1; i < arguments.length; i++) {
var source = null != arguments[i] ? arguments[i] : {};
i % 2 ? ownKeys(Object(source), !0).forEach(function (key) {
_defineProperty(target, key, source[key]);
}) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) {
Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key));
});
}
return target;
}
function _typeof(obj) {
"@babel/helpers - typeof";
return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) {
return typeof obj;
} : function (obj) {
return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
}, _typeof(obj);
}
function _classCallCheck(instance, Constructor) {
if (!(instance instanceof Constructor)) {
throw new TypeError("Cannot call a class as a 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, _toPropertyKey(descriptor.key), descriptor);
}
}
function _createClass(Constructor, protoProps, staticProps) {
if (protoProps) _defineProperties(Constructor.prototype, protoProps);
if (staticProps) _defineProperties(Constructor, staticProps);
Object.defineProperty(Constructor, "prototype", {
writable: false
});
return Constructor;
}
function _defineProperty(obj, key, value) {
key = _toPropertyKey(key);
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
function _toPrimitive(input, hint) {
if (typeof input !== "object" || input === null) return input;
var prim = input[Symbol.toPrimitive];
if (prim !== undefined) {
var res = prim.call(input, hint || "default");
if (typeof res !== "object") return res;
throw new TypeError("@@toPrimitive must return a primitive value.");
}
return (hint === "string" ? String : Number)(input);
}
function _toPropertyKey(arg) {
var key = _toPrimitive(arg, "string");
return typeof key === "symbol" ? key : String(key);
}
var DEFAULTS = {
/**
* Enable a modal backdrop, specify `static` for a backdrop
* which doesn't close the modal on click.
* @type {boolean}
*/
backdrop: true,
/**
* 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: true,
/**
* Show the toolbar.
* @type {boolean | number | Object}
*/
toolbar: true,
/**
* Custom class name(s) to add to the viewer's root element.
* @type {string}
*/
className: '',
/**
* 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,
/**
* Enable to request fullscreen when play.
* {@link https://developer.mozilla.org/en-US/docs/Web/API/FullscreenOptions}
* @type {boolean|FullscreenOptions}
*/
fullscreen: true,
/**
* Define the extra attributes to inherit from the original image.
* @type {Array}
*/
inheritedAttributes: ['crossOrigin', 'decoding', 'isMap', 'loading', 'referrerPolicy', 'sizes', 'srcset', 'useMap'],
/**
* Define the initial coverage of the viewing image.
* @type {number}
*/
initialCoverage: 0.9,
/**
* Define the initial index of the image for viewing.
* @type {number}
*/
initialViewIndex: 0,
/**
* Enable inline mode.
* @type {boolean}
*/
inline: false,
/**
* The amount of time to delay between automatically cycling an image when playing.
* @type {number}
*/
interval: 5000,
/**
* Enable keyboard support.
* @type {boolean}
*/
keyboard: true,
/**
* Focus the viewer when initialized.
* @type {boolean}
*/
focus: 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,
/**
* Enable to move the image.
* @type {boolean}
*/
movable: true,
/**
* Enable to rotate the image.
* @type {boolean}
*/
rotatable: true,
/**
* Enable to scale the image.
* @type {boolean}
*/
scalable: true,
/**
* Enable to zoom the image.
* @type {boolean}
*/
zoomable: true,
/**
* Enable to zoom the current image by dragging on the touch screen.
* @type {boolean}
*/
zoomOnTouch: true,
/**
* Enable to zoom the image by wheeling mouse.
* @type {boolean}
*/
zoomOnWheel: true,
/**
* Enable to slide to the next or previous image by swiping on the touch screen.
* @type {boolean}
*/
slideOnTouch: true,
/**
* 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,
/**
* Show the tooltip with image ratio (percentage) when zoom in or zoom out.
* @type {boolean}
*/
tooltip: true,
/**
* Enable CSS3 Transition for some special elements.
* @type {boolean}
*/
transition: true,
/**
* Define the CSS `z-index` value of viewer in modal mode.
* @type {number}
*/
zIndex: 2015,
/**
* Define the CSS `z-index` value of viewer in inline mode.
* @type {number}
*/
zIndexInline: 0,
/**
* 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 where to get the original image URL for viewing.
* @type {string | Function}
*/
url: 'src',
/**
* Event shortcuts.
* @type {Function}
*/
ready: null,
show: null,
shown: null,
hide: null,
hidden: null,
view: null,
viewed: null,
move: null,
moved: null,
rotate: null,
rotated: null,
scale: null,
scaled: null,
zoom: null,
zoomed: null,
play: null,
stop: null
};
var TEMPLATE = '<div class="viewer-container" tabindex="-1" 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" role="navigation"></ul>' + '</div>' + '</div>' + '<div class="viewer-tooltip" role="alert" aria-hidden="true"></div>' + '<div class="viewer-button" data-viewer-action="mix" role="button"></div>' + '<div class="viewer-player"></div>' + '</div>';
var IS_BROWSER = typeof window !== 'undefined' && typeof window.document !== 'undefined';
var WINDOW = IS_BROWSER ? window : {};
var IS_TOUCH_DEVICE = IS_BROWSER && WINDOW.document.documentElement ? 'ontouchstart' in WINDOW.document.documentElement : false;
var HAS_POINTER_EVENT = IS_BROWSER ? 'PointerEvent' in WINDOW : false;
var NAMESPACE = 'viewer';
// Actions
var ACTION_MOVE = 'move';
var ACTION_SWITCH = 'switch';
var ACTION_ZOOM = 'zoom';
// Classes
var CLASS_ACTIVE = "".concat(NAMESPACE, "-active");
var CLASS_CLOSE = "".concat(NAMESPACE, "-close");
var CLASS_FADE = "".concat(NAMESPACE, "-fade");
var CLASS_FIXED = "".concat(NAMESPACE, "-fixed");
var CLASS_FULLSCREEN = "".concat(NAMESPACE, "-fullscreen");
var CLASS_FULLSCREEN_EXIT = "".concat(NAMESPACE, "-fullscreen-exit");
var CLASS_HIDE = "".concat(NAMESPACE, "-hide");
var CLASS_HIDE_MD_DOWN = "".concat(NAMESPACE, "-hide-md-down");
var CLASS_HIDE_SM_DOWN = "".concat(NAMESPACE, "-hide-sm-down");
var CLASS_HIDE_XS_DOWN = "".concat(NAMESPACE, "-hide-xs-down");
var CLASS_IN = "".concat(NAMESPACE, "-in");
var CLASS_INVISIBLE = "".concat(NAMESPACE, "-invisible");
var CLASS_LOADING = "".concat(NAMESPACE, "-loading");
var CLASS_MOVE = "".concat(NAMESPACE, "-move");
var CLASS_OPEN = "".concat(NAMESPACE, "-open");
var CLASS_SHOW = "".concat(NAMESPACE, "-show");
var CLASS_TRANSITION = "".concat(NAMESPACE, "-transition");
// Native events
var EVENT_CLICK = 'click';
var EVENT_DBLCLICK = 'dblclick';
var EVENT_DRAG_START = 'dragstart';
var EVENT_FOCUSIN = 'focusin';
var EVENT_KEY_DOWN = 'keydown';
var EVENT_LOAD = 'load';
var EVENT_ERROR = 'error';
var EVENT_TOUCH_END = IS_TOUCH_DEVICE ? 'touchend touchcancel' : 'mouseup';
var EVENT_TOUCH_MOVE = IS_TOUCH_DEVICE ? 'touchmove' : 'mousemove';
var EVENT_TOUCH_START = IS_TOUCH_DEVICE ? 'touchstart' : 'mousedown';
var EVENT_POINTER_DOWN = HAS_POINTER_EVENT ? 'pointerdown' : EVENT_TOUCH_START;
var EVENT_POINTER_MOVE = HAS_POINTER_EVENT ? 'pointermove' : EVENT_TOUCH_MOVE;
var EVENT_POINTER_UP = HAS_POINTER_EVENT ? 'pointerup pointercancel' : EVENT_TOUCH_END;
var EVENT_RESIZE = 'resize';
var EVENT_TRANSITION_END = 'transitionend';
var EVENT_WHEEL = 'wheel';
// Custom events
var EVENT_READY = 'ready';
var EVENT_SHOW = 'show';
var EVENT_SHOWN = 'shown';
var EVENT_HIDE = 'hide';
var EVENT_HIDDEN = 'hidden';
var EVENT_VIEW = 'view';
var EVENT_VIEWED = 'viewed';
var EVENT_MOVE = 'move';
var EVENT_MOVED = 'moved';
var EVENT_ROTATE = 'rotate';
var EVENT_ROTATED = 'rotated';
var EVENT_SCALE = 'scale';
var EVENT_SCALED = 'scaled';
var EVENT_ZOOM = 'zoom';
var EVENT_ZOOMED = 'zoomed';
var EVENT_PLAY = 'play';
var EVENT_STOP = 'stop';
// Data keys
var DATA_ACTION = "".concat(NAMESPACE, "Action");
// RegExps
var REGEXP_SPACES = /\s\s*/;
// Misc
var BUTTONS = ['zoom-in', 'zoom-out', 'one-to-one', 'reset', 'prev', 'play', 'next', 'rotate-left', 'rotate-right', 'flip-horizontal', 'flip-vertical'];
/**
* 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) === '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 (error) {
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;
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 = new 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;
});
}
/**
* Escape a string for using in HTML.
* @param {String} value - The string to escape.
* @returns {String} Returns the escaped string.
*/
function escapeHTMLEntities(value) {
return isString(value) ? value.replace(/&(?!amp;|quot;|#39;|lt;|gt;)/g, '&').replace(/"/g, '"').replace(/'/g, ''').replace(/</g, '<').replace(/>/g, '>') : 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) {
if (!element || !value) {
return false;
}
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 (!element || !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 = "".concat(className, " ").concat(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 (!element || !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-".concat(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-".concat(hyphenate(name)), data);
}
}
var onceSupported = function () {
var supported = false;
if (IS_BROWSER) {
var once = false;
var listener = function listener() {};
var options = Object.defineProperty({}, 'once', {
get: function get() {
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(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$listeners === void 0 ? {} : _element$listeners;
_handler = function handler() {
delete listeners[event][listener];
element.removeEventListener(event, _handler, options);
for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
args[_key2] = arguments[_key2];
}
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.
* @param {Object} options - The additional event options.
* @returns {boolean} Indicate if the event is default prevented or not.
*/
function dispatchEvent(element, type, data, options) {
var event;
// Event and CustomEvent on IE9-11 are global objects, not constructors
if (isFunction(Event) && isFunction(CustomEvent)) {
event = new CustomEvent(type, _objectSpread2({
bubbles: true,
cancelable: true,
detail: data
}, options));
} 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(".concat(translateX, "px)"));
}
if (isNumber(translateY) && translateY !== 0) {
values.push("translateY(".concat(translateY, "px)"));
}
// Rotate should come first before scale to match orientation transform
if (isNumber(rotate) && rotate !== 0) {
values.push("rotate(".concat(rotate, "deg)"));
}
if (isNumber(scaleX) && scaleX !== 1) {
values.push("scaleX(".concat(scaleX, ")"));
}
if (isNumber(scaleY) && scaleY !== 1) {
values.push("scaleY(".concat(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('https://domain.com/path/to/picture.jpg?size=1280×960')
* @returns {string} A string contains the image name.
*/
function getImageNameFromURL(url) {
return isString(url) ? decodeURIComponent(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 {Object} options - The viewer options.
* @param {Function} callback - The callback function.
* @returns {HTMLImageElement} The new image.
*/
function getImageNaturalSizes(image, options, 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);
}
};
forEach(options.inheritedAttributes, function (name) {
var value = image.getAttribute(name);
if (value !== null) {
newImage.setAttribute(name, value);
}
});
newImage.src = image.src;
// iOS Safari will convert the image automatically
// with its orientation once append it into DOM
if (!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 = _objectSpread2({}, 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 : _objectSpread2({
timeStamp: Date.now(),
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();
},
initBody: function initBody() {
var ownerDocument = this.element.ownerDocument;
var body = ownerDocument.body || ownerDocument.documentElement;
this.body = body;
this.scrollbarWidth = window.innerWidth - ownerDocument.documentElement.clientWidth;
this.initialBodyPaddingRight = body.style.paddingRight;
this.initialBodyComputedPaddingRight = window.getComputedStyle(body).paddingRight;
},
initContainer: function initContainer() {
this.containerData = {
width: window.innerWidth,
height: window.innerHeight
};
},
initViewer: function initViewer() {
var options = this.options,
parent = this.parent;
var viewerData;
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 = [];