/*!
* Viewer.js v1.0.0
* https://github.com/fengyuanchen/viewerjs
*
* Copyright (c) 2015-2018 Chen Fengyuan
* Released under the MIT license
*
* Date: 2018-04-01T05:33:18.955Z
*/
(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 = {
// Enable inline mode
inline: false,
// Show the button on the top-right of the viewer
button: true,
// Show the navbar
navbar: true,
// Show the title
title: true,
// Show the toolbar
toolbar: true,
// Show the tooltip with image ratio (percentage) when zoom in or zoom out
tooltip: true,
// Enable to move the image
movable: true,
// Enable to zoom the image
zoomable: true,
// Enable to rotate the image
rotatable: true,
// Enable to scale the image
scalable: true,
// Enable CSS3 Transition for some special elements
transition: true,
// Enable to request fullscreen when play
fullscreen: true,
// The amount of time to delay between automatically cycling an image when playing.
interval: 5000,
// Enable keyboard support
keyboard: true,
// Enable a modal backdrop, specify `static` for a backdrop which doesn't close the modal on click
backdrop: true,
// Indicate if show a loading spinner when load image or not.
loading: true,
// Indicate if enable loop viewing or not.
loop: true,
// Min width of the viewer in inline mode
minWidth: 200,
// Min height of the viewer in inline mode
minHeight: 100,
// Define the ratio when zoom the image by wheeling mouse
zoomRatio: 0.1,
// Define the min ratio of the image when zoom out
minZoomRatio: 0.01,
// Define the max ratio of the image when zoom in
maxZoomRatio: 100,
// Define the CSS `z-index` value of viewer in modal mode.
zIndex: 2015,
// Define the CSS `z-index` value of viewer in inline mode.
zIndexInline: 0,
// Define where to get the original image URL for viewing
// Type: String (an image attribute) or Function (should return an image URL)
url: 'src',
// Define where to put the viewer in modal mode.
// Type: String | Element
container: 'body',
// Filter the images for viewing.
// Type: Function (return true if the image is viewable)
filter: null,
// Event shortcuts
ready: null,
show: null,
shown: null,
hide: null,
hidden: null,
view: null,
viewed: 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-action="mix"></div>' + '<div class="viewer-player"></div>' + '</div>';
var IN_BROWSER = typeof window !== 'undefined';
var WINDOW = IN_BROWSER ? window : {};
var NAMESPACE = 'viewer';
// Actions
var ACTION_MOVE = 'move';
var ACTION_SWITCH = 'switch';
var ACTION_ZOOM = 'zoom';
// Classes
var 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';
// 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_CLICK = 'click';
var EVENT_DRAG_START = 'dragstart';
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_RESIZE = 'resize';
var EVENT_TRANSITION_END = 'transitionend';
var EVENT_WHEEL = 'wheel mousewheel DOMMouseScroll';
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];
} else 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 property
try {
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 constructors
if (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 transform
if (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 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 = 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-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 screen
setStyle(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.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 viewed
if (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 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));
addListener(this.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 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);
removeListener(this.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, '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();
}
}
},
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) {
// Escape
case 27:
if (this.played) {
this.stop();
} else if (options.inline) {
if (this.fulled) {
this.exit();
}
} else {
this.hide();
}
break;
// Space
case 32:
if (this.played) {
this.stop();
}
break;
// ArrowLeft
case 37:
this.prev(options.loop);
break;
// ArrowUp
case 38:
// Prevent scroll on Firefox
e.preventDefault();
// Zoom in
this.zoom(options.zoomRatio, true);
break;
// ArrowRight
case 39:
this.next(options.loop);
break;
// ArrowDown
case 40:
// Prevent scroll on Firefox
e.preventDefault();
// Zoom out
this.zoom(-options.zoomRatio, true);
break;
// Ctrl + 0
case 48:
// Fall through
// Ctrl + 1
// eslint-disable-next-line no-fallthrough
case 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;
}
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;
}
this.action = action;
},
pointermove: function pointermove(e) {
var options = this.options,
pointers = this.pointers,
action = this.action,
image = this.image;
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));
}
if (action === ACTION_MOVE && options.transition && hasClass(image, CLASS_TRANSITION)) {
removeClass(image, CLASS_TRANSITION);
}
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;
}
if (action === ACTION_MOVE && this.options.transition) {
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 fast
if (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-line
viewer.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] : 0;
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 item
this.renderList();
// Clear title
title.innerHTML = '';
// Generate title after viewed
var onViewed = function onViewed() {
var imageData = _this.imageData;
title.textContent = 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 1s
this.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 _originalEvent = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;
var _zoomable = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;
var 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;
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 event
imageData.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 image
imageData.left -= (newWidth - imageData.width) / 2;
imageData.top -= (newHeight - imageData.height) / 2;
}
imageData.width = newWidth;
imageData.height = newHeight;
imageData.ratio = ratio;
this.renderImage();
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 _this2 = 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() {
_this2.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 play
stop: function stop() {
var _this3 = 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, _this3.onLoadWhenPlay);
});
removeClass(player, CLASS_SHOW);
player.innerHTML = '';
this.exitFullscreen();
return this;
},
// Enter modal mode (only available in inline mode)
full: function full() {
var _this4 = 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 () {
_this4.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 _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 = 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 () {
_this5.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 percentage
tooltip: function tooltip() {
var _this6 = 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-line
tooltipBox.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);
_this6.fading = false;
}, {
once: true
});
removeClass(tooltipBox, CLASS_IN);
_this6.fading = true;
} else {
removeClass(tooltipBox, CLASS_SHOW);
}
_this6.tooltipping = false;
}, 1000);
return this;
},
// Toggle the image size between its natural size and initial size
toggle: 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 state
reset: function reset() {
if (this.viewed && !this.played) {
this.imageData = assign({}, this.initialImageData);
this.renderImage();
}
return this;
},
// Update viewer when images changed
update: function update() {
var element = this.element,
options = this.options,
isImg = this.isImg;
// Destroy viewer if the target image was deleted
if (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 = null;
this.canvas.innerHTML = '';
this.title.innerHTML = '';
}
}
} else {
this.build();
}
return this;
},
// Destroy the viewer
destroy: 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 image
case ACTION_MOVE:
this.move(offsetX, offsetY);
break;
// Zoom the current image
case ACTION_ZOOM:
this.zoom(getMaxZoomRatio(pointers), false, e);
break;
case ACTION_SWITCH:
this.action = 'switched';
// Empty `pointers` as `touchend` event will not be fired after swiped in iOS browsers.
this.pointers = {};
if (Math.abs(offsetX) > Math.abs(offsetY)) {
if (offsetX > 1) {
this.prev(options.loop);
} else if (offsetX < -1) {
this.next(options.loop);
}
}
break;
default:
}
// Override
forEach(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.index = 0;
this.isImg = 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.isShown = false;
this.wheeling = 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 supported
if (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(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, '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, '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();
}
}
/**
* 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;
})));
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