988 lines
42 KiB
JavaScript
988 lines
42 KiB
JavaScript
/*!
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* lightgallery | 2.8.2 | November 28th 2024
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* http://www.lightgalleryjs.com/
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* Copyright (c) 2020 Sachin Neravath;
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* @license GPLv3
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*/
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
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typeof define === 'function' && define.amd ? define(factory) :
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(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.lgZoom = factory());
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}(this, (function () { 'use strict';
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/*! *****************************************************************************
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Copyright (c) Microsoft Corporation.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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PERFORMANCE OF THIS SOFTWARE.
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***************************************************************************** */
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var __assign = function() {
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__assign = Object.assign || function __assign(t) {
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for (var s, i = 1, n = arguments.length; i < n; i++) {
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s = arguments[i];
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for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
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}
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return t;
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};
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return __assign.apply(this, arguments);
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};
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var zoomSettings = {
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scale: 1,
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zoom: true,
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infiniteZoom: true,
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actualSize: true,
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showZoomInOutIcons: false,
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actualSizeIcons: {
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zoomIn: 'lg-zoom-in',
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zoomOut: 'lg-zoom-out',
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},
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enableZoomAfter: 300,
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zoomPluginStrings: {
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zoomIn: 'Zoom in',
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zoomOut: 'Zoom out',
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viewActualSize: 'View actual size',
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},
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};
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/**
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* List of lightGallery events
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* All events should be documented here
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* Below interfaces are used to build the website documentations
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* */
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var lGEvents = {
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afterAppendSlide: 'lgAfterAppendSlide',
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init: 'lgInit',
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hasVideo: 'lgHasVideo',
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containerResize: 'lgContainerResize',
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updateSlides: 'lgUpdateSlides',
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afterAppendSubHtml: 'lgAfterAppendSubHtml',
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beforeOpen: 'lgBeforeOpen',
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afterOpen: 'lgAfterOpen',
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slideItemLoad: 'lgSlideItemLoad',
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beforeSlide: 'lgBeforeSlide',
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afterSlide: 'lgAfterSlide',
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posterClick: 'lgPosterClick',
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dragStart: 'lgDragStart',
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dragMove: 'lgDragMove',
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dragEnd: 'lgDragEnd',
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beforeNextSlide: 'lgBeforeNextSlide',
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beforePrevSlide: 'lgBeforePrevSlide',
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beforeClose: 'lgBeforeClose',
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afterClose: 'lgAfterClose',
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rotateLeft: 'lgRotateLeft',
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rotateRight: 'lgRotateRight',
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flipHorizontal: 'lgFlipHorizontal',
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flipVertical: 'lgFlipVertical',
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autoplay: 'lgAutoplay',
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autoplayStart: 'lgAutoplayStart',
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autoplayStop: 'lgAutoplayStop',
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};
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var ZOOM_TRANSITION_DURATION = 500;
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var Zoom = /** @class */ (function () {
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function Zoom(instance, $LG) {
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// get lightGallery core plugin instance
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this.core = instance;
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this.$LG = $LG;
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this.settings = __assign(__assign({}, zoomSettings), this.core.settings);
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return this;
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}
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// Append Zoom controls. Actual size, Zoom-in, Zoom-out
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Zoom.prototype.buildTemplates = function () {
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var zoomIcons = this.settings.showZoomInOutIcons
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? "<button id=\"" + this.core.getIdName('lg-zoom-in') + "\" type=\"button\" aria-label=\"" + this.settings.zoomPluginStrings['zoomIn'] + "\" class=\"lg-zoom-in lg-icon\"></button><button id=\"" + this.core.getIdName('lg-zoom-out') + "\" type=\"button\" aria-label=\"" + this.settings.zoomPluginStrings['zoomOut'] + "\" class=\"lg-zoom-out lg-icon\"></button>"
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: '';
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if (this.settings.actualSize) {
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zoomIcons += "<button id=\"" + this.core.getIdName('lg-actual-size') + "\" type=\"button\" aria-label=\"" + this.settings.zoomPluginStrings['viewActualSize'] + "\" class=\"" + this.settings.actualSizeIcons.zoomIn + " lg-icon\"></button>";
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}
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this.core.outer.addClass('lg-use-transition-for-zoom');
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this.core.$toolbar.first().append(zoomIcons);
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};
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/**
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* @desc Enable zoom option only once the image is completely loaded
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* If zoomFromOrigin is true, Zoom is enabled once the dummy image has been inserted
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*
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* Zoom styles are defined under lg-zoomable CSS class.
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*/
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Zoom.prototype.enableZoom = function (event) {
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var _this = this;
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// delay will be 0 except first time
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var _speed = this.settings.enableZoomAfter + event.detail.delay;
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// set _speed value 0 if gallery opened from direct url and if it is first slide
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if (this.$LG('body').first().hasClass('lg-from-hash') &&
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event.detail.delay) {
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// will execute only once
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_speed = 0;
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}
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else {
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// Remove lg-from-hash to enable starting animation.
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this.$LG('body').first().removeClass('lg-from-hash');
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}
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this.zoomableTimeout = setTimeout(function () {
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if (!_this.isImageSlide(_this.core.index)) {
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return;
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}
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_this.core.getSlideItem(event.detail.index).addClass('lg-zoomable');
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if (event.detail.index === _this.core.index) {
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_this.setZoomEssentials();
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}
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}, _speed + 30);
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};
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Zoom.prototype.enableZoomOnSlideItemLoad = function () {
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// Add zoomable class
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this.core.LGel.on(lGEvents.slideItemLoad + ".zoom", this.enableZoom.bind(this));
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};
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Zoom.prototype.getDragCords = function (e) {
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return {
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x: e.pageX,
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y: e.pageY,
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};
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};
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Zoom.prototype.getSwipeCords = function (e) {
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var x = e.touches[0].pageX;
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var y = e.touches[0].pageY;
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return {
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x: x,
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y: y,
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};
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};
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Zoom.prototype.getDragAllowedAxises = function (scale, scaleDiff) {
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if (!this.containerRect) {
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return {
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allowX: false,
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allowY: false,
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};
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}
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var $image = this.core
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.getSlideItem(this.core.index)
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.find('.lg-image')
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.first()
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.get();
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var height = 0;
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var width = 0;
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var rect = $image.getBoundingClientRect();
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if (scale) {
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height = $image.offsetHeight * scale;
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width = $image.offsetWidth * scale;
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}
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else if (scaleDiff) {
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height = rect.height + scaleDiff * rect.height;
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width = rect.width + scaleDiff * rect.width;
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}
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else {
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height = rect.height;
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width = rect.width;
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}
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var allowY = height > this.containerRect.height;
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var allowX = width > this.containerRect.width;
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return {
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allowX: allowX,
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allowY: allowY,
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};
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};
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Zoom.prototype.setZoomEssentials = function () {
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this.containerRect = this.core.$content.get().getBoundingClientRect();
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};
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/**
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* @desc Image zoom
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* Translate the wrap and scale the image to get better user experience
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*
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* @param {String} scale - Zoom decrement/increment value
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*/
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Zoom.prototype.zoomImage = function (scale, scaleDiff, reposition, resetToMax) {
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if (Math.abs(scaleDiff) <= 0)
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return;
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var offsetX = this.containerRect.width / 2 + this.containerRect.left;
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var offsetY = this.containerRect.height / 2 +
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this.containerRect.top +
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this.scrollTop;
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var originalX;
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var originalY;
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if (scale === 1) {
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this.positionChanged = false;
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}
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var dragAllowedAxises = this.getDragAllowedAxises(0, scaleDiff);
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var allowY = dragAllowedAxises.allowY, allowX = dragAllowedAxises.allowX;
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if (this.positionChanged) {
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originalX = this.left / (this.scale - scaleDiff);
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originalY = this.top / (this.scale - scaleDiff);
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this.pageX = offsetX - originalX;
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this.pageY = offsetY - originalY;
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this.positionChanged = false;
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}
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var possibleSwipeCords = this.getPossibleSwipeDragCords(scaleDiff);
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var x;
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var y;
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var _x = offsetX - this.pageX;
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var _y = offsetY - this.pageY;
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if (scale - scaleDiff > 1) {
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var scaleVal = (scale - scaleDiff) / Math.abs(scaleDiff);
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_x =
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(scaleDiff < 0 ? -_x : _x) +
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this.left * (scaleVal + (scaleDiff < 0 ? -1 : 1));
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_y =
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(scaleDiff < 0 ? -_y : _y) +
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this.top * (scaleVal + (scaleDiff < 0 ? -1 : 1));
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x = _x / scaleVal;
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y = _y / scaleVal;
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}
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else {
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var scaleVal = (scale - scaleDiff) * scaleDiff;
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x = _x * scaleVal;
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y = _y * scaleVal;
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}
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if (reposition) {
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if (allowX) {
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if (this.isBeyondPossibleLeft(x, possibleSwipeCords.minX)) {
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x = possibleSwipeCords.minX;
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}
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else if (this.isBeyondPossibleRight(x, possibleSwipeCords.maxX)) {
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x = possibleSwipeCords.maxX;
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}
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}
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else {
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if (scale > 1) {
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if (x < possibleSwipeCords.minX) {
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x = possibleSwipeCords.minX;
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}
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else if (x > possibleSwipeCords.maxX) {
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x = possibleSwipeCords.maxX;
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}
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}
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}
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// @todo fix this
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if (allowY) {
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if (this.isBeyondPossibleTop(y, possibleSwipeCords.minY)) {
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y = possibleSwipeCords.minY;
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}
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else if (this.isBeyondPossibleBottom(y, possibleSwipeCords.maxY)) {
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y = possibleSwipeCords.maxY;
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}
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}
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else {
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// If the translate value based on index of beyond the viewport, utilize the available space to prevent image being cut out
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if (scale > 1) {
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//If image goes beyond viewport top, use the minim possible translate value
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if (y < possibleSwipeCords.minY) {
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y = possibleSwipeCords.minY;
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}
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else if (y > possibleSwipeCords.maxY) {
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y = possibleSwipeCords.maxY;
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}
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}
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}
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}
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this.setZoomStyles({
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x: x,
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y: y,
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scale: scale,
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});
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this.left = x;
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this.top = y;
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if (resetToMax) {
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this.setZoomImageSize();
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}
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};
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Zoom.prototype.resetImageTranslate = function (index) {
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if (!this.isImageSlide(index)) {
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return;
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}
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var $image = this.core.getSlideItem(index).find('.lg-image').first();
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this.imageReset = false;
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$image.removeClass('reset-transition reset-transition-y reset-transition-x');
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this.core.outer.removeClass('lg-actual-size');
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$image.css('width', 'auto').css('height', 'auto');
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setTimeout(function () {
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$image.removeClass('no-transition');
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}, 10);
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};
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Zoom.prototype.setZoomImageSize = function () {
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var _this = this;
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var $image = this.core
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.getSlideItem(this.core.index)
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.find('.lg-image')
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.first();
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setTimeout(function () {
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var actualSizeScale = _this.getCurrentImageActualSizeScale();
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if (_this.scale >= actualSizeScale) {
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$image.addClass('no-transition');
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_this.imageReset = true;
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}
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}, ZOOM_TRANSITION_DURATION);
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setTimeout(function () {
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var actualSizeScale = _this.getCurrentImageActualSizeScale();
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if (_this.scale >= actualSizeScale) {
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var dragAllowedAxises = _this.getDragAllowedAxises(_this.scale);
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$image
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.css('width', $image.get().naturalWidth + 'px')
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.css('height', $image.get().naturalHeight + 'px');
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_this.core.outer.addClass('lg-actual-size');
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if (dragAllowedAxises.allowX && dragAllowedAxises.allowY) {
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$image.addClass('reset-transition');
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}
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else if (dragAllowedAxises.allowX &&
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!dragAllowedAxises.allowY) {
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$image.addClass('reset-transition-x');
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}
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else if (!dragAllowedAxises.allowX &&
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dragAllowedAxises.allowY) {
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$image.addClass('reset-transition-y');
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}
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}
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}, ZOOM_TRANSITION_DURATION + 50);
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};
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/**
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* @desc apply scale3d to image and translate to image wrap
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* @param {style} X,Y and scale
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*/
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Zoom.prototype.setZoomStyles = function (style) {
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var $imageWrap = this.core
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.getSlideItem(this.core.index)
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.find('.lg-img-wrap')
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.first();
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var $image = this.core
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.getSlideItem(this.core.index)
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.find('.lg-image')
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.first();
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var $dummyImage = this.core.outer
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.find('.lg-current .lg-dummy-img')
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.first();
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this.scale = style.scale;
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$image.css('transform', 'scale3d(' + style.scale + ', ' + style.scale + ', 1)');
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$dummyImage.css('transform', 'scale3d(' + style.scale + ', ' + style.scale + ', 1)');
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var transform = 'translate3d(' + style.x + 'px, ' + style.y + 'px, 0)';
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$imageWrap.css('transform', transform);
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};
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/**
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* @param index - Index of the current slide
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* @param event - event will be available only if the function is called on clicking/taping the imags
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*/
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Zoom.prototype.setActualSize = function (index, event) {
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var _this = this;
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if (this.zoomInProgress) {
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return;
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}
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this.zoomInProgress = true;
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var currentItem = this.core.galleryItems[this.core.index];
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this.resetImageTranslate(index);
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setTimeout(function () {
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// Allow zoom only on image
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if (!currentItem.src ||
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_this.core.outer.hasClass('lg-first-slide-loading')) {
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return;
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}
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var scale = _this.getCurrentImageActualSizeScale();
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var prevScale = _this.scale;
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if (_this.core.outer.hasClass('lg-zoomed')) {
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_this.scale = 1;
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}
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else {
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_this.scale = _this.getScale(scale);
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}
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_this.setPageCords(event);
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_this.beginZoom(_this.scale);
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_this.zoomImage(_this.scale, _this.scale - prevScale, true, true);
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}, 50);
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setTimeout(function () {
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_this.core.outer.removeClass('lg-grabbing').addClass('lg-grab');
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}, 60);
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setTimeout(function () {
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_this.zoomInProgress = false;
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}, ZOOM_TRANSITION_DURATION + 110);
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};
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Zoom.prototype.getNaturalWidth = function (index) {
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var $image = this.core.getSlideItem(index).find('.lg-image').first();
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var naturalWidth = this.core.galleryItems[index].width;
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return naturalWidth
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? parseFloat(naturalWidth)
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: $image.get().naturalWidth;
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};
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Zoom.prototype.getActualSizeScale = function (naturalWidth, width) {
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var _scale;
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var scale;
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if (naturalWidth >= width) {
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_scale = naturalWidth / width;
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scale = _scale || 2;
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}
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else {
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scale = 1;
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}
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return scale;
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};
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Zoom.prototype.getCurrentImageActualSizeScale = function () {
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var $image = this.core
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.getSlideItem(this.core.index)
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.find('.lg-image')
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.first();
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var width = $image.get().offsetWidth;
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var naturalWidth = this.getNaturalWidth(this.core.index) || width;
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return this.getActualSizeScale(naturalWidth, width);
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};
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Zoom.prototype.getPageCords = function (event) {
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var cords = {};
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if (event) {
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cords.x = event.pageX || event.touches[0].pageX;
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cords.y = event.pageY || event.touches[0].pageY;
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}
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else {
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var containerRect = this.core.$content
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.get()
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.getBoundingClientRect();
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cords.x = containerRect.width / 2 + containerRect.left;
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cords.y =
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containerRect.height / 2 + this.scrollTop + containerRect.top;
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}
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return cords;
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};
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Zoom.prototype.setPageCords = function (event) {
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var pageCords = this.getPageCords(event);
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this.pageX = pageCords.x;
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this.pageY = pageCords.y;
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};
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Zoom.prototype.manageActualPixelClassNames = function () {
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var $actualSize = this.core.getElementById('lg-actual-size');
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$actualSize
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.removeClass(this.settings.actualSizeIcons.zoomIn)
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.addClass(this.settings.actualSizeIcons.zoomOut);
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};
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// If true, zoomed - in else zoomed out
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Zoom.prototype.beginZoom = function (scale) {
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this.core.outer.removeClass('lg-zoom-drag-transition lg-zoom-dragging');
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if (scale > 1) {
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this.core.outer.addClass('lg-zoomed');
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this.manageActualPixelClassNames();
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}
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else {
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this.resetZoom();
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}
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return scale > 1;
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};
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Zoom.prototype.getScale = function (scale) {
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var actualSizeScale = this.getCurrentImageActualSizeScale();
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if (scale < 1) {
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scale = 1;
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}
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else if (scale > actualSizeScale) {
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scale = actualSizeScale;
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}
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return scale;
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};
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Zoom.prototype.init = function () {
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var _this = this;
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if (!this.settings.zoom) {
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return;
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}
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this.buildTemplates();
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this.enableZoomOnSlideItemLoad();
|
|
var tapped = null;
|
|
this.core.outer.on('dblclick.lg', function (event) {
|
|
if (!_this.$LG(event.target).hasClass('lg-image')) {
|
|
return;
|
|
}
|
|
_this.setActualSize(_this.core.index, event);
|
|
});
|
|
this.core.outer.on('touchstart.lg', function (event) {
|
|
var $target = _this.$LG(event.target);
|
|
if (event.touches.length === 1 && $target.hasClass('lg-image')) {
|
|
if (!tapped) {
|
|
tapped = setTimeout(function () {
|
|
tapped = null;
|
|
}, 300);
|
|
}
|
|
else {
|
|
clearTimeout(tapped);
|
|
tapped = null;
|
|
event.preventDefault();
|
|
_this.setActualSize(_this.core.index, event);
|
|
}
|
|
}
|
|
});
|
|
this.core.LGel.on(lGEvents.containerResize + ".zoom " + lGEvents.rotateRight + ".zoom " + lGEvents.rotateLeft + ".zoom " + lGEvents.flipHorizontal + ".zoom " + lGEvents.flipVertical + ".zoom", function () {
|
|
if (!_this.core.lgOpened ||
|
|
!_this.isImageSlide(_this.core.index) ||
|
|
_this.core.touchAction) {
|
|
return;
|
|
}
|
|
var _LGel = _this.core
|
|
.getSlideItem(_this.core.index)
|
|
.find('.lg-img-wrap')
|
|
.first();
|
|
_this.top = 0;
|
|
_this.left = 0;
|
|
_this.setZoomEssentials();
|
|
_this.setZoomSwipeStyles(_LGel, { x: 0, y: 0 });
|
|
_this.positionChanged = true;
|
|
});
|
|
// Update zoom on resize and orientationchange
|
|
this.$LG(window).on("scroll.lg.zoom.global" + this.core.lgId, function () {
|
|
if (!_this.core.lgOpened)
|
|
return;
|
|
_this.scrollTop = _this.$LG(window).scrollTop();
|
|
});
|
|
this.core.getElementById('lg-zoom-out').on('click.lg', function () {
|
|
// Allow zoom only on image
|
|
if (!_this.isImageSlide(_this.core.index)) {
|
|
return;
|
|
}
|
|
var timeout = 0;
|
|
if (_this.imageReset) {
|
|
_this.resetImageTranslate(_this.core.index);
|
|
timeout = 50;
|
|
}
|
|
setTimeout(function () {
|
|
var scale = _this.scale - _this.settings.scale;
|
|
if (scale < 1) {
|
|
scale = 1;
|
|
}
|
|
_this.beginZoom(scale);
|
|
_this.zoomImage(scale, -_this.settings.scale, true, !_this.settings.infiniteZoom);
|
|
}, timeout);
|
|
});
|
|
this.core.getElementById('lg-zoom-in').on('click.lg', function () {
|
|
_this.zoomIn();
|
|
});
|
|
this.core.getElementById('lg-actual-size').on('click.lg', function () {
|
|
_this.setActualSize(_this.core.index);
|
|
});
|
|
this.core.LGel.on(lGEvents.beforeOpen + ".zoom", function () {
|
|
_this.core.outer.find('.lg-item').removeClass('lg-zoomable');
|
|
});
|
|
this.core.LGel.on(lGEvents.afterOpen + ".zoom", function () {
|
|
_this.scrollTop = _this.$LG(window).scrollTop();
|
|
// Set the initial value center
|
|
_this.pageX = _this.core.outer.width() / 2;
|
|
_this.pageY = _this.core.outer.height() / 2 + _this.scrollTop;
|
|
_this.scale = 1;
|
|
});
|
|
// Reset zoom on slide change
|
|
this.core.LGel.on(lGEvents.afterSlide + ".zoom", function (event) {
|
|
var prevIndex = event.detail.prevIndex;
|
|
_this.scale = 1;
|
|
_this.positionChanged = false;
|
|
_this.zoomInProgress = false;
|
|
_this.resetZoom(prevIndex);
|
|
_this.resetImageTranslate(prevIndex);
|
|
if (_this.isImageSlide(_this.core.index)) {
|
|
_this.setZoomEssentials();
|
|
}
|
|
});
|
|
// Drag option after zoom
|
|
this.zoomDrag();
|
|
this.pinchZoom();
|
|
this.zoomSwipe();
|
|
// Store the zoomable timeout value just to clear it while closing
|
|
this.zoomableTimeout = false;
|
|
this.positionChanged = false;
|
|
this.zoomInProgress = false;
|
|
};
|
|
Zoom.prototype.zoomIn = function () {
|
|
// Allow zoom only on image
|
|
if (!this.isImageSlide(this.core.index)) {
|
|
return;
|
|
}
|
|
var scale = this.scale + this.settings.scale;
|
|
if (!this.settings.infiniteZoom) {
|
|
scale = this.getScale(scale);
|
|
}
|
|
this.beginZoom(scale);
|
|
this.zoomImage(scale, Math.min(this.settings.scale, scale - this.scale), true, !this.settings.infiniteZoom);
|
|
};
|
|
// Reset zoom effect
|
|
Zoom.prototype.resetZoom = function (index) {
|
|
this.core.outer.removeClass('lg-zoomed lg-zoom-drag-transition');
|
|
var $actualSize = this.core.getElementById('lg-actual-size');
|
|
var $item = this.core.getSlideItem(index !== undefined ? index : this.core.index);
|
|
$actualSize
|
|
.removeClass(this.settings.actualSizeIcons.zoomOut)
|
|
.addClass(this.settings.actualSizeIcons.zoomIn);
|
|
$item.find('.lg-img-wrap').first().removeAttr('style');
|
|
$item.find('.lg-image').first().removeAttr('style');
|
|
this.scale = 1;
|
|
this.left = 0;
|
|
this.top = 0;
|
|
// Reset pagx pagy values to center
|
|
this.setPageCords();
|
|
};
|
|
Zoom.prototype.getTouchDistance = function (e) {
|
|
return Math.sqrt((e.touches[0].pageX - e.touches[1].pageX) *
|
|
(e.touches[0].pageX - e.touches[1].pageX) +
|
|
(e.touches[0].pageY - e.touches[1].pageY) *
|
|
(e.touches[0].pageY - e.touches[1].pageY));
|
|
};
|
|
Zoom.prototype.pinchZoom = function () {
|
|
var _this = this;
|
|
var startDist = 0;
|
|
var pinchStarted = false;
|
|
var initScale = 1;
|
|
var prevScale = 0;
|
|
var $item = this.core.getSlideItem(this.core.index);
|
|
this.core.outer.on('touchstart.lg', function (e) {
|
|
$item = _this.core.getSlideItem(_this.core.index);
|
|
if (!_this.isImageSlide(_this.core.index)) {
|
|
return;
|
|
}
|
|
if (e.touches.length === 2) {
|
|
e.preventDefault();
|
|
if (_this.core.outer.hasClass('lg-first-slide-loading')) {
|
|
return;
|
|
}
|
|
initScale = _this.scale || 1;
|
|
_this.core.outer.removeClass('lg-zoom-drag-transition lg-zoom-dragging');
|
|
_this.setPageCords(e);
|
|
_this.resetImageTranslate(_this.core.index);
|
|
_this.core.touchAction = 'pinch';
|
|
startDist = _this.getTouchDistance(e);
|
|
}
|
|
});
|
|
this.core.$inner.on('touchmove.lg', function (e) {
|
|
if (e.touches.length === 2 &&
|
|
_this.core.touchAction === 'pinch' &&
|
|
(_this.$LG(e.target).hasClass('lg-item') ||
|
|
$item.get().contains(e.target))) {
|
|
e.preventDefault();
|
|
var endDist = _this.getTouchDistance(e);
|
|
var distance = startDist - endDist;
|
|
if (!pinchStarted && Math.abs(distance) > 5) {
|
|
pinchStarted = true;
|
|
}
|
|
if (pinchStarted) {
|
|
prevScale = _this.scale;
|
|
var _scale = Math.max(1, initScale + -distance * 0.02);
|
|
_this.scale =
|
|
Math.round((_scale + Number.EPSILON) * 100) / 100;
|
|
var diff = _this.scale - prevScale;
|
|
_this.zoomImage(_this.scale, Math.round((diff + Number.EPSILON) * 100) / 100, false, false);
|
|
}
|
|
}
|
|
});
|
|
this.core.$inner.on('touchend.lg', function (e) {
|
|
if (_this.core.touchAction === 'pinch' &&
|
|
(_this.$LG(e.target).hasClass('lg-item') ||
|
|
$item.get().contains(e.target))) {
|
|
pinchStarted = false;
|
|
startDist = 0;
|
|
if (_this.scale <= 1) {
|
|
_this.resetZoom();
|
|
}
|
|
else {
|
|
var actualSizeScale = _this.getCurrentImageActualSizeScale();
|
|
if (_this.scale >= actualSizeScale) {
|
|
var scaleDiff = actualSizeScale - _this.scale;
|
|
if (scaleDiff === 0) {
|
|
scaleDiff = 0.01;
|
|
}
|
|
_this.zoomImage(actualSizeScale, scaleDiff, false, true);
|
|
}
|
|
_this.manageActualPixelClassNames();
|
|
_this.core.outer.addClass('lg-zoomed');
|
|
}
|
|
_this.core.touchAction = undefined;
|
|
}
|
|
});
|
|
};
|
|
Zoom.prototype.touchendZoom = function (startCoords, endCoords, allowX, allowY, touchDuration) {
|
|
var distanceXnew = endCoords.x - startCoords.x;
|
|
var distanceYnew = endCoords.y - startCoords.y;
|
|
var speedX = Math.abs(distanceXnew) / touchDuration + 1;
|
|
var speedY = Math.abs(distanceYnew) / touchDuration + 1;
|
|
if (speedX > 2) {
|
|
speedX += 1;
|
|
}
|
|
if (speedY > 2) {
|
|
speedY += 1;
|
|
}
|
|
distanceXnew = distanceXnew * speedX;
|
|
distanceYnew = distanceYnew * speedY;
|
|
var _LGel = this.core
|
|
.getSlideItem(this.core.index)
|
|
.find('.lg-img-wrap')
|
|
.first();
|
|
var distance = {};
|
|
distance.x = this.left + distanceXnew;
|
|
distance.y = this.top + distanceYnew;
|
|
var possibleSwipeCords = this.getPossibleSwipeDragCords();
|
|
if (Math.abs(distanceXnew) > 15 || Math.abs(distanceYnew) > 15) {
|
|
if (allowY) {
|
|
if (this.isBeyondPossibleTop(distance.y, possibleSwipeCords.minY)) {
|
|
distance.y = possibleSwipeCords.minY;
|
|
}
|
|
else if (this.isBeyondPossibleBottom(distance.y, possibleSwipeCords.maxY)) {
|
|
distance.y = possibleSwipeCords.maxY;
|
|
}
|
|
}
|
|
if (allowX) {
|
|
if (this.isBeyondPossibleLeft(distance.x, possibleSwipeCords.minX)) {
|
|
distance.x = possibleSwipeCords.minX;
|
|
}
|
|
else if (this.isBeyondPossibleRight(distance.x, possibleSwipeCords.maxX)) {
|
|
distance.x = possibleSwipeCords.maxX;
|
|
}
|
|
}
|
|
if (allowY) {
|
|
this.top = distance.y;
|
|
}
|
|
else {
|
|
distance.y = this.top;
|
|
}
|
|
if (allowX) {
|
|
this.left = distance.x;
|
|
}
|
|
else {
|
|
distance.x = this.left;
|
|
}
|
|
this.setZoomSwipeStyles(_LGel, distance);
|
|
this.positionChanged = true;
|
|
}
|
|
};
|
|
Zoom.prototype.getZoomSwipeCords = function (startCoords, endCoords, allowX, allowY, possibleSwipeCords) {
|
|
var distance = {};
|
|
if (allowY) {
|
|
distance.y = this.top + (endCoords.y - startCoords.y);
|
|
if (this.isBeyondPossibleTop(distance.y, possibleSwipeCords.minY)) {
|
|
var diffMinY = possibleSwipeCords.minY - distance.y;
|
|
distance.y = possibleSwipeCords.minY - diffMinY / 6;
|
|
}
|
|
else if (this.isBeyondPossibleBottom(distance.y, possibleSwipeCords.maxY)) {
|
|
var diffMaxY = distance.y - possibleSwipeCords.maxY;
|
|
distance.y = possibleSwipeCords.maxY + diffMaxY / 6;
|
|
}
|
|
}
|
|
else {
|
|
distance.y = this.top;
|
|
}
|
|
if (allowX) {
|
|
distance.x = this.left + (endCoords.x - startCoords.x);
|
|
if (this.isBeyondPossibleLeft(distance.x, possibleSwipeCords.minX)) {
|
|
var diffMinX = possibleSwipeCords.minX - distance.x;
|
|
distance.x = possibleSwipeCords.minX - diffMinX / 6;
|
|
}
|
|
else if (this.isBeyondPossibleRight(distance.x, possibleSwipeCords.maxX)) {
|
|
var difMaxX = distance.x - possibleSwipeCords.maxX;
|
|
distance.x = possibleSwipeCords.maxX + difMaxX / 6;
|
|
}
|
|
}
|
|
else {
|
|
distance.x = this.left;
|
|
}
|
|
return distance;
|
|
};
|
|
Zoom.prototype.isBeyondPossibleLeft = function (x, minX) {
|
|
return x >= minX;
|
|
};
|
|
Zoom.prototype.isBeyondPossibleRight = function (x, maxX) {
|
|
return x <= maxX;
|
|
};
|
|
Zoom.prototype.isBeyondPossibleTop = function (y, minY) {
|
|
return y >= minY;
|
|
};
|
|
Zoom.prototype.isBeyondPossibleBottom = function (y, maxY) {
|
|
return y <= maxY;
|
|
};
|
|
Zoom.prototype.isImageSlide = function (index) {
|
|
var currentItem = this.core.galleryItems[index];
|
|
return this.core.getSlideType(currentItem) === 'image';
|
|
};
|
|
Zoom.prototype.getPossibleSwipeDragCords = function (scale) {
|
|
var $image = this.core
|
|
.getSlideItem(this.core.index)
|
|
.find('.lg-image')
|
|
.first();
|
|
var bottom = this.core.mediaContainerPosition.bottom;
|
|
var imgRect = $image.get().getBoundingClientRect();
|
|
var imageHeight = imgRect.height;
|
|
var imageWidth = imgRect.width;
|
|
if (scale) {
|
|
imageHeight = imageHeight + scale * imageHeight;
|
|
imageWidth = imageWidth + scale * imageWidth;
|
|
}
|
|
var minY = (imageHeight - this.containerRect.height) / 2;
|
|
var maxY = (this.containerRect.height - imageHeight) / 2 + bottom;
|
|
var minX = (imageWidth - this.containerRect.width) / 2;
|
|
var maxX = (this.containerRect.width - imageWidth) / 2;
|
|
var possibleSwipeCords = {
|
|
minY: minY,
|
|
maxY: maxY,
|
|
minX: minX,
|
|
maxX: maxX,
|
|
};
|
|
return possibleSwipeCords;
|
|
};
|
|
Zoom.prototype.setZoomSwipeStyles = function (LGel, distance) {
|
|
LGel.css('transform', 'translate3d(' + distance.x + 'px, ' + distance.y + 'px, 0)');
|
|
};
|
|
Zoom.prototype.zoomSwipe = function () {
|
|
var _this = this;
|
|
var startCoords = {};
|
|
var endCoords = {};
|
|
var isMoved = false;
|
|
// Allow x direction drag
|
|
var allowX = false;
|
|
// Allow Y direction drag
|
|
var allowY = false;
|
|
var startTime = new Date();
|
|
var endTime = new Date();
|
|
var possibleSwipeCords;
|
|
var _LGel;
|
|
var $item = this.core.getSlideItem(this.core.index);
|
|
this.core.$inner.on('touchstart.lg', function (e) {
|
|
// Allow zoom only on image
|
|
if (!_this.isImageSlide(_this.core.index)) {
|
|
return;
|
|
}
|
|
$item = _this.core.getSlideItem(_this.core.index);
|
|
if ((_this.$LG(e.target).hasClass('lg-item') ||
|
|
$item.get().contains(e.target)) &&
|
|
e.touches.length === 1 &&
|
|
_this.core.outer.hasClass('lg-zoomed')) {
|
|
e.preventDefault();
|
|
startTime = new Date();
|
|
_this.core.touchAction = 'zoomSwipe';
|
|
_LGel = _this.core
|
|
.getSlideItem(_this.core.index)
|
|
.find('.lg-img-wrap')
|
|
.first();
|
|
var dragAllowedAxises = _this.getDragAllowedAxises(0);
|
|
allowY = dragAllowedAxises.allowY;
|
|
allowX = dragAllowedAxises.allowX;
|
|
if (allowX || allowY) {
|
|
startCoords = _this.getSwipeCords(e);
|
|
}
|
|
possibleSwipeCords = _this.getPossibleSwipeDragCords();
|
|
// reset opacity and transition duration
|
|
_this.core.outer.addClass('lg-zoom-dragging lg-zoom-drag-transition');
|
|
}
|
|
});
|
|
this.core.$inner.on('touchmove.lg', function (e) {
|
|
if (e.touches.length === 1 &&
|
|
_this.core.touchAction === 'zoomSwipe' &&
|
|
(_this.$LG(e.target).hasClass('lg-item') ||
|
|
$item.get().contains(e.target))) {
|
|
e.preventDefault();
|
|
_this.core.touchAction = 'zoomSwipe';
|
|
endCoords = _this.getSwipeCords(e);
|
|
var distance = _this.getZoomSwipeCords(startCoords, endCoords, allowX, allowY, possibleSwipeCords);
|
|
if (Math.abs(endCoords.x - startCoords.x) > 15 ||
|
|
Math.abs(endCoords.y - startCoords.y) > 15) {
|
|
isMoved = true;
|
|
_this.setZoomSwipeStyles(_LGel, distance);
|
|
}
|
|
}
|
|
});
|
|
this.core.$inner.on('touchend.lg', function (e) {
|
|
if (_this.core.touchAction === 'zoomSwipe' &&
|
|
(_this.$LG(e.target).hasClass('lg-item') ||
|
|
$item.get().contains(e.target))) {
|
|
e.preventDefault();
|
|
_this.core.touchAction = undefined;
|
|
_this.core.outer.removeClass('lg-zoom-dragging');
|
|
if (!isMoved) {
|
|
return;
|
|
}
|
|
isMoved = false;
|
|
endTime = new Date();
|
|
var touchDuration = endTime.valueOf() - startTime.valueOf();
|
|
_this.touchendZoom(startCoords, endCoords, allowX, allowY, touchDuration);
|
|
}
|
|
});
|
|
};
|
|
Zoom.prototype.zoomDrag = function () {
|
|
var _this = this;
|
|
var startCoords = {};
|
|
var endCoords = {};
|
|
var isDragging = false;
|
|
var isMoved = false;
|
|
// Allow x direction drag
|
|
var allowX = false;
|
|
// Allow Y direction drag
|
|
var allowY = false;
|
|
var startTime;
|
|
var endTime;
|
|
var possibleSwipeCords;
|
|
var _LGel;
|
|
this.core.outer.on('mousedown.lg.zoom', function (e) {
|
|
// Allow zoom only on image
|
|
if (!_this.isImageSlide(_this.core.index)) {
|
|
return;
|
|
}
|
|
var $item = _this.core.getSlideItem(_this.core.index);
|
|
if (_this.$LG(e.target).hasClass('lg-item') ||
|
|
$item.get().contains(e.target)) {
|
|
startTime = new Date();
|
|
_LGel = _this.core
|
|
.getSlideItem(_this.core.index)
|
|
.find('.lg-img-wrap')
|
|
.first();
|
|
var dragAllowedAxises = _this.getDragAllowedAxises(0);
|
|
allowY = dragAllowedAxises.allowY;
|
|
allowX = dragAllowedAxises.allowX;
|
|
if (_this.core.outer.hasClass('lg-zoomed')) {
|
|
if (_this.$LG(e.target).hasClass('lg-object') &&
|
|
(allowX || allowY)) {
|
|
e.preventDefault();
|
|
startCoords = _this.getDragCords(e);
|
|
possibleSwipeCords = _this.getPossibleSwipeDragCords();
|
|
isDragging = true;
|
|
_this.core.outer
|
|
.removeClass('lg-grab')
|
|
.addClass('lg-grabbing lg-zoom-drag-transition lg-zoom-dragging');
|
|
// reset opacity and transition duration
|
|
}
|
|
}
|
|
}
|
|
});
|
|
this.$LG(window).on("mousemove.lg.zoom.global" + this.core.lgId, function (e) {
|
|
if (isDragging) {
|
|
isMoved = true;
|
|
endCoords = _this.getDragCords(e);
|
|
var distance = _this.getZoomSwipeCords(startCoords, endCoords, allowX, allowY, possibleSwipeCords);
|
|
_this.setZoomSwipeStyles(_LGel, distance);
|
|
}
|
|
});
|
|
this.$LG(window).on("mouseup.lg.zoom.global" + this.core.lgId, function (e) {
|
|
if (isDragging) {
|
|
endTime = new Date();
|
|
isDragging = false;
|
|
_this.core.outer.removeClass('lg-zoom-dragging');
|
|
// Fix for chrome mouse move on click
|
|
if (isMoved &&
|
|
(startCoords.x !== endCoords.x ||
|
|
startCoords.y !== endCoords.y)) {
|
|
endCoords = _this.getDragCords(e);
|
|
var touchDuration = endTime.valueOf() - startTime.valueOf();
|
|
_this.touchendZoom(startCoords, endCoords, allowX, allowY, touchDuration);
|
|
}
|
|
isMoved = false;
|
|
}
|
|
_this.core.outer.removeClass('lg-grabbing').addClass('lg-grab');
|
|
});
|
|
};
|
|
Zoom.prototype.closeGallery = function () {
|
|
this.resetZoom();
|
|
this.zoomInProgress = false;
|
|
};
|
|
Zoom.prototype.destroy = function () {
|
|
// Unbind all events added by lightGallery zoom plugin
|
|
this.$LG(window).off(".lg.zoom.global" + this.core.lgId);
|
|
this.core.LGel.off('.lg.zoom');
|
|
this.core.LGel.off('.zoom');
|
|
clearTimeout(this.zoomableTimeout);
|
|
this.zoomableTimeout = false;
|
|
};
|
|
return Zoom;
|
|
}());
|
|
|
|
return Zoom;
|
|
|
|
})));
|