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+/*! PhotoSwipe - v4.1.1 - 2015-12-24
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+* http://photoswipe.com
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+* Copyright (c) 2015 Dmitry Semenov; */
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+(function (root, factory) {
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+ if (typeof define === 'function' && define.amd) {
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+ define(factory);
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+ } else if (typeof exports === 'object') {
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+ module.exports = factory();
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+ } else {
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+ root.PhotoSwipe = factory();
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+ }
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+})(this, function () {
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+
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+ 'use strict';
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+ var PhotoSwipe = function(template, UiClass, items, options){
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+
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+/*>>framework-bridge*/
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+/**
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+ *
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+ * Set of generic functions used by gallery.
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+ *
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+ * You're free to modify anything here as long as functionality is kept.
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+ *
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+ */
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+var framework = {
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+ features: null,
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+ bind: function(target, type, listener, unbind) {
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+ var methodName = (unbind ? 'remove' : 'add') + 'EventListener';
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+ type = type.split(' ');
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+ for(var i = 0; i < type.length; i++) {
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+ if(type[i]) {
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+ target[methodName]( type[i], listener, false);
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+ }
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+ }
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+ },
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+ isArray: function(obj) {
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+ return (obj instanceof Array);
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+ },
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+ createEl: function(classes, tag) {
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+ var el = document.createElement(tag || 'div');
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+ if(classes) {
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+ el.className = classes;
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+ }
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+ return el;
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+ },
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+ getScrollY: function() {
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+ var yOffset = window.pageYOffset;
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+ return yOffset !== undefined ? yOffset : document.documentElement.scrollTop;
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+ },
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+ unbind: function(target, type, listener) {
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+ framework.bind(target,type,listener,true);
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+ },
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+ removeClass: function(el, className) {
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+ var reg = new RegExp('(\\s|^)' + className + '(\\s|$)');
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+ el.className = el.className.replace(reg, ' ').replace(/^\s\s*/, '').replace(/\s\s*$/, '');
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+ },
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+ addClass: function(el, className) {
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+ if( !framework.hasClass(el,className) ) {
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+ el.className += (el.className ? ' ' : '') + className;
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+ }
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+ },
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+ hasClass: function(el, className) {
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+ return el.className && new RegExp('(^|\\s)' + className + '(\\s|$)').test(el.className);
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+ },
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+ getChildByClass: function(parentEl, childClassName) {
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+ var node = parentEl.firstChild;
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+ while(node) {
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+ if( framework.hasClass(node, childClassName) ) {
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+ return node;
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+ }
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+ node = node.nextSibling;
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+ }
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+ },
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+ arraySearch: function(array, value, key) {
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+ var i = array.length;
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+ while(i--) {
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+ if(array[i][key] === value) {
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+ return i;
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+ }
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+ }
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+ return -1;
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+ },
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+ extend: function(o1, o2, preventOverwrite) {
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+ for (var prop in o2) {
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+ if (o2.hasOwnProperty(prop)) {
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+ if(preventOverwrite && o1.hasOwnProperty(prop)) {
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+ continue;
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+ }
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+ o1[prop] = o2[prop];
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+ }
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+ }
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+ },
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+ easing: {
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+ sine: {
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+ out: function(k) {
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+ return Math.sin(k * (Math.PI / 2));
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+ },
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+ inOut: function(k) {
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+ return - (Math.cos(Math.PI * k) - 1) / 2;
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+ }
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+ },
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+ cubic: {
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+ out: function(k) {
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+ return --k * k * k + 1;
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+ }
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+ }
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+ /*
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+ elastic: {
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+ out: function ( k ) {
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+
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+ var s, a = 0.1, p = 0.4;
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+ if ( k === 0 ) return 0;
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+ if ( k === 1 ) return 1;
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+ if ( !a || a < 1 ) { a = 1; s = p / 4; }
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+ else s = p * Math.asin( 1 / a ) / ( 2 * Math.PI );
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+ return ( a * Math.pow( 2, - 10 * k) * Math.sin( ( k - s ) * ( 2 * Math.PI ) / p ) + 1 );
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+
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+ },
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+ },
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+ back: {
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+ out: function ( k ) {
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+ var s = 1.70158;
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+ return --k * k * ( ( s + 1 ) * k + s ) + 1;
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+ }
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+ }
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+ */
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+ },
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+
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+ /**
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+ *
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+ * @return {object}
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+ *
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+ * {
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+ * raf : request animation frame function
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+ * caf : cancel animation frame function
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+ * transfrom : transform property key (with vendor), or null if not supported
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+ * oldIE : IE8 or below
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+ * }
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+ *
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+ */
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+ detectFeatures: function() {
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+ if(framework.features) {
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+ return framework.features;
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+ }
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+ var helperEl = framework.createEl(),
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+ helperStyle = helperEl.style,
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+ vendor = '',
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+ features = {};
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+
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+ // IE8 and below
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+ features.oldIE = document.all && !document.addEventListener;
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+
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+ features.touch = 'ontouchstart' in window;
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+
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+ if(window.requestAnimationFrame) {
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+ features.raf = window.requestAnimationFrame;
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+ features.caf = window.cancelAnimationFrame;
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+ }
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+
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+ features.pointerEvent = navigator.pointerEnabled || navigator.msPointerEnabled;
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+
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+ // fix false-positive detection of old Android in new IE
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+ // (IE11 ua string contains "Android 4.0")
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+
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+ if(!features.pointerEvent) {
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+
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+ var ua = navigator.userAgent;
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+
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+ // Detect if device is iPhone or iPod and if it's older than iOS 8
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+ // http://stackoverflow.com/a/14223920
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+ //
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+ // This detection is made because of buggy top/bottom toolbars
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+ // that don't trigger window.resize event.
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+ // For more info refer to _isFixedPosition variable in core.js
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+
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+ if (/iP(hone|od)/.test(navigator.platform)) {
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+ var v = (navigator.appVersion).match(/OS (\d+)_(\d+)_?(\d+)?/);
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+ if(v && v.length > 0) {
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+ v = parseInt(v[1], 10);
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+ if(v >= 1 && v < 8 ) {
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+ features.isOldIOSPhone = true;
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+ }
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+ }
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+ }
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+
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+ // Detect old Android (before KitKat)
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+ // due to bugs related to position:fixed
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+ // http://stackoverflow.com/questions/7184573/pick-up-the-android-version-in-the-browser-by-javascript
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+
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+ var match = ua.match(/Android\s([0-9\.]*)/);
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+ var androidversion = match ? match[1] : 0;
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+ androidversion = parseFloat(androidversion);
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+ if(androidversion >= 1 ) {
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+ if(androidversion < 4.4) {
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+ features.isOldAndroid = true; // for fixed position bug & performance
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+ }
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+ features.androidVersion = androidversion; // for touchend bug
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+ }
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+ features.isMobileOpera = /opera mini|opera mobi/i.test(ua);
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+
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+ // p.s. yes, yes, UA sniffing is bad, propose your solution for above bugs.
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+ }
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+
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+ var styleChecks = ['transform', 'perspective', 'animationName'],
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+ vendors = ['', 'webkit','Moz','ms','O'],
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+ styleCheckItem,
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+ styleName;
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+
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+ for(var i = 0; i < 4; i++) {
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+ vendor = vendors[i];
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+
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+ for(var a = 0; a < 3; a++) {
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+ styleCheckItem = styleChecks[a];
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+
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+ // uppercase first letter of property name, if vendor is present
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+ styleName = vendor + (vendor ?
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+ styleCheckItem.charAt(0).toUpperCase() + styleCheckItem.slice(1) :
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+ styleCheckItem);
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+
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+ if(!features[styleCheckItem] && styleName in helperStyle ) {
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+ features[styleCheckItem] = styleName;
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+ }
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+ }
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+
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+ if(vendor && !features.raf) {
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+ vendor = vendor.toLowerCase();
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+ features.raf = window[vendor+'RequestAnimationFrame'];
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+ if(features.raf) {
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+ features.caf = window[vendor+'CancelAnimationFrame'] ||
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+ window[vendor+'CancelRequestAnimationFrame'];
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+ }
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+ }
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+ }
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+
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+ if(!features.raf) {
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+ var lastTime = 0;
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+ features.raf = function(fn) {
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+ var currTime = new Date().getTime();
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+ var timeToCall = Math.max(0, 16 - (currTime - lastTime));
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+ var id = window.setTimeout(function() { fn(currTime + timeToCall); }, timeToCall);
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+ lastTime = currTime + timeToCall;
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+ return id;
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+ };
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+ features.caf = function(id) { clearTimeout(id); };
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+ }
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+
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+ // Detect SVG support
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+ features.svg = !!document.createElementNS &&
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+ !!document.createElementNS('http://www.w3.org/2000/svg', 'svg').createSVGRect;
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+
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+ framework.features = features;
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+
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+ return features;
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+ }
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+};
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+
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+framework.detectFeatures();
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+
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+// Override addEventListener for old versions of IE
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+if(framework.features.oldIE) {
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+
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+ framework.bind = function(target, type, listener, unbind) {
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+
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+ type = type.split(' ');
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+
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+ var methodName = (unbind ? 'detach' : 'attach') + 'Event',
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+ evName,
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+ _handleEv = function() {
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+ listener.handleEvent.call(listener);
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+ };
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+
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+ for(var i = 0; i < type.length; i++) {
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+ evName = type[i];
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+ if(evName) {
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+
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+ if(typeof listener === 'object' && listener.handleEvent) {
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+ if(!unbind) {
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+ listener['oldIE' + evName] = _handleEv;
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+ } else {
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+ if(!listener['oldIE' + evName]) {
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+ return false;
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+ }
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+ }
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+
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+ target[methodName]( 'on' + evName, listener['oldIE' + evName]);
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+ } else {
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+ target[methodName]( 'on' + evName, listener);
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+ }
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+
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+ }
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+ }
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+ };
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+
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+}
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+
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+/*>>framework-bridge*/
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+
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+/*>>core*/
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+//function(template, UiClass, items, options)
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+
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+var self = this;
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+
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+/**
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+ * Static vars, don't change unless you know what you're doing.
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+ */
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+var DOUBLE_TAP_RADIUS = 25,
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+ NUM_HOLDERS = 3;
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+
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+/**
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+ * Options
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+ */
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+var _options = {
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+ allowPanToNext:true,
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+ spacing: 0.12,
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+ bgOpacity: 1,
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+ mouseUsed: false,
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+ loop: true,
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+ pinchToClose: true,
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+ closeOnScroll: true,
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+ closeOnVerticalDrag: true,
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+ verticalDragRange: 0.75,
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+ hideAnimationDuration: 333,
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+ showAnimationDuration: 333,
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+ showHideOpacity: false,
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+ focus: true,
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+ escKey: true,
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+ arrowKeys: true,
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+ mainScrollEndFriction: 0.35,
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+ panEndFriction: 0.35,
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+ isClickableElement: function(el) {
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+ return el.tagName === 'A';
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+ },
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+ getDoubleTapZoom: function(isMouseClick, item) {
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+ if(isMouseClick) {
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+ return 1;
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+ } else {
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+ return item.initialZoomLevel < 0.7 ? 1 : 1.33;
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+ }
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+ },
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+ maxSpreadZoom: 1.33,
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+ modal: true,
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+
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+ // not fully implemented yet
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+ scaleMode: 'fit' // TODO
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+};
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+framework.extend(_options, options);
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+
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+
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+/**
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+ * Private helper variables & functions
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+ */
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+
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+var _getEmptyPoint = function() {
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+ return {x:0,y:0};
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+ };
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+
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+var _isOpen,
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+ _isDestroying,
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+ _closedByScroll,
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+ _currentItemIndex,
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+ _containerStyle,
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+ _containerShiftIndex,
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+ _currPanDist = _getEmptyPoint(),
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+ _startPanOffset = _getEmptyPoint(),
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+ _panOffset = _getEmptyPoint(),
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+ _upMoveEvents, // drag move, drag end & drag cancel events array
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+ _downEvents, // drag start events array
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+ _globalEventHandlers,
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+ _viewportSize = {},
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+ _currZoomLevel,
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+ _startZoomLevel,
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+ _translatePrefix,
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+ _translateSufix,
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+ _updateSizeInterval,
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+ _itemsNeedUpdate,
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+ _currPositionIndex = 0,
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+ _offset = {},
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+ _slideSize = _getEmptyPoint(), // size of slide area, including spacing
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+ _itemHolders,
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+ _prevItemIndex,
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+ _indexDiff = 0, // difference of indexes since last content update
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+ _dragStartEvent,
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+ _dragMoveEvent,
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+ _dragEndEvent,
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+ _dragCancelEvent,
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+ _transformKey,
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+ _pointerEventEnabled,
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+ _isFixedPosition = true,
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+ _likelyTouchDevice,
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+ _modules = [],
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+ _requestAF,
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+ _cancelAF,
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+ _initalClassName,
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+ _initalWindowScrollY,
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+ _oldIE,
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+ _currentWindowScrollY,
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+ _features,
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+ _windowVisibleSize = {},
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+ _renderMaxResolution = false,
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+
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+ // Registers PhotoSWipe module (History, Controller ...)
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+ _registerModule = function(name, module) {
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+ framework.extend(self, module.publicMethods);
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+ _modules.push(name);
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+ },
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+
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+ _getLoopedId = function(index) {
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+ var numSlides = _getNumItems();
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+ if(index > numSlides - 1) {
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+ return index - numSlides;
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+ } else if(index < 0) {
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+ return numSlides + index;
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+ }
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+ return index;
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+ },
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+
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+ // Micro bind/trigger
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+ _listeners = {},
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+ _listen = function(name, fn) {
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+ if(!_listeners[name]) {
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+ _listeners[name] = [];
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+ }
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+ return _listeners[name].push(fn);
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+ },
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+ _shout = function(name) {
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+ var listeners = _listeners[name];
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+
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+ if(listeners) {
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+ var args = Array.prototype.slice.call(arguments);
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+ args.shift();
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+
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+ for(var i = 0; i < listeners.length; i++) {
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+ listeners[i].apply(self, args);
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+ }
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+ }
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+ },
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+
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|
+ _getCurrentTime = function() {
|
|
|
+ return new Date().getTime();
|
|
|
+ },
|
|
|
+ _applyBgOpacity = function(opacity) {
|
|
|
+ _bgOpacity = opacity;
|
|
|
+ self.bg.style.opacity = opacity * _options.bgOpacity;
|
|
|
+ },
|
|
|
+
|
|
|
+ _applyZoomTransform = function(styleObj,x,y,zoom,item) {
|
|
|
+ if(!_renderMaxResolution || (item && item !== self.currItem) ) {
|
|
|
+ zoom = zoom / (item ? item.fitRatio : self.currItem.fitRatio);
|
|
|
+ }
|
|
|
+
|
|
|
+ styleObj[_transformKey] = _translatePrefix + x + 'px, ' + y + 'px' + _translateSufix + ' scale(' + zoom + ')';
|
|
|
+ },
|
|
|
+ _applyCurrentZoomPan = function( allowRenderResolution ) {
|
|
|
+ if(_currZoomElementStyle) {
|
|
|
+
|
|
|
+ if(allowRenderResolution) {
|
|
|
+ if(_currZoomLevel > self.currItem.fitRatio) {
|
|
|
+ if(!_renderMaxResolution) {
|
|
|
+ _setImageSize(self.currItem, false, true);
|
|
|
+ _renderMaxResolution = true;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ if(_renderMaxResolution) {
|
|
|
+ _setImageSize(self.currItem);
|
|
|
+ _renderMaxResolution = false;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ _applyZoomTransform(_currZoomElementStyle, _panOffset.x, _panOffset.y, _currZoomLevel);
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _applyZoomPanToItem = function(item) {
|
|
|
+ if(item.container) {
|
|
|
+
|
|
|
+ _applyZoomTransform(item.container.style,
|
|
|
+ item.initialPosition.x,
|
|
|
+ item.initialPosition.y,
|
|
|
+ item.initialZoomLevel,
|
|
|
+ item);
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _setTranslateX = function(x, elStyle) {
|
|
|
+ elStyle[_transformKey] = _translatePrefix + x + 'px, 0px' + _translateSufix;
|
|
|
+ },
|
|
|
+ _moveMainScroll = function(x, dragging) {
|
|
|
+
|
|
|
+ if(!_options.loop && dragging) {
|
|
|
+ var newSlideIndexOffset = _currentItemIndex + (_slideSize.x * _currPositionIndex - x) / _slideSize.x,
|
|
|
+ delta = Math.round(x - _mainScrollPos.x);
|
|
|
+
|
|
|
+ if( (newSlideIndexOffset < 0 && delta > 0) ||
|
|
|
+ (newSlideIndexOffset >= _getNumItems() - 1 && delta < 0) ) {
|
|
|
+ x = _mainScrollPos.x + delta * _options.mainScrollEndFriction;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ _mainScrollPos.x = x;
|
|
|
+ _setTranslateX(x, _containerStyle);
|
|
|
+ },
|
|
|
+ _calculatePanOffset = function(axis, zoomLevel) {
|
|
|
+ var m = _midZoomPoint[axis] - _offset[axis];
|
|
|
+ return _startPanOffset[axis] + _currPanDist[axis] + m - m * ( zoomLevel / _startZoomLevel );
|
|
|
+ },
|
|
|
+
|
|
|
+ _equalizePoints = function(p1, p2) {
|
|
|
+ p1.x = p2.x;
|
|
|
+ p1.y = p2.y;
|
|
|
+ if(p2.id) {
|
|
|
+ p1.id = p2.id;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _roundPoint = function(p) {
|
|
|
+ p.x = Math.round(p.x);
|
|
|
+ p.y = Math.round(p.y);
|
|
|
+ },
|
|
|
+
|
|
|
+ _mouseMoveTimeout = null,
|
|
|
+ _onFirstMouseMove = function() {
|
|
|
+ // Wait until mouse move event is fired at least twice during 100ms
|
|
|
+ // We do this, because some mobile browsers trigger it on touchstart
|
|
|
+ if(_mouseMoveTimeout ) {
|
|
|
+ framework.unbind(document, 'mousemove', _onFirstMouseMove);
|
|
|
+ framework.addClass(template, 'pswp--has_mouse');
|
|
|
+ _options.mouseUsed = true;
|
|
|
+ _shout('mouseUsed');
|
|
|
+ }
|
|
|
+ _mouseMoveTimeout = setTimeout(function() {
|
|
|
+ _mouseMoveTimeout = null;
|
|
|
+ }, 100);
|
|
|
+ },
|
|
|
+
|
|
|
+ _bindEvents = function() {
|
|
|
+ framework.bind(document, 'keydown', self);
|
|
|
+
|
|
|
+ if(_features.transform) {
|
|
|
+ // don't bind click event in browsers that don't support transform (mostly IE8)
|
|
|
+ framework.bind(self.scrollWrap, 'click', self);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ if(!_options.mouseUsed) {
|
|
|
+ framework.bind(document, 'mousemove', _onFirstMouseMove);
|
|
|
+ }
|
|
|
+
|
|
|
+ framework.bind(window, 'resize scroll', self);
|
|
|
+
|
|
|
+ _shout('bindEvents');
|
|
|
+ },
|
|
|
+
|
|
|
+ _unbindEvents = function() {
|
|
|
+ framework.unbind(window, 'resize', self);
|
|
|
+ framework.unbind(window, 'scroll', _globalEventHandlers.scroll);
|
|
|
+ framework.unbind(document, 'keydown', self);
|
|
|
+ framework.unbind(document, 'mousemove', _onFirstMouseMove);
|
|
|
+
|
|
|
+ if(_features.transform) {
|
|
|
+ framework.unbind(self.scrollWrap, 'click', self);
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_isDragging) {
|
|
|
+ framework.unbind(window, _upMoveEvents, self);
|
|
|
+ }
|
|
|
+
|
|
|
+ _shout('unbindEvents');
|
|
|
+ },
|
|
|
+
|
|
|
+ _calculatePanBounds = function(zoomLevel, update) {
|
|
|
+ var bounds = _calculateItemSize( self.currItem, _viewportSize, zoomLevel );
|
|
|
+ if(update) {
|
|
|
+ _currPanBounds = bounds;
|
|
|
+ }
|
|
|
+ return bounds;
|
|
|
+ },
|
|
|
+
|
|
|
+ _getMinZoomLevel = function(item) {
|
|
|
+ if(!item) {
|
|
|
+ item = self.currItem;
|
|
|
+ }
|
|
|
+ return item.initialZoomLevel;
|
|
|
+ },
|
|
|
+ _getMaxZoomLevel = function(item) {
|
|
|
+ if(!item) {
|
|
|
+ item = self.currItem;
|
|
|
+ }
|
|
|
+ return item.w > 0 ? _options.maxSpreadZoom : 1;
|
|
|
+ },
|
|
|
+
|
|
|
+ // Return true if offset is out of the bounds
|
|
|
+ _modifyDestPanOffset = function(axis, destPanBounds, destPanOffset, destZoomLevel) {
|
|
|
+ if(destZoomLevel === self.currItem.initialZoomLevel) {
|
|
|
+ destPanOffset[axis] = self.currItem.initialPosition[axis];
|
|
|
+ return true;
|
|
|
+ } else {
|
|
|
+ destPanOffset[axis] = _calculatePanOffset(axis, destZoomLevel);
|
|
|
+
|
|
|
+ if(destPanOffset[axis] > destPanBounds.min[axis]) {
|
|
|
+ destPanOffset[axis] = destPanBounds.min[axis];
|
|
|
+ return true;
|
|
|
+ } else if(destPanOffset[axis] < destPanBounds.max[axis] ) {
|
|
|
+ destPanOffset[axis] = destPanBounds.max[axis];
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return false;
|
|
|
+ },
|
|
|
+
|
|
|
+ _setupTransforms = function() {
|
|
|
+
|
|
|
+ if(_transformKey) {
|
|
|
+ // setup 3d transforms
|
|
|
+ var allow3dTransform = _features.perspective && !_likelyTouchDevice;
|
|
|
+ _translatePrefix = 'translate' + (allow3dTransform ? '3d(' : '(');
|
|
|
+ _translateSufix = _features.perspective ? ', 0px)' : ')';
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Override zoom/pan/move functions in case old browser is used (most likely IE)
|
|
|
+ // (so they use left/top/width/height, instead of CSS transform)
|
|
|
+
|
|
|
+ _transformKey = 'left';
|
|
|
+ framework.addClass(template, 'pswp--ie');
|
|
|
+
|
|
|
+ _setTranslateX = function(x, elStyle) {
|
|
|
+ elStyle.left = x + 'px';
|
|
|
+ };
|
|
|
+ _applyZoomPanToItem = function(item) {
|
|
|
+
|
|
|
+ var zoomRatio = item.fitRatio > 1 ? 1 : item.fitRatio,
|
|
|
+ s = item.container.style,
|
|
|
+ w = zoomRatio * item.w,
|
|
|
+ h = zoomRatio * item.h;
|
|
|
+
|
|
|
+ s.width = w + 'px';
|
|
|
+ s.height = h + 'px';
|
|
|
+ s.left = item.initialPosition.x + 'px';
|
|
|
+ s.top = item.initialPosition.y + 'px';
|
|
|
+
|
|
|
+ };
|
|
|
+ _applyCurrentZoomPan = function() {
|
|
|
+ if(_currZoomElementStyle) {
|
|
|
+
|
|
|
+ var s = _currZoomElementStyle,
|
|
|
+ item = self.currItem,
|
|
|
+ zoomRatio = item.fitRatio > 1 ? 1 : item.fitRatio,
|
|
|
+ w = zoomRatio * item.w,
|
|
|
+ h = zoomRatio * item.h;
|
|
|
+
|
|
|
+ s.width = w + 'px';
|
|
|
+ s.height = h + 'px';
|
|
|
+
|
|
|
+
|
|
|
+ s.left = _panOffset.x + 'px';
|
|
|
+ s.top = _panOffset.y + 'px';
|
|
|
+ }
|
|
|
+
|
|
|
+ };
|
|
|
+ },
|
|
|
+
|
|
|
+ _onKeyDown = function(e) {
|
|
|
+ var keydownAction = '';
|
|
|
+ if(_options.escKey && e.keyCode === 27) {
|
|
|
+ keydownAction = 'close';
|
|
|
+ } else if(_options.arrowKeys) {
|
|
|
+ if(e.keyCode === 37) {
|
|
|
+ keydownAction = 'prev';
|
|
|
+ } else if(e.keyCode === 39) {
|
|
|
+ keydownAction = 'next';
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if(keydownAction) {
|
|
|
+ // don't do anything if special key pressed to prevent from overriding default browser actions
|
|
|
+ // e.g. in Chrome on Mac cmd+arrow-left returns to previous page
|
|
|
+ if( !e.ctrlKey && !e.altKey && !e.shiftKey && !e.metaKey ) {
|
|
|
+ if(e.preventDefault) {
|
|
|
+ e.preventDefault();
|
|
|
+ } else {
|
|
|
+ e.returnValue = false;
|
|
|
+ }
|
|
|
+ self[keydownAction]();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ _onGlobalClick = function(e) {
|
|
|
+ if(!e) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ // don't allow click event to pass through when triggering after drag or some other gesture
|
|
|
+ if(_moved || _zoomStarted || _mainScrollAnimating || _verticalDragInitiated) {
|
|
|
+ e.preventDefault();
|
|
|
+ e.stopPropagation();
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ _updatePageScrollOffset = function() {
|
|
|
+ self.setScrollOffset(0, framework.getScrollY());
|
|
|
+ };
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+// Micro animation engine
|
|
|
+var _animations = {},
|
|
|
+ _numAnimations = 0,
|
|
|
+ _stopAnimation = function(name) {
|
|
|
+ if(_animations[name]) {
|
|
|
+ if(_animations[name].raf) {
|
|
|
+ _cancelAF( _animations[name].raf );
|
|
|
+ }
|
|
|
+ _numAnimations--;
|
|
|
+ delete _animations[name];
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _registerStartAnimation = function(name) {
|
|
|
+ if(_animations[name]) {
|
|
|
+ _stopAnimation(name);
|
|
|
+ }
|
|
|
+ if(!_animations[name]) {
|
|
|
+ _numAnimations++;
|
|
|
+ _animations[name] = {};
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _stopAllAnimations = function() {
|
|
|
+ for (var prop in _animations) {
|
|
|
+
|
|
|
+ if( _animations.hasOwnProperty( prop ) ) {
|
|
|
+ _stopAnimation(prop);
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _animateProp = function(name, b, endProp, d, easingFn, onUpdate, onComplete) {
|
|
|
+ var startAnimTime = _getCurrentTime(), t;
|
|
|
+ _registerStartAnimation(name);
|
|
|
+
|
|
|
+ var animloop = function(){
|
|
|
+ if ( _animations[name] ) {
|
|
|
+
|
|
|
+ t = _getCurrentTime() - startAnimTime; // time diff
|
|
|
+ //b - beginning (start prop)
|
|
|
+ //d - anim duration
|
|
|
+
|
|
|
+ if ( t >= d ) {
|
|
|
+ _stopAnimation(name);
|
|
|
+ onUpdate(endProp);
|
|
|
+ if(onComplete) {
|
|
|
+ onComplete();
|
|
|
+ }
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ onUpdate( (endProp - b) * easingFn(t/d) + b );
|
|
|
+
|
|
|
+ _animations[name].raf = _requestAF(animloop);
|
|
|
+ }
|
|
|
+ };
|
|
|
+ animloop();
|
|
|
+ };
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+var publicMethods = {
|
|
|
+
|
|
|
+ // make a few local variables and functions public
|
|
|
+ shout: _shout,
|
|
|
+ listen: _listen,
|
|
|
+ viewportSize: _viewportSize,
|
|
|
+ options: _options,
|
|
|
+
|
|
|
+ isMainScrollAnimating: function() {
|
|
|
+ return _mainScrollAnimating;
|
|
|
+ },
|
|
|
+ getZoomLevel: function() {
|
|
|
+ return _currZoomLevel;
|
|
|
+ },
|
|
|
+ getCurrentIndex: function() {
|
|
|
+ return _currentItemIndex;
|
|
|
+ },
|
|
|
+ isDragging: function() {
|
|
|
+ return _isDragging;
|
|
|
+ },
|
|
|
+ isZooming: function() {
|
|
|
+ return _isZooming;
|
|
|
+ },
|
|
|
+ setScrollOffset: function(x,y) {
|
|
|
+ _offset.x = x;
|
|
|
+ _currentWindowScrollY = _offset.y = y;
|
|
|
+ _shout('updateScrollOffset', _offset);
|
|
|
+ },
|
|
|
+ applyZoomPan: function(zoomLevel,panX,panY,allowRenderResolution) {
|
|
|
+ _panOffset.x = panX;
|
|
|
+ _panOffset.y = panY;
|
|
|
+ _currZoomLevel = zoomLevel;
|
|
|
+ _applyCurrentZoomPan( allowRenderResolution );
|
|
|
+ },
|
|
|
+
|
|
|
+ init: function() {
|
|
|
+
|
|
|
+ if(_isOpen || _isDestroying) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ var i;
|
|
|
+
|
|
|
+ self.framework = framework; // basic functionality
|
|
|
+ self.template = template; // root DOM element of PhotoSwipe
|
|
|
+ self.bg = framework.getChildByClass(template, 'pswp__bg');
|
|
|
+
|
|
|
+ _initalClassName = template.className;
|
|
|
+ _isOpen = true;
|
|
|
+
|
|
|
+ _features = framework.detectFeatures();
|
|
|
+ _requestAF = _features.raf;
|
|
|
+ _cancelAF = _features.caf;
|
|
|
+ _transformKey = _features.transform;
|
|
|
+ _oldIE = _features.oldIE;
|
|
|
+
|
|
|
+ self.scrollWrap = framework.getChildByClass(template, 'pswp__scroll-wrap');
|
|
|
+ self.container = framework.getChildByClass(self.scrollWrap, 'pswp__container');
|
|
|
+
|
|
|
+ _containerStyle = self.container.style; // for fast access
|
|
|
+
|
|
|
+ // Objects that hold slides (there are only 3 in DOM)
|
|
|
+ self.itemHolders = _itemHolders = [
|
|
|
+ {el:self.container.children[0] , wrap:0, index: -1},
|
|
|
+ {el:self.container.children[1] , wrap:0, index: -1},
|
|
|
+ {el:self.container.children[2] , wrap:0, index: -1}
|
|
|
+ ];
|
|
|
+
|
|
|
+ // hide nearby item holders until initial zoom animation finishes (to avoid extra Paints)
|
|
|
+ _itemHolders[0].el.style.display = _itemHolders[2].el.style.display = 'none';
|
|
|
+
|
|
|
+ _setupTransforms();
|
|
|
+
|
|
|
+ // Setup global events
|
|
|
+ _globalEventHandlers = {
|
|
|
+ resize: self.updateSize,
|
|
|
+ scroll: _updatePageScrollOffset,
|
|
|
+ keydown: _onKeyDown,
|
|
|
+ click: _onGlobalClick
|
|
|
+ };
|
|
|
+
|
|
|
+ // disable show/hide effects on old browsers that don't support CSS animations or transforms,
|
|
|
+ // old IOS, Android and Opera mobile. Blackberry seems to work fine, even older models.
|
|
|
+ var oldPhone = _features.isOldIOSPhone || _features.isOldAndroid || _features.isMobileOpera;
|
|
|
+ if(!_features.animationName || !_features.transform || oldPhone) {
|
|
|
+ _options.showAnimationDuration = _options.hideAnimationDuration = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ // init modules
|
|
|
+ for(i = 0; i < _modules.length; i++) {
|
|
|
+ self['init' + _modules[i]]();
|
|
|
+ }
|
|
|
+
|
|
|
+ // init
|
|
|
+ if(UiClass) {
|
|
|
+ var ui = self.ui = new UiClass(self, framework);
|
|
|
+ ui.init();
|
|
|
+ }
|
|
|
+
|
|
|
+ _shout('firstUpdate');
|
|
|
+ _currentItemIndex = _currentItemIndex || _options.index || 0;
|
|
|
+ // validate index
|
|
|
+ if( isNaN(_currentItemIndex) || _currentItemIndex < 0 || _currentItemIndex >= _getNumItems() ) {
|
|
|
+ _currentItemIndex = 0;
|
|
|
+ }
|
|
|
+ self.currItem = _getItemAt( _currentItemIndex );
|
|
|
+
|
|
|
+
|
|
|
+ if(_features.isOldIOSPhone || _features.isOldAndroid) {
|
|
|
+ _isFixedPosition = false;
|
|
|
+ }
|
|
|
+
|
|
|
+ template.setAttribute('aria-hidden', 'false');
|
|
|
+ if(_options.modal) {
|
|
|
+ if(!_isFixedPosition) {
|
|
|
+ template.style.position = 'absolute';
|
|
|
+ template.style.top = framework.getScrollY() + 'px';
|
|
|
+ } else {
|
|
|
+ template.style.position = 'fixed';
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_currentWindowScrollY === undefined) {
|
|
|
+ _shout('initialLayout');
|
|
|
+ _currentWindowScrollY = _initalWindowScrollY = framework.getScrollY();
|
|
|
+ }
|
|
|
+
|
|
|
+ // add classes to root element of PhotoSwipe
|
|
|
+ var rootClasses = 'pswp--open ';
|
|
|
+ if(_options.mainClass) {
|
|
|
+ rootClasses += _options.mainClass + ' ';
|
|
|
+ }
|
|
|
+ if(_options.showHideOpacity) {
|
|
|
+ rootClasses += 'pswp--animate_opacity ';
|
|
|
+ }
|
|
|
+ rootClasses += _likelyTouchDevice ? 'pswp--touch' : 'pswp--notouch';
|
|
|
+ rootClasses += _features.animationName ? ' pswp--css_animation' : '';
|
|
|
+ rootClasses += _features.svg ? ' pswp--svg' : '';
|
|
|
+ framework.addClass(template, rootClasses);
|
|
|
+
|
|
|
+ self.updateSize();
|
|
|
+
|
|
|
+ // initial update
|
|
|
+ _containerShiftIndex = -1;
|
|
|
+ _indexDiff = null;
|
|
|
+ for(i = 0; i < NUM_HOLDERS; i++) {
|
|
|
+ _setTranslateX( (i+_containerShiftIndex) * _slideSize.x, _itemHolders[i].el.style);
|
|
|
+ }
|
|
|
+
|
|
|
+ if(!_oldIE) {
|
|
|
+ framework.bind(self.scrollWrap, _downEvents, self); // no dragging for old IE
|
|
|
+ }
|
|
|
+
|
|
|
+ _listen('initialZoomInEnd', function() {
|
|
|
+ self.setContent(_itemHolders[0], _currentItemIndex-1);
|
|
|
+ self.setContent(_itemHolders[2], _currentItemIndex+1);
|
|
|
+
|
|
|
+ _itemHolders[0].el.style.display = _itemHolders[2].el.style.display = 'block';
|
|
|
+
|
|
|
+ if(_options.focus) {
|
|
|
+ // focus causes layout,
|
|
|
+ // which causes lag during the animation,
|
|
|
+ // that's why we delay it untill the initial zoom transition ends
|
|
|
+ template.focus();
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ _bindEvents();
|
|
|
+ });
|
|
|
+
|
|
|
+ // set content for center slide (first time)
|
|
|
+ self.setContent(_itemHolders[1], _currentItemIndex);
|
|
|
+
|
|
|
+ self.updateCurrItem();
|
|
|
+
|
|
|
+ _shout('afterInit');
|
|
|
+
|
|
|
+ if(!_isFixedPosition) {
|
|
|
+
|
|
|
+ // On all versions of iOS lower than 8.0, we check size of viewport every second.
|
|
|
+ //
|
|
|
+ // This is done to detect when Safari top & bottom bars appear,
|
|
|
+ // as this action doesn't trigger any events (like resize).
|
|
|
+ //
|
|
|
+ // On iOS8 they fixed this.
|
|
|
+ //
|
|
|
+ // 10 Nov 2014: iOS 7 usage ~40%. iOS 8 usage 56%.
|
|
|
+
|
|
|
+ _updateSizeInterval = setInterval(function() {
|
|
|
+ if(!_numAnimations && !_isDragging && !_isZooming && (_currZoomLevel === self.currItem.initialZoomLevel) ) {
|
|
|
+ self.updateSize();
|
|
|
+ }
|
|
|
+ }, 1000);
|
|
|
+ }
|
|
|
+
|
|
|
+ framework.addClass(template, 'pswp--visible');
|
|
|
+ },
|
|
|
+
|
|
|
+ // Close the gallery, then destroy it
|
|
|
+ close: function() {
|
|
|
+ if(!_isOpen) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ _isOpen = false;
|
|
|
+ _isDestroying = true;
|
|
|
+ _shout('close');
|
|
|
+ _unbindEvents();
|
|
|
+
|
|
|
+ _showOrHide(self.currItem, null, true, self.destroy);
|
|
|
+ },
|
|
|
+
|
|
|
+ // destroys the gallery (unbinds events, cleans up intervals and timeouts to avoid memory leaks)
|
|
|
+ destroy: function() {
|
|
|
+ _shout('destroy');
|
|
|
+
|
|
|
+ if(_showOrHideTimeout) {
|
|
|
+ clearTimeout(_showOrHideTimeout);
|
|
|
+ }
|
|
|
+
|
|
|
+ template.setAttribute('aria-hidden', 'true');
|
|
|
+ template.className = _initalClassName;
|
|
|
+
|
|
|
+ if(_updateSizeInterval) {
|
|
|
+ clearInterval(_updateSizeInterval);
|
|
|
+ }
|
|
|
+
|
|
|
+ framework.unbind(self.scrollWrap, _downEvents, self);
|
|
|
+
|
|
|
+ // we unbind scroll event at the end, as closing animation may depend on it
|
|
|
+ framework.unbind(window, 'scroll', self);
|
|
|
+
|
|
|
+ _stopDragUpdateLoop();
|
|
|
+
|
|
|
+ _stopAllAnimations();
|
|
|
+
|
|
|
+ _listeners = null;
|
|
|
+ },
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Pan image to position
|
|
|
+ * @param {Number} x
|
|
|
+ * @param {Number} y
|
|
|
+ * @param {Boolean} force Will ignore bounds if set to true.
|
|
|
+ */
|
|
|
+ panTo: function(x,y,force) {
|
|
|
+ if(!force) {
|
|
|
+ if(x > _currPanBounds.min.x) {
|
|
|
+ x = _currPanBounds.min.x;
|
|
|
+ } else if(x < _currPanBounds.max.x) {
|
|
|
+ x = _currPanBounds.max.x;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(y > _currPanBounds.min.y) {
|
|
|
+ y = _currPanBounds.min.y;
|
|
|
+ } else if(y < _currPanBounds.max.y) {
|
|
|
+ y = _currPanBounds.max.y;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ _panOffset.x = x;
|
|
|
+ _panOffset.y = y;
|
|
|
+ _applyCurrentZoomPan();
|
|
|
+ },
|
|
|
+
|
|
|
+ handleEvent: function (e) {
|
|
|
+ e = e || window.event;
|
|
|
+ if(_globalEventHandlers[e.type]) {
|
|
|
+ _globalEventHandlers[e.type](e);
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+ goTo: function(index) {
|
|
|
+
|
|
|
+ index = _getLoopedId(index);
|
|
|
+
|
|
|
+ var diff = index - _currentItemIndex;
|
|
|
+ _indexDiff = diff;
|
|
|
+
|
|
|
+ _currentItemIndex = index;
|
|
|
+ self.currItem = _getItemAt( _currentItemIndex );
|
|
|
+ _currPositionIndex -= diff;
|
|
|
+
|
|
|
+ _moveMainScroll(_slideSize.x * _currPositionIndex);
|
|
|
+
|
|
|
+
|
|
|
+ _stopAllAnimations();
|
|
|
+ _mainScrollAnimating = false;
|
|
|
+
|
|
|
+ self.updateCurrItem();
|
|
|
+ },
|
|
|
+ next: function() {
|
|
|
+ self.goTo( _currentItemIndex + 1);
|
|
|
+ },
|
|
|
+ prev: function() {
|
|
|
+ self.goTo( _currentItemIndex - 1);
|
|
|
+ },
|
|
|
+
|
|
|
+ // update current zoom/pan objects
|
|
|
+ updateCurrZoomItem: function(emulateSetContent) {
|
|
|
+ if(emulateSetContent) {
|
|
|
+ _shout('beforeChange', 0);
|
|
|
+ }
|
|
|
+
|
|
|
+ // itemHolder[1] is middle (current) item
|
|
|
+ if(_itemHolders[1].el.children.length) {
|
|
|
+ var zoomElement = _itemHolders[1].el.children[0];
|
|
|
+ if( framework.hasClass(zoomElement, 'pswp__zoom-wrap') ) {
|
|
|
+ _currZoomElementStyle = zoomElement.style;
|
|
|
+ } else {
|
|
|
+ _currZoomElementStyle = null;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ _currZoomElementStyle = null;
|
|
|
+ }
|
|
|
+
|
|
|
+ _currPanBounds = self.currItem.bounds;
|
|
|
+ _startZoomLevel = _currZoomLevel = self.currItem.initialZoomLevel;
|
|
|
+
|
|
|
+ _panOffset.x = _currPanBounds.center.x;
|
|
|
+ _panOffset.y = _currPanBounds.center.y;
|
|
|
+
|
|
|
+ if(emulateSetContent) {
|
|
|
+ _shout('afterChange');
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+ invalidateCurrItems: function() {
|
|
|
+ _itemsNeedUpdate = true;
|
|
|
+ for(var i = 0; i < NUM_HOLDERS; i++) {
|
|
|
+ if( _itemHolders[i].item ) {
|
|
|
+ _itemHolders[i].item.needsUpdate = true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ updateCurrItem: function(beforeAnimation) {
|
|
|
+
|
|
|
+ if(_indexDiff === 0) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ var diffAbs = Math.abs(_indexDiff),
|
|
|
+ tempHolder;
|
|
|
+
|
|
|
+ if(beforeAnimation && diffAbs < 2) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ self.currItem = _getItemAt( _currentItemIndex );
|
|
|
+ _renderMaxResolution = false;
|
|
|
+
|
|
|
+ _shout('beforeChange', _indexDiff);
|
|
|
+
|
|
|
+ if(diffAbs >= NUM_HOLDERS) {
|
|
|
+ _containerShiftIndex += _indexDiff + (_indexDiff > 0 ? -NUM_HOLDERS : NUM_HOLDERS);
|
|
|
+ diffAbs = NUM_HOLDERS;
|
|
|
+ }
|
|
|
+ for(var i = 0; i < diffAbs; i++) {
|
|
|
+ if(_indexDiff > 0) {
|
|
|
+ tempHolder = _itemHolders.shift();
|
|
|
+ _itemHolders[NUM_HOLDERS-1] = tempHolder; // move first to last
|
|
|
+
|
|
|
+ _containerShiftIndex++;
|
|
|
+ _setTranslateX( (_containerShiftIndex+2) * _slideSize.x, tempHolder.el.style);
|
|
|
+ self.setContent(tempHolder, _currentItemIndex - diffAbs + i + 1 + 1);
|
|
|
+ } else {
|
|
|
+ tempHolder = _itemHolders.pop();
|
|
|
+ _itemHolders.unshift( tempHolder ); // move last to first
|
|
|
+
|
|
|
+ _containerShiftIndex--;
|
|
|
+ _setTranslateX( _containerShiftIndex * _slideSize.x, tempHolder.el.style);
|
|
|
+ self.setContent(tempHolder, _currentItemIndex + diffAbs - i - 1 - 1);
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ // reset zoom/pan on previous item
|
|
|
+ if(_currZoomElementStyle && Math.abs(_indexDiff) === 1) {
|
|
|
+
|
|
|
+ var prevItem = _getItemAt(_prevItemIndex);
|
|
|
+ if(prevItem.initialZoomLevel !== _currZoomLevel) {
|
|
|
+ _calculateItemSize(prevItem , _viewportSize );
|
|
|
+ _setImageSize(prevItem);
|
|
|
+ _applyZoomPanToItem( prevItem );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ // reset diff after update
|
|
|
+ _indexDiff = 0;
|
|
|
+
|
|
|
+ self.updateCurrZoomItem();
|
|
|
+
|
|
|
+ _prevItemIndex = _currentItemIndex;
|
|
|
+
|
|
|
+ _shout('afterChange');
|
|
|
+
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ updateSize: function(force) {
|
|
|
+
|
|
|
+ if(!_isFixedPosition && _options.modal) {
|
|
|
+ var windowScrollY = framework.getScrollY();
|
|
|
+ if(_currentWindowScrollY !== windowScrollY) {
|
|
|
+ template.style.top = windowScrollY + 'px';
|
|
|
+ _currentWindowScrollY = windowScrollY;
|
|
|
+ }
|
|
|
+ if(!force && _windowVisibleSize.x === window.innerWidth && _windowVisibleSize.y === window.innerHeight) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ _windowVisibleSize.x = window.innerWidth;
|
|
|
+ _windowVisibleSize.y = window.innerHeight;
|
|
|
+
|
|
|
+ //template.style.width = _windowVisibleSize.x + 'px';
|
|
|
+ template.style.height = _windowVisibleSize.y + 'px';
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ _viewportSize.x = self.scrollWrap.clientWidth;
|
|
|
+ _viewportSize.y = self.scrollWrap.clientHeight;
|
|
|
+
|
|
|
+ _updatePageScrollOffset();
|
|
|
+
|
|
|
+ _slideSize.x = _viewportSize.x + Math.round(_viewportSize.x * _options.spacing);
|
|
|
+ _slideSize.y = _viewportSize.y;
|
|
|
+
|
|
|
+ _moveMainScroll(_slideSize.x * _currPositionIndex);
|
|
|
+
|
|
|
+ _shout('beforeResize'); // even may be used for example to switch image sources
|
|
|
+
|
|
|
+
|
|
|
+ // don't re-calculate size on inital size update
|
|
|
+ if(_containerShiftIndex !== undefined) {
|
|
|
+
|
|
|
+ var holder,
|
|
|
+ item,
|
|
|
+ hIndex;
|
|
|
+
|
|
|
+ for(var i = 0; i < NUM_HOLDERS; i++) {
|
|
|
+ holder = _itemHolders[i];
|
|
|
+ _setTranslateX( (i+_containerShiftIndex) * _slideSize.x, holder.el.style);
|
|
|
+
|
|
|
+ hIndex = _currentItemIndex+i-1;
|
|
|
+
|
|
|
+ if(_options.loop && _getNumItems() > 2) {
|
|
|
+ hIndex = _getLoopedId(hIndex);
|
|
|
+ }
|
|
|
+
|
|
|
+ // update zoom level on items and refresh source (if needsUpdate)
|
|
|
+ item = _getItemAt( hIndex );
|
|
|
+
|
|
|
+ // re-render gallery item if `needsUpdate`,
|
|
|
+ // or doesn't have `bounds` (entirely new slide object)
|
|
|
+ if( item && (_itemsNeedUpdate || item.needsUpdate || !item.bounds) ) {
|
|
|
+
|
|
|
+ self.cleanSlide( item );
|
|
|
+
|
|
|
+ self.setContent( holder, hIndex );
|
|
|
+
|
|
|
+ // if "center" slide
|
|
|
+ if(i === 1) {
|
|
|
+ self.currItem = item;
|
|
|
+ self.updateCurrZoomItem(true);
|
|
|
+ }
|
|
|
+
|
|
|
+ item.needsUpdate = false;
|
|
|
+
|
|
|
+ } else if(holder.index === -1 && hIndex >= 0) {
|
|
|
+ // add content first time
|
|
|
+ self.setContent( holder, hIndex );
|
|
|
+ }
|
|
|
+ if(item && item.container) {
|
|
|
+ _calculateItemSize(item, _viewportSize);
|
|
|
+ _setImageSize(item);
|
|
|
+ _applyZoomPanToItem( item );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+ _itemsNeedUpdate = false;
|
|
|
+ }
|
|
|
+
|
|
|
+ _startZoomLevel = _currZoomLevel = self.currItem.initialZoomLevel;
|
|
|
+ _currPanBounds = self.currItem.bounds;
|
|
|
+
|
|
|
+ if(_currPanBounds) {
|
|
|
+ _panOffset.x = _currPanBounds.center.x;
|
|
|
+ _panOffset.y = _currPanBounds.center.y;
|
|
|
+ _applyCurrentZoomPan( true );
|
|
|
+ }
|
|
|
+
|
|
|
+ _shout('resize');
|
|
|
+ },
|
|
|
+
|
|
|
+ // Zoom current item to
|
|
|
+ zoomTo: function(destZoomLevel, centerPoint, speed, easingFn, updateFn) {
|
|
|
+ /*
|
|
|
+ if(destZoomLevel === 'fit') {
|
|
|
+ destZoomLevel = self.currItem.fitRatio;
|
|
|
+ } else if(destZoomLevel === 'fill') {
|
|
|
+ destZoomLevel = self.currItem.fillRatio;
|
|
|
+ }
|
|
|
+ */
|
|
|
+
|
|
|
+ if(centerPoint) {
|
|
|
+ _startZoomLevel = _currZoomLevel;
|
|
|
+ _midZoomPoint.x = Math.abs(centerPoint.x) - _panOffset.x ;
|
|
|
+ _midZoomPoint.y = Math.abs(centerPoint.y) - _panOffset.y ;
|
|
|
+ _equalizePoints(_startPanOffset, _panOffset);
|
|
|
+ }
|
|
|
+
|
|
|
+ var destPanBounds = _calculatePanBounds(destZoomLevel, false),
|
|
|
+ destPanOffset = {};
|
|
|
+
|
|
|
+ _modifyDestPanOffset('x', destPanBounds, destPanOffset, destZoomLevel);
|
|
|
+ _modifyDestPanOffset('y', destPanBounds, destPanOffset, destZoomLevel);
|
|
|
+
|
|
|
+ var initialZoomLevel = _currZoomLevel;
|
|
|
+ var initialPanOffset = {
|
|
|
+ x: _panOffset.x,
|
|
|
+ y: _panOffset.y
|
|
|
+ };
|
|
|
+
|
|
|
+ _roundPoint(destPanOffset);
|
|
|
+
|
|
|
+ var onUpdate = function(now) {
|
|
|
+ if(now === 1) {
|
|
|
+ _currZoomLevel = destZoomLevel;
|
|
|
+ _panOffset.x = destPanOffset.x;
|
|
|
+ _panOffset.y = destPanOffset.y;
|
|
|
+ } else {
|
|
|
+ _currZoomLevel = (destZoomLevel - initialZoomLevel) * now + initialZoomLevel;
|
|
|
+ _panOffset.x = (destPanOffset.x - initialPanOffset.x) * now + initialPanOffset.x;
|
|
|
+ _panOffset.y = (destPanOffset.y - initialPanOffset.y) * now + initialPanOffset.y;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(updateFn) {
|
|
|
+ updateFn(now);
|
|
|
+ }
|
|
|
+
|
|
|
+ _applyCurrentZoomPan( now === 1 );
|
|
|
+ };
|
|
|
+
|
|
|
+ if(speed) {
|
|
|
+ _animateProp('customZoomTo', 0, 1, speed, easingFn || framework.easing.sine.inOut, onUpdate);
|
|
|
+ } else {
|
|
|
+ onUpdate(1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+/*>>core*/
|
|
|
+
|
|
|
+/*>>gestures*/
|
|
|
+/**
|
|
|
+ * Mouse/touch/pointer event handlers.
|
|
|
+ *
|
|
|
+ * separated from @core.js for readability
|
|
|
+ */
|
|
|
+
|
|
|
+var MIN_SWIPE_DISTANCE = 30,
|
|
|
+ DIRECTION_CHECK_OFFSET = 10; // amount of pixels to drag to determine direction of swipe
|
|
|
+
|
|
|
+var _gestureStartTime,
|
|
|
+ _gestureCheckSpeedTime,
|
|
|
+
|
|
|
+ // pool of objects that are used during dragging of zooming
|
|
|
+ p = {}, // first point
|
|
|
+ p2 = {}, // second point (for zoom gesture)
|
|
|
+ delta = {},
|
|
|
+ _currPoint = {},
|
|
|
+ _startPoint = {},
|
|
|
+ _currPointers = [],
|
|
|
+ _startMainScrollPos = {},
|
|
|
+ _releaseAnimData,
|
|
|
+ _posPoints = [], // array of points during dragging, used to determine type of gesture
|
|
|
+ _tempPoint = {},
|
|
|
+
|
|
|
+ _isZoomingIn,
|
|
|
+ _verticalDragInitiated,
|
|
|
+ _oldAndroidTouchEndTimeout,
|
|
|
+ _currZoomedItemIndex = 0,
|
|
|
+ _centerPoint = _getEmptyPoint(),
|
|
|
+ _lastReleaseTime = 0,
|
|
|
+ _isDragging, // at least one pointer is down
|
|
|
+ _isMultitouch, // at least two _pointers are down
|
|
|
+ _zoomStarted, // zoom level changed during zoom gesture
|
|
|
+ _moved,
|
|
|
+ _dragAnimFrame,
|
|
|
+ _mainScrollShifted,
|
|
|
+ _currentPoints, // array of current touch points
|
|
|
+ _isZooming,
|
|
|
+ _currPointsDistance,
|
|
|
+ _startPointsDistance,
|
|
|
+ _currPanBounds,
|
|
|
+ _mainScrollPos = _getEmptyPoint(),
|
|
|
+ _currZoomElementStyle,
|
|
|
+ _mainScrollAnimating, // true, if animation after swipe gesture is running
|
|
|
+ _midZoomPoint = _getEmptyPoint(),
|
|
|
+ _currCenterPoint = _getEmptyPoint(),
|
|
|
+ _direction,
|
|
|
+ _isFirstMove,
|
|
|
+ _opacityChanged,
|
|
|
+ _bgOpacity,
|
|
|
+ _wasOverInitialZoom,
|
|
|
+
|
|
|
+ _isEqualPoints = function(p1, p2) {
|
|
|
+ return p1.x === p2.x && p1.y === p2.y;
|
|
|
+ },
|
|
|
+ _isNearbyPoints = function(touch0, touch1) {
|
|
|
+ return Math.abs(touch0.x - touch1.x) < DOUBLE_TAP_RADIUS && Math.abs(touch0.y - touch1.y) < DOUBLE_TAP_RADIUS;
|
|
|
+ },
|
|
|
+ _calculatePointsDistance = function(p1, p2) {
|
|
|
+ _tempPoint.x = Math.abs( p1.x - p2.x );
|
|
|
+ _tempPoint.y = Math.abs( p1.y - p2.y );
|
|
|
+ return Math.sqrt(_tempPoint.x * _tempPoint.x + _tempPoint.y * _tempPoint.y);
|
|
|
+ },
|
|
|
+ _stopDragUpdateLoop = function() {
|
|
|
+ if(_dragAnimFrame) {
|
|
|
+ _cancelAF(_dragAnimFrame);
|
|
|
+ _dragAnimFrame = null;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _dragUpdateLoop = function() {
|
|
|
+ if(_isDragging) {
|
|
|
+ _dragAnimFrame = _requestAF(_dragUpdateLoop);
|
|
|
+ _renderMovement();
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _canPan = function() {
|
|
|
+ return !(_options.scaleMode === 'fit' && _currZoomLevel === self.currItem.initialZoomLevel);
|
|
|
+ },
|
|
|
+
|
|
|
+ // find the closest parent DOM element
|
|
|
+ _closestElement = function(el, fn) {
|
|
|
+ if(!el || el === document) {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ // don't search elements above pswp__scroll-wrap
|
|
|
+ if(el.getAttribute('class') && el.getAttribute('class').indexOf('pswp__scroll-wrap') > -1 ) {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+
|
|
|
+ if( fn(el) ) {
|
|
|
+ return el;
|
|
|
+ }
|
|
|
+
|
|
|
+ return _closestElement(el.parentNode, fn);
|
|
|
+ },
|
|
|
+
|
|
|
+ _preventObj = {},
|
|
|
+ _preventDefaultEventBehaviour = function(e, isDown) {
|
|
|
+ _preventObj.prevent = !_closestElement(e.target, _options.isClickableElement);
|
|
|
+
|
|
|
+ _shout('preventDragEvent', e, isDown, _preventObj);
|
|
|
+ return _preventObj.prevent;
|
|
|
+
|
|
|
+ },
|
|
|
+ _convertTouchToPoint = function(touch, p) {
|
|
|
+ p.x = touch.pageX;
|
|
|
+ p.y = touch.pageY;
|
|
|
+ p.id = touch.identifier;
|
|
|
+ return p;
|
|
|
+ },
|
|
|
+ _findCenterOfPoints = function(p1, p2, pCenter) {
|
|
|
+ pCenter.x = (p1.x + p2.x) * 0.5;
|
|
|
+ pCenter.y = (p1.y + p2.y) * 0.5;
|
|
|
+ },
|
|
|
+ _pushPosPoint = function(time, x, y) {
|
|
|
+ if(time - _gestureCheckSpeedTime > 50) {
|
|
|
+ var o = _posPoints.length > 2 ? _posPoints.shift() : {};
|
|
|
+ o.x = x;
|
|
|
+ o.y = y;
|
|
|
+ _posPoints.push(o);
|
|
|
+ _gestureCheckSpeedTime = time;
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ _calculateVerticalDragOpacityRatio = function() {
|
|
|
+ var yOffset = _panOffset.y - self.currItem.initialPosition.y; // difference between initial and current position
|
|
|
+ return 1 - Math.abs( yOffset / (_viewportSize.y / 2) );
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+ // points pool, reused during touch events
|
|
|
+ _ePoint1 = {},
|
|
|
+ _ePoint2 = {},
|
|
|
+ _tempPointsArr = [],
|
|
|
+ _tempCounter,
|
|
|
+ _getTouchPoints = function(e) {
|
|
|
+ // clean up previous points, without recreating array
|
|
|
+ while(_tempPointsArr.length > 0) {
|
|
|
+ _tempPointsArr.pop();
|
|
|
+ }
|
|
|
+
|
|
|
+ if(!_pointerEventEnabled) {
|
|
|
+ if(e.type.indexOf('touch') > -1) {
|
|
|
+
|
|
|
+ if(e.touches && e.touches.length > 0) {
|
|
|
+ _tempPointsArr[0] = _convertTouchToPoint(e.touches[0], _ePoint1);
|
|
|
+ if(e.touches.length > 1) {
|
|
|
+ _tempPointsArr[1] = _convertTouchToPoint(e.touches[1], _ePoint2);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ } else {
|
|
|
+ _ePoint1.x = e.pageX;
|
|
|
+ _ePoint1.y = e.pageY;
|
|
|
+ _ePoint1.id = '';
|
|
|
+ _tempPointsArr[0] = _ePoint1;//_ePoint1;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ _tempCounter = 0;
|
|
|
+ // we can use forEach, as pointer events are supported only in modern browsers
|
|
|
+ _currPointers.forEach(function(p) {
|
|
|
+ if(_tempCounter === 0) {
|
|
|
+ _tempPointsArr[0] = p;
|
|
|
+ } else if(_tempCounter === 1) {
|
|
|
+ _tempPointsArr[1] = p;
|
|
|
+ }
|
|
|
+ _tempCounter++;
|
|
|
+
|
|
|
+ });
|
|
|
+ }
|
|
|
+ return _tempPointsArr;
|
|
|
+ },
|
|
|
+
|
|
|
+ _panOrMoveMainScroll = function(axis, delta) {
|
|
|
+
|
|
|
+ var panFriction,
|
|
|
+ overDiff = 0,
|
|
|
+ newOffset = _panOffset[axis] + delta[axis],
|
|
|
+ startOverDiff,
|
|
|
+ dir = delta[axis] > 0,
|
|
|
+ newMainScrollPosition = _mainScrollPos.x + delta.x,
|
|
|
+ mainScrollDiff = _mainScrollPos.x - _startMainScrollPos.x,
|
|
|
+ newPanPos,
|
|
|
+ newMainScrollPos;
|
|
|
+
|
|
|
+ // calculate fdistance over the bounds and friction
|
|
|
+ if(newOffset > _currPanBounds.min[axis] || newOffset < _currPanBounds.max[axis]) {
|
|
|
+ panFriction = _options.panEndFriction;
|
|
|
+ // Linear increasing of friction, so at 1/4 of viewport it's at max value.
|
|
|
+ // Looks not as nice as was expected. Left for history.
|
|
|
+ // panFriction = (1 - (_panOffset[axis] + delta[axis] + panBounds.min[axis]) / (_viewportSize[axis] / 4) );
|
|
|
+ } else {
|
|
|
+ panFriction = 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ newOffset = _panOffset[axis] + delta[axis] * panFriction;
|
|
|
+
|
|
|
+ // move main scroll or start panning
|
|
|
+ if(_options.allowPanToNext || _currZoomLevel === self.currItem.initialZoomLevel) {
|
|
|
+
|
|
|
+
|
|
|
+ if(!_currZoomElementStyle) {
|
|
|
+
|
|
|
+ newMainScrollPos = newMainScrollPosition;
|
|
|
+
|
|
|
+ } else if(_direction === 'h' && axis === 'x' && !_zoomStarted ) {
|
|
|
+
|
|
|
+ if(dir) {
|
|
|
+ if(newOffset > _currPanBounds.min[axis]) {
|
|
|
+ panFriction = _options.panEndFriction;
|
|
|
+ overDiff = _currPanBounds.min[axis] - newOffset;
|
|
|
+ startOverDiff = _currPanBounds.min[axis] - _startPanOffset[axis];
|
|
|
+ }
|
|
|
+
|
|
|
+ // drag right
|
|
|
+ if( (startOverDiff <= 0 || mainScrollDiff < 0) && _getNumItems() > 1 ) {
|
|
|
+ newMainScrollPos = newMainScrollPosition;
|
|
|
+ if(mainScrollDiff < 0 && newMainScrollPosition > _startMainScrollPos.x) {
|
|
|
+ newMainScrollPos = _startMainScrollPos.x;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ if(_currPanBounds.min.x !== _currPanBounds.max.x) {
|
|
|
+ newPanPos = newOffset;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ } else {
|
|
|
+
|
|
|
+ if(newOffset < _currPanBounds.max[axis] ) {
|
|
|
+ panFriction =_options.panEndFriction;
|
|
|
+ overDiff = newOffset - _currPanBounds.max[axis];
|
|
|
+ startOverDiff = _startPanOffset[axis] - _currPanBounds.max[axis];
|
|
|
+ }
|
|
|
+
|
|
|
+ if( (startOverDiff <= 0 || mainScrollDiff > 0) && _getNumItems() > 1 ) {
|
|
|
+ newMainScrollPos = newMainScrollPosition;
|
|
|
+
|
|
|
+ if(mainScrollDiff > 0 && newMainScrollPosition < _startMainScrollPos.x) {
|
|
|
+ newMainScrollPos = _startMainScrollPos.x;
|
|
|
+ }
|
|
|
+
|
|
|
+ } else {
|
|
|
+ if(_currPanBounds.min.x !== _currPanBounds.max.x) {
|
|
|
+ newPanPos = newOffset;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ //
|
|
|
+ }
|
|
|
+
|
|
|
+ if(axis === 'x') {
|
|
|
+
|
|
|
+ if(newMainScrollPos !== undefined) {
|
|
|
+ _moveMainScroll(newMainScrollPos, true);
|
|
|
+ if(newMainScrollPos === _startMainScrollPos.x) {
|
|
|
+ _mainScrollShifted = false;
|
|
|
+ } else {
|
|
|
+ _mainScrollShifted = true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_currPanBounds.min.x !== _currPanBounds.max.x) {
|
|
|
+ if(newPanPos !== undefined) {
|
|
|
+ _panOffset.x = newPanPos;
|
|
|
+ } else if(!_mainScrollShifted) {
|
|
|
+ _panOffset.x += delta.x * panFriction;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return newMainScrollPos !== undefined;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ if(!_mainScrollAnimating) {
|
|
|
+
|
|
|
+ if(!_mainScrollShifted) {
|
|
|
+ if(_currZoomLevel > self.currItem.fitRatio) {
|
|
|
+ _panOffset[axis] += delta[axis] * panFriction;
|
|
|
+
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ },
|
|
|
+
|
|
|
+ // Pointerdown/touchstart/mousedown handler
|
|
|
+ _onDragStart = function(e) {
|
|
|
+
|
|
|
+ // Allow dragging only via left mouse button.
|
|
|
+ // As this handler is not added in IE8 - we ignore e.which
|
|
|
+ //
|
|
|
+ // http://www.quirksmode.org/js/events_properties.html
|
|
|
+ // https://developer.mozilla.org/en-US/docs/Web/API/event.button
|
|
|
+ if(e.type === 'mousedown' && e.button > 0 ) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_initialZoomRunning) {
|
|
|
+ e.preventDefault();
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_oldAndroidTouchEndTimeout && e.type === 'mousedown') {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_preventDefaultEventBehaviour(e, true)) {
|
|
|
+ e.preventDefault();
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ _shout('pointerDown');
|
|
|
+
|
|
|
+ if(_pointerEventEnabled) {
|
|
|
+ var pointerIndex = framework.arraySearch(_currPointers, e.pointerId, 'id');
|
|
|
+ if(pointerIndex < 0) {
|
|
|
+ pointerIndex = _currPointers.length;
|
|
|
+ }
|
|
|
+ _currPointers[pointerIndex] = {x:e.pageX, y:e.pageY, id: e.pointerId};
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ var startPointsList = _getTouchPoints(e),
|
|
|
+ numPoints = startPointsList.length;
|
|
|
+
|
|
|
+ _currentPoints = null;
|
|
|
+
|
|
|
+ _stopAllAnimations();
|
|
|
+
|
|
|
+ // init drag
|
|
|
+ if(!_isDragging || numPoints === 1) {
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ _isDragging = _isFirstMove = true;
|
|
|
+ framework.bind(window, _upMoveEvents, self);
|
|
|
+
|
|
|
+ _isZoomingIn =
|
|
|
+ _wasOverInitialZoom =
|
|
|
+ _opacityChanged =
|
|
|
+ _verticalDragInitiated =
|
|
|
+ _mainScrollShifted =
|
|
|
+ _moved =
|
|
|
+ _isMultitouch =
|
|
|
+ _zoomStarted = false;
|
|
|
+
|
|
|
+ _direction = null;
|
|
|
+
|
|
|
+ _shout('firstTouchStart', startPointsList);
|
|
|
+
|
|
|
+ _equalizePoints(_startPanOffset, _panOffset);
|
|
|
+
|
|
|
+ _currPanDist.x = _currPanDist.y = 0;
|
|
|
+ _equalizePoints(_currPoint, startPointsList[0]);
|
|
|
+ _equalizePoints(_startPoint, _currPoint);
|
|
|
+
|
|
|
+ //_equalizePoints(_startMainScrollPos, _mainScrollPos);
|
|
|
+ _startMainScrollPos.x = _slideSize.x * _currPositionIndex;
|
|
|
+
|
|
|
+ _posPoints = [{
|
|
|
+ x: _currPoint.x,
|
|
|
+ y: _currPoint.y
|
|
|
+ }];
|
|
|
+
|
|
|
+ _gestureCheckSpeedTime = _gestureStartTime = _getCurrentTime();
|
|
|
+
|
|
|
+ //_mainScrollAnimationEnd(true);
|
|
|
+ _calculatePanBounds( _currZoomLevel, true );
|
|
|
+
|
|
|
+ // Start rendering
|
|
|
+ _stopDragUpdateLoop();
|
|
|
+ _dragUpdateLoop();
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ // init zoom
|
|
|
+ if(!_isZooming && numPoints > 1 && !_mainScrollAnimating && !_mainScrollShifted) {
|
|
|
+ _startZoomLevel = _currZoomLevel;
|
|
|
+ _zoomStarted = false; // true if zoom changed at least once
|
|
|
+
|
|
|
+ _isZooming = _isMultitouch = true;
|
|
|
+ _currPanDist.y = _currPanDist.x = 0;
|
|
|
+
|
|
|
+ _equalizePoints(_startPanOffset, _panOffset);
|
|
|
+
|
|
|
+ _equalizePoints(p, startPointsList[0]);
|
|
|
+ _equalizePoints(p2, startPointsList[1]);
|
|
|
+
|
|
|
+ _findCenterOfPoints(p, p2, _currCenterPoint);
|
|
|
+
|
|
|
+ _midZoomPoint.x = Math.abs(_currCenterPoint.x) - _panOffset.x;
|
|
|
+ _midZoomPoint.y = Math.abs(_currCenterPoint.y) - _panOffset.y;
|
|
|
+ _currPointsDistance = _startPointsDistance = _calculatePointsDistance(p, p2);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ },
|
|
|
+
|
|
|
+ // Pointermove/touchmove/mousemove handler
|
|
|
+ _onDragMove = function(e) {
|
|
|
+
|
|
|
+ e.preventDefault();
|
|
|
+
|
|
|
+ if(_pointerEventEnabled) {
|
|
|
+ var pointerIndex = framework.arraySearch(_currPointers, e.pointerId, 'id');
|
|
|
+ if(pointerIndex > -1) {
|
|
|
+ var p = _currPointers[pointerIndex];
|
|
|
+ p.x = e.pageX;
|
|
|
+ p.y = e.pageY;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_isDragging) {
|
|
|
+ var touchesList = _getTouchPoints(e);
|
|
|
+ if(!_direction && !_moved && !_isZooming) {
|
|
|
+
|
|
|
+ if(_mainScrollPos.x !== _slideSize.x * _currPositionIndex) {
|
|
|
+ // if main scroll position is shifted – direction is always horizontal
|
|
|
+ _direction = 'h';
|
|
|
+ } else {
|
|
|
+ var diff = Math.abs(touchesList[0].x - _currPoint.x) - Math.abs(touchesList[0].y - _currPoint.y);
|
|
|
+ // check the direction of movement
|
|
|
+ if(Math.abs(diff) >= DIRECTION_CHECK_OFFSET) {
|
|
|
+ _direction = diff > 0 ? 'h' : 'v';
|
|
|
+ _currentPoints = touchesList;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ } else {
|
|
|
+ _currentPoints = touchesList;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ },
|
|
|
+ //
|
|
|
+ _renderMovement = function() {
|
|
|
+
|
|
|
+ if(!_currentPoints) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ var numPoints = _currentPoints.length;
|
|
|
+
|
|
|
+ if(numPoints === 0) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ _equalizePoints(p, _currentPoints[0]);
|
|
|
+
|
|
|
+ delta.x = p.x - _currPoint.x;
|
|
|
+ delta.y = p.y - _currPoint.y;
|
|
|
+
|
|
|
+ if(_isZooming && numPoints > 1) {
|
|
|
+ // Handle behaviour for more than 1 point
|
|
|
+
|
|
|
+ _currPoint.x = p.x;
|
|
|
+ _currPoint.y = p.y;
|
|
|
+
|
|
|
+ // check if one of two points changed
|
|
|
+ if( !delta.x && !delta.y && _isEqualPoints(_currentPoints[1], p2) ) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ _equalizePoints(p2, _currentPoints[1]);
|
|
|
+
|
|
|
+
|
|
|
+ if(!_zoomStarted) {
|
|
|
+ _zoomStarted = true;
|
|
|
+ _shout('zoomGestureStarted');
|
|
|
+ }
|
|
|
+
|
|
|
+ // Distance between two points
|
|
|
+ var pointsDistance = _calculatePointsDistance(p,p2);
|
|
|
+
|
|
|
+ var zoomLevel = _calculateZoomLevel(pointsDistance);
|
|
|
+
|
|
|
+ // slightly over the of initial zoom level
|
|
|
+ if(zoomLevel > self.currItem.initialZoomLevel + self.currItem.initialZoomLevel / 15) {
|
|
|
+ _wasOverInitialZoom = true;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Apply the friction if zoom level is out of the bounds
|
|
|
+ var zoomFriction = 1,
|
|
|
+ minZoomLevel = _getMinZoomLevel(),
|
|
|
+ maxZoomLevel = _getMaxZoomLevel();
|
|
|
+
|
|
|
+ if ( zoomLevel < minZoomLevel ) {
|
|
|
+
|
|
|
+ if(_options.pinchToClose && !_wasOverInitialZoom && _startZoomLevel <= self.currItem.initialZoomLevel) {
|
|
|
+ // fade out background if zooming out
|
|
|
+ var minusDiff = minZoomLevel - zoomLevel;
|
|
|
+ var percent = 1 - minusDiff / (minZoomLevel / 1.2);
|
|
|
+
|
|
|
+ _applyBgOpacity(percent);
|
|
|
+ _shout('onPinchClose', percent);
|
|
|
+ _opacityChanged = true;
|
|
|
+ } else {
|
|
|
+ zoomFriction = (minZoomLevel - zoomLevel) / minZoomLevel;
|
|
|
+ if(zoomFriction > 1) {
|
|
|
+ zoomFriction = 1;
|
|
|
+ }
|
|
|
+ zoomLevel = minZoomLevel - zoomFriction * (minZoomLevel / 3);
|
|
|
+ }
|
|
|
+
|
|
|
+ } else if ( zoomLevel > maxZoomLevel ) {
|
|
|
+ // 1.5 - extra zoom level above the max. E.g. if max is x6, real max 6 + 1.5 = 7.5
|
|
|
+ zoomFriction = (zoomLevel - maxZoomLevel) / ( minZoomLevel * 6 );
|
|
|
+ if(zoomFriction > 1) {
|
|
|
+ zoomFriction = 1;
|
|
|
+ }
|
|
|
+ zoomLevel = maxZoomLevel + zoomFriction * minZoomLevel;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(zoomFriction < 0) {
|
|
|
+ zoomFriction = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ // distance between touch points after friction is applied
|
|
|
+ _currPointsDistance = pointsDistance;
|
|
|
+
|
|
|
+ // _centerPoint - The point in the middle of two pointers
|
|
|
+ _findCenterOfPoints(p, p2, _centerPoint);
|
|
|
+
|
|
|
+ // paning with two pointers pressed
|
|
|
+ _currPanDist.x += _centerPoint.x - _currCenterPoint.x;
|
|
|
+ _currPanDist.y += _centerPoint.y - _currCenterPoint.y;
|
|
|
+ _equalizePoints(_currCenterPoint, _centerPoint);
|
|
|
+
|
|
|
+ _panOffset.x = _calculatePanOffset('x', zoomLevel);
|
|
|
+ _panOffset.y = _calculatePanOffset('y', zoomLevel);
|
|
|
+
|
|
|
+ _isZoomingIn = zoomLevel > _currZoomLevel;
|
|
|
+ _currZoomLevel = zoomLevel;
|
|
|
+ _applyCurrentZoomPan();
|
|
|
+
|
|
|
+ } else {
|
|
|
+
|
|
|
+ // handle behaviour for one point (dragging or panning)
|
|
|
+
|
|
|
+ if(!_direction) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_isFirstMove) {
|
|
|
+ _isFirstMove = false;
|
|
|
+
|
|
|
+ // subtract drag distance that was used during the detection direction
|
|
|
+
|
|
|
+ if( Math.abs(delta.x) >= DIRECTION_CHECK_OFFSET) {
|
|
|
+ delta.x -= _currentPoints[0].x - _startPoint.x;
|
|
|
+ }
|
|
|
+
|
|
|
+ if( Math.abs(delta.y) >= DIRECTION_CHECK_OFFSET) {
|
|
|
+ delta.y -= _currentPoints[0].y - _startPoint.y;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ _currPoint.x = p.x;
|
|
|
+ _currPoint.y = p.y;
|
|
|
+
|
|
|
+ // do nothing if pointers position hasn't changed
|
|
|
+ if(delta.x === 0 && delta.y === 0) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_direction === 'v' && _options.closeOnVerticalDrag) {
|
|
|
+ if(!_canPan()) {
|
|
|
+ _currPanDist.y += delta.y;
|
|
|
+ _panOffset.y += delta.y;
|
|
|
+
|
|
|
+ var opacityRatio = _calculateVerticalDragOpacityRatio();
|
|
|
+
|
|
|
+ _verticalDragInitiated = true;
|
|
|
+ _shout('onVerticalDrag', opacityRatio);
|
|
|
+
|
|
|
+ _applyBgOpacity(opacityRatio);
|
|
|
+ _applyCurrentZoomPan();
|
|
|
+ return ;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ _pushPosPoint(_getCurrentTime(), p.x, p.y);
|
|
|
+
|
|
|
+ _moved = true;
|
|
|
+ _currPanBounds = self.currItem.bounds;
|
|
|
+
|
|
|
+ var mainScrollChanged = _panOrMoveMainScroll('x', delta);
|
|
|
+ if(!mainScrollChanged) {
|
|
|
+ _panOrMoveMainScroll('y', delta);
|
|
|
+
|
|
|
+ _roundPoint(_panOffset);
|
|
|
+ _applyCurrentZoomPan();
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ },
|
|
|
+
|
|
|
+ // Pointerup/pointercancel/touchend/touchcancel/mouseup event handler
|
|
|
+ _onDragRelease = function(e) {
|
|
|
+
|
|
|
+ if(_features.isOldAndroid ) {
|
|
|
+
|
|
|
+ if(_oldAndroidTouchEndTimeout && e.type === 'mouseup') {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ // on Android (v4.1, 4.2, 4.3 & possibly older)
|
|
|
+ // ghost mousedown/up event isn't preventable via e.preventDefault,
|
|
|
+ // which causes fake mousedown event
|
|
|
+ // so we block mousedown/up for 600ms
|
|
|
+ if( e.type.indexOf('touch') > -1 ) {
|
|
|
+ clearTimeout(_oldAndroidTouchEndTimeout);
|
|
|
+ _oldAndroidTouchEndTimeout = setTimeout(function() {
|
|
|
+ _oldAndroidTouchEndTimeout = 0;
|
|
|
+ }, 600);
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ _shout('pointerUp');
|
|
|
+
|
|
|
+ if(_preventDefaultEventBehaviour(e, false)) {
|
|
|
+ e.preventDefault();
|
|
|
+ }
|
|
|
+
|
|
|
+ var releasePoint;
|
|
|
+
|
|
|
+ if(_pointerEventEnabled) {
|
|
|
+ var pointerIndex = framework.arraySearch(_currPointers, e.pointerId, 'id');
|
|
|
+
|
|
|
+ if(pointerIndex > -1) {
|
|
|
+ releasePoint = _currPointers.splice(pointerIndex, 1)[0];
|
|
|
+
|
|
|
+ if(navigator.pointerEnabled) {
|
|
|
+ releasePoint.type = e.pointerType || 'mouse';
|
|
|
+ } else {
|
|
|
+ var MSPOINTER_TYPES = {
|
|
|
+ 4: 'mouse', // event.MSPOINTER_TYPE_MOUSE
|
|
|
+ 2: 'touch', // event.MSPOINTER_TYPE_TOUCH
|
|
|
+ 3: 'pen' // event.MSPOINTER_TYPE_PEN
|
|
|
+ };
|
|
|
+ releasePoint.type = MSPOINTER_TYPES[e.pointerType];
|
|
|
+
|
|
|
+ if(!releasePoint.type) {
|
|
|
+ releasePoint.type = e.pointerType || 'mouse';
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ var touchList = _getTouchPoints(e),
|
|
|
+ gestureType,
|
|
|
+ numPoints = touchList.length;
|
|
|
+
|
|
|
+ if(e.type === 'mouseup') {
|
|
|
+ numPoints = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Do nothing if there were 3 touch points or more
|
|
|
+ if(numPoints === 2) {
|
|
|
+ _currentPoints = null;
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ // if second pointer released
|
|
|
+ if(numPoints === 1) {
|
|
|
+ _equalizePoints(_startPoint, touchList[0]);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ // pointer hasn't moved, send "tap release" point
|
|
|
+ if(numPoints === 0 && !_direction && !_mainScrollAnimating) {
|
|
|
+ if(!releasePoint) {
|
|
|
+ if(e.type === 'mouseup') {
|
|
|
+ releasePoint = {x: e.pageX, y: e.pageY, type:'mouse'};
|
|
|
+ } else if(e.changedTouches && e.changedTouches[0]) {
|
|
|
+ releasePoint = {x: e.changedTouches[0].pageX, y: e.changedTouches[0].pageY, type:'touch'};
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ _shout('touchRelease', e, releasePoint);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Difference in time between releasing of two last touch points (zoom gesture)
|
|
|
+ var releaseTimeDiff = -1;
|
|
|
+
|
|
|
+ // Gesture completed, no pointers left
|
|
|
+ if(numPoints === 0) {
|
|
|
+ _isDragging = false;
|
|
|
+ framework.unbind(window, _upMoveEvents, self);
|
|
|
+
|
|
|
+ _stopDragUpdateLoop();
|
|
|
+
|
|
|
+ if(_isZooming) {
|
|
|
+ // Two points released at the same time
|
|
|
+ releaseTimeDiff = 0;
|
|
|
+ } else if(_lastReleaseTime !== -1) {
|
|
|
+ releaseTimeDiff = _getCurrentTime() - _lastReleaseTime;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ _lastReleaseTime = numPoints === 1 ? _getCurrentTime() : -1;
|
|
|
+
|
|
|
+ if(releaseTimeDiff !== -1 && releaseTimeDiff < 150) {
|
|
|
+ gestureType = 'zoom';
|
|
|
+ } else {
|
|
|
+ gestureType = 'swipe';
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_isZooming && numPoints < 2) {
|
|
|
+ _isZooming = false;
|
|
|
+
|
|
|
+ // Only second point released
|
|
|
+ if(numPoints === 1) {
|
|
|
+ gestureType = 'zoomPointerUp';
|
|
|
+ }
|
|
|
+ _shout('zoomGestureEnded');
|
|
|
+ }
|
|
|
+
|
|
|
+ _currentPoints = null;
|
|
|
+ if(!_moved && !_zoomStarted && !_mainScrollAnimating && !_verticalDragInitiated) {
|
|
|
+ // nothing to animate
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ _stopAllAnimations();
|
|
|
+
|
|
|
+
|
|
|
+ if(!_releaseAnimData) {
|
|
|
+ _releaseAnimData = _initDragReleaseAnimationData();
|
|
|
+ }
|
|
|
+
|
|
|
+ _releaseAnimData.calculateSwipeSpeed('x');
|
|
|
+
|
|
|
+
|
|
|
+ if(_verticalDragInitiated) {
|
|
|
+
|
|
|
+ var opacityRatio = _calculateVerticalDragOpacityRatio();
|
|
|
+
|
|
|
+ if(opacityRatio < _options.verticalDragRange) {
|
|
|
+ self.close();
|
|
|
+ } else {
|
|
|
+ var initalPanY = _panOffset.y,
|
|
|
+ initialBgOpacity = _bgOpacity;
|
|
|
+
|
|
|
+ _animateProp('verticalDrag', 0, 1, 300, framework.easing.cubic.out, function(now) {
|
|
|
+
|
|
|
+ _panOffset.y = (self.currItem.initialPosition.y - initalPanY) * now + initalPanY;
|
|
|
+
|
|
|
+ _applyBgOpacity( (1 - initialBgOpacity) * now + initialBgOpacity );
|
|
|
+ _applyCurrentZoomPan();
|
|
|
+ });
|
|
|
+
|
|
|
+ _shout('onVerticalDrag', 1);
|
|
|
+ }
|
|
|
+
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ // main scroll
|
|
|
+ if( (_mainScrollShifted || _mainScrollAnimating) && numPoints === 0) {
|
|
|
+ var itemChanged = _finishSwipeMainScrollGesture(gestureType, _releaseAnimData);
|
|
|
+ if(itemChanged) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ gestureType = 'zoomPointerUp';
|
|
|
+ }
|
|
|
+
|
|
|
+ // prevent zoom/pan animation when main scroll animation runs
|
|
|
+ if(_mainScrollAnimating) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Complete simple zoom gesture (reset zoom level if it's out of the bounds)
|
|
|
+ if(gestureType !== 'swipe') {
|
|
|
+ _completeZoomGesture();
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Complete pan gesture if main scroll is not shifted, and it's possible to pan current image
|
|
|
+ if(!_mainScrollShifted && _currZoomLevel > self.currItem.fitRatio) {
|
|
|
+ _completePanGesture(_releaseAnimData);
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+ // Returns object with data about gesture
|
|
|
+ // It's created only once and then reused
|
|
|
+ _initDragReleaseAnimationData = function() {
|
|
|
+ // temp local vars
|
|
|
+ var lastFlickDuration,
|
|
|
+ tempReleasePos;
|
|
|
+
|
|
|
+ // s = this
|
|
|
+ var s = {
|
|
|
+ lastFlickOffset: {},
|
|
|
+ lastFlickDist: {},
|
|
|
+ lastFlickSpeed: {},
|
|
|
+ slowDownRatio: {},
|
|
|
+ slowDownRatioReverse: {},
|
|
|
+ speedDecelerationRatio: {},
|
|
|
+ speedDecelerationRatioAbs: {},
|
|
|
+ distanceOffset: {},
|
|
|
+ backAnimDestination: {},
|
|
|
+ backAnimStarted: {},
|
|
|
+ calculateSwipeSpeed: function(axis) {
|
|
|
+
|
|
|
+
|
|
|
+ if( _posPoints.length > 1) {
|
|
|
+ lastFlickDuration = _getCurrentTime() - _gestureCheckSpeedTime + 50;
|
|
|
+ tempReleasePos = _posPoints[_posPoints.length-2][axis];
|
|
|
+ } else {
|
|
|
+ lastFlickDuration = _getCurrentTime() - _gestureStartTime; // total gesture duration
|
|
|
+ tempReleasePos = _startPoint[axis];
|
|
|
+ }
|
|
|
+ s.lastFlickOffset[axis] = _currPoint[axis] - tempReleasePos;
|
|
|
+ s.lastFlickDist[axis] = Math.abs(s.lastFlickOffset[axis]);
|
|
|
+ if(s.lastFlickDist[axis] > 20) {
|
|
|
+ s.lastFlickSpeed[axis] = s.lastFlickOffset[axis] / lastFlickDuration;
|
|
|
+ } else {
|
|
|
+ s.lastFlickSpeed[axis] = 0;
|
|
|
+ }
|
|
|
+ if( Math.abs(s.lastFlickSpeed[axis]) < 0.1 ) {
|
|
|
+ s.lastFlickSpeed[axis] = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ s.slowDownRatio[axis] = 0.95;
|
|
|
+ s.slowDownRatioReverse[axis] = 1 - s.slowDownRatio[axis];
|
|
|
+ s.speedDecelerationRatio[axis] = 1;
|
|
|
+ },
|
|
|
+
|
|
|
+ calculateOverBoundsAnimOffset: function(axis, speed) {
|
|
|
+ if(!s.backAnimStarted[axis]) {
|
|
|
+
|
|
|
+ if(_panOffset[axis] > _currPanBounds.min[axis]) {
|
|
|
+ s.backAnimDestination[axis] = _currPanBounds.min[axis];
|
|
|
+
|
|
|
+ } else if(_panOffset[axis] < _currPanBounds.max[axis]) {
|
|
|
+ s.backAnimDestination[axis] = _currPanBounds.max[axis];
|
|
|
+ }
|
|
|
+
|
|
|
+ if(s.backAnimDestination[axis] !== undefined) {
|
|
|
+ s.slowDownRatio[axis] = 0.7;
|
|
|
+ s.slowDownRatioReverse[axis] = 1 - s.slowDownRatio[axis];
|
|
|
+ if(s.speedDecelerationRatioAbs[axis] < 0.05) {
|
|
|
+
|
|
|
+ s.lastFlickSpeed[axis] = 0;
|
|
|
+ s.backAnimStarted[axis] = true;
|
|
|
+
|
|
|
+ _animateProp('bounceZoomPan'+axis,_panOffset[axis],
|
|
|
+ s.backAnimDestination[axis],
|
|
|
+ speed || 300,
|
|
|
+ framework.easing.sine.out,
|
|
|
+ function(pos) {
|
|
|
+ _panOffset[axis] = pos;
|
|
|
+ _applyCurrentZoomPan();
|
|
|
+ }
|
|
|
+ );
|
|
|
+
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ // Reduces the speed by slowDownRatio (per 10ms)
|
|
|
+ calculateAnimOffset: function(axis) {
|
|
|
+ if(!s.backAnimStarted[axis]) {
|
|
|
+ s.speedDecelerationRatio[axis] = s.speedDecelerationRatio[axis] * (s.slowDownRatio[axis] +
|
|
|
+ s.slowDownRatioReverse[axis] -
|
|
|
+ s.slowDownRatioReverse[axis] * s.timeDiff / 10);
|
|
|
+
|
|
|
+ s.speedDecelerationRatioAbs[axis] = Math.abs(s.lastFlickSpeed[axis] * s.speedDecelerationRatio[axis]);
|
|
|
+ s.distanceOffset[axis] = s.lastFlickSpeed[axis] * s.speedDecelerationRatio[axis] * s.timeDiff;
|
|
|
+ _panOffset[axis] += s.distanceOffset[axis];
|
|
|
+
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ panAnimLoop: function() {
|
|
|
+ if ( _animations.zoomPan ) {
|
|
|
+ _animations.zoomPan.raf = _requestAF(s.panAnimLoop);
|
|
|
+
|
|
|
+ s.now = _getCurrentTime();
|
|
|
+ s.timeDiff = s.now - s.lastNow;
|
|
|
+ s.lastNow = s.now;
|
|
|
+
|
|
|
+ s.calculateAnimOffset('x');
|
|
|
+ s.calculateAnimOffset('y');
|
|
|
+
|
|
|
+ _applyCurrentZoomPan();
|
|
|
+
|
|
|
+ s.calculateOverBoundsAnimOffset('x');
|
|
|
+ s.calculateOverBoundsAnimOffset('y');
|
|
|
+
|
|
|
+
|
|
|
+ if (s.speedDecelerationRatioAbs.x < 0.05 && s.speedDecelerationRatioAbs.y < 0.05) {
|
|
|
+
|
|
|
+ // round pan position
|
|
|
+ _panOffset.x = Math.round(_panOffset.x);
|
|
|
+ _panOffset.y = Math.round(_panOffset.y);
|
|
|
+ _applyCurrentZoomPan();
|
|
|
+
|
|
|
+ _stopAnimation('zoomPan');
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+ };
|
|
|
+ return s;
|
|
|
+ },
|
|
|
+
|
|
|
+ _completePanGesture = function(animData) {
|
|
|
+ // calculate swipe speed for Y axis (paanning)
|
|
|
+ animData.calculateSwipeSpeed('y');
|
|
|
+
|
|
|
+ _currPanBounds = self.currItem.bounds;
|
|
|
+
|
|
|
+ animData.backAnimDestination = {};
|
|
|
+ animData.backAnimStarted = {};
|
|
|
+
|
|
|
+ // Avoid acceleration animation if speed is too low
|
|
|
+ if(Math.abs(animData.lastFlickSpeed.x) <= 0.05 && Math.abs(animData.lastFlickSpeed.y) <= 0.05 ) {
|
|
|
+ animData.speedDecelerationRatioAbs.x = animData.speedDecelerationRatioAbs.y = 0;
|
|
|
+
|
|
|
+ // Run pan drag release animation. E.g. if you drag image and release finger without momentum.
|
|
|
+ animData.calculateOverBoundsAnimOffset('x');
|
|
|
+ animData.calculateOverBoundsAnimOffset('y');
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Animation loop that controls the acceleration after pan gesture ends
|
|
|
+ _registerStartAnimation('zoomPan');
|
|
|
+ animData.lastNow = _getCurrentTime();
|
|
|
+ animData.panAnimLoop();
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+ _finishSwipeMainScrollGesture = function(gestureType, _releaseAnimData) {
|
|
|
+ var itemChanged;
|
|
|
+ if(!_mainScrollAnimating) {
|
|
|
+ _currZoomedItemIndex = _currentItemIndex;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ var itemsDiff;
|
|
|
+
|
|
|
+ if(gestureType === 'swipe') {
|
|
|
+ var totalShiftDist = _currPoint.x - _startPoint.x,
|
|
|
+ isFastLastFlick = _releaseAnimData.lastFlickDist.x < 10;
|
|
|
+
|
|
|
+ // if container is shifted for more than MIN_SWIPE_DISTANCE,
|
|
|
+ // and last flick gesture was in right direction
|
|
|
+ if(totalShiftDist > MIN_SWIPE_DISTANCE &&
|
|
|
+ (isFastLastFlick || _releaseAnimData.lastFlickOffset.x > 20) ) {
|
|
|
+ // go to prev item
|
|
|
+ itemsDiff = -1;
|
|
|
+ } else if(totalShiftDist < -MIN_SWIPE_DISTANCE &&
|
|
|
+ (isFastLastFlick || _releaseAnimData.lastFlickOffset.x < -20) ) {
|
|
|
+ // go to next item
|
|
|
+ itemsDiff = 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ var nextCircle;
|
|
|
+
|
|
|
+ if(itemsDiff) {
|
|
|
+
|
|
|
+ _currentItemIndex += itemsDiff;
|
|
|
+
|
|
|
+ if(_currentItemIndex < 0) {
|
|
|
+ _currentItemIndex = _options.loop ? _getNumItems()-1 : 0;
|
|
|
+ nextCircle = true;
|
|
|
+ } else if(_currentItemIndex >= _getNumItems()) {
|
|
|
+ _currentItemIndex = _options.loop ? 0 : _getNumItems()-1;
|
|
|
+ nextCircle = true;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(!nextCircle || _options.loop) {
|
|
|
+ _indexDiff += itemsDiff;
|
|
|
+ _currPositionIndex -= itemsDiff;
|
|
|
+ itemChanged = true;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ var animateToX = _slideSize.x * _currPositionIndex;
|
|
|
+ var animateToDist = Math.abs( animateToX - _mainScrollPos.x );
|
|
|
+ var finishAnimDuration;
|
|
|
+
|
|
|
+
|
|
|
+ if(!itemChanged && animateToX > _mainScrollPos.x !== _releaseAnimData.lastFlickSpeed.x > 0) {
|
|
|
+ // "return to current" duration, e.g. when dragging from slide 0 to -1
|
|
|
+ finishAnimDuration = 333;
|
|
|
+ } else {
|
|
|
+ finishAnimDuration = Math.abs(_releaseAnimData.lastFlickSpeed.x) > 0 ?
|
|
|
+ animateToDist / Math.abs(_releaseAnimData.lastFlickSpeed.x) :
|
|
|
+ 333;
|
|
|
+
|
|
|
+ finishAnimDuration = Math.min(finishAnimDuration, 400);
|
|
|
+ finishAnimDuration = Math.max(finishAnimDuration, 250);
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_currZoomedItemIndex === _currentItemIndex) {
|
|
|
+ itemChanged = false;
|
|
|
+ }
|
|
|
+
|
|
|
+ _mainScrollAnimating = true;
|
|
|
+
|
|
|
+ _shout('mainScrollAnimStart');
|
|
|
+
|
|
|
+ _animateProp('mainScroll', _mainScrollPos.x, animateToX, finishAnimDuration, framework.easing.cubic.out,
|
|
|
+ _moveMainScroll,
|
|
|
+ function() {
|
|
|
+ _stopAllAnimations();
|
|
|
+ _mainScrollAnimating = false;
|
|
|
+ _currZoomedItemIndex = -1;
|
|
|
+
|
|
|
+ if(itemChanged || _currZoomedItemIndex !== _currentItemIndex) {
|
|
|
+ self.updateCurrItem();
|
|
|
+ }
|
|
|
+
|
|
|
+ _shout('mainScrollAnimComplete');
|
|
|
+ }
|
|
|
+ );
|
|
|
+
|
|
|
+ if(itemChanged) {
|
|
|
+ self.updateCurrItem(true);
|
|
|
+ }
|
|
|
+
|
|
|
+ return itemChanged;
|
|
|
+ },
|
|
|
+
|
|
|
+ _calculateZoomLevel = function(touchesDistance) {
|
|
|
+ return 1 / _startPointsDistance * touchesDistance * _startZoomLevel;
|
|
|
+ },
|
|
|
+
|
|
|
+ // Resets zoom if it's out of bounds
|
|
|
+ _completeZoomGesture = function() {
|
|
|
+ var destZoomLevel = _currZoomLevel,
|
|
|
+ minZoomLevel = _getMinZoomLevel(),
|
|
|
+ maxZoomLevel = _getMaxZoomLevel();
|
|
|
+
|
|
|
+ if ( _currZoomLevel < minZoomLevel ) {
|
|
|
+ destZoomLevel = minZoomLevel;
|
|
|
+ } else if ( _currZoomLevel > maxZoomLevel ) {
|
|
|
+ destZoomLevel = maxZoomLevel;
|
|
|
+ }
|
|
|
+
|
|
|
+ var destOpacity = 1,
|
|
|
+ onUpdate,
|
|
|
+ initialOpacity = _bgOpacity;
|
|
|
+
|
|
|
+ if(_opacityChanged && !_isZoomingIn && !_wasOverInitialZoom && _currZoomLevel < minZoomLevel) {
|
|
|
+ //_closedByScroll = true;
|
|
|
+ self.close();
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_opacityChanged) {
|
|
|
+ onUpdate = function(now) {
|
|
|
+ _applyBgOpacity( (destOpacity - initialOpacity) * now + initialOpacity );
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+ self.zoomTo(destZoomLevel, 0, 200, framework.easing.cubic.out, onUpdate);
|
|
|
+ return true;
|
|
|
+ };
|
|
|
+
|
|
|
+
|
|
|
+_registerModule('Gestures', {
|
|
|
+ publicMethods: {
|
|
|
+
|
|
|
+ initGestures: function() {
|
|
|
+
|
|
|
+ // helper function that builds touch/pointer/mouse events
|
|
|
+ var addEventNames = function(pref, down, move, up, cancel) {
|
|
|
+ _dragStartEvent = pref + down;
|
|
|
+ _dragMoveEvent = pref + move;
|
|
|
+ _dragEndEvent = pref + up;
|
|
|
+ if(cancel) {
|
|
|
+ _dragCancelEvent = pref + cancel;
|
|
|
+ } else {
|
|
|
+ _dragCancelEvent = '';
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+ _pointerEventEnabled = _features.pointerEvent;
|
|
|
+ if(_pointerEventEnabled && _features.touch) {
|
|
|
+ // we don't need touch events, if browser supports pointer events
|
|
|
+ _features.touch = false;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_pointerEventEnabled) {
|
|
|
+ if(navigator.pointerEnabled) {
|
|
|
+ addEventNames('pointer', 'down', 'move', 'up', 'cancel');
|
|
|
+ } else {
|
|
|
+ // IE10 pointer events are case-sensitive
|
|
|
+ addEventNames('MSPointer', 'Down', 'Move', 'Up', 'Cancel');
|
|
|
+ }
|
|
|
+ } else if(_features.touch) {
|
|
|
+ addEventNames('touch', 'start', 'move', 'end', 'cancel');
|
|
|
+ _likelyTouchDevice = true;
|
|
|
+ } else {
|
|
|
+ addEventNames('mouse', 'down', 'move', 'up');
|
|
|
+ }
|
|
|
+
|
|
|
+ _upMoveEvents = _dragMoveEvent + ' ' + _dragEndEvent + ' ' + _dragCancelEvent;
|
|
|
+ _downEvents = _dragStartEvent;
|
|
|
+
|
|
|
+ if(_pointerEventEnabled && !_likelyTouchDevice) {
|
|
|
+ _likelyTouchDevice = (navigator.maxTouchPoints > 1) || (navigator.msMaxTouchPoints > 1);
|
|
|
+ }
|
|
|
+ // make variable public
|
|
|
+ self.likelyTouchDevice = _likelyTouchDevice;
|
|
|
+
|
|
|
+ _globalEventHandlers[_dragStartEvent] = _onDragStart;
|
|
|
+ _globalEventHandlers[_dragMoveEvent] = _onDragMove;
|
|
|
+ _globalEventHandlers[_dragEndEvent] = _onDragRelease; // the Kraken
|
|
|
+
|
|
|
+ if(_dragCancelEvent) {
|
|
|
+ _globalEventHandlers[_dragCancelEvent] = _globalEventHandlers[_dragEndEvent];
|
|
|
+ }
|
|
|
+
|
|
|
+ // Bind mouse events on device with detected hardware touch support, in case it supports multiple types of input.
|
|
|
+ if(_features.touch) {
|
|
|
+ _downEvents += ' mousedown';
|
|
|
+ _upMoveEvents += ' mousemove mouseup';
|
|
|
+ _globalEventHandlers.mousedown = _globalEventHandlers[_dragStartEvent];
|
|
|
+ _globalEventHandlers.mousemove = _globalEventHandlers[_dragMoveEvent];
|
|
|
+ _globalEventHandlers.mouseup = _globalEventHandlers[_dragEndEvent];
|
|
|
+ }
|
|
|
+
|
|
|
+ if(!_likelyTouchDevice) {
|
|
|
+ // don't allow pan to next slide from zoomed state on Desktop
|
|
|
+ _options.allowPanToNext = false;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+});
|
|
|
+
|
|
|
+
|
|
|
+/*>>gestures*/
|
|
|
+
|
|
|
+/*>>show-hide-transition*/
|
|
|
+/**
|
|
|
+ * show-hide-transition.js:
|
|
|
+ *
|
|
|
+ * Manages initial opening or closing transition.
|
|
|
+ *
|
|
|
+ * If you're not planning to use transition for gallery at all,
|
|
|
+ * you may set options hideAnimationDuration and showAnimationDuration to 0,
|
|
|
+ * and just delete startAnimation function.
|
|
|
+ *
|
|
|
+ */
|
|
|
+
|
|
|
+
|
|
|
+var _showOrHideTimeout,
|
|
|
+ _showOrHide = function(item, img, out, completeFn) {
|
|
|
+
|
|
|
+ if(_showOrHideTimeout) {
|
|
|
+ clearTimeout(_showOrHideTimeout);
|
|
|
+ }
|
|
|
+
|
|
|
+ _initialZoomRunning = true;
|
|
|
+ _initialContentSet = true;
|
|
|
+
|
|
|
+ // dimensions of small thumbnail {x:,y:,w:}.
|
|
|
+ // Height is optional, as calculated based on large image.
|
|
|
+ var thumbBounds;
|
|
|
+ if(item.initialLayout) {
|
|
|
+ thumbBounds = item.initialLayout;
|
|
|
+ item.initialLayout = null;
|
|
|
+ } else {
|
|
|
+ thumbBounds = _options.getThumbBoundsFn && _options.getThumbBoundsFn(_currentItemIndex);
|
|
|
+ }
|
|
|
+
|
|
|
+ var duration = out ? _options.hideAnimationDuration : _options.showAnimationDuration;
|
|
|
+
|
|
|
+ var onComplete = function() {
|
|
|
+ _stopAnimation('initialZoom');
|
|
|
+ if(!out) {
|
|
|
+ _applyBgOpacity(1);
|
|
|
+ if(img) {
|
|
|
+ img.style.display = 'block';
|
|
|
+ }
|
|
|
+ framework.addClass(template, 'pswp--animated-in');
|
|
|
+ _shout('initialZoom' + (out ? 'OutEnd' : 'InEnd'));
|
|
|
+ } else {
|
|
|
+ self.template.removeAttribute('style');
|
|
|
+ self.bg.removeAttribute('style');
|
|
|
+ }
|
|
|
+
|
|
|
+ if(completeFn) {
|
|
|
+ completeFn();
|
|
|
+ }
|
|
|
+ _initialZoomRunning = false;
|
|
|
+ };
|
|
|
+
|
|
|
+ // if bounds aren't provided, just open gallery without animation
|
|
|
+ if(!duration || !thumbBounds || thumbBounds.x === undefined) {
|
|
|
+
|
|
|
+ _shout('initialZoom' + (out ? 'Out' : 'In') );
|
|
|
+
|
|
|
+ _currZoomLevel = item.initialZoomLevel;
|
|
|
+ _equalizePoints(_panOffset, item.initialPosition );
|
|
|
+ _applyCurrentZoomPan();
|
|
|
+
|
|
|
+ template.style.opacity = out ? 0 : 1;
|
|
|
+ _applyBgOpacity(1);
|
|
|
+
|
|
|
+ if(duration) {
|
|
|
+ setTimeout(function() {
|
|
|
+ onComplete();
|
|
|
+ }, duration);
|
|
|
+ } else {
|
|
|
+ onComplete();
|
|
|
+ }
|
|
|
+
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ var startAnimation = function() {
|
|
|
+ var closeWithRaf = _closedByScroll,
|
|
|
+ fadeEverything = !self.currItem.src || self.currItem.loadError || _options.showHideOpacity;
|
|
|
+
|
|
|
+ // apply hw-acceleration to image
|
|
|
+ if(item.miniImg) {
|
|
|
+ item.miniImg.style.webkitBackfaceVisibility = 'hidden';
|
|
|
+ }
|
|
|
+
|
|
|
+ if(!out) {
|
|
|
+ _currZoomLevel = thumbBounds.w / item.w;
|
|
|
+ _panOffset.x = thumbBounds.x;
|
|
|
+ _panOffset.y = thumbBounds.y - _initalWindowScrollY;
|
|
|
+
|
|
|
+ self[fadeEverything ? 'template' : 'bg'].style.opacity = 0.001;
|
|
|
+ _applyCurrentZoomPan();
|
|
|
+ }
|
|
|
+
|
|
|
+ _registerStartAnimation('initialZoom');
|
|
|
+
|
|
|
+ if(out && !closeWithRaf) {
|
|
|
+ framework.removeClass(template, 'pswp--animated-in');
|
|
|
+ }
|
|
|
+
|
|
|
+ if(fadeEverything) {
|
|
|
+ if(out) {
|
|
|
+ framework[ (closeWithRaf ? 'remove' : 'add') + 'Class' ](template, 'pswp--animate_opacity');
|
|
|
+ } else {
|
|
|
+ setTimeout(function() {
|
|
|
+ framework.addClass(template, 'pswp--animate_opacity');
|
|
|
+ }, 30);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ _showOrHideTimeout = setTimeout(function() {
|
|
|
+
|
|
|
+ _shout('initialZoom' + (out ? 'Out' : 'In') );
|
|
|
+
|
|
|
+
|
|
|
+ if(!out) {
|
|
|
+
|
|
|
+ // "in" animation always uses CSS transitions (instead of rAF).
|
|
|
+ // CSS transition work faster here,
|
|
|
+ // as developer may also want to animate other things,
|
|
|
+ // like ui on top of sliding area, which can be animated just via CSS
|
|
|
+
|
|
|
+ _currZoomLevel = item.initialZoomLevel;
|
|
|
+ _equalizePoints(_panOffset, item.initialPosition );
|
|
|
+ _applyCurrentZoomPan();
|
|
|
+ _applyBgOpacity(1);
|
|
|
+
|
|
|
+ if(fadeEverything) {
|
|
|
+ template.style.opacity = 1;
|
|
|
+ } else {
|
|
|
+ _applyBgOpacity(1);
|
|
|
+ }
|
|
|
+
|
|
|
+ _showOrHideTimeout = setTimeout(onComplete, duration + 20);
|
|
|
+ } else {
|
|
|
+
|
|
|
+ // "out" animation uses rAF only when PhotoSwipe is closed by browser scroll, to recalculate position
|
|
|
+ var destZoomLevel = thumbBounds.w / item.w,
|
|
|
+ initialPanOffset = {
|
|
|
+ x: _panOffset.x,
|
|
|
+ y: _panOffset.y
|
|
|
+ },
|
|
|
+ initialZoomLevel = _currZoomLevel,
|
|
|
+ initalBgOpacity = _bgOpacity,
|
|
|
+ onUpdate = function(now) {
|
|
|
+
|
|
|
+ if(now === 1) {
|
|
|
+ _currZoomLevel = destZoomLevel;
|
|
|
+ _panOffset.x = thumbBounds.x;
|
|
|
+ _panOffset.y = thumbBounds.y - _currentWindowScrollY;
|
|
|
+ } else {
|
|
|
+ _currZoomLevel = (destZoomLevel - initialZoomLevel) * now + initialZoomLevel;
|
|
|
+ _panOffset.x = (thumbBounds.x - initialPanOffset.x) * now + initialPanOffset.x;
|
|
|
+ _panOffset.y = (thumbBounds.y - _currentWindowScrollY - initialPanOffset.y) * now + initialPanOffset.y;
|
|
|
+ }
|
|
|
+
|
|
|
+ _applyCurrentZoomPan();
|
|
|
+ if(fadeEverything) {
|
|
|
+ template.style.opacity = 1 - now;
|
|
|
+ } else {
|
|
|
+ _applyBgOpacity( initalBgOpacity - now * initalBgOpacity );
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+ if(closeWithRaf) {
|
|
|
+ _animateProp('initialZoom', 0, 1, duration, framework.easing.cubic.out, onUpdate, onComplete);
|
|
|
+ } else {
|
|
|
+ onUpdate(1);
|
|
|
+ _showOrHideTimeout = setTimeout(onComplete, duration + 20);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }, out ? 25 : 90); // Main purpose of this delay is to give browser time to paint and
|
|
|
+ // create composite layers of PhotoSwipe UI parts (background, controls, caption, arrows).
|
|
|
+ // Which avoids lag at the beginning of scale transition.
|
|
|
+ };
|
|
|
+ startAnimation();
|
|
|
+
|
|
|
+
|
|
|
+ };
|
|
|
+
|
|
|
+/*>>show-hide-transition*/
|
|
|
+
|
|
|
+/*>>items-controller*/
|
|
|
+/**
|
|
|
+*
|
|
|
+* Controller manages gallery items, their dimensions, and their content.
|
|
|
+*
|
|
|
+*/
|
|
|
+
|
|
|
+var _items,
|
|
|
+ _tempPanAreaSize = {},
|
|
|
+ _imagesToAppendPool = [],
|
|
|
+ _initialContentSet,
|
|
|
+ _initialZoomRunning,
|
|
|
+ _controllerDefaultOptions = {
|
|
|
+ index: 0,
|
|
|
+ errorMsg: '<div class="pswp__error-msg"><a href="%url%" target="_blank">The image</a> could not be loaded.</div>',
|
|
|
+ forceProgressiveLoading: false, // TODO
|
|
|
+ preload: [1,1],
|
|
|
+ getNumItemsFn: function() {
|
|
|
+ return _items.length;
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+
|
|
|
+var _getItemAt,
|
|
|
+ _getNumItems,
|
|
|
+ _initialIsLoop,
|
|
|
+ _getZeroBounds = function() {
|
|
|
+ return {
|
|
|
+ center:{x:0,y:0},
|
|
|
+ max:{x:0,y:0},
|
|
|
+ min:{x:0,y:0}
|
|
|
+ };
|
|
|
+ },
|
|
|
+ _calculateSingleItemPanBounds = function(item, realPanElementW, realPanElementH ) {
|
|
|
+ var bounds = item.bounds;
|
|
|
+
|
|
|
+ // position of element when it's centered
|
|
|
+ bounds.center.x = Math.round((_tempPanAreaSize.x - realPanElementW) / 2);
|
|
|
+ bounds.center.y = Math.round((_tempPanAreaSize.y - realPanElementH) / 2) + item.vGap.top;
|
|
|
+
|
|
|
+ // maximum pan position
|
|
|
+ bounds.max.x = (realPanElementW > _tempPanAreaSize.x) ?
|
|
|
+ Math.round(_tempPanAreaSize.x - realPanElementW) :
|
|
|
+ bounds.center.x;
|
|
|
+
|
|
|
+ bounds.max.y = (realPanElementH > _tempPanAreaSize.y) ?
|
|
|
+ Math.round(_tempPanAreaSize.y - realPanElementH) + item.vGap.top :
|
|
|
+ bounds.center.y;
|
|
|
+
|
|
|
+ // minimum pan position
|
|
|
+ bounds.min.x = (realPanElementW > _tempPanAreaSize.x) ? 0 : bounds.center.x;
|
|
|
+ bounds.min.y = (realPanElementH > _tempPanAreaSize.y) ? item.vGap.top : bounds.center.y;
|
|
|
+ },
|
|
|
+ _calculateItemSize = function(item, viewportSize, zoomLevel) {
|
|
|
+
|
|
|
+ if (item.src && !item.loadError) {
|
|
|
+ var isInitial = !zoomLevel;
|
|
|
+
|
|
|
+ if(isInitial) {
|
|
|
+ if(!item.vGap) {
|
|
|
+ item.vGap = {top:0,bottom:0};
|
|
|
+ }
|
|
|
+ // allows overriding vertical margin for individual items
|
|
|
+ _shout('parseVerticalMargin', item);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ _tempPanAreaSize.x = viewportSize.x;
|
|
|
+ _tempPanAreaSize.y = viewportSize.y - item.vGap.top - item.vGap.bottom;
|
|
|
+
|
|
|
+ if (isInitial) {
|
|
|
+ var hRatio = _tempPanAreaSize.x / item.w;
|
|
|
+ var vRatio = _tempPanAreaSize.y / item.h;
|
|
|
+
|
|
|
+ item.fitRatio = hRatio < vRatio ? hRatio : vRatio;
|
|
|
+ //item.fillRatio = hRatio > vRatio ? hRatio : vRatio;
|
|
|
+
|
|
|
+ var scaleMode = _options.scaleMode;
|
|
|
+
|
|
|
+ if (scaleMode === 'orig') {
|
|
|
+ zoomLevel = 1;
|
|
|
+ } else if (scaleMode === 'fit') {
|
|
|
+ zoomLevel = item.fitRatio;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (zoomLevel > 1) {
|
|
|
+ zoomLevel = 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ item.initialZoomLevel = zoomLevel;
|
|
|
+
|
|
|
+ if(!item.bounds) {
|
|
|
+ // reuse bounds object
|
|
|
+ item.bounds = _getZeroBounds();
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if(!zoomLevel) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ _calculateSingleItemPanBounds(item, item.w * zoomLevel, item.h * zoomLevel);
|
|
|
+
|
|
|
+ if (isInitial && zoomLevel === item.initialZoomLevel) {
|
|
|
+ item.initialPosition = item.bounds.center;
|
|
|
+ }
|
|
|
+
|
|
|
+ return item.bounds;
|
|
|
+ } else {
|
|
|
+ item.w = item.h = 0;
|
|
|
+ item.initialZoomLevel = item.fitRatio = 1;
|
|
|
+ item.bounds = _getZeroBounds();
|
|
|
+ item.initialPosition = item.bounds.center;
|
|
|
+
|
|
|
+ // if it's not image, we return zero bounds (content is not zoomable)
|
|
|
+ return item.bounds;
|
|
|
+ }
|
|
|
+
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ _appendImage = function(index, item, baseDiv, img, preventAnimation, keepPlaceholder) {
|
|
|
+
|
|
|
+
|
|
|
+ if(item.loadError) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(img) {
|
|
|
+
|
|
|
+ item.imageAppended = true;
|
|
|
+ _setImageSize(item, img, (item === self.currItem && _renderMaxResolution) );
|
|
|
+
|
|
|
+ baseDiv.appendChild(img);
|
|
|
+
|
|
|
+ if(keepPlaceholder) {
|
|
|
+ setTimeout(function() {
|
|
|
+ if(item && item.loaded && item.placeholder) {
|
|
|
+ item.placeholder.style.display = 'none';
|
|
|
+ item.placeholder = null;
|
|
|
+ }
|
|
|
+ }, 500);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ _preloadImage = function(item) {
|
|
|
+ item.loading = true;
|
|
|
+ item.loaded = false;
|
|
|
+ var img = item.img = framework.createEl('pswp__img', 'img');
|
|
|
+ var onComplete = function() {
|
|
|
+ item.loading = false;
|
|
|
+ item.loaded = true;
|
|
|
+
|
|
|
+ if(item.loadComplete) {
|
|
|
+ item.loadComplete(item);
|
|
|
+ } else {
|
|
|
+ item.img = null; // no need to store image object
|
|
|
+ }
|
|
|
+ img.onload = img.onerror = null;
|
|
|
+ img = null;
|
|
|
+ };
|
|
|
+ img.onload = onComplete;
|
|
|
+ img.onerror = function() {
|
|
|
+ item.loadError = true;
|
|
|
+ onComplete();
|
|
|
+ };
|
|
|
+
|
|
|
+ img.src = item.src;// + '?a=' + Math.random();
|
|
|
+
|
|
|
+ return img;
|
|
|
+ },
|
|
|
+ _checkForError = function(item, cleanUp) {
|
|
|
+ if(item.src && item.loadError && item.container) {
|
|
|
+
|
|
|
+ if(cleanUp) {
|
|
|
+ item.container.innerHTML = '';
|
|
|
+ }
|
|
|
+
|
|
|
+ item.container.innerHTML = _options.errorMsg.replace('%url%', item.src );
|
|
|
+ return true;
|
|
|
+
|
|
|
+ }
|
|
|
+ },
|
|
|
+ _setImageSize = function(item, img, maxRes) {
|
|
|
+ if(!item.src) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(!img) {
|
|
|
+ img = item.container.lastChild;
|
|
|
+ }
|
|
|
+
|
|
|
+ var w = maxRes ? item.w : Math.round(item.w * item.fitRatio),
|
|
|
+ h = maxRes ? item.h : Math.round(item.h * item.fitRatio);
|
|
|
+
|
|
|
+ if(item.placeholder && !item.loaded) {
|
|
|
+ item.placeholder.style.width = w + 'px';
|
|
|
+ item.placeholder.style.height = h + 'px';
|
|
|
+ }
|
|
|
+
|
|
|
+ img.style.width = w + 'px';
|
|
|
+ img.style.height = h + 'px';
|
|
|
+ },
|
|
|
+ _appendImagesPool = function() {
|
|
|
+
|
|
|
+ if(_imagesToAppendPool.length) {
|
|
|
+ var poolItem;
|
|
|
+
|
|
|
+ for(var i = 0; i < _imagesToAppendPool.length; i++) {
|
|
|
+ poolItem = _imagesToAppendPool[i];
|
|
|
+ if( poolItem.holder.index === poolItem.index ) {
|
|
|
+ _appendImage(poolItem.index, poolItem.item, poolItem.baseDiv, poolItem.img, false, poolItem.clearPlaceholder);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ _imagesToAppendPool = [];
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+_registerModule('Controller', {
|
|
|
+
|
|
|
+ publicMethods: {
|
|
|
+
|
|
|
+ lazyLoadItem: function(index) {
|
|
|
+ index = _getLoopedId(index);
|
|
|
+ var item = _getItemAt(index);
|
|
|
+
|
|
|
+ if(!item || ((item.loaded || item.loading) && !_itemsNeedUpdate)) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ _shout('gettingData', index, item);
|
|
|
+
|
|
|
+ if (!item.src) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ _preloadImage(item);
|
|
|
+ },
|
|
|
+ initController: function() {
|
|
|
+ framework.extend(_options, _controllerDefaultOptions, true);
|
|
|
+ self.items = _items = items;
|
|
|
+ _getItemAt = self.getItemAt;
|
|
|
+ _getNumItems = _options.getNumItemsFn; //self.getNumItems;
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ _initialIsLoop = _options.loop;
|
|
|
+ if(_getNumItems() < 3) {
|
|
|
+ _options.loop = false; // disable loop if less then 3 items
|
|
|
+ }
|
|
|
+
|
|
|
+ _listen('beforeChange', function(diff) {
|
|
|
+
|
|
|
+ var p = _options.preload,
|
|
|
+ isNext = diff === null ? true : (diff >= 0),
|
|
|
+ preloadBefore = Math.min(p[0], _getNumItems() ),
|
|
|
+ preloadAfter = Math.min(p[1], _getNumItems() ),
|
|
|
+ i;
|
|
|
+
|
|
|
+
|
|
|
+ for(i = 1; i <= (isNext ? preloadAfter : preloadBefore); i++) {
|
|
|
+ self.lazyLoadItem(_currentItemIndex+i);
|
|
|
+ }
|
|
|
+ for(i = 1; i <= (isNext ? preloadBefore : preloadAfter); i++) {
|
|
|
+ self.lazyLoadItem(_currentItemIndex-i);
|
|
|
+ }
|
|
|
+ });
|
|
|
+
|
|
|
+ _listen('initialLayout', function() {
|
|
|
+ self.currItem.initialLayout = _options.getThumbBoundsFn && _options.getThumbBoundsFn(_currentItemIndex);
|
|
|
+ });
|
|
|
+
|
|
|
+ _listen('mainScrollAnimComplete', _appendImagesPool);
|
|
|
+ _listen('initialZoomInEnd', _appendImagesPool);
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ _listen('destroy', function() {
|
|
|
+ var item;
|
|
|
+ for(var i = 0; i < _items.length; i++) {
|
|
|
+ item = _items[i];
|
|
|
+ // remove reference to DOM elements, for GC
|
|
|
+ if(item.container) {
|
|
|
+ item.container = null;
|
|
|
+ }
|
|
|
+ if(item.placeholder) {
|
|
|
+ item.placeholder = null;
|
|
|
+ }
|
|
|
+ if(item.img) {
|
|
|
+ item.img = null;
|
|
|
+ }
|
|
|
+ if(item.preloader) {
|
|
|
+ item.preloader = null;
|
|
|
+ }
|
|
|
+ if(item.loadError) {
|
|
|
+ item.loaded = item.loadError = false;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ _imagesToAppendPool = null;
|
|
|
+ });
|
|
|
+ },
|
|
|
+
|
|
|
+
|
|
|
+ getItemAt: function(index) {
|
|
|
+ if (index >= 0) {
|
|
|
+ return _items[index] !== undefined ? _items[index] : false;
|
|
|
+ }
|
|
|
+ return false;
|
|
|
+ },
|
|
|
+
|
|
|
+ allowProgressiveImg: function() {
|
|
|
+ // 1. Progressive image loading isn't working on webkit/blink
|
|
|
+ // when hw-acceleration (e.g. translateZ) is applied to IMG element.
|
|
|
+ // That's why in PhotoSwipe parent element gets zoom transform, not image itself.
|
|
|
+ //
|
|
|
+ // 2. Progressive image loading sometimes blinks in webkit/blink when applying animation to parent element.
|
|
|
+ // That's why it's disabled on touch devices (mainly because of swipe transition)
|
|
|
+ //
|
|
|
+ // 3. Progressive image loading sometimes doesn't work in IE (up to 11).
|
|
|
+
|
|
|
+ // Don't allow progressive loading on non-large touch devices
|
|
|
+ return _options.forceProgressiveLoading || !_likelyTouchDevice || _options.mouseUsed || screen.width > 1200;
|
|
|
+ // 1200 - to eliminate touch devices with large screen (like Chromebook Pixel)
|
|
|
+ },
|
|
|
+
|
|
|
+ setContent: function(holder, index) {
|
|
|
+
|
|
|
+ if(_options.loop) {
|
|
|
+ index = _getLoopedId(index);
|
|
|
+ }
|
|
|
+
|
|
|
+ var prevItem = self.getItemAt(holder.index);
|
|
|
+ if(prevItem) {
|
|
|
+ prevItem.container = null;
|
|
|
+ }
|
|
|
+
|
|
|
+ var item = self.getItemAt(index),
|
|
|
+ img;
|
|
|
+
|
|
|
+ if(!item) {
|
|
|
+ holder.el.innerHTML = '';
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ // allow to override data
|
|
|
+ _shout('gettingData', index, item);
|
|
|
+
|
|
|
+ holder.index = index;
|
|
|
+ holder.item = item;
|
|
|
+
|
|
|
+ // base container DIV is created only once for each of 3 holders
|
|
|
+ var baseDiv = item.container = framework.createEl('pswp__zoom-wrap');
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ if(!item.src && item.html) {
|
|
|
+ if(item.html.tagName) {
|
|
|
+ baseDiv.appendChild(item.html);
|
|
|
+ } else {
|
|
|
+ baseDiv.innerHTML = item.html;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ _checkForError(item);
|
|
|
+
|
|
|
+ _calculateItemSize(item, _viewportSize);
|
|
|
+
|
|
|
+ if(item.src && !item.loadError && !item.loaded) {
|
|
|
+
|
|
|
+ item.loadComplete = function(item) {
|
|
|
+
|
|
|
+ // gallery closed before image finished loading
|
|
|
+ if(!_isOpen) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ // check if holder hasn't changed while image was loading
|
|
|
+ if(holder && holder.index === index ) {
|
|
|
+ if( _checkForError(item, true) ) {
|
|
|
+ item.loadComplete = item.img = null;
|
|
|
+ _calculateItemSize(item, _viewportSize);
|
|
|
+ _applyZoomPanToItem(item);
|
|
|
+
|
|
|
+ if(holder.index === _currentItemIndex) {
|
|
|
+ // recalculate dimensions
|
|
|
+ self.updateCurrZoomItem();
|
|
|
+ }
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ if( !item.imageAppended ) {
|
|
|
+ if(_features.transform && (_mainScrollAnimating || _initialZoomRunning) ) {
|
|
|
+ _imagesToAppendPool.push({
|
|
|
+ item:item,
|
|
|
+ baseDiv:baseDiv,
|
|
|
+ img:item.img,
|
|
|
+ index:index,
|
|
|
+ holder:holder,
|
|
|
+ clearPlaceholder:true
|
|
|
+ });
|
|
|
+ } else {
|
|
|
+ _appendImage(index, item, baseDiv, item.img, _mainScrollAnimating || _initialZoomRunning, true);
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ // remove preloader & mini-img
|
|
|
+ if(!_initialZoomRunning && item.placeholder) {
|
|
|
+ item.placeholder.style.display = 'none';
|
|
|
+ item.placeholder = null;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ item.loadComplete = null;
|
|
|
+ item.img = null; // no need to store image element after it's added
|
|
|
+
|
|
|
+ _shout('imageLoadComplete', index, item);
|
|
|
+ };
|
|
|
+
|
|
|
+ if(framework.features.transform) {
|
|
|
+
|
|
|
+ var placeholderClassName = 'pswp__img pswp__img--placeholder';
|
|
|
+ placeholderClassName += (item.msrc ? '' : ' pswp__img--placeholder--blank');
|
|
|
+
|
|
|
+ var placeholder = framework.createEl(placeholderClassName, item.msrc ? 'img' : '');
|
|
|
+ if(item.msrc) {
|
|
|
+ placeholder.src = item.msrc;
|
|
|
+ }
|
|
|
+
|
|
|
+ _setImageSize(item, placeholder);
|
|
|
+
|
|
|
+ baseDiv.appendChild(placeholder);
|
|
|
+ item.placeholder = placeholder;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ if(!item.loading) {
|
|
|
+ _preloadImage(item);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ if( self.allowProgressiveImg() ) {
|
|
|
+ // just append image
|
|
|
+ if(!_initialContentSet && _features.transform) {
|
|
|
+ _imagesToAppendPool.push({
|
|
|
+ item:item,
|
|
|
+ baseDiv:baseDiv,
|
|
|
+ img:item.img,
|
|
|
+ index:index,
|
|
|
+ holder:holder
|
|
|
+ });
|
|
|
+ } else {
|
|
|
+ _appendImage(index, item, baseDiv, item.img, true, true);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ } else if(item.src && !item.loadError) {
|
|
|
+ // image object is created every time, due to bugs of image loading & delay when switching images
|
|
|
+ img = framework.createEl('pswp__img', 'img');
|
|
|
+ img.style.opacity = 1;
|
|
|
+ img.src = item.src;
|
|
|
+ _setImageSize(item, img);
|
|
|
+ _appendImage(index, item, baseDiv, img, true);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ if(!_initialContentSet && index === _currentItemIndex) {
|
|
|
+ _currZoomElementStyle = baseDiv.style;
|
|
|
+ _showOrHide(item, (img ||item.img) );
|
|
|
+ } else {
|
|
|
+ _applyZoomPanToItem(item);
|
|
|
+ }
|
|
|
+
|
|
|
+ holder.el.innerHTML = '';
|
|
|
+ holder.el.appendChild(baseDiv);
|
|
|
+ },
|
|
|
+
|
|
|
+ cleanSlide: function( item ) {
|
|
|
+ if(item.img ) {
|
|
|
+ item.img.onload = item.img.onerror = null;
|
|
|
+ }
|
|
|
+ item.loaded = item.loading = item.img = item.imageAppended = false;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+});
|
|
|
+
|
|
|
+/*>>items-controller*/
|
|
|
+
|
|
|
+/*>>tap*/
|
|
|
+/**
|
|
|
+ * tap.js:
|
|
|
+ *
|
|
|
+ * Displatches tap and double-tap events.
|
|
|
+ *
|
|
|
+ */
|
|
|
+
|
|
|
+var tapTimer,
|
|
|
+ tapReleasePoint = {},
|
|
|
+ _dispatchTapEvent = function(origEvent, releasePoint, pointerType) {
|
|
|
+ var e = document.createEvent( 'CustomEvent' ),
|
|
|
+ eDetail = {
|
|
|
+ origEvent:origEvent,
|
|
|
+ target:origEvent.target,
|
|
|
+ releasePoint: releasePoint,
|
|
|
+ pointerType:pointerType || 'touch'
|
|
|
+ };
|
|
|
+
|
|
|
+ e.initCustomEvent( 'pswpTap', true, true, eDetail );
|
|
|
+ origEvent.target.dispatchEvent(e);
|
|
|
+ };
|
|
|
+
|
|
|
+_registerModule('Tap', {
|
|
|
+ publicMethods: {
|
|
|
+ initTap: function() {
|
|
|
+ _listen('firstTouchStart', self.onTapStart);
|
|
|
+ _listen('touchRelease', self.onTapRelease);
|
|
|
+ _listen('destroy', function() {
|
|
|
+ tapReleasePoint = {};
|
|
|
+ tapTimer = null;
|
|
|
+ });
|
|
|
+ },
|
|
|
+ onTapStart: function(touchList) {
|
|
|
+ if(touchList.length > 1) {
|
|
|
+ clearTimeout(tapTimer);
|
|
|
+ tapTimer = null;
|
|
|
+ }
|
|
|
+ },
|
|
|
+ onTapRelease: function(e, releasePoint) {
|
|
|
+ if(!releasePoint) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(!_moved && !_isMultitouch && !_numAnimations) {
|
|
|
+ var p0 = releasePoint;
|
|
|
+ if(tapTimer) {
|
|
|
+ clearTimeout(tapTimer);
|
|
|
+ tapTimer = null;
|
|
|
+
|
|
|
+ // Check if taped on the same place
|
|
|
+ if ( _isNearbyPoints(p0, tapReleasePoint) ) {
|
|
|
+ _shout('doubleTap', p0);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if(releasePoint.type === 'mouse') {
|
|
|
+ _dispatchTapEvent(e, releasePoint, 'mouse');
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ var clickedTagName = e.target.tagName.toUpperCase();
|
|
|
+ // avoid double tap delay on buttons and elements that have class pswp__single-tap
|
|
|
+ if(clickedTagName === 'BUTTON' || framework.hasClass(e.target, 'pswp__single-tap') ) {
|
|
|
+ _dispatchTapEvent(e, releasePoint);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ _equalizePoints(tapReleasePoint, p0);
|
|
|
+
|
|
|
+ tapTimer = setTimeout(function() {
|
|
|
+ _dispatchTapEvent(e, releasePoint);
|
|
|
+ tapTimer = null;
|
|
|
+ }, 300);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+});
|
|
|
+
|
|
|
+/*>>tap*/
|
|
|
+
|
|
|
+/*>>desktop-zoom*/
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * desktop-zoom.js:
|
|
|
+ *
|
|
|
+ * - Binds mousewheel event for paning zoomed image.
|
|
|
+ * - Manages "dragging", "zoomed-in", "zoom-out" classes.
|
|
|
+ * (which are used for cursors and zoom icon)
|
|
|
+ * - Adds toggleDesktopZoom function.
|
|
|
+ *
|
|
|
+ */
|
|
|
+
|
|
|
+var _wheelDelta;
|
|
|
+
|
|
|
+_registerModule('DesktopZoom', {
|
|
|
+
|
|
|
+ publicMethods: {
|
|
|
+
|
|
|
+ initDesktopZoom: function() {
|
|
|
+
|
|
|
+ if(_oldIE) {
|
|
|
+ // no zoom for old IE (<=8)
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_likelyTouchDevice) {
|
|
|
+ // if detected hardware touch support, we wait until mouse is used,
|
|
|
+ // and only then apply desktop-zoom features
|
|
|
+ _listen('mouseUsed', function() {
|
|
|
+ self.setupDesktopZoom();
|
|
|
+ });
|
|
|
+ } else {
|
|
|
+ self.setupDesktopZoom(true);
|
|
|
+ }
|
|
|
+
|
|
|
+ },
|
|
|
+
|
|
|
+ setupDesktopZoom: function(onInit) {
|
|
|
+
|
|
|
+ _wheelDelta = {};
|
|
|
+
|
|
|
+ var events = 'wheel mousewheel DOMMouseScroll';
|
|
|
+
|
|
|
+ _listen('bindEvents', function() {
|
|
|
+ framework.bind(template, events, self.handleMouseWheel);
|
|
|
+ });
|
|
|
+
|
|
|
+ _listen('unbindEvents', function() {
|
|
|
+ if(_wheelDelta) {
|
|
|
+ framework.unbind(template, events, self.handleMouseWheel);
|
|
|
+ }
|
|
|
+ });
|
|
|
+
|
|
|
+ self.mouseZoomedIn = false;
|
|
|
+
|
|
|
+ var hasDraggingClass,
|
|
|
+ updateZoomable = function() {
|
|
|
+ if(self.mouseZoomedIn) {
|
|
|
+ framework.removeClass(template, 'pswp--zoomed-in');
|
|
|
+ self.mouseZoomedIn = false;
|
|
|
+ }
|
|
|
+ if(_currZoomLevel < 1) {
|
|
|
+ framework.addClass(template, 'pswp--zoom-allowed');
|
|
|
+ } else {
|
|
|
+ framework.removeClass(template, 'pswp--zoom-allowed');
|
|
|
+ }
|
|
|
+ removeDraggingClass();
|
|
|
+ },
|
|
|
+ removeDraggingClass = function() {
|
|
|
+ if(hasDraggingClass) {
|
|
|
+ framework.removeClass(template, 'pswp--dragging');
|
|
|
+ hasDraggingClass = false;
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+ _listen('resize' , updateZoomable);
|
|
|
+ _listen('afterChange' , updateZoomable);
|
|
|
+ _listen('pointerDown', function() {
|
|
|
+ if(self.mouseZoomedIn) {
|
|
|
+ hasDraggingClass = true;
|
|
|
+ framework.addClass(template, 'pswp--dragging');
|
|
|
+ }
|
|
|
+ });
|
|
|
+ _listen('pointerUp', removeDraggingClass);
|
|
|
+
|
|
|
+ if(!onInit) {
|
|
|
+ updateZoomable();
|
|
|
+ }
|
|
|
+
|
|
|
+ },
|
|
|
+
|
|
|
+ handleMouseWheel: function(e) {
|
|
|
+
|
|
|
+ if(_currZoomLevel <= self.currItem.fitRatio) {
|
|
|
+ if( _options.modal ) {
|
|
|
+
|
|
|
+ if (!_options.closeOnScroll || _numAnimations || _isDragging) {
|
|
|
+ e.preventDefault();
|
|
|
+ } else if(_transformKey && Math.abs(e.deltaY) > 2) {
|
|
|
+ // close PhotoSwipe
|
|
|
+ // if browser supports transforms & scroll changed enough
|
|
|
+ _closedByScroll = true;
|
|
|
+ self.close();
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ // allow just one event to fire
|
|
|
+ e.stopPropagation();
|
|
|
+
|
|
|
+ // https://developer.mozilla.org/en-US/docs/Web/Events/wheel
|
|
|
+ _wheelDelta.x = 0;
|
|
|
+
|
|
|
+ if('deltaX' in e) {
|
|
|
+ if(e.deltaMode === 1 /* DOM_DELTA_LINE */) {
|
|
|
+ // 18 - average line height
|
|
|
+ _wheelDelta.x = e.deltaX * 18;
|
|
|
+ _wheelDelta.y = e.deltaY * 18;
|
|
|
+ } else {
|
|
|
+ _wheelDelta.x = e.deltaX;
|
|
|
+ _wheelDelta.y = e.deltaY;
|
|
|
+ }
|
|
|
+ } else if('wheelDelta' in e) {
|
|
|
+ if(e.wheelDeltaX) {
|
|
|
+ _wheelDelta.x = -0.16 * e.wheelDeltaX;
|
|
|
+ }
|
|
|
+ if(e.wheelDeltaY) {
|
|
|
+ _wheelDelta.y = -0.16 * e.wheelDeltaY;
|
|
|
+ } else {
|
|
|
+ _wheelDelta.y = -0.16 * e.wheelDelta;
|
|
|
+ }
|
|
|
+ } else if('detail' in e) {
|
|
|
+ _wheelDelta.y = e.detail;
|
|
|
+ } else {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ _calculatePanBounds(_currZoomLevel, true);
|
|
|
+
|
|
|
+ var newPanX = _panOffset.x - _wheelDelta.x,
|
|
|
+ newPanY = _panOffset.y - _wheelDelta.y;
|
|
|
+
|
|
|
+ // only prevent scrolling in nonmodal mode when not at edges
|
|
|
+ if (_options.modal ||
|
|
|
+ (
|
|
|
+ newPanX <= _currPanBounds.min.x && newPanX >= _currPanBounds.max.x &&
|
|
|
+ newPanY <= _currPanBounds.min.y && newPanY >= _currPanBounds.max.y
|
|
|
+ ) ) {
|
|
|
+ e.preventDefault();
|
|
|
+ }
|
|
|
+
|
|
|
+ // TODO: use rAF instead of mousewheel?
|
|
|
+ self.panTo(newPanX, newPanY);
|
|
|
+ },
|
|
|
+
|
|
|
+ toggleDesktopZoom: function(centerPoint) {
|
|
|
+ centerPoint = centerPoint || {x:_viewportSize.x/2 + _offset.x, y:_viewportSize.y/2 + _offset.y };
|
|
|
+
|
|
|
+ var doubleTapZoomLevel = _options.getDoubleTapZoom(true, self.currItem);
|
|
|
+ var zoomOut = _currZoomLevel === doubleTapZoomLevel;
|
|
|
+
|
|
|
+ self.mouseZoomedIn = !zoomOut;
|
|
|
+
|
|
|
+ self.zoomTo(zoomOut ? self.currItem.initialZoomLevel : doubleTapZoomLevel, centerPoint, 333);
|
|
|
+ framework[ (!zoomOut ? 'add' : 'remove') + 'Class'](template, 'pswp--zoomed-in');
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+});
|
|
|
+
|
|
|
+
|
|
|
+/*>>desktop-zoom*/
|
|
|
+
|
|
|
+/*>>history*/
|
|
|
+/**
|
|
|
+ *
|
|
|
+ * history.js:
|
|
|
+ *
|
|
|
+ * - Back button to close gallery.
|
|
|
+ *
|
|
|
+ * - Unique URL for each slide: example.com/&pid=1&gid=3
|
|
|
+ * (where PID is picture index, and GID and gallery index)
|
|
|
+ *
|
|
|
+ * - Switch URL when slides change.
|
|
|
+ *
|
|
|
+ */
|
|
|
+
|
|
|
+
|
|
|
+var _historyDefaultOptions = {
|
|
|
+ history: true,
|
|
|
+ galleryUID: 1
|
|
|
+};
|
|
|
+
|
|
|
+var _historyUpdateTimeout,
|
|
|
+ _hashChangeTimeout,
|
|
|
+ _hashAnimCheckTimeout,
|
|
|
+ _hashChangedByScript,
|
|
|
+ _hashChangedByHistory,
|
|
|
+ _hashReseted,
|
|
|
+ _initialHash,
|
|
|
+ _historyChanged,
|
|
|
+ _closedFromURL,
|
|
|
+ _urlChangedOnce,
|
|
|
+ _windowLoc,
|
|
|
+
|
|
|
+ _supportsPushState,
|
|
|
+
|
|
|
+ _getHash = function() {
|
|
|
+ return _windowLoc.hash.substring(1);
|
|
|
+ },
|
|
|
+ _cleanHistoryTimeouts = function() {
|
|
|
+
|
|
|
+ if(_historyUpdateTimeout) {
|
|
|
+ clearTimeout(_historyUpdateTimeout);
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_hashAnimCheckTimeout) {
|
|
|
+ clearTimeout(_hashAnimCheckTimeout);
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ // pid - Picture index
|
|
|
+ // gid - Gallery index
|
|
|
+ _parseItemIndexFromURL = function() {
|
|
|
+ var hash = _getHash(),
|
|
|
+ params = {};
|
|
|
+
|
|
|
+ if(hash.length < 5) { // pid=1
|
|
|
+ return params;
|
|
|
+ }
|
|
|
+
|
|
|
+ var i, vars = hash.split('&');
|
|
|
+ for (i = 0; i < vars.length; i++) {
|
|
|
+ if(!vars[i]) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ var pair = vars[i].split('=');
|
|
|
+ if(pair.length < 2) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ params[pair[0]] = pair[1];
|
|
|
+ }
|
|
|
+ if(_options.galleryPIDs) {
|
|
|
+ // detect custom pid in hash and search for it among the items collection
|
|
|
+ var searchfor = params.pid;
|
|
|
+ params.pid = 0; // if custom pid cannot be found, fallback to the first item
|
|
|
+ for(i = 0; i < _items.length; i++) {
|
|
|
+ if(_items[i].pid === searchfor) {
|
|
|
+ params.pid = i;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ params.pid = parseInt(params.pid,10)-1;
|
|
|
+ }
|
|
|
+ if( params.pid < 0 ) {
|
|
|
+ params.pid = 0;
|
|
|
+ }
|
|
|
+ return params;
|
|
|
+ },
|
|
|
+ _updateHash = function() {
|
|
|
+
|
|
|
+ if(_hashAnimCheckTimeout) {
|
|
|
+ clearTimeout(_hashAnimCheckTimeout);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ if(_numAnimations || _isDragging) {
|
|
|
+ // changing browser URL forces layout/paint in some browsers, which causes noticable lag during animation
|
|
|
+ // that's why we update hash only when no animations running
|
|
|
+ _hashAnimCheckTimeout = setTimeout(_updateHash, 500);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(_hashChangedByScript) {
|
|
|
+ clearTimeout(_hashChangeTimeout);
|
|
|
+ } else {
|
|
|
+ _hashChangedByScript = true;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ var pid = (_currentItemIndex + 1);
|
|
|
+ var item = _getItemAt( _currentItemIndex );
|
|
|
+ if(item.hasOwnProperty('pid')) {
|
|
|
+ // carry forward any custom pid assigned to the item
|
|
|
+ pid = item.pid;
|
|
|
+ }
|
|
|
+ var newHash = _initialHash + '&' + 'gid=' + _options.galleryUID + '&' + 'pid=' + pid;
|
|
|
+
|
|
|
+ if(!_historyChanged) {
|
|
|
+ if(_windowLoc.hash.indexOf(newHash) === -1) {
|
|
|
+ _urlChangedOnce = true;
|
|
|
+ }
|
|
|
+ // first time - add new hisory record, then just replace
|
|
|
+ }
|
|
|
+
|
|
|
+ var newURL = _windowLoc.href.split('#')[0] + '#' + newHash;
|
|
|
+
|
|
|
+ if( _supportsPushState ) {
|
|
|
+
|
|
|
+ if('#' + newHash !== window.location.hash) {
|
|
|
+ history[_historyChanged ? 'replaceState' : 'pushState']('', document.title, newURL);
|
|
|
+ }
|
|
|
+
|
|
|
+ } else {
|
|
|
+ if(_historyChanged) {
|
|
|
+ _windowLoc.replace( newURL );
|
|
|
+ } else {
|
|
|
+ _windowLoc.hash = newHash;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ _historyChanged = true;
|
|
|
+ _hashChangeTimeout = setTimeout(function() {
|
|
|
+ _hashChangedByScript = false;
|
|
|
+ }, 60);
|
|
|
+ };
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+_registerModule('History', {
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ publicMethods: {
|
|
|
+ initHistory: function() {
|
|
|
+
|
|
|
+ framework.extend(_options, _historyDefaultOptions, true);
|
|
|
+
|
|
|
+ if( !_options.history ) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ _windowLoc = window.location;
|
|
|
+ _urlChangedOnce = false;
|
|
|
+ _closedFromURL = false;
|
|
|
+ _historyChanged = false;
|
|
|
+ _initialHash = _getHash();
|
|
|
+ _supportsPushState = ('pushState' in history);
|
|
|
+
|
|
|
+
|
|
|
+ if(_initialHash.indexOf('gid=') > -1) {
|
|
|
+ _initialHash = _initialHash.split('&gid=')[0];
|
|
|
+ _initialHash = _initialHash.split('?gid=')[0];
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ _listen('afterChange', self.updateURL);
|
|
|
+ _listen('unbindEvents', function() {
|
|
|
+ framework.unbind(window, 'hashchange', self.onHashChange);
|
|
|
+ });
|
|
|
+
|
|
|
+
|
|
|
+ var returnToOriginal = function() {
|
|
|
+ _hashReseted = true;
|
|
|
+ if(!_closedFromURL) {
|
|
|
+
|
|
|
+ if(_urlChangedOnce) {
|
|
|
+ history.back();
|
|
|
+ } else {
|
|
|
+
|
|
|
+ if(_initialHash) {
|
|
|
+ _windowLoc.hash = _initialHash;
|
|
|
+ } else {
|
|
|
+ if (_supportsPushState) {
|
|
|
+
|
|
|
+ // remove hash from url without refreshing it or scrolling to top
|
|
|
+ history.pushState('', document.title, _windowLoc.pathname + _windowLoc.search );
|
|
|
+ } else {
|
|
|
+ _windowLoc.hash = '';
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ _cleanHistoryTimeouts();
|
|
|
+ };
|
|
|
+
|
|
|
+
|
|
|
+ _listen('unbindEvents', function() {
|
|
|
+ if(_closedByScroll) {
|
|
|
+ // if PhotoSwipe is closed by scroll, we go "back" before the closing animation starts
|
|
|
+ // this is done to keep the scroll position
|
|
|
+ returnToOriginal();
|
|
|
+ }
|
|
|
+ });
|
|
|
+ _listen('destroy', function() {
|
|
|
+ if(!_hashReseted) {
|
|
|
+ returnToOriginal();
|
|
|
+ }
|
|
|
+ });
|
|
|
+ _listen('firstUpdate', function() {
|
|
|
+ _currentItemIndex = _parseItemIndexFromURL().pid;
|
|
|
+ });
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ var index = _initialHash.indexOf('pid=');
|
|
|
+ if(index > -1) {
|
|
|
+ _initialHash = _initialHash.substring(0, index);
|
|
|
+ if(_initialHash.slice(-1) === '&') {
|
|
|
+ _initialHash = _initialHash.slice(0, -1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ setTimeout(function() {
|
|
|
+ if(_isOpen) { // hasn't destroyed yet
|
|
|
+ framework.bind(window, 'hashchange', self.onHashChange);
|
|
|
+ }
|
|
|
+ }, 40);
|
|
|
+
|
|
|
+ },
|
|
|
+ onHashChange: function() {
|
|
|
+
|
|
|
+ if(_getHash() === _initialHash) {
|
|
|
+
|
|
|
+ _closedFromURL = true;
|
|
|
+ self.close();
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ if(!_hashChangedByScript) {
|
|
|
+
|
|
|
+ _hashChangedByHistory = true;
|
|
|
+ self.goTo( _parseItemIndexFromURL().pid );
|
|
|
+ _hashChangedByHistory = false;
|
|
|
+ }
|
|
|
+
|
|
|
+ },
|
|
|
+ updateURL: function() {
|
|
|
+
|
|
|
+ // Delay the update of URL, to avoid lag during transition,
|
|
|
+ // and to not to trigger actions like "refresh page sound" or "blinking favicon" to often
|
|
|
+
|
|
|
+ _cleanHistoryTimeouts();
|
|
|
+
|
|
|
+
|
|
|
+ if(_hashChangedByHistory) {
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ if(!_historyChanged) {
|
|
|
+ _updateHash(); // first time
|
|
|
+ } else {
|
|
|
+ _historyUpdateTimeout = setTimeout(_updateHash, 800);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+});
|
|
|
+
|
|
|
+
|
|
|
+/*>>history*/
|
|
|
+ framework.extend(self, publicMethods); };
|
|
|
+ return PhotoSwipe;
|
|
|
+});
|