6367 lines
170 KiB
JavaScript
6367 lines
170 KiB
JavaScript
/*!
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* PhotoSwipe 5.3.2 - https://photoswipe.com
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* (c) 2022 Dmytro Semenov
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*/
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/** @typedef {import('../photoswipe.js').Point} Point */
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/** @typedef {undefined | null | false | '' | 0} Falsy */
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/** @typedef {keyof HTMLElementTagNameMap} HTMLElementTagName */
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/**
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* @template {HTMLElementTagName | Falsy} [T="div"]
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* @template {Node | undefined} [NodeToAppendElementTo=undefined]
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* @param {string=} className
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* @param {T=} [tagName]
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* @param {NodeToAppendElementTo=} appendToEl
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* @returns {T extends HTMLElementTagName ? HTMLElementTagNameMap[T] : HTMLElementTagNameMap['div']}
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*/
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function createElement(className, tagName, appendToEl) {
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const el = document.createElement(tagName || 'div');
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if (className) {
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el.className = className;
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}
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if (appendToEl) {
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appendToEl.appendChild(el);
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}
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// @ts-expect-error
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return el;
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}
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/**
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* @param {Point} p1
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* @param {Point} p2
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*/
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function equalizePoints(p1, p2) {
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p1.x = p2.x;
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p1.y = p2.y;
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if (p2.id !== undefined) {
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p1.id = p2.id;
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}
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return p1;
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}
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/**
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* @param {Point} p
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*/
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function roundPoint(p) {
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p.x = Math.round(p.x);
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p.y = Math.round(p.y);
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}
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/**
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* Returns distance between two points.
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*
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* @param {Point} p1
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* @param {Point} p2
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*/
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function getDistanceBetween(p1, p2) {
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const x = Math.abs(p1.x - p2.x);
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const y = Math.abs(p1.y - p2.y);
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return Math.sqrt((x * x) + (y * y));
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}
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/**
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* Whether X and Y positions of points are qual
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*
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* @param {Point} p1
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* @param {Point} p2
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*/
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function pointsEqual(p1, p2) {
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return p1.x === p2.x && p1.y === p2.y;
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}
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/**
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* The float result between the min and max values.
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*
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* @param {number} val
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* @param {number} min
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* @param {number} max
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*/
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function clamp(val, min, max) {
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return Math.min(Math.max(val, min), max);
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}
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/**
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* Get transform string
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*
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* @param {number} x
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* @param {number=} y
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* @param {number=} scale
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*/
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function toTransformString(x, y, scale) {
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let propValue = 'translate3d('
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+ x + 'px,' + (y || 0) + 'px'
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+ ',0)';
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if (scale !== undefined) {
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propValue += ' scale3d('
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+ scale + ',' + scale
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+ ',1)';
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}
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return propValue;
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}
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/**
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* Apply transform:translate(x, y) scale(scale) to element
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*
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* @param {HTMLElement} el
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* @param {number} x
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* @param {number=} y
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* @param {number=} scale
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*/
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function setTransform(el, x, y, scale) {
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el.style.transform = toTransformString(x, y, scale);
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}
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const defaultCSSEasing = 'cubic-bezier(.4,0,.22,1)';
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/**
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* Apply CSS transition to element
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*
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* @param {HTMLElement} el
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* @param {string=} prop CSS property to animate
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* @param {number=} duration in ms
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* @param {string=} ease CSS easing function
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*/
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function setTransitionStyle(el, prop, duration, ease) {
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// inOut: 'cubic-bezier(.4, 0, .22, 1)', // for "toggle state" transitions
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// out: 'cubic-bezier(0, 0, .22, 1)', // for "show" transitions
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// in: 'cubic-bezier(.4, 0, 1, 1)'// for "hide" transitions
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el.style.transition = prop
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? (prop + ' ' + duration + 'ms ' + (ease || defaultCSSEasing))
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: 'none';
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}
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/**
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* Apply width and height CSS properties to element
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*
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* @param {HTMLElement} el
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* @param {string | number} w
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* @param {string | number} h
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*/
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function setWidthHeight(el, w, h) {
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el.style.width = (typeof w === 'number') ? (w + 'px') : w;
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el.style.height = (typeof h === 'number') ? (h + 'px') : h;
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}
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/**
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* @param {HTMLElement} el
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*/
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function removeTransitionStyle(el) {
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setTransitionStyle(el);
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}
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/**
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* @param {HTMLImageElement} img
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||
* @returns {Promise<HTMLImageElement | void>}
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*/
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function decodeImage(img) {
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if ('decode' in img) {
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return img.decode();
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}
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if (img.complete) {
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return Promise.resolve(img);
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}
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return new Promise((resolve, reject) => {
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img.onload = () => resolve(img);
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img.onerror = reject;
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});
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}
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/** @typedef {LOAD_STATE[keyof LOAD_STATE]} LoadState */
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/** @type {{ IDLE: 'idle'; LOADING: 'loading'; LOADED: 'loaded'; ERROR: 'error' }} */
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const LOAD_STATE = {
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IDLE: 'idle',
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LOADING: 'loading',
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LOADED: 'loaded',
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ERROR: 'error',
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};
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/**
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* Check if click or keydown event was dispatched
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* with a special key or via mouse wheel.
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*
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* @param {MouseEvent | KeyboardEvent} e
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*/
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function specialKeyUsed(e) {
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if (e.which === 2 || e.ctrlKey || e.metaKey || e.altKey || e.shiftKey) {
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return true;
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}
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}
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/**
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* Parse `gallery` or `children` options.
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*
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* @param {HTMLElement | NodeListOf<HTMLElement> | string} option
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* @param {string=} legacySelector
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* @param {HTMLElement | Document} [parent]
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* @returns HTMLElement[]
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*/
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function getElementsFromOption(option, legacySelector, parent = document) {
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/** @type {HTMLElement[]} */
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let elements = [];
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if (option instanceof Element) {
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elements = [option];
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} else if (option instanceof NodeList || Array.isArray(option)) {
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elements = Array.from(option);
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} else {
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const selector = typeof option === 'string' ? option : legacySelector;
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if (selector) {
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elements = Array.from(parent.querySelectorAll(selector));
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}
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}
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return elements;
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}
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/**
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* Check if browser is Safari
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*
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* @returns {boolean}
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*/
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function isSafari() {
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return !!(navigator.vendor && navigator.vendor.match(/apple/i));
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}
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// Detect passive event listener support
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let supportsPassive = false;
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/* eslint-disable */
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try {
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window.addEventListener('test', null, Object.defineProperty({}, 'passive', {
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get: () => {
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supportsPassive = true;
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}
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}));
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} catch (e) {}
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/* eslint-enable */
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/**
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* @typedef {Object} PoolItem
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* @prop {HTMLElement | Window | Document} target
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* @prop {string} type
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* @prop {(e: any) => void} listener
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* @prop {boolean} passive
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*/
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class DOMEvents {
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constructor() {
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/**
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* @type {PoolItem[]}
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* @private
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*/
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this._pool = [];
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}
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/**
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* Adds event listeners
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*
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* @param {HTMLElement | Window | Document} target
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* @param {string} type Can be multiple, separated by space.
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* @param {(e: any) => void} listener
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* @param {boolean=} passive
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*/
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add(target, type, listener, passive) {
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this._toggleListener(target, type, listener, passive);
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}
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/**
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* Removes event listeners
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*
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* @param {HTMLElement | Window | Document} target
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* @param {string} type
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* @param {(e: any) => void} listener
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* @param {boolean=} passive
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*/
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remove(target, type, listener, passive) {
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this._toggleListener(target, type, listener, passive, true);
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}
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/**
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* Removes all bound events
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*/
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removeAll() {
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this._pool.forEach((poolItem) => {
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this._toggleListener(
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poolItem.target,
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poolItem.type,
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poolItem.listener,
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poolItem.passive,
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true,
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true
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);
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});
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this._pool = [];
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}
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/**
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* Adds or removes event
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*
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* @param {HTMLElement | Window | Document} target
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* @param {string} type
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* @param {(e: any) => void} listener
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* @param {boolean} passive
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* @param {boolean=} unbind Whether the event should be added or removed
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* @param {boolean=} skipPool Whether events pool should be skipped
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*/
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_toggleListener(target, type, listener, passive, unbind, skipPool) {
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if (!target) {
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return;
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}
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const methodName = unbind ? 'removeEventListener' : 'addEventListener';
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const types = type.split(' ');
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types.forEach((eType) => {
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if (eType) {
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// Events pool is used to easily unbind all events when PhotoSwipe is closed,
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// so developer doesn't need to do this manually
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if (!skipPool) {
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if (unbind) {
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// Remove from the events pool
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this._pool = this._pool.filter((poolItem) => {
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return poolItem.type !== eType
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|| poolItem.listener !== listener
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|| poolItem.target !== target;
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});
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} else {
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// Add to the events pool
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this._pool.push({
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target,
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type: eType,
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listener,
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passive
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});
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}
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}
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// most PhotoSwipe events call preventDefault,
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// and we do not need browser to scroll the page
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const eventOptions = supportsPassive ? { passive: (passive || false) } : false;
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target[methodName](
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eType,
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listener,
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eventOptions
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);
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}
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});
|
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}
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||
}
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/** @typedef {import('../photoswipe.js').PhotoSwipeOptions} PhotoSwipeOptions */
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/** @typedef {import('../photoswipe.js').default} PhotoSwipe */
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/** @typedef {import('../slide/slide.js').SlideData} SlideData */
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/**
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* @param {PhotoSwipeOptions} options
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* @param {PhotoSwipe} pswp
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*/
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function getViewportSize(options, pswp) {
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if (options.getViewportSizeFn) {
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const newViewportSize = options.getViewportSizeFn(options, pswp);
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if (newViewportSize) {
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return newViewportSize;
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}
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||
}
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return {
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x: document.documentElement.clientWidth,
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// TODO: height on mobile is very incosistent due to toolbar
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||
// find a way to improve this
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//
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||
// document.documentElement.clientHeight - doesn't seem to work well
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||
y: window.innerHeight
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||
};
|
||
}
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||
|
||
/**
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||
* Parses padding option.
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||
* Supported formats:
|
||
*
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||
* // Object
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||
* padding: {
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||
* top: 0,
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* bottom: 0,
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||
* left: 0,
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||
* right: 0
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* }
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||
*
|
||
* // A function that returns the object
|
||
* paddingFn: (viewportSize, itemData, index) => {
|
||
* return {
|
||
* top: 0,
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||
* bottom: 0,
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||
* left: 0,
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||
* right: 0
|
||
* };
|
||
* }
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||
*
|
||
* // Legacy variant
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||
* paddingLeft: 0,
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||
* paddingRight: 0,
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||
* paddingTop: 0,
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||
* paddingBottom: 0,
|
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*
|
||
* @param {'left' | 'top' | 'bottom' | 'right'} prop
|
||
* @param {PhotoSwipeOptions} options PhotoSwipe options
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||
* @param {{ x?: number; y?: number }} viewportSize PhotoSwipe viewport size, for example: { x:800, y:600 }
|
||
* @param {SlideData} itemData Data about the slide
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||
* @param {number} index Slide index
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||
* @returns {number}
|
||
*/
|
||
function parsePaddingOption(prop, options, viewportSize, itemData, index) {
|
||
/** @type {number} */
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||
let paddingValue;
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||
|
||
if (options.paddingFn) {
|
||
paddingValue = options.paddingFn(viewportSize, itemData, index)[prop];
|
||
} else if (options.padding) {
|
||
paddingValue = options.padding[prop];
|
||
} else {
|
||
const legacyPropName = 'padding' + prop[0].toUpperCase() + prop.slice(1);
|
||
// @ts-expect-error
|
||
if (options[legacyPropName]) {
|
||
// @ts-expect-error
|
||
paddingValue = options[legacyPropName];
|
||
}
|
||
}
|
||
|
||
return paddingValue || 0;
|
||
}
|
||
|
||
/**
|
||
* @param {PhotoSwipeOptions} options
|
||
* @param {{ x?: number; y?: number }} viewportSize
|
||
* @param {SlideData} itemData
|
||
* @param {number} index
|
||
*/
|
||
function getPanAreaSize(options, viewportSize, itemData, index) {
|
||
return {
|
||
x: viewportSize.x
|
||
- parsePaddingOption('left', options, viewportSize, itemData, index)
|
||
- parsePaddingOption('right', options, viewportSize, itemData, index),
|
||
y: viewportSize.y
|
||
- parsePaddingOption('top', options, viewportSize, itemData, index)
|
||
- parsePaddingOption('bottom', options, viewportSize, itemData, index)
|
||
};
|
||
}
|
||
|
||
/** @typedef {import('./slide.js').default} Slide */
|
||
/** @typedef {{ x?: number; y?: number }} Point */
|
||
/** @typedef {'x' | 'y'} Axis */
|
||
|
||
/**
|
||
* Calculates minimum, maximum and initial (center) bounds of a slide
|
||
*/
|
||
class PanBounds {
|
||
/**
|
||
* @param {Slide} slide
|
||
*/
|
||
constructor(slide) {
|
||
this.slide = slide;
|
||
|
||
this.currZoomLevel = 1;
|
||
|
||
/** @type {Point} */
|
||
this.center = {};
|
||
/** @type {Point} */
|
||
this.max = {};
|
||
/** @type {Point} */
|
||
this.min = {};
|
||
|
||
this.reset();
|
||
}
|
||
|
||
/**
|
||
* _getItemBounds
|
||
*
|
||
* @param {number} currZoomLevel
|
||
*/
|
||
update(currZoomLevel) {
|
||
this.currZoomLevel = currZoomLevel;
|
||
|
||
if (!this.slide.width) {
|
||
this.reset();
|
||
} else {
|
||
this._updateAxis('x');
|
||
this._updateAxis('y');
|
||
this.slide.pswp.dispatch('calcBounds', { slide: this.slide });
|
||
}
|
||
}
|
||
|
||
/**
|
||
* _calculateItemBoundsForAxis
|
||
*
|
||
* @param {Axis} axis
|
||
*/
|
||
_updateAxis(axis) {
|
||
const { pswp } = this.slide;
|
||
const elSize = this.slide[axis === 'x' ? 'width' : 'height'] * this.currZoomLevel;
|
||
const paddingProp = axis === 'x' ? 'left' : 'top';
|
||
const padding = parsePaddingOption(
|
||
paddingProp,
|
||
pswp.options,
|
||
pswp.viewportSize,
|
||
this.slide.data,
|
||
this.slide.index
|
||
);
|
||
|
||
const panAreaSize = this.slide.panAreaSize[axis];
|
||
|
||
// Default position of element.
|
||
// By defaul it is center of viewport:
|
||
this.center[axis] = Math.round((panAreaSize - elSize) / 2) + padding;
|
||
|
||
// maximum pan position
|
||
this.max[axis] = (elSize > panAreaSize)
|
||
? Math.round(panAreaSize - elSize) + padding
|
||
: this.center[axis];
|
||
|
||
// minimum pan position
|
||
this.min[axis] = (elSize > panAreaSize)
|
||
? padding
|
||
: this.center[axis];
|
||
}
|
||
|
||
// _getZeroBounds
|
||
reset() {
|
||
this.center.x = 0;
|
||
this.center.y = 0;
|
||
this.max.x = 0;
|
||
this.max.y = 0;
|
||
this.min.x = 0;
|
||
this.min.y = 0;
|
||
}
|
||
|
||
/**
|
||
* Correct pan position if it's beyond the bounds
|
||
*
|
||
* @param {Axis} axis x or y
|
||
* @param {number} panOffset
|
||
*/
|
||
correctPan(axis, panOffset) { // checkPanBounds
|
||
return clamp(panOffset, this.max[axis], this.min[axis]);
|
||
}
|
||
}
|
||
|
||
const MAX_IMAGE_WIDTH = 4000;
|
||
|
||
/** @typedef {import('../photoswipe.js').default} PhotoSwipe */
|
||
/** @typedef {import('../photoswipe.js').PhotoSwipeOptions} PhotoSwipeOptions */
|
||
/** @typedef {import('../slide/slide.js').SlideData} SlideData */
|
||
|
||
/** @typedef {'fit' | 'fill' | number | ((zoomLevelObject: ZoomLevel) => number)} ZoomLevelOption */
|
||
|
||
/**
|
||
* Calculates zoom levels for specific slide.
|
||
* Depends on viewport size and image size.
|
||
*/
|
||
class ZoomLevel {
|
||
/**
|
||
* @param {PhotoSwipeOptions} options PhotoSwipe options
|
||
* @param {SlideData} itemData Slide data
|
||
* @param {number} index Slide index
|
||
* @param {PhotoSwipe=} pswp PhotoSwipe instance, can be undefined if not initialized yet
|
||
*/
|
||
constructor(options, itemData, index, pswp) {
|
||
this.pswp = pswp;
|
||
this.options = options;
|
||
this.itemData = itemData;
|
||
this.index = index;
|
||
}
|
||
|
||
/**
|
||
* Calculate initial, secondary and maximum zoom level for the specified slide.
|
||
*
|
||
* It should be called when either image or viewport size changes.
|
||
*
|
||
* @param {number} maxWidth
|
||
* @param {number} maxHeight
|
||
* @param {{ x?: number; y?: number }} panAreaSize
|
||
*/
|
||
update(maxWidth, maxHeight, panAreaSize) {
|
||
this.elementSize = {
|
||
x: maxWidth,
|
||
y: maxHeight
|
||
};
|
||
|
||
this.panAreaSize = panAreaSize;
|
||
|
||
const hRatio = this.panAreaSize.x / this.elementSize.x;
|
||
const vRatio = this.panAreaSize.y / this.elementSize.y;
|
||
|
||
this.fit = Math.min(1, hRatio < vRatio ? hRatio : vRatio);
|
||
this.fill = Math.min(1, hRatio > vRatio ? hRatio : vRatio);
|
||
|
||
// zoom.vFill defines zoom level of the image
|
||
// when it has 100% of viewport vertical space (height)
|
||
this.vFill = Math.min(1, vRatio);
|
||
|
||
this.initial = this._getInitial();
|
||
this.secondary = this._getSecondary();
|
||
this.max = Math.max(
|
||
this.initial,
|
||
this.secondary,
|
||
this._getMax()
|
||
);
|
||
|
||
this.min = Math.min(
|
||
this.fit,
|
||
this.initial,
|
||
this.secondary
|
||
);
|
||
|
||
if (this.pswp) {
|
||
this.pswp.dispatch('zoomLevelsUpdate', { zoomLevels: this, slideData: this.itemData });
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Parses user-defined zoom option.
|
||
*
|
||
* @private
|
||
* @param {'initial' | 'secondary' | 'max'} optionPrefix Zoom level option prefix (initial, secondary, max)
|
||
*/
|
||
_parseZoomLevelOption(optionPrefix) {
|
||
// eslint-disable-next-line max-len
|
||
const optionName = /** @type {'initialZoomLevel' | 'secondaryZoomLevel' | 'maxZoomLevel'} */ (optionPrefix + 'ZoomLevel');
|
||
const optionValue = this.options[optionName];
|
||
|
||
if (!optionValue) {
|
||
return;
|
||
}
|
||
|
||
if (typeof optionValue === 'function') {
|
||
return optionValue(this);
|
||
}
|
||
|
||
if (optionValue === 'fill') {
|
||
return this.fill;
|
||
}
|
||
|
||
if (optionValue === 'fit') {
|
||
return this.fit;
|
||
}
|
||
|
||
return Number(optionValue);
|
||
}
|
||
|
||
/**
|
||
* Get zoom level to which image will be zoomed after double-tap gesture,
|
||
* or when user clicks on zoom icon,
|
||
* or mouse-click on image itself.
|
||
* If you return 1 image will be zoomed to its original size.
|
||
*
|
||
* @private
|
||
* @return {number}
|
||
*/
|
||
_getSecondary() {
|
||
let currZoomLevel = this._parseZoomLevelOption('secondary');
|
||
|
||
if (currZoomLevel) {
|
||
return currZoomLevel;
|
||
}
|
||
|
||
// 3x of "fit" state, but not larger than original
|
||
currZoomLevel = Math.min(1, this.fit * 3);
|
||
|
||
if (currZoomLevel * this.elementSize.x > MAX_IMAGE_WIDTH) {
|
||
currZoomLevel = MAX_IMAGE_WIDTH / this.elementSize.x;
|
||
}
|
||
|
||
return currZoomLevel;
|
||
}
|
||
|
||
/**
|
||
* Get initial image zoom level.
|
||
*
|
||
* @private
|
||
* @return {number}
|
||
*/
|
||
_getInitial() {
|
||
return this._parseZoomLevelOption('initial') || this.fit;
|
||
}
|
||
|
||
/**
|
||
* Maximum zoom level when user zooms
|
||
* via zoom/pinch gesture,
|
||
* via cmd/ctrl-wheel or via trackpad.
|
||
*
|
||
* @private
|
||
* @return {number}
|
||
*/
|
||
_getMax() {
|
||
const currZoomLevel = this._parseZoomLevelOption('max');
|
||
|
||
if (currZoomLevel) {
|
||
return currZoomLevel;
|
||
}
|
||
|
||
// max zoom level is x4 from "fit state",
|
||
// used for zoom gesture and ctrl/trackpad zoom
|
||
return Math.max(1, this.fit * 4);
|
||
}
|
||
}
|
||
|
||
/** @typedef {import('../photoswipe.js').default} PhotoSwipe */
|
||
|
||
/**
|
||
* Renders and allows to control a single slide
|
||
*/
|
||
class Slide {
|
||
/**
|
||
* @param {SlideData} data
|
||
* @param {number} index
|
||
* @param {PhotoSwipe} pswp
|
||
*/
|
||
constructor(data, index, pswp) {
|
||
this.data = data;
|
||
this.index = index;
|
||
this.pswp = pswp;
|
||
this.isActive = (index === pswp.currIndex);
|
||
this.currentResolution = 0;
|
||
/** @type {Point} */
|
||
this.panAreaSize = {};
|
||
|
||
this.isFirstSlide = (this.isActive && !pswp.opener.isOpen);
|
||
|
||
this.zoomLevels = new ZoomLevel(pswp.options, data, index, pswp);
|
||
|
||
this.pswp.dispatch('gettingData', {
|
||
slide: this,
|
||
data: this.data,
|
||
index
|
||
});
|
||
|
||
this.pan = {
|
||
x: 0,
|
||
y: 0
|
||
};
|
||
|
||
this.content = this.pswp.contentLoader.getContentBySlide(this);
|
||
this.container = createElement('pswp__zoom-wrap');
|
||
|
||
this.currZoomLevel = 1;
|
||
/** @type {number} */
|
||
this.width = this.content.width;
|
||
/** @type {number} */
|
||
this.height = this.content.height;
|
||
|
||
this.bounds = new PanBounds(this);
|
||
|
||
this.prevDisplayedWidth = -1;
|
||
this.prevDisplayedHeight = -1;
|
||
|
||
this.pswp.dispatch('slideInit', { slide: this });
|
||
}
|
||
|
||
/**
|
||
* If this slide is active/current/visible
|
||
*
|
||
* @param {boolean} isActive
|
||
*/
|
||
setIsActive(isActive) {
|
||
if (isActive && !this.isActive) {
|
||
// slide just became active
|
||
this.activate();
|
||
} else if (!isActive && this.isActive) {
|
||
// slide just became non-active
|
||
this.deactivate();
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Appends slide content to DOM
|
||
*
|
||
* @param {HTMLElement} holderElement
|
||
*/
|
||
append(holderElement) {
|
||
this.holderElement = holderElement;
|
||
|
||
this.container.style.transformOrigin = '0 0';
|
||
|
||
// Slide appended to DOM
|
||
if (!this.data) {
|
||
return;
|
||
}
|
||
|
||
this.calculateSize();
|
||
|
||
this.load();
|
||
this.updateContentSize();
|
||
this.appendHeavy();
|
||
|
||
this.holderElement.appendChild(this.container);
|
||
|
||
this.zoomAndPanToInitial();
|
||
|
||
this.pswp.dispatch('firstZoomPan', { slide: this });
|
||
|
||
this.applyCurrentZoomPan();
|
||
|
||
this.pswp.dispatch('afterSetContent', { slide: this });
|
||
|
||
if (this.isActive) {
|
||
this.activate();
|
||
}
|
||
}
|
||
|
||
load() {
|
||
this.content.load();
|
||
this.pswp.dispatch('slideLoad', { slide: this });
|
||
}
|
||
|
||
/**
|
||
* Append "heavy" DOM elements
|
||
*
|
||
* This may depend on a type of slide,
|
||
* but generally these are large images.
|
||
*/
|
||
appendHeavy() {
|
||
const { pswp } = this;
|
||
const appendHeavyNearby = true; // todo
|
||
|
||
// Avoid appending heavy elements during animations
|
||
if (this.heavyAppended
|
||
|| !pswp.opener.isOpen
|
||
|| pswp.mainScroll.isShifted()
|
||
|| (!this.isActive && !appendHeavyNearby)) {
|
||
return;
|
||
}
|
||
|
||
if (this.pswp.dispatch('appendHeavy', { slide: this }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
this.heavyAppended = true;
|
||
|
||
this.content.append();
|
||
|
||
this.pswp.dispatch('appendHeavyContent', { slide: this });
|
||
}
|
||
|
||
/**
|
||
* Triggered when this slide is active (selected).
|
||
*
|
||
* If it's part of opening/closing transition -
|
||
* activate() will trigger after the transition is ended.
|
||
*/
|
||
activate() {
|
||
this.isActive = true;
|
||
this.appendHeavy();
|
||
this.content.activate();
|
||
this.pswp.dispatch('slideActivate', { slide: this });
|
||
}
|
||
|
||
/**
|
||
* Triggered when this slide becomes inactive.
|
||
*
|
||
* Slide can become inactive only after it was active.
|
||
*/
|
||
deactivate() {
|
||
this.isActive = false;
|
||
this.content.deactivate();
|
||
|
||
if (this.currZoomLevel !== this.zoomLevels.initial) {
|
||
// allow filtering
|
||
this.calculateSize();
|
||
}
|
||
|
||
// reset zoom level
|
||
this.currentResolution = 0;
|
||
this.zoomAndPanToInitial();
|
||
this.applyCurrentZoomPan();
|
||
this.updateContentSize();
|
||
|
||
this.pswp.dispatch('slideDeactivate', { slide: this });
|
||
}
|
||
|
||
/**
|
||
* The slide should destroy itself, it will never be used again.
|
||
* (unbind all events and destroy internal components)
|
||
*/
|
||
destroy() {
|
||
this.content.hasSlide = false;
|
||
this.content.remove();
|
||
this.container.remove();
|
||
this.pswp.dispatch('slideDestroy', { slide: this });
|
||
}
|
||
|
||
resize() {
|
||
if (this.currZoomLevel === this.zoomLevels.initial || !this.isActive) {
|
||
// Keep initial zoom level if it was before the resize,
|
||
// as well as when this slide is not active
|
||
|
||
// Reset position and scale to original state
|
||
this.calculateSize();
|
||
this.currentResolution = 0;
|
||
this.zoomAndPanToInitial();
|
||
this.applyCurrentZoomPan();
|
||
this.updateContentSize();
|
||
} else {
|
||
// readjust pan position if it's beyond the bounds
|
||
this.calculateSize();
|
||
this.bounds.update(this.currZoomLevel);
|
||
this.panTo(this.pan.x, this.pan.y);
|
||
}
|
||
}
|
||
|
||
|
||
/**
|
||
* Apply size to current slide content,
|
||
* based on the current resolution and scale.
|
||
*
|
||
* @param {boolean=} force if size should be updated even if dimensions weren't changed
|
||
*/
|
||
updateContentSize(force) {
|
||
// Use initial zoom level
|
||
// if resolution is not defined (user didn't zoom yet)
|
||
const scaleMultiplier = this.currentResolution || this.zoomLevels.initial;
|
||
|
||
if (!scaleMultiplier) {
|
||
return;
|
||
}
|
||
|
||
const width = Math.round(this.width * scaleMultiplier) || this.pswp.viewportSize.x;
|
||
const height = Math.round(this.height * scaleMultiplier) || this.pswp.viewportSize.y;
|
||
|
||
if (!this.sizeChanged(width, height) && !force) {
|
||
return;
|
||
}
|
||
this.content.setDisplayedSize(width, height);
|
||
}
|
||
|
||
/**
|
||
* @param {number} width
|
||
* @param {number} height
|
||
*/
|
||
sizeChanged(width, height) {
|
||
if (width !== this.prevDisplayedWidth
|
||
|| height !== this.prevDisplayedHeight) {
|
||
this.prevDisplayedWidth = width;
|
||
this.prevDisplayedHeight = height;
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
getPlaceholderElement() {
|
||
if (this.content.placeholder) {
|
||
return this.content.placeholder.element;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Zoom current slide image to...
|
||
*
|
||
* @param {number} destZoomLevel Destination zoom level.
|
||
* @param {{ x?: number; y?: number }} centerPoint
|
||
* Transform origin center point, or false if viewport center should be used.
|
||
* @param {number | false} [transitionDuration] Transition duration, may be set to 0.
|
||
* @param {boolean=} ignoreBounds Minimum and maximum zoom levels will be ignored.
|
||
* @return {boolean=} Returns true if animated.
|
||
*/
|
||
zoomTo(destZoomLevel, centerPoint, transitionDuration, ignoreBounds) {
|
||
const { pswp } = this;
|
||
if (!this.isZoomable()
|
||
|| pswp.mainScroll.isShifted()) {
|
||
return;
|
||
}
|
||
|
||
pswp.dispatch('beforeZoomTo', {
|
||
destZoomLevel, centerPoint, transitionDuration
|
||
});
|
||
|
||
// stop all pan and zoom transitions
|
||
pswp.animations.stopAllPan();
|
||
|
||
// if (!centerPoint) {
|
||
// centerPoint = pswp.getViewportCenterPoint();
|
||
// }
|
||
|
||
const prevZoomLevel = this.currZoomLevel;
|
||
|
||
if (!ignoreBounds) {
|
||
destZoomLevel = clamp(destZoomLevel, this.zoomLevels.min, this.zoomLevels.max);
|
||
}
|
||
|
||
// if (transitionDuration === undefined) {
|
||
// transitionDuration = this.pswp.options.zoomAnimationDuration;
|
||
// }
|
||
|
||
this.setZoomLevel(destZoomLevel);
|
||
this.pan.x = this.calculateZoomToPanOffset('x', centerPoint, prevZoomLevel);
|
||
this.pan.y = this.calculateZoomToPanOffset('y', centerPoint, prevZoomLevel);
|
||
roundPoint(this.pan);
|
||
|
||
const finishTransition = () => {
|
||
this._setResolution(destZoomLevel);
|
||
this.applyCurrentZoomPan();
|
||
};
|
||
|
||
if (!transitionDuration) {
|
||
finishTransition();
|
||
} else {
|
||
pswp.animations.startTransition({
|
||
isPan: true,
|
||
name: 'zoomTo',
|
||
target: this.container,
|
||
transform: this.getCurrentTransform(),
|
||
onComplete: finishTransition,
|
||
duration: transitionDuration,
|
||
easing: pswp.options.easing
|
||
});
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {{ x?: number, y?: number }} [centerPoint]
|
||
*/
|
||
toggleZoom(centerPoint) {
|
||
this.zoomTo(
|
||
this.currZoomLevel === this.zoomLevels.initial
|
||
? this.zoomLevels.secondary : this.zoomLevels.initial,
|
||
centerPoint,
|
||
this.pswp.options.zoomAnimationDuration
|
||
);
|
||
}
|
||
|
||
/**
|
||
* Updates zoom level property and recalculates new pan bounds,
|
||
* unlike zoomTo it does not apply transform (use applyCurrentZoomPan)
|
||
*
|
||
* @param {number} currZoomLevel
|
||
*/
|
||
setZoomLevel(currZoomLevel) {
|
||
this.currZoomLevel = currZoomLevel;
|
||
this.bounds.update(this.currZoomLevel);
|
||
}
|
||
|
||
/**
|
||
* Get pan position after zoom at a given `point`.
|
||
*
|
||
* Always call setZoomLevel(newZoomLevel) beforehand to recalculate
|
||
* pan bounds according to the new zoom level.
|
||
*
|
||
* @param {'x' | 'y'} axis
|
||
* @param {{ x?: number; y?: number }} [point]
|
||
* point based on which zoom is performed, usually refers to the current mouse position,
|
||
* if false - viewport center will be used.
|
||
* @param {number=} prevZoomLevel Zoom level before new zoom was applied.
|
||
*/
|
||
calculateZoomToPanOffset(axis, point, prevZoomLevel) {
|
||
const totalPanDistance = this.bounds.max[axis] - this.bounds.min[axis];
|
||
if (totalPanDistance === 0) {
|
||
return this.bounds.center[axis];
|
||
}
|
||
|
||
if (!point) {
|
||
point = this.pswp.getViewportCenterPoint();
|
||
}
|
||
|
||
const zoomFactor = this.currZoomLevel / prevZoomLevel;
|
||
return this.bounds.correctPan(
|
||
axis,
|
||
(this.pan[axis] - point[axis]) * zoomFactor + point[axis]
|
||
);
|
||
}
|
||
|
||
/**
|
||
* Apply pan and keep it within bounds.
|
||
*
|
||
* @param {number} panX
|
||
* @param {number} panY
|
||
*/
|
||
panTo(panX, panY) {
|
||
this.pan.x = this.bounds.correctPan('x', panX);
|
||
this.pan.y = this.bounds.correctPan('y', panY);
|
||
this.applyCurrentZoomPan();
|
||
}
|
||
|
||
/**
|
||
* If the slide in the current state can be panned by the user
|
||
*/
|
||
isPannable() {
|
||
return this.width && (this.currZoomLevel > this.zoomLevels.fit);
|
||
}
|
||
|
||
/**
|
||
* If the slide can be zoomed
|
||
*/
|
||
isZoomable() {
|
||
return this.width && this.content.isZoomable();
|
||
}
|
||
|
||
/**
|
||
* Apply transform and scale based on
|
||
* the current pan position (this.pan) and zoom level (this.currZoomLevel)
|
||
*/
|
||
applyCurrentZoomPan() {
|
||
this._applyZoomTransform(this.pan.x, this.pan.y, this.currZoomLevel);
|
||
if (this === this.pswp.currSlide) {
|
||
this.pswp.dispatch('zoomPanUpdate', { slide: this });
|
||
}
|
||
}
|
||
|
||
zoomAndPanToInitial() {
|
||
this.currZoomLevel = this.zoomLevels.initial;
|
||
|
||
// pan according to the zoom level
|
||
this.bounds.update(this.currZoomLevel);
|
||
equalizePoints(this.pan, this.bounds.center);
|
||
this.pswp.dispatch('initialZoomPan', { slide: this });
|
||
}
|
||
|
||
/**
|
||
* Set translate and scale based on current resolution
|
||
*
|
||
* @param {number} x
|
||
* @param {number} y
|
||
* @param {number} zoom
|
||
*/
|
||
_applyZoomTransform(x, y, zoom) {
|
||
zoom /= this.currentResolution || this.zoomLevels.initial;
|
||
setTransform(this.container, x, y, zoom);
|
||
}
|
||
|
||
calculateSize() {
|
||
const { pswp } = this;
|
||
|
||
equalizePoints(
|
||
this.panAreaSize,
|
||
getPanAreaSize(pswp.options, pswp.viewportSize, this.data, this.index)
|
||
);
|
||
|
||
this.zoomLevels.update(this.width, this.height, this.panAreaSize);
|
||
|
||
pswp.dispatch('calcSlideSize', {
|
||
slide: this
|
||
});
|
||
}
|
||
|
||
getCurrentTransform() {
|
||
const scale = this.currZoomLevel / (this.currentResolution || this.zoomLevels.initial);
|
||
return toTransformString(this.pan.x, this.pan.y, scale);
|
||
}
|
||
|
||
/**
|
||
* Set resolution and re-render the image.
|
||
*
|
||
* For example, if the real image size is 2000x1500,
|
||
* and resolution is 0.5 - it will be rendered as 1000x750.
|
||
*
|
||
* Image with zoom level 2 and resolution 0.5 is
|
||
* the same as image with zoom level 1 and resolution 1.
|
||
*
|
||
* Used to optimize animations and make
|
||
* sure that browser renders image in highest quality.
|
||
* Also used by responsive images to load the correct one.
|
||
*
|
||
* @param {number} newResolution
|
||
*/
|
||
_setResolution(newResolution) {
|
||
if (newResolution === this.currentResolution) {
|
||
return;
|
||
}
|
||
|
||
this.currentResolution = newResolution;
|
||
this.updateContentSize();
|
||
|
||
this.pswp.dispatch('resolutionChanged');
|
||
}
|
||
}
|
||
|
||
/** @typedef {import('../photoswipe.js').Point} Point */
|
||
/** @typedef {import('./gestures.js').default} Gestures */
|
||
|
||
const PAN_END_FRICTION = 0.35;
|
||
const VERTICAL_DRAG_FRICTION = 0.6;
|
||
|
||
// 1 corresponds to the third of viewport height
|
||
const MIN_RATIO_TO_CLOSE = 0.4;
|
||
|
||
// Minimum speed required to navigate
|
||
// to next or previous slide
|
||
const MIN_NEXT_SLIDE_SPEED = 0.5;
|
||
|
||
/**
|
||
* @param {number} initialVelocity
|
||
* @param {number} decelerationRate
|
||
*/
|
||
function project(initialVelocity, decelerationRate) {
|
||
return initialVelocity * decelerationRate / (1 - decelerationRate);
|
||
}
|
||
|
||
/**
|
||
* Handles single pointer dragging
|
||
*/
|
||
class DragHandler {
|
||
/**
|
||
* @param {Gestures} gestures
|
||
*/
|
||
constructor(gestures) {
|
||
this.gestures = gestures;
|
||
this.pswp = gestures.pswp;
|
||
/** @type {Point} */
|
||
this.startPan = {};
|
||
}
|
||
|
||
start() {
|
||
equalizePoints(this.startPan, this.pswp.currSlide.pan);
|
||
this.pswp.animations.stopAll();
|
||
}
|
||
|
||
change() {
|
||
const { p1, prevP1, dragAxis, pswp } = this.gestures;
|
||
const { currSlide } = pswp;
|
||
|
||
if (dragAxis === 'y'
|
||
&& pswp.options.closeOnVerticalDrag
|
||
&& currSlide.currZoomLevel <= currSlide.zoomLevels.fit
|
||
&& !this.gestures.isMultitouch) {
|
||
// Handle vertical drag to close
|
||
const panY = currSlide.pan.y + (p1.y - prevP1.y);
|
||
if (!pswp.dispatch('verticalDrag', { panY }).defaultPrevented) {
|
||
this._setPanWithFriction('y', panY, VERTICAL_DRAG_FRICTION);
|
||
const bgOpacity = 1 - Math.abs(this._getVerticalDragRatio(currSlide.pan.y));
|
||
pswp.applyBgOpacity(bgOpacity);
|
||
currSlide.applyCurrentZoomPan();
|
||
}
|
||
} else {
|
||
const mainScrollChanged = this._panOrMoveMainScroll('x');
|
||
if (!mainScrollChanged) {
|
||
this._panOrMoveMainScroll('y');
|
||
|
||
roundPoint(currSlide.pan);
|
||
currSlide.applyCurrentZoomPan();
|
||
}
|
||
}
|
||
}
|
||
|
||
end() {
|
||
const { pswp, velocity } = this.gestures;
|
||
const { mainScroll } = pswp;
|
||
let indexDiff = 0;
|
||
|
||
pswp.animations.stopAll();
|
||
|
||
// Handle main scroll if it's shifted
|
||
if (mainScroll.isShifted()) {
|
||
// Position of the main scroll relative to the viewport
|
||
const mainScrollShiftDiff = mainScroll.x - mainScroll.getCurrSlideX();
|
||
|
||
// Ratio between 0 and 1:
|
||
// 0 - slide is not visible at all,
|
||
// 0.5 - half of the slide is vicible
|
||
// 1 - slide is fully visible
|
||
const currentSlideVisibilityRatio = (mainScrollShiftDiff / pswp.viewportSize.x);
|
||
|
||
// Go next slide.
|
||
//
|
||
// - if velocity and its direction is matched
|
||
// and we see at least tiny part of the next slide
|
||
//
|
||
// - or if we see less than 50% of the current slide
|
||
// and velocity is close to 0
|
||
//
|
||
if ((velocity.x < -MIN_NEXT_SLIDE_SPEED && currentSlideVisibilityRatio < 0)
|
||
|| (velocity.x < 0.1 && currentSlideVisibilityRatio < -0.5)) {
|
||
// Go to next slide
|
||
indexDiff = 1;
|
||
velocity.x = Math.min(velocity.x, 0);
|
||
} else if ((velocity.x > MIN_NEXT_SLIDE_SPEED && currentSlideVisibilityRatio > 0)
|
||
|| (velocity.x > -0.1 && currentSlideVisibilityRatio > 0.5)) {
|
||
// Go to prev slide
|
||
indexDiff = -1;
|
||
velocity.x = Math.max(velocity.x, 0);
|
||
}
|
||
|
||
mainScroll.moveIndexBy(indexDiff, true, velocity.x);
|
||
}
|
||
|
||
// Restore zoom level
|
||
if (pswp.currSlide.currZoomLevel > pswp.currSlide.zoomLevels.max
|
||
|| this.gestures.isMultitouch) {
|
||
this.gestures.zoomLevels.correctZoomPan(true);
|
||
} else {
|
||
// we run two animations instead of one,
|
||
// as each axis has own pan boundaries and thus different spring function
|
||
// (correctZoomPan does not have this functionality,
|
||
// it animates all properties with single timing function)
|
||
this._finishPanGestureForAxis('x');
|
||
this._finishPanGestureForAxis('y');
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @private
|
||
* @param {'x' | 'y'} axis
|
||
*/
|
||
_finishPanGestureForAxis(axis) {
|
||
const { pswp } = this;
|
||
const { currSlide } = pswp;
|
||
const { velocity } = this.gestures;
|
||
const { pan, bounds } = currSlide;
|
||
const panPos = pan[axis];
|
||
const restoreBgOpacity = (pswp.bgOpacity < 1 && axis === 'y');
|
||
|
||
// 0.995 means - scroll view loses 0.5% of its velocity per millisecond
|
||
// Inceasing this number will reduce travel distance
|
||
const decelerationRate = 0.995; // 0.99
|
||
|
||
// Pan position if there is no bounds
|
||
const projectedPosition = panPos + project(velocity[axis], decelerationRate);
|
||
|
||
if (restoreBgOpacity) {
|
||
const vDragRatio = this._getVerticalDragRatio(panPos);
|
||
const projectedVDragRatio = this._getVerticalDragRatio(projectedPosition);
|
||
|
||
// If we are above and moving upwards,
|
||
// or if we are below and moving downwards
|
||
if ((vDragRatio < 0 && projectedVDragRatio < -MIN_RATIO_TO_CLOSE)
|
||
|| (vDragRatio > 0 && projectedVDragRatio > MIN_RATIO_TO_CLOSE)) {
|
||
pswp.close();
|
||
return;
|
||
}
|
||
}
|
||
|
||
// Pan position with corrected bounds
|
||
const correctedPanPosition = bounds.correctPan(axis, projectedPosition);
|
||
|
||
// Exit if pan position should not be changed
|
||
// or if speed it too low
|
||
if (panPos === correctedPanPosition) {
|
||
return;
|
||
}
|
||
|
||
// Overshoot if the final position is out of pan bounds
|
||
const dampingRatio = (correctedPanPosition === projectedPosition) ? 1 : 0.82;
|
||
|
||
const initialBgOpacity = pswp.bgOpacity;
|
||
const totalPanDist = correctedPanPosition - panPos;
|
||
|
||
pswp.animations.startSpring({
|
||
name: 'panGesture' + axis,
|
||
isPan: true,
|
||
start: panPos,
|
||
end: correctedPanPosition,
|
||
velocity: velocity[axis],
|
||
dampingRatio,
|
||
onUpdate: (pos) => {
|
||
// Animate opacity of background relative to Y pan position of an image
|
||
if (restoreBgOpacity && pswp.bgOpacity < 1) {
|
||
// 0 - start of animation, 1 - end of animation
|
||
const animationProgressRatio = 1 - (correctedPanPosition - pos) / totalPanDist;
|
||
|
||
// We clamp opacity to keep it between 0 and 1.
|
||
// As progress ratio can be larger than 1 due to overshoot,
|
||
// and we do not want to bounce opacity.
|
||
pswp.applyBgOpacity(clamp(
|
||
initialBgOpacity + (1 - initialBgOpacity) * animationProgressRatio,
|
||
0,
|
||
1
|
||
));
|
||
}
|
||
|
||
pan[axis] = Math.floor(pos);
|
||
currSlide.applyCurrentZoomPan();
|
||
},
|
||
});
|
||
}
|
||
|
||
/**
|
||
* Update position of the main scroll,
|
||
* or/and update pan position of the current slide.
|
||
*
|
||
* Should return true if it changes (or can change) main scroll.
|
||
*
|
||
* @private
|
||
* @param {'x' | 'y'} axis
|
||
*/
|
||
_panOrMoveMainScroll(axis) {
|
||
const { p1, pswp, dragAxis, prevP1, isMultitouch } = this.gestures;
|
||
const { currSlide, mainScroll } = pswp;
|
||
const delta = (p1[axis] - prevP1[axis]);
|
||
const newMainScrollX = mainScroll.x + delta;
|
||
|
||
if (!delta) {
|
||
return;
|
||
}
|
||
|
||
// Always move main scroll if image can not be panned
|
||
if (axis === 'x' && !currSlide.isPannable() && !isMultitouch) {
|
||
mainScroll.moveTo(newMainScrollX, true);
|
||
return true; // changed main scroll
|
||
}
|
||
|
||
const { bounds } = currSlide;
|
||
const newPan = currSlide.pan[axis] + delta;
|
||
|
||
if (pswp.options.allowPanToNext
|
||
&& dragAxis === 'x'
|
||
&& axis === 'x'
|
||
&& !isMultitouch) {
|
||
const currSlideMainScrollX = mainScroll.getCurrSlideX();
|
||
|
||
// Position of the main scroll relative to the viewport
|
||
const mainScrollShiftDiff = mainScroll.x - currSlideMainScrollX;
|
||
|
||
const isLeftToRight = delta > 0;
|
||
const isRightToLeft = !isLeftToRight;
|
||
|
||
if (newPan > bounds.min[axis] && isLeftToRight) {
|
||
// Panning from left to right, beyond the left edge
|
||
|
||
// Wether the image was at minimum pan position (or less)
|
||
// when this drag gesture started.
|
||
// Minimum pan position refers to the left edge of the image.
|
||
const wasAtMinPanPosition = (bounds.min[axis] <= this.startPan[axis]);
|
||
|
||
if (wasAtMinPanPosition) {
|
||
mainScroll.moveTo(newMainScrollX, true);
|
||
return true;
|
||
} else {
|
||
this._setPanWithFriction(axis, newPan);
|
||
//currSlide.pan[axis] = newPan;
|
||
}
|
||
} else if (newPan < bounds.max[axis] && isRightToLeft) {
|
||
// Paning from right to left, beyond the right edge
|
||
|
||
// Maximum pan position refers to the right edge of the image.
|
||
const wasAtMaxPanPosition = (this.startPan[axis] <= bounds.max[axis]);
|
||
|
||
if (wasAtMaxPanPosition) {
|
||
mainScroll.moveTo(newMainScrollX, true);
|
||
return true;
|
||
} else {
|
||
this._setPanWithFriction(axis, newPan);
|
||
//currSlide.pan[axis] = newPan;
|
||
}
|
||
} else {
|
||
// If main scroll is shifted
|
||
if (mainScrollShiftDiff !== 0) {
|
||
// If main scroll is shifted right
|
||
if (mainScrollShiftDiff > 0 /*&& isRightToLeft*/) {
|
||
mainScroll.moveTo(Math.max(newMainScrollX, currSlideMainScrollX), true);
|
||
return true;
|
||
} else if (mainScrollShiftDiff < 0 /*&& isLeftToRight*/) {
|
||
// Main scroll is shifted left (Position is less than 0 comparing to the viewport 0)
|
||
mainScroll.moveTo(Math.min(newMainScrollX, currSlideMainScrollX), true);
|
||
return true;
|
||
}
|
||
} else {
|
||
// We are within pan bounds, so just pan
|
||
this._setPanWithFriction(axis, newPan);
|
||
}
|
||
}
|
||
} else {
|
||
if (axis === 'y') {
|
||
// Do not pan vertically if main scroll is shifted o
|
||
if (!mainScroll.isShifted() && bounds.min.y !== bounds.max.y) {
|
||
this._setPanWithFriction(axis, newPan);
|
||
}
|
||
} else {
|
||
this._setPanWithFriction(axis, newPan);
|
||
}
|
||
}
|
||
}
|
||
//
|
||
// If we move above - the ratio is negative
|
||
// If we move below the ratio is positive
|
||
|
||
/**
|
||
* Relation between pan Y position and third of viewport height.
|
||
*
|
||
* When we are at initial position (center bounds) - the ratio is 0,
|
||
* if position is shifted upwards - the ratio is negative,
|
||
* if position is shifted downwards - the ratio is positive.
|
||
*
|
||
* @private
|
||
* @param {number} panY The current pan Y position.
|
||
*/
|
||
_getVerticalDragRatio(panY) {
|
||
return (panY - this.pswp.currSlide.bounds.center.y)
|
||
/ (this.pswp.viewportSize.y / 3);
|
||
}
|
||
|
||
/**
|
||
* Set pan position of the current slide.
|
||
* Apply friction if the position is beyond the pan bounds,
|
||
* or if custom friction is defined.
|
||
*
|
||
* @private
|
||
* @param {'x' | 'y'} axis
|
||
* @param {number} potentialPan
|
||
* @param {number=} customFriction (0.1 - 1)
|
||
*/
|
||
_setPanWithFriction(axis, potentialPan, customFriction) {
|
||
const { pan, bounds } = this.pswp.currSlide;
|
||
const correctedPan = bounds.correctPan(axis, potentialPan);
|
||
// If we are out of pan bounds
|
||
if (correctedPan !== potentialPan || customFriction) {
|
||
const delta = Math.round(potentialPan - pan[axis]);
|
||
pan[axis] += delta * (customFriction || PAN_END_FRICTION);
|
||
} else {
|
||
pan[axis] = potentialPan;
|
||
}
|
||
}
|
||
}
|
||
|
||
/** @typedef {import('../photoswipe.js').Point} Point */
|
||
/** @typedef {import('./gestures.js').default} Gestures */
|
||
|
||
const UPPER_ZOOM_FRICTION = 0.05;
|
||
const LOWER_ZOOM_FRICTION = 0.15;
|
||
|
||
|
||
/**
|
||
* Get center point between two points
|
||
*
|
||
* @param {Point} p
|
||
* @param {Point} p1
|
||
* @param {Point} p2
|
||
*/
|
||
function getZoomPointsCenter(p, p1, p2) {
|
||
p.x = (p1.x + p2.x) / 2;
|
||
p.y = (p1.y + p2.y) / 2;
|
||
return p;
|
||
}
|
||
|
||
class ZoomHandler {
|
||
/**
|
||
* @param {Gestures} gestures
|
||
*/
|
||
constructor(gestures) {
|
||
this.gestures = gestures;
|
||
this.pswp = this.gestures.pswp;
|
||
/** @type {Point} */
|
||
this._startPan = {};
|
||
|
||
/** @type {Point} */
|
||
this._startZoomPoint = {};
|
||
/** @type {Point} */
|
||
this._zoomPoint = {};
|
||
}
|
||
|
||
start() {
|
||
this._startZoomLevel = this.pswp.currSlide.currZoomLevel;
|
||
equalizePoints(this._startPan, this.pswp.currSlide.pan);
|
||
this.pswp.animations.stopAllPan();
|
||
this._wasOverFitZoomLevel = false;
|
||
}
|
||
|
||
change() {
|
||
const { p1, startP1, p2, startP2, pswp } = this.gestures;
|
||
const { currSlide } = pswp;
|
||
const minZoomLevel = currSlide.zoomLevels.min;
|
||
const maxZoomLevel = currSlide.zoomLevels.max;
|
||
|
||
if (!currSlide.isZoomable() || pswp.mainScroll.isShifted()) {
|
||
return;
|
||
}
|
||
|
||
getZoomPointsCenter(this._startZoomPoint, startP1, startP2);
|
||
getZoomPointsCenter(this._zoomPoint, p1, p2);
|
||
|
||
let currZoomLevel = (1 / getDistanceBetween(startP1, startP2))
|
||
* getDistanceBetween(p1, p2)
|
||
* this._startZoomLevel;
|
||
|
||
// slightly over the zoom.fit
|
||
if (currZoomLevel > currSlide.zoomLevels.initial + (currSlide.zoomLevels.initial / 15)) {
|
||
this._wasOverFitZoomLevel = true;
|
||
}
|
||
|
||
if (currZoomLevel < minZoomLevel) {
|
||
if (pswp.options.pinchToClose
|
||
&& !this._wasOverFitZoomLevel
|
||
&& this._startZoomLevel <= currSlide.zoomLevels.initial) {
|
||
// fade out background if zooming out
|
||
const bgOpacity = 1 - ((minZoomLevel - currZoomLevel) / (minZoomLevel / 1.2));
|
||
if (!pswp.dispatch('pinchClose', { bgOpacity }).defaultPrevented) {
|
||
pswp.applyBgOpacity(bgOpacity);
|
||
}
|
||
} else {
|
||
// Apply the friction if zoom level is below the min
|
||
currZoomLevel = minZoomLevel - (minZoomLevel - currZoomLevel) * LOWER_ZOOM_FRICTION;
|
||
}
|
||
} else if (currZoomLevel > maxZoomLevel) {
|
||
// Apply the friction if zoom level is above the max
|
||
currZoomLevel = maxZoomLevel + (currZoomLevel - maxZoomLevel) * UPPER_ZOOM_FRICTION;
|
||
}
|
||
|
||
currSlide.pan.x = this._calculatePanForZoomLevel('x', currZoomLevel);
|
||
currSlide.pan.y = this._calculatePanForZoomLevel('y', currZoomLevel);
|
||
|
||
currSlide.setZoomLevel(currZoomLevel);
|
||
currSlide.applyCurrentZoomPan();
|
||
}
|
||
|
||
end() {
|
||
const { pswp } = this;
|
||
const { currSlide } = pswp;
|
||
if (currSlide.currZoomLevel < currSlide.zoomLevels.initial
|
||
&& !this._wasOverFitZoomLevel
|
||
&& pswp.options.pinchToClose) {
|
||
pswp.close();
|
||
} else {
|
||
this.correctZoomPan();
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @private
|
||
* @param {'x' | 'y'} axis
|
||
* @param {number} currZoomLevel
|
||
*/
|
||
_calculatePanForZoomLevel(axis, currZoomLevel) {
|
||
const zoomFactor = currZoomLevel / this._startZoomLevel;
|
||
return this._zoomPoint[axis]
|
||
- ((this._startZoomPoint[axis] - this._startPan[axis]) * zoomFactor);
|
||
}
|
||
|
||
/**
|
||
* Correct currZoomLevel and pan if they are
|
||
* beyond minimum or maximum values.
|
||
* With animation.
|
||
*
|
||
* @param {boolean=} ignoreGesture
|
||
* Wether gesture coordinates should be ignored when calculating destination pan position.
|
||
*/
|
||
correctZoomPan(ignoreGesture) {
|
||
const { pswp } = this;
|
||
const { currSlide } = pswp;
|
||
|
||
if (!currSlide.isZoomable()) {
|
||
return;
|
||
}
|
||
|
||
if (this._zoomPoint.x === undefined) {
|
||
ignoreGesture = true;
|
||
}
|
||
|
||
const prevZoomLevel = currSlide.currZoomLevel;
|
||
|
||
/** @type {number} */
|
||
let destinationZoomLevel;
|
||
let currZoomLevelNeedsChange = true;
|
||
|
||
if (prevZoomLevel < currSlide.zoomLevels.initial) {
|
||
destinationZoomLevel = currSlide.zoomLevels.initial;
|
||
// zoom to min
|
||
} else if (prevZoomLevel > currSlide.zoomLevels.max) {
|
||
destinationZoomLevel = currSlide.zoomLevels.max;
|
||
// zoom to max
|
||
} else {
|
||
currZoomLevelNeedsChange = false;
|
||
destinationZoomLevel = prevZoomLevel;
|
||
}
|
||
|
||
const initialBgOpacity = pswp.bgOpacity;
|
||
const restoreBgOpacity = pswp.bgOpacity < 1;
|
||
|
||
const initialPan = equalizePoints({}, currSlide.pan);
|
||
let destinationPan = equalizePoints({}, initialPan);
|
||
|
||
if (ignoreGesture) {
|
||
this._zoomPoint.x = 0;
|
||
this._zoomPoint.y = 0;
|
||
this._startZoomPoint.x = 0;
|
||
this._startZoomPoint.y = 0;
|
||
this._startZoomLevel = prevZoomLevel;
|
||
equalizePoints(this._startPan, initialPan);
|
||
}
|
||
|
||
if (currZoomLevelNeedsChange) {
|
||
destinationPan = {
|
||
x: this._calculatePanForZoomLevel('x', destinationZoomLevel),
|
||
y: this._calculatePanForZoomLevel('y', destinationZoomLevel)
|
||
};
|
||
}
|
||
|
||
// set zoom level, so pan bounds are updated according to it
|
||
currSlide.setZoomLevel(destinationZoomLevel);
|
||
|
||
destinationPan = {
|
||
x: currSlide.bounds.correctPan('x', destinationPan.x),
|
||
y: currSlide.bounds.correctPan('y', destinationPan.y)
|
||
};
|
||
|
||
// return zoom level and its bounds to initial
|
||
currSlide.setZoomLevel(prevZoomLevel);
|
||
|
||
let panNeedsChange = true;
|
||
if (pointsEqual(destinationPan, initialPan)) {
|
||
panNeedsChange = false;
|
||
}
|
||
|
||
if (!panNeedsChange && !currZoomLevelNeedsChange && !restoreBgOpacity) {
|
||
// update resolution after gesture
|
||
currSlide._setResolution(destinationZoomLevel);
|
||
currSlide.applyCurrentZoomPan();
|
||
|
||
// nothing to animate
|
||
return;
|
||
}
|
||
|
||
pswp.animations.stopAllPan();
|
||
|
||
pswp.animations.startSpring({
|
||
isPan: true,
|
||
start: 0,
|
||
end: 1000,
|
||
velocity: 0,
|
||
dampingRatio: 1,
|
||
naturalFrequency: 40,
|
||
onUpdate: (now) => {
|
||
now /= 1000; // 0 - start, 1 - end
|
||
|
||
if (panNeedsChange || currZoomLevelNeedsChange) {
|
||
if (panNeedsChange) {
|
||
currSlide.pan.x = initialPan.x + (destinationPan.x - initialPan.x) * now;
|
||
currSlide.pan.y = initialPan.y + (destinationPan.y - initialPan.y) * now;
|
||
}
|
||
|
||
if (currZoomLevelNeedsChange) {
|
||
const newZoomLevel = prevZoomLevel
|
||
+ (destinationZoomLevel - prevZoomLevel) * now;
|
||
currSlide.setZoomLevel(newZoomLevel);
|
||
}
|
||
|
||
currSlide.applyCurrentZoomPan();
|
||
}
|
||
|
||
// Restore background opacity
|
||
if (restoreBgOpacity && pswp.bgOpacity < 1) {
|
||
// We clamp opacity to keep it between 0 and 1.
|
||
// As progress ratio can be larger than 1 due to overshoot,
|
||
// and we do not want to bounce opacity.
|
||
pswp.applyBgOpacity(clamp(
|
||
initialBgOpacity + (1 - initialBgOpacity) * now, 0, 1
|
||
));
|
||
}
|
||
},
|
||
onComplete: () => {
|
||
// update resolution after transition ends
|
||
currSlide._setResolution(destinationZoomLevel);
|
||
currSlide.applyCurrentZoomPan();
|
||
}
|
||
});
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @template T
|
||
* @template P
|
||
* @typedef {import('../types.js').AddPostfix<T, P>} AddPostfix<T, P>
|
||
*/
|
||
|
||
/** @typedef {import('./gestures.js').default} Gestures */
|
||
|
||
/** @typedef {'imageClick' | 'bgClick' | 'tap' | 'doubleTap'} Actions */
|
||
/** @typedef {{ x?: number; y?: number }} Point */
|
||
|
||
/**
|
||
* Whether the tap was performed on the main slide
|
||
* (rather than controls or caption).
|
||
*
|
||
* @param {PointerEvent} event
|
||
*/
|
||
function didTapOnMainContent(event) {
|
||
return !!(/** @type {HTMLElement} */ (event.target).closest('.pswp__container'));
|
||
}
|
||
|
||
/**
|
||
* Tap, double-tap handler.
|
||
*/
|
||
class TapHandler {
|
||
/**
|
||
* @param {Gestures} gestures
|
||
*/
|
||
constructor(gestures) {
|
||
this.gestures = gestures;
|
||
}
|
||
|
||
/**
|
||
* @param {Point} point
|
||
* @param {PointerEvent} originalEvent
|
||
*/
|
||
click(point, originalEvent) {
|
||
const targetClassList = /** @type {HTMLElement} */ (originalEvent.target).classList;
|
||
const isImageClick = targetClassList.contains('pswp__img');
|
||
const isBackgroundClick = targetClassList.contains('pswp__item')
|
||
|| targetClassList.contains('pswp__zoom-wrap');
|
||
|
||
if (isImageClick) {
|
||
this._doClickOrTapAction('imageClick', point, originalEvent);
|
||
} else if (isBackgroundClick) {
|
||
this._doClickOrTapAction('bgClick', point, originalEvent);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {Point} point
|
||
* @param {PointerEvent} originalEvent
|
||
*/
|
||
tap(point, originalEvent) {
|
||
if (didTapOnMainContent(originalEvent)) {
|
||
this._doClickOrTapAction('tap', point, originalEvent);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {Point} point
|
||
* @param {PointerEvent} originalEvent
|
||
*/
|
||
doubleTap(point, originalEvent) {
|
||
if (didTapOnMainContent(originalEvent)) {
|
||
this._doClickOrTapAction('doubleTap', point, originalEvent);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {Actions} actionName
|
||
* @param {Point} point
|
||
* @param {PointerEvent} originalEvent
|
||
*/
|
||
_doClickOrTapAction(actionName, point, originalEvent) {
|
||
const { pswp } = this.gestures;
|
||
const { currSlide } = pswp;
|
||
const actionFullName = /** @type {AddPostfix<Actions, 'Action'>} */ (actionName + 'Action');
|
||
const optionValue = pswp.options[actionFullName];
|
||
|
||
if (pswp.dispatch(actionFullName, { point, originalEvent }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
if (typeof optionValue === 'function') {
|
||
optionValue.call(pswp, point, originalEvent);
|
||
return;
|
||
}
|
||
|
||
switch (optionValue) {
|
||
case 'close':
|
||
case 'next':
|
||
pswp[optionValue]();
|
||
break;
|
||
case 'zoom':
|
||
currSlide.toggleZoom(point);
|
||
break;
|
||
case 'zoom-or-close':
|
||
// by default click zooms current image,
|
||
// if it can not be zoomed - gallery will be closed
|
||
if (currSlide.isZoomable()
|
||
&& currSlide.zoomLevels.secondary !== currSlide.zoomLevels.initial) {
|
||
currSlide.toggleZoom(point);
|
||
} else if (pswp.options.clickToCloseNonZoomable) {
|
||
pswp.close();
|
||
}
|
||
break;
|
||
case 'toggle-controls':
|
||
this.gestures.pswp.element.classList.toggle('pswp--ui-visible');
|
||
// if (_controlsVisible) {
|
||
// _ui.hideControls();
|
||
// } else {
|
||
// _ui.showControls();
|
||
// }
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/** @typedef {import('../photoswipe.js').default} PhotoSwipe */
|
||
/** @typedef {import('../photoswipe.js').Point} Point */
|
||
|
||
// How far should user should drag
|
||
// until we can determine that the gesture is swipe and its direction
|
||
const AXIS_SWIPE_HYSTERISIS = 10;
|
||
//const PAN_END_FRICTION = 0.35;
|
||
|
||
const DOUBLE_TAP_DELAY = 300; // ms
|
||
const MIN_TAP_DISTANCE = 25; // px
|
||
|
||
/**
|
||
* Gestures class bind touch, pointer or mouse events
|
||
* and emits drag to drag-handler and zoom events zoom-handler.
|
||
*
|
||
* Drag and zoom events are emited in requestAnimationFrame,
|
||
* and only when one of pointers was actually changed.
|
||
*/
|
||
class Gestures {
|
||
/**
|
||
* @param {PhotoSwipe} pswp
|
||
*/
|
||
constructor(pswp) {
|
||
this.pswp = pswp;
|
||
|
||
/** @type {'x' | 'y'} */
|
||
this.dragAxis = undefined;
|
||
|
||
// point objects are defined once and reused
|
||
// PhotoSwipe keeps track only of two pointers, others are ignored
|
||
/** @type {Point} */
|
||
this.p1 = {}; // the first pressed pointer
|
||
/** @type {Point} */
|
||
this.p2 = {}; // the second pressed pointer
|
||
/** @type {Point} */
|
||
this.prevP1 = {};
|
||
/** @type {Point} */
|
||
this.prevP2 = {};
|
||
/** @type {Point} */
|
||
this.startP1 = {};
|
||
/** @type {Point} */
|
||
this.startP2 = {};
|
||
/** @type {Point} */
|
||
this.velocity = {};
|
||
|
||
/** @type {Point} */
|
||
this._lastStartP1 = {};
|
||
/** @type {Point} */
|
||
this._intervalP1 = {};
|
||
this._numActivePoints = 0;
|
||
/** @type {Point[]} */
|
||
this._ongoingPointers = [];
|
||
|
||
this._touchEventEnabled = 'ontouchstart' in window;
|
||
this._pointerEventEnabled = !!(window.PointerEvent);
|
||
this.supportsTouch = this._touchEventEnabled
|
||
|| (this._pointerEventEnabled && navigator.maxTouchPoints > 1);
|
||
|
||
if (!this.supportsTouch) {
|
||
// disable pan to next slide for non-touch devices
|
||
pswp.options.allowPanToNext = false;
|
||
}
|
||
|
||
this.drag = new DragHandler(this);
|
||
this.zoomLevels = new ZoomHandler(this);
|
||
this.tapHandler = new TapHandler(this);
|
||
|
||
pswp.on('bindEvents', () => {
|
||
pswp.events.add(pswp.scrollWrap, 'click', e => this._onClick(e));
|
||
|
||
if (this._pointerEventEnabled) {
|
||
this._bindEvents('pointer', 'down', 'up', 'cancel');
|
||
} else if (this._touchEventEnabled) {
|
||
this._bindEvents('touch', 'start', 'end', 'cancel');
|
||
|
||
// In previous versions we also bound mouse event here,
|
||
// in case device supports both touch and mouse events,
|
||
// but newer versions of browsers now support PointerEvent.
|
||
|
||
// on iOS10 if you bind touchmove/end after touchstart,
|
||
// and you don't preventDefault touchstart (which PhotoSwipe does),
|
||
// preventDefault will have no effect on touchmove and touchend.
|
||
// Unless you bind it previously.
|
||
pswp.scrollWrap.ontouchmove = () => {}; // eslint-disable-line
|
||
pswp.scrollWrap.ontouchend = () => {}; // eslint-disable-line
|
||
} else {
|
||
this._bindEvents('mouse', 'down', 'up');
|
||
}
|
||
});
|
||
}
|
||
|
||
/**
|
||
*
|
||
* @param {'mouse' | 'touch' | 'pointer'} pref
|
||
* @param {'down' | 'start'} down
|
||
* @param {'up' | 'end'} up
|
||
* @param {'cancel'} [cancel]
|
||
*/
|
||
_bindEvents(pref, down, up, cancel) {
|
||
const { pswp } = this;
|
||
const { events } = pswp;
|
||
|
||
const cancelEvent = cancel ? pref + cancel : '';
|
||
|
||
events.add(pswp.scrollWrap, pref + down, this.onPointerDown.bind(this));
|
||
events.add(window, pref + 'move', this.onPointerMove.bind(this));
|
||
events.add(window, pref + up, this.onPointerUp.bind(this));
|
||
if (cancelEvent) {
|
||
events.add(pswp.scrollWrap, cancelEvent, this.onPointerUp.bind(this));
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {PointerEvent} e
|
||
*/
|
||
onPointerDown(e) {
|
||
// We do not call preventDefault for touch events
|
||
// to allow browser to show native dialog on longpress
|
||
// (the one that allows to save image or open it in new tab).
|
||
//
|
||
// Desktop Safari allows to drag images when preventDefault isn't called on mousedown,
|
||
// even though preventDefault IS called on mousemove. That's why we preventDefault mousedown.
|
||
let isMousePointer;
|
||
if (e.type === 'mousedown' || e.pointerType === 'mouse') {
|
||
isMousePointer = true;
|
||
}
|
||
|
||
// Allow dragging only via left mouse button.
|
||
// http://www.quirksmode.org/js/events_properties.html
|
||
// https://developer.mozilla.org/en-US/docs/Web/API/event.button
|
||
if (isMousePointer && e.button > 0) {
|
||
return;
|
||
}
|
||
|
||
const { pswp } = this;
|
||
|
||
// if PhotoSwipe is opening or closing
|
||
if (!pswp.opener.isOpen) {
|
||
e.preventDefault();
|
||
return;
|
||
}
|
||
|
||
if (pswp.dispatch('pointerDown', { originalEvent: e }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
if (isMousePointer) {
|
||
pswp.mouseDetected();
|
||
|
||
// preventDefault mouse event to prevent
|
||
// browser image drag feature
|
||
this._preventPointerEventBehaviour(e);
|
||
}
|
||
|
||
pswp.animations.stopAll();
|
||
|
||
this._updatePoints(e, 'down');
|
||
|
||
this.pointerDown = true;
|
||
|
||
if (this._numActivePoints === 1) {
|
||
this.dragAxis = null;
|
||
// we need to store initial point to determine the main axis,
|
||
// drag is activated only after the axis is determined
|
||
equalizePoints(this.startP1, this.p1);
|
||
}
|
||
|
||
if (this._numActivePoints > 1) {
|
||
// Tap or double tap should not trigger if more than one pointer
|
||
this._clearTapTimer();
|
||
this.isMultitouch = true;
|
||
} else {
|
||
this.isMultitouch = false;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {PointerEvent} e
|
||
*/
|
||
onPointerMove(e) {
|
||
e.preventDefault(); // always preventDefault move event
|
||
|
||
if (!this._numActivePoints) {
|
||
return;
|
||
}
|
||
|
||
this._updatePoints(e, 'move');
|
||
|
||
if (this.pswp.dispatch('pointerMove', { originalEvent: e }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
if (this._numActivePoints === 1 && !this.isDragging) {
|
||
if (!this.dragAxis) {
|
||
this._calculateDragDirection();
|
||
}
|
||
|
||
// Drag axis was detected, emit drag.start
|
||
if (this.dragAxis && !this.isDragging) {
|
||
if (this.isZooming) {
|
||
this.isZooming = false;
|
||
this.zoomLevels.end();
|
||
}
|
||
|
||
this.isDragging = true;
|
||
this._clearTapTimer(); // Tap can not trigger after drag
|
||
|
||
// Adjust starting point
|
||
this._updateStartPoints();
|
||
this._intervalTime = Date.now();
|
||
//this._startTime = this._intervalTime;
|
||
this._velocityCalculated = false;
|
||
equalizePoints(this._intervalP1, this.p1);
|
||
this.velocity.x = 0;
|
||
this.velocity.y = 0;
|
||
this.drag.start();
|
||
|
||
this._rafStopLoop();
|
||
this._rafRenderLoop();
|
||
}
|
||
} else if (this._numActivePoints > 1 && !this.isZooming) {
|
||
this._finishDrag();
|
||
|
||
this.isZooming = true;
|
||
|
||
// Adjust starting points
|
||
this._updateStartPoints();
|
||
|
||
this.zoomLevels.start();
|
||
|
||
this._rafStopLoop();
|
||
this._rafRenderLoop();
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @private
|
||
*/
|
||
_finishDrag() {
|
||
if (this.isDragging) {
|
||
this.isDragging = false;
|
||
|
||
// Try to calculate velocity,
|
||
// if it wasn't calculated yet in drag.change
|
||
if (!this._velocityCalculated) {
|
||
this._updateVelocity(true);
|
||
}
|
||
|
||
this.drag.end();
|
||
this.dragAxis = null;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {PointerEvent} e
|
||
*/
|
||
onPointerUp(e) {
|
||
if (!this._numActivePoints) {
|
||
return;
|
||
}
|
||
|
||
this._updatePoints(e, 'up');
|
||
|
||
if (this.pswp.dispatch('pointerUp', { originalEvent: e }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
if (this._numActivePoints === 0) {
|
||
this.pointerDown = false;
|
||
this._rafStopLoop();
|
||
|
||
if (this.isDragging) {
|
||
this._finishDrag();
|
||
} else if (!this.isZooming && !this.isMultitouch) {
|
||
//this.zoomLevels.correctZoomPan();
|
||
this._finishTap(e);
|
||
}
|
||
}
|
||
|
||
if (this._numActivePoints < 2 && this.isZooming) {
|
||
this.isZooming = false;
|
||
this.zoomLevels.end();
|
||
|
||
if (this._numActivePoints === 1) {
|
||
// Since we have 1 point left, we need to reinitiate drag
|
||
this.dragAxis = null;
|
||
this._updateStartPoints();
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @private
|
||
*/
|
||
_rafRenderLoop() {
|
||
if (this.isDragging || this.isZooming) {
|
||
this._updateVelocity();
|
||
|
||
if (this.isDragging) {
|
||
// make sure that pointer moved since the last update
|
||
if (!pointsEqual(this.p1, this.prevP1)) {
|
||
this.drag.change();
|
||
}
|
||
} else /* if (this.isZooming) */ {
|
||
if (!pointsEqual(this.p1, this.prevP1)
|
||
|| !pointsEqual(this.p2, this.prevP2)) {
|
||
this.zoomLevels.change();
|
||
}
|
||
}
|
||
|
||
this._updatePrevPoints();
|
||
this.raf = requestAnimationFrame(this._rafRenderLoop.bind(this));
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Update velocity at 50ms interval
|
||
*
|
||
* @param {boolean=} force
|
||
*/
|
||
_updateVelocity(force) {
|
||
const time = Date.now();
|
||
const duration = time - this._intervalTime;
|
||
|
||
if (duration < 50 && !force) {
|
||
return;
|
||
}
|
||
|
||
|
||
this.velocity.x = this._getVelocity('x', duration);
|
||
this.velocity.y = this._getVelocity('y', duration);
|
||
|
||
this._intervalTime = time;
|
||
equalizePoints(this._intervalP1, this.p1);
|
||
this._velocityCalculated = true;
|
||
}
|
||
|
||
/**
|
||
* @private
|
||
* @param {PointerEvent} e
|
||
*/
|
||
_finishTap(e) {
|
||
const { mainScroll } = this.pswp;
|
||
|
||
// Do not trigger tap events if main scroll is shifted
|
||
if (mainScroll.isShifted()) {
|
||
// restore main scroll position
|
||
// (usually happens if stopped in the middle of animation)
|
||
mainScroll.moveIndexBy(0, true);
|
||
return;
|
||
}
|
||
|
||
// Do not trigger tap for touchcancel or pointercancel
|
||
if (e.type.indexOf('cancel') > 0) {
|
||
return;
|
||
}
|
||
|
||
// Trigger click instead of tap for mouse events
|
||
if (e.type === 'mouseup' || e.pointerType === 'mouse') {
|
||
this.tapHandler.click(this.startP1, e);
|
||
return;
|
||
}
|
||
|
||
// Disable delay if there is no doubleTapAction
|
||
const tapDelay = this.pswp.options.doubleTapAction ? DOUBLE_TAP_DELAY : 0;
|
||
|
||
// If tapTimer is defined - we tapped recently,
|
||
// check if the current tap is close to the previous one,
|
||
// if yes - trigger double tap
|
||
if (this._tapTimer) {
|
||
this._clearTapTimer();
|
||
// Check if two taps were more or less on the same place
|
||
if (getDistanceBetween(this._lastStartP1, this.startP1) < MIN_TAP_DISTANCE) {
|
||
this.tapHandler.doubleTap(this.startP1, e);
|
||
}
|
||
} else {
|
||
equalizePoints(this._lastStartP1, this.startP1);
|
||
this._tapTimer = setTimeout(() => {
|
||
this.tapHandler.tap(this.startP1, e);
|
||
this._clearTapTimer();
|
||
}, tapDelay);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @private
|
||
*/
|
||
_clearTapTimer() {
|
||
if (this._tapTimer) {
|
||
clearTimeout(this._tapTimer);
|
||
this._tapTimer = null;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Get velocity for axis
|
||
*
|
||
* @private
|
||
* @param {'x' | 'y'} axis
|
||
* @param {number} duration
|
||
*/
|
||
_getVelocity(axis, duration) {
|
||
// displacement is like distance, but can be negative.
|
||
const displacement = this.p1[axis] - this._intervalP1[axis];
|
||
|
||
if (Math.abs(displacement) > 1 && duration > 5) {
|
||
return displacement / duration;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/**
|
||
* @private
|
||
*/
|
||
_rafStopLoop() {
|
||
if (this.raf) {
|
||
cancelAnimationFrame(this.raf);
|
||
this.raf = null;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @private
|
||
* @param {PointerEvent} e
|
||
*/
|
||
_preventPointerEventBehaviour(e) {
|
||
// TODO find a way to disable e.preventDefault on some elements
|
||
// via event or some class or something
|
||
e.preventDefault();
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* Parses and normalizes points from the touch, mouse or pointer event.
|
||
* Updates p1 and p2.
|
||
*
|
||
* @private
|
||
* @param {PointerEvent | TouchEvent} e
|
||
* @param {'up' | 'down' | 'move'} pointerType Normalized pointer type
|
||
*/
|
||
_updatePoints(e, pointerType) {
|
||
if (this._pointerEventEnabled) {
|
||
const pointerEvent = /** @type {PointerEvent} */ (e);
|
||
// Try to find the current pointer in ongoing pointers by its ID
|
||
const pointerIndex = this._ongoingPointers.findIndex((ongoingPoiner) => {
|
||
return ongoingPoiner.id === pointerEvent.pointerId;
|
||
});
|
||
|
||
if (pointerType === 'up' && pointerIndex > -1) {
|
||
// release the pointer - remove it from ongoing
|
||
this._ongoingPointers.splice(pointerIndex, 1);
|
||
} else if (pointerType === 'down' && pointerIndex === -1) {
|
||
// add new pointer
|
||
this._ongoingPointers.push(this._convertEventPosToPoint(pointerEvent, {}));
|
||
} else if (pointerIndex > -1) {
|
||
// update existing pointer
|
||
this._convertEventPosToPoint(pointerEvent, this._ongoingPointers[pointerIndex]);
|
||
}
|
||
|
||
this._numActivePoints = this._ongoingPointers.length;
|
||
|
||
// update points that PhotoSwipe uses
|
||
// to calculate position and scale
|
||
if (this._numActivePoints > 0) {
|
||
equalizePoints(this.p1, this._ongoingPointers[0]);
|
||
}
|
||
|
||
if (this._numActivePoints > 1) {
|
||
equalizePoints(this.p2, this._ongoingPointers[1]);
|
||
}
|
||
} else {
|
||
const touchEvent = /** @type {TouchEvent} */ (e);
|
||
|
||
this._numActivePoints = 0;
|
||
if (touchEvent.type.indexOf('touch') > -1) {
|
||
// Touch Event
|
||
// https://developer.mozilla.org/en-US/docs/Web/API/TouchEvent
|
||
if (touchEvent.touches && touchEvent.touches.length > 0) {
|
||
this._convertEventPosToPoint(touchEvent.touches[0], this.p1);
|
||
this._numActivePoints++;
|
||
if (touchEvent.touches.length > 1) {
|
||
this._convertEventPosToPoint(touchEvent.touches[1], this.p2);
|
||
this._numActivePoints++;
|
||
}
|
||
}
|
||
} else {
|
||
// Mouse Event
|
||
this._convertEventPosToPoint(/** @type {PointerEvent} */ (e), this.p1);
|
||
if (pointerType === 'up') {
|
||
// clear all points on mouseup
|
||
this._numActivePoints = 0;
|
||
} else {
|
||
this._numActivePoints++;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// update points that were used during previous rAF tick
|
||
_updatePrevPoints() {
|
||
equalizePoints(this.prevP1, this.p1);
|
||
equalizePoints(this.prevP2, this.p2);
|
||
}
|
||
|
||
// update points at the start of gesture
|
||
_updateStartPoints() {
|
||
equalizePoints(this.startP1, this.p1);
|
||
equalizePoints(this.startP2, this.p2);
|
||
this._updatePrevPoints();
|
||
}
|
||
|
||
_calculateDragDirection() {
|
||
if (this.pswp.mainScroll.isShifted()) {
|
||
// if main scroll position is shifted – direction is always horizontal
|
||
this.dragAxis = 'x';
|
||
} else {
|
||
// calculate delta of the last touchmove tick
|
||
const diff = Math.abs(this.p1.x - this.startP1.x) - Math.abs(this.p1.y - this.startP1.y);
|
||
|
||
if (diff !== 0) {
|
||
// check if pointer was shifted horizontally or vertically
|
||
const axisToCheck = diff > 0 ? 'x' : 'y';
|
||
|
||
if (Math.abs(this.p1[axisToCheck] - this.startP1[axisToCheck]) >= AXIS_SWIPE_HYSTERISIS) {
|
||
this.dragAxis = axisToCheck;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Converts touch, pointer or mouse event
|
||
* to PhotoSwipe point.
|
||
*
|
||
* @private
|
||
* @param {Touch | PointerEvent} e
|
||
* @param {Point} p
|
||
*/
|
||
_convertEventPosToPoint(e, p) {
|
||
p.x = e.pageX - this.pswp.offset.x;
|
||
p.y = e.pageY - this.pswp.offset.y;
|
||
|
||
if ('pointerId' in e) {
|
||
p.id = e.pointerId;
|
||
} else if (e.identifier !== undefined) {
|
||
p.id = e.identifier;
|
||
}
|
||
|
||
return p;
|
||
}
|
||
|
||
/**
|
||
* @private
|
||
* @param {PointerEvent} e
|
||
*/
|
||
_onClick(e) {
|
||
// Do not allow click event to pass through after drag
|
||
if (this.pswp.mainScroll.isShifted()) {
|
||
e.preventDefault();
|
||
e.stopPropagation();
|
||
}
|
||
}
|
||
}
|
||
|
||
/** @typedef {import('./photoswipe.js').default} PhotoSwipe */
|
||
/** @typedef {import('./slide/slide.js').default} Slide */
|
||
|
||
/** @typedef {{ el: HTMLDivElement; slide?: Slide }} ItemHolder */
|
||
|
||
const MAIN_SCROLL_END_FRICTION = 0.35;
|
||
|
||
|
||
// const MIN_SWIPE_TRANSITION_DURATION = 250;
|
||
// const MAX_SWIPE_TRABSITION_DURATION = 500;
|
||
// const DEFAULT_SWIPE_TRANSITION_DURATION = 333;
|
||
|
||
/**
|
||
* Handles movement of the main scrolling container
|
||
* (for example, it repositions when user swipes left or right).
|
||
*
|
||
* Also stores its state.
|
||
*/
|
||
class MainScroll {
|
||
/**
|
||
* @param {PhotoSwipe} pswp
|
||
*/
|
||
constructor(pswp) {
|
||
this.pswp = pswp;
|
||
this.x = 0;
|
||
|
||
/** @type {number} */
|
||
this.slideWidth = undefined;
|
||
|
||
/** @type {ItemHolder[]} */
|
||
this.itemHolders = undefined;
|
||
|
||
this.resetPosition();
|
||
}
|
||
|
||
/**
|
||
* Position the scroller and slide containers
|
||
* according to viewport size.
|
||
*
|
||
* @param {boolean=} resizeSlides Whether slides content should resized
|
||
*/
|
||
resize(resizeSlides) {
|
||
const { pswp } = this;
|
||
const newSlideWidth = Math.round(
|
||
pswp.viewportSize.x + pswp.viewportSize.x * pswp.options.spacing
|
||
);
|
||
// Mobile browsers might trigger a resize event during a gesture.
|
||
// (due to toolbar appearing or hiding).
|
||
// Avoid re-adjusting main scroll position if width wasn't changed
|
||
const slideWidthChanged = (newSlideWidth !== this.slideWidth);
|
||
|
||
if (slideWidthChanged) {
|
||
this.slideWidth = newSlideWidth;
|
||
this.moveTo(this.getCurrSlideX());
|
||
}
|
||
|
||
this.itemHolders.forEach((itemHolder, index) => {
|
||
if (slideWidthChanged) {
|
||
setTransform(itemHolder.el, (index + this._containerShiftIndex)
|
||
* this.slideWidth);
|
||
}
|
||
|
||
if (resizeSlides && itemHolder.slide) {
|
||
itemHolder.slide.resize();
|
||
}
|
||
});
|
||
}
|
||
|
||
/**
|
||
* Reset X position of the main scroller to zero
|
||
*/
|
||
resetPosition() {
|
||
// Position on the main scroller (offset)
|
||
// it is independent from slide index
|
||
this._currPositionIndex = 0;
|
||
this._prevPositionIndex = 0;
|
||
|
||
// This will force recalculation of size on next resize()
|
||
this.slideWidth = 0;
|
||
|
||
// _containerShiftIndex*viewportSize will give you amount of transform of the current slide
|
||
this._containerShiftIndex = -1;
|
||
}
|
||
|
||
/**
|
||
* Create and append array of three items
|
||
* that hold data about slides in DOM
|
||
*/
|
||
appendHolders() {
|
||
this.itemHolders = [];
|
||
|
||
// append our three slide holders -
|
||
// previous, current, and next
|
||
for (let i = 0; i < 3; i++) {
|
||
const el = createElement('pswp__item', false, this.pswp.container);
|
||
|
||
// hide nearby item holders until initial zoom animation finishes (to avoid extra Paints)
|
||
el.style.display = (i === 1) ? 'block' : 'none';
|
||
|
||
this.itemHolders.push({
|
||
el,
|
||
//index: -1
|
||
});
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Whether the main scroll can be horizontally swiped to the next or previous slide.
|
||
*/
|
||
canBeSwiped() {
|
||
return this.pswp.getNumItems() > 1;
|
||
}
|
||
|
||
/**
|
||
* Move main scroll by X amount of slides.
|
||
* For example:
|
||
* `-1` will move to the previous slide,
|
||
* `0` will reset the scroll position of the current slide,
|
||
* `3` will move three slides forward
|
||
*
|
||
* If loop option is enabled - index will be automatically looped too,
|
||
* (for example `-1` will move to the last slide of the gallery).
|
||
*
|
||
* @param {number} diff
|
||
* @param {boolean=} animate
|
||
* @param {number=} velocityX
|
||
* @returns {boolean} whether index was changed or not
|
||
*/
|
||
moveIndexBy(diff, animate, velocityX) {
|
||
const { pswp } = this;
|
||
let newIndex = pswp.potentialIndex + diff;
|
||
const numSlides = pswp.getNumItems();
|
||
|
||
if (pswp.canLoop()) {
|
||
newIndex = pswp.getLoopedIndex(newIndex);
|
||
const distance = (diff + numSlides) % numSlides;
|
||
if (distance <= numSlides / 2) {
|
||
// go forward
|
||
diff = distance;
|
||
} else {
|
||
// go backwards
|
||
diff = distance - numSlides;
|
||
}
|
||
} else {
|
||
if (newIndex < 0) {
|
||
newIndex = 0;
|
||
} else if (newIndex >= numSlides) {
|
||
newIndex = numSlides - 1;
|
||
}
|
||
diff = newIndex - pswp.potentialIndex;
|
||
}
|
||
|
||
pswp.potentialIndex = newIndex;
|
||
this._currPositionIndex -= diff;
|
||
|
||
pswp.animations.stopMainScroll();
|
||
|
||
const destinationX = this.getCurrSlideX();
|
||
if (!animate) {
|
||
this.moveTo(destinationX);
|
||
this.updateCurrItem();
|
||
} else {
|
||
pswp.animations.startSpring({
|
||
isMainScroll: true,
|
||
start: this.x,
|
||
end: destinationX,
|
||
velocity: velocityX || 0,
|
||
naturalFrequency: 30,
|
||
dampingRatio: 1, //0.7,
|
||
onUpdate: (x) => {
|
||
this.moveTo(x);
|
||
},
|
||
onComplete: () => {
|
||
this.updateCurrItem();
|
||
pswp.appendHeavy();
|
||
}
|
||
});
|
||
|
||
let currDiff = pswp.potentialIndex - pswp.currIndex;
|
||
if (pswp.canLoop()) {
|
||
const currDistance = (currDiff + numSlides) % numSlides;
|
||
if (currDistance <= numSlides / 2) {
|
||
// go forward
|
||
currDiff = currDistance;
|
||
} else {
|
||
// go backwards
|
||
currDiff = currDistance - numSlides;
|
||
}
|
||
}
|
||
|
||
// Force-append new slides during transition
|
||
// if difference between slides is more than 1
|
||
if (Math.abs(currDiff) > 1) {
|
||
this.updateCurrItem();
|
||
}
|
||
}
|
||
|
||
if (diff) {
|
||
return true;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* X position of the main scroll for the current slide
|
||
* (ignores position during dragging)
|
||
*/
|
||
getCurrSlideX() {
|
||
return this.slideWidth * this._currPositionIndex;
|
||
}
|
||
|
||
/**
|
||
* Whether scroll position is shifted.
|
||
* For example, it will return true if the scroll is being dragged or animated.
|
||
*/
|
||
isShifted() {
|
||
return this.x !== this.getCurrSlideX();
|
||
}
|
||
|
||
/**
|
||
* Update slides X positions and set their content
|
||
*/
|
||
updateCurrItem() {
|
||
const { pswp } = this;
|
||
const positionDifference = this._prevPositionIndex - this._currPositionIndex;
|
||
|
||
if (!positionDifference) {
|
||
return;
|
||
}
|
||
|
||
this._prevPositionIndex = this._currPositionIndex;
|
||
|
||
pswp.currIndex = pswp.potentialIndex;
|
||
|
||
let diffAbs = Math.abs(positionDifference);
|
||
let tempHolder;
|
||
|
||
if (diffAbs >= 3) {
|
||
this._containerShiftIndex += positionDifference + (positionDifference > 0 ? -3 : 3);
|
||
diffAbs = 3;
|
||
}
|
||
|
||
for (let i = 0; i < diffAbs; i++) {
|
||
if (positionDifference > 0) {
|
||
tempHolder = this.itemHolders.shift();
|
||
this.itemHolders[2] = tempHolder; // move first to last
|
||
|
||
this._containerShiftIndex++;
|
||
|
||
setTransform(tempHolder.el, (this._containerShiftIndex + 2) * this.slideWidth);
|
||
|
||
pswp.setContent(tempHolder, (pswp.currIndex - diffAbs) + i + 2);
|
||
} else {
|
||
tempHolder = this.itemHolders.pop();
|
||
this.itemHolders.unshift(tempHolder); // move last to first
|
||
|
||
this._containerShiftIndex--;
|
||
|
||
setTransform(tempHolder.el, this._containerShiftIndex * this.slideWidth);
|
||
|
||
pswp.setContent(tempHolder, (pswp.currIndex + diffAbs) - i - 2);
|
||
}
|
||
}
|
||
|
||
// Reset transfrom every 50ish navigations in one direction.
|
||
//
|
||
// Otherwise transform will keep growing indefinitely,
|
||
// which might cause issues as browsers have a maximum transform limit.
|
||
// I wasn't able to reach it, but just to be safe.
|
||
// This should not cause noticable lag.
|
||
if (Math.abs(this._containerShiftIndex) > 50 && !this.isShifted()) {
|
||
this.resetPosition();
|
||
this.resize();
|
||
}
|
||
|
||
// Pan transition might be running (and consntantly updating pan position)
|
||
pswp.animations.stopAllPan();
|
||
|
||
this.itemHolders.forEach((itemHolder, i) => {
|
||
if (itemHolder.slide) {
|
||
// Slide in the 2nd holder is always active
|
||
itemHolder.slide.setIsActive(i === 1);
|
||
}
|
||
});
|
||
|
||
pswp.currSlide = this.itemHolders[1].slide;
|
||
pswp.contentLoader.updateLazy(positionDifference);
|
||
|
||
pswp.currSlide.applyCurrentZoomPan();
|
||
pswp.dispatch('change');
|
||
}
|
||
|
||
/**
|
||
* Move the X position of the main scroll container
|
||
*
|
||
* @param {number} x
|
||
* @param {boolean=} dragging
|
||
*/
|
||
moveTo(x, dragging) {
|
||
/** @type {number} */
|
||
let newSlideIndexOffset;
|
||
/** @type {number} */
|
||
let delta;
|
||
|
||
if (!this.pswp.canLoop() && dragging) {
|
||
// Apply friction
|
||
newSlideIndexOffset = ((this.slideWidth * this._currPositionIndex) - x) / this.slideWidth;
|
||
newSlideIndexOffset += this.pswp.currIndex;
|
||
delta = Math.round(x - this.x);
|
||
|
||
if ((newSlideIndexOffset < 0 && delta > 0)
|
||
|| (newSlideIndexOffset >= this.pswp.getNumItems() - 1 && delta < 0)) {
|
||
x = this.x + (delta * MAIN_SCROLL_END_FRICTION);
|
||
}
|
||
}
|
||
|
||
this.x = x;
|
||
setTransform(this.pswp.container, x);
|
||
|
||
this.pswp.dispatch('moveMainScroll', { x, dragging });
|
||
}
|
||
}
|
||
|
||
/** @typedef {import('./photoswipe.js').default} PhotoSwipe */
|
||
|
||
/**
|
||
* @template T
|
||
* @typedef {import('./types.js').Methods<T>} Methods<T>
|
||
*/
|
||
|
||
/**
|
||
* - Manages keyboard shortcuts.
|
||
* - Heps trap focus within photoswipe.
|
||
*/
|
||
class Keyboard {
|
||
/**
|
||
* @param {PhotoSwipe} pswp
|
||
*/
|
||
constructor(pswp) {
|
||
this.pswp = pswp;
|
||
|
||
pswp.on('bindEvents', () => {
|
||
// Dialog was likely opened by keyboard if initial point is not defined
|
||
if (!pswp.options.initialPointerPos) {
|
||
// focus causes layout,
|
||
// which causes lag during the animation,
|
||
// that's why we delay it until the opener transition ends
|
||
this._focusRoot();
|
||
}
|
||
|
||
pswp.events.add(document, 'focusin', this._onFocusIn.bind(this));
|
||
pswp.events.add(document, 'keydown', this._onKeyDown.bind(this));
|
||
});
|
||
|
||
const lastActiveElement = /** @type {HTMLElement} */ (document.activeElement);
|
||
pswp.on('destroy', () => {
|
||
if (pswp.options.returnFocus
|
||
&& lastActiveElement
|
||
&& this._wasFocused) {
|
||
lastActiveElement.focus();
|
||
}
|
||
});
|
||
}
|
||
|
||
_focusRoot() {
|
||
if (!this._wasFocused) {
|
||
this.pswp.element.focus();
|
||
this._wasFocused = true;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {KeyboardEvent} e
|
||
*/
|
||
_onKeyDown(e) {
|
||
const { pswp } = this;
|
||
|
||
if (pswp.dispatch('keydown', { originalEvent: e }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
if (specialKeyUsed(e)) {
|
||
// don't do anything if special key pressed
|
||
// to prevent from overriding default browser actions
|
||
// for example, in Chrome on Mac cmd+arrow-left returns to previous page
|
||
return;
|
||
}
|
||
|
||
/** @type {Methods<PhotoSwipe>} */
|
||
let keydownAction;
|
||
/** @type {'x' | 'y'} */
|
||
let axis;
|
||
let isForward;
|
||
|
||
switch (e.keyCode) {
|
||
case 27: // esc
|
||
if (pswp.options.escKey) {
|
||
keydownAction = 'close';
|
||
}
|
||
break;
|
||
case 90: // z key
|
||
keydownAction = 'toggleZoom';
|
||
break;
|
||
case 37: // left
|
||
axis = 'x';
|
||
break;
|
||
case 38: // top
|
||
axis = 'y';
|
||
break;
|
||
case 39: // right
|
||
axis = 'x';
|
||
isForward = true;
|
||
break;
|
||
case 40: // bottom
|
||
isForward = true;
|
||
axis = 'y';
|
||
break;
|
||
case 9: // tab
|
||
this._focusRoot();
|
||
break;
|
||
}
|
||
|
||
// if left/right/top/bottom key
|
||
if (axis) {
|
||
// prevent page scroll
|
||
e.preventDefault();
|
||
|
||
const { currSlide } = pswp;
|
||
|
||
if (pswp.options.arrowKeys
|
||
&& axis === 'x'
|
||
&& pswp.getNumItems() > 1) {
|
||
keydownAction = isForward ? 'next' : 'prev';
|
||
} else if (currSlide && currSlide.currZoomLevel > currSlide.zoomLevels.fit) {
|
||
// up/down arrow keys pan the image vertically
|
||
// left/right arrow keys pan horizontally.
|
||
// Unless there is only one image,
|
||
// or arrowKeys option is disabled
|
||
currSlide.pan[axis] += isForward ? -80 : 80;
|
||
currSlide.panTo(currSlide.pan.x, currSlide.pan.y);
|
||
}
|
||
}
|
||
|
||
if (keydownAction) {
|
||
e.preventDefault();
|
||
pswp[keydownAction]();
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Trap focus inside photoswipe
|
||
*
|
||
* @param {FocusEvent} e
|
||
*/
|
||
_onFocusIn(e) {
|
||
const { template } = this.pswp;
|
||
if (document !== e.target
|
||
&& template !== e.target
|
||
&& !template.contains(/** @type {Node} */ (e.target))) {
|
||
// focus root element
|
||
template.focus();
|
||
}
|
||
}
|
||
}
|
||
|
||
const DEFAULT_EASING = 'cubic-bezier(.4,0,.22,1)';
|
||
|
||
/** @typedef {import('./animations.js').AnimationProps} AnimationProps */
|
||
|
||
/**
|
||
* Runs CSS transition.
|
||
*/
|
||
class CSSAnimation {
|
||
/**
|
||
* onComplete can be unpredictable, be careful about current state
|
||
*
|
||
* @param {AnimationProps} props
|
||
*/
|
||
constructor(props) {
|
||
this.props = props;
|
||
const {
|
||
target,
|
||
onComplete,
|
||
transform,
|
||
onFinish
|
||
// opacity
|
||
} = props;
|
||
|
||
let {
|
||
duration,
|
||
easing,
|
||
} = props;
|
||
|
||
/** @type {() => void} */
|
||
this.onFinish = onFinish;
|
||
|
||
// support only transform and opacity
|
||
const prop = transform ? 'transform' : 'opacity';
|
||
const propValue = props[prop];
|
||
|
||
/** @private */
|
||
this._target = target;
|
||
/** @private */
|
||
this._onComplete = onComplete;
|
||
|
||
duration = duration || 333;
|
||
easing = easing || DEFAULT_EASING;
|
||
|
||
/** @private */
|
||
this._onTransitionEnd = this._onTransitionEnd.bind(this);
|
||
|
||
// Using timeout hack to make sure that animation
|
||
// starts even if the animated property was changed recently,
|
||
// otherwise transitionend might not fire or transiton won't start.
|
||
// https://drafts.csswg.org/css-transitions/#starting
|
||
//
|
||
// ¯\_(ツ)_/¯
|
||
/** @private */
|
||
this._helperTimeout = setTimeout(() => {
|
||
setTransitionStyle(target, prop, duration, easing);
|
||
this._helperTimeout = setTimeout(() => {
|
||
target.addEventListener('transitionend', this._onTransitionEnd, false);
|
||
target.addEventListener('transitioncancel', this._onTransitionEnd, false);
|
||
|
||
// Safari occasionally does not emit transitionend event
|
||
// if element propery was modified during the transition,
|
||
// which may be caused by resize or third party component,
|
||
// using timeout as a safety fallback
|
||
this._helperTimeout = setTimeout(() => {
|
||
this._finalizeAnimation();
|
||
}, duration + 500);
|
||
target.style[prop] = propValue;
|
||
}, 30); // Do not reduce this number
|
||
}, 0);
|
||
}
|
||
|
||
/**
|
||
* @private
|
||
* @param {TransitionEvent} e
|
||
*/
|
||
_onTransitionEnd(e) {
|
||
if (e.target === this._target) {
|
||
this._finalizeAnimation();
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @private
|
||
*/
|
||
_finalizeAnimation() {
|
||
if (!this._finished) {
|
||
this._finished = true;
|
||
this.onFinish();
|
||
if (this._onComplete) {
|
||
this._onComplete();
|
||
}
|
||
}
|
||
}
|
||
|
||
// Destroy is called automatically onFinish
|
||
destroy() {
|
||
if (this._helperTimeout) {
|
||
clearTimeout(this._helperTimeout);
|
||
}
|
||
removeTransitionStyle(this._target);
|
||
this._target.removeEventListener('transitionend', this._onTransitionEnd, false);
|
||
this._target.removeEventListener('transitioncancel', this._onTransitionEnd, false);
|
||
if (!this._finished) {
|
||
this._finalizeAnimation();
|
||
}
|
||
}
|
||
}
|
||
|
||
const DEFAULT_NATURAL_FREQUENCY = 12;
|
||
const DEFAULT_DAMPING_RATIO = 0.75;
|
||
|
||
/**
|
||
* Spring easing helper
|
||
*/
|
||
class SpringEaser {
|
||
/**
|
||
* @param {number} initialVelocity Initial velocity, px per ms.
|
||
*
|
||
* @param {number} dampingRatio
|
||
* Determines how bouncy animation will be.
|
||
* From 0 to 1, 0 - always overshoot, 1 - do not overshoot.
|
||
* "overshoot" refers to part of animation that
|
||
* goes beyond the final value.
|
||
*
|
||
* @param {number} naturalFrequency
|
||
* Determines how fast animation will slow down.
|
||
* The higher value - the stiffer the transition will be,
|
||
* and the faster it will slow down.
|
||
* Recommended value from 10 to 50
|
||
*/
|
||
constructor(initialVelocity, dampingRatio, naturalFrequency) {
|
||
this.velocity = initialVelocity * 1000; // convert to "pixels per second"
|
||
|
||
// https://en.wikipedia.org/wiki/Damping_ratio
|
||
this._dampingRatio = dampingRatio || DEFAULT_DAMPING_RATIO;
|
||
|
||
// https://en.wikipedia.org/wiki/Natural_frequency
|
||
this._naturalFrequency = naturalFrequency || DEFAULT_NATURAL_FREQUENCY;
|
||
|
||
if (this._dampingRatio < 1) {
|
||
this._dampedFrequency = this._naturalFrequency
|
||
* Math.sqrt(1 - this._dampingRatio * this._dampingRatio);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {number} deltaPosition Difference between current and end position of the animation
|
||
* @param {number} deltaTime Frame duration in milliseconds
|
||
*
|
||
* @returns {number} Displacement, relative to the end position.
|
||
*/
|
||
easeFrame(deltaPosition, deltaTime) {
|
||
// Inspired by Apple Webkit and Android spring function implementation
|
||
// https://en.wikipedia.org/wiki/Oscillation
|
||
// https://en.wikipedia.org/wiki/Damping_ratio
|
||
// we ignore mass (assume that it's 1kg)
|
||
|
||
let displacement = 0;
|
||
let coeff;
|
||
|
||
deltaTime /= 1000;
|
||
|
||
const naturalDumpingPow = Math.E ** (-this._dampingRatio * this._naturalFrequency * deltaTime);
|
||
|
||
if (this._dampingRatio === 1) {
|
||
coeff = this.velocity + this._naturalFrequency * deltaPosition;
|
||
|
||
displacement = (deltaPosition + coeff * deltaTime) * naturalDumpingPow;
|
||
|
||
this.velocity = displacement
|
||
* (-this._naturalFrequency) + coeff
|
||
* naturalDumpingPow;
|
||
} else if (this._dampingRatio < 1) {
|
||
coeff = (1 / this._dampedFrequency)
|
||
* (this._dampingRatio * this._naturalFrequency * deltaPosition + this.velocity);
|
||
|
||
const dumpedFCos = Math.cos(this._dampedFrequency * deltaTime);
|
||
const dumpedFSin = Math.sin(this._dampedFrequency * deltaTime);
|
||
|
||
displacement = naturalDumpingPow
|
||
* (deltaPosition * dumpedFCos + coeff * dumpedFSin);
|
||
|
||
this.velocity = displacement
|
||
* (-this._naturalFrequency)
|
||
* this._dampingRatio
|
||
+ naturalDumpingPow
|
||
* (-this._dampedFrequency * deltaPosition * dumpedFSin
|
||
+ this._dampedFrequency * coeff * dumpedFCos);
|
||
}
|
||
|
||
// Overdamped (>1) damping ratio is not supported
|
||
|
||
return displacement;
|
||
}
|
||
}
|
||
|
||
/** @typedef {import('./animations.js').AnimationProps} AnimationProps */
|
||
|
||
class SpringAnimation {
|
||
/**
|
||
* @param {AnimationProps} props
|
||
*/
|
||
constructor(props) {
|
||
this.props = props;
|
||
|
||
const {
|
||
start,
|
||
end,
|
||
velocity,
|
||
onUpdate,
|
||
onComplete,
|
||
onFinish,
|
||
dampingRatio,
|
||
naturalFrequency
|
||
} = props;
|
||
|
||
/** @type {() => void} */
|
||
this.onFinish = onFinish;
|
||
|
||
const easer = new SpringEaser(velocity, dampingRatio, naturalFrequency);
|
||
let prevTime = Date.now();
|
||
let deltaPosition = start - end;
|
||
|
||
const animationLoop = () => {
|
||
if (this._raf) {
|
||
deltaPosition = easer.easeFrame(deltaPosition, Date.now() - prevTime);
|
||
|
||
// Stop the animation if velocity is low and position is close to end
|
||
if (Math.abs(deltaPosition) < 1 && Math.abs(easer.velocity) < 50) {
|
||
// Finalize the animation
|
||
onUpdate(end);
|
||
if (onComplete) {
|
||
onComplete();
|
||
}
|
||
this.onFinish();
|
||
} else {
|
||
prevTime = Date.now();
|
||
onUpdate(deltaPosition + end);
|
||
this._raf = requestAnimationFrame(animationLoop);
|
||
}
|
||
}
|
||
};
|
||
|
||
this._raf = requestAnimationFrame(animationLoop);
|
||
}
|
||
|
||
// Destroy is called automatically onFinish
|
||
destroy() {
|
||
if (this._raf >= 0) {
|
||
cancelAnimationFrame(this._raf);
|
||
}
|
||
this._raf = null;
|
||
}
|
||
}
|
||
|
||
/** @typedef {SpringAnimation | CSSAnimation} Animation */
|
||
|
||
/**
|
||
* @typedef {Object} AnimationProps
|
||
*
|
||
* @prop {HTMLElement=} target
|
||
*
|
||
* @prop {string=} name
|
||
*
|
||
* @prop {number=} start
|
||
* @prop {number=} end
|
||
* @prop {number=} duration
|
||
* @prop {number=} velocity
|
||
* @prop {number=} dampingRatio
|
||
* @prop {number=} naturalFrequency
|
||
*
|
||
* @prop {(end: number) => void} [onUpdate]
|
||
* @prop {() => void} [onComplete]
|
||
* @prop {() => void} [onFinish]
|
||
*
|
||
* @prop {string=} transform
|
||
* @prop {string=} opacity
|
||
* @prop {string=} easing
|
||
*
|
||
* @prop {boolean=} isPan
|
||
* @prop {boolean=} isMainScroll
|
||
*/
|
||
|
||
/**
|
||
* Manages animations
|
||
*/
|
||
class Animations {
|
||
constructor() {
|
||
/** @type {Animation[]} */
|
||
this.activeAnimations = [];
|
||
}
|
||
|
||
/**
|
||
* @param {AnimationProps} props
|
||
*/
|
||
startSpring(props) {
|
||
this._start(props, true);
|
||
}
|
||
|
||
/**
|
||
* @param {AnimationProps} props
|
||
*/
|
||
startTransition(props) {
|
||
this._start(props);
|
||
}
|
||
|
||
/**
|
||
* @param {AnimationProps} props
|
||
* @param {boolean=} isSpring
|
||
*/
|
||
_start(props, isSpring) {
|
||
/** @type {Animation} */
|
||
let animation;
|
||
if (isSpring) {
|
||
animation = new SpringAnimation(props);
|
||
} else {
|
||
animation = new CSSAnimation(props);
|
||
}
|
||
|
||
this.activeAnimations.push(animation);
|
||
animation.onFinish = () => this.stop(animation);
|
||
|
||
return animation;
|
||
}
|
||
|
||
/**
|
||
* @param {Animation} animation
|
||
*/
|
||
stop(animation) {
|
||
animation.destroy();
|
||
const index = this.activeAnimations.indexOf(animation);
|
||
if (index > -1) {
|
||
this.activeAnimations.splice(index, 1);
|
||
}
|
||
}
|
||
|
||
stopAll() { // _stopAllAnimations
|
||
this.activeAnimations.forEach((animation) => {
|
||
animation.destroy();
|
||
});
|
||
this.activeAnimations = [];
|
||
}
|
||
|
||
/**
|
||
* Stop all pan or zoom transitions
|
||
*/
|
||
stopAllPan() {
|
||
this.activeAnimations = this.activeAnimations.filter((animation) => {
|
||
if (animation.props.isPan) {
|
||
animation.destroy();
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
});
|
||
}
|
||
|
||
stopMainScroll() {
|
||
this.activeAnimations = this.activeAnimations.filter((animation) => {
|
||
if (animation.props.isMainScroll) {
|
||
animation.destroy();
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
});
|
||
}
|
||
|
||
/**
|
||
* Returns true if main scroll transition is running
|
||
*/
|
||
// isMainScrollRunning() {
|
||
// return this.activeAnimations.some((animation) => {
|
||
// return animation.props.isMainScroll;
|
||
// });
|
||
// }
|
||
|
||
/**
|
||
* Returns true if any pan or zoom transition is running
|
||
*/
|
||
isPanRunning() {
|
||
return this.activeAnimations.some((animation) => {
|
||
return animation.props.isPan;
|
||
});
|
||
}
|
||
}
|
||
|
||
/** @typedef {import('./photoswipe.js').default} PhotoSwipe */
|
||
|
||
/**
|
||
* Handles scroll wheel.
|
||
* Can pan and zoom current slide image.
|
||
*/
|
||
class ScrollWheel {
|
||
/**
|
||
* @param {PhotoSwipe} pswp
|
||
*/
|
||
constructor(pswp) {
|
||
this.pswp = pswp;
|
||
pswp.events.add(pswp.element, 'wheel', this._onWheel.bind(this));
|
||
}
|
||
|
||
/**
|
||
* @private
|
||
* @param {WheelEvent} e
|
||
*/
|
||
_onWheel(e) {
|
||
e.preventDefault();
|
||
const { currSlide } = this.pswp;
|
||
let { deltaX, deltaY } = e;
|
||
|
||
if (!currSlide) {
|
||
return;
|
||
}
|
||
|
||
if (this.pswp.dispatch('wheel', { originalEvent: e }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
if (e.ctrlKey || this.pswp.options.wheelToZoom) {
|
||
// zoom
|
||
if (currSlide.isZoomable()) {
|
||
let zoomFactor = -deltaY;
|
||
if (e.deltaMode === 1 /* DOM_DELTA_LINE */) {
|
||
zoomFactor *= 0.05;
|
||
} else {
|
||
zoomFactor *= e.deltaMode ? 1 : 0.002;
|
||
}
|
||
zoomFactor = 2 ** zoomFactor;
|
||
|
||
const destZoomLevel = currSlide.currZoomLevel * zoomFactor;
|
||
currSlide.zoomTo(destZoomLevel, {
|
||
x: e.clientX,
|
||
y: e.clientY
|
||
});
|
||
}
|
||
} else {
|
||
// pan
|
||
if (currSlide.isPannable()) {
|
||
if (e.deltaMode === 1 /* DOM_DELTA_LINE */) {
|
||
// 18 - average line height
|
||
deltaX *= 18;
|
||
deltaY *= 18;
|
||
}
|
||
|
||
currSlide.panTo(
|
||
currSlide.pan.x - deltaX,
|
||
currSlide.pan.y - deltaY
|
||
);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/** @typedef {import('../photoswipe.js').default} PhotoSwipe */
|
||
|
||
/**
|
||
* @template T
|
||
* @typedef {import('../types.js').Methods<T>} Methods<T>
|
||
*/
|
||
|
||
/**
|
||
* @typedef {Object} UIElementMarkupProps
|
||
* @prop {boolean=} isCustomSVG
|
||
* @prop {string} inner
|
||
* @prop {string=} outlineID
|
||
* @prop {number | string} [size]
|
||
*/
|
||
|
||
/**
|
||
* @typedef {Object} UIElementData
|
||
* @prop {DefaultUIElements | string} [name]
|
||
* @prop {string=} className
|
||
* @prop {UIElementMarkup=} html
|
||
* @prop {boolean=} isButton
|
||
* @prop {keyof HTMLElementTagNameMap} [tagName]
|
||
* @prop {string=} title
|
||
* @prop {string=} ariaLabel
|
||
* @prop {(element: HTMLElement, pswp: PhotoSwipe) => void} [onInit]
|
||
* @prop {Methods<PhotoSwipe> | ((e: MouseEvent, element: HTMLElement, pswp: PhotoSwipe) => void)} [onClick]
|
||
* @prop {'bar' | 'wrapper' | 'root'} [appendTo]
|
||
* @prop {number=} order
|
||
*/
|
||
|
||
/** @typedef {'arrowPrev' | 'arrowNext' | 'close' | 'zoom' | 'counter'} DefaultUIElements */
|
||
|
||
/** @typedef {string | UIElementMarkupProps} UIElementMarkup */
|
||
|
||
/**
|
||
* @param {UIElementMarkup} [htmlData]
|
||
*/
|
||
function addElementHTML(htmlData) {
|
||
if (typeof htmlData === 'string') {
|
||
// Allow developers to provide full svg,
|
||
// For example:
|
||
// <svg viewBox="0 0 32 32" width="32" height="32" aria-hidden="true" class="pswp__icn">
|
||
// <path d="..." />
|
||
// <circle ... />
|
||
// </svg>
|
||
// Can also be any HTML string.
|
||
return htmlData;
|
||
}
|
||
|
||
if (!htmlData || !htmlData.isCustomSVG) {
|
||
return '';
|
||
}
|
||
|
||
const svgData = htmlData;
|
||
let out = '<svg aria-hidden="true" class="pswp__icn" viewBox="0 0 %d %d" width="%d" height="%d">';
|
||
// replace all %d with size
|
||
out = out.split('%d').join(/** @type {string} */ (svgData.size || 32));
|
||
|
||
// Icons may contain outline/shadow,
|
||
// to make it we "clone" base icon shape and add border to it.
|
||
// Icon itself and border are styled via CSS.
|
||
//
|
||
// Property shadowID defines ID of element that should be cloned.
|
||
if (svgData.outlineID) {
|
||
out += '<use class="pswp__icn-shadow" xlink:href="#' + svgData.outlineID + '"/>';
|
||
}
|
||
|
||
out += svgData.inner;
|
||
|
||
out += '</svg>';
|
||
|
||
return out;
|
||
}
|
||
|
||
class UIElement {
|
||
/**
|
||
* @param {PhotoSwipe} pswp
|
||
* @param {UIElementData} data
|
||
*/
|
||
constructor(pswp, data) {
|
||
const name = data.name || data.className;
|
||
let elementHTML = data.html;
|
||
|
||
// @ts-expect-error lookup only by `data.name` maybe?
|
||
if (pswp.options[name] === false) {
|
||
// exit if element is disabled from options
|
||
return;
|
||
}
|
||
|
||
// Allow to override SVG icons from options
|
||
// @ts-expect-error lookup only by `data.name` maybe?
|
||
if (typeof pswp.options[name + 'SVG'] === 'string') {
|
||
// arrowPrevSVG
|
||
// arrowNextSVG
|
||
// closeSVG
|
||
// zoomSVG
|
||
// @ts-expect-error lookup only by `data.name` maybe?
|
||
elementHTML = pswp.options[name + 'SVG'];
|
||
}
|
||
|
||
pswp.dispatch('uiElementCreate', { data });
|
||
|
||
let className = '';
|
||
if (data.isButton) {
|
||
className += 'pswp__button ';
|
||
className += (data.className || `pswp__button--${data.name}`);
|
||
} else {
|
||
className += (data.className || `pswp__${data.name}`);
|
||
}
|
||
|
||
/** @type {HTMLElement} */
|
||
let element;
|
||
let tagName = data.isButton ? (data.tagName || 'button') : (data.tagName || 'div');
|
||
tagName = /** @type {keyof HTMLElementTagNameMap} */ (tagName.toLowerCase());
|
||
element = createElement(className, tagName);
|
||
|
||
if (data.isButton) {
|
||
// create button element
|
||
element = createElement(className, tagName);
|
||
if (tagName === 'button') {
|
||
/** @type {HTMLButtonElement} */ (element).type = 'button';
|
||
}
|
||
|
||
let { title } = data;
|
||
const { ariaLabel } = data;
|
||
|
||
// @ts-expect-error lookup only by `data.name` maybe?
|
||
if (typeof pswp.options[name + 'Title'] === 'string') {
|
||
// @ts-expect-error lookup only by `data.name` maybe?
|
||
title = pswp.options[name + 'Title'];
|
||
}
|
||
|
||
if (title) {
|
||
element.title = title;
|
||
}
|
||
|
||
if (ariaLabel || title) {
|
||
/** @type {HTMLElement} */ (element).setAttribute('aria-label', ariaLabel || title);
|
||
}
|
||
}
|
||
|
||
element.innerHTML = addElementHTML(elementHTML);
|
||
|
||
if (data.onInit) {
|
||
data.onInit(element, pswp);
|
||
}
|
||
|
||
if (data.onClick) {
|
||
element.onclick = (e) => {
|
||
if (typeof data.onClick === 'string') {
|
||
pswp[data.onClick]();
|
||
} else {
|
||
data.onClick(e, element, pswp);
|
||
}
|
||
};
|
||
}
|
||
|
||
// Top bar is default position
|
||
const appendTo = data.appendTo || 'bar';
|
||
let container;
|
||
if (appendTo === 'bar') {
|
||
if (!pswp.topBar) {
|
||
pswp.topBar = createElement('pswp__top-bar pswp__hide-on-close', 'div', pswp.scrollWrap);
|
||
}
|
||
container = pswp.topBar;
|
||
} else {
|
||
// element outside of top bar gets a secondary class
|
||
// that makes element fade out on close
|
||
element.classList.add('pswp__hide-on-close');
|
||
|
||
if (appendTo === 'wrapper') {
|
||
container = pswp.scrollWrap;
|
||
} else {
|
||
// root element
|
||
container = pswp.element;
|
||
}
|
||
}
|
||
|
||
container.appendChild(pswp.applyFilters('uiElement', element, data));
|
||
}
|
||
}
|
||
|
||
/*
|
||
Backward and forward arrow buttons
|
||
*/
|
||
|
||
/** @typedef {import('./ui-element.js').UIElementData} UIElementData */
|
||
/** @typedef {import('../photoswipe.js').default} PhotoSwipe */
|
||
|
||
/**
|
||
*
|
||
* @param {HTMLElement} element
|
||
* @param {PhotoSwipe} pswp
|
||
* @param {boolean=} isNextButton
|
||
*/
|
||
function initArrowButton(element, pswp, isNextButton) {
|
||
element.classList.add('pswp__button--arrow');
|
||
pswp.on('change', () => {
|
||
if (!pswp.options.loop) {
|
||
if (isNextButton) {
|
||
/** @type {HTMLButtonElement} */
|
||
(element).disabled = !(pswp.currIndex < pswp.getNumItems() - 1);
|
||
} else {
|
||
/** @type {HTMLButtonElement} */
|
||
(element).disabled = !(pswp.currIndex > 0);
|
||
}
|
||
}
|
||
});
|
||
}
|
||
|
||
/** @type {UIElementData} */
|
||
const arrowPrev = {
|
||
name: 'arrowPrev',
|
||
className: 'pswp__button--arrow--prev',
|
||
title: 'Previous',
|
||
order: 10,
|
||
isButton: true,
|
||
appendTo: 'wrapper',
|
||
html: {
|
||
isCustomSVG: true,
|
||
size: 60,
|
||
inner: '<path d="M29 43l-3 3-16-16 16-16 3 3-13 13 13 13z" id="pswp__icn-arrow"/>',
|
||
outlineID: 'pswp__icn-arrow'
|
||
},
|
||
onClick: 'prev',
|
||
onInit: initArrowButton
|
||
};
|
||
|
||
/** @type {UIElementData} */
|
||
const arrowNext = {
|
||
name: 'arrowNext',
|
||
className: 'pswp__button--arrow--next',
|
||
title: 'Next',
|
||
order: 11,
|
||
isButton: true,
|
||
appendTo: 'wrapper',
|
||
html: {
|
||
isCustomSVG: true,
|
||
size: 60,
|
||
inner: '<use xlink:href="#pswp__icn-arrow"/>',
|
||
outlineID: 'pswp__icn-arrow'
|
||
},
|
||
onClick: 'next',
|
||
onInit: (el, pswp) => {
|
||
initArrowButton(el, pswp, true);
|
||
}
|
||
};
|
||
|
||
/** @type {import('./ui-element.js').UIElementData} UIElementData */
|
||
const closeButton = {
|
||
name: 'close',
|
||
title: 'Close',
|
||
order: 20,
|
||
isButton: true,
|
||
html: {
|
||
isCustomSVG: true,
|
||
inner: '<path d="M24 10l-2-2-6 6-6-6-2 2 6 6-6 6 2 2 6-6 6 6 2-2-6-6z" id="pswp__icn-close"/>',
|
||
outlineID: 'pswp__icn-close'
|
||
},
|
||
onClick: 'close'
|
||
};
|
||
|
||
/** @type {import('./ui-element.js').UIElementData} UIElementData */
|
||
const zoomButton = {
|
||
name: 'zoom',
|
||
title: 'Zoom',
|
||
order: 10,
|
||
isButton: true,
|
||
html: {
|
||
isCustomSVG: true,
|
||
// eslint-disable-next-line max-len
|
||
inner: '<path d="M17.426 19.926a6 6 0 1 1 1.5-1.5L23 22.5 21.5 24l-4.074-4.074z" id="pswp__icn-zoom"/>'
|
||
+ '<path fill="currentColor" class="pswp__zoom-icn-bar-h" d="M11 16v-2h6v2z"/>'
|
||
+ '<path fill="currentColor" class="pswp__zoom-icn-bar-v" d="M13 12h2v6h-2z"/>',
|
||
outlineID: 'pswp__icn-zoom'
|
||
},
|
||
onClick: 'toggleZoom'
|
||
};
|
||
|
||
/** @type {import('./ui-element.js').UIElementData} UIElementData */
|
||
const loadingIndicator = {
|
||
name: 'preloader',
|
||
appendTo: 'bar',
|
||
order: 7,
|
||
html: {
|
||
isCustomSVG: true,
|
||
// eslint-disable-next-line max-len
|
||
inner: '<path fill-rule="evenodd" clip-rule="evenodd" d="M21.2 16a5.2 5.2 0 1 1-5.2-5.2V8a8 8 0 1 0 8 8h-2.8Z" id="pswp__icn-loading"/>',
|
||
outlineID: 'pswp__icn-loading'
|
||
},
|
||
onInit: (indicatorElement, pswp) => {
|
||
/** @type {boolean} */
|
||
let isVisible;
|
||
/** @type {NodeJS.Timeout} */
|
||
let delayTimeout;
|
||
|
||
/**
|
||
* @param {string} className
|
||
* @param {boolean} add
|
||
*/
|
||
const toggleIndicatorClass = (className, add) => {
|
||
indicatorElement.classList[add ? 'add' : 'remove']('pswp__preloader--' + className);
|
||
};
|
||
|
||
/**
|
||
* @param {boolean} visible
|
||
*/
|
||
const setIndicatorVisibility = (visible) => {
|
||
if (isVisible !== visible) {
|
||
isVisible = visible;
|
||
toggleIndicatorClass('active', visible);
|
||
}
|
||
};
|
||
|
||
const updatePreloaderVisibility = () => {
|
||
if (!pswp.currSlide.content.isLoading()) {
|
||
setIndicatorVisibility(false);
|
||
if (delayTimeout) {
|
||
clearTimeout(delayTimeout);
|
||
delayTimeout = null;
|
||
}
|
||
return;
|
||
}
|
||
|
||
if (!delayTimeout) {
|
||
// display loading indicator with delay
|
||
delayTimeout = setTimeout(() => {
|
||
setIndicatorVisibility(pswp.currSlide.content.isLoading());
|
||
delayTimeout = null;
|
||
}, pswp.options.preloaderDelay);
|
||
}
|
||
};
|
||
|
||
pswp.on('change', updatePreloaderVisibility);
|
||
|
||
pswp.on('loadComplete', (e) => {
|
||
if (pswp.currSlide === e.slide) {
|
||
updatePreloaderVisibility();
|
||
}
|
||
});
|
||
|
||
// expose the method
|
||
pswp.ui.updatePreloaderVisibility = updatePreloaderVisibility;
|
||
}
|
||
};
|
||
|
||
/** @type {import('./ui-element.js').UIElementData} UIElementData */
|
||
const counterIndicator = {
|
||
name: 'counter',
|
||
order: 5,
|
||
onInit: (counterElement, pswp) => {
|
||
pswp.on('change', () => {
|
||
counterElement.innerText = (pswp.currIndex + 1)
|
||
+ pswp.options.indexIndicatorSep
|
||
+ pswp.getNumItems();
|
||
});
|
||
}
|
||
};
|
||
|
||
/** @typedef {import('../photoswipe.js').default} PhotoSwipe */
|
||
/** @typedef {import('./ui-element.js').UIElementData} UIElementData */
|
||
|
||
/**
|
||
* Set special class on element when image is zoomed.
|
||
*
|
||
* By default it is used to adjust
|
||
* zoom icon and zoom cursor via CSS.
|
||
*
|
||
* @param {HTMLElement} el
|
||
* @param {boolean} isZoomedIn
|
||
*/
|
||
function setZoomedIn(el, isZoomedIn) {
|
||
el.classList[isZoomedIn ? 'add' : 'remove']('pswp--zoomed-in');
|
||
}
|
||
|
||
class UI {
|
||
/**
|
||
* @param {PhotoSwipe} pswp
|
||
*/
|
||
constructor(pswp) {
|
||
this.pswp = pswp;
|
||
|
||
/** @type {() => void} */
|
||
this.updatePreloaderVisibility = undefined;
|
||
|
||
/** @type {number} */
|
||
this._lastUpdatedZoomLevel = undefined;
|
||
}
|
||
|
||
init() {
|
||
const { pswp } = this;
|
||
this.isRegistered = false;
|
||
/** @type {UIElementData[]} */
|
||
this.uiElementsData = [
|
||
closeButton,
|
||
arrowPrev,
|
||
arrowNext,
|
||
zoomButton,
|
||
loadingIndicator,
|
||
counterIndicator
|
||
];
|
||
|
||
pswp.dispatch('uiRegister');
|
||
|
||
// sort by order
|
||
this.uiElementsData.sort((a, b) => {
|
||
// default order is 0
|
||
return (a.order || 0) - (b.order || 0);
|
||
});
|
||
|
||
/** @type {(UIElement | UIElementData)[]} */
|
||
this.items = [];
|
||
|
||
this.isRegistered = true;
|
||
this.uiElementsData.forEach((uiElementData) => {
|
||
this.registerElement(uiElementData);
|
||
});
|
||
|
||
pswp.on('change', () => {
|
||
pswp.element.classList[pswp.getNumItems() === 1 ? 'add' : 'remove']('pswp--one-slide');
|
||
});
|
||
|
||
pswp.on('zoomPanUpdate', () => this._onZoomPanUpdate());
|
||
}
|
||
|
||
/**
|
||
* @param {UIElementData} elementData
|
||
*/
|
||
registerElement(elementData) {
|
||
if (this.isRegistered) {
|
||
this.items.push(
|
||
new UIElement(this.pswp, elementData)
|
||
);
|
||
} else {
|
||
this.uiElementsData.push(elementData);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Fired each time zoom or pan position is changed.
|
||
* Update classes that control visibility of zoom button and cursor icon.
|
||
*/
|
||
_onZoomPanUpdate() {
|
||
const { template, currSlide, options } = this.pswp;
|
||
let { currZoomLevel } = currSlide;
|
||
|
||
if (this.pswp.opener.isClosing) {
|
||
return;
|
||
}
|
||
|
||
// if not open yet - check against initial zoom level
|
||
if (!this.pswp.opener.isOpen) {
|
||
currZoomLevel = currSlide.zoomLevels.initial;
|
||
}
|
||
|
||
if (currZoomLevel === this._lastUpdatedZoomLevel) {
|
||
return;
|
||
}
|
||
this._lastUpdatedZoomLevel = currZoomLevel;
|
||
|
||
const currZoomLevelDiff = currSlide.zoomLevels.initial - currSlide.zoomLevels.secondary;
|
||
|
||
// Initial and secondary zoom levels are almost equal
|
||
if (Math.abs(currZoomLevelDiff) < 0.01 || !currSlide.isZoomable()) {
|
||
// disable zoom
|
||
setZoomedIn(template, false);
|
||
template.classList.remove('pswp--zoom-allowed');
|
||
return;
|
||
}
|
||
|
||
template.classList.add('pswp--zoom-allowed');
|
||
|
||
const potentialZoomLevel = currZoomLevel === currSlide.zoomLevels.initial
|
||
? currSlide.zoomLevels.secondary : currSlide.zoomLevels.initial;
|
||
|
||
setZoomedIn(template, potentialZoomLevel <= currZoomLevel);
|
||
|
||
if (options.imageClickAction === 'zoom'
|
||
|| options.imageClickAction === 'zoom-or-close') {
|
||
template.classList.add('pswp--click-to-zoom');
|
||
}
|
||
}
|
||
}
|
||
|
||
/** @typedef {import('./slide.js').SlideData} SlideData */
|
||
/** @typedef {import('../photoswipe.js').default} PhotoSwipe */
|
||
|
||
/** @typedef {{ x: number; y: number; w: number; innerRect?: { w: number; h: number; x: number; y: number } }} Bounds */
|
||
|
||
/**
|
||
* @param {HTMLElement} el
|
||
*/
|
||
function getBoundsByElement(el) {
|
||
const thumbAreaRect = el.getBoundingClientRect();
|
||
return {
|
||
x: thumbAreaRect.left,
|
||
y: thumbAreaRect.top,
|
||
w: thumbAreaRect.width
|
||
};
|
||
}
|
||
|
||
/**
|
||
* @param {HTMLElement} el
|
||
* @param {number} imageWidth
|
||
* @param {number} imageHeight
|
||
*/
|
||
function getCroppedBoundsByElement(el, imageWidth, imageHeight) {
|
||
const thumbAreaRect = el.getBoundingClientRect();
|
||
|
||
// fill image into the area
|
||
// (do they same as object-fit:cover does to retrieve coordinates)
|
||
const hRatio = thumbAreaRect.width / imageWidth;
|
||
const vRatio = thumbAreaRect.height / imageHeight;
|
||
const fillZoomLevel = hRatio > vRatio ? hRatio : vRatio;
|
||
|
||
const offsetX = (thumbAreaRect.width - imageWidth * fillZoomLevel) / 2;
|
||
const offsetY = (thumbAreaRect.height - imageHeight * fillZoomLevel) / 2;
|
||
|
||
/**
|
||
* Coordinates of the image,
|
||
* as if it was not cropped,
|
||
* height is calculated automatically
|
||
*
|
||
* @type {Bounds}
|
||
*/
|
||
const bounds = {
|
||
x: thumbAreaRect.left + offsetX,
|
||
y: thumbAreaRect.top + offsetY,
|
||
w: imageWidth * fillZoomLevel
|
||
};
|
||
|
||
// Coordinates of inner crop area
|
||
// relative to the image
|
||
bounds.innerRect = {
|
||
w: thumbAreaRect.width,
|
||
h: thumbAreaRect.height,
|
||
x: offsetX,
|
||
y: offsetY
|
||
};
|
||
|
||
return bounds;
|
||
}
|
||
|
||
/**
|
||
* Get dimensions of thumbnail image
|
||
* (click on which opens photoswipe or closes photoswipe to)
|
||
*
|
||
* @param {number} index
|
||
* @param {SlideData} itemData
|
||
* @param {PhotoSwipe} instance PhotoSwipe instance
|
||
* @returns {Bounds | undefined}
|
||
*/
|
||
function getThumbBounds(index, itemData, instance) {
|
||
// legacy event, before filters were introduced
|
||
const event = instance.dispatch('thumbBounds', {
|
||
index,
|
||
itemData,
|
||
instance
|
||
});
|
||
// @ts-expect-error
|
||
if (event.thumbBounds) {
|
||
// @ts-expect-error
|
||
return event.thumbBounds;
|
||
}
|
||
|
||
const { element } = itemData;
|
||
let thumbBounds;
|
||
/** @type {HTMLElement} */
|
||
let thumbnail;
|
||
|
||
if (element && instance.options.thumbSelector !== false) {
|
||
const thumbSelector = instance.options.thumbSelector || 'img';
|
||
thumbnail = element.matches(thumbSelector)
|
||
? element : element.querySelector(thumbSelector);
|
||
}
|
||
|
||
thumbnail = instance.applyFilters('thumbEl', thumbnail, itemData, index);
|
||
|
||
if (thumbnail) {
|
||
if (!itemData.thumbCropped) {
|
||
thumbBounds = getBoundsByElement(thumbnail);
|
||
} else {
|
||
thumbBounds = getCroppedBoundsByElement(
|
||
thumbnail,
|
||
itemData.width || itemData.w,
|
||
itemData.height || itemData.h
|
||
);
|
||
}
|
||
}
|
||
|
||
return instance.applyFilters('thumbBounds', thumbBounds, itemData, index);
|
||
}
|
||
|
||
/** @typedef {import('../lightbox/lightbox.js').default} PhotoSwipeLightbox */
|
||
/** @typedef {import('../photoswipe.js').default} PhotoSwipe */
|
||
/** @typedef {import('../photoswipe.js').PhotoSwipeOptions} PhotoSwipeOptions */
|
||
/** @typedef {import('../photoswipe.js').DataSource} DataSource */
|
||
/** @typedef {import('../ui/ui-element.js').UIElementData} UIElementData */
|
||
/** @typedef {import('../slide/content.js').default} ContentDefault */
|
||
/** @typedef {import('../slide/slide.js').default} Slide */
|
||
/** @typedef {import('../slide/slide.js').SlideData} SlideData */
|
||
/** @typedef {import('../slide/zoom-level.js').default} ZoomLevel */
|
||
/** @typedef {import('../slide/get-thumb-bounds.js').Bounds} Bounds */
|
||
|
||
/**
|
||
* Allow adding an arbitrary props to the Content
|
||
* https://photoswipe.com/custom-content/#using-webp-image-format
|
||
* @typedef {ContentDefault & Record<string, any>} Content
|
||
*/
|
||
/** @typedef {{ x?: number; y?: number }} Point */
|
||
|
||
/**
|
||
* @typedef {Object} PhotoSwipeEventsMap https://photoswipe.com/events/
|
||
*
|
||
*
|
||
* https://photoswipe.com/adding-ui-elements/
|
||
*
|
||
* @prop {undefined} uiRegister
|
||
* @prop {{ data: UIElementData }} uiElementCreate
|
||
*
|
||
*
|
||
* https://photoswipe.com/events/#initialization-events
|
||
*
|
||
* @prop {undefined} beforeOpen
|
||
* @prop {undefined} firstUpdate
|
||
* @prop {undefined} initialLayout
|
||
* @prop {undefined} change
|
||
* @prop {undefined} afterInit
|
||
* @prop {undefined} bindEvents
|
||
*
|
||
*
|
||
* https://photoswipe.com/events/#opening-or-closing-transition-events
|
||
*
|
||
* @prop {undefined} openingAnimationStart
|
||
* @prop {undefined} openingAnimationEnd
|
||
* @prop {undefined} closingAnimationStart
|
||
* @prop {undefined} closingAnimationEnd
|
||
*
|
||
*
|
||
* https://photoswipe.com/events/#closing-events
|
||
*
|
||
* @prop {undefined} close
|
||
* @prop {undefined} destroy
|
||
*
|
||
*
|
||
* https://photoswipe.com/events/#pointer-and-gesture-events
|
||
*
|
||
* @prop {{ originalEvent: PointerEvent }} pointerDown
|
||
* @prop {{ originalEvent: PointerEvent }} pointerMove
|
||
* @prop {{ originalEvent: PointerEvent }} pointerUp
|
||
* @prop {{ bgOpacity: number }} pinchClose can be default prevented
|
||
* @prop {{ panY: number }} verticalDrag can be default prevented
|
||
*
|
||
*
|
||
* https://photoswipe.com/events/#slide-content-events
|
||
*
|
||
* @prop {{ content: Content }} contentInit
|
||
* @prop {{ content: Content; isLazy: boolean }} contentLoad can be default prevented
|
||
* @prop {{ content: Content; isLazy: boolean }} contentLoadImage can be default prevented
|
||
* @prop {{ content: Content; slide: Slide; isError?: boolean }} loadComplete
|
||
* @prop {{ content: Content; slide: Slide }} loadError
|
||
* @prop {{ content: Content; width: number; height: number }} contentResize can be default prevented
|
||
* @prop {{ content: Content; width: number; height: number; slide: Slide }} imageSizeChange
|
||
* @prop {{ content: Content }} contentLazyLoad can be default prevented
|
||
* @prop {{ content: Content }} contentAppend can be default prevented
|
||
* @prop {{ content: Content }} contentActivate can be default prevented
|
||
* @prop {{ content: Content }} contentDeactivate can be default prevented
|
||
* @prop {{ content: Content }} contentRemove can be default prevented
|
||
* @prop {{ content: Content }} contentDestroy can be default prevented
|
||
*
|
||
*
|
||
* undocumented
|
||
*
|
||
* @prop {{ point: Point; originalEvent: PointerEvent }} imageClickAction can be default prevented
|
||
* @prop {{ point: Point; originalEvent: PointerEvent }} bgClickAction can be default prevented
|
||
* @prop {{ point: Point; originalEvent: PointerEvent }} tapAction can be default prevented
|
||
* @prop {{ point: Point; originalEvent: PointerEvent }} doubleTapAction can be default prevented
|
||
*
|
||
* @prop {{ originalEvent: KeyboardEvent }} keydown can be default prevented
|
||
* @prop {{ x: number; dragging: boolean }} moveMainScroll
|
||
* @prop {{ slide: Slide }} firstZoomPan
|
||
* @prop {{ slide: Slide, data: SlideData, index: number }} gettingData
|
||
* @prop {undefined} beforeResize
|
||
* @prop {undefined} resize
|
||
* @prop {undefined} viewportSize
|
||
* @prop {undefined} updateScrollOffset
|
||
* @prop {{ slide: Slide }} slideInit
|
||
* @prop {{ slide: Slide }} afterSetContent
|
||
* @prop {{ slide: Slide }} slideLoad
|
||
* @prop {{ slide: Slide }} appendHeavy can be default prevented
|
||
* @prop {{ slide: Slide }} appendHeavyContent
|
||
* @prop {{ slide: Slide }} slideActivate
|
||
* @prop {{ slide: Slide }} slideDeactivate
|
||
* @prop {{ slide: Slide }} slideDestroy
|
||
* @prop {{ destZoomLevel: number, centerPoint: Point, transitionDuration: number | false }} beforeZoomTo
|
||
* @prop {{ slide: Slide }} zoomPanUpdate
|
||
* @prop {{ slide: Slide }} initialZoomPan
|
||
* @prop {{ slide: Slide }} calcSlideSize
|
||
* @prop {undefined} resolutionChanged
|
||
* @prop {{ originalEvent: WheelEvent }} wheel can be default prevented
|
||
* @prop {{ content: Content }} contentAppendImage can be default prevented
|
||
* @prop {{ index: number; itemData: SlideData }} lazyLoadSlide can be default prevented
|
||
* @prop {undefined} lazyLoad
|
||
* @prop {{ slide: Slide }} calcBounds
|
||
* @prop {{ zoomLevels: ZoomLevel, slideData: SlideData }} zoomLevelsUpdate
|
||
*
|
||
*
|
||
* legacy
|
||
*
|
||
* @prop {undefined} init
|
||
* @prop {undefined} initialZoomIn
|
||
* @prop {undefined} initialZoomOut
|
||
* @prop {undefined} initialZoomInEnd
|
||
* @prop {undefined} initialZoomOutEnd
|
||
* @prop {{ dataSource: DataSource, numItems: number }} numItems
|
||
* @prop {{ itemData: SlideData; index: number }} itemData
|
||
* @prop {{ index: number, itemData: SlideData, instance: PhotoSwipe }} thumbBounds
|
||
*/
|
||
|
||
/**
|
||
* @typedef {Object} PhotoSwipeFiltersMap https://photoswipe.com/filters/
|
||
*
|
||
* @prop {(numItems: number, dataSource: DataSource) => number} numItems
|
||
* Modify the total amount of slides. Example on Data sources page.
|
||
* https://photoswipe.com/filters/#numitems
|
||
*
|
||
* @prop {(itemData: SlideData, index: number) => SlideData} itemData
|
||
* Modify slide item data. Example on Data sources page.
|
||
* https://photoswipe.com/filters/#itemdata
|
||
*
|
||
* @prop {(itemData: SlideData, element: HTMLElement, linkEl: HTMLAnchorElement) => SlideData} domItemData
|
||
* Modify item data when it's parsed from DOM element. Example on Data sources page.
|
||
* https://photoswipe.com/filters/#domitemdata
|
||
*
|
||
* @prop {(clickedIndex: number, e: MouseEvent, instance: PhotoSwipeLightbox) => number} clickedIndex
|
||
* Modify clicked gallery item index.
|
||
* https://photoswipe.com/filters/#clickedindex
|
||
*
|
||
* @prop {(placeholderSrc: string | false, content: Content) => string | false} placeholderSrc
|
||
* Modify placeholder image source.
|
||
* https://photoswipe.com/filters/#placeholdersrc
|
||
*
|
||
* @prop {(isContentLoading: boolean, content: Content) => boolean} isContentLoading
|
||
* Modify if the content is currently loading.
|
||
* https://photoswipe.com/filters/#iscontentloading
|
||
*
|
||
* @prop {(isContentZoomable: boolean, content: Content) => boolean} isContentZoomable
|
||
* Modify if the content can be zoomed.
|
||
* https://photoswipe.com/filters/#iscontentzoomable
|
||
*
|
||
* @prop {(useContentPlaceholder: boolean, content: Content) => boolean} useContentPlaceholder
|
||
* Modify if the placeholder should be used for the content.
|
||
* https://photoswipe.com/filters/#usecontentplaceholder
|
||
*
|
||
* @prop {(isKeepingPlaceholder: boolean, content: Content) => boolean} isKeepingPlaceholder
|
||
* Modify if the placeholder should be kept after the content is loaded.
|
||
* https://photoswipe.com/filters/#iskeepingplaceholder
|
||
*
|
||
*
|
||
* @prop {(contentErrorElement: HTMLElement, content: Content) => HTMLElement} contentErrorElement
|
||
* Modify an element when the content has error state (for example, if image cannot be loaded).
|
||
* https://photoswipe.com/filters/#contenterrorelement
|
||
*
|
||
* @prop {(element: HTMLElement, data: UIElementData) => HTMLElement} uiElement
|
||
* Modify a UI element that's being created.
|
||
* https://photoswipe.com/filters/#uielement
|
||
*
|
||
* @prop {(thumbnail: HTMLElement, itemData: SlideData, index: number) => HTMLElement} thumbEl
|
||
* Modify the thubmnail element from which opening zoom animation starts or ends.
|
||
* https://photoswipe.com/filters/#thumbel
|
||
*
|
||
* @prop {(thumbBounds: Bounds, itemData: SlideData, index: number) => Bounds} thumbBounds
|
||
* Modify the thubmnail bounds from which opening zoom animation starts or ends.
|
||
* https://photoswipe.com/filters/#thumbbounds
|
||
*
|
||
* @prop {(srcsetSizesWidth: number, content: Content) => number} srcsetSizesWidth
|
||
*
|
||
*/
|
||
|
||
/**
|
||
* @template {keyof PhotoSwipeFiltersMap} T
|
||
* @typedef {{ fn: PhotoSwipeFiltersMap[T], priority: number }} Filter<T>
|
||
*/
|
||
|
||
/**
|
||
* @template {keyof PhotoSwipeEventsMap} T
|
||
* @typedef {PhotoSwipeEventsMap[T] extends undefined ? PhotoSwipeEvent<T> : PhotoSwipeEvent<T> & PhotoSwipeEventsMap[T]} AugmentedEvent
|
||
*/
|
||
|
||
/**
|
||
* @template {keyof PhotoSwipeEventsMap} T
|
||
* @typedef {(event: AugmentedEvent<T>) => void} EventCallback<T>
|
||
*/
|
||
|
||
/**
|
||
* Base PhotoSwipe event object
|
||
*
|
||
* @template {keyof PhotoSwipeEventsMap} T
|
||
*/
|
||
class PhotoSwipeEvent {
|
||
/**
|
||
* @param {T} type
|
||
* @param {PhotoSwipeEventsMap[T]} [details]
|
||
*/
|
||
constructor(type, details) {
|
||
this.type = type;
|
||
if (details) {
|
||
Object.assign(this, details);
|
||
}
|
||
}
|
||
|
||
preventDefault() {
|
||
this.defaultPrevented = true;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* PhotoSwipe base class that can listen and dispatch for events.
|
||
* Shared by PhotoSwipe Core and PhotoSwipe Lightbox, extended by base.js
|
||
*/
|
||
class Eventable {
|
||
constructor() {
|
||
/**
|
||
* @type {{ [T in keyof PhotoSwipeEventsMap]?: ((event: AugmentedEvent<T>) => void)[] }}
|
||
*/
|
||
this._listeners = {};
|
||
|
||
/**
|
||
* @type {{ [T in keyof PhotoSwipeFiltersMap]?: Filter<T>[] }}
|
||
*/
|
||
this._filters = {};
|
||
|
||
/** @type {PhotoSwipe=} */
|
||
this.pswp = undefined;
|
||
|
||
/** @type {PhotoSwipeOptions} */
|
||
this.options = undefined;
|
||
}
|
||
|
||
/**
|
||
* @template {keyof PhotoSwipeFiltersMap} T
|
||
* @param {T} name
|
||
* @param {PhotoSwipeFiltersMap[T]} fn
|
||
* @param {number} priority
|
||
*/
|
||
addFilter(name, fn, priority = 100) {
|
||
if (!this._filters[name]) {
|
||
this._filters[name] = [];
|
||
}
|
||
|
||
this._filters[name].push({ fn, priority });
|
||
this._filters[name].sort((f1, f2) => f1.priority - f2.priority);
|
||
|
||
if (this.pswp) {
|
||
this.pswp.addFilter(name, fn, priority);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @template {keyof PhotoSwipeFiltersMap} T
|
||
* @param {T} name
|
||
* @param {PhotoSwipeFiltersMap[T]} fn
|
||
*/
|
||
removeFilter(name, fn) {
|
||
if (this._filters[name]) {
|
||
// @ts-expect-error
|
||
this._filters[name] = this._filters[name].filter(filter => (filter.fn !== fn));
|
||
}
|
||
|
||
if (this.pswp) {
|
||
this.pswp.removeFilter(name, fn);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @template {keyof PhotoSwipeFiltersMap} T
|
||
* @param {T} name
|
||
* @param {Parameters<PhotoSwipeFiltersMap[T]>} args
|
||
* @returns {Parameters<PhotoSwipeFiltersMap[T]>[0]}
|
||
*/
|
||
applyFilters(name, ...args) {
|
||
if (this._filters[name]) {
|
||
this._filters[name].forEach((filter) => {
|
||
// @ts-expect-error
|
||
args[0] = filter.fn.apply(this, args);
|
||
});
|
||
}
|
||
return args[0];
|
||
}
|
||
|
||
/**
|
||
* @template {keyof PhotoSwipeEventsMap} T
|
||
* @param {T} name
|
||
* @param {EventCallback<T>} fn
|
||
*/
|
||
on(name, fn) {
|
||
if (!this._listeners[name]) {
|
||
this._listeners[name] = [];
|
||
}
|
||
this._listeners[name].push(fn);
|
||
|
||
// When binding events to lightbox,
|
||
// also bind events to PhotoSwipe Core,
|
||
// if it's open.
|
||
if (this.pswp) {
|
||
this.pswp.on(name, fn);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @template {keyof PhotoSwipeEventsMap} T
|
||
* @param {T} name
|
||
* @param {EventCallback<T>} fn
|
||
*/
|
||
off(name, fn) {
|
||
if (this._listeners[name]) {
|
||
// @ts-expect-error
|
||
this._listeners[name] = this._listeners[name].filter(listener => (fn !== listener));
|
||
}
|
||
|
||
if (this.pswp) {
|
||
this.pswp.off(name, fn);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @template {keyof PhotoSwipeEventsMap} T
|
||
* @param {T} name
|
||
* @param {PhotoSwipeEventsMap[T]} [details]
|
||
* @returns {AugmentedEvent<T>}
|
||
*/
|
||
dispatch(name, details) {
|
||
if (this.pswp) {
|
||
return this.pswp.dispatch(name, details);
|
||
}
|
||
|
||
const event = /** @type {AugmentedEvent<T>} */ (new PhotoSwipeEvent(name, details));
|
||
|
||
if (!this._listeners) {
|
||
return event;
|
||
}
|
||
|
||
if (this._listeners[name]) {
|
||
this._listeners[name].forEach((listener) => {
|
||
listener.call(this, event);
|
||
});
|
||
}
|
||
|
||
return event;
|
||
}
|
||
}
|
||
|
||
class Placeholder {
|
||
/**
|
||
* @param {string | false} imageSrc
|
||
* @param {HTMLElement} container
|
||
*/
|
||
constructor(imageSrc, container) {
|
||
// Create placeholder
|
||
// (stretched thumbnail or simple div behind the main image)
|
||
this.element = createElement(
|
||
'pswp__img pswp__img--placeholder',
|
||
imageSrc ? 'img' : '',
|
||
container
|
||
);
|
||
|
||
if (imageSrc) {
|
||
/** @type {HTMLImageElement} */
|
||
(this.element).decoding = 'async';
|
||
/** @type {HTMLImageElement} */
|
||
(this.element).alt = '';
|
||
/** @type {HTMLImageElement} */
|
||
(this.element).src = imageSrc;
|
||
this.element.setAttribute('role', 'presentation');
|
||
}
|
||
|
||
this.element.setAttribute('aria-hiden', 'true');
|
||
}
|
||
|
||
/**
|
||
* @param {number} width
|
||
* @param {number} height
|
||
*/
|
||
setDisplayedSize(width, height) {
|
||
if (!this.element) {
|
||
return;
|
||
}
|
||
|
||
if (this.element.tagName === 'IMG') {
|
||
// Use transform scale() to modify img placeholder size
|
||
// (instead of changing width/height directly).
|
||
// This helps with performance, specifically in iOS15 Safari.
|
||
setWidthHeight(this.element, 250, 'auto');
|
||
this.element.style.transformOrigin = '0 0';
|
||
this.element.style.transform = toTransformString(0, 0, width / 250);
|
||
} else {
|
||
setWidthHeight(this.element, width, height);
|
||
}
|
||
}
|
||
|
||
destroy() {
|
||
if (this.element.parentNode) {
|
||
this.element.remove();
|
||
}
|
||
this.element = null;
|
||
}
|
||
}
|
||
|
||
/** @typedef {import('./slide.js').default} Slide */
|
||
/** @typedef {import('./slide.js').SlideData} SlideData */
|
||
/** @typedef {import('../photoswipe.js').default} PhotoSwipe */
|
||
/** @typedef {import('../util/util.js').LoadState} LoadState */
|
||
|
||
class Content {
|
||
/**
|
||
* @param {SlideData} itemData Slide data
|
||
* @param {PhotoSwipe} instance PhotoSwipe or PhotoSwipeLightbox instance
|
||
* @param {number} index
|
||
*/
|
||
constructor(itemData, instance, index) {
|
||
this.instance = instance;
|
||
this.data = itemData;
|
||
this.index = index;
|
||
|
||
/** @type {HTMLImageElement | HTMLDivElement} */
|
||
this.element = undefined;
|
||
|
||
this.displayedImageWidth = 0;
|
||
this.displayedImageHeight = 0;
|
||
|
||
this.width = Number(this.data.w) || Number(this.data.width) || 0;
|
||
this.height = Number(this.data.h) || Number(this.data.height) || 0;
|
||
|
||
this.isAttached = false;
|
||
this.hasSlide = false;
|
||
/** @type {LoadState} */
|
||
this.state = LOAD_STATE.IDLE;
|
||
|
||
if (this.data.type) {
|
||
this.type = this.data.type;
|
||
} else if (this.data.src) {
|
||
this.type = 'image';
|
||
} else {
|
||
this.type = 'html';
|
||
}
|
||
|
||
this.instance.dispatch('contentInit', { content: this });
|
||
}
|
||
|
||
removePlaceholder() {
|
||
if (this.placeholder && !this.keepPlaceholder()) {
|
||
// With delay, as image might be loaded, but not rendered
|
||
setTimeout(() => {
|
||
if (this.placeholder) {
|
||
this.placeholder.destroy();
|
||
this.placeholder = null;
|
||
}
|
||
}, 1000);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Preload content
|
||
*
|
||
* @param {boolean=} isLazy
|
||
* @param {boolean=} reload
|
||
*/
|
||
load(isLazy, reload) {
|
||
if (this.slide && this.usePlaceholder()) {
|
||
if (!this.placeholder) {
|
||
const placeholderSrc = this.instance.applyFilters(
|
||
'placeholderSrc',
|
||
// use image-based placeholder only for the first slide,
|
||
// as rendering (even small stretched thumbnail) is an expensive operation
|
||
(this.data.msrc && this.slide.isFirstSlide) ? this.data.msrc : false,
|
||
this
|
||
);
|
||
this.placeholder = new Placeholder(
|
||
placeholderSrc,
|
||
this.slide.container
|
||
);
|
||
} else {
|
||
const placeholderEl = this.placeholder.element;
|
||
// Add placeholder to DOM if it was already created
|
||
if (placeholderEl && !placeholderEl.parentElement) {
|
||
this.slide.container.prepend(placeholderEl);
|
||
}
|
||
}
|
||
}
|
||
|
||
if (this.element && !reload) {
|
||
return;
|
||
}
|
||
|
||
if (this.instance.dispatch('contentLoad', { content: this, isLazy }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
if (this.isImageContent()) {
|
||
this.element = createElement('pswp__img', 'img');
|
||
// Start loading only after width is defined, as sizes might depend on it.
|
||
// Due to Safari feature, we must define sizes before srcset.
|
||
if (this.displayedImageWidth) {
|
||
this.loadImage(isLazy);
|
||
}
|
||
} else {
|
||
this.element = createElement('pswp__content');
|
||
this.element.innerHTML = this.data.html || '';
|
||
}
|
||
|
||
if (reload && this.slide) {
|
||
this.slide.updateContentSize(true);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Preload image
|
||
*
|
||
* @param {boolean} isLazy
|
||
*/
|
||
loadImage(isLazy) {
|
||
const imageElement = /** @type HTMLImageElement */ (this.element);
|
||
|
||
if (this.instance.dispatch('contentLoadImage', { content: this, isLazy }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
this.updateSrcsetSizes();
|
||
|
||
if (this.data.srcset) {
|
||
imageElement.srcset = this.data.srcset;
|
||
}
|
||
|
||
imageElement.src = this.data.src;
|
||
|
||
imageElement.alt = this.data.alt || '';
|
||
|
||
this.state = LOAD_STATE.LOADING;
|
||
|
||
if (imageElement.complete) {
|
||
this.onLoaded();
|
||
} else {
|
||
imageElement.onload = () => {
|
||
this.onLoaded();
|
||
};
|
||
|
||
imageElement.onerror = () => {
|
||
this.onError();
|
||
};
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Assign slide to content
|
||
*
|
||
* @param {Slide} slide
|
||
*/
|
||
setSlide(slide) {
|
||
this.slide = slide;
|
||
this.hasSlide = true;
|
||
this.instance = slide.pswp;
|
||
|
||
// todo: do we need to unset slide?
|
||
}
|
||
|
||
/**
|
||
* Content load success handler
|
||
*/
|
||
onLoaded() {
|
||
this.state = LOAD_STATE.LOADED;
|
||
|
||
if (this.slide) {
|
||
this.instance.dispatch('loadComplete', { slide: this.slide, content: this });
|
||
|
||
// if content is reloaded
|
||
if (this.slide.isActive
|
||
&& this.slide.heavyAppended
|
||
&& !this.element.parentNode) {
|
||
this.append();
|
||
this.slide.updateContentSize(true);
|
||
}
|
||
|
||
if (this.state === LOAD_STATE.LOADED || this.state === LOAD_STATE.ERROR) {
|
||
this.removePlaceholder();
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Content load error handler
|
||
*/
|
||
onError() {
|
||
this.state = LOAD_STATE.ERROR;
|
||
|
||
if (this.slide) {
|
||
this.displayError();
|
||
this.instance.dispatch('loadComplete', { slide: this.slide, isError: true, content: this });
|
||
this.instance.dispatch('loadError', { slide: this.slide, content: this });
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @returns {Boolean} If the content is currently loading
|
||
*/
|
||
isLoading() {
|
||
return this.instance.applyFilters(
|
||
'isContentLoading',
|
||
this.state === LOAD_STATE.LOADING,
|
||
this
|
||
);
|
||
}
|
||
|
||
isError() {
|
||
return this.state === LOAD_STATE.ERROR;
|
||
}
|
||
|
||
/**
|
||
* @returns {boolean} If the content is image
|
||
*/
|
||
isImageContent() {
|
||
return this.type === 'image';
|
||
}
|
||
|
||
/**
|
||
* Update content size
|
||
*
|
||
* @param {Number} width
|
||
* @param {Number} height
|
||
*/
|
||
setDisplayedSize(width, height) {
|
||
if (!this.element) {
|
||
return;
|
||
}
|
||
|
||
if (this.placeholder) {
|
||
this.placeholder.setDisplayedSize(width, height);
|
||
}
|
||
|
||
// eslint-disable-next-line max-len
|
||
if (this.instance.dispatch('contentResize', { content: this, width, height }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
setWidthHeight(this.element, width, height);
|
||
|
||
if (this.isImageContent() && !this.isError()) {
|
||
const isInitialSizeUpdate = (!this.displayedImageWidth && width);
|
||
|
||
this.displayedImageWidth = width;
|
||
this.displayedImageHeight = height;
|
||
|
||
if (isInitialSizeUpdate) {
|
||
this.loadImage(false);
|
||
} else {
|
||
this.updateSrcsetSizes();
|
||
}
|
||
|
||
if (this.slide) {
|
||
// eslint-disable-next-line max-len
|
||
this.instance.dispatch('imageSizeChange', { slide: this.slide, width, height, content: this });
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @returns {boolean} If the content can be zoomed
|
||
*/
|
||
isZoomable() {
|
||
return this.instance.applyFilters(
|
||
'isContentZoomable',
|
||
this.isImageContent() && (this.state !== LOAD_STATE.ERROR),
|
||
this
|
||
);
|
||
}
|
||
|
||
/**
|
||
* Update image srcset sizes attribute based on width and height
|
||
*/
|
||
updateSrcsetSizes() {
|
||
// Handle srcset sizes attribute.
|
||
//
|
||
// Never lower quality, if it was increased previously.
|
||
// Chrome does this automatically, Firefox and Safari do not,
|
||
// so we store largest used size in dataset.
|
||
// Handle srcset sizes attribute.
|
||
//
|
||
// Never lower quality, if it was increased previously.
|
||
// Chrome does this automatically, Firefox and Safari do not,
|
||
// so we store largest used size in dataset.
|
||
if (this.data.srcset) {
|
||
const image = /** @type HTMLImageElement */ (this.element);
|
||
const sizesWidth = this.instance.applyFilters(
|
||
'srcsetSizesWidth',
|
||
this.displayedImageWidth,
|
||
this
|
||
);
|
||
|
||
if (!image.dataset.largestUsedSize
|
||
|| sizesWidth > parseInt(image.dataset.largestUsedSize, 10)) {
|
||
image.sizes = sizesWidth + 'px';
|
||
image.dataset.largestUsedSize = String(sizesWidth);
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @returns {boolean} If content should use a placeholder (from msrc by default)
|
||
*/
|
||
usePlaceholder() {
|
||
return this.instance.applyFilters(
|
||
'useContentPlaceholder',
|
||
this.isImageContent(),
|
||
this
|
||
);
|
||
}
|
||
|
||
/**
|
||
* Preload content with lazy-loading param
|
||
*/
|
||
lazyLoad() {
|
||
if (this.instance.dispatch('contentLazyLoad', { content: this }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
this.load(true);
|
||
}
|
||
|
||
/**
|
||
* @returns {boolean} If placeholder should be kept after content is loaded
|
||
*/
|
||
keepPlaceholder() {
|
||
return this.instance.applyFilters(
|
||
'isKeepingPlaceholder',
|
||
this.isLoading(),
|
||
this
|
||
);
|
||
}
|
||
|
||
/**
|
||
* Destroy the content
|
||
*/
|
||
destroy() {
|
||
this.hasSlide = false;
|
||
this.slide = null;
|
||
|
||
if (this.instance.dispatch('contentDestroy', { content: this }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
this.remove();
|
||
|
||
if (this.placeholder) {
|
||
this.placeholder.destroy();
|
||
this.placeholder = null;
|
||
}
|
||
|
||
if (this.isImageContent() && this.element) {
|
||
this.element.onload = null;
|
||
this.element.onerror = null;
|
||
this.element = null;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Display error message
|
||
*/
|
||
displayError() {
|
||
if (this.slide) {
|
||
/** @type {HTMLElement} */
|
||
let errorMsgEl = createElement('pswp__error-msg');
|
||
errorMsgEl.innerText = this.instance.options.errorMsg;
|
||
errorMsgEl = this.instance.applyFilters(
|
||
'contentErrorElement',
|
||
errorMsgEl,
|
||
this
|
||
);
|
||
this.element = createElement('pswp__content pswp__error-msg-container');
|
||
this.element.appendChild(errorMsgEl);
|
||
this.slide.container.innerText = '';
|
||
this.slide.container.appendChild(this.element);
|
||
this.slide.updateContentSize(true);
|
||
this.removePlaceholder();
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Append the content
|
||
*/
|
||
append() {
|
||
if (this.isAttached) {
|
||
return;
|
||
}
|
||
|
||
this.isAttached = true;
|
||
|
||
if (this.state === LOAD_STATE.ERROR) {
|
||
this.displayError();
|
||
return;
|
||
}
|
||
|
||
if (this.instance.dispatch('contentAppend', { content: this }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
const supportsDecode = ('decode' in this.element);
|
||
|
||
if (this.isImageContent()) {
|
||
// Use decode() on nearby slides
|
||
//
|
||
// Nearby slide images are in DOM and not hidden via display:none.
|
||
// However, they are placed offscreen (to the left and right side).
|
||
//
|
||
// Some browsers do not composite the image until it's actually visible,
|
||
// using decode() helps.
|
||
//
|
||
// You might ask "why dont you just decode() and then append all images",
|
||
// that's because I want to show image before it's fully loaded,
|
||
// as browser can render parts of image while it is loading.
|
||
// We do not do this in Safari due to partial loading bug.
|
||
if (supportsDecode && this.slide && (!this.slide.isActive || isSafari())) {
|
||
this.isDecoding = true;
|
||
// purposefully using finally instead of then,
|
||
// as if srcset sizes changes dynamically - it may cause decode error
|
||
/** @type {HTMLImageElement} */
|
||
(this.element).decode().finally(() => {
|
||
this.isDecoding = false;
|
||
this.appendImage();
|
||
});
|
||
} else {
|
||
this.appendImage();
|
||
}
|
||
} else if (this.element && !this.element.parentNode) {
|
||
this.slide.container.appendChild(this.element);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Activate the slide,
|
||
* active slide is generally the current one,
|
||
* meaning the user can see it.
|
||
*/
|
||
activate() {
|
||
if (this.instance.dispatch('contentActivate', { content: this }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
if (this.slide) {
|
||
if (this.isImageContent() && this.isDecoding && !isSafari()) {
|
||
// add image to slide when it becomes active,
|
||
// even if it's not finished decoding
|
||
this.appendImage();
|
||
} else if (this.isError()) {
|
||
this.load(false, true); // try to reload
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Deactivate the content
|
||
*/
|
||
deactivate() {
|
||
this.instance.dispatch('contentDeactivate', { content: this });
|
||
}
|
||
|
||
|
||
/**
|
||
* Remove the content from DOM
|
||
*/
|
||
remove() {
|
||
this.isAttached = false;
|
||
|
||
if (this.instance.dispatch('contentRemove', { content: this }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
if (this.element && this.element.parentNode) {
|
||
this.element.remove();
|
||
}
|
||
|
||
if (this.placeholder && this.placeholder.element) {
|
||
this.placeholder.element.remove();
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Append the image content to slide container
|
||
*/
|
||
appendImage() {
|
||
if (!this.isAttached) {
|
||
return;
|
||
}
|
||
|
||
if (this.instance.dispatch('contentAppendImage', { content: this }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
// ensure that element exists and is not already appended
|
||
if (this.slide && this.element && !this.element.parentNode) {
|
||
this.slide.container.appendChild(this.element);
|
||
}
|
||
|
||
if (this.state === LOAD_STATE.LOADED || this.state === LOAD_STATE.ERROR) {
|
||
this.removePlaceholder();
|
||
}
|
||
}
|
||
}
|
||
|
||
/** @typedef {import('./content.js').default} Content */
|
||
/** @typedef {import('./slide.js').default} Slide */
|
||
/** @typedef {import('./slide.js').SlideData} SlideData */
|
||
/** @typedef {import('../core/base.js').default} PhotoSwipeBase */
|
||
/** @typedef {import('../photoswipe.js').default} PhotoSwipe */
|
||
/** @typedef {import('../lightbox/lightbox.js').default} PhotoSwipeLightbox */
|
||
|
||
const MIN_SLIDES_TO_CACHE = 5;
|
||
|
||
/**
|
||
* Lazy-load an image
|
||
* This function is used both by Lightbox and PhotoSwipe core,
|
||
* thus it can be called before dialog is opened.
|
||
*
|
||
* @param {SlideData} itemData Data about the slide
|
||
* @param {PhotoSwipe | PhotoSwipeLightbox | PhotoSwipeBase} instance PhotoSwipe instance
|
||
* @param {number} index
|
||
* @returns Image that is being decoded or false.
|
||
*/
|
||
function lazyLoadData(itemData, instance, index) {
|
||
// src/slide/content/content.js
|
||
const content = instance.createContentFromData(itemData, index);
|
||
|
||
if (!content || !content.lazyLoad) {
|
||
return;
|
||
}
|
||
|
||
const { options } = instance;
|
||
|
||
// We need to know dimensions of the image to preload it,
|
||
// as it might use srcset and we need to define sizes
|
||
// @ts-expect-error should provide pswp instance?
|
||
const viewportSize = instance.viewportSize || getViewportSize(options, instance);
|
||
const panAreaSize = getPanAreaSize(options, viewportSize, itemData, index);
|
||
|
||
const zoomLevel = new ZoomLevel(options, itemData, -1);
|
||
zoomLevel.update(content.width, content.height, panAreaSize);
|
||
|
||
content.lazyLoad();
|
||
content.setDisplayedSize(
|
||
Math.ceil(content.width * zoomLevel.initial),
|
||
Math.ceil(content.height * zoomLevel.initial)
|
||
);
|
||
|
||
return content;
|
||
}
|
||
|
||
|
||
/**
|
||
* Lazy-loads specific slide.
|
||
* This function is used both by Lightbox and PhotoSwipe core,
|
||
* thus it can be called before dialog is opened.
|
||
*
|
||
* By default it loads image based on viewport size and initial zoom level.
|
||
*
|
||
* @param {number} index Slide index
|
||
* @param {PhotoSwipe | PhotoSwipeLightbox} instance PhotoSwipe or PhotoSwipeLightbox eventable instance
|
||
*/
|
||
function lazyLoadSlide(index, instance) {
|
||
const itemData = instance.getItemData(index);
|
||
|
||
if (instance.dispatch('lazyLoadSlide', { index, itemData }).defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
return lazyLoadData(itemData, instance, index);
|
||
}
|
||
|
||
|
||
class ContentLoader {
|
||
/**
|
||
* @param {PhotoSwipe} pswp
|
||
*/
|
||
constructor(pswp) {
|
||
this.pswp = pswp;
|
||
// Total amount of cached images
|
||
this.limit = Math.max(
|
||
pswp.options.preload[0] + pswp.options.preload[1] + 1,
|
||
MIN_SLIDES_TO_CACHE
|
||
);
|
||
/** @type {Content[]} */
|
||
this._cachedItems = [];
|
||
}
|
||
|
||
/**
|
||
* Lazy load nearby slides based on `preload` option.
|
||
*
|
||
* @param {number=} diff Difference between slide indexes that was changed recently, or 0.
|
||
*/
|
||
updateLazy(diff) {
|
||
const { pswp } = this;
|
||
|
||
if (pswp.dispatch('lazyLoad').defaultPrevented) {
|
||
return;
|
||
}
|
||
|
||
const { preload } = pswp.options;
|
||
const isForward = diff === undefined ? true : (diff >= 0);
|
||
let i;
|
||
|
||
// preload[1] - num items to preload in forward direction
|
||
for (i = 0; i <= preload[1]; i++) {
|
||
this.loadSlideByIndex(pswp.currIndex + (isForward ? i : (-i)));
|
||
}
|
||
|
||
// preload[0] - num items to preload in backward direction
|
||
for (i = 1; i <= preload[0]; i++) {
|
||
this.loadSlideByIndex(pswp.currIndex + (isForward ? (-i) : i));
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {number} index
|
||
*/
|
||
loadSlideByIndex(index) {
|
||
index = this.pswp.getLoopedIndex(index);
|
||
// try to get cached content
|
||
let content = this.getContentByIndex(index);
|
||
if (!content) {
|
||
// no cached content, so try to load from scratch:
|
||
content = lazyLoadSlide(index, this.pswp);
|
||
// if content can be loaded, add it to cache:
|
||
if (content) {
|
||
this.addToCache(content);
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {Slide} slide
|
||
*/
|
||
getContentBySlide(slide) {
|
||
let content = this.getContentByIndex(slide.index);
|
||
if (!content) {
|
||
// create content if not found in cache
|
||
content = this.pswp.createContentFromData(slide.data, slide.index);
|
||
if (content) {
|
||
this.addToCache(content);
|
||
}
|
||
}
|
||
|
||
if (content) {
|
||
// assign slide to content
|
||
content.setSlide(slide);
|
||
}
|
||
return content;
|
||
}
|
||
|
||
/**
|
||
* @param {Content} content
|
||
*/
|
||
addToCache(content) {
|
||
// move to the end of array
|
||
this.removeByIndex(content.index);
|
||
this._cachedItems.push(content);
|
||
|
||
if (this._cachedItems.length > this.limit) {
|
||
// Destroy the first content that's not attached
|
||
const indexToRemove = this._cachedItems.findIndex((item) => {
|
||
return !item.isAttached && !item.hasSlide;
|
||
});
|
||
if (indexToRemove !== -1) {
|
||
const removedItem = this._cachedItems.splice(indexToRemove, 1)[0];
|
||
removedItem.destroy();
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Removes an image from cache, does not destroy() it, just removes.
|
||
*
|
||
* @param {number} index
|
||
*/
|
||
removeByIndex(index) {
|
||
const indexToRemove = this._cachedItems.findIndex(item => item.index === index);
|
||
if (indexToRemove !== -1) {
|
||
this._cachedItems.splice(indexToRemove, 1);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {number} index
|
||
*/
|
||
getContentByIndex(index) {
|
||
return this._cachedItems.find(content => content.index === index);
|
||
}
|
||
|
||
destroy() {
|
||
this._cachedItems.forEach(content => content.destroy());
|
||
this._cachedItems = null;
|
||
}
|
||
}
|
||
|
||
/** @typedef {import("../photoswipe.js").default} PhotoSwipe */
|
||
/** @typedef {import("../photoswipe.js").PhotoSwipeOptions} PhotoSwipeOptions */
|
||
/** @typedef {import("../slide/slide.js").SlideData} SlideData */
|
||
|
||
/**
|
||
* PhotoSwipe base class that can retrieve data about every slide.
|
||
* Shared by PhotoSwipe Core and PhotoSwipe Lightbox
|
||
*/
|
||
class PhotoSwipeBase extends Eventable {
|
||
/**
|
||
* Get total number of slides
|
||
*
|
||
* @returns {number}
|
||
*/
|
||
getNumItems() {
|
||
let numItems;
|
||
const { dataSource } = this.options;
|
||
if (!dataSource) {
|
||
numItems = 0;
|
||
} else if ('length' in dataSource) {
|
||
// may be an array or just object with length property
|
||
numItems = dataSource.length;
|
||
} else if ('gallery' in dataSource) {
|
||
// query DOM elements
|
||
if (!dataSource.items) {
|
||
dataSource.items = this._getGalleryDOMElements(dataSource.gallery);
|
||
}
|
||
|
||
if (dataSource.items) {
|
||
numItems = dataSource.items.length;
|
||
}
|
||
}
|
||
|
||
// legacy event, before filters were introduced
|
||
const event = this.dispatch('numItems', {
|
||
dataSource,
|
||
numItems
|
||
});
|
||
return this.applyFilters('numItems', event.numItems, dataSource);
|
||
}
|
||
|
||
/**
|
||
* @param {SlideData} slideData
|
||
* @param {number} index
|
||
*/
|
||
createContentFromData(slideData, index) {
|
||
// @ts-expect-error
|
||
return new Content(slideData, this, index);
|
||
}
|
||
|
||
/**
|
||
* Get item data by index.
|
||
*
|
||
* "item data" should contain normalized information that PhotoSwipe needs to generate a slide.
|
||
* For example, it may contain properties like
|
||
* `src`, `srcset`, `w`, `h`, which will be used to generate a slide with image.
|
||
*
|
||
* @param {number} index
|
||
*/
|
||
getItemData(index) {
|
||
const { dataSource } = this.options;
|
||
let dataSourceItem;
|
||
if (Array.isArray(dataSource)) {
|
||
// Datasource is an array of elements
|
||
dataSourceItem = dataSource[index];
|
||
} else if (dataSource && dataSource.gallery) {
|
||
// dataSource has gallery property,
|
||
// thus it was created by Lightbox, based on
|
||
// gallery and children options
|
||
|
||
// query DOM elements
|
||
if (!dataSource.items) {
|
||
dataSource.items = this._getGalleryDOMElements(dataSource.gallery);
|
||
}
|
||
|
||
dataSourceItem = dataSource.items[index];
|
||
}
|
||
|
||
let itemData = dataSourceItem;
|
||
|
||
if (itemData instanceof Element) {
|
||
itemData = this._domElementToItemData(itemData);
|
||
}
|
||
|
||
// Dispatching the itemData event,
|
||
// it's a legacy verion before filters were introduced
|
||
const event = this.dispatch('itemData', {
|
||
itemData: itemData || {},
|
||
index
|
||
});
|
||
|
||
return this.applyFilters('itemData', event.itemData, index);
|
||
}
|
||
|
||
/**
|
||
* Get array of gallery DOM elements,
|
||
* based on childSelector and gallery element.
|
||
*
|
||
* @param {HTMLElement} galleryElement
|
||
*/
|
||
_getGalleryDOMElements(galleryElement) {
|
||
if (this.options.children || this.options.childSelector) {
|
||
return getElementsFromOption(
|
||
this.options.children,
|
||
this.options.childSelector,
|
||
galleryElement
|
||
) || [];
|
||
}
|
||
|
||
return [galleryElement];
|
||
}
|
||
|
||
/**
|
||
* Converts DOM element to item data object.
|
||
*
|
||
* @param {HTMLElement} element DOM element
|
||
*/
|
||
// eslint-disable-next-line class-methods-use-this
|
||
_domElementToItemData(element) {
|
||
/** @type {SlideData} */
|
||
const itemData = {
|
||
element
|
||
};
|
||
|
||
// eslint-disable-next-line max-len
|
||
const linkEl = /** @type {HTMLAnchorElement} */ (element.tagName === 'A' ? element : element.querySelector('a'));
|
||
|
||
if (linkEl) {
|
||
// src comes from data-pswp-src attribute,
|
||
// if it's empty link href is used
|
||
itemData.src = linkEl.dataset.pswpSrc || linkEl.href;
|
||
|
||
if (linkEl.dataset.pswpSrcset) {
|
||
itemData.srcset = linkEl.dataset.pswpSrcset;
|
||
}
|
||
|
||
itemData.width = parseInt(linkEl.dataset.pswpWidth, 10);
|
||
itemData.height = parseInt(linkEl.dataset.pswpHeight, 10);
|
||
|
||
// support legacy w & h properties
|
||
itemData.w = itemData.width;
|
||
itemData.h = itemData.height;
|
||
|
||
if (linkEl.dataset.pswpType) {
|
||
itemData.type = linkEl.dataset.pswpType;
|
||
}
|
||
|
||
const thumbnailEl = element.querySelector('img');
|
||
|
||
if (thumbnailEl) {
|
||
// msrc is URL to placeholder image that's displayed before large image is loaded
|
||
// by default it's displayed only for the first slide
|
||
itemData.msrc = thumbnailEl.currentSrc || thumbnailEl.src;
|
||
itemData.alt = thumbnailEl.getAttribute('alt');
|
||
}
|
||
|
||
if (linkEl.dataset.pswpCropped || linkEl.dataset.cropped) {
|
||
itemData.thumbCropped = true;
|
||
}
|
||
}
|
||
|
||
return this.applyFilters('domItemData', itemData, element, linkEl);
|
||
}
|
||
|
||
/**
|
||
* Lazy-load by slide data
|
||
*
|
||
* @param {SlideData} itemData Data about the slide
|
||
* @param {number} index
|
||
* @returns Image that is being decoded or false.
|
||
*/
|
||
lazyLoadData(itemData, index) {
|
||
return lazyLoadData(itemData, this, index);
|
||
}
|
||
}
|
||
|
||
/** @typedef {import('./photoswipe.js').default} PhotoSwipe */
|
||
/** @typedef {import('./slide/get-thumb-bounds.js').Bounds} Bounds */
|
||
/** @typedef {import('./util/animations.js').AnimationProps} AnimationProps */
|
||
|
||
// some browsers do not paint
|
||
// elements which opacity is set to 0,
|
||
// since we need to pre-render elements for the animation -
|
||
// we set it to the minimum amount
|
||
const MIN_OPACITY = 0.003;
|
||
|
||
/**
|
||
* Manages opening and closing transitions of the PhotoSwipe.
|
||
*
|
||
* It can perform zoom, fade or no transition.
|
||
*/
|
||
class Opener {
|
||
/**
|
||
* @param {PhotoSwipe} pswp
|
||
*/
|
||
constructor(pswp) {
|
||
this.pswp = pswp;
|
||
this.isClosed = true;
|
||
this._prepareOpen = this._prepareOpen.bind(this);
|
||
|
||
/** @type {false | Bounds} */
|
||
this._thumbBounds = undefined;
|
||
|
||
// Override initial zoom and pan position
|
||
pswp.on('firstZoomPan', this._prepareOpen);
|
||
}
|
||
|
||
open() {
|
||
this._prepareOpen();
|
||
this._start();
|
||
}
|
||
|
||
close() {
|
||
if (this.isClosed || this.isClosing || this.isOpening) {
|
||
// if we close during opening animation
|
||
// for now do nothing,
|
||
// browsers aren't good at changing the direction of the CSS transition
|
||
return false;
|
||
}
|
||
|
||
const slide = this.pswp.currSlide;
|
||
|
||
this.isOpen = false;
|
||
this.isOpening = false;
|
||
this.isClosing = true;
|
||
this._duration = this.pswp.options.hideAnimationDuration;
|
||
|
||
if (slide && slide.currZoomLevel * slide.width >= this.pswp.options.maxWidthToAnimate) {
|
||
this._duration = 0;
|
||
}
|
||
|
||
this._applyStartProps();
|
||
setTimeout(() => {
|
||
this._start();
|
||
}, this._croppedZoom ? 30 : 0);
|
||
|
||
return true;
|
||
}
|
||
|
||
_prepareOpen() {
|
||
this.pswp.off('firstZoomPan', this._prepareOpen);
|
||
if (!this.isOpening) {
|
||
const slide = this.pswp.currSlide;
|
||
this.isOpening = true;
|
||
this.isClosing = false;
|
||
this._duration = this.pswp.options.showAnimationDuration;
|
||
if (slide && slide.zoomLevels.initial * slide.width >= this.pswp.options.maxWidthToAnimate) {
|
||
this._duration = 0;
|
||
}
|
||
this._applyStartProps();
|
||
}
|
||
}
|
||
|
||
_applyStartProps() {
|
||
const { pswp } = this;
|
||
const slide = this.pswp.currSlide;
|
||
const { options } = pswp;
|
||
|
||
if (options.showHideAnimationType === 'fade') {
|
||
options.showHideOpacity = true;
|
||
this._thumbBounds = false;
|
||
} else if (options.showHideAnimationType === 'none') {
|
||
options.showHideOpacity = false;
|
||
this._duration = 0;
|
||
this._thumbBounds = false;
|
||
} else if (this.isOpening && pswp._initialThumbBounds) {
|
||
// Use initial bounds if defined
|
||
this._thumbBounds = pswp._initialThumbBounds;
|
||
} else {
|
||
this._thumbBounds = this.pswp.getThumbBounds();
|
||
}
|
||
|
||
this._placeholder = slide.getPlaceholderElement();
|
||
|
||
pswp.animations.stopAll();
|
||
|
||
// Discard animations when duration is less than 50ms
|
||
this._useAnimation = (this._duration > 50);
|
||
this._animateZoom = Boolean(this._thumbBounds)
|
||
&& (slide.content && slide.content.usePlaceholder())
|
||
&& (!this.isClosing || !pswp.mainScroll.isShifted());
|
||
if (!this._animateZoom) {
|
||
this._animateRootOpacity = true;
|
||
|
||
if (this.isOpening) {
|
||
slide.zoomAndPanToInitial();
|
||
slide.applyCurrentZoomPan();
|
||
}
|
||
} else {
|
||
this._animateRootOpacity = options.showHideOpacity;
|
||
}
|
||
this._animateBgOpacity = !this._animateRootOpacity && this.pswp.options.bgOpacity > MIN_OPACITY;
|
||
this._opacityElement = this._animateRootOpacity ? pswp.element : pswp.bg;
|
||
|
||
if (!this._useAnimation) {
|
||
this._duration = 0;
|
||
this._animateZoom = false;
|
||
this._animateBgOpacity = false;
|
||
this._animateRootOpacity = true;
|
||
if (this.isOpening) {
|
||
pswp.element.style.opacity = String(MIN_OPACITY);
|
||
pswp.applyBgOpacity(1);
|
||
}
|
||
return;
|
||
}
|
||
|
||
if (this._animateZoom && this._thumbBounds && this._thumbBounds.innerRect) {
|
||
// Properties are used when animation from cropped thumbnail
|
||
this._croppedZoom = true;
|
||
this._cropContainer1 = this.pswp.container;
|
||
this._cropContainer2 = this.pswp.currSlide.holderElement;
|
||
|
||
pswp.container.style.overflow = 'hidden';
|
||
pswp.container.style.width = pswp.viewportSize.x + 'px';
|
||
} else {
|
||
this._croppedZoom = false;
|
||
}
|
||
|
||
if (this.isOpening) {
|
||
// Apply styles before opening transition
|
||
if (this._animateRootOpacity) {
|
||
pswp.element.style.opacity = String(MIN_OPACITY);
|
||
pswp.applyBgOpacity(1);
|
||
} else {
|
||
if (this._animateBgOpacity) {
|
||
pswp.bg.style.opacity = String(MIN_OPACITY);
|
||
}
|
||
pswp.element.style.opacity = '1';
|
||
}
|
||
|
||
if (this._animateZoom) {
|
||
this._setClosedStateZoomPan();
|
||
if (this._placeholder) {
|
||
// tell browser that we plan to animate the placeholder
|
||
this._placeholder.style.willChange = 'transform';
|
||
|
||
// hide placeholder to allow hiding of
|
||
// elements that overlap it (such as icons over the thumbnail)
|
||
this._placeholder.style.opacity = String(MIN_OPACITY);
|
||
}
|
||
}
|
||
} else if (this.isClosing) {
|
||
// hide nearby slides to make sure that
|
||
// they are not painted during the transition
|
||
pswp.mainScroll.itemHolders[0].el.style.display = 'none';
|
||
pswp.mainScroll.itemHolders[2].el.style.display = 'none';
|
||
|
||
if (this._croppedZoom) {
|
||
if (pswp.mainScroll.x !== 0) {
|
||
// shift the main scroller to zero position
|
||
pswp.mainScroll.resetPosition();
|
||
pswp.mainScroll.resize();
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
_start() {
|
||
if (this.isOpening
|
||
&& this._useAnimation
|
||
&& this._placeholder
|
||
&& this._placeholder.tagName === 'IMG') {
|
||
// To ensure smooth animation
|
||
// we wait till the current slide image placeholder is decoded,
|
||
// but no longer than 250ms,
|
||
// and no shorter than 50ms
|
||
// (just using requestanimationframe is not enough in Firefox,
|
||
// for some reason)
|
||
new Promise((resolve) => {
|
||
let decoded = false;
|
||
let isDelaying = true;
|
||
decodeImage(/** @type {HTMLImageElement} */ (this._placeholder)).finally(() => {
|
||
decoded = true;
|
||
if (!isDelaying) {
|
||
resolve();
|
||
}
|
||
});
|
||
setTimeout(() => {
|
||
isDelaying = false;
|
||
if (decoded) {
|
||
resolve();
|
||
}
|
||
}, 50);
|
||
setTimeout(resolve, 250);
|
||
}).finally(() => this._initiate());
|
||
} else {
|
||
this._initiate();
|
||
}
|
||
}
|
||
|
||
_initiate() {
|
||
this.pswp.element.style.setProperty('--pswp-transition-duration', this._duration + 'ms');
|
||
|
||
this.pswp.dispatch(
|
||
this.isOpening ? 'openingAnimationStart' : 'closingAnimationStart'
|
||
);
|
||
|
||
// legacy event
|
||
this.pswp.dispatch(
|
||
/** @type {'initialZoomIn' | 'initialZoomOut'} */
|
||
('initialZoom' + (this.isOpening ? 'In' : 'Out'))
|
||
);
|
||
|
||
this.pswp.element.classList[this.isOpening ? 'add' : 'remove']('pswp--ui-visible');
|
||
|
||
if (this.isOpening) {
|
||
if (this._placeholder) {
|
||
// unhide the placeholder
|
||
this._placeholder.style.opacity = '1';
|
||
}
|
||
this._animateToOpenState();
|
||
} else if (this.isClosing) {
|
||
this._animateToClosedState();
|
||
}
|
||
|
||
if (!this._useAnimation) {
|
||
this._onAnimationComplete();
|
||
}
|
||
}
|
||
|
||
_onAnimationComplete() {
|
||
const { pswp } = this;
|
||
this.isOpen = this.isOpening;
|
||
this.isClosed = this.isClosing;
|
||
this.isOpening = false;
|
||
this.isClosing = false;
|
||
|
||
pswp.dispatch(
|
||
this.isOpen ? 'openingAnimationEnd' : 'closingAnimationEnd'
|
||
);
|
||
|
||
// legacy event
|
||
pswp.dispatch(
|
||
/** @type {'initialZoomInEnd' | 'initialZoomOutEnd'} */
|
||
('initialZoom' + (this.isOpen ? 'InEnd' : 'OutEnd'))
|
||
);
|
||
|
||
if (this.isClosed) {
|
||
pswp.destroy();
|
||
} else if (this.isOpen) {
|
||
if (this._animateZoom) {
|
||
pswp.container.style.overflow = 'visible';
|
||
pswp.container.style.width = '100%';
|
||
}
|
||
pswp.currSlide.applyCurrentZoomPan();
|
||
}
|
||
}
|
||
|
||
_animateToOpenState() {
|
||
const { pswp } = this;
|
||
if (this._animateZoom) {
|
||
if (this._croppedZoom) {
|
||
this._animateTo(this._cropContainer1, 'transform', 'translate3d(0,0,0)');
|
||
this._animateTo(this._cropContainer2, 'transform', 'none');
|
||
}
|
||
|
||
pswp.currSlide.zoomAndPanToInitial();
|
||
this._animateTo(
|
||
pswp.currSlide.container,
|
||
'transform',
|
||
pswp.currSlide.getCurrentTransform()
|
||
);
|
||
}
|
||
|
||
if (this._animateBgOpacity) {
|
||
this._animateTo(pswp.bg, 'opacity', String(pswp.options.bgOpacity));
|
||
}
|
||
|
||
if (this._animateRootOpacity) {
|
||
this._animateTo(pswp.element, 'opacity', '1');
|
||
}
|
||
}
|
||
|
||
_animateToClosedState() {
|
||
const { pswp } = this;
|
||
|
||
if (this._animateZoom) {
|
||
this._setClosedStateZoomPan(true);
|
||
}
|
||
|
||
if (this._animateBgOpacity
|
||
&& pswp.bgOpacity > 0.01) { // do not animate opacity if it's already at 0
|
||
this._animateTo(pswp.bg, 'opacity', '0');
|
||
}
|
||
|
||
if (this._animateRootOpacity) {
|
||
this._animateTo(pswp.element, 'opacity', '0');
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {boolean=} animate
|
||
*/
|
||
_setClosedStateZoomPan(animate) {
|
||
if (!this._thumbBounds) return;
|
||
|
||
const { pswp } = this;
|
||
const { innerRect } = this._thumbBounds;
|
||
const { currSlide, viewportSize } = pswp;
|
||
|
||
if (this._croppedZoom) {
|
||
const containerOnePanX = -viewportSize.x + (this._thumbBounds.x - innerRect.x) + innerRect.w;
|
||
const containerOnePanY = -viewportSize.y + (this._thumbBounds.y - innerRect.y) + innerRect.h;
|
||
const containerTwoPanX = viewportSize.x - innerRect.w;
|
||
const containerTwoPanY = viewportSize.y - innerRect.h;
|
||
|
||
|
||
if (animate) {
|
||
this._animateTo(
|
||
this._cropContainer1,
|
||
'transform',
|
||
toTransformString(containerOnePanX, containerOnePanY)
|
||
);
|
||
|
||
this._animateTo(
|
||
this._cropContainer2,
|
||
'transform',
|
||
toTransformString(containerTwoPanX, containerTwoPanY)
|
||
);
|
||
} else {
|
||
setTransform(this._cropContainer1, containerOnePanX, containerOnePanY);
|
||
setTransform(this._cropContainer2, containerTwoPanX, containerTwoPanY);
|
||
}
|
||
}
|
||
|
||
equalizePoints(currSlide.pan, innerRect || this._thumbBounds);
|
||
currSlide.currZoomLevel = this._thumbBounds.w / currSlide.width;
|
||
|
||
if (animate) {
|
||
this._animateTo(currSlide.container, 'transform', currSlide.getCurrentTransform());
|
||
} else {
|
||
currSlide.applyCurrentZoomPan();
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param {HTMLElement} target
|
||
* @param {'transform' | 'opacity'} prop
|
||
* @param {string} propValue
|
||
*/
|
||
_animateTo(target, prop, propValue) {
|
||
if (!this._duration) {
|
||
target.style[prop] = propValue;
|
||
return;
|
||
}
|
||
|
||
const { animations } = this.pswp;
|
||
/** @type {AnimationProps} */
|
||
const animProps = {
|
||
duration: this._duration,
|
||
easing: this.pswp.options.easing,
|
||
onComplete: () => {
|
||
if (!animations.activeAnimations.length) {
|
||
this._onAnimationComplete();
|
||
}
|
||
},
|
||
target,
|
||
};
|
||
animProps[prop] = propValue;
|
||
animations.startTransition(animProps);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @template T
|
||
* @typedef {import('./types.js').Type<T>} Type<T>
|
||
*/
|
||
|
||
/** @typedef {import('./slide/slide.js').SlideData} SlideData */
|
||
/** @typedef {import('./slide/zoom-level.js').ZoomLevelOption} ZoomLevelOption */
|
||
/** @typedef {import('./ui/ui-element.js').UIElementData} UIElementData */
|
||
/** @typedef {import('./main-scroll.js').ItemHolder} ItemHolder */
|
||
/** @typedef {import('./core/eventable.js').PhotoSwipeEventsMap} PhotoSwipeEventsMap */
|
||
/** @typedef {import('./core/eventable.js').PhotoSwipeFiltersMap} PhotoSwipeFiltersMap */
|
||
/**
|
||
* @template T
|
||
* @typedef {import('./core/eventable.js').EventCallback<T>} EventCallback<T>
|
||
*/
|
||
/**
|
||
* @template T
|
||
* @typedef {import('./core/eventable.js').AugmentedEvent<T>} AugmentedEvent<T>
|
||
*/
|
||
|
||
/** @typedef {{ x?: number; y?: number; id?: string | number }} Point */
|
||
/** @typedef {{ x?: number; y?: number }} Size */
|
||
/** @typedef {{ top: number; bottom: number; left: number; right: number }} Padding */
|
||
/** @typedef {SlideData[]} DataSourceArray */
|
||
/** @typedef {{ gallery: HTMLElement; items?: HTMLElement[] }} DataSourceObject */
|
||
/** @typedef {DataSourceArray | DataSourceObject} DataSource */
|
||
/** @typedef {(point: Point, originalEvent: PointerEvent) => void} ActionFn */
|
||
/** @typedef {'close' | 'next' | 'zoom' | 'zoom-or-close' | 'toggle-controls'} ActionType */
|
||
/** @typedef {Type<PhotoSwipe> | { default: Type<PhotoSwipe> }} PhotoSwipeModule */
|
||
/** @typedef {PhotoSwipeModule | Promise<PhotoSwipeModule> | (() => Promise<PhotoSwipeModule>)} PhotoSwipeModuleOption */
|
||
|
||
/**
|
||
* @typedef {Object} PhotoSwipeOptions https://photoswipe.com/options/
|
||
*
|
||
* @prop {DataSource=} dataSource
|
||
* Pass an array of any items via dataSource option. Its length will determine amount of slides
|
||
* (which may be modified further from numItems event).
|
||
*
|
||
* Each item should contain data that you need to generate slide
|
||
* (for image slide it would be src (image URL), width (image width), height, srcset, alt).
|
||
*
|
||
* If these properties are not present in your initial array, you may "pre-parse" each item from itemData filter.
|
||
*
|
||
* @prop {number=} bgOpacity
|
||
* Background backdrop opacity, always define it via this option and not via CSS rgba color.
|
||
*
|
||
* @prop {number=} spacing
|
||
* Spacing between slides. Defined as ratio relative to the viewport width (0.1 = 10% of viewport).
|
||
*
|
||
* @prop {boolean=} allowPanToNext
|
||
* Allow swipe navigation to the next slide when the current slide is zoomed. Does not apply to mouse events.
|
||
*
|
||
* @prop {boolean=} loop
|
||
* If set to true you'll be able to swipe from the last to the first image.
|
||
* Option is always false when there are less than 3 slides.
|
||
*
|
||
* @prop {boolean=} wheelToZoom
|
||
* By default PhotoSwipe zooms image with ctrl-wheel, if you enable this option - image will zoom just via wheel.
|
||
*
|
||
* @prop {boolean=} pinchToClose
|
||
* Pinch touch gesture to close the gallery.
|
||
*
|
||
* @prop {boolean=} closeOnVerticalDrag
|
||
* Vertical drag gesture to close the PhotoSwipe.
|
||
*
|
||
* @prop {Padding=} padding
|
||
* Slide area padding (in pixels).
|
||
*
|
||
* @prop {(viewportSize: Size, itemData: SlideData, index: number) => Padding} [paddingFn]
|
||
* The option is checked frequently, so make sure it's performant. Overrides padding option if defined. For example:
|
||
*
|
||
* @prop {number | false} [hideAnimationDuration]
|
||
* Transition duration in milliseconds, can be 0.
|
||
*
|
||
* @prop {number | false} [showAnimationDuration]
|
||
* Transition duration in milliseconds, can be 0.
|
||
*
|
||
* @prop {number | false} [zoomAnimationDuration]
|
||
* Transition duration in milliseconds, can be 0.
|
||
*
|
||
* @prop {string=} easing
|
||
* String, 'cubic-bezier(.4,0,.22,1)'. CSS easing function for open/close/zoom transitions.
|
||
*
|
||
* @prop {boolean=} escKey
|
||
* Esc key to close.
|
||
*
|
||
* @prop {boolean=} arrowKeys
|
||
* Left/right arrow keys for navigation.
|
||
*
|
||
* @prop {boolean=} returnFocus
|
||
* Restore focus the last active element after PhotoSwipe is closed.
|
||
*
|
||
* @prop {boolean=} clickToCloseNonZoomable
|
||
* If image is not zoomable (for example, smaller than viewport) it can be closed by clicking on it.
|
||
*
|
||
* @prop {ActionType | ActionFn | false} [imageClickAction]
|
||
* Refer to click and tap actions page.
|
||
*
|
||
* @prop {ActionType | ActionFn | false} [bgClickAction]
|
||
* Refer to click and tap actions page.
|
||
*
|
||
* @prop {ActionType | ActionFn | false} [tapAction]
|
||
* Refer to click and tap actions page.
|
||
*
|
||
* @prop {ActionType | ActionFn | false} [doubleTapAction]
|
||
* Refer to click and tap actions page.
|
||
*
|
||
* @prop {number=} preloaderDelay
|
||
* Delay before the loading indicator will be displayed,
|
||
* if image is loaded during it - the indicator will not be displayed at all. Can be zero.
|
||
*
|
||
* @prop {string=} indexIndicatorSep
|
||
* Used for slide count indicator ("1 of 10 ").
|
||
*
|
||
* @prop {(options: PhotoSwipeOptions, pswp: PhotoSwipe) => { x: number; y: number }} [getViewportSizeFn]
|
||
* A function that should return slide viewport width and height, in format {x: 100, y: 100}.
|
||
*
|
||
* @prop {string=} errorMsg
|
||
* Message to display when the image wasn't able to load. If you need to display HTML - use contentErrorElement filter.
|
||
*
|
||
* @prop {[number, number]=} preload
|
||
* Lazy loading of nearby slides based on direction of movement. Should be an array with two integers,
|
||
* first one - number of items to preload before the current image, second one - after the current image.
|
||
* Two nearby images are always loaded.
|
||
*
|
||
* @prop {string=} mainClass
|
||
* Class that will be added to the root element of PhotoSwipe, may contain multiple separated by space.
|
||
* Example on Styling page.
|
||
*
|
||
* @prop {HTMLElement=} appendToEl
|
||
* Element to which PhotoSwipe dialog will be appended when it opens.
|
||
*
|
||
* @prop {number=} maxWidthToAnimate
|
||
* Maximum width of image to animate, if initial rendered image width
|
||
* is larger than this value - the opening/closing transition will be automatically disabled.
|
||
*
|
||
* @prop {string=} closeTitle
|
||
* Translating
|
||
*
|
||
* @prop {string=} zoomTitle
|
||
* Translating
|
||
*
|
||
* @prop {string=} arrowPrevTitle
|
||
* Translating
|
||
*
|
||
* @prop {string=} arrowNextTitle
|
||
* Translating
|
||
*
|
||
* @prop {'zoom' | 'fade' | 'none'} [showHideAnimationType]
|
||
* To adjust opening or closing transition type use lightbox option `showHideAnimationType` (`String`).
|
||
* It supports three values - `zoom` (default), `fade` (default if there is no thumbnail) and `none`.
|
||
*
|
||
* Animations are automatically disabled if user `(prefers-reduced-motion: reduce)`.
|
||
*
|
||
* @prop {number=} index
|
||
* Defines start slide index.
|
||
*
|
||
* @prop {(e: MouseEvent) => number} [getClickedIndexFn]
|
||
*
|
||
* @prop {boolean=} arrowPrev
|
||
* @prop {boolean=} arrowNext
|
||
* @prop {boolean=} zoom
|
||
* @prop {boolean=} close
|
||
* @prop {boolean=} counter
|
||
*
|
||
* @prop {string=} arrowPrevSVG
|
||
* @prop {string=} arrowNextSVG
|
||
* @prop {string=} zoomSVG
|
||
* @prop {string=} closeSVG
|
||
* @prop {string=} counterSVG
|
||
*
|
||
* @prop {string=} arrowPrevTitle
|
||
* @prop {string=} arrowNextTitle
|
||
* @prop {string=} zoomTitle
|
||
* @prop {string=} closeTitle
|
||
* @prop {string=} counterTitle
|
||
*
|
||
* @prop {ZoomLevelOption=} initialZoomLevel
|
||
* @prop {ZoomLevelOption=} secondaryZoomLevel
|
||
* @prop {ZoomLevelOption=} maxZoomLevel
|
||
*
|
||
* @prop {boolean=} mouseMovePan
|
||
* @prop {Point | null} [initialPointerPos]
|
||
* @prop {boolean=} showHideOpacity
|
||
*
|
||
* @prop {PhotoSwipeModuleOption} [pswpModule]
|
||
* @prop {() => Promise<any>} [openPromise]
|
||
* @prop {boolean=} preloadFirstSlide
|
||
* @prop {string=} gallery
|
||
* @prop {string=} gallerySelector
|
||
* @prop {string=} children
|
||
* @prop {string=} childSelector
|
||
* @prop {string | false} [thumbSelector]
|
||
*/
|
||
|
||
/** @type {PhotoSwipeOptions} */
|
||
const defaultOptions = {
|
||
allowPanToNext: true,
|
||
spacing: 0.1,
|
||
loop: true,
|
||
pinchToClose: true,
|
||
closeOnVerticalDrag: true,
|
||
hideAnimationDuration: 333,
|
||
showAnimationDuration: 333,
|
||
zoomAnimationDuration: 333,
|
||
escKey: true,
|
||
arrowKeys: true,
|
||
returnFocus: true,
|
||
maxWidthToAnimate: 4000,
|
||
clickToCloseNonZoomable: true,
|
||
imageClickAction: 'zoom-or-close',
|
||
bgClickAction: 'close',
|
||
tapAction: 'toggle-controls',
|
||
doubleTapAction: 'zoom',
|
||
indexIndicatorSep: ' / ',
|
||
preloaderDelay: 2000,
|
||
bgOpacity: 0.8,
|
||
|
||
index: 0,
|
||
errorMsg: 'The image cannot be loaded',
|
||
preload: [1, 2],
|
||
easing: 'cubic-bezier(.4,0,.22,1)'
|
||
};
|
||
|
||
/**
|
||
* PhotoSwipe Core
|
||
*/
|
||
class PhotoSwipe extends PhotoSwipeBase {
|
||
/**
|
||
* @param {PhotoSwipeOptions} options
|
||
*/
|
||
constructor(options) {
|
||
super();
|
||
|
||
this._prepareOptions(options);
|
||
|
||
/**
|
||
* offset of viewport relative to document
|
||
*
|
||
* @type {{ x?: number; y?: number }}
|
||
*/
|
||
this.offset = {};
|
||
|
||
/**
|
||
* @type {{ x?: number; y?: number }}
|
||
* @private
|
||
*/
|
||
this._prevViewportSize = {};
|
||
|
||
/**
|
||
* Size of scrollable PhotoSwipe viewport
|
||
*
|
||
* @type {{ x?: number; y?: number }}
|
||
*/
|
||
this.viewportSize = {};
|
||
|
||
/**
|
||
* background (backdrop) opacity
|
||
*
|
||
* @type {number}
|
||
*/
|
||
this.bgOpacity = 1;
|
||
|
||
/** @type {HTMLDivElement} */
|
||
this.topBar = undefined;
|
||
|
||
this.events = new DOMEvents();
|
||
|
||
/** @type {Animations} */
|
||
this.animations = new Animations();
|
||
|
||
this.mainScroll = new MainScroll(this);
|
||
this.gestures = new Gestures(this);
|
||
this.opener = new Opener(this);
|
||
this.keyboard = new Keyboard(this);
|
||
this.contentLoader = new ContentLoader(this);
|
||
}
|
||
|
||
init() {
|
||
if (this.isOpen || this.isDestroying) {
|
||
return;
|
||
}
|
||
|
||
this.isOpen = true;
|
||
this.dispatch('init'); // legacy
|
||
this.dispatch('beforeOpen');
|
||
|
||
this._createMainStructure();
|
||
|
||
// add classes to the root element of PhotoSwipe
|
||
let rootClasses = 'pswp--open';
|
||
if (this.gestures.supportsTouch) {
|
||
rootClasses += ' pswp--touch';
|
||
}
|
||
if (this.options.mainClass) {
|
||
rootClasses += ' ' + this.options.mainClass;
|
||
}
|
||
this.element.className += ' ' + rootClasses;
|
||
|
||
this.currIndex = this.options.index || 0;
|
||
this.potentialIndex = this.currIndex;
|
||
this.dispatch('firstUpdate'); // starting index can be modified here
|
||
|
||
// initialize scroll wheel handler to block the scroll
|
||
this.scrollWheel = new ScrollWheel(this);
|
||
|
||
// sanitize index
|
||
if (Number.isNaN(this.currIndex)
|
||
|| this.currIndex < 0
|
||
|| this.currIndex >= this.getNumItems()) {
|
||
this.currIndex = 0;
|
||
}
|
||
|
||
if (!this.gestures.supportsTouch) {
|
||
// enable mouse features if no touch support detected
|
||
this.mouseDetected();
|
||
}
|
||
|
||
// causes forced synchronous layout
|
||
this.updateSize();
|
||
|
||
this.offset.y = window.pageYOffset;
|
||
|
||
this._initialItemData = this.getItemData(this.currIndex);
|
||
this.dispatch('gettingData', {
|
||
index: this.currIndex,
|
||
data: this._initialItemData,
|
||
slide: undefined
|
||
});
|
||
|
||
// *Layout* - calculate size and position of elements here
|
||
this._initialThumbBounds = this.getThumbBounds();
|
||
this.dispatch('initialLayout');
|
||
|
||
this.on('openingAnimationEnd', () => {
|
||
this.mainScroll.itemHolders[0].el.style.display = 'block';
|
||
this.mainScroll.itemHolders[2].el.style.display = 'block';
|
||
|
||
// Add content to the previous and next slide
|
||
this.setContent(this.mainScroll.itemHolders[0], this.currIndex - 1);
|
||
this.setContent(this.mainScroll.itemHolders[2], this.currIndex + 1);
|
||
|
||
this.appendHeavy();
|
||
|
||
this.contentLoader.updateLazy();
|
||
|
||
this.events.add(window, 'resize', this._handlePageResize.bind(this));
|
||
this.events.add(window, 'scroll', this._updatePageScrollOffset.bind(this));
|
||
this.dispatch('bindEvents');
|
||
});
|
||
|
||
// set content for center slide (first time)
|
||
this.setContent(this.mainScroll.itemHolders[1], this.currIndex);
|
||
this.dispatch('change');
|
||
|
||
this.opener.open();
|
||
|
||
this.dispatch('afterInit');
|
||
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* Get looped slide index
|
||
* (for example, -1 will return the last slide)
|
||
*
|
||
* @param {number} index
|
||
*/
|
||
getLoopedIndex(index) {
|
||
const numSlides = this.getNumItems();
|
||
|
||
if (this.options.loop) {
|
||
if (index > numSlides - 1) {
|
||
index -= numSlides;
|
||
}
|
||
|
||
if (index < 0) {
|
||
index += numSlides;
|
||
}
|
||
}
|
||
|
||
index = clamp(index, 0, numSlides - 1);
|
||
|
||
return index;
|
||
}
|
||
|
||
appendHeavy() {
|
||
this.mainScroll.itemHolders.forEach((itemHolder) => {
|
||
if (itemHolder.slide) {
|
||
itemHolder.slide.appendHeavy();
|
||
}
|
||
});
|
||
}
|
||
|
||
/**
|
||
* Change the slide
|
||
* @param {number} index New index
|
||
*/
|
||
goTo(index) {
|
||
this.mainScroll.moveIndexBy(
|
||
this.getLoopedIndex(index) - this.potentialIndex
|
||
);
|
||
}
|
||
|
||
/**
|
||
* Go to the next slide.
|
||
*/
|
||
next() {
|
||
this.goTo(this.potentialIndex + 1);
|
||
}
|
||
|
||
/**
|
||
* Go to the previous slide.
|
||
*/
|
||
prev() {
|
||
this.goTo(this.potentialIndex - 1);
|
||
}
|
||
|
||
/**
|
||
* @see slide/slide.js zoomTo
|
||
*
|
||
* @param {Parameters<Slide['zoomTo']>} args
|
||
*/
|
||
zoomTo(...args) {
|
||
this.currSlide.zoomTo(...args);
|
||
}
|
||
|
||
/**
|
||
* @see slide/slide.js toggleZoom
|
||
*/
|
||
toggleZoom() {
|
||
this.currSlide.toggleZoom();
|
||
}
|
||
|
||
/**
|
||
* Close the gallery.
|
||
* After closing transition ends - destroy it
|
||
*/
|
||
close() {
|
||
if (!this.opener.isOpen || this.isDestroying) {
|
||
return;
|
||
}
|
||
|
||
this.isDestroying = true;
|
||
|
||
this.dispatch('close');
|
||
|
||
this.events.removeAll();
|
||
this.opener.close();
|
||
}
|
||
|
||
/**
|
||
* Destroys the gallery:
|
||
* - instantly closes the gallery
|
||
* - unbinds events,
|
||
* - cleans intervals and timeouts
|
||
* - removes elements from DOM
|
||
*/
|
||
destroy() {
|
||
if (!this.isDestroying) {
|
||
this.options.showHideAnimationType = 'none';
|
||
this.close();
|
||
return;
|
||
}
|
||
|
||
this.dispatch('destroy');
|
||
|
||
this.listeners = null;
|
||
|
||
this.scrollWrap.ontouchmove = null;
|
||
this.scrollWrap.ontouchend = null;
|
||
|
||
this.element.remove();
|
||
|
||
this.mainScroll.itemHolders.forEach((itemHolder) => {
|
||
if (itemHolder.slide) {
|
||
itemHolder.slide.destroy();
|
||
}
|
||
});
|
||
|
||
this.contentLoader.destroy();
|
||
this.events.removeAll();
|
||
}
|
||
|
||
/**
|
||
* Refresh/reload content of a slide by its index
|
||
*
|
||
* @param {number} slideIndex
|
||
*/
|
||
refreshSlideContent(slideIndex) {
|
||
this.contentLoader.removeByIndex(slideIndex);
|
||
this.mainScroll.itemHolders.forEach((itemHolder, i) => {
|
||
let potentialHolderIndex = this.currSlide.index - 1 + i;
|
||
if (this.canLoop()) {
|
||
potentialHolderIndex = this.getLoopedIndex(potentialHolderIndex);
|
||
}
|
||
if (potentialHolderIndex === slideIndex) {
|
||
// set the new slide content
|
||
this.setContent(itemHolder, slideIndex, true);
|
||
|
||
// activate the new slide if it's current
|
||
if (i === 1) {
|
||
/** @type {Slide} */
|
||
this.currSlide = itemHolder.slide;
|
||
itemHolder.slide.setIsActive(true);
|
||
}
|
||
}
|
||
});
|
||
|
||
this.dispatch('change');
|
||
}
|
||
|
||
|
||
/**
|
||
* Set slide content
|
||
*
|
||
* @param {ItemHolder} holder mainScroll.itemHolders array item
|
||
* @param {number} index Slide index
|
||
* @param {boolean=} force If content should be set even if index wasn't changed
|
||
*/
|
||
setContent(holder, index, force) {
|
||
if (this.canLoop()) {
|
||
index = this.getLoopedIndex(index);
|
||
}
|
||
|
||
if (holder.slide) {
|
||
if (holder.slide.index === index && !force) {
|
||
// exit if holder already contains this slide
|
||
// this could be common when just three slides are used
|
||
return;
|
||
}
|
||
|
||
// destroy previous slide
|
||
holder.slide.destroy();
|
||
holder.slide = null;
|
||
}
|
||
|
||
// exit if no loop and index is out of bounds
|
||
if (!this.canLoop() && (index < 0 || index >= this.getNumItems())) {
|
||
return;
|
||
}
|
||
|
||
const itemData = this.getItemData(index);
|
||
holder.slide = new Slide(itemData, index, this);
|
||
|
||
// set current slide
|
||
if (index === this.currIndex) {
|
||
this.currSlide = holder.slide;
|
||
}
|
||
|
||
holder.slide.append(holder.el);
|
||
}
|
||
|
||
getViewportCenterPoint() {
|
||
return {
|
||
x: this.viewportSize.x / 2,
|
||
y: this.viewportSize.y / 2
|
||
};
|
||
}
|
||
|
||
/**
|
||
* Update size of all elements.
|
||
* Executed on init and on page resize.
|
||
*
|
||
* @param {boolean=} force Update size even if size of viewport was not changed.
|
||
*/
|
||
updateSize(force) {
|
||
// let item;
|
||
// let itemIndex;
|
||
|
||
if (this.isDestroying) {
|
||
// exit if PhotoSwipe is closed or closing
|
||
// (to avoid errors, as resize event might be delayed)
|
||
return;
|
||
}
|
||
|
||
//const newWidth = this.scrollWrap.clientWidth;
|
||
//const newHeight = this.scrollWrap.clientHeight;
|
||
|
||
const newViewportSize = getViewportSize(this.options, this);
|
||
|
||
if (!force && pointsEqual(newViewportSize, this._prevViewportSize)) {
|
||
// Exit if dimensions were not changed
|
||
return;
|
||
}
|
||
|
||
//this._prevViewportSize.x = newWidth;
|
||
//this._prevViewportSize.y = newHeight;
|
||
equalizePoints(this._prevViewportSize, newViewportSize);
|
||
|
||
this.dispatch('beforeResize');
|
||
|
||
equalizePoints(this.viewportSize, this._prevViewportSize);
|
||
|
||
this._updatePageScrollOffset();
|
||
|
||
this.dispatch('viewportSize');
|
||
|
||
// Resize slides only after opener animation is finished
|
||
// and don't re-calculate size on inital size update
|
||
this.mainScroll.resize(this.opener.isOpen);
|
||
|
||
if (!this.hasMouse && window.matchMedia('(any-hover: hover)').matches) {
|
||
this.mouseDetected();
|
||
}
|
||
|
||
this.dispatch('resize');
|
||
}
|
||
|
||
/**
|
||
* @param {number} opacity
|
||
*/
|
||
applyBgOpacity(opacity) {
|
||
this.bgOpacity = Math.max(opacity, 0);
|
||
this.bg.style.opacity = String(this.bgOpacity * this.options.bgOpacity);
|
||
}
|
||
|
||
/**
|
||
* Whether mouse is detected
|
||
*/
|
||
mouseDetected() {
|
||
if (!this.hasMouse) {
|
||
this.hasMouse = true;
|
||
this.element.classList.add('pswp--has_mouse');
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Page resize event handler
|
||
*
|
||
* @private
|
||
*/
|
||
_handlePageResize() {
|
||
this.updateSize();
|
||
|
||
// In iOS webview, if element size depends on document size,
|
||
// it'll be measured incorrectly in resize event
|
||
//
|
||
// https://bugs.webkit.org/show_bug.cgi?id=170595
|
||
// https://hackernoon.com/onresize-event-broken-in-mobile-safari-d8469027bf4d
|
||
if (/iPhone|iPad|iPod/i.test(window.navigator.userAgent)) {
|
||
setTimeout(() => {
|
||
this.updateSize();
|
||
}, 500);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Page scroll offset is used
|
||
* to get correct coordinates
|
||
* relative to PhotoSwipe viewport.
|
||
*
|
||
* @private
|
||
*/
|
||
_updatePageScrollOffset() {
|
||
this.setScrollOffset(0, window.pageYOffset);
|
||
}
|
||
|
||
/**
|
||
* @param {number} x
|
||
* @param {number} y
|
||
*/
|
||
setScrollOffset(x, y) {
|
||
this.offset.x = x;
|
||
this.offset.y = y;
|
||
this.dispatch('updateScrollOffset');
|
||
}
|
||
|
||
/**
|
||
* Create main HTML structure of PhotoSwipe,
|
||
* and add it to DOM
|
||
*
|
||
* @private
|
||
*/
|
||
_createMainStructure() {
|
||
// root DOM element of PhotoSwipe (.pswp)
|
||
this.element = createElement('pswp');
|
||
this.element.setAttribute('tabindex', '-1');
|
||
this.element.setAttribute('role', 'dialog');
|
||
|
||
// template is legacy prop
|
||
this.template = this.element;
|
||
|
||
// Background is added as a separate element,
|
||
// as animating opacity is faster than animating rgba()
|
||
this.bg = createElement('pswp__bg', false, this.element);
|
||
this.scrollWrap = createElement('pswp__scroll-wrap', false, this.element);
|
||
this.container = createElement('pswp__container', false, this.scrollWrap);
|
||
|
||
this.mainScroll.appendHolders();
|
||
|
||
this.ui = new UI(this);
|
||
this.ui.init();
|
||
|
||
// append to DOM
|
||
(this.options.appendToEl || document.body).appendChild(this.element);
|
||
}
|
||
|
||
|
||
/**
|
||
* Get position and dimensions of small thumbnail
|
||
* {x:,y:,w:}
|
||
*
|
||
* Height is optional (calculated based on the large image)
|
||
*/
|
||
getThumbBounds() {
|
||
return getThumbBounds(
|
||
this.currIndex,
|
||
this.currSlide ? this.currSlide.data : this._initialItemData,
|
||
this
|
||
);
|
||
}
|
||
|
||
/**
|
||
* If the PhotoSwipe can have continious loop
|
||
* @returns Boolean
|
||
*/
|
||
canLoop() {
|
||
return (this.options.loop && this.getNumItems() > 2);
|
||
}
|
||
|
||
/**
|
||
* @param {PhotoSwipeOptions} options
|
||
* @private
|
||
*/
|
||
_prepareOptions(options) {
|
||
if (window.matchMedia('(prefers-reduced-motion), (update: slow)').matches) {
|
||
options.showHideAnimationType = 'none';
|
||
options.zoomAnimationDuration = 0;
|
||
}
|
||
|
||
/** @type {PhotoSwipeOptions}*/
|
||
this.options = {
|
||
...defaultOptions,
|
||
...options
|
||
};
|
||
}
|
||
}
|
||
|
||
export { PhotoSwipe as default };
|
||
//# sourceMappingURL=photoswipe.esm.js.map
|