利用PhotoSwipe插件实现图片预览

10 阅读作者：kang1919 来源：CSDN 2020-08-10

由于安卓项目涉及到h5页面嵌入，需要查看图片相册集，本来打算使用baguetteBox，但是它不太兼容手机，并且页面效果跟灵活性欠缺，后来在文档中看到PhotoSwipe，虽然开发者很懒，好多东西东西没有嵌入到插件中，但是使用效果还是不错的

官网地址 https://photoswipe.com/

首先根据他提供的git，我发现有好多没有用的文件，于是决定不使用composer，直接把有用的文件放入到项目中，可以选择压缩发布版dist，也可以选用src源码版，这里才用的是dist

首先引入css


<link rel="stylesheet prefetch" href="photoswipe/css/photoswipe.css">
<link rel="stylesheet prefetch" href="photoswipe/css/default-skin/default-skin.css">

js放到最后


<script src="photoswipe/js/photoswipe.js"></script>
<script src="photoswipe/js/photoswipe-ui-default.min.js"></script>

开发者很懒，需要引入它的PhotoSwipe元素到DOM中


<div class="pswp" tabindex="-1" role="dialog" aria-hidden="true">
    <div class="pswp__bg"></div>
    <div class="pswp__scroll-wrap">
        <div class="pswp__container">
            <div class="pswp__item"></div>
            <div class="pswp__item"></div>
            <div class="pswp__item"></div>
        </div>
        <div class="pswp__ui pswp__ui--hidden">
            <div class="pswp__top-bar">
                <div class="pswp__counter"></div>
                <button class="pswp__button pswp__button--close" title="Close (Esc)"></button>
                <!--<button class="pswp__button pswp__button&#45;&#45;share" title="Share"></button>-->
                <button class="pswp__button pswp__button--fs" title="Toggle fullscreen"></button>
                <button class="pswp__button pswp__button--zoom" title="Zoom in/out"></button>
                <div class="pswp__preloader">
                    <div class="pswp__preloader__icn">
                        <div class="pswp__preloader__cut">
                            <div class="pswp__preloader__donut"></div>
                        </div>
                    </div>
                </div>
            </div>
            <div class="pswp__share-modal pswp__share-modal--hidden pswp__single-tap">
                <div class="pswp__share-tooltip"></div>
            </div>
            <button class="pswp__button pswp__button--arrow--left" title="Previous (arrow left)">
            </button>
            <button class="pswp__button pswp__button--arrow--right" title="Next (arrow right)">
            </button>
            <div class="pswp__caption">
                <div class="pswp__caption__center"></div>
            </div>
        </div>
    </div>
</div>

完整的html代码


<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no">
    <meta name="apple-touch-fullscreen" content="yes"> <!--  一会试验下是否有必要存在 -->
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <meta name="format-detection" content="telephone=no">
    <meta http-equiv="x-rim-auto-match" content="none"/>
    <meta name="HandheldFriendly" content="true"/>
 
    <link rel="stylesheet" href="news_css/news_1.css">
    <link rel="stylesheet" href="news_css/news_2.css">
    <link rel="stylesheet prefetch" href="photoswipe/css/photoswipe.css">
    <link rel="stylesheet prefetch" href="photoswipe/css/default-skin/default-skin.css">
    <style>
        * {margin: 0;padding: 0;}
        .clearfix::before, .clearfix::after {
            display: block;
            content: '';
            visibility: hidden;
            height: 100%;
            clear: both;
        }
        body {padding-top: 2%;}
        .my-gallery {width:96%;margin: 0 auto;}
        .my-gallery .img-dv {width:100%;margin-bottom: 1%;}
        .my-gallery .img-dv a {display:block;width:100%;text-align: center}
        .my-gallery .img-dv a img {width:100%;}
    </style>
</head>
<body>
<div class="wrapper" style="color:#333333;font-size: 15px">
    <header class="con_hd infoBg">
        <a href="?app=app_order@detail&order_id={$order_id}"  class="hd-back"></a>
        <h2 class="hd-tit">{$data.name}</h2>
    </header>
 
    <div class="my-gallery" data-pswp-uid="1">
        {foreach $data['img_list'] $k=>$v}
        <figure>
            <div class="img-dv"><a href="{$v['value']}" data-size="1920x1080"><img src="{$v['value']}"></a></div>
            <figcaption style="display:none;">{$v['name']}</figcaption>
        </figure>
        {/foreach}
 
    </div>
 
    <div class="pswp" tabindex="-1" role="dialog" aria-hidden="true">
        <div class="pswp__bg"></div>
        <div class="pswp__scroll-wrap">
            <div class="pswp__container">
                <div class="pswp__item"></div>
                <div class="pswp__item"></div>
                <div class="pswp__item"></div>
            </div>
            <div class="pswp__ui pswp__ui--hidden">
                <div class="pswp__top-bar">
                    <div class="pswp__counter"></div>
                    <button class="pswp__button pswp__button--close" title="Close (Esc)"></button>
                    <!--<button class="pswp__button pswp__button&#45;&#45;share" title="Share"></button>-->
                    <button class="pswp__button pswp__button--fs" title="Toggle fullscreen"></button>
                    <button class="pswp__button pswp__button--zoom" title="Zoom in/out"></button>
                    <div class="pswp__preloader">
                        <div class="pswp__preloader__icn">
                            <div class="pswp__preloader__cut">
                                <div class="pswp__preloader__donut"></div>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="pswp__share-modal pswp__share-modal--hidden pswp__single-tap">
                    <div class="pswp__share-tooltip"></div>
                </div>
                <button class="pswp__button pswp__button--arrow--left" title="Previous (arrow left)">
                </button>
                <button class="pswp__button pswp__button--arrow--right" title="Next (arrow right)">
                </button>
                <div class="pswp__caption">
                    <div class="pswp__caption__center"></div>
                </div>
            </div>
        </div>
    </div>
</body>
<script src="photoswipe/js/photoswipe.js"></script>
<script src="photoswipe/js/photoswipe-ui-default.min.js"></script>
<script type="text/javascript">
    var initPhotoSwipeFromDOM = function(gallerySelector) {
        // 解析来自DOM元素幻灯片数据（URL，标题，大小...）
        var parseThumbnailElements = function(el) {
            var thumbElements = el.childNodes,
                numNodes = thumbElements.length,
                items = [],
                figureEl,
                linkEl,
                size,
                item,
                divEl;
            for(var i = 0; i < numNodes; i++) {
                figureEl = thumbElements[i]; // <figure> element
                // 仅包括元素节点
                if(figureEl.nodeType !== 1) {
                    continue;
                }
                divEl = figureEl.children[0];
                linkEl = divEl.children[0]; // <a> element
                size = linkEl.getAttribute('data-size').split('x');
                // 创建幻灯片对象
                item = {
                    src: linkEl.getAttribute('href'),
                    w: parseInt(size[0], 10),
                    h: parseInt(size[1], 10)
                };
                if(figureEl.children.length > 1) {
                    item.title = figureEl.children[1].innerHTML;
                }
                if(linkEl.children.length > 0) {
                    // <img> 缩略图节点, 检索缩略图网址
                    item.msrc = linkEl.children[0].getAttribute('src');
                }
                item.el = figureEl; // 保存链接元素 for getThumbBoundsFn
                items.push(item);
            }
            return items;
        };
 
        // 查找最近的父节点
        var closest = function closest(el, fn) {
            return el && ( fn(el) ? el : closest(el.parentNode, fn) );
        };
 
        // 当用户点击缩略图触发
        var onThumbnailsClick = function(e) {
            e = e || window.event;
            e.preventDefault ? e.preventDefault() : e.returnValue = false;
            var eTarget = e.target || e.srcElement;
            var clickedListItem = closest(eTarget, function(el) {
                return (el.tagName && el.tagName.toUpperCase() === 'FIGURE');

                            原文地址:https://blog.csdn.net/lunsunhuan1825/article/details/96474155