80 lines
2.5 KiB
JavaScript
80 lines
2.5 KiB
JavaScript
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/*
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Put this file in /static/js/load-photoswipe.js
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Documentation and licence at https://github.com/liwenyip/hugo-easy-gallery/
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*/
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/* Show an alert if this js file has been loaded twice */
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if (window.loadphotoswipejs) {
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window.alert("You've loaded load-photoswipe.js twice. See https://github.com/liwenyip/hugo-easy-gallery/issues/6")
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}
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var loadphotoswipejs = 1
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/* TODO: Make the share function work */
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$( document ).ready(function() {
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/*
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Initialise Photoswipe
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*/
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var items = []; // array of slide objects that will be passed to PhotoSwipe()
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// for every figure element on the page:
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$('figure').each( function() {
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if ($(this).attr('class') == 'no-photoswipe') return true; // ignore any figures where class="no-photoswipe"
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// get properties from child a/img/figcaption elements,
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var $figure = $(this),
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$a = $figure.find('a'),
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$img = $figure.find('img'),
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$src = $a.attr('href'),
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$title = $img.attr('alt'),
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$msrc = $img.attr('src');
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// if data-size on <a> tag is set, read it and create an item
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if ($a.data('size')) {
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var $size = $a.data('size').split('x');
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var item = {
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src : $src,
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w : $size[0],
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h : $size[1],
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title : $title,
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msrc : $msrc
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};
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console.log("Using pre-defined dimensions for " + $src);
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// if not, set temp default size then load the image to check actual size
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} else {
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var item = {
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src : $src,
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w : 800, // temp default size
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h : 600, // temp default size
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title : $title,
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msrc : $msrc
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};
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console.log("Using default dimensions for " + $src);
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// load the image to check its dimensions
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// update the item as soon as w and h are known (check every 30ms)
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var img = new Image();
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img.src = $src;
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var wait = setInterval(function() {
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var w = img.naturalWidth,
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h = img.naturalHeight;
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if (w && h) {
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clearInterval(wait);
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item.w = w;
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item.h = h;
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console.log("Got actual dimensions for " + img.src);
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}
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}, 30);
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}
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// Save the index of this image then add it to the array
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var index = items.length;
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items.push(item);
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// Event handler for click on a figure
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$figure.on('click', function(event) {
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event.preventDefault(); // prevent the normal behaviour i.e. load the <a> hyperlink
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// Get the PSWP element and initialise it with the desired options
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var $pswp = $('.pswp')[0];
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var options = {
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index: index,
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bgOpacity: 0.8,
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showHideOpacity: true
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}
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new PhotoSwipe($pswp, PhotoSwipeUI_Default, items, options).init();
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});
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});
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});
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