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