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Diffstat (limited to 'static/js/load-photoswipe.js')
| -rw-r--r-- | static/js/load-photoswipe.js | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/static/js/load-photoswipe.js b/static/js/load-photoswipe.js new file mode 100644 index 0000000..978c66d --- /dev/null +++ b/static/js/load-photoswipe.js @@ -0,0 +1,80 @@ +/* +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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