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alynefrancis/singe-galleries.php(with isotope and photoswipe)

Last active October 18, 2018 05:31
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singe-galleries.php(with isotope and photoswipe)
/*****
- This is a template used by 6 posts within a CPT
- Each post contains some text in the content editor and an ACF Gallery.
- Each image is tagged with category(ies) using Enhanced Media Library plugin.
- The categories used on each page are being echoed out to provide a means to filter the images.
- The lightbox being used is http://photoswipe.com
- The filter is done with http://isotope.com
- Included with the Isotope integration is https://github.com/desandro/imagesloaded
Thanks to @kevinwhoffman for helping with the gallery filter.
And to /susanlangenes for showing me how to access image sizes in the <figure>,
as well as providing the code for the photoswipe/isotope integration
*****/
<?php
/*
Template Name: (Single)Galleries Page
*/
?>
<?php get_header(); ?>
<?php if ( have_posts() ) while ( have_posts() ) : the_post(); ?>
<h1 class = "page-title"><?php the_title(); ?></h1>
<!--add introduction from the content editor on each post-->
<div class="gallery-intro">
<?php the_content(); ?>
</div> <!-- /gallery-intro -->
<!--output categories assigned to each photo via Enhanced Media Categories plugin. -->
<div class="gallery-filter">
<ul id="filters">
<li><a href="#" data-filter="*" class="active buttonlink">All</a></li>
<?php
$images = get_field('images');
$image_terms = array();
$all_used_terms = array();
foreach( $images as $image ) {
//loop over images and get which categories are being used
$image_terms = wp_get_post_terms($image['ID'], 'media_category', array('fields' => 'slugs'));
// get all categories and remove duplicates
$all_used_terms = array_unique( array_merge( $all_used_terms, $image_terms ) );
}
foreach ( $all_used_terms as $term ) {
//outputting slug so need to remove - and make first letter uppercase
//must be .$term with the dot preceeding
echo '<li><a href="#" class = "buttonlink" data-filter=".'.$term.'">' . ucwords(preg_replace('/-/', ' ', $term)) . '</a></li>';
}
?>
</ul>
</div><!-- /gallery-filter -->
<!--loop over all images available for post -->
<!--Images are part of an ACF Gallery - see documentation
http://www.advancedcustomfields.com/resources/gallery/-->
<div class="wrapper-gallery" itemscope itemtype="http://schema.org/ImageGallery">
<?php
$images = get_field('images');
if( $images ) : ?>
<?php foreach( $images as $image ) :
$terms = wp_get_object_terms($image['ID'], 'media_category');
?>
<!--echo out the tagged category as a class and data-category in the figure-->
<figure class="gallery-image image-item <?php if($terms) { foreach ($terms as $term) { echo $term->slug . ' ';}}?>"
data-catagory="<?php if($terms) { foreach ($terms as $term) { echo $term->slug . ' ';}} ?>" itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
<a href="<?php echo $image['url']; ?>" itemprop="contentUrl" data-size="<?php echo $image['width'] . 'x' . $image['height']; ?>">
<img class="" src="<?php echo $image['sizes']['large']; ?>" itemprop="thumbnail" alt="<?php echo $image['alt']; ?>" />
</a>
<figcaption itemprop="caption description"><?php echo $image['caption']; ?></figcaption>
</figure>
<?php endforeach; ?>
<?php endif; ?>
</div> <!-- gallery-wrapper -->
<?php endwhile; ?>
<?php next_post_link('%link', '<i class="fa fa-long-arrow-left"></i>'); ?>
<a href="<?php bloginfo('url'); ?>/?p=44"><i class="fa fa-th-large"></i></a>
<?php previous_post_link ('%link', '<i class="fa fa-long-arrow-right"></i>'); ?>
<!-- Photoswipe HTML. Requried for the overlay. -->
<!-- Root element of PhotoSwipe. Must have class pswp. -->
<div class="pswp" tabindex="-1" role="dialog" aria-hidden="true">
<!-- Background of PhotoSwipe.
It's a separate element, as animating opacity is faster than rgba(). -->
<div class="pswp__bg"></div>
<!-- Slides wrapper with overflow:hidden. -->
<div class="pswp__scroll-wrap">
<!-- Container that holds slides. PhotoSwipe keeps only 3 slides in DOM to save memory. -->
<!-- don't modify these 3 pswp__item elements, data is added later on. -->
<div class="pswp__container">
<div class="pswp__item"></div>
<div class="pswp__item"></div>
<div class="pswp__item"></div>
</div>
<!-- Default (PhotoSwipeUI_Default) interface on top of sliding area. Can be changed. -->
<div class="pswp__ui pswp__ui--hidden">
<div class="pswp__top-bar">
<!-- Controls are self-explanatory. Order can be changed. -->
<div class="pswp__counter"></div>
<button class="pswp__button pswp__button--close" title="Close (Esc)"></button>
<button class="pswp__button pswp__button--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>
<!-- Preloader demo http://codepen.io/dimsemenov/pen/yyBWoR -->
<!-- element will get class pswp__preloader--active when preloader is running -->
<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>
<!-- end of Photoswipe HTML -->
<?php get_footer(); ?>
<!-- script to set up isotope and photoswipe and init -->
this script courtesty of:
https://github.com/Iconoblast/radpress/blob/098a21be08bda5a42467556f9bb9cf9504d721d1/page-photoswipe-with-isotope.php
<script>
jQuery(document).ready(function($){
//ISOTOPE AND PHOTOSWIPE
var itemReveal = Isotope.Item.prototype.reveal;
Isotope.Item.prototype.reveal = function() {
itemReveal.apply( this, arguments );
$( this.element ).removeClass('isotope-hidden');
};
var itemHide = Isotope.Item.prototype.hide;
Isotope.Item.prototype.hide = function() {
itemHide.apply( this, arguments );
$( this.element ).addClass('isotope-hidden');
};
$('.isotope').isotope({
itemSelector: '.image-item',
masonry: {
columnWidth: '.gallery-image'
// isFitWidth: true
// gutter: 10
}, /* masonry */
hiddenStyle: {
opacity: 0
},
visibleStyle: {
opacity: 1
},
transitionDuration: '0.5s',
});
// filter functions
$('.navigate a').click(function(){
var selector = $(this).attr('data-filter');
// console.log('selector: '+ selector);
$('.isotope').isotope({ filter: selector });
return false;
});
$('.buttonlink').click(function(){
$('.buttonlink').removeClass('active');
$(this).addClass('active');
});
/*
Handle the dynamic image filtering.
Instead of the `initPhotoSwipeFromDOM` code, you need to use
*/
var initPhotoSwipeFromDOM = function(gallerySelector) {
// parse slide data (url, title, size ...) from DOM elements
// (children of gallerySelector)
var hash = '';
var setHash = function setHash( newHash ){
newHash = newHash || '';
if(history.replaceState) {
if (newHash[0] !== '#'){
newHash = '#' + newHash;
}
history.replaceState(null, null, newHash);
}
else {
location.hash = newHash;
}
};
var parseThumbnailElements = function(el) {
var thumbElements = $(el).children(':not(.isotope-hidden)').get(),
numNodes = thumbElements.length,
items = [],
figureEl,
linkEl,
size,
item;
for(var i = 0; i < numNodes; i++) {
figureEl = thumbElements[i]; // <figure> element
// include only element nodes
if(figureEl.nodeType !== 1) {
continue;
}
linkEl = figureEl.children[0]; // <a> element
size = linkEl.getAttribute('data-size').split('x');
// create slide object
item = {
src: linkEl.getAttribute('href'),
w: parseInt(size[0], 10),
h: parseInt(size[1], 10)
};
if(figureEl.children.length > 1) {
// <figcaption> content
item.title = figureEl.children[1].innerHTML;
}
if(linkEl.children.length > 0) {
// <img> thumbnail element, retrieving thumbnail url
item.msrc = linkEl.children[0].getAttribute('src');
}
item.el = figureEl; // save link to element for getThumbBoundsFn
items.push(item);
}
return items;
};
// find nearest parent element
var closest = function closest(el, fn) {
return el && ( fn(el) ? el : closest(el.parentNode, fn) );
};
// triggers when user clicks on thumbnail
var onThumbnailsClick = function(e) {
e = e || window.event;
e.preventDefault ? e.preventDefault() : e.returnValue = false;
var eTarget = e.target || e.srcElement;
// find root element of slide
var clickedListItem = closest(eTarget, function(el) {
return (el.tagName && el.tagName.toUpperCase() === 'FIGURE');
});
if(!clickedListItem) {
return;
}
// find index of clicked item by looping through all child nodes
// alternatively, you may define index via data- attribute
var clickedGallery = clickedListItem.parentNode,
childNodes = $(clickedListItem.parentNode).children(':not(.isotope-hidden)').get(),
numChildNodes = childNodes.length,
nodeIndex = 0,
index;
for (var i = 0; i < numChildNodes; i++) {
if(childNodes[i].nodeType !== 1) {
continue;
}
if(childNodes[i] === clickedListItem) {
index = nodeIndex;
break;
}
nodeIndex++;
}
if(index >= 0) {
// open PhotoSwipe if valid index found
var id = eTarget.getAttribute('title');
hash = window.location.hash;
setHash( 'img=' + encodeURIComponent(id) );
openPhotoSwipe( index, clickedGallery );
}
return false;
};
// parse custom imag eid #img=imagetitle
var photoswipeParseHash = function() {
var hash = window.location.hash.substring(1),
params = {};
if(hash.length < 5) {
return params;
}
var pair = hash.split('=');
if (pair.length === 2){
params[pair[0]] = pair[1];
}
return params;
};
var openPhotoSwipe = function(index, galleryElement, disableAnimation) {
var pswpElement = document.querySelectorAll('.pswp')[0],
gallery,
options,
items;
items = parseThumbnailElements(galleryElement);
// define options (if needed)
options = {
index: index,
history: false,
// define gallery index (for URL)
galleryUID: galleryElement.getAttribute('data-pswp-uid'),
getThumbBoundsFn: function(index) {
// See Options -> getThumbBoundsFn section of documentation for more info
var thumbnail = items[index].el.getElementsByTagName('img')[0], // find thumbnail
pageYScroll = window.pageYOffset || document.documentElement.scrollTop,
rect = thumbnail.getBoundingClientRect();
return {x:rect.left, y:rect.top + pageYScroll, w:rect.width};
}
};
if(disableAnimation) {
options.showAnimationDuration = 0;
}
// Pass data to PhotoSwipe and initialize it
gallery = new PhotoSwipe( pswpElement, PhotoSwipeUI_Default, items, options);
gallery.listen('destroy',function() {
setHash( hash );
});
gallery.listen('afterChange',function(){
var id = $(this.items[ this.getCurrentIndex() ].el).find('a img').attr('title');
setHash( 'img=' + encodeURIComponent(id) );
});
gallery.init();
};
// loop through all gallery elements and bind events
var galleryElements = document.querySelectorAll( gallerySelector );
for(var i = 0, l = galleryElements.length; i < l; i++) {
galleryElements[i].setAttribute('data-pswp-uid', i+1);
galleryElements[i].onclick = onThumbnailsClick;
}
// Parse URL and open gallery if it contains #&pid=3&gid=1
var hashData = photoswipeParseHash();
if(hashData.hasOwnProperty('img')) {
var gallery = $(galleryElements[0]),
figure = gallery.find('img[title="'+ hashData['img'] +'"]').closest('figure'),
index = gallery.children('figure').index(figure);
openPhotoSwipe( index, galleryElements[0], true );
}
};
// execute above function
initPhotoSwipeFromDOM('.gallery_container');
$('.isotope').imagesLoaded().progress( function() {
console.log('imagesloaded');
$('.isotope').isotope('layout');
});
});
</script>
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