sulram/block-gallery.html

## block-gallery.html
{{ if images }}
  <div class="image-gallery is-multiline is-mobile columns">
    {{ assets:images }}
    <figure class="column is-narrow">
      <a href="{{ url }}" class="photoswipe" title="{{ caption }}" data-size="{{ width }}x{{ height }}">
        <img width="128" height="128" src="{{ glide:url width="256" height="256" }}">
      </a>
    </figure>
    {{ /assets:images }}
  </div>
{{ /if }}

## layout.html
<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, initial-scale=1">
		<title>{{ title }}</title>
		<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.3/default-skin/default-skin.min.css">
		<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.3/photoswipe.css">
		<link rel="stylesheet" href="{{ theme:css }}">
	</head>
	<body>
		{{ template_content }}
		{{ partial:photoswipe }}
		<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.3/photoswipe.js"></script>
		<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.3/photoswipe-ui-default.min.js"></script>
		<script src="{{ theme:js src="sulram.photoswipe"}}"></script>
		<script src="{{ theme:js }}"></script>
	</body>
</html>

## photoswipe.html
<!-- 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 of them in the 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>

## sulram.photoswipe.js
;(function($) {

	/* PhotoSwipes */

	var pswpElement = $('.pswp')[0];

	var openGallery = function(selector,index){
		var slides = [];
		$(selector).each(function(i,el){
			var size = $(el).attr('data-size').split('x');
			slides.push({
				src: $(el).attr('href'),
				w: parseInt(size[0], 10),
				h: parseInt(size[1], 10),
				title: $(el).attr('title')
			});
		});
		var options = {
			index: index,
			shareEl: false,
			fullscreenEl: false,
			showHideOpacity: true,
			getThumbBoundsFn: function(index) {

				// find thumbnail element
				var thumbnail = document.querySelectorAll(selector)[index];

				// get window scroll Y
				var pageYScroll = window.pageYOffset || document.documentElement.scrollTop;
				// optionally get horizontal scroll

				// get position of element relative to viewport
				var rect = thumbnail.getBoundingClientRect();

				// w = width
				return {x:rect.left, y:rect.top + pageYScroll, w:rect.width};


				// Good guide on how to get element coordinates:
				// http://javascript.info/tutorial/coordinates
			}
		};
		var gallery = new PhotoSwipe( pswpElement, PhotoSwipeUI_Default, slides, options);
		gallery.init();
	};

	if($('a.photoswipe').length){

		var image_links = $('a.photoswipe');

		image_links.on('click',function(e){
			e.preventDefault();
			var img = $(this).find('img');
			var that = this;
			var rel = $(this).attr('rel');
			//$(this).attr('data-size', img.width() * 4 + 'x' + img.height() * 4);
			var index = $('a.photoswipe[rel="'+rel+'"]').index(this)
			setTimeout( function(){
				console.log("a.photoswipe",img,rel,index)
				openGallery('a.photoswipe[rel="'+rel+'"]', index);
			}, 1);
		});

	}

})(jQuery);
	{{ if images }}
	<div class="image-gallery is-multiline is-mobile columns">
	{{ assets:images }}
	<figure class="column is-narrow">
	<a href="{{ url }}" class="photoswipe" title="{{ caption }}" data-size="{{ width }}x{{ height }}">
	<img width="128" height="128" src="{{ glide:url width="256" height="256" }}">
	</a>
	</figure>
	{{ /assets:images }}
	</div>
	{{ /if }}
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>{{ title }}</title>
	<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.3/default-skin/default-skin.min.css">
	<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.3/photoswipe.css">
	<link rel="stylesheet" href="{{ theme:css }}">
	</head>
	<body>
	{{ template_content }}
	{{ partial:photoswipe }}
	<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.3/photoswipe.js"></script>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.3/photoswipe-ui-default.min.js"></script>
	<script src="{{ theme:js src="sulram.photoswipe"}}"></script>
	<script src="{{ theme:js }}"></script>
	</body>
	</html>
	<!-- 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 of them in the 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>
	;(function($) {

	/* PhotoSwipes */

	var pswpElement = $('.pswp')[0];

	var openGallery = function(selector,index){
	var slides = [];
	$(selector).each(function(i,el){
	var size = $(el).attr('data-size').split('x');
	slides.push({
	src: $(el).attr('href'),
	w: parseInt(size[0], 10),
	h: parseInt(size[1], 10),
	title: $(el).attr('title')
	});
	});
	var options = {
	index: index,
	shareEl: false,
	fullscreenEl: false,
	showHideOpacity: true,
	getThumbBoundsFn: function(index) {

	// find thumbnail element
	var thumbnail = document.querySelectorAll(selector)[index];

	// get window scroll Y
	var pageYScroll = window.pageYOffset \|\| document.documentElement.scrollTop;
	// optionally get horizontal scroll

	// get position of element relative to viewport
	var rect = thumbnail.getBoundingClientRect();

	// w = width
	return {x:rect.left, y:rect.top + pageYScroll, w:rect.width};


	// Good guide on how to get element coordinates:
	// http://javascript.info/tutorial/coordinates
	}
	};
	var gallery = new PhotoSwipe( pswpElement, PhotoSwipeUI_Default, slides, options);
	gallery.init();
	};

	if($('a.photoswipe').length){

	var image_links = $('a.photoswipe');

	image_links.on('click',function(e){
	e.preventDefault();
	var img = $(this).find('img');
	var that = this;
	var rel = $(this).attr('rel');
	//$(this).attr('data-size', img.width() * 4 + 'x' + img.height() * 4);
	var index = $('a.photoswipe[rel="'+rel+'"]').index(this)
	setTimeout( function(){
	console.log("a.photoswipe",img,rel,index)
	openGallery('a.photoswipe[rel="'+rel+'"]', index);
	}, 1);
	});

	}

	})(jQuery);