caddy-hugo2/theme-additions/layouts/partials/gallery.html

<style>
figure {
	text-align: center;
	float: left;
	margin: 0;
	max-width: 100%;
	transition-property: height min-height scale; 
	transition-duration: 1s;
}
.floatclear {
	clear: both;
}
</style>
<article class="article article-type-post" itemscope itemprop="blogPost">
    <div class="article-inner">
        {{ if .Title }}
        <header class="article-header">
            <h1 class="article-title" itemprop="name">{{ .Title }}</h1>
        </header>
        {{ end }}
        <div class="article-meta">
            <a href="{{ .RelPermalink }}" class="article-date">
                <time datetime='{{ .Date.Format "2006-01-02T15:04:05.000-07:00" }}' itemprop="datePublished">{{ .Date.Format "2006-01-02" }}</time>
            </a>
            {{ $Site := .Site }}
            {{ if .Params.categories }}
            <div class="post-categories">
                <div class="article-category">
                    {{ range $i, $e := .Params.categories }}
                    {{ if gt $i 0 }}
                    <span>&gt;</span>
                    {{ end }}
                    <a class="article-category-link" href="{{ $Site.BaseURL }}/categories/{{ $e | urlize }}">{{ $e }}</a>
                    {{ end }}
                </div>
            </div>
            {{ end }}
            {{ if .Site.Params.disqusShortname }}
            <div class="article-comment-link-wrap">
                <a href="{{ .RelPermalink }}#disqus_thread" class="article-comment-link">Comments</a>
            </div>
            {{ end }}
        </div>
        <div class="article-entry" itemprop="articleBody">
	    {{ range $i, $_ := .Params.photos }}
		{{ $splitnum := split .url "/" | len | add -1}}
		{{ $name := index (split .url "/") $splitnum }}
		{{ if not $i }}
		   <figure class="image" id="full-figure" >
			<img src="/media/{{ $name }}" id="{{$name}}" {{ with .alt }}alt="{{ . }}"{{ end }} data-caption="{{.caption}}"/>
			<figcaption>{{ with .caption }}{{ . }}{{ end }}</figcaption>
		   </figure>
		   <div class="floatclear"></div>
		{{ end }}

		   <figure class="thumb" >
			<img src="/media/x100/{{ $name }}" id="{{$name}}" alt="{{ with .alt }}{{ . }}{{ else }}{{ .caption }}{{ end }}" data-name="{{$name}}" data-caption="{{.caption}}"/>
		   </figure>
	    {{ end }}
            <div class="floatclear"></div>
            {{ .Content }}
        </div>
	<script>
	function getElementIndex(node) {
            var index = 0;
            while ( (node = node.previousElementSibling) ) {
                index++;
            }
            return index;
        }

	var image = document.querySelector("figure.image").firstElementChild;
	image.parentElement.style.minHeight = image.scrollHeight + "px";

	image.onload = function () {
		image.parentElement.style.minHeight = '';
	};

	document.querySelector(".article-entry").onclick = function (evt) {
		if (evt.target.tagName === "IMG" && evt.target.parentElement.className === "thumb") {
			image.src = ""
			image.src = "/media/" + evt.target.dataset.name;
			image.nextElementSibling.innerText = evt.target.dataset.caption;
		}
	}
	</script>

        {{ if not .Params.notoc }}
        {{ if .TableOfContents }}
        <div class="article-toc" {{ if .Site.Params.SmartToc }}style="display:none;"{{ end }}>
            <h3>Contents</h3>
            {{ .TableOfContents }}
        </div>
        {{ end }}
        {{ end }}

        {{ if .Site.Params.SmartToc }}
        <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.slim.min.js" integrity="sha256-/SIrNqv8h6QGKDuNoLGA4iret+kyesCkHGzVUUV0shc=" crossorigin="anonymous"></script>
        <script>
            (function() {
                var $toc = $('#TableOfContents');
                if ($toc.length > 0) {
                    var $window = $(window);

                    function onScroll(){
                        var currentScroll = $window.scrollTop();
                        var h = $('.article-entry h1, .article-entry h2, .article-entry h3, .article-entry h4, .article-entry h5, .article-entry h6');
                        var id = "";
                        h.each(function (i, e) {
                            e = $(e);
                            if (e.offset().top - 10 <= currentScroll) {
                                id = e.attr('id');
                            }
                        });
                        var active = $toc.find('a.active');
                        if (active.length == 1 && active.eq(0).attr('href') == '#' + id) return true;

                        active.each(function (i, e) {
                            $(e).removeClass('active').siblings('ul').hide();
                        });
                        $toc.find('a[href="#' + id + '"]').parentsUntil('#TableOfContents').each(function (i, e) {
                            $(e).children('a').addClass('active').siblings('ul').show();
                        });
                    }

                    $window.on('scroll', onScroll);
                    $(document).ready(function() {
                        $toc.find('a').parent('li').find('ul').hide();
                        onScroll();
                        document.getElementsByClassName('article-toc')[0].style.display = '';
                    });
                }
            })();
        </script>
        {{ end }}


        {{ if .Params.tags }}
        <footer class="article-footer">
            <ul class="article-tag-list">
                {{ range .Params.tags }}
                <li class="article-tag-list-item">
                    <a class="article-tag-list-link" href="{{ $Site.BaseURL}}/tags/{{ . | urlize }}">{{ . }}
                    </a>
                </li>
                {{ end }}
            </ul>
        </footer>
        {{ end }}
    </div>
    {{ partial "nav.html" . }}
</article>