Added image gallery - modified from 'liwenyip' hugo-easy-gallery

7 files changed, 408 insertions, 0 deletions

diff --git a/layouts/_default/single.html b/layouts/_default/single.html
index 8b606f5..d4cdf05 100644
--- a/layouts/_default/single.html
+++ b/layouts/_default/single.html
@@ -22,6 +22,7 @@
         </div>
     {{ end }}
 
+{{/*
     {{ $images := .Resources.Match "images/*" }}
     {{ if gt (len $images) 0 }}
         <ul class="images-list" aria-hidden="true">
@@ -40,6 +41,7 @@
             {{ end }}
         </ul>
     {{ end }}
+*/}}
 {{ end }}
 
 {{ define "lists" }}
diff --git a/layouts/partials/tail.html b/layouts/partials/tail.html
index ac0526b..ed6fbd7 100644
--- a/layouts/partials/tail.html
+++ b/layouts/partials/tail.html
@@ -1,5 +1,15 @@
 {{ "<!-- TAIL.HTML -->" | safeHTML }}
+<!--
 <script src="{{ "plugins/jquery/jquery.js" | absURL }}"></script>
+-->
+<script src="{{ "plugins/jquery/jquery.js" | absURL }}"></script>
+<!-- Load PhotoSwipe js if the load-photoswipe shortcode has been used -->
+{{ if ($.Scratch.Get "photoswipeloaded") }}
+<script src="https://code.jquery.com/jquery-1.12.4.min.js" integrity="sha256-ZosEbRLbNQzLpnKIkEdrPv7lOy9C27hHQ+Xp8a4MxAQ=" crossorigin="anonymous"></script>
+<script src="/js/load-photoswipe.js"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.1/photoswipe.min.js" integrity="sha256-UplRCs9v4KXVJvVY+p+RSo5Q4ilAUXh7kpjyIP5odyc=" crossorigin="anonymous"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.1/photoswipe-ui-default.min.js" integrity="sha256-PWHOlUzc96pMc8ThwRIXPn8yH4NOLu42RQ0b9SpnpFk=" crossorigin="anonymous"></script>
+{{ end }}
 <script src="{{ "plugins/bootstrap/js/bootstrap.min.js" | absURL }}"></script>
 <script src="{{ "plugins/jquery/jquery.easing.min.js" | absURL }}"></script>
 <script src="{{ "plugins/jquery/jquery.fittext.js" | absURL }}"></script>
diff --git a/layouts/shortcodes/figure.html b/layouts/shortcodes/figure.html
new file mode 100644
index 0000000..4c6ff1f
--- /dev/null
+++ b/layouts/shortcodes/figure.html
@@ -0,0 +1,29 @@
+<!--
+Put this file in /layouts/shortcodes/figure.html
+NB this overrides Hugo's built-in "figure" shortcode but is backwards compatible
+Documentation and licence at https://github.com/liwenyip/hugo-easy-gallery/
+-->
+<!-- count how many times we've called this shortcode; load the css if it's the first time -->
+{{- if not ($.Page.Scratch.Get "figurecount") }}<link rel="stylesheet" href="/css/hugo-easy-gallery.css" />{{ end }}
+{{- $.Page.Scratch.Add "figurecount" 1 -}}
+<!-- use either src or link-thumb for thumbnail image -->
+{{- $thumb := .Get "src" | default (printf "%s." (.Get "thumb") | replace (.Get "link") ".") }}
+<div class="box{{ with .Get "caption-position" }} fancy-figure caption-position-{{.}}{{end}}{{ with .Get "caption-effect" }} caption-effect-{{.}}{{end}}" {{ with .Get "width" }}style="max-width:{{.}}"{{end}}>
+  <figure {{ with .Get "class" }}class="{{.}}"{{ end }} itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
+    <div class="img"{{ if .Parent }} style="background-image: url('{{ print .Site.BaseURL $thumb }}');"{{ end }}{{ with .Get "size" }} data-size="{{.}}"{{ end }}>
+      <img itemprop="thumbnail" src="{{ $thumb }}" {{ with .Get "alt" | default (.Get "caption") }}alt="{{.}}"{{ end }}/><!-- <img> hidden if in .gallery -->
+    </div>
+    {{ with .Get "link" | default (.Get "src") }}<a href="{{.}}" itemprop="contentUrl"></a>{{ end }}
+    {{- if or (or (.Get "title") (.Get "caption")) (.Get "attr")}}
+      <figcaption>
+        {{- with .Get "title" }}<h4>{{.}}</h4>{{ end }}
+        {{- if or (.Get "caption") (.Get "attr")}}
+          <p>
+            {{- .Get "caption" -}}
+            {{- with .Get "attrlink"}}<a href="{{.}}">{{ .Get "attr" }}</a>{{ else }}{{ .Get "attr"}}{{ end -}}
+          </p>
+        {{- end }}
+      </figcaption>
+    {{- end }}
+  </figure>
+</div>
diff --git a/layouts/shortcodes/gallery.html b/layouts/shortcodes/gallery.html
new file mode 100644
index 0000000..ab8671b
--- /dev/null
+++ b/layouts/shortcodes/gallery.html
@@ -0,0 +1,53 @@
+<!--
+Put this file in /layouts/shortcodes/gallery.html
+Documentation and licence at https://github.com/liwenyip/hugo-easy-gallery/
+-->
+<!-- count how many times we've called this shortcode; load the css if it's the first time -->
+{{- if not ($.Page.Scratch.Get "figurecount") }}<link rel="stylesheet" href="/css/hugo-easy-gallery.css" />{{ end }}
+{{- $.Page.Scratch.Add "figurecount" 1 }}
+{{ $baseURL := .Site.BaseURL }}
+<div class="gallery caption-position-{{ with .Get "caption-position" | default "bottom" }}{{.}}{{end}} caption-effect-{{ with .Get "caption-effect" | default "slide" }}{{.}}{{end}} hover-effect-{{ with .Get "hover-effect" | default "zoom" }}{{.}}{{end}} {{ if ne (.Get "hover-transition") "none" }}hover-transition{{end}}" itemscope itemtype="http://schema.org/ImageGallery">
+	{{- with (.Get "dir") -}}
+		<!-- If a directory was specified, generate figures for all of the images in the directory -->
+		{{- if eq ($.Get "static") "true" -}}
+            {{ $.Page.Scratch.Set "dirURL" (print .) }}
+            {{ $.Page.Scratch.Set "dirFiles" (print "/static/" .) }}
+		{{- else -}}
+			{{- $dir := print (replace $.Page.Dir  "\\" "/") "/" . }}
+            {{ $.Page.Scratch.Set "dirURL" $dir }}
+            {{ $.Page.Scratch.Set "dirFiles" (print "/content/" $dir "/") }}
+		{{- end -}}
+		{{- $dir := $.Page.Scratch.Get "dirURL" }}
+		{{- $files := readDir ($.Page.Scratch.Get "dirFiles" ) }}
+		{{ $.Page.Scratch.Delete "dirURL" }}
+		{{ $.Page.Scratch.Delete "dirFiles" }}
+
+		{{- range $files -}}
+			<!-- skip files that aren't images, or that inlcude the thumb suffix in their name -->
+			{{- $thumbext := $.Get "thumb" | default "-thumb" }}
+			{{- $isthumb := .Name | findRE ($thumbext | printf "%s\\.") }}<!-- is the current file a thumbnail image? -->
+			{{- $isimg := lower .Name | findRE "\\.(gif|jpg|jpeg|tiff|png|bmp)" }}<!-- is the current file an image? -->
+			{{- if and $isimg (not $isthumb) }}
+				{{- $caption :=  .Name | replaceRE "\\..*" "" | humanize }}<!-- humanized filename without extension -->
+				{{- $linkURL := print $baseURL $dir "/" .Name | absURL }}<!-- absolute URL to hi-res image -->
+				{{- $thumb := .Name | replaceRE "(\\.)" ($thumbext | printf "%s.") }}<!-- filename of thumbnail image -->
+				{{- $thumbexists := where $files "Name" $thumb }}<!-- does a thumbnail image exist? --> 
+				{{- $thumbURL := print $baseURL $dir "/" $thumb | absURL }}<!-- absolute URL to thumbnail image -->
+				<div class="box">
+				  <figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">
+				    <div class="img" style="background-image: url('{{ if $thumbexists }}{{ $thumbURL }}{{ else }}{{ $linkURL }}{{ end }}');" >
+				      <img itemprop="thumbnail" src="{{ if $thumbexists }}{{ $thumbURL }}{{ else }}{{ $linkURL }}{{ end }}" alt="{{ $caption }}" /><!-- <img> hidden if in .gallery -->
+				    </div>
+			      <figcaption>
+		          <p>{{ $caption }}</p>
+			      </figcaption>
+				    <a href="{{ $linkURL }}" itemprop="contentUrl"></a><!-- put <a> last so it is stacked on top -->
+				  </figure>
+				</div>
+			{{- end }}
+		{{- end }}
+	{{- else -}}
+		<!-- If no directory was specified, include any figure shortcodes called within the gallery -->
+	  {{ .Inner }}
+	{{- end }}
+</div>
diff --git a/layouts/shortcodes/load-photoswipe.html b/layouts/shortcodes/load-photoswipe.html
new file mode 100644
index 0000000..4b3bfad
--- /dev/null
+++ b/layouts/shortcodes/load-photoswipe.html
@@ -0,0 +1,75 @@
+<!--
+Put this file in /layouts/shortcodes/load-photoswipe.html
+Documentation and licence at https://github.com/liwenyip/hugo-easy-gallery/
+-->
+
+<!-- prevent this shortcode from being loaded more than once per page -->
+{{ if not ($.Page.Scratch.Get "photoswipeloaded") }}
+  {{ $.Page.Scratch.Set "photoswipeloaded" 1 }}
+
+<!--
+*** jQuery must be loaded before load-photoswipe.js ***
+- If your template already loads jQuery in the header then you don't need to load it again here.
+- If your template already loads jQuery in the footer, then you could load load-photoswipe.js from the footer instead
+-->
+<!-- these files are loaded in the theme footer
+<script src="https://code.jquery.com/jquery-1.12.4.min.js" integrity="sha256-ZosEbRLbNQzLpnKIkEdrPv7lOy9C27hHQ+Xp8a4MxAQ=" crossorigin="anonymous"></script>
+<script src="/js/load-photoswipe.js"></script>
+-->
+
+<!-- Photoswipe css/js libraries -->
+<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.1/photoswipe.min.css" integrity="sha256-sCl5PUOGMLfFYctzDW3MtRib0ctyUvI9Qsmq2wXOeBY=" crossorigin="anonymous" />
+<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.1/default-skin/default-skin.min.css" integrity="sha256-BFeI1V+Vh1Rk37wswuOYn5lsTcaU96hGaI7OUVCLjPc=" crossorigin="anonymous" />
+<!-- these files are loaded in the theme footer
+<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.1/photoswipe.min.js" integrity="sha256-UplRCs9v4KXVJvVY+p+RSo5Q4ilAUXh7kpjyIP5odyc=" crossorigin="anonymous"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/photoswipe/4.1.1/photoswipe-ui-default.min.js" integrity="sha256-PWHOlUzc96pMc8ThwRIXPn8yH4NOLu42RQ0b9SpnpFk=" crossorigin="anonymous"></script>
+-->
+
+<!-- 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 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 }}
\ No newline at end of file
diff --git a/static/css/hugo-easy-gallery.css b/static/css/hugo-easy-gallery.css
new file mode 100644
index 0000000..d78dfec
--- /dev/null
+++ b/static/css/hugo-easy-gallery.css
@@ -0,0 +1,159 @@
+/*
+Put this file in /static/css/hugo-easy-gallery.css
+Documentation and licence at https://github.com/liwenyip/hugo-easy-gallery/
+*/
+
+
+/*
+Grid Layout Styles
+*/
+.gallery {
+    overflow: hidden;
+    margin: 10px;
+    max-width: 768px;
+}
+.gallery .box {
+    float: left;
+    position: relative;
+    /* Default: 1 tile wide */
+    width: 100%;
+    padding-bottom: 100%; 
+}
+@media only screen and (min-width : 365px) {
+    /* Tablet view: 2 tiles */
+    .gallery .box {
+        width: 50%;
+        padding-bottom: 50%;
+    }
+}
+@media only screen and (min-width : 480px) {
+    /* Small desktop / ipad view: 3 tiles */
+    .gallery .box {
+        width: 33.3%;
+        padding-bottom: 33.3%; /*  */
+    }
+}
+@media only screen and (min-width : 9999px) {
+   /* Medium desktop: 4 tiles */
+   .box {
+      width: 25%;
+      padding-bottom: 25%;
+   }
+}
+
+/*
+Transition styles
+*/
+.gallery.hover-transition figure,
+.gallery.hover-effect-zoom .img, 
+.gallery:not(.caption-effect-appear) figcaption,
+.fancy-figure:not(.caption-effect-appear) figcaption {
+    -webkit-transition: all 0.3s ease-in-out;
+    -moz-transition: all 0.3s ease-in-out;
+    -o-transition: all 0.3s ease-in-out;
+    transition: all 0.3s ease-in-out;
+}
+/*
+figure styles
+*/
+figure {
+    position:relative; /* purely to allow absolution positioning of figcaption */
+    overflow: hidden;
+}
+.gallery figure {
+    position: absolute;
+    left: 5px;
+    right: 5px;
+    top: 5px;
+    bottom: 5px;
+}
+.gallery.hover-effect-grow figure:hover {
+    transform: scale(1.05);
+}
+.gallery.hover-effect-shrink figure:hover {
+    transform: scale(0.95);
+}
+.gallery.hover-effect-slidedown figure:hover {
+    transform: translateY(5px);
+}
+.gallery.hover-effect-slideup figure:hover {
+    transform: translateY(-5px);
+}
+
+/*
+img / a styles
+*/
+
+.gallery .img {
+    position: absolute;
+    left: 0;
+    right: 0;
+    top: 0;
+    bottom: 0;
+    background-size: cover;
+    background-position: 50% 50%;
+    background-repeat: no-repeat;
+}
+.gallery.hover-effect-zoom figure:hover .img {
+    transform: scale(1.05);
+}
+.gallery img {
+    display: none; /* only show the img if not inside a gallery */
+}
+figure a {
+    position: absolute;
+    left: 0;
+    right: 0;
+    top: 0;
+    bottom: 0;
+}
+
+/*
+figcaption styles
+*/
+.gallery figcaption,
+.fancy-figure figcaption {
+    position: absolute;
+    bottom: 0;
+    left: 0;
+    right: 0;
+    background: #000;
+    color: #FFF;
+    text-align: center;
+    font-size: 75%; /* change this if you want bigger text */
+    background: rgba(0, 0, 0, 0.5);
+    opacity: 1;
+    cursor: pointer;
+}
+.gallery.caption-position-none figcaption,
+.fancy-figure.caption-position-none figcaption  {
+    display: none;
+}
+.gallery.caption-position-center figcaption,
+.fancy-figure.caption-position-center figcaption {
+    top: 0;
+    padding: 40% 5px;
+}
+.gallery.caption-position-bottom figcaption,
+.fancy-figure.caption-position-bottom figcaption {
+    padding: 5px;
+}
+.gallery.caption-effect-fade figure:not(:hover) figcaption,
+.gallery.caption-effect-appear figure:not(:hover) figcaption,
+.fancy-figure.caption-effect-fade figure:not(:hover) figcaption,
+.fancy-figure.caption-effect-appear figure:not(:hover) figcaption {
+    background: rgba(0, 0, 0, 0);
+    opacity: 0;
+}
+.gallery.caption-effect-slide.caption-position-bottom figure:not(:hover) figcaption,
+.fancy-figure.caption-effect-slide.caption-position-bottom figure:not(:hover) figcaption {
+    margin-bottom: -100%;
+}
+.gallery.caption-effect-slide.caption-position-center figure:not(:hover) figcaption,
+.fancy-figure.caption-effect-slide.caption-position-center figure:not(:hover) figcaption  {
+    top: 100%;
+}
+figcaption p {
+    margin: auto; /* override style in theme */
+}
+
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();
+		});	
+	});
+});
\ No newline at end of file