Sample gallery

site/content/post/gallery1.md

@@ -0,0 +1,7 @@
+---
+date: 2019-02-13 20:00:00
+tags: ["photos"]
+title: "Galerie d'exemple"
+---
+
+{{< gallery dir="/images/gallery1" >}}

site/layouts/shortcodes/gallery.html

@@ -0,0 +1,28 @@
+{{ $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 -->
+    {{- $files := readDir (print "/static/" .) }}
+    {{- 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 $baseURL ($.Get "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 $baseURL ($.Get "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>
+            <a href="{{ $linkURL }}" itemprop="contentUrl"></a><!-- put <a> last so it is stacked on top -->
+          </figure>
+        </div>
+      {{- end }}
+    {{- end }}
+  {{- end }}
+</div>