feat: add image processing, improvements

content/blog/2025-03-lwn-burden-of-knowledge.md

@@ -3,7 +3,7 @@ title: "The burden of knowledge: dealing with open-source risks"
 date: 2025-03-10
 categories:
   - english
-  - news
+  - article
 tags:
   - OSPO
   - Community

content/blog/2025-12-openrailday-moderation/index.md

@@ -18,5 +18,3 @@ event:
 ---
 
 I had the pleasure to moderate the OpenRail Day 2025 in Paris, organised by the [OpenRail Association](https://openrailassociation.org) to share knowledge and experiences about open source software in the railway industry. The event featured several talks and panel discussions with experts from different companies and organisations involved in open source projects related to railways.
-
-![](openrailday-stage.jpg)

themes/hugo-sustain/assets/scss/default.scss

@@ -336,6 +336,10 @@ pre code {
       }
     }
 
+    h4 span {
+      cursor: default;
+    }
+
     h1,
     h4 a {
       color: var(--primary-color-dark);

themes/hugo-sustain/layouts/_default/list.html

@@ -63,7 +63,7 @@
           {{ range .Paginator.Pages.ByPublishDate.Reverse }}
             <div class="blog-summary">
               <h4>
-                {{- partial "blog/pre-headline.html" . -}}
+                {{ partial "blog/pre-headline.html" . -}}
                 <strong><a href="{{ .RelPermalink }}">{{ .Title | markdownify }}</a></strong>
               </h4>
               <div class="metadata-summary">

themes/hugo-sustain/layouts/partials/blog/headerimage.html

@@ -1,15 +1,21 @@
 {{- $page := . -}}
+{{- $image := "" }}
 {{- with $page.Params.headerimage }}
   <div class="header-image">
     {{- if eq $page.BundleType "leaf" }}
       {{- with $page.Resources.GetMatch .src }}
-        <img src="{{ .RelPermalink }}" />
+        {{- $image = . }}
       {{- end }}
     {{- else }}
       {{- with resources.GetMatch (printf "**/%s" .src) }}
-        <img src="{{ .RelPermalink }}" />
+        {{- $image = . }}
       {{- end }}
     {{- end }}
+    {{- $processes := .processes | default (slice "fill 1000x440 webp" )}}
+    {{- $image = partial "image-processing" (dict "image" $image "processes" $processes "filter" .filter) -}}
+    {{- with $image }}
+      <img src="{{ .RelPermalink }}" />
+    {{- end }}
     {{- with .text }}<p>{{ . | markdownify }}</p>{{ end }}
   </div>
 {{- end }}

themes/hugo-sustain/layouts/partials/blog/pre-headline.html

@@ -1,9 +1,13 @@
 {{- $cats := .Page.Params.categories }}
-{{- $symbols := dict "news" "🗞️" "presentation" "🎤" "podcast" "🎧" }}
+{{- $symbols := dict "article" "🗞️" "presentation" "🎤" "podcast" "🎧" }}
-{{- $selection := "" }}
+{{- $icon := "" }}
+{{- $title := "" }}
 {{- range $cat := $cats }}
   {{- with index $symbols $cat }}
-    {{- $selection = (printf "%s  " .) | safeHTML }}
+    {{- $icon = . }}
+    {{- $title = $cat | humanize }}
   {{- end }}
 {{- end }}
-{{- return $selection }}
+{{- with $icon }}
+<span title="{{ $title }}">{{ $icon }}&nbsp;&nbsp;</span>
+{{- end -}}

themes/hugo-sustain/layouts/partials/blog/verb.html

@@ -1,5 +1,5 @@
 {{- $cats := .Page.Params.categories }}
-{{- $symbols := dict "news" "Article published" "presentation" "Presentation given" "podcast" "Podcast released" }}
+{{- $symbols := dict "article" "Article published" "presentation" "Presentation given" "podcast" "Podcast released" }}
 {{- $selection := "" }}
 {{- range $cat := $cats }}
   {{- with index $symbols $cat }}

themes/hugo-sustain/layouts/partials/image-processing.html

@@ -0,0 +1,32 @@
+{{- /* Expects .image (resolved image resource), optionally .processes and .filter */}}
+{{- $image := .image }}
+{{- range .processes }}
+  {{- $image = $image.Process . }}
+{{- end }}
+{{- with .filter }}
+  {{- $filters := slice }}
+  {{- range . }}
+    {{- range $method, $args := . }}
+      {{/*  No, this cannot be generalised, as strings cannot be converted to functions...  */}}
+      {{- if eq $method "GaussianBlur" }}
+        {{- $filters = $filters | append (images.GaussianBlur $args) }}
+      {{- else if eq $method "Brightness" }}
+        {{- $filters = $filters | append (images.Brightness $args) }}
+      {{- else if eq $method "Opacity" }}
+        {{- $filters = $filters | append (images.Opacity $args) }}
+      {{- else if eq $method "Pixelate" }}
+        {{- $filters = $filters | append (images.Pixelate $args) }}
+      {{- else if eq $method "Saturation" }}
+        {{- $filters = $filters | append (images.Saturation $args) }}
+      {{- else if eq $method "Sepia" }}
+        {{- $filters = $filters | append (images.Sepia $args) }}
+      {{- else if eq $method "Grayscale" }}
+        {{- $filters = $filters | append images.Grayscale }}
+      {{- else }}
+        {{- warnf "Unsupported filter: %s" $method }}
+      {{- end }}
+    {{- end }}
+  {{- end }}
+  {{- $image = $image.Filter $filters }}
+{{- end }}
+{{- return $image }}