Add before/after comparison block plugin

- Create custom block plugin with Vue 3 + Composition API
- Use kirbyup for building Vue SFC components
- Block allows selecting two images with slider comparison UI
- Preview shows images overlapped at 50% in the panel
- Add beforeafter block to report blueprint
- Update report template to use authors field
- Change text block heading level from 4 to 3

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

site/blueprints/blocks/text.yml

@@ -6,5 +6,5 @@ fields:
   text:
     type: writer
     headings:
-      - 4
+      - 3
     placeholder: field.blocks.text.placeholder

site/blueprints/pages/report.yml

@@ -8,19 +8,22 @@ tabs:
     label: Contenu
     icon: page
     columns:
-      - width: 2/6
+      - width: 1/6
+        fields:
+          emptyLeft:
+            type: gap
+      - width: 4/6
         fields:
           created:
             label: Première publication
             type: date
             display: DD / MM / YYYY
             default: today
-            width: 1/4
+            width: 1/2
-      - width: 4/6
-        fields:
           subtitle:
             label: Sous-titre
             type: text
+            width: 1/2
           chapo:
             label: Chapo
             type: writer
@@ -42,15 +45,21 @@ tabs:
             layouts:
               - "1/1"
               - "1/2, 1/2"
-              - "1/3, 1/3, 1/3"
             fieldsets:
-              - heading
               - text
               - image
+              - beforeafter
+      - width: 1/6
+        fields:
+          emptyRight:
+            type: gap
   metadataTab:
     label: Métadonnées
     icon: table
     fields:
+      authors:
+        label: Auteur(s)
+        type: tags
       incidentDate:
         label: Date de l'incident
         type: date

site/plugins/beforeafter/.gitignore

@@ -0,0 +1,2 @@
+node_modules/
+*.log

site/plugins/beforeafter/blueprints/blocks/beforeafter.yml

@@ -0,0 +1,35 @@
+name: Comparaison Avant/Après
+icon: images
+preview: beforeafter
+fields:
+  imageBefore:
+    label: Image "Avant"
+    type: files
+    multiple: false
+    layout: cards
+    query: page.images
+    uploads: false
+    help: Image affichée à gauche / dessous
+  imageAfter:
+    label: Image "Après"
+    type: files
+    multiple: false
+    layout: cards
+    query: page.images
+    uploads: false
+    help: Image affichée à droite / dessus
+  caption:
+    label: Légende
+    type: text
+    help: Légende commune aux deux images
+  text:
+    label: Texte accompagnant
+    type: writer
+    marks:
+      - bold
+      - italic
+      - link
+    nodes:
+      - bulletList
+      - orderedList
+      - paragraph

site/plugins/beforeafter/index.css

@@ -0,0 +1 @@
+.beforeafter-preview[data-v-2682dba7]{cursor:pointer;border-radius:var(--rounded);overflow:hidden;background:var(--color-background)}.beforeafter-preview__images[data-v-2682dba7]{position:relative;width:100%;height:200px;background:var(--color-gray-200)}.beforeafter-preview__image[data-v-2682dba7]{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover}.beforeafter-preview__image--after[data-v-2682dba7]{clip-path:polygon(0 0,50% 0,50% 100%,0 100%)}.beforeafter-preview__divider[data-v-2682dba7]{position:absolute;left:50%;top:0;bottom:0;width:2px;background:#fff;box-shadow:0 0 8px #0000004d;transform:translate(-1px)}.beforeafter-preview__caption[data-v-2682dba7]{padding:.75rem;font-size:var(--text-sm);color:var(--color-gray-600);font-style:italic;background:var(--color-background);margin:0}.beforeafter-preview__empty[data-v-2682dba7]{padding:3rem 1rem;text-align:center;color:var(--color-gray-500);font-size:var(--text-sm)}.beforeafter-preview:hover .beforeafter-preview__images[data-v-2682dba7]{opacity:.9}

site/plugins/beforeafter/index.js

@@ -0,0 +1 @@
+(function(){"use strict";function f(a,e,t,r,s,n,o,p){var i=typeof a=="function"?a.options:a;return e&&(i.render=e,i.staticRenderFns=t,i._compiled=!0),i._scopeId="data-v-"+n,{exports:a,options:i}}const c={__name:"BeforeAfterBlock",props:{content:Object,endpoints:Object},setup(a){const e=a,t=Vue.computed(()=>{var o;if(!((o=e.content)!=null&&o.imagebefore)||!e.content.imagebefore.length)return null;const n=e.content.imagebefore[0];return(n==null?void 0:n.url)||null}),r=Vue.computed(()=>{var o;if(!((o=e.content)!=null&&o.imageafter)||!e.content.imageafter.length)return null;const n=e.content.imageafter[0];return(n==null?void 0:n.url)||null}),s=Vue.computed(()=>t.value||r.value);return{__sfc:!0,props:e,imageBeforeUrl:t,imageAfterUrl:r,hasImages:s}}};var _=function(){var e=this,t=e._self._c,r=e._self._setupProxy;return t("div",{staticClass:"beforeafter-preview",on:{click:function(s){return e.$emit("open")}}},[r.hasImages?t("div",{staticClass:"beforeafter-preview__images"},[r.imageBeforeUrl?t("img",{staticClass:"beforeafter-preview__image beforeafter-preview__image--before",attrs:{src:r.imageBeforeUrl,alt:"Avant"}}):e._e(),r.imageAfterUrl?t("img",{staticClass:"beforeafter-preview__image beforeafter-preview__image--after",attrs:{src:r.imageAfterUrl,alt:"Après"}}):e._e(),r.imageBeforeUrl&&r.imageAfterUrl?t("div",{staticClass:"beforeafter-preview__divider"}):e._e()]):e._e(),e.content.caption?t("p",{staticClass:"beforeafter-preview__caption"},[e._v(" "+e._s(e.content.caption)+" ")]):e._e(),r.hasImages?e._e():t("div",{staticClass:"beforeafter-preview__empty"},[e._v(" Cliquer pour ajouter des images ")])])},l=[],u=f(c,_,l,!1,null,"2682dba7");const m=u.exports;window.panel.plugin("index/beforeafter",{blocks:{beforeafter:m}})})();

site/plugins/beforeafter/index.php

@@ -0,0 +1,10 @@
+<?php
+
+Kirby::plugin('index/beforeafter', [
+    'blueprints' => [
+        'blocks/beforeafter' => __DIR__ . '/blueprints/blocks/beforeafter.yml'
+    ],
+    'snippets' => [
+        'blocks/beforeafter' => __DIR__ . '/snippets/blocks/beforeafter.php'
+    ]
+]);

site/plugins/beforeafter/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "beforeafter-block",
+  "version": "1.0.0",
+  "scripts": {
+    "dev": "npx -y kirbyup src/index.js --watch",
+    "build": "npx -y kirbyup src/index.js"
+  },
+  "devDependencies": {
+    "@vitejs/plugin-vue": "^6.0.1",
+    "vite": "^7.1.7"
+  }
+}

site/plugins/beforeafter/snippets/blocks/beforeafter.php

@@ -0,0 +1,109 @@
+<?php
+/** @var \Kirby\Cms\Block $block */
+$imageBefore = $block->imageBefore()->toFile();
+$imageAfter = $block->imageAfter()->toFile();
+$caption = $block->caption()->value();
+$text = $block->text()->value();
+?>
+
+<div class="subsection-w-media">
+
+    <div class="media">
+        <div class="container slider-before-after">
+            <div class="image-container">
+                <?php if ($imageBefore): ?>
+                <img class="image-before slider-image"
+                     src="<?= $imageBefore->url() ?>"
+                     alt="<?= $imageBefore->alt()->or('Image avant')->esc() ?>" />
+                <?php endif ?>
+
+                <?php if ($imageAfter): ?>
+                <img class="image-after slider-image"
+                     src="<?= $imageAfter->url() ?>"
+                     alt="<?= $imageAfter->alt()->or('Image après')->esc() ?>" />
+                <?php endif ?>
+            </div>
+
+            <input
+                type="range"
+                min="0"
+                max="100"
+                value="50"
+                aria-label="Pourcentage de la photo avant affichée"
+                class="slider"
+            />
+            <div class="slider-line" aria-hidden="true"></div>
+            <div class="slider-button" aria-hidden="true">
+                <svg
+                    xmlns="http://www.w3.org/2000/svg"
+                    width="30"
+                    height="30"
+                    fill="currentColor"
+                    viewBox="0 0 256 256"
+                >
+                    <rect width="256" height="256" fill="none"></rect>
+                    <line
+                        x1="128"
+                        y1="40"
+                        x2="128"
+                        y2="216"
+                        fill="none"
+                        stroke="currentColor"
+                        stroke-linecap="round"
+                        stroke-linejoin="round"
+                        stroke-width="16"
+                    ></line>
+                    <line
+                        x1="96"
+                        y1="128"
+                        x2="16"
+                        y2="128"
+                        fill="none"
+                        stroke="currentColor"
+                        stroke-linecap="round"
+                        stroke-linejoin="round"
+                        stroke-width="16"
+                    ></line>
+                    <polyline
+                        points="48 160 16 128 48 96"
+                        fill="none"
+                        stroke="currentColor"
+                        stroke-linecap="round"
+                        stroke-linejoin="round"
+                        stroke-width="16"
+                    ></polyline>
+                    <line
+                        x1="160"
+                        y1="128"
+                        x2="240"
+                        y2="128"
+                        fill="none"
+                        stroke="currentColor"
+                        stroke-linecap="round"
+                        stroke-linejoin="round"
+                        stroke-width="16"
+                    ></line>
+                    <polyline
+                        points="208 96 240 128 208 160"
+                        fill="none"
+                        stroke="currentColor"
+                        stroke-linecap="round"
+                        stroke-linejoin="round"
+                        stroke-width="16"
+                    ></polyline>
+                </svg>
+            </div>
+        </div>
+
+        <?php if ($caption): ?>
+        <p class="caption"><?= $caption ?></p>
+        <?php endif ?>
+    </div>
+
+    <?php if ($text): ?>
+    <div class="subsection-txt">
+        <?= $text ?>
+    </div>
+    <?php endif ?>
+
+</div>

site/plugins/beforeafter/src/components/BeforeAfterBlock.vue

@@ -0,0 +1,118 @@
+<template>
+  <div @click="$emit('open')" class="beforeafter-preview">
+    <div v-if="hasImages" class="beforeafter-preview__images">
+      <img
+        v-if="imageBeforeUrl"
+        :src="imageBeforeUrl"
+        class="beforeafter-preview__image beforeafter-preview__image--before"
+        alt="Avant"
+      />
+      <img
+        v-if="imageAfterUrl"
+        :src="imageAfterUrl"
+        class="beforeafter-preview__image beforeafter-preview__image--after"
+        alt="Après"
+      />
+      <div v-if="imageBeforeUrl && imageAfterUrl" class="beforeafter-preview__divider"></div>
+    </div>
+
+    <p v-if="content.caption" class="beforeafter-preview__caption">
+      {{ content.caption }}
+    </p>
+
+    <div v-if="!hasImages" class="beforeafter-preview__empty">
+      Cliquer pour ajouter des images
+    </div>
+  </div>
+</template>
+
+<script setup>
+import { computed } from "vue";
+
+const props = defineProps({
+  content: Object,
+  endpoints: Object
+});
+
+const imageBeforeUrl = computed(() => {
+  // Attention: la clé est en minuscules dans Kirby
+  if (!props.content?.imagebefore || !props.content.imagebefore.length) {
+    return null;
+  }
+  const file = props.content.imagebefore[0];
+  return file?.url || null;
+});
+
+const imageAfterUrl = computed(() => {
+  // Attention: la clé est en minuscules dans Kirby
+  if (!props.content?.imageafter || !props.content.imageafter.length) {
+    return null;
+  }
+  const file = props.content.imageafter[0];
+  return file?.url || null;
+});
+
+const hasImages = computed(() => {
+  return imageBeforeUrl.value || imageAfterUrl.value;
+});
+</script>
+
+<style scoped>
+.beforeafter-preview {
+  cursor: pointer;
+  border-radius: var(--rounded);
+  overflow: hidden;
+  background: var(--color-background);
+}
+
+.beforeafter-preview__images {
+  position: relative;
+  width: 100%;
+  height: 200px;
+  background: var(--color-gray-200);
+}
+
+.beforeafter-preview__image {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+}
+
+.beforeafter-preview__image--after {
+  clip-path: polygon(0 0, 50% 0, 50% 100%, 0 100%);
+}
+
+.beforeafter-preview__divider {
+  position: absolute;
+  left: 50%;
+  top: 0;
+  bottom: 0;
+  width: 2px;
+  background: white;
+  box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
+  transform: translateX(-1px);
+}
+
+.beforeafter-preview__caption {
+  padding: 0.75rem;
+  font-size: var(--text-sm);
+  color: var(--color-gray-600);
+  font-style: italic;
+  background: var(--color-background);
+  margin: 0;
+}
+
+.beforeafter-preview__empty {
+  padding: 3rem 1rem;
+  text-align: center;
+  color: var(--color-gray-500);
+  font-size: var(--text-sm);
+}
+
+.beforeafter-preview:hover .beforeafter-preview__images {
+  opacity: 0.9;
+}
+</style>

site/plugins/beforeafter/src/index.js

@@ -0,0 +1,7 @@
+import BeforeAfterBlock from "./components/BeforeAfterBlock.vue";
+
+window.panel.plugin("index/beforeafter", {
+  blocks: {
+    beforeafter: BeforeAfterBlock
+  }
+});

site/templates/report.php

@@ -29,7 +29,7 @@
     <div class="panel__header">
         <span class="icon"><?= svg('assets/icons/toc.svg') ?></span>
         <span class="text">Table des matières</span>
-         <span class="icon close"><?= svg('assets/icons/close.svg') ?></span>
+        <span class="icon close"><?= svg('assets/icons/close.svg') ?></span>
     </div>
 
     <div class="panel__content">
@@ -77,7 +77,7 @@
         <dl class="report__dl">
             <div class="dl__group">
                 <dt>Auteurs du rapport</dt>
-                <dd>INDEX Investigation</dd>
+                <dd><?= $page->authors() ?></dd>
             </div>
             <div class="dl__group">
                 <dt>Date du rapport</dt>