From b59dc3b68c821a13eecbf4f797a3df926fd90b80 Mon Sep 17 00:00:00 2001
From: Andy Heathershaw <andy@andysh.uk>
Date: Tue, 12 Apr 2022 12:15:53 +0100
Subject: [PATCH] #3178 Allow a "thumbnails" property to be configured against
 a content type to control the output of the thumbnail link on the field when
 "getValue" is called on it

---
 config/bolt/contenttypes.yaml   | 17 +++++++++++++++++
 src/Entity/Field/ImageField.php | 15 +++++++++++++--
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/config/bolt/contenttypes.yaml b/config/bolt/contenttypes.yaml
index a74bc1bf3..df33d7f25 100644
--- a/config/bolt/contenttypes.yaml
+++ b/config/bolt/contenttypes.yaml
@@ -592,3 +592,20 @@ validationdemos:
 #            filter: '*_xyz.twig'
 #    taxonomy: [ tags ]
 #    records_per_page: 20
+#
+# Image field thumbnails
+#
+# To customise the thumbnail URL generated for a field from the getValue() function (or field.value) in Twig,
+# add a "thumbnails" node to your field definition.
+#
+#contenttypexyz:
+#    name: ContentType Xyz
+#    slug: contenttypexyz
+#    fields:
+#        image:
+#            type: image
+#            thumbnails:
+#                size: [120,120]
+#                cropping: crop
+#    taxonomy: [ tags ]
+#    records_per_page: 20
diff --git a/src/Entity/Field/ImageField.php b/src/Entity/Field/ImageField.php
index 3635f487c..9f0f8d3d9 100644
--- a/src/Entity/Field/ImageField.php
+++ b/src/Entity/Field/ImageField.php
@@ -64,7 +64,18 @@ public function getValue(): array
         $thumbPackage = new PathPackage('/thumbs/', new EmptyVersionStrategy());
         $thumbnailHelper = new ThumbnailHelper();
 
-        $path = $thumbnailHelper->path($this->get('filename'), 400, 400);
+        $fieldDefinition = $this->getDefinition();
+        $path = isset($fieldDefinition['thumbnails'])
+            ? $thumbnailHelper->path(
+                $this->get('filename'),
+                isset($fieldDefinition['thumbnails']['size']) ? $fieldDefinition['thumbnails']['size'][0] : 400,
+                isset($fieldDefinition['thumbnails']['size']) ? $fieldDefinition['thumbnails']['size'][1] : 400,
+                null,
+                null,
+                isset($fieldDefinition['thumbnails']['cropping']) ? $fieldDefinition['thumbnails']['cropping'] : null
+            )
+            : $thumbnailHelper->path($this->get('filename'), 400, 400);
+
         $value['thumbnail'] = $thumbPackage->getUrl($path);
 
         return $value;
@@ -88,7 +99,7 @@ public function setLinkedMedia(MediaRepository $mediaRepository): void
         if (! $this->get('filename')) {
             return;
         }
-        
+
         $media = $mediaRepository->findOneByFullFilename($this->get('filename'));
 
         if ($media) {