From f69aae099db4db0b394dda948c4a811e99707efa Mon Sep 17 00:00:00 2001
From: Alexander O'Neill <aloneill@gmail.com>
Date: Fri, 26 Aug 2022 17:52:20 +0000
Subject: [PATCH] WIP: Add hOCR file stream to IIIF Manifest.
---
.../src/Plugin/views/style/IIIFManifest.php | 23 +++++++++++++++----
1 file changed, 19 insertions(+), 4 deletions(-)
diff --git a/modules/islandora_iiif/src/Plugin/views/style/IIIFManifest.php b/modules/islandora_iiif/src/Plugin/views/style/IIIFManifest.php
index b06b0f5d..ad5ea178 100644
--- a/modules/islandora_iiif/src/Plugin/views/style/IIIFManifest.php
+++ b/modules/islandora_iiif/src/Plugin/views/style/IIIFManifest.php
@@ -191,20 +191,25 @@ class IIIFManifest extends StylePluginBase {
$canvases = [];
foreach (array_filter(array_values($this->options['iiif_tile_field'])) as $iiif_tile_field) {
$viewsField = $this->view->field[$iiif_tile_field];
- $ocrField = array_pop(array_filter(array_values($this->options['iiif_ocr_file_field'])));
+ $iiif_ocr_file_field = array_filter(array_values($this->options['iiif_ocr_file_field']));
+ $ocrField = count($iiif_ocr_file_field) > 0 ? $this->view->field[$iiif_ocr_file_field[0]] : NULL;
$entity = $viewsField->getEntity($row);
if (isset($entity->{$viewsField->definition['field_name']})) {
/** @var \Drupal\Core\Field\FieldItemListInterface $images */
- $images = $entity->{$viewsField->definition['field_name']};
+ $images = $entity->{$viewsField->definition['field_name']};
foreach ($images as $image) {
if (!$image->entity->access('view')) {
// If the user does not have permission to view the file, skip it.
continue;
}
+
+ $ocrs = $entity->{$ocrField->definition['field_name']};
+
// Create the IIIF URL for this file
// Visiting $iiif_url will resolve to the info.json for the image.
+ $ocr = isset($ocrs[$i]) ? $ocrs[$i] : NULL;
$file_url = $image->entity->createFileUrl(FALSE);
$mime_type = $image->entity->getMimeType();
$iiif_url = rtrim($iiif_address, '/') . '/' . urlencode($file_url);
@@ -242,8 +247,7 @@ class IIIFManifest extends StylePluginBase {
}
}
}
-
- $canvases[] = [
+ $tmp_canvas = [
// @see https://iiif.io/api/presentation/2.1/#canvas
'@id' => $canvas_id,
'@type' => 'sc:Canvas',
@@ -272,6 +276,17 @@ class IIIFManifest extends StylePluginBase {
],
],
];
+
+ if (isset($ocr)) {
+ $tmp_canvas['seeAlso'] = [
+ '@id' => $ocr->entity->createFileUrl(FALSE),
+ 'format' => 'text/vnd.hocr+html',
+ 'profile' => 'http://kba.cloud/hocr-spec',
+ 'label' => 'hOCR embedded text',
+ ];
+ }
+
+ $canvases[] = $tmp_canvas;
}
}
}