comparison core/modules/image/image.admin.inc @ 0:c75dbcec494b

Initial commit from drush-created site

+<?php
+
+/**
+ * @file
+ * Administration pages for image settings.
+ */
+
+use Drupal\Core\Render\Element;
+
+/**
+ * Prepares variables for image style preview templates.
+ *
+ * Default template: image-style-preview.html.twig.
+ *
+ * @param array $variables
+ *   An associative array containing:
+ *   - style: \Drupal\image\ImageStyleInterface image style being previewed.
+ */
+function template_preprocess_image_style_preview(&$variables) {
+  // Style information.
+  $style = $variables['style'];
+  $variables['style_id'] = $style->id();
+  $variables['style_name'] = $style->label();
+
+  // Cache bypass token.
+  $variables['cache_bypass'] = REQUEST_TIME;
+
+  // Sample image info.
+  $sample_width = 160;
+  $sample_height = 160;
+  $image_factory = \Drupal::service('image.factory');
+
+  // Set up original file information.
+  $original_path = \Drupal::config('image.settings')->get('preview_image');
+  $original_image = $image_factory->get($original_path);
+  $variables['original'] = [
+    'url' => file_url_transform_relative(file_create_url($original_path)),
+    'width' => $original_image->getWidth(),
+    'height' => $original_image->getHeight(),
+  ];
+  if ($variables['original']['width'] > $variables['original']['height']) {
+    $variables['preview']['original']['width'] = min($variables['original']['width'], $sample_width);
+    $variables['preview']['original']['height'] = round($variables['preview']['original']['width'] / $variables['original']['width'] * $variables['original']['height']);
+  }
+  else {
+    $variables['preview']['original']['height'] = min($variables['original']['height'], $sample_height);
+    $variables['preview']['original']['width'] = round($variables['preview']['original']['height'] / $variables['original']['height'] * $variables['original']['width']);
+  }
+
+  // Set up derivative file information.
+  $preview_file = $style->buildUri($original_path);
+  // Create derivative if necessary.
+  if (!file_exists($preview_file)) {
+    $style->createDerivative($original_path, $preview_file);
+  }
+  $preview_image = $image_factory->get($preview_file);
+  $variables['derivative'] = [
+    'url' => file_url_transform_relative(file_create_url($preview_file)),
+    'width' => $preview_image->getWidth(),
+    'height' => $preview_image->getHeight(),
+  ];
+  if ($variables['derivative']['width'] > $variables['derivative']['height']) {
+    $variables['preview']['derivative']['width'] = min($variables['derivative']['width'], $sample_width);
+    $variables['preview']['derivative']['height'] = round($variables['preview']['derivative']['width'] / $variables['derivative']['width'] * $variables['derivative']['height']);
+  }
+  else {
+    $variables['preview']['derivative']['height'] = min($variables['derivative']['height'], $sample_height);
+    $variables['preview']['derivative']['width'] = round($variables['preview']['derivative']['height'] / $variables['derivative']['height'] * $variables['derivative']['width']);
+  }
+
+  // Build the preview of the original image.
+  $variables['original']['rendered'] = [
+    '#theme' => 'image',
+    '#uri' => $original_path,
+    '#alt' => t('Sample original image'),
+    '#title' => '',
+    '#attributes' => [
+      'width' => $variables['original']['width'],
+      'height' => $variables['original']['height'],
+      'style' => 'width: ' . $variables['preview']['original']['width'] . 'px; height: ' . $variables['preview']['original']['height'] . 'px;',
+    ],
+  ];
+
+  // Build the preview of the image style derivative. Timestamps are added
+  // to prevent caching of images on the client side.
+  $variables['derivative']['rendered'] = [
+    '#theme' => 'image',
+    '#uri' => $variables['derivative']['url'] . '?cache_bypass=' . $variables['cache_bypass'],
+    '#alt' => t('Sample modified image'),
+    '#title' => '',
+    '#attributes' => [
+      'width' => $variables['derivative']['width'],
+      'height' => $variables['derivative']['height'],
+      'style' => 'width: ' . $variables['preview']['derivative']['width'] . 'px; height: ' . $variables['preview']['derivative']['height'] . 'px;',
+    ],
+  ];
+
+}
+
+/**
+ * Prepares variables for image anchor templates.
+ *
+ * Default template: image-anchor.html.twig.
+ *
+ * @param array $variables
+ *   An associative array containing:
+ *   - element: An associative array containing the image.
+ */
+function template_preprocess_image_anchor(&$variables) {
+  $element = $variables['element'];
+
+  $rows = [];
+  $row = [];
+  foreach (Element::children($element) as $n => $key) {
+    $element[$key]['#attributes']['title'] = $element[$key]['#title'];
+    unset($element[$key]['#title']);
+    $row[] = [
+      'data' => $element[$key],
+    ];
+    if ($n % 3 == 3 - 1) {
+      $rows[] = $row;
+      $row = [];
+    }
+  }
+
+  $variables['table'] = [
+    '#type' => 'table',
+    '#header' => [],
+    '#rows' => $rows,
+    '#attributes' => [
+      'class' => ['image-anchor'],
+    ],
+  ];
+}