image_widget_crop.module

<?php

/**
 * @file
 * Contains image_widget_crop.module.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Render\Element;
use Drupal\image_widget_crop\ImageWidgetCrop;
use Drupal\file\Plugin\Field\FieldType\FileFieldItemList;

/**
 * Implements hook_help().
 */
function image_widget_crop_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.image_widget_crop':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Implement CROP API into the fields image');
      $output .= '</dl>';
      return $output;
  }
}

/**
 * Implements hook_field_widget_info_alter().
 */
function image_widget_cropfield_widget_info_alter(array &$info) {
  // Let a new field type re-use an existing widget.
  $info['image_image']['field_types'][] = 'image_widget_crop';
}

/**
 * Implements hook_theme().
 */
function image_widget_crop_theme() {
  return [
    'crop_container' => [
      'render element' => 'element',
    ],
    'crop_image_container' => [
      'render element' => 'element',
    ],
    'crop_sidebar' => [
      'render element' => 'element',
    ],
    'crop_list_items' => [
      'render element' => 'element'
    ]
  ];
}

/**
 * Prepares variables for crop_list_items templates.
 *
 * Default template: crop-list-items.html.twig.
 *
 * @param array $variables
 *   An associative array containing:
 *   - element: An associative array containing the properties of the element.
 *     Properties used: #id, #attributes, #children.
 */
function template_preprocess_crop_list_items(array &$variables) {
  $variables['has_parent'] = FALSE;
  $element = $variables['element'];
  // Ensure #attributes is set.
  $element += array('#attributes' => array());

  // Special handling for form elements.
  if (isset($element['#array_parents'])) {
    // Assign an html ID.
    if (!isset($element['#attributes']['id'])) {
      $element['#attributes']['id'] = $element['#id'];
    }
    $variables['has_parent'] = TRUE;
  }

  // Get variables into elements and pass it to twig template.
  foreach ($element['#variables'] as $variable_key => $var) {
    $variables[$variable_key] = $var;
  }

  $variables['attributes'] = $element['#attributes'];
}

/**
 * Prepares variables for crop_container templates.
 *
 * Default template: crop-container.html.twig.
 *
 * @param array $variables
 *   An associative array containing:
 *   - element: An associative array containing the properties of the element.
 *     Properties used: #id, #attributes, #children.
 */
function template_preprocess_crop_container(array &$variables) {
  $variables['has_parent'] = FALSE;
  $element = $variables['element'];
  // Ensure #attributes is set.
  $element += array('#attributes' => array());

  // Special handling for form elements.
  if (isset($element['#array_parents'])) {
    // Assign an html ID.
    if (!isset($element['#attributes']['id'])) {
      $element['#attributes']['id'] = $element['#id'];
    }
    $variables['has_parent'] = TRUE;
  }
  // Determine whether there are any child elements in the element that are not
  // fully-specified render arrays. If there are any, then the child
  // elements present nested lists and we automatically inherit the render
  // array properties of the current list to them.
  foreach (Element::children($element) as $key) {
    $items[] = $element[$key];
    foreach ($items as $child_key => $child_value) {
      if (!isset($items['#type']) && !isset($items['#theme']) && !isset($items['#markup'])) {
        if (!isset($items['#items'])) {
          $items['#items'][$child_key] = $child_value;
        }
      }
    }
  }

  $variables['items'] = $items;
  $variables['attributes'] = $element['#attributes'];
  $variables['element_type'] = $element['#element_type'];
}

/**
 * Prepares variables for crop_sidebar templates.
 *
 * Default template: crop-sidebar.html.twig.
 *
 * @param array $variables
 *   An associative array containing:
 *   - element: An associative array containing the properties of the element.
 *     Properties used: #id, #attributes, #children.
 */
function template_preprocess_crop_sidebar(array &$variables) {
  $variables['has_parent'] = FALSE;
  $element = $variables['element'];
  // Ensure #attributes is set.
  $element += array('#attributes' => array());

  // Special handling for form elements.
  if (isset($element['#array_parents'])) {
    // Assign an html ID.
    if (!isset($element['#attributes']['id'])) {
      $element['#attributes']['id'] = $element['#id'];
    }
    $variables['has_parent'] = TRUE;
  }

  // Get all child elements into sidebar.
  foreach (Element::children($element) as $key) {
    $child = &$element[$key];
    $items[] = $child;
  }

  // Get the type of wrapper element.
  $variables['element_type'] = $element['#element_type'];

  // Add attributes to wrapper element.
  $variables['attributes'] = $element['#attributes'];

  // Send to twig all items into sidebar element.
  $variables['items'] = $items;
}

/**
 * Prepares variables for container templates.
 *
 * Default template: crop-sidebar.html.twig.
 *
 * @param array $variables
 *   An associative array containing:
 *   - element: An associative array containing the properties of the element.
 *     Properties used: #id, #attributes, #children.
 */
function template_preprocess_crop_image_container(array &$variables) {
  $variables['has_parent'] = FALSE;
  $element = $variables['element'];
  // Ensure #attributes is set.
  $element += array('#attributes' => array());

  // Special handling for form elements.
  if (isset($element['#array_parents'])) {
    // Assign an html ID.
    if (!isset($element['#attributes']['id'])) {
      $element['#attributes']['id'] = $element['#id'];
    }
    $variables['has_parent'] = TRUE;
  }

  foreach ($element['#variables'] as $variable_key => $var) {
    $variables[$variable_key] = $var;
  }

  foreach (Element::children($element) as $key) {
    $child = &$element[$key];
    $items[] = $child;
  }

  // Send to twig all items into sidebar element.
  $variables['items'] = $items;
  $variables['attributes'] = $element['#attributes'];
}

/**
 * Implements hook_entity_presave().
 */
function image_widget_crop_entity_presave(Drupal\Core\Entity\EntityInterface $entity) {
  if (isset($entity) && method_exists($entity, 'getFields')) {
    foreach ($entity->getFields() as $entity_fields) {
      if ($entity_fields instanceof FileFieldItemList && isset($entity_fields->crop_preview_wrapper)) {
        // Set edit state to False by default.
        $edit = FALSE;

        // Get the route params attributes.
        $route_params = \Drupal::requestStack()
          ->getCurrentRequest()->attributes->get('_route_params');

        /** @var \Drupal\image_widget_crop\ImageWidgetCrop $crop */
        $crop = new ImageWidgetCrop();

        // Verify if the current form is an edit.
        if (isset($route_params['_entity_form']) && preg_match('/.edit/', $route_params['_entity_form'])) {
          $edit = TRUE;
        }

        // Parse the value of a crop_preview_wrapper element and get,
        // the properties associate with her image style.
        foreach ($entity_fields->crop_preview_wrapper['container'] as $image_style_name => $properties) {

          /** @var \Drupal\image\Entity\ImageStyle $image_style */
          $image_style = \Drupal::entityManager()
            ->getStorage('image_style')
            ->load($image_style_name);

          // Save the entity if has not already been saved by some other code.
          if (isset($properties['values']) && (!empty($properties['values']['crop-w']) && !empty($properties['values']['crop-h']))) {
            $crop->cropByImageStyle($properties['values'], $entity_fields->getValue()['0'], $image_style, $edit);
          }
          elseif ($properties['delete-crop'] == '1') {
            $crop->deleteCrop($entity_fields->getValue()['0']['file-uri'], $image_style);
          }
        }
      }
    }
  }
}

/**
 * Implements hook_css_alter().
 */
function image_widget_crop_css_alter(&$css) {
  // Add FontAwesome.
  $fontawesome = '//netdna.bootstrapcdn.com/font-awesome/4.0.1/css/font-awesome.min.css';
  $css[$fontawesome] = array(
    'data' => $fontawesome,
    'type' => 'external',
    'every_page' => TRUE,
    'media' => 'all',
    'preprocess' => FALSE,
    'group' => CSS_AGGREGATE_THEME,
    'browsers' => array('IE' => TRUE, '!IE' => TRUE),
    'weight' => -2,
  );
}