islandora_custom_thumbnail.module

<?php

/**
 * @file
 * Defines all the hooks this module implements.
 */

 /**
  * Implements hook_menu().
  */
function islandora_custom_thumbnail_menu() {
  return array(
    'admin/islandora/tools/islandora_custom_thumbnail' => array(
      'title' => 'Islandora Custom Thumbnail',
      'description' => 'Configure settings for the Islandora Custom Thumbnail module.',
      'page callback' => 'drupal_get_form',
      'page arguments' => array('islandora_custom_thumbnail_admin_settings'),
      'access arguments' => array('administer site configuration'),
      'file' => 'includes/admin.form.inc',
    ),
  );
}

/**
 * Implements hook_islandora_ingest_steps_alter().
 */
function islandora_custom_thumbnail_islandora_ingest_steps_alter(array &$steps, array &$form_state) {
  if (isset($steps['xml_form_builder_metadata_step'])) {
    $association = isset($steps['xml_form_builder_metadata_step']['args'][0]) ? $steps['xml_form_builder_metadata_step']['args'][0] : NULL;
    $steps['islandora_custom_thumbnail_upload'] = array(
      'type' => 'form',
      'weight' => 20,
      'form_id' => 'islandora_custom_thumbnail_file_form',
      'args' => array(),
      'file' => 'includes/file.form.inc',
      'module' => 'islandora_custom_thumbnail',
    );
  }
}

/**
 * Implements hook_islandora_derivative_alter().
 */
function islandora_custom_thumbnail_islandora_derivative_alter(&$derivatives, AbstractObject $object = NULL, $ds_modified_params = array()) {
  foreach ($derivatives as $key => $derivative) {
    if ($derivative['destination_dsid'] == 'TN' && variable_get('islandora_custom_thumbnail_suppress_thumbnail_regeneration', TRUE)) {
      unset($derivatives[$key]);
    }
  }
}