islandora_jquery_zoom.module

<?php

/**
 * @file
 * Hooks and callbacks for this module.
 */

/**
 * Implements hook_menu().
 */
function islandora_jquery_zoom_menu() {
  return array(
    'admin/islandora/jqueryzoom' => array(
      'title' => 'jQuery Zoom',
      'description' => 'Configure the jQuery Zoom viewer.',
      'page callback' => 'drupal_get_form',
      'access arguments' => array('administer site configuration'),
      'page arguments' => array('islandora_jquery_zoom_admin'),
      'file' => 'includes/admin.form.inc',
      'type' => MENU_NORMAL_ITEM,
    ),
  );
}

/**
 * Implements hook_theme().
 */
function islandora_jquery_zoom_theme() {
  return array(
    'islandora_jquery_zoom_viewer' => array(
      'variables' => array(
        'uri' => '',
      ),
      'template' => 'theme/islandora-jquery-zoom',
    ),
  );
}

/**
 * Implements hook_islandora_viewer_info().
 */
function islandora_jquery_zoom_islandora_viewer_info() {
  return array(
    'islandora_jquery_zoom' => array(
      'label' => t('jQuery Zoom'),
      'description' => t('jQuery Zoom viewer for large web images.'),
      'configuration' => 'admin/islandora/jqueryzoom',
      'callback' => 'islandora_jquery_zoom_callback',
        // DZI has xml as mimetype? Not sure how to handle that.
      'mimetype' => array('image/jpg', 'image/jpeg', 'image/png', 'image/gif', 'image/svg+xml'),
    ),
  );
}

/**
 * Callback function for the viewer.
 *
 * @param array $params
 *   Params required by the theme. We require the keys:
 *   - jp2_url: The URL to the JP2 image.
 * @param IslandoraAbstractObject $fedora_object
 *   The object that we are viewing.
 *
 * @return string
 *   HTML repersentation of the OpenSeadragon viewer
 */
function islandora_jquery_zoom_callback($params = NULL, $fedora_object = NULL) {
  if (isset($params['path'])) {
    $image = theme('image', $params);
    return theme('islandora_jquery_zoom_viewer', array('image' => $image, 'fedora_object' => $fedora_object));
  }
}

/**
 * Implements hook_preprocess().
 */
function islandora_jquery_zoom_preprocess_islandora_jquery_zoom_viewer(&$variables) {
  // Variable fedora_object included in results, but not used.
  $library_path = libraries_get_path('zoom');
  $module_path = drupal_get_path('module', 'islandora_jquery_zoom');
  drupal_add_js("$library_path/jquery.zoom.min.js");
  drupal_add_js("$module_path/islandora_jquery_zoom.js");
  drupal_add_css("$module_path/islandora_jquery_zoom.css");
}