islandora_bookviewer.module

<?php

// $Id$

/*
 * Created on Aug 10, 2007
 */

/**
 * Drupal hook for admin form
 * fedora_repository_name is the name of the top level collection this module will query
 * fedora_repository_pid is the name of the top level pid.
 * Stores this info in the drupal variables table.
 * the name and pid can also be passed as url parameters
 */
function islandora_bookviewer_admin() {
  return "";
}

function islandora_bookviewer_admin_settings_submit($form, $form_values) {

}

/**
 * drupal hook to show help
 */
function islandora_bookviewer_help($path, $arg) {
  switch ($path) {
    case 'admin/modules#description' :
      return t('Grabs a list of items from a collection in Drupal that are presented on the home page.');
    case 'node/add#fedora_repository' :
      return t('Use this page to grab a list of items from a Fedora collection.');
  }
}

function islandora_bookviewer_menu() {
  $items['getbookpage/%'] = array(
    'page callback' => 'islandora_bookviewer_get_book_page',
    'page arguments' => array(1),
    'access callback' => TRUE,
    //'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
  );
  $items['mods2html/%'] = array(
    'page callback' => 'islandora_bookviewer_get_mods',
    'page arguments' => array(1),
    'access callback' => TRUE,
    //'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
  );
  $items['bookreader/setup'] = array(
    'page callback' => 'islandora_bookviewer_setup',
    'type' => MENU_CALLBACK,
    'access arguments' => array('view fedora collection'),
  );


  //experimental - do not expose
  $items['bookreader/standalone'] = array(
    'page callback' => 'bookreader',
    'file' => 'standalone.inc',
    'type' => MENU_CALLBACK,
   // 'access arguments' => array('view fedora collection'),
    'access_callback'=>TRUE
  );
  return $items;
}


function islandora_bookviewer_perm(){
  return array('use bookreader');
}
/*
  function islandora_bookviewer_get_book_page($page) {
  global $base_url;

  // the preferred page
  $page_path = $base_url .":8080/adore-djatoka/resolver?url_ver=Z39.88-2004&rft_id=". $base_url ."/drupal/fedora/repository/". $page ."/JP2/&svc_id=info:lanl-repo/svc/getRegion&svc_val_fmt=info:ofi/fmt:kev:mtx:jpeg2000&svc.format=image/png&svc.level=4&svc.rotate=0";
  // the fallback if the preferred one fails
  $page_path = $base_url ."/drupal/fedora/repository/". $page ."/JP2";

  return $page_path;
  } */

function islandora_bookviewer_get_mods($page) {
  global $base_url;
  $url = $base_url . ":8080/saxon/SaxonServlet?source=" . $base_url . "/fedora/repository/" . $page . "/MODS&style=" . $base_url . "/" . drupal_get_path('module', 'islandora_bookviewer') . "/mods2html.xsl";
  $http = drupal_http_request($url);
  //return $http->data;
  print $http->data;
  return;
}



function islandora_bookviewer_form_islandora_book_admin_settings_alter(&$form, &$form_state) {

  $djatoka_path = isset($form_state['values']['islandora_djatoka_path']) ? $form_state['values']['islandora_djatoka_path'] : variable_get('islandora_djatoka_path', 'http://localhost:8080/adore-djatoka');
  $djatoka_avail = is_url_valid($djatoka_path);
  $confirmation_message = ($djatoka_avail ? '<img src="' . url('misc/watchdog-ok.png') . '"/>'
          . t('Djatoka url is valid.') : '<img src="'
          . url('misc/watchdog-error.png') . '"/> '
          . t('Unable to locate djatoka installtion at !tile_path</p>', array('!tile_path' => $djatoka_path)));

  $form['book_ahah_wrapper']['islandora_djatoka_path'] = array(
    '#type' => 'textfield',
    '#title' => t('Path to Djatoka'),
    '#description' => t('Path to Djatoka installation'),
    '#default_value' => $djatoka_path,
    '#ahah' => array(
      'path' => 'islandora/book/ocr',
      'wrapper' => 'ibook-url',
      'effect' => 'fade',
      'event' => 'change'),
  );

  $form['book_ahah_wrapper']['infobox3'] = array(
    '#type' => 'item',
    '#value' => $confirmation_message,
  );
}
/**
 * Provides page information for Bookviewer
 * To be invoked with ajax
 * @global url $base_url
 * @param string $pid
 */
function islandora_bookviewer_setup($pid) {
  module_load_include('inc', 'islandora_book', 'book_pack_utils');
  module_load_include('inc', 'fedora_repository', 'api/fedora_item');
  global $base_url;
  $item = new Fedora_Item($pid);
  $label = $item->objectProfile->objLabel;
  //$djatoka_prefix = "http://localhost:8080/adore-djatoka/resolver?url_ver=Z39.88-2004&rft_id=";
  $djatoka_prefix = variable_get('islandora_djatoka_path', 'http://localhost:8080/adore-djatoka') . '/resolver?url_ver=Z39.88-2004&rft_id=';
  $islandora_prefix = $base_url . '/fedora/repository/';
  $fedora_prefix = variable_get('fedora_base_url', 'http:8080/fedora');
  $book_pids = get_sorted_pages($pid);
  $filename = $djatoka_prefix . "$fedora_prefix/objects/" . $book_pids[count($book_pids)] . "/datastreams/JP2/content&svc_id=info:lanl-repo/svc/getMetadata";
  $pageData = json_decode(file_get_contents($filename));
  $configs = array();
  $configs['DJATOKA_PREFIX'] = $djatoka_prefix;
  $configs['ISLANDORA_PREFIX'] = $islandora_prefix;
  $configs['FEDORA_PREFIX'] = $fedora_prefix;
  $configs['COMPRESSION'] = 4;
  $configs['book_pids'] = $book_pids;
  $configs['page_width'] = $pageData->width;
  $configs['page_height'] = $pageData->height;
  $configs['page_count'] = count($book_pids);
  $configs['label'] = $label;

  $json = json_encode($configs);
  echo $json;
}