path: root/gmap_arcgis.module

<?php

// $Id$

/**
 * @file
 * Support for ArcGIS into GMap.
 *
 * This module implements support for ArcGIS API into a GMap.
 */

/**
 * Implementation of hook_perm()
 */
function gmap_arcgis_perm() {
  return array('access gmap_arcgis content');
}

/**
 * Implementation of hook_gmap().
 */
function gmap_arcgis_gmap($op, &$map) {
    if ($op == 'pre_theme_map') {
        /**
         * Use $map to change and add custom overlays into
         * a given map instance.
         */
        if (isset($map['arcgis'])) {
            global $base_url;

            /**
             * Make sure that shapes js code are loaded.
             *
             * This is needed as a workaround to the current GMap
             * module that doesn't add shapes js if $map['shapes']
             * wasn't previously defined.
             */
            if (!empty($map['shapes'])) {
                $gmap_path = drupal_get_path('module', 'gmap') . '/js/';
                drupal_add_js($gmap_path . 'shapeloader_static.js');
                drupal_add_js($gmap_path . 'gmap_shapes.js');
            }

            /**
             * The order to load the following js code is important.
             */
            // Add Google js API
            $key = variable_get('gmap_api_key', '');
            $script = '<script type="text/javascript" ';
            drupal_set_html_head($script . 'src="http://www.google.com/jsapi?key=' . $key . '&sensor=true&language=pt-BR"></script>');

            // Add ArcGIS js API
            drupal_set_html_head($script . 'src="'. $base_url .'/sites/all/libraries/google-maps-utility-library-v3/arcgislink/src/arcgislink_compiled.js"></script>');

            // Setup Map Id
            drupal_add_js(array('gmap_arcgis' => array('id' => $map['id'])), 'setting');

            /**
             * Setup polygons and labels. Labels have the following format:
             *
             *   $map['arcgis']['labels'] = array($layer1 [, $layer2 [,... $layerN]]);
             *
             * Where $layer is
             *
             *   $layer = array($layer_uri, $fields, $content, $icon);
             *
             * Where $layer_uri is a MapService layer, $fields is an array with
             * a pair of layer fields to pass to the query, $content is a string
             * with the content to display for each marker and $icon is an array
             * with parameteres from a GIcon class
             *
             *   $icon = array($shadow, $image, $info_size, $shadow_size,
             *                 $info_anchor, $info_window_anchor);
             *
             * For more info on the GIcon class, see
             * http://code.google.com/intl/pt-BR/apis/maps/documentation/reference.html#GIcon
             *
             * Example:
             *
             *   $labels = array(
             *       array("http://mapservice/layer1", array('id', 'name'), array(
             *           NULL, 'http://path/to/icon.png',
             *           array(20, 34), array(37, 34), array(9, 34), array(9, 2)
             *           )
             *         ),
             *       array("http://mapservice/layer2"),
             *   );
             */
            /**
             * The code below provides titles on markers
             */
            //if(is_array($map['markers'])) {
            //  array_walk($map['markers'], 'add_title_on_marker');
            //}

            if (isset($map['arcgis']['polygons'])) {
                drupal_add_js(array('gmap_arcgis' => array('polygons' => $map['arcgis']['polygons'])), 'setting');
            }
            if (isset($map['arcgis']['labels'])) {
                drupal_add_js(array('gmap_arcgis' => array('labels' => $map['arcgis']['labels'])), 'setting');
            }

            /* $map['markers'][] = array(
              'latitude'      =>  '-22.7559207',
              'longitude'     => '-48.1640625',
              'markername'    => 'Eventos',
              'offset'        => 0,
              'text'          => 'Um teste',
              'opts'          => array(
              'title'     => 'Teste de evento',
              'nid'       => 10853,
              'category'  => 'marker_uc',
              ),

              ); */

            // print views_embed_view('eventos');
            /*
              $my_content_view = views_get_view('eventos');
              $my_content_view->build('default');
              $my_content_view->execute('default');

              $results = $my_content_view->result;

              foreach($results AS $r) {

                // Format the Body of the ballon
                $inicio = format_date($r->event_unix_event_start);
                $fim = format_date($r->event_unix_event_end);
                $body = '<div style="width:350px;height:250px;overflow:auto">';
                $body .= "<h1>$r->node_title</h1>";
                $body .= "
                <p>
                $r->node_revisions_body
                </p>
                <ul>
                <li>
                Data início: $inicio
                <li>Data fim $fim
                </ul>
                ";
                $body .= '</div>';
  
                $data['latitude']   = $r->location_latitude;
                $data['longitude']  = $r->location_longitude;
                $data['title']      = $r->node_title;
                $data['offset']     = 0;
                $data['nid']        = $r->nid;
                $data['body']       = $body;
                $data['category']   = 'marker_uc';
  
                __addMarker(&$map, $data);

              } */

            // Add custom js
            $gmap_arcgis_path = drupal_get_path('module', 'gmap_arcgis') . '/';
            drupal_add_js($gmap_arcgis_path . 'gmap_arcgis.js');
            //jquery_ui_add('ui.dialog');
            jquery_ui_add('effects.fold');
            jquery_ui_add('effects.explode');
            jquery_ui_add('effects.core');
            jquery_ui_add('ui.slider');

            $path_ui_css = drupal_get_path('module', 'jquery_ui');
            drupal_add_css($path_ui_css . '/jquery.ui/themes/default/ui.all.css');
        }
    }
}

/**
 * Set the title of the marker;
 * @param array $marker
 */
function add_title_on_marker(&$marker) {
    if (!empty($marker['text'])) {
        $dom = new DOMDocument();
        $dom->loadHTML($marker['text']);
        //$dom->preserveWhiteSpace = false;

        $divs = $dom->getElementsByTagName('div');
        if ($divs) {
            foreach ($divs AS $div) {

                if ($div->getAttribute('id') === 'nid') {

                    $x = node_load($div->nodeValue);

                    $titulo = $x->field_categoria[0]['value'] . ' ' . $x->field_preposicao[0]['value'] . ' ' . $x->title;
                    $marker['opts'] = array('title' => $titulo, 'nid' => $div->nodeValue, 'category' => 'marker_uc');
                }
            }
        }
    }
}

/**
 * Wrapper to add custom markers on map. Need to be out somewhere
 * @param array marker
 */
function __addMarker(&$map, $data) {
    $map['markers'][] = array(
        'latitude' => $data['latitude'],
        'longitude' => $data['longitude'],
        'markername' => $data['markername'],
        'offset' => $data['offset'],
        'text' => $data['body'],
        'opts' => array(
            'title' => $data['title'],
            'nid' => $data['nid'],
            'category' => $data['category'],
        ),
    );
}

/**
 * Implementation of hook_block()
 */
function gmap_arcgis_block($op='list', $delta=0, $edit=array()) {
    global $map;
    switch ($op) {
        case 'list':
            $blocks[0]['info'] = t('Protected areas list');
            return $blocks;

        case 'view':
            $blocks['subject'] = t('Protected areas list');
            $blocks['content'] = drupal_get_form('uc_form') .
                    '<div id="abrefecha" class="close_gmap_arcgis"><a href="javascript:void(0)" id="clickmapa" title="Temas">X</a></div>';

            return $blocks;

        case 'configure':

        case 'save':
    }
}


function gmap_arcgis_link_nota_tecnica() {
  // global $base_url;
  //$str = http://uc.socioambiental.org/quem-somos#

  return l(t('Sources'), 'quem-somos', array('fragment' => 'tabset-tab-3', 'external' => TRUE));
}

/**
 * Implementation of hook_menu().
 */
function gmap_arcgis_menu() {
  $items['gmap_arcgis/mapserver'] = array(
    'title'            => 'MapServer Proxy',
    'description'      => 'Caches requests to a MapServer',
    'page callback'    => 'gmap_arcgis_mapserver',
    'access arguments' => array('access content'),
    'type'             => MENU_CALLBACK,
  );

  return $items;
}

/**
 * Menu callback.
 *
 * Caches dynamic ArcGIS requests by ignoring the timestamp pattern.
 */
function gmap_arcgis_mapserver() {
  header('Content-Type: text/plain;charset=utf-8');

  // The ArcGIS server URL.
  $base    = 'http://gis2.socioambiental.org:8399/arcgis/rest/services/';

  // The dynamic pattern we want to exclude.
  $pattern = '/_[0-9]*._callback/';

  $dynamic = FALSE;
  $request = $_SERVER['QUERY_STRING'];
  $query   = str_replace('q=gmap_arcgis/mapserver/', '', $request);
  $query   = preg_replace('/&/', '?', $query, 1);
  $dest    = $base . $query;
  $process = curl_init($dest);

  if (preg_match($pattern, $dest, $timestamp) == 1) {
    $dynamic = TRUE;
    $key     = sha1(preg_replace($pattern, '', $dest));
  }
  else {
    $key = sha1($dest);
  }

  $data = cache_get($key, 'cache_page');

  if ($data == 0) {
    curl_setopt($process, CURLOPT_TIMEOUT, 30);
    curl_setopt($process, CURLOPT_RETURNTRANSFER, TRUE);

    $return = curl_exec($process);
    curl_close($process);

    cache_set($key, $return, 'cache_page', CACHE_TEMPORARY);
  }
  else {
    $return = $dynamic == TRUE ? preg_replace($pattern, $timestamp[0], $data->data) : $data->data;

    // Cache expiration.
    if ($data->created < time() - 3600) {
      cache_clear_all($key, 'cache_page');
    }
  }

  echo $return;
  exit;
}