Edit

<?php

/**

 * @file

 * Functions for dealing maps

 *

 * @copyright

 *   (C) 2007-2013 EDIT

 *   European Distributed Institute of Taxonomy

 *   http://www.e-taxonomy.eu

 *

 *   The contents of this module are subject to the Mozilla

 *   Public License Version 1.1.

 * @see http://www.mozilla.org/MPL/MPL-1.1.html

 *

 * @author

 *   - Andreas Kohlbecker <a.kohlbecker@BGBM.org>

 */

/**

 * Compose an render array for distribution and occurrence

 * maps.

 *

 * The map can either be a plain image or a dynamic open layers map

 * depending on the settings

 *

 * compose_hook() implementation

 *

 * @param string $occurrence_query

 * @param string $distribution_query

 * @param string $legend_format_query

 * @param array $event_listeners

 *   An associative array of with OpenLayers.Map event names as key and corresponding js callbacks.

 *   In addition to the event names '#execute' as key is also allowed.

 *   Valid events are:

 *      - move

 *      - moveend

 *      - zoomend

 *      - changelayer

 *      - changebaselayer

 *      - #execute:

 *            force execution of the given callback after registration of the event handlers

 *   see http://dev.openlayers.org/apidocs/files/OpenLayers/Map-js.html#OpenLayers.Map.events for more

 *

 * @return array

 *    A drupal render array

 *

 * Similar compose function compose_distribution_map()

 *

 * @ingroup compose

 */

function compose_map($occurrence_query, $distribution_query, $legend_format_query, array $event_listeners = array()) {

  $map_settings = get_array_variable_merged(CDM_MAP_DISTRIBUTION, CDM_MAP_DISTRIBUTION_DEFAULT);

  if ($map_settings['map_type'] == 1) {

    $map_html = get_openlayers_map(

        $map_settings['width'],

        $map_settings['height'],

        $map_settings['bbox'],

        $occurrence_query,

        $distribution_query,

        $legend_format_query,

        $map_settings['caption'],

        $event_listeners

    );

  }

  else {

    $map_html = get_image_map(

        $map_settings['width'],

        $map_settings['height'],

        $map_settings['bbox'],

        $occurrence_query,

        $distribution_query,

        $legend_format_query,

        $map_settings['caption']

    );

  }

  return markup_to_render_array($map_html, 0);

}

/**

 * @param $map_settings

 *   The map settings array as retrieved by e.g. get_array_variable_merged(CDM_MAP_DISTRIBUTION, CDM_MAP_DISTRIBUTION_DEFAULT);

 * @param array $event_listeners

 *   An associative array of with OpenLayers.Map event names as key and corresponding js callbacks.

 *   In addition to the event names '#execute' as key is also allowed.

 *   Valid events are:

 *      - move

 *      - moveend

 *      - zoomend

 *      - changelayer

 *      - changebaselayer

 *      - #execute:

 *            force execution of the given callback after registration of the event handlers

 *   see http://dev.openlayers.org/apidocs/files/OpenLayers/Map-js.html#OpenLayers.Map.events for more

 */

function _add_js_openlayers_map($map_settings, array $event_listeners = array()) {

  _add_js_openlayers();

  $edit_map_service = get_edit_map_service_settings();

  $gmap_api_key = variable_get('gmap_api_key', 'ABQIAAAAFho6eHAcUOTHLmH9IYHAeBRi_j0U6kJrkFvY4-OX2XYmEAa76BTsyMmEq-tn6nFNtD2UdEGvfhvoCQ');

  drupal_add_js(drupal_get_path('module', 'cdm_dataportal') . '/js/map/openlayers_map.js');

  drupal_add_js(drupal_get_path('module', 'cdm_dataportal') . '/js/map/openlayers_layers.js');

  $cdm_openlayers_options = array(

      'legendPosition'  => '3',

      'boundingBox' => "'" . $map_settings['bbox'] . "'",

      'distributionOpacity' => "'" . $map_settings['distribution_opacity'] . "'",

      'legendOpacity' => "'" . $map_settings['legend']['opacity'] . "'",

      'showLayerSwitcher' => $map_settings['openlayers']['show_layer_switcher']  ==  1,

      'displayOutsideMaxExtent' => $map_settings['openlayers']['display_outside_max_extent'] == 1

      // if no baseLayerNames or defaultBaseLayerName are not defined

      // the defaults in cdm_openlayers.js will be used

  );

  // --- setting the base layer options

  if (is_array($map_settings['openlayers']['base_layers']) && count($map_settings['openlayers']['base_layers']) > 0) {

    $layer_names = $map_settings['openlayers']['base_layers'];

    if(isset($layer_names['PREFERRED'])){

      $cdm_openlayers_options['defaultBaseLayerName'] = $layer_names['PREFERRED'];

      unset($layer_names['PREFERRED']);

    }

    $cdm_openlayers_options['baseLayerNames'] = array_values($layer_names);

    if (isset($layer_names['gmap']) || isset($layer_names['gsat']) || isset($layer_names['ghyb'])) {

      // gmaps version 2 (needs api key)

      drupal_add_js('http://maps.google.com/maps?file=api&v=2&key=' . $gmap_api_key . '', array('type' => 'external'));

      // gmaps version 3 (does not need api key)

  //     drupal_add_js('http://maps.google.com/maps?file=api&v=3&sensor=false', array('type' => 'external'));

      drupal_add_js('http://dev.virtualearth.net/mapcontrol/mapcontrol.ashx?v=6.1', array('type' => 'external'));

    }

  }

  // --- custom wms base layer

  $map_settings['openlayers']['custom_wms_base_layer']['params'] = json_decode($map_settings['openlayers']['custom_wms_base_layer']['params']);

  $cdm_openlayers_options['customWMSBaseLayerData'] = $map_settings['openlayers']['custom_wms_base_layer'];

  // --- eventhandlers

  $event_listeners_js = '';

  $execute_handler = '';

  foreach($event_listeners as $event=>$js_callback){

    if($event == '#execute'){

      $execute_handler = 'map_container.each(function(){' . $js_callback . '();});';

    } else {

      $event_listeners_js .= ($event_listeners_js ? ",\n": "\n") .'"' . $event . '": ' . $js_callback;

    }

  }

//   // combine keys and values

//   foreach($cdm_openlayers_options as $key=>&$val){

//     $val = $key . ": " . $val;

//   };

  // window.onload - is executed when the document and images etc is fully loaded

  // Query(document).ready - is executed much earlier, when the DOM is loaded

  drupal_add_js("

          jQuery(document).ready(function() {

                window.onload = function () {

                  var map_container = jQuery('#openlayers_map').cdm_openlayers_map(

                   '" . $edit_map_service['base_uri'] . "',

                   '" . $edit_map_service['version'] . "',

                   " .  json_encode($cdm_openlayers_options) . "

                );

                map_container.each(function(){

                        this.cdmOpenlayersMap.registerEvents({" . $event_listeners_js . "});

                });

                " . $execute_handler . "

        };

      });

    ", array('type' => 'inline'));

}

/**

 * @todo Enter description here ...

 *

 * @param unknown_type $width

 * @param unknown_type $bounding_box

 * @param unknown_type $occurrenceQuery

 * @param unknown_type $distributionQuery

 * @param unknown_type $legendFormatQuery

 * @param unknown_type $map_caption

 * @param array $event_listeners

 *   An associative array of with OpenLayers.Map event names as key and corresponding js callbacks.

 *   In addition to the event names '#execute' as key is also allowed.

 *   Valid events are:

 *      - move

 *      - moveend

 *      - zoomend

 *      - changelayer

 *      - changebaselayer

 *      - #execute:

 *            force execution of the given callback after registration of the event handlers

 *   see http://dev.openlayers.org/apidocs/files/OpenLayers/Map-js.html#OpenLayers.Map.events for more

 *

 * @return String

 *    rendered html

 */

function get_openlayers_map($width, $height, $bounding_box = FALSE, $occurrenceQuery = FALSE, $distributionQuery = FALSE, $legendFormatQuery = FALSE, $map_caption = FALSE, array $event_listeners = array()) {

  $map_settings = get_array_variable_merged(CDM_MAP_DISTRIBUTION, CDM_MAP_DISTRIBUTION_DEFAULT);

  _add_js_openlayers_map($map_settings, $event_listeners);

  $out = '<div id="openlayers">';

  $out .= '<div id="openlayers_map" class="smallmap"';

  if($width) {

    if(!$height){

      $height = $width / 2;

    }

    $out .= ' style="width: ' . $width . 'px; height:' . $height . 'px"';

  }

  // Additional query parameters as set in the data portal admin section.

  $labels_on = $map_settings['show_labels'];

  $openlayers_map_query_string = '&img=false&ms=' . $width

  . ($bounding_box ? '&bbox=' . $bounding_box : '')

  . ($labels_on ? '&label=' . $labels_on : '');

  if ($occurrenceQuery) {

    // @todo Fix $occurrenceQuery.

    //     $occurrenceQuery .= '&bbox=-180,-90,180,90';

    $occurrenceQuery .= '&l=v%3Aatbi%2Ce_w_0';

    // $occurrenceQuery .= '&l=v:e_w_0';

    // TODO add to cdm service?

    $occurrenceQuery .= '&legend=0';

    $out .= ' occurrenceQuery="' . $occurrenceQuery . '&' . $openlayers_map_query_string . '"';

  }

  if ($distributionQuery) {

    $out .= ' distributionQuery="' . $distributionQuery . '&' . $openlayers_map_query_string . '"';

  }

  if ($legendFormatQuery) {

    $out .= ' legendFormatQuery="' . $legendFormatQuery . '"';

  }

  $out .= '></div></div>';

  // Showing map caption.

  if ($map_caption) {

    // FIXME: replace <br> by according css style.

    $out .= '<div class="distribution_map_caption">' . $map_caption . '</div>' . '<br />';

    $out .= '</div>';

  }

  return $out;

}

/**

 * @todo Enter description here ...

 *

 * @param unknown_type $width

 * @param unknown_type $bounding_box

 * @param unknown_type $occurrenceQuery

 * @param unknown_type $distributionQuery

 * @param unknown_type $legendFormatQuery

 * @param unknown_type $map_caption

 *

* @return String

 *    rendered html

 */

function get_image_map($width, $height= NULL, $bounding_box = FALSE, $occurrenceQuery = FALSE, $distributionQuery = FALSE, $legendFormatQuery = FALSE, $map_caption = FALSE) {

  $map_settings = get_array_variable_merged(CDM_MAP_DISTRIBUTION, CDM_MAP_DISTRIBUTION_DEFAULT);

  $query_string = '&image=true&recalculate=false&legend=1&ms=' . $width . ($height ? ',' . $height : '')

  // Additional query parameters as set in the data portal admin section.

  . ($bounding_box ? '&bbox=' . $bounding_box : '')

  . ($map_settings['show_labels'] ? '&label=' . $map_settings['show_labels'] : '');

  if ($map_caption) {

    $query_string .= '&mlp=3&mc_s=Georgia,15,blue&mc=' . $map_caption;

  }

  if (get_edit_map_service_version_number() >= 1.1) {

    // Either occurrence or distribution - combined maps will be possible

    // in the future.

    if ($occurrenceQuery) {

      // @todo Fix $occurrenceQuery.

      $occurrenceQuery = str_replace("&image=false", "", $occurrenceQuery);

      // $occurrenceQuery .= '&l=v%3Aatbi%2Ce_w_0';

      // Will be replaced below.. HACK!!!

      $occurrenceQuery .= '&l=tdwg4&as=';

      $query_string .= "&" . $occurrenceQuery;

    }

    elseif ($distributionQuery) {

      $query_string .= "&" . $distributionQuery;

    }

    // Apply Plain Image map settings special for version >= 1.1.

    /*

    example : title=a:Naturalized++non-invasive

    &ad=cyprusdivs:bdcode:a:5&as=a:ff9900,,0.1,&l=tdwg4

    &ms=500&bbox=32,34,35,36&img=true&legend=1&mlp=3

    &mc_s=Georgia,15,blue&mc=&recalculate=false

    http://edit.br.fgov.be/edit_wp5/v1/rest_gen.php?

    l=background_gis:b,cyprusdivs&ad=cyprusdivs%3Abdcode%3Aa%3A8%2C4

    &as=a%3A339966%2C%2C0.1%2C|b:0000ff,,

    &bbox=32%2C34%2C35%2C36&img=true&legend=1&mc=&mc_s=Georgia%2C15%2Cblue

    &mlp=3&ms=500&recalculate=false&title=a%3Aindigenous

    */

    $map_service_script_name = "rest_gen.php";

    $bgcolor_areaStyleId = "y";

    $baselayer_areaStyleId = "z";

    $bgcolor_layer = '';

    $additional_area_styles = array();

    // Background color:

    if ($map_settings['image_map']['bg_color'] ) {

      $bgcolor_layer = "background_gis:" . $bgcolor_areaStyleId;

      $additional_area_styles[] = $bgcolor_areaStyleId . ":" . $map_settings['image_map']['bg_color'] . ",,";

    }

    // TODO HACK to replace the default base layer which currently is tdwg4 !!!

    // only needed for distribution maps.

    if (strpos($query_string, "?l=") !== FALSE) {

      $layer_param_token = "?l=";

    }

    else {

      $layer_param_token = "&l=";

    }

    if (strpos($query_string, "?as=") !== FALSE) {

      $areystyle_param_token = "?as=";

    }

    else {

      $areystyle_param_token = "&as=";

    }

    if ($map_settings['image_map']['base_layer']) {

      $query_string = str_replace($layer_param_token . "tdwg4", "$layer_param_token" . $map_settings['image_map']['base_layer'] . ":" . $baselayer_areaStyleId, $query_string);

    }

    else {

      $query_string = str_replace($layer_param_token . "tdwg4", $layer_param_token . "tdwg4:" . $baselayer_areaStyleId . ",", $query_string);

    }

    if ($bgcolor_layer) {

      $query_string = str_replace($layer_param_token, $layer_param_token . $bgcolor_layer . ",", $query_string);

    }

    if ($map_settings['image_map']['layer_style']) {

      $additional_area_styles[] = $baselayer_areaStyleId . ":" . $map_settings['image_map']['layer_style'];

    }

    foreach ($additional_area_styles as $as) {

      $query_string = str_replace($areystyle_param_token, $areystyle_param_token . $as . "|", $query_string);

    }

  }

  else {

    // Pre 1.1. version of map service.

    if ($occurrenceQuery) {

      $map_service_script_name = "point.php";

      // Fix $occurrenceQuery.

      $occurrenceQuery = str_replace("&image=false", "", $occurrenceQuery);

      // $occurrenceQuery .= '&l=v%3Aatbi%2Ce_w_0';

      $occurrenceQuery .= '&l=v:e_w_0';

      $query_string .= "&" . $occurrenceQuery;

    }

    elseif ($distributionQuery) {

      $query_string .= "&" . $distributionQuery;

      $map_service_script_name = "areas.php";

    }

  }

  $mapUri = url(get_edit_map_service_full_uri() . '/' . $map_service_script_name . '?' .  $query_string);

  $out = '<img class="distribution_map" src="' . $mapUri . '" alt="Map" />';

  // Showing map caption.

  if ($map_caption) {

    // FIXME: replace <br> by according css style.

    $out .= '<div class="distribution_map_caption">' . $map_caption . '</div>' . '<br />';

    $out .= '</div>';

  }

  return $out;

}