function ip_geoloc_openlayers_layers in IP Geolocation Views & Maps 7

Same name and namespace in other branches

1. 8 ip_geoloc.openlayers.inc \ip_geoloc_openlayers_layers()

Implements hook_openlayers_layers().

Called via ctools in the heart of openlayers_build_map(). This function has no arguments, so layers are added unconditionally, unless globals are used.

File

./ip_geoloc.openlayers.inc, line 49

ip_geoloc.openlayers.inc

Code

function ip_geoloc_openlayers_layers() {
  $layers = array();
  $visitor_layer = new stdClass();
  $visitor_layer->api_version = 1;
  $visitor_layer->name = IP_GEOLOC_VISITOR_MARKER_LAYER;
  $visitor_layer->title = 'Current visitor marker';
  $visitor_layer->description = "Layer to mark visitor's current position.";
  $visitor_layer->weight = -10;
  $visitor_layer->data = array(
    'isBaselayer' => FALSE,
    'layer_type' => 'openlayers_layer_type_raw',
    'projection' => array(
      'EPSG:900913',
    ),
  );

  // Add the visitor's location as a single feature in its own layer, so
  // that it may be separately styled (e.g., marker colour) and activated on
  // page admin/structure/openlayers/maps/<map-name>/edit
  $location = ip_geoloc_get_visitor_location();
  if (!empty($location) && isset($location['longitude'])) {
    $longitude = $location['longitude'];
    $latitude = $location['latitude'];
    $visitor_layer->data['features'][] = array(
      'attributes' => array(
        'name' => t('Your approximate location.'),
      ),
      'wkt' => "POINT({$longitude} {$latitude})",
      'projection' => 'EPSG:4326',
    );
  }
  $layers[$visitor_layer->name] = $visitor_layer;
  $num_marker_layers = variable_get('ip_geoloc_num_location_marker_layers', IP_GEOLOC_DEF_NUM_MARKER_LAYERS);
  for ($layer = 1; $layer <= $num_marker_layers; $layer++) {
    $marker_layer = new stdClass();
    $marker_layer->api_version = 1;
    $marker_layer->name = IP_GEOLOC_MARKER_LAYER . $layer;
    $marker_layer->title = "Location markers #{$layer}";
    $marker_layer->description = "Layer to map a view's locations.";
    $marker_layer->weight = $visitor_layer->weight + $layer;
    $marker_layer->data = array(
      'isBaselayer' => FALSE,
      'layer_type' => 'openlayers_layer_type_raw',
      'projection' => array(
        'EPSG:900913',
      ),
    );

    // Features, ie. location markers, are added based on the view output, see
    // file ip_geoloc_plugin_style_openlaysers.inc
    $layers[$marker_layer->name] = $marker_layer;
  }

  // cache_set('ip_geoloc_layer_cache', $layers);
  return $layers;
}