theme_gmap_geo_formatter

gmap_geo/gmap_geo.module, line 163

Versions

6

theme_gmap_geo_formatter($element)

Themes a geo field as a gmap.

This uses gmap_picker widget settings from the cck field settings, if they exist, and otherwise uses GMap's default map settings. Bdragon and I (Bec) have talked briefly about a "gmap profile" setup, in which case we could provide a field formatter for each gmap profile ("GMap: profile_name"). This would be ideal.

• Autozoom doesn't yet zoom for polygons and lines; this field formatter

doesn't provide any additional autozoom functionality.

• Linestrings and polygons are rendered as "encoded polylines" in Google Maps,

because they tend to be too complex to render as a plain set of points. Encoded polylines reveal more complexity as the map is zoomed.

Code

<?php
function theme_gmap_geo_formatter($element) {
  module_load_include('inc', 'geo', 'includes/geo.wkb');
  module_load_include('inc', 'gmap', 'gmap_polyutil');

  foreach (element_children($element) as $i) {
    $item = $element[$i]['#item'];

    // get the geographic feature's points as an array
    $wkb = (isset($item['wkb']) ? $item['wkb'] : $item[$element['#field_name'] . '_wkb']);
    $feature = geo_wkb_get_data($wkb, 'array');

    switch ($feature['type']) {
      case 'point':
        $map['markers'][] = array('latitude' => $item['lat'], 'longitude' => $item['lon']);
        break;
      case 'linestring':
        $polyline = gmap_polyutil_polyline($feature['value']);
        $polyline['type'] = 'encoded_line';
        $map['shapes'][] = $polyline;
        break;
      case 'polygon':
        $polyline = gmap_polyutil_polyline($feature['value']);
        $map['shapes'][] = array(
          'type' => 'encoded_polygon',
          'polylines' => array($polyline),
        );
        break;
    }
  }

  if ($map) {
    // Load field instance info. If the field uses the gmap_picker widget, use
    // the widget's gmap macro to build the map array.
    $field = content_fields($element['#field_name'], $element['#type_name']);
    if (isset($field['widget']['gmap_geo_picker_macro'])) {
      $field_map = gmap_parse_macro($field['widget']['gmap_geo_picker_macro']);
      $map = array_merge($field_map, $map);
    }
  
    $map['behavior'] = array('autozoom' => TRUE);
    if (isset($field_map['zoom'])) {
      $map['maxzoom'] = $field_map['zoom'];
    }
    return theme('gmap', $map);
  }
}
?>