class openlayers_layer_type_xyz in Openlayers 7.2

OpenLayers XYZ Layer Type class

Hierarchy

• class \openlayers_layer_type
  • class \openlayers_layer_type_xyz

1 string reference to 'openlayers_layer_type_xyz'

_openlayers_openlayers_layers in includes/openlayers.layers.inc

Internal callback Helper function to return default layers.

File

plugins/layer_types/openlayers_layer_type_xyz.inc, line 11

XYZ Layer Type http://dev.openlayers.org/docs/files/OpenLayers/Layer/XYZ-js.html

class openlayers_layer_type_xyz extends openlayers_layer_type {

  /**
   * Provide initial values for options.
   */
  function options_init() {
    return array(
      'layer_handler' => 'xyz',
      'sphericalMercator' => TRUE,
      'wrapDateLine' => FALSE,
      'zoomOffset' => 0,
      'resolutions' => array_slice(openlayers_get_resolutions('EPSG:900913'), 0, 18),
    ) + parent::options_init();
  }

  /**
   * Options form which generates layers
   */
  function options_form($defaults = array()) {
    return array(
      'url' => array(
        '#type' => 'textarea',
        '#title' => t('Base URL (template)'),
        '#default_value' => !empty($this->data['url']) ? implode("\n", (array) $this->data['url']) : '',
        '#maxlength' => 2083,
        '#description' => t('This is the base URL template for the XYZ layer.  It should be something similar to <em>http://example.com/tiles/1.0.0/layer_name/${z}/${x}/${y}.png</em>.'),
      ),
      'serverResolutions' => array(
        '#type' => 'select',
        '#multiple' => TRUE,
        '#description' => t('Only set this if you need to request very specific resolutions from the server.'),
        '#options' => array_combine(array_map('strval', openlayers_get_resolutions('EPSG:900913')), range(0, 21)),
        '#title' => t('Server Zoom Level Range'),
        '#default_value' => isset($this->data['serverResolutions']) ? array_map('strval', $this->data['serverResolutions']) : array(),
      ),
      'resolutions' => array(
        '#type' => 'select',
        '#multiple' => TRUE,
        '#description' => t('Only set this if you need a very specific resolution.'),
        '#options' => array_combine(array_map('strval', openlayers_get_resolutions('EPSG:900913')), range(0, 21)),
        '#title' => t('Zoom Level Range'),
        '#default_value' => isset($this->data['resolutions']) ? array_map('strval', $this->data['resolutions']) : array(),
      ),
      'zoomOffset' => array(
        '#type' => 'select',
        '#description' => t('Zoom offset.'),
        '#options' => array_combine(range(0, 21), range(0, 21)),
        '#title' => t('Zoom offset'),
        '#default_value' => isset($this->data['zoomOffset']) ? $this->data['zoomOffset'] : array(),
      ),
      'wrapDateLine' => array(
        '#type' => 'checkbox',
        '#title' => t('Wrap Date Line'),
        '#default_value' => isset($this->data['wrapDateLine']) ? $this->data['wrapDateLine'] : FALSE,
        '#description' => t('This allows the user to continually pan left and right as the tiles will repeat themselves.  Note that this option is known to not work well with the 2.10 OL library.'),
      ),
    );
  }
  function options_form_validate($form, &$form_state) {
    $form_state['data']['url'] = explode("\n", $form_state['data']['url']);
    $form_state['data']['serverResolutions'] = array_map('floatval', array_values($form_state['data']['serverResolutions']));
    $form_state['data']['resolutions'] = array_map('floatval', array_values($form_state['data']['resolutions']));
    $form_state['data']['zoomOffset'] = (int) $form_state['data']['zoomOffset'];
  }

  /**
   * Render.
   */
  function render(&$map) {
    drupal_add_js(drupal_get_path('module', 'openlayers') . '/plugins/layer_types/openlayers_layer_type_xyz.js');
  }

}

Members

Name	Modifiers	Type	Description	Overrides
openlayers_layer_type::$data	public	property	Stores the options for this layer.
openlayers_layer_type::$map	public	property	Stores the current map.
openlayers_layer_type::getProjections	public	function
openlayers_layer_type::options_form_submit		function	Submit the options_form().	6
openlayers_layer_type::settings_form		function	Options form to configure layer-type-wide options.	3
openlayers_layer_type::__construct		function	Set configuration and store map.
openlayers_layer_type_xyz::options_form		function	Options form which generates layers Overrides openlayers_layer_type::options_form
openlayers_layer_type_xyz::options_form_validate		function	Validate the options_form(). Overrides openlayers_layer_type::options_form_validate
openlayers_layer_type_xyz::options_init		function	Provide initial values for options. Overrides openlayers_layer_type::options_init
openlayers_layer_type_xyz::render		function	Render. Overrides openlayers_layer_type::render