class openlayers_behavior_layerzoom in Openlayers 7.2

Layer Zoom Behavior

Hierarchy

• class \openlayers_behavior
  • class \openlayers_behavior_layerzoom

File

plugins/behaviors/openlayers_behavior_layerzoom.inc, line 10

Implementation of OpenLayers behavior.

class openlayers_behavior_layerzoom extends openlayers_behavior {
  function options_form($defaults = array()) {
    $options = array();
    foreach ($this->map['layers'] as $layer) {
      if ($layer != $this->map['default_layer']) {
        $options[$layer] = array(
          'enable' => array(
            '#type' => 'checkbox',
            '#title' => t('Enable dynamic zoom levels for @layer', array(
              '@layer' => $layer,
            )),
            '#default_value' => isset($this->options[$layer]['enable']) ? $this->options[$layer]['enable'] : 0,
          ),
          'resolutions' => array(
            '#type' => 'select',
            '#multiple' => TRUE,
            '#options' => array_combine(array_map('strval', openlayers_get_resolutions('EPSG:900913')), range(0, 21)),
            '#title' => t('Zoom Level Range for @layer', array(
              '@layer' => $layer,
            )),
            '#default_value' => isset($this->options[$layer]['resolutions']) ? $this->options[$layer]['resolutions'] : array_map('strval', openlayers_get_resolutions('EPSG:900913')),
            '#description' => t('The zoom levels at which this layer will display.'),
          ),
        );
      }
    }
    return $options;
  }

  /**
   * Render.
   */
  function render(&$map) {
    drupal_add_js(drupal_get_path('module', 'openlayers') . '/plugins/behaviors/openlayers_behavior_layerzoom.js');
    return $this->options;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
openlayers_behavior::$options		property
openlayers_behavior::js_dependency		function		17
openlayers_behavior::options_init		function		27
openlayers_behavior::__construct		function
openlayers_behavior_layerzoom::options_form		function	Overrides openlayers_behavior::options_form
openlayers_behavior_layerzoom::render		function	Render. Overrides openlayers_behavior::render