OpenLayers 3 API Documentation

Class: DoubleClickZoom

ol.interaction. DoubleClickZoom

experimental new ol.interaction.DoubleClickZoom(opt_options)

src/ol/interaction/doubleclickzoominteraction.js, line 20

Allows the user to zoom by double-clicking on the map.

Name Type Argument Description
options optional

Options.

Name Type Description
duration number | undefined

Animation duration in milliseconds. Default is 250.
delta number | undefined

The zoom delta applied on each double click, default is 1.
Fires:
  • change

Extends

Methods

experimental inherited dispatchChangeEvent()

src/ol/observable.js, line 39

Dispatches a change event. Register a listener for this event to get notified of changes.

Fires:
  • change

experimental inherited on(type, listener, opt_this){goog.events.Key}

src/ol/observable.js, line 61

Listen for a certain type of event.

Name Type Argument Description
type string | Array.<string>

The event type or array of event types.
listener function

The listener function.
this Object <optional>
 optional

The object to use as this in listener.
Returns:
key for the listener.

experimental inherited once(type, listener, opt_this){goog.events.Key}

src/ol/observable.js, line 74

Listen once for a certain type of event.

Name Type Argument Description
type string | Array.<string>

The event type or array of event types.
listener function

The listener function.
this Object <optional>
 optional

The object to use as this in listener.
Returns:
key for the listener.

experimental inherited un(type, listener, opt_this)

src/ol/observable.js, line 86

Unlisten for a certain type of event.

Name Type Argument Description
type string | Array.<string>

The event type or array of event types.
listener function

The listener function.
this Object <optional>
 optional

The object to use as this in listener.

experimental inherited unByKey(key)

src/ol/observable.js, line 96

Removes an event listener using the key returned by on() or once().

Name Type Description
key goog.events.Key

Key.