Class DragZoom

Classdesc

Allows the user to zoom the map by clicking and dragging on the map, normally combined with an ol.events.condition that limits it to when a key, shift by default, is held down.

To change the style of the box, use CSS and the .ol-dragzoom selector, or your custom one configured with className.

Param: opt_options

Options.

Api

stable

Hierarchy

Constructors

constructor

Methods

changed dispatchEvent get getActive getGeometry getKeys getMap getProperties getRevision on once set setActive setProperties un unByKey unset handleEvent unByKey

Constructors

constructor

  • new DragZoom(opt_options?): DragZoom

  • Parameters

    Returns DragZoom

    Classdesc

    Allows the user to zoom the map by clicking and dragging on the map, normally combined with an ol.events.condition that limits it to when a key, shift by default, is held down.

    To change the style of the box, use CSS and the .ol-dragzoom selector, or your custom one configured with className.

    Api

    stable

Methods

changed

  • changed(): void

  • Increases the revision counter and dispatches a 'change' event.

    Returns void

    Api

dispatchEvent

  • dispatchEvent(event): void

  • Dispatches an event and calls all listeners listening for events of this type. The event parameter can either be a string or an Object with a type property.

    Parameters

    Returns void

    Function

    Api

get

  • get(key): any

  • Gets a value.

    Parameters

    • key: string

      Key name.

    Returns any

    Value.

    Api

    stable

getActive

  • getActive(): boolean

  • Return whether the interaction is currently active.

    Returns boolean

    true if the interaction is active, false otherwise.

    Observable

    Api

getGeometry

getKeys

  • getKeys(): string[]

  • Get a list of object property names.

    Returns string[]

    List of property names.

    Api

    stable

getMap

  • getMap(): Map

  • Get the map associated with this interaction.

    Returns Map

    Map.

    Api

getProperties

  • getProperties(): {
        [k: string]: any;
    }

  • Get an object of all property names and values.

    Returns {
        [k: string]: any;
    }

    Object.

    • [k: string]: any

    Api

    stable

getRevision

  • getRevision(): number

  • Get the version number for this object. Each time the object is modified, its version number will be incremented.

    Returns number

    Revision.

    Api

on

  • on(type, listener, opt_this?): Object | Object[]

  • Listen for a certain type of event.

    Parameters

    • type: string | string[]

      The event type or array of event types.

    • listener: Function

      The listener function.

    • Optional opt_this: Object

      The object to use as this in listener.

    Returns Object | Object[]

    Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.

    Api

    stable

once

  • once(type, listener, opt_this?): Object | Object[]

  • Listen once for a certain type of event.

    Parameters

    • type: string | string[]

      The event type or array of event types.

    • listener: Function

      The listener function.

    • Optional opt_this: Object

      The object to use as this in listener.

    Returns Object | Object[]

    Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.

    Api

    stable

set

  • set(key, value, opt_silent?): void

  • Sets a value.

    Parameters

    • key: string

      Key name.

    • value: any

      Value.

    • Optional opt_silent: boolean

      Update without triggering an event.

    Returns void

    Api

    stable

setActive

  • setActive(active): void

  • Activate or deactivate the interaction.

    Parameters

    • active: boolean

      Active.

    Returns void

    Observable

    Api

setProperties

  • setProperties(values, opt_silent?): void

  • Sets a collection of key-value pairs. Note that this changes any existing properties and adds new ones (it does not remove any existing properties).

    Parameters

    • values: {
          [k: string]: any;
      }

      Values.

      • [k: string]: any
    • Optional opt_silent: boolean

      Update without triggering an event.

    Returns void

    Api

    stable

un

  • un(type, listener, opt_this?): void

  • Unlisten for a certain type of event.

    Parameters

    • type: string | string[]

      The event type or array of event types.

    • listener: Function

      The listener function.

    • Optional opt_this: Object

      The object which was used as this by the listener.

    Returns void

    Api

    stable

unByKey

  • unByKey(key): void

  • Removes an event listener using the key returned by on() or once(). Note that using the ol.Observable.unByKey static function is to be preferred.

    Parameters

    • key: Object | Object[]

      The key returned by on() or once() (or an array of keys).

    Returns void

    Function

    Api

    stable

unset

  • unset(key, opt_silent?): void

  • Unsets a property.

    Parameters

    • key: string

      Key name.

    • Optional opt_silent: boolean

      Unset without triggering an event.

    Returns void

    Api

    stable

Static handleEvent

  • handleEvent(mapBrowserEvent): boolean

  • Handles the map browser event and may call into other functions, if event sequences like e.g. 'drag' or 'down-up' etc. are detected.

    Parameters

    Returns boolean

    false to stop event propagation.

    Api

Static unByKey

  • unByKey(key): void

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

    Parameters

    • key: Object | Object[]

      The key returned by on() or once() (or an array of keys).

    Returns void

    Api

    stable

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