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GeolocateControl

React component that wraps maplibre-gl's GeolocateControl class.

import * as React from 'react';
import {Map, GeolocateControl} from 'react-map-gl/maplibre';
import 'maplibre-gl/dist/maplibre-gl.css';

function App() {
  return <Map
    initialViewState={{
      longitude: -100,
      latitude: 40,
      zoom: 3.5
    }}
    mapStyle="https://demotiles.maplibre.org/style.json"
  >
    <GeolocateControl />
  </Map>;
}

Properties​

Reactive Properties​

style: CSSProperties​

CSS style override that applies to the control's container.

Callbacks​

onGeolocate: (evt: GeolocateResultEvent) => void​

Called on each Geolocation API position update that returned as success.

onError: (evt: GeolocateErrorEvent) => void​

Called on each Geolocation API position update that returned as an error.

onOutOfMaxBounds: (evt: GeolocateResultEvent) => void​

Called on each Geolocation API position update that returned as success but user position is out of map maxBounds.

onTrackUserLocationStart: (evt: GeolocateEvent) => void​

Called when the GeolocateControl changes to the active lock state.

onTrackUserLocationEnd: (evt: GeolocateEvent) => void​

Called when the GeolocateControl changes to the background state.

Other Properties​

The properties in this section are not reactive. They are only used when the component first mounts.

Any options supported by the GeolocateControl class, such as

  • positionOptions
  • fitBoundsOptions
  • trackUserLocation
  • showAccuracyCircle
  • showUserLocation

Plus the following:

position: 'top-right' | 'top-left' | 'bottom-right' | 'bottom-left'​

Default: 'bottom-right'

Placement of the control relative to the map.

Methods​

The underlying native GeolocateControl instance is accessible via a React ref hook. You may use it to call any imperative methods:

import * as React from 'react';
import {useRef, useEffect} from 'react';
import {Map, GeolocateControl} from 'react-map-gl/maplibre';
import type maplibregl from 'maplibre-gl';

function App() {
  const geoControlRef = useRef<maplibregl.GeolocateControl>();

  useEffect(() => {
    // Activate as soon as the control is loaded
    geoControlRef.current?.trigger();
  }, [geoControlRef.current]);

  return <Map>
    <GeolocateControl ref={geoControlRef} />
  </Map>;
}

Source​

geolocate-control.ts