Edit

Zoom Sliders

Default style

Placed between zoom controls

Horizontal and completely re-styled

Example of various ZoomSlider controls.

This example shows how to add a zoom slider to a map and how to customize it.

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index.html<!DOCTYPE html>
<html lang="en">
  <head>
    <title>Zoom Sliders</title>
    <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
    <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
    <style>
      .map {
        width: 100%;
        height:400px;
      }
      /**
       * The zoomslider in the second map shall be placed between the zoom-in and
       * zoom-out buttons.
       */
      #map2 .ol-zoom .ol-zoom-out {
        margin-top: 204px;
      }
      #map2 .ol-zoomslider {
        background-color: transparent;
        top: 2.3em;
      }

      #map2 .ol-touch .ol-zoom .ol-zoom-out {
        margin-top: 212px;
      }
      #map2 .ol-touch .ol-zoomslider {
        top: 2.75em;
      }

      #map2 .ol-zoom-in.ol-has-tooltip:hover [role=tooltip],
      #map2 .ol-zoom-in.ol-has-tooltip:focus [role=tooltip] {
        top: 3px;
      }

      #map2 .ol-zoom-out.ol-has-tooltip:hover [role=tooltip],
      #map2 .ol-zoom-out.ol-has-tooltip:focus [role=tooltip] {
        top: 232px;
      }

      /**
       * The zoomslider in the third map shall be horizontal, placed in the top-right
       * corner, smaller and orange.
       */
      #map3 .ol-zoomslider {
        top: 8px;
        left: auto;
        right: 8px;
        background-color: rgba(255,69,0,0.2);
        width: 200px;
        height: 15px;
        padding: 0;
        box-shadow: 0 0 5px rgb(255,69,0);
        border-radius: 20px;
      }

      #map3 .ol-zoomslider:hover {
        background-color: rgba(255,69,0,0.3);
      }

      #map3 .ol-zoomslider-thumb {
        height: 15px;
        width: 15px;
        margin: 0;
        filter: none;
        background-color: rgba(255,69,0,0.6);
        border-radius: 20px;
      }
      #map3 a.ol-zoomslider-handle:hover {
        background-color: rgba(255,69,0,0.7);
      }
    </style>
  </head>
  <body>
    <h4>Default style</h4>
    <div id="map1" class="map"></div>

    <h4>Placed between zoom controls</h4>
    <div id="map2" class="map"></div>

    <h4>Horizontal and completely re-styled</h4>
    <div id="map3" class="map"></div>
    <script src="index.js"></script>
  </body>
</html>
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index.jsimport 'ol/ol.css';
import Map from 'ol/Map';
import View from 'ol/View';
import {ZoomSlider} from 'ol/control';
import TileLayer from 'ol/layer/Tile';
import OSM from 'ol/source/OSM';


/**
 * Helper method for map-creation.
 *
 * @param {string} divId The id of the div for the map.
 * @return {Map} The map instance.
 */
function createMap(divId) {
  var source = new OSM();
  var layer = new TileLayer({
    source: source
  });
  var map = new Map({
    layers: [layer],
    target: divId,
    view: new View({
      center: [0, 0],
      zoom: 2
    })
  });
  var zoomslider = new ZoomSlider();
  map.addControl(zoomslider);
  return map;
}

var map1 = createMap('map1');
var map2 = createMap('map2');
var map3 = createMap('map3');
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package.json{
  "name": "zoomslider",
  "dependencies": {
    "ol": "6.1.1"
  },
  "devDependencies": {
    "parcel": "1.11.0"
  },
  "scripts": {
    "start": "parcel index.html",
    "build": "parcel build --experimental-scope-hoisting --public-url . index.html"
  }
}