Replacing Default Controls

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TypeScript

declare global {
  interface Document {
    mozCancelFullScreen?: () => Promise<void>;
    msExitFullscreen?: () => Promise<void>;
    webkitExitFullscreen?: () => Promise<void>;
    mozFullScreenElement?: Element;
    msFullscreenElement?: Element;
    webkitFullscreenElement?: Element;
    onwebkitfullscreenchange?: any;
    onmsfullscreenchange?: any;
    onmozfullscreenchange?: any;
  }

  interface HTMLElement {
    msRequestFullScreen?: () => Promise<void>;
    mozRequestFullScreen?: () => Promise<void>;
    webkitRequestFullScreen?: () => Promise<void>;
  }
}

let map: google.maps.Map;

function initMap(): void {
  map = new google.maps.Map(document.querySelector("#map") as HTMLElement, {
    center: { lat: -34.397, lng: 150.644 },
    zoom: 8,
    disableDefaultUI: true,
  });

  initZoomControl(map);
  initMapTypeControl(map);
  initFullscreenControl(map);
}

function initZoomControl(map: google.maps.Map) {
  (document.querySelector(".zoom-control-in") as HTMLElement).onclick =
    function () {
      map.setZoom(map.getZoom()! + 1);
    };

  (document.querySelector(".zoom-control-out") as HTMLElement).onclick =
    function () {
      map.setZoom(map.getZoom()! - 1);
    };

  map.controls[google.maps.ControlPosition.RIGHT_BOTTOM].push(
    document.querySelector(".zoom-control") as HTMLElement
  );
}

function initMapTypeControl(map: google.maps.Map) {
  const mapTypeControlDiv = document.querySelector(
    ".maptype-control"
  ) as HTMLElement;

  (document.querySelector(".maptype-control-map") as HTMLElement).onclick =
    function () {
      mapTypeControlDiv.classList.add("maptype-control-is-map");
      mapTypeControlDiv.classList.remove("maptype-control-is-satellite");
      map.setMapTypeId("roadmap");
    };

  (
    document.querySelector(".maptype-control-satellite") as HTMLElement
  ).onclick = function () {
    mapTypeControlDiv.classList.remove("maptype-control-is-map");
    mapTypeControlDiv.classList.add("maptype-control-is-satellite");
    map.setMapTypeId("hybrid");
  };

  map.controls[google.maps.ControlPosition.LEFT_TOP].push(mapTypeControlDiv);
}

function initFullscreenControl(map: google.maps.Map) {
  const elementToSendFullscreen = map.getDiv().firstChild as HTMLElement;
  const fullscreenControl = document.querySelector(
    ".fullscreen-control"
  ) as HTMLElement;

  map.controls[google.maps.ControlPosition.RIGHT_TOP].push(fullscreenControl);

  fullscreenControl.onclick = function () {
    if (isFullscreen(elementToSendFullscreen)) {
      exitFullscreen();
    } else {
      requestFullscreen(elementToSendFullscreen);
    }
  };

  document.onwebkitfullscreenchange =
    document.onmsfullscreenchange =
    document.onmozfullscreenchange =
    document.onfullscreenchange =
      function () {
        if (isFullscreen(elementToSendFullscreen)) {
          fullscreenControl.classList.add("is-fullscreen");
        } else {
          fullscreenControl.classList.remove("is-fullscreen");
        }
      };
}

function isFullscreen(element: HTMLElement) {
  return (
    (document.fullscreenElement ||
      document.webkitFullscreenElement ||
      document.mozFullScreenElement ||
      document.msFullscreenElement) == element
  );
}

function requestFullscreen(element: HTMLElement) {
  if (element.requestFullscreen) {
    element.requestFullscreen();
  } else if (element.webkitRequestFullScreen) {
    element.webkitRequestFullScreen();
  } else if (element.mozRequestFullScreen) {
    element.mozRequestFullScreen();
  } else if (element.msRequestFullScreen) {
    element.msRequestFullScreen();
  }
}

function exitFullscreen() {
  if (document.exitFullscreen) {
    document.exitFullscreen();
  } else if (document.webkitExitFullscreen) {
    document.webkitExitFullscreen();
  } else if (document.mozCancelFullScreen) {
    document.mozCancelFullScreen();
  } else if (document.msExitFullscreen) {
    document.msExitFullscreen();
  }
}

declare global {
  interface Window {
    initMap: () => void;
  }
}
window.initMap = initMap;

JavaScript

let map;

function initMap() {
  map = new google.maps.Map(document.querySelector("#map"), {
    center: { lat: -34.397, lng: 150.644 },
    zoom: 8,
    disableDefaultUI: true,
  });
  initZoomControl(map);
  initMapTypeControl(map);
  initFullscreenControl(map);
}

function initZoomControl(map) {
  document.querySelector(".zoom-control-in").onclick = function () {
    map.setZoom(map.getZoom() + 1);
  };

  document.querySelector(".zoom-control-out").onclick = function () {
    map.setZoom(map.getZoom() - 1);
  };

  map.controls[google.maps.ControlPosition.RIGHT_BOTTOM].push(
    document.querySelector(".zoom-control")
  );
}

function initMapTypeControl(map) {
  const mapTypeControlDiv = document.querySelector(".maptype-control");

  document.querySelector(".maptype-control-map").onclick = function () {
    mapTypeControlDiv.classList.add("maptype-control-is-map");
    mapTypeControlDiv.classList.remove("maptype-control-is-satellite");
    map.setMapTypeId("roadmap");
  };

  document.querySelector(".maptype-control-satellite").onclick = function () {
    mapTypeControlDiv.classList.remove("maptype-control-is-map");
    mapTypeControlDiv.classList.add("maptype-control-is-satellite");
    map.setMapTypeId("hybrid");
  };

  map.controls[google.maps.ControlPosition.LEFT_TOP].push(mapTypeControlDiv);
}

function initFullscreenControl(map) {
  const elementToSendFullscreen = map.getDiv().firstChild;
  const fullscreenControl = document.querySelector(".fullscreen-control");

  map.controls[google.maps.ControlPosition.RIGHT_TOP].push(fullscreenControl);
  fullscreenControl.onclick = function () {
    if (isFullscreen(elementToSendFullscreen)) {
      exitFullscreen();
    } else {
      requestFullscreen(elementToSendFullscreen);
    }
  };

  document.onwebkitfullscreenchange =
    document.onmsfullscreenchange =
    document.onmozfullscreenchange =
    document.onfullscreenchange =
      function () {
        if (isFullscreen(elementToSendFullscreen)) {
          fullscreenControl.classList.add("is-fullscreen");
        } else {
          fullscreenControl.classList.remove("is-fullscreen");
        }
      };
}

function isFullscreen(element) {
  return (
    (document.fullscreenElement ||
      document.webkitFullscreenElement ||
      document.mozFullScreenElement ||
      document.msFullscreenElement) == element
  );
}

function requestFullscreen(element) {
  if (element.requestFullscreen) {
    element.requestFullscreen();
  } else if (element.webkitRequestFullScreen) {
    element.webkitRequestFullScreen();
  } else if (element.mozRequestFullScreen) {
    element.mozRequestFullScreen();
  } else if (element.msRequestFullScreen) {
    element.msRequestFullScreen();
  }
}

function exitFullscreen() {
  if (document.exitFullscreen) {
    document.exitFullscreen();
  } else if (document.webkitExitFullscreen) {
    document.webkitExitFullscreen();
  } else if (document.mozCancelFullScreen) {
    document.mozCancelFullScreen();
  } else if (document.msExitFullscreen) {
    document.msExitFullscreen();
  }
}

window.initMap = initMap;

CSS

/* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
#map {
  height: 100%;
}

/* Optional: Makes the sample page fill the window. */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

.gm-style .controls {
  font-size: 28px; /* this adjusts the size of all the controls */
  background-color: white;
  box-shadow: rgba(0, 0, 0, 0.3) 0px 1px 4px -1px;
  box-sizing: border-box;
  border-radius: 2px;
  cursor: pointer;
  font-weight: 300;
  height: 1em;
  margin: 6px;
  text-align: center;
  user-select: none;
  padding: 2px;
  width: 1em;
}

.gm-style .controls button {
  border: 0;
  background-color: white;
  color: rgba(0, 0, 0, 0.6);
}

.gm-style .controls button:hover {
  color: rgba(0, 0, 0, 0.9);
}

.gm-style .controls.zoom-control {
  display: flex;
  flex-direction: column;
  height: auto;
}

.gm-style .controls.zoom-control button {
  font: 0.85em Arial;
  margin: 1px;
  padding: 0;
}

.gm-style .controls.maptype-control {
  display: flex;
  flex-direction: row;
  width: auto;
}

.gm-style .controls.maptype-control button {
  display: inline-block;
  font-size: 0.5em;
  margin: 0 1px;
  padding: 0 6px;
}

.gm-style .controls.maptype-control.maptype-control-is-map .maptype-control-map {
  font-weight: 700;
}

.gm-style .controls.maptype-control.maptype-control-is-satellite .maptype-control-satellite {
  font-weight: 700;
}

.gm-style .controls.fullscreen-control button {
  display: block;
  font-size: 1em;
  height: 100%;
  width: 100%;
}

.gm-style .controls.fullscreen-control .fullscreen-control-icon {
  border-style: solid;
  height: 0.25em;
  position: absolute;
  width: 0.25em;
}

.gm-style .controls.fullscreen-control .fullscreen-control-icon.fullscreen-control-top-left {
  border-width: 2px 0 0 2px;
  left: 0.1em;
  top: 0.1em;
}

.gm-style .controls.fullscreen-control.is-fullscreen .fullscreen-control-icon.fullscreen-control-top-left {
  border-width: 0 2px 2px 0;
}

.gm-style .controls.fullscreen-control .fullscreen-control-icon.fullscreen-control-top-right {
  border-width: 2px 2px 0 0;
  right: 0.1em;
  top: 0.1em;
}

.gm-style .controls.fullscreen-control.is-fullscreen .fullscreen-control-icon.fullscreen-control-top-right {
  border-width: 0 0 2px 2px;
}

.gm-style .controls.fullscreen-control .fullscreen-control-icon.fullscreen-control-bottom-left {
  border-width: 0 0 2px 2px;
  left: 0.1em;
  bottom: 0.1em;
}

.gm-style .controls.fullscreen-control.is-fullscreen .fullscreen-control-icon.fullscreen-control-bottom-left {
  border-width: 2px 2px 0 0;
}

.gm-style .controls.fullscreen-control .fullscreen-control-icon.fullscreen-control-bottom-right {
  border-width: 0 2px 2px 0;
  right: 0.1em;
  bottom: 0.1em;
}

.gm-style .controls.fullscreen-control.is-fullscreen .fullscreen-control-icon.fullscreen-control-bottom-right {
  border-width: 2px 0 0 2px;
}

HTML

<html>
  <head>
    <title>Replacing Default Controls</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
  </head>
  <body>
    <div id="map"></div>
    <!-- Hide controls until they are moved into the map. -->
    <div style="display: none">
      <div class="controls zoom-control">
        <button class="zoom-control-in" title="Zoom In">+</button>
        <button class="zoom-control-out" title="Zoom Out">−</button>
      </div>
      <div class="controls maptype-control maptype-control-is-map">
        <button class="maptype-control-map" title="Show road map">Map</button>
        <button
          class="maptype-control-satellite"
          title="Show satellite imagery"
        >
          Satellite
        </button>
      </div>
      <div class="controls fullscreen-control">
        <button title="Toggle Fullscreen">
          <div
            class="fullscreen-control-icon fullscreen-control-top-left"
          ></div>
          <div
            class="fullscreen-control-icon fullscreen-control-top-right"
          ></div>
          <div
            class="fullscreen-control-icon fullscreen-control-bottom-left"
          ></div>
          <div
            class="fullscreen-control-icon fullscreen-control-bottom-right"
          ></div>
        </button>
      </div>
    </div>

    <!-- 
      The `defer` attribute causes the callback to execute after the full HTML
      document has been parsed. For non-blocking uses, avoiding race conditions,
      and consistent behavior across browsers, consider loading using Promises
      with https://www.npmjs.com/package/@googlemaps/js-api-loader.
      -->
    <script
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly"
      defer
    ></script>
  </body>
</html>

Try Sample

Clone Sample

Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application.

  git clone -b sample-control-replacement https://github.com/googlemaps/js-samples.git
  cd js-samples
  npm i
  npm start

Other samples can be tried by switching to any branch beginning with sample-SAMPLE_NAME.

  git checkout sample-SAMPLE_NAME
  npm i
  npm start