ol-map

The core component of vue3-openlayers

This is the main container for all other vue3-openlayers components and has one default slot to place them all. Usually you will use it together with ol-view component to setup zoom, center, projection and other view related properties for the map.

• Demo
• Setup
  • Plugin usage
  • Explicit import
• Usage
• Properties
  • Props from OpenLayers
  • Deviating Properties
• Events
• Methods
• Show loading state

Demo

Setup

Plugin usage

This component is part of the Map plugin. If not installed globally, you need to import and use the plugin in your main.ts or use the explicit component import (see section below).

Import and use the Map plugin

import { createApp } from "vue";
import App from "./App.vue";

import {

  Map,
  Layers,
  Sources,
} from "vue3-openlayers";

const app = createApp(App);
// ...
app.use(Map); 
// ...

Explicit import

If you don't want to install a plugin, you can import the component explicitly. It's available as a child of the named export Map.

NOTE

The following documentation refers to the plugin usage. Please make sure to adopt the component names, when you decided to use explicit component imports (e. g. <ol-map> becomes <Map.OlMap> etc.).

Usage

Plugin Usage	Explicit Import
<ol-map>	<Map.OlMap>

Example of a simple map. See also documentation of ol-view component.

ViewDemo.vue

<template>
  <form>
    <label for="zoom">Zoom:</label>
    <input type="number" id="zoom" v-model="zoom" />
  </form>

  <ol-map style="height: 400px">
    <ol-view
      ref="view"
      :center="center"
      :rotation="rotation"
      :zoom="zoom"
      :projection="projection"
      @change:center="centerChanged"
      @change:resolution="resolutionChanged"
      @change:rotation="rotationChanged"
    />

    <ol-tile-layer>
      <ol-source-osm />
    </ol-tile-layer>

    <ol-rotate-control></ol-rotate-control>
    <ol-interaction-link />
  </ol-map>

  <ul>
    <li>center : {{ currentCenter }}</li>
    <li>resolution : {{ currentResolution }}</li>
    <li>zoom : {{ currentZoom }}</li>
    <li>rotation : {{ currentRotation }}</li>
  </ul>
</template>

<script setup>
import { ref } from "vue";

const center = ref([40, 40]);
const projection = ref("EPSG:4326");
const zoom = ref(8);
const rotation = ref(0);

const currentCenter = ref(center.value);
const currentZoom = ref(zoom.value);
const currentRotation = ref(rotation.value);
const currentResolution = ref(0);

function resolutionChanged(event) {
  currentResolution.value = event.target.getResolution();
  currentZoom.value = event.target.getZoom();
}
function centerChanged(event) {
  currentCenter.value = event.target.getCenter();
}
function rotationChanged(event) {
  currentRotation.value = event.target.getRotation();
}
</script>

<style scoped>
.ol-map {
  position: relative;
}
.ol-map-loading:after {
  content: "";
  box-sizing: border-box;
  position: absolute;
  top: 50%;
  left: 50%;
  width: 80px;
  height: 80px;
  margin-top: -40px;
  margin-left: -40px;
  border-radius: 50%;
  border: 5px solid rgba(180, 180, 180, 0.6);
  border-top-color: var(--vp-c-brand-1);
  animation: spinner 0.6s linear infinite;
}

@keyframes spinner {
  to {
    transform: rotate(360deg);
  }
}
</style>

Properties

Props from OpenLayers

Properties are passed-trough from OpenLayers directly. Their types and default values can be checked-out in the official OpenLayers docs. Only some properties deviate caused by reserved keywords from Vue / HTML. This deviating props are described in the section below.

Deviating Properties

None.

Events

You have access to all Events from the underlying source. Check out the official OpenLayers docs to see the available events tht will be fired.

<ol-map @error="handleEvent">
  <!-- ... -->
</ol-map>

Methods

You have access to all Methods from the underlying source. Check out the official OpenLayers docs to see the available methods.

To access the source, you can use a ref() as shown below:

<template>
  <!-- ... -->
  <ol-map ref="mapRef" @error="handleEvent">
    <!-- ... -->
  </ol-map>
  <!-- ... -->
</template>

<script setup lang="ts">
import { ref, onMounted } from "vue";
import type Map from "ol/Map";

const mapRef = ref<{ map: Map }>(null);

onMounted(() => {
  const map: Map = mapRef.value?.map;
  // call your method on `map`
});
</script>

Show loading state

When layers are loaded, you can show a loading indicator by styling the ol-map-loading class.