Example of using the drag-and-drop interaction with image vector rendering.
Example of using the drag-and-drop interaction with an ol/layer/VectorImage
layer. Drag and drop GPX, GeoJSON, IGC, KML, or TopoJSON files on to the map. Each file is rendered to an image on the client.
import ImageTile from 'ol/source/ImageTile.js';
import Map from 'ol/Map.js';
import View from 'ol/View.js';
import {
DragAndDrop,
defaults as defaultInteractions,
} from 'ol/interaction.js';
import {GPX, GeoJSON, IGC, KML, TopoJSON} from 'ol/format.js';
import {
Tile as TileLayer,
VectorImage as VectorImageLayer,
} from 'ol/layer.js';
import {Vector as VectorSource} from 'ol/source.js';
const dragAndDropInteraction = new DragAndDrop({
formatConstructors: [GPX, GeoJSON, IGC, KML, TopoJSON],
});
const key = 'Get your own API key at https://www.maptiler.com/cloud/';
const attributions =
'<a href="https://www.maptiler.com/copyright/" target="_blank">© MapTiler</a> ' +
'<a href="https://www.openstreetmap.org/copyright" target="_blank">© OpenStreetMap contributors</a>';
const map = new Map({
interactions: defaultInteractions().extend([dragAndDropInteraction]),
layers: [
new TileLayer({
source: new ImageTile({
attributions: attributions,
url:
'https://api.maptiler.com/maps/satellite/{z}/{x}/{y}.jpg?key=' + key,
tileSize: 512,
maxZoom: 20,
}),
}),
],
target: 'map',
view: new View({
center: [0, 0],
zoom: 2,
}),
});
dragAndDropInteraction.on('addfeatures', function (event) {
const vectorSource = new VectorSource({
features: event.features,
});
map.addLayer(
new VectorImageLayer({
source: vectorSource,
}),
);
map.getView().fit(vectorSource.getExtent());
});
const displayFeatureInfo = function (pixel) {
const features = [];
map.forEachFeatureAtPixel(pixel, function (feature) {
features.push(feature);
});
if (features.length > 0) {
const info = [];
let i, ii;
for (i = 0, ii = features.length; i < ii; ++i) {
info.push(features[i].get('name'));
}
document.getElementById('info').innerHTML = info.join(', ') || ' ';
} else {
document.getElementById('info').innerHTML = ' ';
}
};
map.on('pointermove', function (evt) {
if (evt.dragging) {
return;
}
displayFeatureInfo(evt.pixel);
});
map.on('click', function (evt) {
displayFeatureInfo(evt.pixel);
});
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Drag-and-Drop Image Vector</title>
<link rel="stylesheet" href="node_modules/ol/ol.css">
<style>
.map {
width: 100%;
height: 400px;
}
</style>
</head>
<body>
<div id="map" class="map"></div>
<div id="info"> </div>
<script type="module" src="main.js"></script>
</body>
</html>
{
"name": "drag-and-drop-image-vector",
"dependencies": {
"ol": "10.3.1"
},
"devDependencies": {
"vite": "^3.2.3"
},
"scripts": {
"start": "vite",
"build": "vite build"
}
}