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| import {Feature, Map, Overlay, View} from 'ol/index.js';
import {OSM, Vector as VectorSource} from 'ol/source.js';
import {Point} from 'ol/geom.js';
import {Tile as TileLayer, Vector as VectorLayer} from 'ol/layer.js';
import {useGeographic} from 'ol/proj.js';
useGeographic();
const place = [-110, 45];
const point = new Point(place);
const map = new Map({
target: 'map',
view: new View({
center: place,
zoom: 8,
}),
layers: [
new TileLayer({
source: new OSM(),
}),
new VectorLayer({
source: new VectorSource({
features: [new Feature(point)],
}),
style: {
'circle-radius': 9,
'circle-fill-color': 'red',
},
}),
],
});
const element = document.getElementById('popup');
const popup = new Overlay({
element: element,
stopEvent: false,
});
map.addOverlay(popup);
function formatCoordinate(coordinate) {
return `
<table>
<tbody>
<tr><th>lon</th><td>${coordinate[0].toFixed(2)}</td></tr>
<tr><th>lat</th><td>${coordinate[1].toFixed(2)}</td></tr>
</tbody>
</table>`;
}
const info = document.getElementById('info');
map.on('moveend', function () {
const view = map.getView();
const center = view.getCenter();
info.innerHTML = formatCoordinate(center);
});
let popover;
map.on('click', function (event) {
if (popover) {
popover.dispose();
popover = undefined;
}
const feature = map.getFeaturesAtPixel(event.pixel)[0];
if (!feature) {
return;
}
const coordinate = feature.getGeometry().getCoordinates();
popup.setPosition([
coordinate[0] + Math.round(event.coordinate[0] / 360) * 360,
coordinate[1],
]);
popover = new bootstrap.Popover(element, {
container: element.parentElement,
content: formatCoordinate(coordinate),
html: true,
offset: [0, 20],
placement: 'top',
sanitize: false,
});
popover.show();
});
map.on('pointermove', function (event) {
const type = map.hasFeatureAtPixel(event.pixel) ? 'pointer' : 'inherit';
map.getViewport().style.cursor = type;
});
|
)
