File size: 2,304 Bytes
1e92f2d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 | const createHTMLMarker = (google) => {
class HTMLMarker extends google.maps.OverlayView {
constructor({
position,
map,
className,
anchor = {
x: 0,
y: 0,
},
}) {
super();
this.anchor = anchor;
this.subscriptions = [];
this.latLng = new google.maps.LatLng(position);
this.element = document.createElement('div');
this.element.className = className;
this.element.style.position = 'absolute';
// Force the "white-space" of the element will avoid the
// content to collapse when we move the map from center
this.element.style.whiteSpace = 'nowrap';
this.setMap(map);
}
onAdd() {
if (this.getPanes()) {
this.getPanes().overlayMouseTarget.appendChild(this.element);
}
}
draw() {
if (this.getProjection()) {
const position = this.getProjection().fromLatLngToDivPixel(this.latLng);
const offsetX = this.anchor.x + this.element.offsetWidth / 2;
const offsetY = this.anchor.y + this.element.offsetHeight;
this.element.style.left = `${Math.round(position.x - offsetX)}px`;
this.element.style.top = `${Math.round(position.y - offsetY)}px`;
// Markers to the south are in front of markers to the north
// This is the default behaviour of Google Maps
this.element.style.zIndex = parseInt(this.element.style.top, 10);
}
}
onRemove() {
if (this.element && this.element.parentNode) {
this.element.parentNode.removeChild(this.element);
this.subscriptions.forEach((subscription) => subscription.remove());
delete this.element;
this.subscriptions = [];
}
}
addListener(eventName, listener) {
const subscription = {
remove: () => {
this.element.removeEventListener(eventName, listener);
this.subscriptions = this.subscriptions.filter(
(_) => _ !== subscription
);
},
};
this.element.addEventListener(eventName, listener);
this.subscriptions = this.subscriptions.concat(subscription);
return subscription;
}
getPosition() {
return this.latLng;
}
}
return HTMLMarker;
};
export default createHTMLMarker;
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