101 lines
2.8 KiB
TypeScript
101 lines
2.8 KiB
TypeScript
// app/admin/upload/_components/map/GeoPreview.tsx
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"use client";
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import React, { useEffect, useRef } from "react";
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import Map from "ol/Map";
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import View from "ol/View";
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import { Tile as TileLayer, Vector as VectorLayer } from "ol/layer";
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import { OSM } from "ol/source";
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import VectorSource from "ol/source/Vector";
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import WKT from "ol/format/WKT";
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import { Circle as CircleStyle, Fill, Stroke, Style } from "ol/style";
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import { fromLonLat } from "ol/proj";
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const GeoPreview = ({ features }: { features: any[] }) => {
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const mapRef = useRef<HTMLDivElement>(null);
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const mapObj = useRef<Map | null>(null);
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useEffect(() => {
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if (!features || features.length === 0 || !mapRef.current) return;
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// Bersihkan map lama jika ada re-render strict mode
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if (mapObj.current) {
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mapObj.current.setTarget(undefined);
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}
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const wktFormat = new WKT();
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const vectorSource = new VectorSource();
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features.forEach((item) => {
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try {
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const feature = wktFormat.readFeature(item.geometry, {
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dataProjection: `EPSG:4326`,
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featureProjection: "EPSG:3857",
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});
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vectorSource.addFeature(feature);
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} catch (err) {
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console.error("WKT parse error:", err);
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}
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});
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const vectorLayer = new VectorLayer({
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source: vectorSource,
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style: (feature) => {
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const type = feature.getGeometry()?.getType();
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if (type === "Polygon" || type === "MultiPolygon") {
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return new Style({
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fill: new Fill({ color: "rgba(0, 153, 255, 0.4)" }),
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stroke: new Stroke({ color: "#0099ff", width: 2 }),
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});
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}
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if (type === "LineString" || type === "MultiLineString") {
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return new Style({
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stroke: new Stroke({ color: "#0099ff", width: 3 }),
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});
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}
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if (type === "Point" || type === "MultiPoint") {
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return new Style({
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image: new CircleStyle({
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radius: 6,
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fill: new Fill({ color: "#0099ff" }),
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stroke: new Stroke({ color: "#ffffff", width: 2 }),
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}),
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});
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}
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},
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});
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mapObj.current = new Map({
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target: mapRef.current,
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layers: [
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new TileLayer({ source: new OSM() }),
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vectorLayer,
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],
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view: new View({
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center: fromLonLat([110, -6]),
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zoom: 5,
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}),
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});
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const extent = vectorSource.getExtent();
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if (extent && extent[0] !== Infinity) {
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mapObj.current.getView().fit(extent, {
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padding: [20, 20, 20, 20],
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});
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}
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return () => {
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if (mapObj.current) mapObj.current.setTarget(undefined);
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};
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}, [features]);
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return (
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<div
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ref={mapRef}
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style={{ width: "100%", height: "100%", minHeight: "400px", border: "1px solid #ccc", borderRadius: "8px" }}
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/>
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);
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};
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export default GeoPreview; |