forked from MapComplete/MapComplete
84 lines
2.6 KiB
TypeScript
84 lines
2.6 KiB
TypeScript
import * as L from "leaflet"
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import {UIEventSource} from "../../Logic/UIEventSource";
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import Loc from "../../Models/Loc";
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import {UIElement} from "../UIElement";
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import BaseLayer from "../../Models/BaseLayer";
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export class Basemap {
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public readonly map: L.Map;
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constructor(leafletElementId: string,
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location: UIEventSource<Loc>,
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currentLayer: UIEventSource<BaseLayer>,
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lastClickLocation: UIEventSource<{ lat: number, lon: number }>,
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extraAttribution: UIElement) {
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this.map = L.map(leafletElementId, {
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center: [location.data.lat ?? 0, location.data.lon ?? 0],
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zoom: location.data.zoom ?? 2,
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layers: [currentLayer.data.layer],
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zoomControl: false
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});
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L.control.scale(
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{
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position: 'topright',
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}
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).addTo(this.map)
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// Users are not allowed to zoom to the 'copies' on the left and the right, stuff goes wrong then
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// We give a bit of leeway for people on the edges
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// Also see: https://www.reddit.com/r/openstreetmap/comments/ih4zzc/mapcomplete_a_new_easytouse_editor/g31ubyv/
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this.map.setMaxBounds(
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[[-100, -200], [100, 200]]
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);
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this.map.attributionControl.setPrefix(
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extraAttribution.Render() + " | <a href='https://osm.org'>OpenStreetMap</a>");
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const self = this;
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let previousLayer = currentLayer.data;
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currentLayer.addCallbackAndRun(layer => {
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if (layer === previousLayer) {
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return;
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}
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if (previousLayer !== undefined) {
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self.map.removeLayer(previousLayer.layer);
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}
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previousLayer = layer;
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self.map.addLayer(layer.layer);
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})
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this.map.on("moveend", function () {
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location.data.zoom = self.map.getZoom();
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location.data.lat = self.map.getCenter().lat;
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location.data.lon = self.map.getCenter().lng;
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location.ping();
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});
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location.map(loc => loc.zoom)
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.addCallback(zoom => {
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if (Math.abs(self.map.getZoom() - zoom) > 0.1) {
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self.map.setZoom(zoom, {});
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}
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})
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this.map.on("click", function (e) {
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// @ts-ignore
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lastClickLocation.setData({lat: e.latlng.lat, lon: e.latlng.lng})
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});
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this.map.on("contextmenu", function (e) {
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// @ts-ignore
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lastClickLocation.setData({lat: e.latlng.lat, lon: e.latlng.lng});
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});
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}
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}
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