forked from MapComplete/MapComplete
100 lines
3.6 KiB
Svelte
100 lines
3.6 KiB
Svelte
<script lang="ts">
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import type { SpecialVisualizationState } from "../SpecialVisualization";
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import LocationInput from "../InputElement/Helpers/LocationInput.svelte";
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import { UIEventSource } from "../../Logic/UIEventSource";
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import { Tiles } from "../../Models/TileRange";
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import { Map as MlMap } from "maplibre-gl";
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import { BBox } from "../../Logic/BBox";
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import type { MapProperties } from "../../Models/MapProperties";
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import ShowDataLayer from "../Map/ShowDataLayer";
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import type { FeatureSource, FeatureSourceForLayer } from "../../Logic/FeatureSource/FeatureSource";
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import SnappingFeatureSource from "../../Logic/FeatureSource/Sources/SnappingFeatureSource";
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import FeatureSourceMerger from "../../Logic/FeatureSource/Sources/FeatureSourceMerger";
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import LayerConfig from "../../Models/ThemeConfig/LayerConfig";
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import { Utils } from "../../Utils";
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/**
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* An advanced location input, which has support to:
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* - Show more layers
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* - Snap to layers
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*
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* This one is mostly used to insert new points
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*/
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export let state: SpecialVisualizationState;
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/**
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* The start coordinate
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*/
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export let coordinate: { lon: number, lat: number };
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export let snapToLayers: string[] | undefined;
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export let targetLayer: LayerConfig;
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export let maxSnapDistance: number = undefined;
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export let snappedTo: UIEventSource<string | undefined>;
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export let value: UIEventSource<{ lon: number, lat: number }>;
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if (value.data === undefined) {
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value.setData(coordinate);
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}
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let preciseLocation: UIEventSource<{ lon: number, lat: number }> = new UIEventSource<{ lon: number; lat: number }>(coordinate);
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const xyz = Tiles.embedded_tile(coordinate.lat, coordinate.lon, 16);
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const map: UIEventSource<MlMap> = new UIEventSource<MlMap>(undefined);
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let initialMapProperties: Partial<MapProperties> = {
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zoom: new UIEventSource<number>(19),
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maxbounds: new UIEventSource(undefined),
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/*If no snapping needed: the value is simply the map location;
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* If snapping is needed: the value will be set later on by the snapping feature source
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* */
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location: snapToLayers?.length > 0 ? new UIEventSource<{ lon: number; lat: number }>(coordinate) :value,
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bounds: new UIEventSource<BBox>(undefined),
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allowMoving: new UIEventSource<boolean>(true),
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allowZooming: new UIEventSource<boolean>(true),
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minzoom: new UIEventSource<number>(18)
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};
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initialMapProperties.bounds.addCallbackAndRunD((bounds: BBox) => {
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const max = bounds.pad(3).squarify();
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initialMapProperties.maxbounds.setData(max);
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return true; // unregister
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});
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if (snapToLayers?.length > 0) {
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const snapSources: FeatureSource[] = [];
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for (const layerId of (snapToLayers ?? [])) {
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const layer: FeatureSourceForLayer = state.perLayer.get(layerId);
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snapSources.push(layer);
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if (layer.features === undefined) {
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continue;
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}
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new ShowDataLayer(map, {
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layer: layer.layer.layerDef,
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zoomToFeatures: false,
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features: layer
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});
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}
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const snappedLocation = new SnappingFeatureSource(
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new FeatureSourceMerger(...Utils.NoNull(snapSources)),
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// We snap to the (constantly updating) map location
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initialMapProperties.location,
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{
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maxDistance: maxSnapDistance ?? 15,
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allowUnsnapped: true,
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snappedTo,
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snapLocation: value
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}
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);
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new ShowDataLayer(map, {
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layer: targetLayer,
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features: snappedLocation
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});
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}
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</script>
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<div class="w-full h-64">
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<LocationInput {map} mapProperties={initialMapProperties}
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value={preciseLocation}></LocationInput>
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</div>
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