forked from MapComplete/MapComplete
351 lines
14 KiB
TypeScript
351 lines
14 KiB
TypeScript
import { ReadonlyInputElement } from "./InputElement"
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import Loc from "../../Models/Loc"
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import { Store, UIEventSource } from "../../Logic/UIEventSource"
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import Minimap, { MinimapObj } from "../Base/Minimap"
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import BaseLayer from "../../Models/BaseLayer"
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import Combine from "../Base/Combine"
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import Svg from "../../Svg"
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import { GeoOperations } from "../../Logic/GeoOperations"
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import ShowDataMultiLayer from "../ShowDataLayer/ShowDataMultiLayer"
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import StaticFeatureSource from "../../Logic/FeatureSource/Sources/StaticFeatureSource"
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import LayerConfig from "../../Models/ThemeConfig/LayerConfig"
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import { BBox } from "../../Logic/BBox"
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import { FixedUiElement } from "../Base/FixedUiElement"
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import ShowDataLayer from "../ShowDataLayer/ShowDataLayer"
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import BaseUIElement from "../BaseUIElement"
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import Toggle from "./Toggle"
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import * as matchpoint from "../../assets/layers/matchpoint/matchpoint.json"
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import LayoutConfig from "../../Models/ThemeConfig/LayoutConfig"
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import FilteredLayer from "../../Models/FilteredLayer"
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import { ElementStorage } from "../../Logic/ElementStorage"
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import AvailableBaseLayers from "../../Logic/Actors/AvailableBaseLayers"
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import { RelationId, WayId } from "../../Models/OsmFeature"
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import { Feature, LineString, Polygon } from "geojson"
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import { OsmObject, OsmWay } from "../../Logic/Osm/OsmObject"
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export default class LocationInput
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extends BaseUIElement
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implements ReadonlyInputElement<Loc>, MinimapObj
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{
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private static readonly matchLayer = new LayerConfig(
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matchpoint,
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"LocationInput.matchpoint",
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true
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)
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public readonly snappedOnto: UIEventSource<Feature & { properties: { id: WayId } }> =
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new UIEventSource(undefined)
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public readonly _matching_layer: LayerConfig
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public readonly leafletMap: UIEventSource<any>
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public readonly bounds
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public readonly location
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private readonly _centerLocation: UIEventSource<Loc>
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private readonly mapBackground: UIEventSource<BaseLayer>
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/**
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* The features to which the input should be snapped
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* @private
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*/
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private readonly _snapTo: Store<
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(Feature<LineString | Polygon> & { properties: { id: WayId } })[]
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>
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/**
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* The features to which the input should be snapped without cleanup of relations and memberships
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* Used for rendering
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* @private
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*/
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private readonly _snapToRaw: Store<{ feature: Feature }[]>
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private readonly _value: Store<Loc>
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private readonly _snappedPoint: Store<any>
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private readonly _maxSnapDistance: number
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private readonly _snappedPointTags: any
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private readonly _bounds: UIEventSource<BBox>
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private readonly map: BaseUIElement & MinimapObj
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private readonly clickLocation: UIEventSource<Loc>
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private readonly _minZoom: number
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private readonly _state: {
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readonly filteredLayers: Store<FilteredLayer[]>
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readonly backgroundLayer: UIEventSource<BaseLayer>
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readonly layoutToUse: LayoutConfig
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readonly selectedElement: UIEventSource<any>
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readonly allElements: ElementStorage
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}
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/**
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* Given a list of geojson-features, will prepare these features to be snappable:
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* - points are removed
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* - LineStrings are passed as-is
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* - Multipolygons are decomposed into their member ways by downloading them
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*
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* @private
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*/
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private static async prepareSnapOnto(
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features: Feature[]
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): Promise<(Feature<LineString | Polygon> & { properties: { id: WayId } })[]> {
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const linesAndPolygon: Feature<LineString | Polygon>[] = <any>(
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features.filter((f) => f.geometry.type !== "Point")
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)
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// Clean the features: multipolygons are split into their it's members
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const linestrings: (Feature<LineString | Polygon> & { properties: { id: WayId } })[] = []
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for (const feature of linesAndPolygon) {
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if (feature.properties.id.startsWith("way")) {
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// A normal way - we continue
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linestrings.push(<any>feature)
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continue
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}
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// We have a multipolygon, thus: a relation
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// Download the members
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const relation = await OsmObject.DownloadObjectAsync(
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<RelationId>feature.properties.id,
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60 * 60
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)
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const members: OsmWay[] = await Promise.all(
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relation.members
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.filter((m) => m.type === "way")
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.map((m) => OsmObject.DownloadObjectAsync(<WayId>("way/" + m.ref), 60 * 60))
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)
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linestrings.push(...members.map((m) => m.asGeoJson()))
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}
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return linestrings
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}
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constructor(options?: {
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minZoom?: number
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mapBackground?: UIEventSource<BaseLayer>
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snapTo?: UIEventSource<{ feature: Feature }[]>
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renderLayerForSnappedPoint?: LayerConfig
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maxSnapDistance?: number
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snappedPointTags?: any
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requiresSnapping?: boolean
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centerLocation?: UIEventSource<Loc>
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bounds?: UIEventSource<BBox>
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state?: {
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readonly filteredLayers: Store<FilteredLayer[]>
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readonly backgroundLayer: UIEventSource<BaseLayer>
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readonly layoutToUse: LayoutConfig
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readonly selectedElement: UIEventSource<any>
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readonly allElements: ElementStorage
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}
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}) {
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super()
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this._snapToRaw = options?.snapTo?.map((feats) =>
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feats.filter((f) => f.feature.geometry.type !== "Point")
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)
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this._snapTo = options?.snapTo
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?.bind((features) =>
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UIEventSource.FromPromise(
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LocationInput.prepareSnapOnto(features.map((f) => f.feature))
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)
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)
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?.map((f) => f ?? [])
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this._maxSnapDistance = options?.maxSnapDistance
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this._centerLocation =
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options?.centerLocation ??
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new UIEventSource<Loc>({
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lat: 0,
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lon: 0,
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zoom: 0,
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})
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this._snappedPointTags = options?.snappedPointTags
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this._bounds = options?.bounds
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this._minZoom = options?.minZoom
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this._state = options?.state
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const self = this
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if (this._snapTo === undefined) {
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this._value = this._centerLocation
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} else {
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this._matching_layer = options?.renderLayerForSnappedPoint ?? LocationInput.matchLayer
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// Calculate the location of the point based by snapping it onto a way
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// As a side-effect, the actual snapped-onto way (if any) is saved into 'snappedOnto'
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this._snappedPoint = this._centerLocation.map(
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(loc) => {
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if (loc === undefined) {
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return undefined
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}
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// We reproject the location onto every 'snap-to-feature' and select the closest
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let min = undefined
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let matchedWay: Feature<LineString | Polygon> & { properties: { id: WayId } } =
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undefined
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for (const feature of self._snapTo.data ?? []) {
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try {
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const nearestPointOnLine = GeoOperations.nearestPoint(feature, [
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loc.lon,
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loc.lat,
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])
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if (min === undefined) {
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min = nearestPointOnLine
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matchedWay = feature
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continue
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}
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if (min.properties.dist > nearestPointOnLine.properties.dist) {
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min = nearestPointOnLine
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matchedWay = feature
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}
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} catch (e) {
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console.log(
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"Snapping to a nearest point failed for ",
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feature,
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"due to ",
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e
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)
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}
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}
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if (min === undefined || min.properties.dist * 1000 > self._maxSnapDistance) {
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if (options?.requiresSnapping) {
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return undefined
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} else {
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// No match found - the original coordinates are returned as is
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return {
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type: "Feature",
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properties: options?.snappedPointTags ?? min.properties,
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geometry: { type: "Point", coordinates: [loc.lon, loc.lat] },
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}
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}
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}
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min.properties = options?.snappedPointTags ?? min.properties
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self.snappedOnto.setData(<any>matchedWay)
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return min
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},
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[this._snapTo]
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)
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this._value = this._snappedPoint.map((f) => {
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const [lon, lat] = f.geometry.coordinates
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return {
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lon: lon,
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lat: lat,
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zoom: undefined,
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}
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})
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}
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this.mapBackground =
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options?.mapBackground ??
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this._state?.backgroundLayer ??
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new UIEventSource<BaseLayer>(AvailableBaseLayers.osmCarto)
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this.SetClass("block h-full")
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this.clickLocation = new UIEventSource<Loc>(undefined)
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this.map = Minimap.createMiniMap({
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location: this._centerLocation,
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background: this.mapBackground,
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attribution: this.mapBackground !== this._state?.backgroundLayer,
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lastClickLocation: this.clickLocation,
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bounds: this._bounds,
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addLayerControl: true,
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})
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this.leafletMap = this.map.leafletMap
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this.location = this.map.location
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}
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GetValue(): Store<Loc> {
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return this._value
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}
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IsValid(t: Loc): boolean {
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return t !== undefined
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}
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installBounds(factor: number | BBox, showRange?: boolean): void {
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this.map.installBounds(factor, showRange)
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}
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protected InnerConstructElement(): HTMLElement {
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try {
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const self = this
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const hasMoved = new UIEventSource(false)
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const startLocation = { ...this._centerLocation.data }
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this._centerLocation.addCallbackD((newLocation) => {
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const f = 100000
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const diff =
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Math.abs(newLocation.lon * f - startLocation.lon * f) +
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Math.abs(newLocation.lat * f - startLocation.lat * f)
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if (diff < 1) {
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return
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}
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hasMoved.setData(true)
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return true
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})
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this.clickLocation.addCallbackAndRunD((location) =>
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this._centerLocation.setData(location)
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)
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if (this._snapToRaw !== undefined) {
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// Show the lines to snap to
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new ShowDataMultiLayer({
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features: StaticFeatureSource.fromDateless(this._snapToRaw),
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zoomToFeatures: false,
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leafletMap: this.map.leafletMap,
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layers: this._state.filteredLayers,
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})
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// Show the central point
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const matchPoint = this._snappedPoint.map((loc) => {
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if (loc === undefined) {
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return []
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}
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return [{ feature: loc }]
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})
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// The 'matchlayer' is the layer which shows the target location
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new ShowDataLayer({
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features: StaticFeatureSource.fromDateless(matchPoint),
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zoomToFeatures: false,
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leafletMap: this.map.leafletMap,
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layerToShow: this._matching_layer,
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state: this._state,
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selectedElement: this._state.selectedElement,
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})
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}
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this.mapBackground.map(
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(layer) => {
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const leaflet = this.map.leafletMap.data
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if (leaflet === undefined || layer === undefined) {
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return
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}
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leaflet.setMaxZoom(layer.max_zoom)
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leaflet.setMinZoom(self._minZoom ?? layer.max_zoom - 2)
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leaflet.setZoom(layer.max_zoom - 1)
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},
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[this.map.leafletMap]
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)
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const animatedHand = Svg.hand_ui()
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.SetStyle("width: 2rem; height: unset;")
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.SetClass("hand-drag-animation block pointer-events-none")
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return new Combine([
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new Combine([
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Svg.move_arrows_ui()
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.SetClass("block relative pointer-events-none")
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.SetStyle("left: -2.5rem; top: -2.5rem; width: 5rem; height: 5rem"),
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])
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.SetClass("block w-0 h-0 z-10 relative")
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.SetStyle(
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"background: rgba(255, 128, 128, 0.21); left: 50%; top: 50%; opacity: 0.5"
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),
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new Toggle(undefined, animatedHand, hasMoved)
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.SetClass("block w-0 h-0 z-10 relative")
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.SetStyle("left: calc(50% + 3rem); top: calc(50% + 2rem); opacity: 0.7"),
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this.map.SetClass("z-0 relative block w-full h-full bg-gray-100"),
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]).ConstructElement()
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} catch (e) {
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console.error("Could not generate LocationInputElement:", e)
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return new FixedUiElement("Constructing a locationInput failed due to" + e)
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.SetClass("alert")
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.ConstructElement()
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}
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}
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TakeScreenshot(format: "image"): Promise<string>
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TakeScreenshot(format: "blob"): Promise<Blob>
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TakeScreenshot(format: "image" | "blob"): Promise<string | Blob>
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TakeScreenshot(format: "image" | "blob"): Promise<string | Blob> {
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return this.map.TakeScreenshot(format)
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}
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}
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