344 lines
12 KiB
TypeScript
344 lines
12 KiB
TypeScript
import { Store, UIEventSource } from "../../Logic/UIEventSource"
|
|
import type { Map as MLMap } from "maplibre-gl"
|
|
import { Map as MlMap } from "maplibre-gl"
|
|
import { RasterLayerPolygon, RasterLayerProperties } from "../../Models/RasterLayers"
|
|
import { Utils } from "../../Utils"
|
|
import { BBox } from "../../Logic/BBox"
|
|
import { MapProperties } from "../../Models/MapProperties"
|
|
import SvelteUIElement from "../Base/SvelteUIElement"
|
|
import MaplibreMap from "./MaplibreMap.svelte"
|
|
|
|
/**
|
|
* The 'MapLibreAdaptor' bridges 'MapLibre' with the various properties of the `MapProperties`
|
|
*/
|
|
export class MapLibreAdaptor implements MapProperties {
|
|
private static maplibre_control_handlers = [
|
|
// "scrollZoom",
|
|
// "boxZoom",
|
|
// "doubleClickZoom",
|
|
"dragRotate",
|
|
"dragPan",
|
|
"keyboard",
|
|
"touchZoomRotate",
|
|
]
|
|
private static maplibre_zoom_handlers = [
|
|
"scrollZoom",
|
|
"boxZoom",
|
|
"doubleClickZoom",
|
|
"touchZoomRotate",
|
|
]
|
|
readonly location: UIEventSource<{ lon: number; lat: number }>
|
|
readonly zoom: UIEventSource<number>
|
|
readonly bounds: UIEventSource<BBox>
|
|
readonly rasterLayer: UIEventSource<RasterLayerPolygon | undefined>
|
|
readonly maxbounds: UIEventSource<BBox | undefined>
|
|
readonly allowMoving: UIEventSource<true | boolean | undefined>
|
|
readonly allowZooming: UIEventSource<true | boolean | undefined>
|
|
readonly lastClickLocation: Store<undefined | { lon: number; lat: number }>
|
|
readonly minzoom: UIEventSource<number>
|
|
private readonly _maplibreMap: Store<MLMap>
|
|
/**
|
|
* Used for internal bookkeeping (to remove a rasterLayer when done loading)
|
|
* @private
|
|
*/
|
|
private _currentRasterLayer: string
|
|
|
|
constructor(maplibreMap: Store<MLMap>, state?: Partial<MapProperties>) {
|
|
this._maplibreMap = maplibreMap
|
|
|
|
this.location = state?.location ?? new UIEventSource({ lon: 0, lat: 0 })
|
|
this.zoom = state?.zoom ?? new UIEventSource(1)
|
|
this.minzoom = state?.minzoom ?? new UIEventSource(0)
|
|
this.zoom.addCallbackAndRunD((z) => {
|
|
if (z < this.minzoom.data) {
|
|
this.zoom.setData(this.minzoom.data)
|
|
}
|
|
if (z > 24) {
|
|
this.zoom.setData(24)
|
|
}
|
|
})
|
|
this.maxbounds = state?.maxbounds ?? new UIEventSource(undefined)
|
|
this.allowMoving = state?.allowMoving ?? new UIEventSource(true)
|
|
this.allowZooming = state?.allowZooming ?? new UIEventSource(true)
|
|
this.bounds = state?.bounds ?? new UIEventSource(undefined)
|
|
this.rasterLayer =
|
|
state?.rasterLayer ?? new UIEventSource<RasterLayerPolygon | undefined>(undefined)
|
|
|
|
const lastClickLocation = new UIEventSource<{ lon: number; lat: number }>(undefined)
|
|
this.lastClickLocation = lastClickLocation
|
|
const self = this
|
|
maplibreMap.addCallbackAndRunD((map) => {
|
|
map.on("load", () => {
|
|
this.updateStores()
|
|
self.setBackground()
|
|
self.MoveMapToCurrentLoc(self.location.data)
|
|
self.SetZoom(self.zoom.data)
|
|
self.setMaxBounds(self.maxbounds.data)
|
|
self.setAllowMoving(self.allowMoving.data)
|
|
self.setAllowZooming(self.allowZooming.data)
|
|
self.setMinzoom(self.minzoom.data)
|
|
})
|
|
self.MoveMapToCurrentLoc(self.location.data)
|
|
self.SetZoom(self.zoom.data)
|
|
self.setMaxBounds(self.maxbounds.data)
|
|
self.setAllowMoving(self.allowMoving.data)
|
|
self.setAllowZooming(self.allowZooming.data)
|
|
self.setMinzoom(self.minzoom.data)
|
|
this.updateStores()
|
|
map.on("moveend", () => this.updateStores())
|
|
map.on("click", (e) => {
|
|
if (e.originalEvent["consumed"]) {
|
|
// Workaround, 'ShowPointLayer' sets this flag
|
|
return
|
|
}
|
|
const lon = e.lngLat.lng
|
|
const lat = e.lngLat.lat
|
|
lastClickLocation.setData({ lon, lat })
|
|
})
|
|
})
|
|
|
|
this.rasterLayer.addCallback((_) =>
|
|
self.setBackground().catch((_) => {
|
|
console.error("Could not set background")
|
|
})
|
|
)
|
|
|
|
this.location.addCallbackAndRunD((loc) => {
|
|
self.MoveMapToCurrentLoc(loc)
|
|
})
|
|
this.zoom.addCallbackAndRunD((z) => self.SetZoom(z))
|
|
this.maxbounds.addCallbackAndRun((bbox) => self.setMaxBounds(bbox))
|
|
this.allowMoving.addCallbackAndRun((allowMoving) => self.setAllowMoving(allowMoving))
|
|
this.allowZooming.addCallbackAndRun((allowZooming) => self.setAllowZooming(allowZooming))
|
|
this.bounds.addCallbackAndRunD((bounds) => self.setBounds(bounds))
|
|
}
|
|
|
|
private updateStores() {
|
|
const map = this._maplibreMap.data
|
|
if (map === undefined) {
|
|
return
|
|
}
|
|
const dt = this.location.data
|
|
dt.lon = map.getCenter().lng
|
|
dt.lat = map.getCenter().lat
|
|
this.location.ping()
|
|
this.zoom.setData(Math.round(map.getZoom() * 10) / 10)
|
|
const bounds = map.getBounds()
|
|
const bbox = new BBox([
|
|
[bounds.getEast(), bounds.getNorth()],
|
|
[bounds.getWest(), bounds.getSouth()],
|
|
])
|
|
this.bounds.setData(bbox)
|
|
}
|
|
/**
|
|
* Convenience constructor
|
|
*/
|
|
public static construct(): {
|
|
map: Store<MLMap>
|
|
ui: SvelteUIElement
|
|
mapproperties: MapProperties
|
|
} {
|
|
const mlmap = new UIEventSource<MlMap>(undefined)
|
|
return {
|
|
map: mlmap,
|
|
ui: new SvelteUIElement(MaplibreMap, {
|
|
map: mlmap,
|
|
}),
|
|
mapproperties: new MapLibreAdaptor(mlmap),
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Prepares an ELI-URL to be compatible with mapbox
|
|
*/
|
|
private static prepareWmsURL(url: string, size: number = 256) {
|
|
// ELI: LAYERS=OGWRGB13_15VL&STYLES=&FORMAT=image/jpeg&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap
|
|
// PROD: SERVICE=WMS&REQUEST=GetMap&LAYERS=OGWRGB13_15VL&STYLES=&FORMAT=image/jpeg&TRANSPARENT=false&VERSION=1.3.0&WIDTH=256&HEIGHT=256&CRS=EPSG:3857&BBOX=488585.4847988467,6590094.830634755,489196.9810251281,6590706.32686104
|
|
|
|
const toReplace = {
|
|
"{bbox}": "{bbox-epsg-3857}",
|
|
"{proj}": "EPSG:3857",
|
|
"{width}": "" + size,
|
|
"{height}": "" + size,
|
|
"{zoom}": "{z}",
|
|
}
|
|
|
|
for (const key in toReplace) {
|
|
url = url.replace(new RegExp(key), toReplace[key])
|
|
}
|
|
|
|
const subdomains = url.match(/\{switch:([a-zA-Z0-9,]*)}/)
|
|
if (subdomains !== null) {
|
|
const options = subdomains[1].split(",")
|
|
const option = options[Math.floor(Math.random() * options.length)]
|
|
url = url.replace(subdomains[0], option)
|
|
}
|
|
|
|
return url
|
|
}
|
|
|
|
private SetZoom(z: number) {
|
|
const map = this._maplibreMap.data
|
|
if (!map || z === undefined) {
|
|
return
|
|
}
|
|
if (Math.abs(map.getZoom() - z) > 0.01) {
|
|
map.setZoom(z)
|
|
}
|
|
}
|
|
|
|
private MoveMapToCurrentLoc(loc: { lat: number; lon: number }) {
|
|
const map = this._maplibreMap.data
|
|
if (!map || loc === undefined) {
|
|
return
|
|
}
|
|
|
|
const center = map.getCenter()
|
|
if (center.lng !== loc.lon || center.lat !== loc.lat) {
|
|
map.setCenter({ lng: loc.lon, lat: loc.lat })
|
|
}
|
|
}
|
|
|
|
private async awaitStyleIsLoaded(): Promise<void> {
|
|
const map = this._maplibreMap.data
|
|
if (map === undefined) {
|
|
return
|
|
}
|
|
while (!map?.isStyleLoaded()) {
|
|
await Utils.waitFor(250)
|
|
}
|
|
}
|
|
|
|
private removeCurrentLayer(map: MLMap) {
|
|
if (this._currentRasterLayer) {
|
|
// hide the previous layer
|
|
map.removeLayer(this._currentRasterLayer)
|
|
map.removeSource(this._currentRasterLayer)
|
|
}
|
|
}
|
|
|
|
private async setBackground() {
|
|
const map = this._maplibreMap.data
|
|
if (map === undefined) {
|
|
return
|
|
}
|
|
const background: RasterLayerProperties = this.rasterLayer?.data?.properties
|
|
if (background !== undefined && this._currentRasterLayer === background.id) {
|
|
// already the correct background layer, nothing to do
|
|
return
|
|
}
|
|
await this.awaitStyleIsLoaded()
|
|
|
|
if (background !== this.rasterLayer?.data?.properties) {
|
|
// User selected another background in the meantime... abort
|
|
return
|
|
}
|
|
|
|
if (background !== undefined && this._currentRasterLayer === background.id) {
|
|
// already the correct background layer, nothing to do
|
|
return
|
|
}
|
|
if (!background?.url) {
|
|
// no background to set
|
|
this.removeCurrentLayer(map)
|
|
this._currentRasterLayer = undefined
|
|
return
|
|
}
|
|
|
|
map.addSource(background.id, {
|
|
type: "raster",
|
|
// use the tiles option to specify a 256WMS tile source URL
|
|
// https://maplibre.org/maplibre-gl-js-docs/style-spec/sources/
|
|
tiles: [MapLibreAdaptor.prepareWmsURL(background.url, background["tile-size"] ?? 256)],
|
|
tileSize: background["tile-size"] ?? 256,
|
|
minzoom: background["min_zoom"] ?? 1,
|
|
maxzoom: background["max_zoom"] ?? 25,
|
|
// scheme: background["type"] === "tms" ? "tms" : "xyz",
|
|
})
|
|
|
|
map.addLayer(
|
|
{
|
|
id: background.id,
|
|
type: "raster",
|
|
source: background.id,
|
|
paint: {},
|
|
},
|
|
background.category === "osmbasedmap" || background.category === "map"
|
|
? undefined
|
|
: "aeroway_fill"
|
|
)
|
|
await this.awaitStyleIsLoaded()
|
|
this.removeCurrentLayer(map)
|
|
this._currentRasterLayer = background?.id
|
|
}
|
|
|
|
private setMaxBounds(bbox: undefined | BBox) {
|
|
const map = this._maplibreMap.data
|
|
if (map === undefined) {
|
|
return
|
|
}
|
|
if (bbox) {
|
|
map?.setMaxBounds(bbox.toLngLat())
|
|
} else {
|
|
map?.setMaxBounds(null)
|
|
}
|
|
}
|
|
|
|
private setAllowMoving(allow: true | boolean | undefined) {
|
|
const map = this._maplibreMap.data
|
|
if (map === undefined) {
|
|
return
|
|
}
|
|
if (allow === false) {
|
|
for (const id of MapLibreAdaptor.maplibre_control_handlers) {
|
|
map[id].disable()
|
|
}
|
|
} else {
|
|
for (const id of MapLibreAdaptor.maplibre_control_handlers) {
|
|
map[id].enable()
|
|
}
|
|
}
|
|
}
|
|
|
|
private setMinzoom(minzoom: number) {
|
|
const map = this._maplibreMap.data
|
|
if (map === undefined) {
|
|
return
|
|
}
|
|
map.setMinZoom(minzoom)
|
|
}
|
|
|
|
private setAllowZooming(allow: true | boolean | undefined) {
|
|
const map = this._maplibreMap.data
|
|
if (map === undefined) {
|
|
return
|
|
}
|
|
if (allow === false) {
|
|
for (const id of MapLibreAdaptor.maplibre_zoom_handlers) {
|
|
map[id].disable()
|
|
}
|
|
} else {
|
|
for (const id of MapLibreAdaptor.maplibre_zoom_handlers) {
|
|
map[id].enable()
|
|
}
|
|
}
|
|
}
|
|
|
|
private setBounds(bounds: BBox) {
|
|
const map = this._maplibreMap.data
|
|
if (map === undefined) {
|
|
return
|
|
}
|
|
const oldBounds = map.getBounds()
|
|
const e = 0.0000001
|
|
const hasDiff =
|
|
Math.abs(oldBounds.getWest() - bounds.getWest()) > e &&
|
|
Math.abs(oldBounds.getEast() - bounds.getEast()) > e &&
|
|
Math.abs(oldBounds.getNorth() - bounds.getNorth()) > e &&
|
|
Math.abs(oldBounds.getSouth() - bounds.getSouth()) > e
|
|
if (!hasDiff) {
|
|
return
|
|
}
|
|
map.fitBounds(bounds.toLngLat())
|
|
}
|
|
}
|