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https://github.com/meshtastic/Meshtastic-Apple.git
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119 lines
3.3 KiB
Swift
119 lines
3.3 KiB
Swift
//
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// MapView.swift
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// MeshtasticClient
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//
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// Created by Joshua Pirihi on 22/12/21.
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//
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import Foundation
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import UIKit
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import MapKit
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import SwiftUI
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import CoreData
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// wrap a MKMapView into something we can use in SwiftUI
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struct MapView: UIViewRepresentable {
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var nodes: FetchedResults<NodeInfoEntity>
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weak var mapViewDelegate = MapViewDelegate()
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// observe changes to the key in UserDefaults
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@AppStorage("meshMapType") var type: String = "hybrid"
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func makeUIView(context: Context) -> MKMapView {
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let map = MKMapView(frame: .zero)
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map.userTrackingMode = .follow
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let region = MKCoordinateRegion( center: map.centerCoordinate, latitudinalMeters: CLLocationDistance(exactly: 500)!, longitudinalMeters: CLLocationDistance(exactly: 500)!)
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map.setRegion(map.regionThatFits(region), animated: false)
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// self.updateMapType(map)
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map.register(PositionAnnotationView.self, forAnnotationViewWithReuseIdentifier: NSStringFromClass(PositionAnnotationView.self))
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return map
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}
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func updateUIView(_ view: MKMapView, context: Context) {
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view.delegate = mapViewDelegate // (1) This should be set in makeUIView, but it is getting reset to `nil`
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view.translatesAutoresizingMaskIntoConstraints = false // (2) In the absence of this, we get constraints error on rotation; and again, it seems one should do this in makeUIView, but has to be here
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self.updateMapType(view)
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self.showNodePositions(to: view)
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}
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func updateMapType(_ map: MKMapView) {
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switch self.type {
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case "satellite":
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map.mapType = .satellite
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break
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case "standard":
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map.mapType = .standard
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break
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case "hybrid":
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map.mapType = .hybrid
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break
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default:
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map.mapType = .hybrid
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}
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}
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}
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private extension MapView {
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func showNodePositions(to view: MKMapView) {
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// clear any existing annotations
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if !view.annotations.isEmpty {
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view.removeAnnotations(view.annotations)
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}
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for node in self.nodes {
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// try and get the last position
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if (node.positions?.count ?? 0) > 0 && (node.positions!.lastObject as! PositionEntity).coordinate != nil {
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let annotation = PositionAnnotation()
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annotation.coordinate = (node.positions!.lastObject as! PositionEntity).coordinate!
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annotation.title = node.user?.longName ?? "Unknown"
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annotation.shortName = node.user?.shortName?.uppercased() ?? "???"
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view.addAnnotation(annotation)
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}
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}
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}
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}
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class MapViewDelegate: NSObject, MKMapViewDelegate {
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func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
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guard !annotation.isKind(of: MKUserLocation.self) else {
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// Make a fast exit if the annotation is the `MKUserLocation`, as it's not an annotation view we wish to customize.
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return nil
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}
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var annotationView: MKAnnotationView?
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if let annotation = annotation as? PositionAnnotation {
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annotationView = self.setupPositionAnnotationView(for: annotation, on: mapView)
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}
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return annotationView
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}
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private func setupPositionAnnotationView(for annotation: PositionAnnotation, on mapView: MKMapView) -> PositionAnnotationView {
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let identifier = NSStringFromClass(PositionAnnotationView.self)
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let annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: identifier) as? PositionAnnotationView ?? PositionAnnotationView()
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annotationView.name = annotation.shortName ?? "???"
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annotationView.canShowCallout = true
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return annotationView
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}
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}
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