158 lines
5.5 KiB
Swift
158 lines
5.5 KiB
Swift
import UIKit
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import PlaygroundSupport
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import Mapbox
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let width: CGFloat = 700
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let height: CGFloat = 800
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class Responder: NSObject {
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var mapView: MGLMapView?
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@objc func togglePitch(sender: UISwitch) {
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let camera = mapView!.camera
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camera.pitch = sender.isOn ? 60 : 0
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mapView!.setCamera(camera, animated: false)
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}
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}
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//: A control panel
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let panelWidth: CGFloat = 200
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let panel = UIView(frame: CGRect(x: width - panelWidth, y: 0, width: 200, height: 100))
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panel.alpha = 0.8
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panel.backgroundColor = .white
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// Delete markers
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let deleteSwitchLabel = UILabel(frame: CGRect(x: 0, y: 0, width: 100, height: 30))
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deleteSwitchLabel.adjustsFontSizeToFitWidth = true
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deleteSwitchLabel.text = "Delete Markers"
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let deleteMarkerSwitchView = UISwitch(frame: CGRect(x: panelWidth - panelWidth / 2.0, y:0, width: 100, height: 50))
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panel.addSubview(deleteSwitchLabel)
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panel.addSubview(deleteMarkerSwitchView)
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// Hide markers
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let hideSwitchLabel = UILabel(frame: CGRect(x: 0, y: 30, width: 100, height: 30))
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hideSwitchLabel.adjustsFontSizeToFitWidth = true
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hideSwitchLabel.text = "Hide Markers"
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let hideMarkerSwitchView = UISwitch(frame: CGRect(x: panelWidth - panelWidth / 2.0, y: 30, width: 100, height: 50))
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panel.addSubview(hideSwitchLabel)
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panel.addSubview(hideMarkerSwitchView)
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// Pitch map
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let pitchLabel = UILabel(frame: CGRect(x: 0, y: 60, width: 100, height: 30))
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pitchLabel.text = "Pitch"
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let pitchSwitch = UISwitch(frame: CGRect(x: panelWidth-panelWidth / 2.0, y: 60, width: 100, height: 50))
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let responder = Responder()
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pitchSwitch.addTarget(responder, action: #selector(responder.togglePitch(sender:)), for: .valueChanged)
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panel.addSubview(pitchLabel)
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panel.addSubview(pitchSwitch)
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//: # Mapbox Maps
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/*:
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Put your access token into a plain text file called `token`. Then select the “token” placeholder below, go to Editor ‣ Insert File Literal, and select the `token` file.
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*/
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var accessToken = try String(contentsOfURL: <#token#>)
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MGLAccountManager.accessToken = accessToken
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class PlaygroundAnnotationView: MGLAnnotationView {
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override func prepareForReuse() {
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isHidden = hideMarkerSwitchView.isOn
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}
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}
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//: Define a map delegate
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class MapDelegate: NSObject, MGLMapViewDelegate {
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var annotationViewByAnnotation = [MGLPointAnnotation: PlaygroundAnnotationView]()
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func mapView(_ mapView: MGLMapView, viewFor annotation: MGLAnnotation) -> MGLAnnotationView? {
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var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: "annotation") as? PlaygroundAnnotationView
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if (annotationView == nil) {
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let av = PlaygroundAnnotationView(reuseIdentifier: "annotation")
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av.frame = CGRect(x: 0, y: 0, width: 30, height: 30)
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av.centerOffset = CGVector(dx: -15, dy: -15)
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let centerView = UIView(frame: av.bounds.insetBy(dx: 3, dy: 3))
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centerView.backgroundColor = .white
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av.addSubview(centerView)
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av.backgroundColor = .purple
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annotationView = av
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} else {
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annotationView!.subviews.first?.backgroundColor = .green
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}
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annotationViewByAnnotation[annotation as! MGLPointAnnotation] = annotationView
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return annotationView
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}
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func mapView(_ mapView: MGLMapView, didSelect annotation: MGLAnnotation) {
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let pointAnnotation = annotation as! MGLPointAnnotation
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let annotationView: PlaygroundAnnotationView = annotationViewByAnnotation[pointAnnotation]!
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for view in annotationViewByAnnotation.values {
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view.layer.zPosition = -1
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}
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annotationView.layer.zPosition = 1
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UIView.animate(withDuration: 1.25, delay: 0, usingSpringWithDamping: 0.4, initialSpringVelocity: 0.6, options: .curveEaseOut, animations: {
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annotationView.transform = CGAffineTransform(scaleX: 1.8, y: 1.8)
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}) { _ in
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annotationView.transform = CGAffineTransform(scaleX: 1, y: 1)
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if deleteMarkerSwitchView.isOn {
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mapView.removeAnnotation(pointAnnotation)
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return
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}
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if hideMarkerSwitchView.isOn {
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annotationView.isHidden = true
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}
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}
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}
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@objc func handleTap(press: UILongPressGestureRecognizer) {
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let mapView: MGLMapView = press.view as! MGLMapView
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let isRecognized = press.state == .recognized
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if (isRecognized) {
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let coordinate: CLLocationCoordinate2D = mapView.convert(press.location(in: mapView), toCoordinateFrom: mapView)
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let annotation = MGLPointAnnotation()
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annotation.title = "Dropped Marker"
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annotation.coordinate = coordinate
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mapView.addAnnotation(annotation)
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mapView.showAnnotations([annotation], animated: true)
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}
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}
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}
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//: Create a map and its delegate
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let centerCoordinate = CLLocationCoordinate2D(latitude: 37.174057, longitude: -104.490984)
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let mapView = MGLMapView(frame: CGRect(x: 0, y: 0, width: width, height: height))
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mapView.frame = CGRect(x: 0, y: 0, width: width, height: height)
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PlaygroundPage.current.liveView = mapView
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let mapDelegate = MapDelegate()
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mapView.delegate = mapDelegate
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responder.mapView = mapView
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let tapGesture = UILongPressGestureRecognizer(target: mapDelegate, action: #selector(mapDelegate.handleTap))
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mapView.addGestureRecognizer(tapGesture)
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//: Zoom in to a location
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mapView.setCenter(centerCoordinate, zoomLevel: 12, animated: false)
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//: Add control panel
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mapView.addSubview(panel)
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