mirror of
https://github.com/xweiba/location-spoofer.git
synced 2026-09-21 22:30:46 +08:00
320 lines
15 KiB
Swift
320 lines
15 KiB
Swift
import CoreLocation
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import Foundation
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import MapKit
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import SwiftUI
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import UIKit
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enum MapZoomMath {
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private static let minimumDelta = 0.000_05
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private static let maximumLatitudeDelta = 170.0
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private static let maximumLongitudeDelta = 360.0
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static func scaledSpan(_ span: MKCoordinateSpan, factor: Double) -> MKCoordinateSpan {
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guard factor.isFinite, factor > 0 else { return span }
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return MKCoordinateSpan(
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latitudeDelta: min(max(span.latitudeDelta * factor, minimumDelta), maximumLatitudeDelta),
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longitudeDelta: min(max(span.longitudeDelta * factor, minimumDelta), maximumLongitudeDelta)
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)
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}
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static func viewportScaleLabel(distanceMeters: CLLocationDistance) -> String {
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let meters = max(0, distanceMeters)
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if meters < 1_000 {
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return "\(Int(meters.rounded())) m"
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}
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let kilometers = meters / 1_000
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if kilometers < 10 {
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return String(format: "%.1f km", kilometers)
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}
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return "\(Int(kilometers.rounded())) km"
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}
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}
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struct MapViewRepresentable: UIViewRepresentable {
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let selection: MapSelection
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let cameraCommand: MapCameraCommand?
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let onRealtimeLocationChanged: (CLLocation) -> Void
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let onUserCenterChanged: (CLLocationCoordinate2D, CLLocationDistance) -> Void
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let onViewportChanged: (CLLocationDistance) -> Void
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let onMapTap: (CLLocationCoordinate2D) -> Void
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let onUserZoomChanged: ((CLLocationDistance) -> Void)?
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var onZoomIn: (() -> Void)?
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var onZoomOut: (() -> Void)?
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func makeCoordinator() -> Coordinator { Coordinator(parent: self) }
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func makeUIView(context: Context) -> MKMapView {
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let map = MKMapView()
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map.delegate = context.coordinator
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map.showsUserLocation = true
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let initialDistance = ViewportStore.loadOrDefault()
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map.setRegion(
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MKCoordinateRegion(
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center: selection.coordinate,
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latitudinalMeters: initialDistance,
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longitudinalMeters: initialDistance
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),
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animated: false
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)
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// Center pin — positioned relative to geographic center, not Auto Layout
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let pinSize: CGFloat = 38
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let sizeCfg = UIImage.SymbolConfiguration(pointSize: pinSize, weight: .semibold)
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let paletteCfg = UIImage.SymbolConfiguration(paletteColors: [.white, .red])
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let pinImage = UIImage(systemName: "mappin",
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withConfiguration: sizeCfg.applying(paletteCfg))
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let pin = UIImageView(image: pinImage)
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pin.frame = CGRect(x: 0, y: 0, width: pinSize, height: pinSize)
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pin.isUserInteractionEnabled = false
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pin.layer.shadowColor = UIColor.black.cgColor
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pin.layer.shadowOpacity = 0.28
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pin.layer.shadowRadius = 5
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pin.layer.shadowOffset = CGSize(width: 0, height: 3)
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map.addSubview(pin)
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context.coordinator.centerPin = pin
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// Zoom controls — UIKit subviews inside MKMapView, move with the map
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let zoomStack = UIStackView()
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zoomStack.axis = .vertical
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zoomStack.spacing = 0
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zoomStack.translatesAutoresizingMaskIntoConstraints = false
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zoomStack.alignment = .center
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zoomStack.backgroundColor = UIColor.systemBackground.withAlphaComponent(0.8)
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zoomStack.layer.cornerRadius = 13
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zoomStack.layer.shadowColor = UIColor.black.cgColor
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zoomStack.layer.shadowOpacity = 0.18
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zoomStack.layer.shadowRadius = 7
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zoomStack.layer.shadowOffset = CGSize(width: 0, height: 3)
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let zoomInBtn = UIButton(type: .system)
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zoomInBtn.setImage(UIImage(systemName: "plus", withConfiguration: UIImage.SymbolConfiguration(pointSize: 22, weight: .bold)), for: .normal)
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zoomInBtn.addTarget(context.coordinator, action: #selector(Coordinator.zoomInTapped), for: .touchUpInside)
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zoomInBtn.heightAnchor.constraint(equalToConstant: 52).isActive = true
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zoomInBtn.widthAnchor.constraint(equalToConstant: 52).isActive = true
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let zoomLabel = UILabel()
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let roundedDesc = UIFont.systemFont(ofSize: 9, weight: .semibold).fontDescriptor.withDesign(.rounded)
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zoomLabel.font = roundedDesc.flatMap { UIFont(descriptor: $0, size: 9) } ?? .systemFont(ofSize: 9, weight: .semibold)
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zoomLabel.textColor = .secondaryLabel
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zoomLabel.textAlignment = .center
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zoomLabel.adjustsFontSizeToFitWidth = true
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zoomLabel.minimumScaleFactor = 0.7
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zoomLabel.text = MapZoomMath.viewportScaleLabel(distanceMeters: ViewportStore.loadOrDefault())
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zoomLabel.heightAnchor.constraint(equalToConstant: 28).isActive = true
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context.coordinator.zoomLabel = zoomLabel
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let zoomOutBtn = UIButton(type: .system)
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zoomOutBtn.setImage(UIImage(systemName: "minus", withConfiguration: UIImage.SymbolConfiguration(pointSize: 22, weight: .bold)), for: .normal)
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zoomOutBtn.addTarget(context.coordinator, action: #selector(Coordinator.zoomOutTapped), for: .touchUpInside)
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zoomOutBtn.heightAnchor.constraint(equalToConstant: 52).isActive = true
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zoomOutBtn.widthAnchor.constraint(equalToConstant: 52).isActive = true
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let sep1 = UIView(); sep1.translatesAutoresizingMaskIntoConstraints = false
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sep1.heightAnchor.constraint(equalToConstant: 0.5).isActive = true
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sep1.backgroundColor = .separator
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sep1.widthAnchor.constraint(equalToConstant: 28).isActive = true
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let sep2 = UIView(); sep2.translatesAutoresizingMaskIntoConstraints = false
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sep2.heightAnchor.constraint(equalToConstant: 0.5).isActive = true
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sep2.backgroundColor = .separator
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sep2.widthAnchor.constraint(equalToConstant: 28).isActive = true
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zoomStack.addArrangedSubview(zoomInBtn)
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zoomStack.addArrangedSubview(sep1)
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zoomStack.addArrangedSubview(zoomLabel)
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zoomStack.addArrangedSubview(sep2)
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zoomStack.addArrangedSubview(zoomOutBtn)
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map.addSubview(zoomStack)
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NSLayoutConstraint.activate([
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zoomStack.leadingAnchor.constraint(equalTo: map.safeAreaLayoutGuide.leadingAnchor, constant: 16),
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zoomStack.topAnchor.constraint(equalTo: map.safeAreaLayoutGuide.topAnchor, constant: 130),
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])
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let tap = UITapGestureRecognizer(target: context.coordinator, action: #selector(Coordinator.handleTap(_:)))
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tap.cancelsTouchesInView = false
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map.addGestureRecognizer(tap)
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context.coordinator.map = map
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context.coordinator.setupKeyboardObservers()
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return map
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}
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func updateUIView(_ map: MKMapView, context: Context) {
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context.coordinator.parent = self
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context.coordinator.consume(cameraCommand, on: map)
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}
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final class Coordinator: NSObject, MKMapViewDelegate {
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var parent: MapViewRepresentable
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weak var map: MKMapView?
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private var lastConsumedCommandID: UInt64?
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private var activeCameraCommandID: UInt64?
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private var activeCommandIsZoom = false
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private var regionChangeWasUserDriven = false
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private var isPinchZoom = false
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weak var zoomLabel: UILabel?
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weak var centerPin: UIImageView?
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private let pinSize: CGFloat = 38
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// 蓝点实际大小从 MKUserLocationView 取，默认 20pt
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private var userDotDiameter: CGFloat = 20
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@objc func zoomInTapped() { parent.onZoomIn?() }
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@objc func zoomOutTapped() { parent.onZoomOut?() }
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init(parent: MapViewRepresentable) {
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self.parent = parent
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}
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private func updatePinPosition(on mapView: MKMapView) {
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guard let pin = centerPin else { return }
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let centerPt = mapView.convert(mapView.centerCoordinate, toPointTo: mapView)
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// pin 尖在底边，上移自身一半 + 蓝点半径对齐
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pin.center = CGPoint(
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x: centerPt.x,
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y: centerPt.y - pinSize / 2 + 5
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)
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}
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func setupKeyboardObservers() {
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let nc = NotificationCenter.default
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nc.addObserver(forName: UIResponder.keyboardWillShowNotification, object: nil, queue: .main) { [weak self] _ in
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guard let self, let map = self.map else { return }
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self.updatePinPosition(on: map)
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}
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nc.addObserver(forName: UIResponder.keyboardWillHideNotification, object: nil, queue: .main) { [weak self] _ in
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guard let self, let map = self.map else { return }
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self.updatePinPosition(on: map)
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}
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}
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func consume(_ command: MapCameraCommand?, on map: MKMapView) {
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guard let command, command.id != lastConsumedCommandID else { return }
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lastConsumedCommandID = command.id
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activeCameraCommandID = command.id
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activeCommandIsZoom = command.kind.isZoom
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regionChangeWasUserDriven = false
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map.userTrackingMode = .none
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let region: MKCoordinateRegion
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switch command.kind {
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case let .focus(coordinate, _):
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// 保持当前 span 不变，只移动中心点，避免 latitudinalMeters
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// 与 visibleVerticalDistance 之间因屏幕宽高比引入 2x 漂移
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region = MKCoordinateRegion(center: coordinate, span: map.region.span)
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case let .zoom(factor):
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region = MKCoordinateRegion(
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center: map.centerCoordinate,
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span: MapZoomMath.scaledSpan(map.region.span, factor: factor)
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)
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}
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map.setRegion(region, animated: true)
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}
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@objc func handleTap(_ gesture: UITapGestureRecognizer) {
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guard gesture.state == .ended, let map else { return }
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let point = gesture.location(in: map)
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parent.onMapTap(map.convert(point, toCoordinateFrom: map))
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}
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func mapView(_ mapView: MKMapView, didAdd views: [MKAnnotationView]) {
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for view in views where view.annotation is MKUserLocation {
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// 取蓝点实际大小，隐藏精度圈
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userDotDiameter = view.bounds.width
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for sub in view.subviews where sub.bounds.width > userDotDiameter + 4 {
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sub.isHidden = true
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}
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}
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}
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func mapView(_ mapView: MKMapView, didUpdate userLocation: MKUserLocation) {
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guard let location = userLocation.location,
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CLLocationCoordinate2DIsValid(location.coordinate),
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location.horizontalAccuracy >= 0 else { return }
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parent.onRealtimeLocationChanged(location)
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}
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func mapView(_ mapView: MKMapView, regionWillChangeAnimated animated: Bool) {
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let activeRecognizers = ([mapView as UIView] + mapView.subviews)
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.compactMap(\.gestureRecognizers)
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.flatMap { $0 }
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.filter { recognizer in
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recognizer.state == .began || recognizer.state == .changed
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}
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let hasActiveGesture = !activeRecognizers.isEmpty
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// Pinching updates the viewport/name granularity only. MapKit can
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// keep its pan recognizer active during a pinch, so only a pure pan
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// is allowed to replace the selected center coordinate.
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let hasActivePan = activeRecognizers.contains { $0 is UIPanGestureRecognizer }
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let hasActivePinch = activeRecognizers.contains { $0 is UIPinchGestureRecognizer }
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regionChangeWasUserDriven = hasActivePan && !hasActivePinch
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isPinchZoom = hasActivePinch
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if hasActiveGesture {
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activeCameraCommandID = nil
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activeCommandIsZoom = false
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}
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}
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func mapView(_ mapView: MKMapView, regionDidChangeAnimated animated: Bool) {
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let distance = visibleVerticalDistance(in: mapView)
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parent.onViewportChanged(distance)
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zoomLabel?.text = MapZoomMath.viewportScaleLabel(distanceMeters: distance)
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updatePinPosition(on: mapView)
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// 推算瓦片类型：比较地图中心与蓝点的偏移
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// 蓝点是 WGS-84，地图中心在 GCJ-02 瓦片上会有 ~596m 偏移
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let mc = mapView.centerCoordinate
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if let bl = mapView.userLocation.location?.coordinate {
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let wgs = CoordinateConverter.gcj02ToWgs84(lat: mc.latitude, lon: mc.longitude)
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let dGCJ = CoordinateConverter.distance(lat1: wgs.lat, lon1: wgs.lon, lat2: bl.latitude, lon2: bl.longitude)
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let dRaw = CoordinateConverter.distance(lat1: mc.latitude, lon1: mc.longitude, lat2: bl.latitude, lon2: bl.longitude)
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// GCJ→WGS 后更接近蓝点 = 地图是 GCJ-02；原始更接近 = 地图是 WGS-84
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let type: CoordinateConverter.CoordType = dGCJ < dRaw ? .gcj02 : .wgs84
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if type != CoordinateConverter.currentTileType {
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CoordinateConverter.currentTileType = type
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RuntimeLogger.info("APP", "坐标转换", "推算瓦片 → \(type.rawValue)", details: [
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"dGCJ": String(format: "%.0fm", dGCJ), "dRaw": String(format: "%.0fm", dRaw)
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])
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}
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} else {
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// 无蓝点，用坐标地理边界兜底
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CoordinateConverter.updateTileType(lat: mc.latitude, lon: mc.longitude)
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}
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// 同步蓝点坐标（避免 delegate 更新不及时导致 mapState.realtimeLocation 为 nil）
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if let ul = mapView.userLocation.location,
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CLLocationCoordinate2DIsValid(ul.coordinate), ul.horizontalAccuracy >= 0 {
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parent.onRealtimeLocationChanged(ul)
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}
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let userZoomed: Bool
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if activeCameraCommandID != nil {
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userZoomed = activeCommandIsZoom
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activeCameraCommandID = nil
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activeCommandIsZoom = false
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} else if isPinchZoom {
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userZoomed = true
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isPinchZoom = false
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} else {
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userZoomed = false
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}
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if userZoomed {
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parent.onUserZoomChanged?(distance)
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} else if regionChangeWasUserDriven {
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parent.onUserCenterChanged(mapView.centerCoordinate, distance)
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}
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regionChangeWasUserDriven = false
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}
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private func visibleVerticalDistance(in map: MKMapView) -> CLLocationDistance {
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let centerX = map.bounds.midX
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let north = map.convert(CGPoint(x: centerX, y: map.bounds.minY), toCoordinateFrom: map)
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let south = map.convert(CGPoint(x: centerX, y: map.bounds.maxY), toCoordinateFrom: map)
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let northLocation = CLLocation(latitude: north.latitude, longitude: north.longitude)
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let southLocation = CLLocation(latitude: south.latitude, longitude: south.longitude)
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let measured = northLocation.distance(from: southLocation)
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return measured.isFinite && measured > 0 ? measured : 1_000
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}
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}
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}
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