Add snapshotter example to swiftui

Author: persidskiy

Apps/Examples/Examples/SwiftUI Examples/SnapshotMapExample.swift

@@ -1,28 +1,60 @@
 import SwiftUI
 import MapboxMaps
 
-@available(iOS 13.0, *)
+@available(iOS 14.0, *)
 struct SnapshotMapExample: View {
     @State var image: UIImage?
 
+    struct SnapshotterImage: Identifiable {
+        var id: ObjectIdentifier { ObjectIdentifier(image) }
+        let image: UIImage
+    }
+    @State var snapshotterImage: SnapshotterImage?
+    @State var snapshotter = Snapshotter(options: MapSnapshotOptions(size: CGSize(width: 512, height: 512), pixelRatio: 2.0))
+
     var body: some View {
         GeometryReader { geometry in
             VStack(spacing: 10) {
                 MapReader { proxy in
                     Map(initialViewport: .helsinkiOverview)
                         .mapStyle(.outdoors)
                         .onMapIdle { _ in image = proxy.captureSnapshot() }
+                        .onCameraChanged { event in
+                            snapshotter.setCamera(to: CameraOptions(cameraState: event.cameraState))
+                        }
                         .frame(height: geometry.size.height / 2)
                 }
 
                 SnapshotView(snapshot: image)
                     .frame(height: geometry.size.height / 2)
             }
         }
+        .ignoresSafeArea()
+        .safeOverlay(alignment: .bottom) {
+            Button("Make snapshot via Snapshotter") {
+                snapshotter.start(overlayHandler: nil) { result in
+                    switch result {
+                        case .success(let image):
+                        self.snapshotterImage = SnapshotterImage(image: image)
+                    case .failure(let error):
+                        print("Failure: \(error)")
+                    }
+                }
+            }
+            .floating()
+        }
+        .onAppear {
+            snapshotter.mapStyle = .standardSatellite
+        }
+        .sheet(item: $snapshotterImage) {
+            Image(uiImage: $0.image)
+                .resizable()
+                .scaledToFit()
+        }
     }
 }
 
-@available(iOS 13.0, *)
+@available(iOS 14.0, *)
 struct SnapshotView: View {
     var snapshot: UIImage?
 
@@ -40,7 +72,7 @@ private extension Viewport {
     static let helsinkiOverview = Self.overview(geometry: Polygon(center: .helsinki, radius: 10000, vertices: 30))
 }
 
-@available(iOS 13.0, *)
+@available(iOS 14.0, *)
 struct SnapshotMapExample_Preview: PreviewProvider {
     static var previews: some View {
         SnapshotMapExample()