Add QR scanner support for macOS with camera selection

- Refactor QR scanner into separate Scanner module for iOS and macOS - Add camera selection menu for devices with multiple cameras - Use Vision framework for QR detection on macOS - Remove tvOS QR scanner support (continuity camera) - Add camera entitlement and usage description for macOS - Fix minor issues in Intents and ExtensionProvider
2026-01-01 18:18:03 +08:00
parent 251a79f5d7
commit e2c378d42b
15 changed files with 687 additions and 108 deletions
@@ -0,0 +1,127 @@
+#if !os(tvOS)
+
+    import AVFoundation
+    import Library
+    import SwiftUI
+
+    @MainActor
+    public struct QRScannerView: View {
+        @Environment(\.dismiss) private var dismiss
+        @State private var alert: AlertState?
+        @StateObject private var controller = QRScannerController()
+
+        private let onScan: (QRScanResult) -> Void
+
+        public init(onScan: @escaping (QRScanResult) -> Void) {
+            self.onScan = onScan
+        }
+
+        public var body: some View {
+            #if os(iOS)
+                iOSBody
+            #elseif os(macOS)
+                macOSBody
+            #endif
+        }
+
+        #if os(iOS)
+            private var iOSBody: some View {
+                NavigationStackCompat {
+                    QRScannerControllerView(controller: controller)
+                        .ignoresSafeArea()
+                        .navigationTitle("Scan QR Code")
+                        .navigationBarTitleDisplayMode(.inline)
+                        .toolbar {
+                            ToolbarItem(placement: .cancellationAction) {
+                                Button("Cancel") { dismiss() }
+                            }
+                            ToolbarItem(placement: .primaryAction) {
+                                Menu {
+                                    if controller.availableCameras.count > 1 {
+                                        Menu("Camera") {
+                                            ForEach(controller.availableCameras, id: \.uniqueID) { camera in
+                                                Button {
+                                                    controller.selectCamera(camera)
+                                                } label: {
+                                                    if camera.uniqueID == controller.selectedCamera?.uniqueID {
+                                                        Label(camera.localizedName, systemImage: "checkmark")
+                                                    } else {
+                                                        Text(camera.localizedName)
+                                                    }
+                                                }
+                                            }
+                                        }
+                                    }
+                                } label: {
+                                    Image(systemName: "ellipsis.circle")
+                                }
+                            }
+                        }
+                }
+                .alert($alert)
+                .onAppear {
+                    controller.onScan = handleScanResult
+                }
+            }
+        #endif
+
+        #if os(macOS)
+            private var macOSBody: some View {
+                VStack(spacing: 0) {
+                    QRScannerControllerView(controller: controller)
+                        .frame(minWidth: 400, minHeight: 300)
+
+                    Divider()
+
+                    HStack {
+                        if controller.availableCameras.count > 1 {
+                            Picker("Camera", selection: Binding(
+                                get: { controller.selectedCamera },
+                                set: { camera in
+                                    if let camera {
+                                        controller.selectCamera(camera)
+                                    }
+                                }
+                            )) {
+                                ForEach(controller.availableCameras, id: \.uniqueID) { camera in
+                                    Text(camera.localizedName).tag(camera as AVCaptureDevice?)
+                                }
+                            }
+                            .frame(maxWidth: 250)
+                        }
+                        Spacer()
+                        Button("Cancel") { dismiss() }
+                            .keyboardShortcut(.cancelAction)
+                    }
+                    .padding()
+                }
+                .alert($alert)
+                .onAppear {
+                    controller.onScan = handleScanResult
+                }
+            }
+        #endif
+
+        private func handleScanResult(_ result: Result<QRScanResult, QRScanError>) {
+            switch result {
+            case let .success(scanResult):
+                dismiss()
+                onScan(scanResult)
+            case let .failure(error):
+                switch error {
+                case .permissionDenied:
+                    alert = AlertState(
+                        title: String(localized: "Camera Access Denied"),
+                        message: String(localized: "Please enable camera access in Settings to scan QR codes.")
+                    )
+                default:
+                    alert = AlertState(
+                        title: String(localized: "Scanner Error"),
+                        message: error.localizedDescription
+                    )
+                }
+            }
+        }
+    }
+
+#endif