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MESSENGER-4093 scan permalinks as qr

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This commit is contained in:
Arnfried Griesert
2023-02-23 06:50:16 +00:00
committed by Frank Rotermund
parent 1bff461abb
commit eb618b395d
15 changed files with 325 additions and 127 deletions
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bwi/QRCode/AuthenticationServerSelectionQRCodeScanner.swift
-101
View File
@@ -16,8 +16,6 @@
*/
import SwiftUI
import UIKit
import AVFoundation
struct AuthenticationServerSelectionQRCodeScanner: View {
@Environment(\.presentationMode) var presentationMode
@@ -44,102 +42,3 @@ struct AuthenticationServerSelectionQRCodeScanner: View {
}
}
}
struct ScannerView: UIViewControllerRepresentable {
@Binding var qrCode: String
@Binding var scanCompleted: Bool
class Coordinator: NSObject, AVCaptureMetadataOutputObjectsDelegate {
var parent: ScannerView
init(_ parent: ScannerView) {
self.parent = parent
}
func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) {
if let metadataObject = metadataObjects.first {
guard let readableObject = metadataObject as? AVMetadataMachineReadableCodeObject else { return }
guard let stringValue = readableObject.stringValue else { return }
AudioServicesPlaySystemSound(SystemSoundID(kSystemSoundID_Vibrate))
DispatchQueue.main.async {
self.parent.qrCode = stringValue
self.parent.scanCompleted = true
}
}
}
}
func makeCoordinator() -> Coordinator {
Coordinator(self)
}
func makeUIViewController(context: Context) -> some ScannerViewController {
let controller = ScannerViewController()
controller.delegate = context.coordinator
return controller
}
func updateUIViewController(_ uiViewController: UIViewControllerType, context: Context) {
}
}
class ScannerViewController: UIViewController {
var captureSession: AVCaptureSession?
var previewLayer: AVCaptureVideoPreviewLayer!
let metadataOutput = AVCaptureMetadataOutput()
weak var delegate: AVCaptureMetadataOutputObjectsDelegate?
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = UIColor.black
captureSession = AVCaptureSession()
guard let videoCaptureDevice = AVCaptureDevice.default(for: .video), let videoInput = try? AVCaptureDeviceInput(device: videoCaptureDevice) else {
captureSession = nil
return
}
if let captureSession = captureSession {
guard captureSession.canAddInput(videoInput) && captureSession.canAddOutput(metadataOutput) else {
self.captureSession = nil
return
}
captureSession.addInput(videoInput)
captureSession.addOutput(metadataOutput)
metadataOutput.setMetadataObjectsDelegate(delegate, queue: .main)
metadataOutput.metadataObjectTypes = [.qr]
previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
previewLayer.frame = view.layer.bounds
previewLayer.videoGravity = .resizeAspectFill
view.layer.addSublayer(previewLayer)
}
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
let dispatchQueue = DispatchQueue(label: "AVCapturesession.startRunning", qos: .background)
dispatchQueue.async{
if (self.captureSession?.isRunning == false) {
self.captureSession?.startRunning()
}
}
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
let dispatchQueue = DispatchQueue(label: "AVCapturesession.stopRunning", qos: .background)
dispatchQueue.async{
if (self.captureSession?.isRunning == true) {
self.captureSession?.stopRunning()
}
}
}
}