Juraldinio
107 lines
3.2 KiB
Swift
107 lines
3.2 KiB
Swift
//
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// CommonControllerQR.swift
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// Wallet
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//
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// Created by Igor Danich on 03.08.2020.
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// Copyright © 2020 List. All rights reserved.
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//
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import AVFoundation
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import UIKit
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import WalletFoundation
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final class ScannerViewController: UIViewController, AVCaptureMetadataOutputObjectsDelegate {
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typealias OnCaptureClosure = (String) -> Void
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private let session = AVCaptureSession()
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private var previewLayer: AVCaptureVideoPreviewLayer!
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var didCapture: OnCaptureClosure?
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override func viewDidLoad() {
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super.viewDidLoad()
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self.view.backgroundColor = Asset.snow.color
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guard let videoCaptureDevice = AVCaptureDevice.default(for: .video) else { return }
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let videoInput: AVCaptureDeviceInput
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do {
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videoInput = try AVCaptureDeviceInput(device: videoCaptureDevice)
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} catch {
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self.failed()
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return
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}
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if self.session.canAddInput(videoInput) {
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self.session.addInput(videoInput)
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} else {
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self.failed()
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return
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}
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let output = AVCaptureMetadataOutput()
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if self.session.canAddOutput(output) {
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self.session.addOutput(output)
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output.setMetadataObjectsDelegate(self, queue: .main)
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output.metadataObjectTypes = [.qr]
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} else {
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self.failed()
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return
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}
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self.previewLayer = AVCaptureVideoPreviewLayer(session: self.session)
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self.previewLayer.frame = self.view.bounds
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self.previewLayer.videoGravity = .resizeAspectFill
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self.view.layer.addSublayer(self.previewLayer)
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DispatchQueue.global(qos: .background).async { [weak self] in
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self?.session.startRunning()
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}
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}
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private func failed() {
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Alert.system(
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title: "Scanning not supported",
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text: "Your device does not support scanning a code from an item. Please use a device with a camera."
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)
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}
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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self.navigationController >>- {
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$0.navigationBar.backgroundColor = .clear
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$0.navigationBar.isTranslucent = true
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}
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if !self.session.isRunning {
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self.session.startRunning()
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}
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}
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override func viewWillDisappear(_ animated: Bool) {
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super.viewWillDisappear(animated)
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if self.session.isRunning {
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self.session.stopRunning()
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}
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}
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func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) {
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self.session.stopRunning()
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guard let string = (metadataObjects.first as? AVMetadataMachineReadableCodeObject)?.stringValue else { return }
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AudioServicesPlaySystemSound(SystemSoundID(kSystemSoundID_Vibrate))
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self.found(code: string)
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}
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private func found(code: String) {
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DispatchQueue.main.async { [weak self] in
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self?.didCapture?(code)
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}
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}
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override var prefersStatusBarHidden: Bool { true }
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override var supportedInterfaceOrientations: UIInterfaceOrientationMask { .portrait }
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}
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