imported iOS git repo

ios/SAPTracker/ScanViewController.swift

@@ -0,0 +1,86 @@
+//
+//  QRCodeViewController.swift
+//  SAPTracker
+//
+//  Created by computing on 22/10/14.
+//  Copyright (c) 2014 com.sap.sailing. All rights reserved.
+//
+
+import UIKit
+import AVFoundation
+
+class ScanViewController: UIViewController, AVCaptureMetadataOutputObjectsDelegate, QRCodeManagerDelegate {
+    
+    @IBOutlet weak var previewView: UIView!
+    @IBOutlet weak var targetImageView: UIImageView!
+    
+    var activityIndicatorView: UIActivityIndicatorView!
+    private var session: AVCaptureSession!
+    private var previewLayer: AVCaptureVideoPreviewLayer!
+    private var qrCodeManager: QRCodeManager?
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        activityIndicatorView = UIActivityIndicatorView(activityIndicatorStyle: UIActivityIndicatorViewStyle.White)
+        activityIndicatorView.hidesWhenStopped = true
+        let barButton = UIBarButtonItem(customView: activityIndicatorView)
+        self.navigationItem.rightBarButtonItem = barButton
+        
+        qrCodeManager = QRCodeManager(delegate: self)
+        startScanning()
+    }
+    
+    /* Set up camera and QR code scanner */
+    @IBAction func startScanning() {
+        var output: AVCaptureMetadataOutput!
+        (session, output) = QRCodeManager.setUpCaptureSession(self)
+        output.metadataObjectTypes = [AVMetadataObjectTypeQRCode]
+        
+        previewLayer = AVCaptureVideoPreviewLayer(session: session)
+        previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
+        previewLayer.frame = previewView.bounds
+        previewLayer.position = CGPointMake(CGRectGetMidX(previewView.bounds), CGRectGetMidY(previewView.bounds))
+        previewView.layer.addSublayer(previewLayer)
+        
+        session.startRunning()
+        
+        targetImageView.image = UIImage(named: "scan_white")
+    }
+    
+    /* AVCaptureMetadataOutputObjectsDelegate. Parse scanned QR code */
+    func captureOutput(captureOutput: AVCaptureOutput!, didOutputMetadataObjects metadataObjects: [AnyObject]!, fromConnection connection: AVCaptureConnection!)
+    {
+        if metadataObjects.count > 0 {
+            targetImageView.image = UIImage(named: "scan_green")
+            session.stopRunning()
+            activityIndicatorView.startAnimating()
+            let metadataObject: AVMetadataMachineReadableCodeObject = metadataObjects[0] as AVMetadataMachineReadableCodeObject
+            qrCodeManager!.parseUrl(metadataObject.stringValue)
+        }
+    }
+    
+    override func willRotateToInterfaceOrientation(toInterfaceOrientation: UIInterfaceOrientation, duration: NSTimeInterval) {
+        if UIDevice.currentDevice().orientation == UIDeviceOrientation.LandscapeLeft {
+            previewLayer!.connection.videoOrientation = AVCaptureVideoOrientation.LandscapeRight
+        } else if UIDevice.currentDevice().orientation == UIDeviceOrientation.LandscapeRight {
+            previewLayer!.connection.videoOrientation = AVCaptureVideoOrientation.LandscapeLeft
+        } else {
+            previewLayer!.connection.videoOrientation = AVCaptureVideoOrientation.Portrait
+        }
+    }
+    
+    // MARK: - QRCodeManagerDelegate
+    
+    func qrCodeOK() {
+        // pop back to home view
+        navigationController!.popViewControllerAnimated(true)
+    }
+    
+    func qrCodeCancel() {
+        self.session.startRunning()
+        activityIndicatorView.stopAnimating()
+        targetImageView.image = UIImage(named: "scan_white")
+    }
+    
+}