Support rotation

[zenangst]

This PR adds rotation support for the CameraView.

It does this by changing the previewLayer.frame.size in viewWillTransitionToSize

Where the magic happens

CameraView.swift

  override func viewWillTransitionToSize(size: CGSize, withTransitionCoordinator coordinator: UIViewControllerTransitionCoordinator) {
    super.viewWillTransitionToSize(size, withTransitionCoordinator: coordinator)

    guard let previewLayer = self.previewLayer,
      connection = previewLayer.connection
      else { return }

    previewLayer.frame.size = size

    switch UIDevice.currentDevice().orientation {
    case .Portrait:
      connection.videoOrientation = .Portrait
    case .LandscapeLeft:
      connection.videoOrientation = .LandscapeRight
    case .LandscapeRight:
      connection.videoOrientation = .LandscapeLeft
    case .PortraitUpsideDown:
      connection.videoOrientation = .PortraitUpsideDown
    default:
      break
    }
  }

Other things fixed

• Remove duplicate constraint
• Move .addSubview from lazy methods to viewDidLoad

Screenshots

[RamonGilabert]

Oh nice. But don't you feel like it should be more like the camera? In terms of rotation. The normal camera when it rotates instead of putting the button at the bottom (which, in my opinion in an iPhone 4 would look bad), they rotate nothing but the views inside the container.

What do you think @vadymmarkov?

[zenangst]

Yeah that could be added, I didn't change any of the constraints. Just added support for rotation. We could add that in a different pull request but the iPhone 4 remark is a really good point.

[vadymmarkov]

👍