Custom previewLayer parent view

DemoSwiftyCam/DemoSwiftyCam/ViewController.swift

@@ -22,6 +22,13 @@ class ViewController: SwiftyCamViewController, SwiftyCamViewControllerDelegate {
     @IBOutlet weak var captureButton    : SwiftyRecordButton!
     @IBOutlet weak var flipCameraButton : UIButton!
     @IBOutlet weak var flashButton      : UIButton!
+
+	override func getPreviewViewParentView() -> UIView {
+		let view = UIView(frame: CGRect(origin: CGPoint.zero, size: CGSize(width: 300, height: 300)))
+		view.center = self.view.center
+		self.view.addSubview(view)
+		return view
+	}
 
 	override func viewDidLoad() {
 		super.viewDidLoad()
@@ -136,7 +143,7 @@ extension ViewController {
         let focusView = UIImageView(image: #imageLiteral(resourceName: "focus"))
         focusView.center = point
         focusView.alpha = 0.0
-        view.addSubview(focusView)
+		self.getPreviewViewParentView().addSubview(focusView)
 
         UIView.animate(withDuration: 0.25, delay: 0.0, options: .curveEaseInOut, animations: {
             focusView.alpha = 1.0

README.md

@@ -314,6 +314,20 @@ tapToFocus = false
 
 By default, `tapToFocus` is enabled. If you wish to show a on screen animation when a tap to focus is initiated, you can use the `SwiftyCamDidFocusAtPoint(focusPoint:)` to get the coordinates of tap and provide your own tap animation
 
+## Camera Display
+
+By default, SwiftyCam displays the capture session to fit the entire screen. If you wish to fit it to your own view:
+
+```swift
+class MyCameraViewController : SwiftyCamViewController, SwiftyCamViewControllerDelegate {
+
+    override func getPreviewViewParentView() -> UIView {
+        return customView
+    }
+    ...
+}
+```
+
 ## Device Orientation
 
 By default, SwiftyCam will set the photo orientation to be portrait. If you wish to preserve the orientation of the capture photos to allow support for landscape images, use the `shouldUseDeviceOrientation` property:

Source/SwiftyCamViewController.swift

@@ -298,15 +298,19 @@ open class SwiftyCamViewController: UIViewController {
     public var videoCodecType: AVVideoCodecType? = nil
 
 	// MARK: ViewDidLoad
-
+	
 	/// ViewDidLoad Implementation
+	open func getPreviewViewParentView() -> UIView {
+		return view
+	}
 
 	override open func viewDidLoad() {
 		super.viewDidLoad()
-        previewLayer = PreviewView(frame: view.frame, videoGravity: videoGravity)
-        previewLayer.center = view.center
-        view.addSubview(previewLayer)
-        view.sendSubviewToBack(previewLayer)
+        let previewParentView = self.getPreviewViewParentView()
+        previewLayer = PreviewView(frame: previewParentView.bounds, videoGravity: videoGravity)
+		previewLayer.center = CGPoint(x: previewParentView.bounds.midX, y: previewParentView.bounds.midY)
+        previewParentView.addSubview(previewLayer)
+        previewParentView.sendSubviewToBack(previewLayer)
 
 		// Add Gesture Recognizers
 
@@ -352,7 +356,7 @@ open class SwiftyCamViewController: UIViewController {
             layer.videoOrientation = .portrait
         }
 
-        previewLayer.frame = self.view.bounds
+        previewLayer.frame = self.getPreviewViewParentView().bounds
 
     }