CaptureView Example working with still image capture

Examples/Programmatic/CaptureView/CaptureView/Assets.xcassets/ic_photo_camera_white.imageset/Contents.json

+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "ic_photo_camera_white.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ic_photo_camera_white@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ic_photo_camera_white@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file

Examples/Programmatic/CaptureView/CaptureView/Assets.xcassets/ic_photo_camera_white_36pt.imageset/Contents.json

+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "ic_photo_camera_white_36pt.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ic_photo_camera_white_36pt@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "ic_photo_camera_white_36pt@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
\ No newline at end of file

Examples/Programmatic/CaptureView/CaptureView/ViewController.swift

@@ -19,7 +19,7 @@
 import UIKit
 import MaterialKit
 
-class ViewController: UIViewController {
+class ViewController: UIViewController, CaptureSessionDelegate {
 	private lazy var captureView: CaptureView = CaptureView()
 	
 	override func viewDidLoad() {
@@ -39,6 +39,11 @@ class ViewController: UIViewController {
 	:name:	prepareCaptureView
 	*/
 	private func prepareCaptureView() {
+		let navigationBarView: NavigationBarView = NavigationBarView()
+		navigationBarView.backgroundColor = MaterialColor.black.colorWithAlphaComponent(0.3)
+		navigationBarView.shadowDepth = .None
+		navigationBarView.statusBarStyle = .LightContent
+		
 		let img1: UIImage? = UIImage(named: "ic_flash_auto_white")
 		let btn1: FlatButton = FlatButton()
 		btn1.pulseColor = nil
@@ -51,14 +56,32 @@ class ViewController: UIViewController {
 		btn2.pulseColor = nil
 		btn2.setImage(img2, forState: .Normal)
 		btn2.setImage(img2, forState: .Highlighted)
+
+		let img3: UIImage? = UIImage(named: "ic_photo_camera_white_36pt")
+		let captureButton: FabButton = FabButton()
+		captureButton.backgroundColor = MaterialColor.grey.darken2
+		captureButton.borderWidth = .Border4
+		captureButton.borderColor = MaterialColor.white
+		captureButton.shadowDepth = .None
+		captureButton.setImage(img3, forState: .Normal)
+		captureButton.setImage(img3, forState: .Highlighted)
 		
+		captureView.captureSession.delegate = self
+		captureView.captureButton = captureButton
 		captureView.flashAutoButton = btn1
 		captureView.switchCamerasButton = btn2
-		captureView.navigationBarView.rightButtons = [btn1, btn2]
 		
 		view.addSubview(captureView)
 		captureView.translatesAutoresizingMaskIntoConstraints = false
 		MaterialLayout.alignToParent(view, child: captureView)
+		
+		view.addSubview(captureButton)
+		captureButton.translatesAutoresizingMaskIntoConstraints = false
+		MaterialLayout.alignFromBottomRight(view, child: captureButton, bottom: 24, right: (view.bounds.width - 72) / 2)
+		MaterialLayout.size(view, child: captureButton, width: 72, height: 72)
+		
+		view.addSubview(navigationBarView)
+		navigationBarView.rightButtons = [btn1, btn2]
 	}
 	
 	internal func handleFlash(sender: AnyObject) {
@@ -77,5 +100,17 @@ class ViewController: UIViewController {
 		captureView.flashAutoButton?.setImage(img, forState: .Normal)
 		captureView.flashAutoButton?.setImage(img, forState: .Highlighted)
 	}
+	
+	/**
+	:name:	captureSessionFailedWithError
+	*/
+	func captureSessionFailedWithError(capture: CaptureSession, error: NSError) {
+		print(error)
+	}
+	
+	func captureStillImageAsynchronously(capture: CaptureSession, image: UIImage?, error: NSError?) {
+		print(image)
+		print(error)
+	}
 }
 

Sources/CaptureSession.swift

@@ -41,6 +41,11 @@ public protocol CaptureSessionDelegate {
 	:name:	captureSessionFailedWithError
 	*/
 	optional func captureSessionFailedWithError(capture: CaptureSession, error: NSError)
+	
+	/**
+	:name:	captureStillImageAsynchronously
+	*/
+	optional func captureStillImageAsynchronously(capture: CaptureSession, image: UIImage?, error: NSError?)
 }
 
 @objc(CaptureSession)
@@ -244,6 +249,24 @@ public class CaptureSession : NSObject {
 	}
 	
 	/**
+	:name:	sessionPreset
+	*/
+	public var currentVideoOrientation: AVCaptureVideoOrientation {
+		var orientation: AVCaptureVideoOrientation
+		switch UIDevice.currentDevice().orientation {
+		case .Portrait:
+			orientation = .Portrait
+		case .LandscapeRight:
+			orientation = .LandscapeLeft
+		case .PortraitUpsideDown:
+			orientation = .PortraitUpsideDown
+		default:
+			orientation = .LandscapeRight
+		}
+		return orientation
+	}
+	
+	/**
 	:name:	delegate
 	*/
 	public weak var delegate: CaptureSessionDelegate?
@@ -420,6 +443,23 @@ public class CaptureSession : NSObject {
 	}
 	
 	/**
+	:name:	captureStillImage
+	*/
+	public func captureStillImage() {
+		let connection: AVCaptureConnection = imageOutput.connectionWithMediaType(AVMediaTypeVideo)
+		connection.videoOrientation = currentVideoOrientation
+		imageOutput.captureStillImageAsynchronouslyFromConnection(connection) { (sampleBuffer: CMSampleBuffer!, error: NSError!) -> Void in
+			if nil == error {
+				let data: NSData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(sampleBuffer)
+				self.delegate?.captureStillImageAsynchronously?(self, image: UIImage(data: data), error: nil)
+			} else {
+				self.delegate?.captureStillImageAsynchronously?(self, image: nil, error: error)
+			}
+			
+		}
+	}
+	
+	/**
 	:name:	prepareSession
 	*/
 	private func prepareSession() {

Sources/CaptureView.swift

@@ -35,16 +35,26 @@ public class CaptureView : MaterialView, CaptureSessionDelegate, CapturePreviewV
 	public private(set) lazy var exposureLayer: MaterialLayer = MaterialLayer()
 	
 	/**
-	:name:	navigationBarView
+	:name:	captureButton
 	*/
-	public private(set) lazy var navigationBarView: NavigationBarView = NavigationBarView()
+	public var captureButton: UIButton? {
+		didSet {
+			if let v: UIButton = captureButton {
+				v.removeTarget(self, action: "handleCapture:", forControlEvents: .TouchUpInside)
+				v.addTarget(self, action: "handleCapture:", forControlEvents: .TouchUpInside)
+			} else {
+				captureButton?.removeFromSuperview()
+				captureButton = nil
+			}
+		}
+	}
 	
 	/**
 	:name:	flashAutoButton
 	*/
-	public var flashAutoButton: MaterialButton? {
+	public var flashAutoButton: UIButton? {
 		didSet {
-			if let v: MaterialButton = flashAutoButton {
+			if let v: UIButton = flashAutoButton {
 				v.removeTarget(self, action: "handleFlashAuto:", forControlEvents: .TouchUpInside)
 				v.addTarget(self, action: "handleFlashAuto:", forControlEvents: .TouchUpInside)
 			} else {
@@ -57,9 +67,9 @@ public class CaptureView : MaterialView, CaptureSessionDelegate, CapturePreviewV
 	/**
 	:name:	switchCamerasButton
 	*/
-	public var switchCamerasButton: MaterialButton? {
+	public var switchCamerasButton: UIButton? {
 		didSet {
-			if let v: MaterialButton = switchCamerasButton {
+			if let v: UIButton = switchCamerasButton {
 				v.removeTarget(self, action: "handleSwitchCamera:", forControlEvents: .TouchUpInside)
 				v.addTarget(self, action: "handleSwitchCamera:", forControlEvents: .TouchUpInside)
 			} else {
@@ -97,6 +107,13 @@ public class CaptureView : MaterialView, CaptureSessionDelegate, CapturePreviewV
 	}
 	
 	/**
+	:name:	captureSession
+	*/
+	public var captureSession: CaptureSession {
+		return previewView.captureSession
+	}
+	
+	/**
 	:name:	init
 	*/
 	public convenience init() {
@@ -125,23 +142,6 @@ public class CaptureView : MaterialView, CaptureSessionDelegate, CapturePreviewV
 		
 		addSubview(previewView)
 		MaterialLayout.alignToParent(self, child: previewView)
-		
-		addSubview(navigationBarView)
-		
-//		var verticalFormat: String = "V:|"
-//		var views: Dictionary<String, AnyObject> = Dictionary<String, AnyObject>()
-//		var metrics: Dictionary<String, AnyObject> = Dictionary<String, AnyObject>()
-		
-//		if 0 < views.count {
-//			addConstraints(MaterialLayout.constraint(verticalFormat, options: [], metrics: metrics, views: views))
-//		}
-	}
-	
-	/**
-	:name:	captureSessionFailedWithError
-	*/
-	public func captureSessionFailedWithError(capture: CaptureSession, error: NSError) {
-		print(error)
 	}
 	
 	/**
@@ -194,23 +194,29 @@ public class CaptureView : MaterialView, CaptureSessionDelegate, CapturePreviewV
 	public override func prepareView() {
 		super.prepareView()
 		preparePreviewView()
-		prepareNavigationBarView()
 		prepareFocusLayer()
 		prepareExposureLayer()
 		reloadView()
 	}
 	
 	/**
+	:name:	handleCapture
+	*/
+	internal func handleCapture(button: UIButton) {
+		previewView.captureSession.captureStillImage()
+	}
+	
+	/**
 	:name:	handleSwitchCamera
 	*/
-	internal func handleSwitchCamera(button: MaterialButton) {
+	internal func handleSwitchCamera(button: UIButton) {
 		previewView.captureSession.switchCameras()
 	}
 	
 	/**
 	:name:	handleFlashAuto
 	*/
-	internal func handleFlashAuto(button: MaterialButton) {
+	internal func handleFlashAuto(button: UIButton) {
 		switch previewView.captureSession.flashMode {
 		case .Off:
 			previewView.captureSession.flashMode = .On
@@ -225,20 +231,10 @@ public class CaptureView : MaterialView, CaptureSessionDelegate, CapturePreviewV
 	}
 	
 	/**
-	:name:	prepareNavigationBarView
-	*/
-	private func prepareNavigationBarView() {
-		navigationBarView.backgroundColor = MaterialColor.black.colorWithAlphaComponent(0.3)
-		navigationBarView.shadowDepth = .None
-		navigationBarView.statusBarStyle = .LightContent
-	}
-	
-	/**
 	:name:	preparePreviewView
 	*/
 	private func preparePreviewView() {
 		previewView.translatesAutoresizingMaskIntoConstraints = false
-		previewView.captureSession.delegate = self
 		previewView.delegate = self
 		previewView.captureSession.startSession()
 	}