tap to focus animation working

Source/BasicCaptureView.swift

@@ -18,13 +18,18 @@
 
 import UIKit
 
-public class BasicCaptureView : MaterialView, CaptureSessionDelegate {
+public class BasicCaptureView : MaterialView, CaptureSessionDelegate, CapturePreviewViewDelegate {
 	/**
 		:name:	previewView
 	*/
 	public private(set) lazy var previewView: CapturePreviewView = CapturePreviewView()
 	
 	/**
+		:name:	focusLayer
+	*/
+	public private(set) lazy var focusLayer: MaterialLayer = MaterialLayer()
+	
+	/**
 		:name:	switchCamerasButton
 	*/
 	public var switchCamerasButton: MaterialButton? {
@@ -66,20 +71,6 @@ public class BasicCaptureView : MaterialView, CaptureSessionDelegate {
 	/**
 		:name:	init
 	*/
-	public required init?(coder aDecoder: NSCoder) {
-		super.init(coder: aDecoder)
-	}
-	
-	/**
-		:name:	init
-	*/
-	public override init(frame: CGRect) {
-		super.init(frame: frame)
-	}
-	
-	/**
-		:name:	init
-	*/
 	public convenience init() {
 		self.init(frame: CGRectNull)
 	}
@@ -100,6 +91,7 @@ public class BasicCaptureView : MaterialView, CaptureSessionDelegate {
 	public override func prepareView() {
 		super.prepareView()
 		preparePreviewView()
+		prepareFocusLayer()
 		reloadView()
 	}
 	
@@ -140,6 +132,24 @@ public class BasicCaptureView : MaterialView, CaptureSessionDelegate {
 		print(error)
 	}
 	
+	/**
+		:name:	capturePreviewViewDidTapToFocusAtPoint
+	*/
+	public func capturePreviewViewDidTapToFocusAtPoint(capturePreviewView: CapturePreviewView, point: CGPoint) {
+		MaterialAnimation.animationDisabled {
+			self.focusLayer.position = point
+			self.focusLayer.hidden = false
+		}
+		MaterialAnimation.animateWithDuration(0.25, animations: {
+			self.focusLayer.transform = CATransform3DMakeScale(0, 0, 1)
+		}) {
+			MaterialAnimation.animationDisabled {
+				self.focusLayer.hidden = true
+				self.focusLayer.transform = CATransform3DIdentity
+			}
+		}
+	}
+	
 	//
 	//	:name:	handleSwitchCameras
 	//
@@ -153,6 +163,18 @@ public class BasicCaptureView : MaterialView, CaptureSessionDelegate {
 	private func preparePreviewView() {
 		previewView.translatesAutoresizingMaskIntoConstraints = false
 		previewView.captureSession.delegate = self
+		previewView.delegate = self
 		previewView.captureSession.startSession()
 	}
+	
+	//
+	//	:name:	prepareFocusLayer
+	//
+	private func prepareFocusLayer() {
+		focusLayer.hidden = true
+		focusLayer.backgroundColor = MaterialColor.white.colorWithAlphaComponent(0.25).CGColor
+		focusLayer.bounds = CGRectMake(0, 0, 150, 150)
+		focusLayer.cornerRadius = 75
+		previewView.layer.addSublayer(focusLayer)
+	}
 }
\ No newline at end of file

Source/CapturePreviewView.swift

@@ -19,7 +19,20 @@
 import UIKit
 import AVFoundation
 
-public class CapturePreviewView : MaterialView {
+@objc(CapturePreviewViewDelegate)
+public protocol CapturePreviewViewDelegate : MaterialDelegate {
+	/**
+		:name:	capturePreviewViewDidTapToFocusAtPoint
+	*/
+	optional func capturePreviewViewDidTapToFocusAtPoint(capturePreviewView: CapturePreviewView, point: CGPoint)
+}
+
+public class CapturePreviewView : MaterialView, UIGestureRecognizerDelegate {
+	//
+	//	:name:	tapToFocusGesture
+	//
+	private var tapToFocusGesture: UITapGestureRecognizer?
+	
 	/**
 		:name:	previewLayer
 	*/
@@ -31,6 +44,52 @@ public class CapturePreviewView : MaterialView {
 	public private(set) lazy var captureSession: CaptureSession = CaptureSession()
 	
 	/**
+		:name:	tapToFocusEnabled
+	*/
+	public var tapToFocusEnabled: Bool {
+		didSet {
+			if tapToFocusEnabled {
+				prepareTapGesture(&tapToFocusGesture, selector: "handleTapToFocusGesture:")
+			} else {
+				removeTapGesture(&tapToFocusGesture)
+			}
+		}
+	}
+	
+	/**
+		:name:	tapToExposeEnabled
+	*/
+	public var tapToExposeEnabled: Bool {
+		didSet {
+		}
+	}
+	
+	/**
+		:name:	init
+	*/
+	public required init?(coder aDecoder: NSCoder) {
+		tapToFocusEnabled = true
+		tapToExposeEnabled = true
+		super.init(coder: aDecoder)
+	}
+	
+	/**
+		:name:	init
+	*/
+	public override init(frame: CGRect) {
+		tapToFocusEnabled = true
+		tapToExposeEnabled = true
+		super.init(frame: frame)
+	}
+	
+	/**
+		:name:	init
+	*/
+	public convenience init() {
+		self.init(frame: CGRectNull)
+	}
+	
+	/**
 		:name:	layoutSublayersOfLayer
 	*/
 	public override func layoutSublayersOfLayer(layer: CALayer) {
@@ -46,6 +105,8 @@ public class CapturePreviewView : MaterialView {
 	public override func prepareView() {
 		super.prepareView()
 		preparePreviewLayer()
+		tapToFocusEnabled = true
+		tapToExposeEnabled = true
 	}
 	
 	/**
@@ -63,6 +124,17 @@ public class CapturePreviewView : MaterialView {
 	}
 	
 	//
+	//	:name:	handleTapToFocusGesture
+	//
+	internal func handleTapToFocusGesture(recognizer: UITapGestureRecognizer) {
+		if tapToFocusEnabled && captureSession.cameraSupportsTapToFocus {
+			let point: CGPoint = recognizer.locationInView(self)
+			captureSession.focusAtPoint(captureDevicePointOfInterestForPoint(point))
+			(delegate as? CapturePreviewViewDelegate)?.capturePreviewViewDidTapToFocusAtPoint?(self, point: point)
+		}
+	}
+	
+	//
 	//	:name:	preparePreviewLayer
 	//
 	private func preparePreviewLayer() {
@@ -73,9 +145,28 @@ public class CapturePreviewView : MaterialView {
 	//
 	//	:name:	layoutPreviewLayer
 	//
-	internal func layoutPreviewLayer() {
+	private func layoutPreviewLayer() {
 		previewLayer.frame = visualLayer.bounds
 		previewLayer.position = CGPointMake(width / 2, height / 2)
 		previewLayer.cornerRadius = visualLayer.cornerRadius
 	}
+	
+	//
+	//	:name:	prepareTapGesture
+	//
+	private func prepareTapGesture(inout gesture: UITapGestureRecognizer?, selector: Selector) {
+		gesture = UITapGestureRecognizer(target: self, action: selector)
+		gesture!.delegate = self
+		addGestureRecognizer(gesture!)
+	}
+	
+	//
+	//	:name:	removeTapToFocusGesture
+	//
+	private func removeTapGesture(inout gesture: UITapGestureRecognizer?) {
+		if let v: UIGestureRecognizer = gesture {
+			removeGestureRecognizer(v)
+			gesture = nil
+		}
+	}
 }
\ No newline at end of file

Source/CaptureSession.swift

@@ -124,10 +124,10 @@ public class CaptureSession : NSObject {
 	}
 	
 	/**
-		:name:	cameraSupportsTapToFocus
+		:name:	caneraSupportsTapToFocus
 	*/
 	public var cameraSupportsTapToFocus: Bool {
-		return true
+		return true == activeCamera?.focusPointOfInterestSupported
 	}
 	
 	/**
@@ -232,6 +232,29 @@ public class CaptureSession : NSObject {
 		return activeVideoInput!.device.isExposureModeSupported(exposureMode)
 	}
 	
+	/**
+		:name:	focusAtPoint
+	*/
+	public func focusAtPoint(point: CGPoint) {
+		var error: NSError?
+		let device: AVCaptureDevice = activeCamera!
+		if device.focusPointOfInterestSupported && isFocusModeSupported(.AutoFocus) {
+			do {
+				try device.lockForConfiguration()
+				device.focusPointOfInterest = point
+				device.focusMode = .AutoFocus
+				device.unlockForConfiguration()
+			} catch let e as NSError {
+				error = e
+			}
+		} else {
+			error = NSError(domain: "[MaterialKit Error: Unsupported focusAtPoint.]", code: 0, userInfo: nil)
+		}
+		if let e: NSError = error {
+			delegate?.captureSessionFailedWithError?(self, error: e)
+		}
+	}
+	
 	//
 	//	:name:	prepareSession
 	//

Source/MaterialButton.swift

@@ -394,10 +394,10 @@ public class MaterialButton : UIButton {
 			
 			if nil != pulseColor && 0 < pulseColorOpacity {
 				MaterialAnimation.animationDisabled {
-					self.pulseLayer.hidden = false
 					self.pulseLayer.bounds = CGRectMake(0, 0, v, v)
 					self.pulseLayer.position = point
 					self.pulseLayer.cornerRadius = r / d
+					self.pulseLayer.hidden = false
 				}
 				pulseLayer.addAnimation(MaterialAnimation.scale(pulseFill ? 3 * d : 1.5 * d, duration: t), forKey: nil)
 			}

Source/MaterialPulseView.swift

@@ -85,10 +85,10 @@ public class MaterialPulseView : MaterialView {
 			
 			if nil != pulseColor && 0 < pulseColorOpacity {
 				MaterialAnimation.animationDisabled {
-					self.pulseLayer.hidden = false
 					self.pulseLayer.bounds = CGRectMake(0, 0, v, v)
 					self.pulseLayer.position = point
 					self.pulseLayer.cornerRadius = r / d
+					self.pulseLayer.hidden = false
 				}
 				pulseLayer.addAnimation(MaterialAnimation.scale(pulseFill ? 3 * d : d, duration: t), forKey: nil)
 			}

Source/SideNavigationViewController.swift

@@ -87,17 +87,17 @@ public class SideNavigationViewController: UIViewController, UIGestureRecognizer
 	//
 	//	:name:	sidePanGesture
 	//
-	internal var sidePanGesture: UIPanGestureRecognizer?
+	private var sidePanGesture: UIPanGestureRecognizer?
 	
 	//
 	//	:name:	sideTapGesture
 	//
-	internal var sideTapGesture: UITapGestureRecognizer?
+	private var sideTapGesture: UITapGestureRecognizer?
 	
 	//
 	//	:name:	isViewBasedAppearance
 	//
-	internal var isViewBasedAppearance: Bool {
+	private var isViewBasedAppearance: Bool {
 		return 0 == NSBundle.mainBundle().objectForInfoDictionaryKey("UIViewControllerBasedStatusBarAppearance") as? Int
 	}
 	
@@ -334,22 +334,6 @@ public class SideNavigationViewController: UIViewController, UIGestureRecognizer
 		return false
 	}
 	
-	/**
-		:name:	prepareGestures
-	*/
-	private func prepareGestures(inout pan: UIPanGestureRecognizer?, panSelector: Selector, inout tap: UITapGestureRecognizer?, tapSelector: Selector) {
-		if nil == pan {
-			pan = UIPanGestureRecognizer(target: self, action: panSelector)
-			pan!.delegate = self
-			view.addGestureRecognizer(pan!)
-		}
-		if nil == tap {
-			tap = UITapGestureRecognizer(target: self, action: tapSelector)
-			tap!.delegate = self
-			view.addGestureRecognizer(tap!)
-		}
-	}
-	
 	//
 	//	:name:	prepareView
 	//
@@ -430,15 +414,31 @@ public class SideNavigationViewController: UIViewController, UIGestureRecognizer
 	}
 	
 	//
+	//	:name:	prepareGestures
+	//
+	private func prepareGestures(inout pan: UIPanGestureRecognizer?, panSelector: Selector, inout tap: UITapGestureRecognizer?, tapSelector: Selector) {
+		if nil == pan {
+			pan = UIPanGestureRecognizer(target: self, action: panSelector)
+			pan!.delegate = self
+			view.addGestureRecognizer(pan!)
+		}
+		if nil == tap {
+			tap = UITapGestureRecognizer(target: self, action: tapSelector)
+			tap!.delegate = self
+			view.addGestureRecognizer(tap!)
+		}
+	}
+	
+	//
 	//	:name:	removeGestures
 	//
 	private func removeGestures(inout pan: UIPanGestureRecognizer?, inout tap: UITapGestureRecognizer?) {
-		if let g = pan {
-			view.removeGestureRecognizer(g)
+		if let v: UIPanGestureRecognizer = pan {
+			view.removeGestureRecognizer(v)
 			pan = nil
 		}
-		if let g = tap {
-			view.removeGestureRecognizer(g)
+		if let v: UITapGestureRecognizer = tap {
+			view.removeGestureRecognizer(v)
 			tap = nil
 		}
 	}