147 lines
4.1 KiB
Swift
147 lines
4.1 KiB
Swift
//
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// CameraController.swift
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// CapFinder
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//
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// Created by User on 22.02.18.
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// Copyright © 2018 User. All rights reserved.
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//
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import UIKit
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protocol CameraControllerDelegate {
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func didCapture(image: UIImage)
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func didCancel()
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}
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class CameraController: UIViewController {
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// MARK: Outlets
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@IBOutlet weak var imageButton: UIButton!
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@IBOutlet weak var cropView: CropView!
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@IBOutlet weak var cancelButton: UIButton!
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@IBOutlet weak var cameraView: CameraView! {
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didSet {
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cameraView.configure()
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}
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}
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var delegate: CameraControllerDelegate?
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override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
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return .portrait
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}
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override var preferredInterfaceOrientationForPresentation: UIInterfaceOrientation {
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return .portrait
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}
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override var shouldAutorotate: Bool {
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return false
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}
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// MARK: Actions
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@IBAction func backButtonPressed() {
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self.giveFeedback(.medium)
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delegate?.didCancel()
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self.dismiss(animated: true)
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}
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@IBAction func imageButtonPressed() {
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self.giveFeedback(.medium)
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imageButton.isEnabled = false
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cameraView.capture()
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}
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// MARK: Life cycle
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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cameraView.delegate = self
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cameraView.launch { success, error in
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guard let err = error else {
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return
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}
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switch err {
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case "No camera access": self.showNoCameraAccessAlert()
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case "Camera error": self.showAlert("Unable to capture media")
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default: self.showAlert("Error in camera setup")
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}
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}
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self.imageButton.isEnabled = true
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}
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override func viewWillDisappear(_ animated: Bool) {
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super.viewWillDisappear(animated)
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cameraView.complete()
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}
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private func giveFeedback(_ style: UIImpactFeedbackGenerator.FeedbackStyle) {
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let generator = UIImpactFeedbackGenerator(style: style)
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generator.impactOccurred()
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}
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// MARK: Alerts
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private func showNoCameraAccessAlert() {
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let alert = UIAlertController(title: "Unable to access the Camera",
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message: "To enable access, go to Settings > Privacy > Camera and turn on Camera access for this app.",
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preferredStyle: .alert)//,
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//blurStyle: .dark)
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let okAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)
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alert.addAction(okAction)
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let settingsAction = UIAlertAction(title: "Settings", style: .default, handler: { _ in
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// Take the user to Settings app to possibly change permission.
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guard let settingsUrl = URL(string: UIApplication.openSettingsURLString) else { return }
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if UIApplication.shared.canOpenURL(settingsUrl) {
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UIApplication.shared.open(settingsUrl, completionHandler: nil)
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}
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})
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alert.addAction(settingsAction)
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self.present(alert, animated: true, completion: nil)
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}
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override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
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cameraView.didReceiveTouch(touches.first!)
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}
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}
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extension CameraController: PhotoCaptureHandlerDelegate {
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func didCapture(_ image: UIImage?) {
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log("Image captured")
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let factor = CGFloat(cropView.relativeSize)
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self.dismiss(animated: true)
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guard let img = image else {
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self.error("No image captured")
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return
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}
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guard delegate != nil else {
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self.error("No delegate")
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return
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}
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guard let masked = img.crop(factor: factor).circleMasked else {
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self.error("Could not mask image")
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return
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}
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let scaled = masked.resize(to: Cap.imageSize)
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delegate!.didCapture(image: scaled)
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}
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}
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extension CameraController: Logger { }
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