mirror of
https://github.com/vector-im/element-ios.git
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187 lines
6.9 KiB
Swift
187 lines
6.9 KiB
Swift
/*
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Copyright 2019 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import Foundation
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import UIKit
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import AVFoundation
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@objc protocol CameraPresenterDelegate: class {
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func cameraPresenter(_ presenter: CameraPresenter, didSelectImageData imageData: Data, withUTI uti: MXKUTI?)
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func cameraPresenter(_ presenter: CameraPresenter, didSelectVideoAt url: URL)
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func cameraPresenterDidCancel(_ cameraPresenter: CameraPresenter)
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}
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/// CameraPresenter enables to present native camera
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@objc final class CameraPresenter: NSObject {
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// MARK: - Constants
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private enum Constants {
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static let jpegCompressionQuality: CGFloat = 1.0
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}
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// MARK: - Properties
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// MARK: - Private
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private weak var presentingViewController: UIViewController?
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private weak var cameraViewController: UIViewController?
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private var mediaUTIs: [MXKUTI] = []
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// MARK: - Public
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@objc weak var delegate: CameraPresenterDelegate?
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// MARK: - Public
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@objc func presentCamera(from presentingViewController: UIViewController, with mediaUTIs: [MXKUTI], animated: Bool) {
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self.presentingViewController = presentingViewController
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self.mediaUTIs = mediaUTIs
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self.checkCameraPermissionAndPresentCamera(animated: animated)
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}
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@objc func dismiss(animated: Bool, completion: (() -> Void)?) {
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guard let cameraViewController = self.cameraViewController else {
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return
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}
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cameraViewController.dismiss(animated: animated, completion: completion)
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}
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// MARK: - Private
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private func checkCameraPermissionAndPresentCamera(animated: Bool) {
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let authorizationStatus = AVCaptureDevice.authorizationStatus(for: .video)
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switch authorizationStatus {
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case .authorized:
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self.presentCameraController(animated: animated)
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case .notDetermined:
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self.requestCameraAccess(completion: { (granted) in
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if granted {
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self.presentCameraController(animated: animated)
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} else {
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self.presentPermissionDeniedAlert()
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}
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})
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case .denied, .restricted:
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self.presentPermissionDeniedAlert()
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@unknown default:
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break
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}
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}
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private func presentCameraController(animated: Bool) {
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guard let presentingViewController = self.presentingViewController else {
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return
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}
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guard let cameraViewController = self.buildCameraViewController() else {
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return
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}
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presentingViewController.present(cameraViewController, animated: true, completion: nil)
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self.cameraViewController = cameraViewController
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}
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private func buildCameraViewController() -> UIViewController? {
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guard UIImagePickerController.isSourceTypeAvailable(UIImagePickerController.SourceType.camera) else {
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return nil
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}
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let mediaTypes = self.mediaUTIs.map { (uti) -> String in
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return uti.rawValue
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}
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let imagePickerController = UIImagePickerController()
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imagePickerController.delegate = self
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imagePickerController.sourceType = UIImagePickerController.SourceType.camera
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imagePickerController.mediaTypes = mediaTypes
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imagePickerController.allowsEditing = false
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return imagePickerController
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}
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private func requestCameraAccess(completion: @escaping (_ granted: Bool) -> Void) {
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AVCaptureDevice.requestAccess(for: .video) { granted in
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DispatchQueue.main.async {
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completion(granted)
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}
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}
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}
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private func presentPermissionDeniedAlert() {
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guard let presentingViewController = self.presentingViewController, let settingsURL = URL(string: UIApplication.openSettingsURLString) else {
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return
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}
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let appDisplayName = Bundle.main.infoDictionary?["CFBundleDisplayName"] as? String ?? ""
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let alert = UIAlertController(title: VectorL10n.camera, message: VectorL10n.cameraAccessNotGranted(appDisplayName), preferredStyle: .alert)
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let cancelActionTitle = Bundle.mxk_localizedString(forKey: "ok")
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let cancelAction = UIAlertAction(title: cancelActionTitle, style: .cancel, handler: { _ in
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})
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let settingsActionTitle = Bundle.mxk_localizedString(forKey: "settings")
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let settingsAction = UIAlertAction(title: settingsActionTitle, style: .default, handler: { _ in
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UIApplication.shared.open(settingsURL, options: [:], completionHandler: { (succeed) in
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if !succeed {
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print("[CameraPresenter] Fails to open settings")
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}
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})
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})
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alert.addAction(cancelAction)
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alert.addAction(settingsAction)
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presentingViewController.present(alert, animated: true, completion: nil)
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}
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private func presentCameraUnavailableAlert() {
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guard let presentingViewController = self.presentingViewController else {
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return
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}
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let alert = UIAlertController(title: VectorL10n.camera, message: VectorL10n.cameraUnavailable, preferredStyle: .alert)
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let okAction = UIAlertAction(title: VectorL10n.accept, style: .default, handler: nil)
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alert.addAction(okAction)
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presentingViewController.present(alert, animated: true, completion: nil)
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}
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}
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// MARK: - UIImagePickerControllerDelegate
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extension CameraPresenter: UIImagePickerControllerDelegate {
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func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey: Any]) {
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if let videoURL = info[.mediaURL] as? URL {
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self.delegate?.cameraPresenter(self, didSelectVideoAt: videoURL)
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} else if let image = (info[.editedImage] ?? info[.originalImage]) as? UIImage, let imageData = image.jpegData(compressionQuality: Constants.jpegCompressionQuality) {
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self.delegate?.cameraPresenter(self, didSelectImageData: imageData, withUTI: MXKUTI.jpeg)
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}
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}
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func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
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self.delegate?.cameraPresenterDidCancel(self)
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}
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}
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// MARK: - UINavigationControllerDelegate
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extension CameraPresenter: UINavigationControllerDelegate {
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}
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