added crop in QuickLook

Signed-off-by: Marino Faggiana <marino@marinofaggiana.com>

iOSClient/Viewer/NCViewerQuickLook/NCViewerQuickLook.swift

@@ -5,6 +5,7 @@
 //  Created by Marino Faggiana on 03/05/2020.
 //  Copyright © 2020 Marino Faggiana. All rights reserved.
 //  Copyright © 2022 Henrik Storch. All rights reserved.
+//  Copyright © 2023 Marino Faggiana. All rights reserved.
 //
 //  Author Marino Faggiana <marino.faggiana@nextcloud.com>
 //  Author Henrik Storch <henrik.storch@nextcloud.com>
@@ -28,12 +29,17 @@ import QuickLook
 import NextcloudKit
 import Mantis
 
+protocol NCViewerQuickLookDelegate: AnyObject {
+    func dismiss(url: URL, hasChanges: Bool)
+}
+
 @objc class NCViewerQuickLook: QLPreviewController {
 
     let url: URL
     var previewItems: [PreviewItem] = []
     var isEditingEnabled: Bool
     var metadata: tableMetadata?
+    var delegateViewer: NCViewerQuickLookDelegate?
 
     // if the document has any changes (annotations)
     var hasChanges = false
@@ -41,6 +47,9 @@ import Mantis
     // used to display the save alert
     var parentVC: UIViewController?
 
+    // if the Crop is presented
+    var isPresentCrop = false
+
     required init?(coder: NSCoder) {
         fatalError("init(coder:) has not been implemented")
     }
@@ -84,6 +93,8 @@ import Mantis
     override func viewDidDisappear(_ animated: Bool) {
         super.viewDidDisappear(animated)
 
+        guard !isPresentCrop else { return }
+        delegateViewer?.dismiss(url: url, hasChanges: hasChanges)
         guard isEditingEnabled, hasChanges, let metadata = metadata else { return }
 
         let alertController = UIAlertController(title: NSLocalizedString("_save_", comment: ""), message: nil, preferredStyle: .alert)
@@ -108,7 +119,7 @@ import Mantis
 
     @objc func crop() {
 
-        guard let fileName = self.metadata?.fileNameView, let image = UIImage(contentsOfFile: NSTemporaryDirectory() + fileName) else { return }
+        guard let image = UIImage(contentsOfFile: url.path) else { return }
         let config = Mantis.Config()
 
         if let bundleIdentifier = Bundle.main.bundleIdentifier {
@@ -120,6 +131,7 @@ import Mantis
         cropViewController.delegate = self
         cropViewController.modalPresentationStyle = .fullScreen
 
+        self.isPresentCrop = true
         self.present(cropViewController, animated: true)
     }
 }
@@ -188,7 +200,9 @@ extension NCViewerQuickLook: QLPreviewControllerDataSource, QLPreviewControllerD
 extension NCViewerQuickLook: CropViewControllerDelegate {
 
     func cropViewControllerDidCrop(_ cropViewController: Mantis.CropViewController, cropped: UIImage, transformation: Mantis.Transformation, cropInfo: Mantis.CropInfo) {
-        cropViewController.dismiss(animated: true)
+        cropViewController.dismiss(animated: true) {
+            self.isPresentCrop = false
+        }
 
         guard let data = cropped.jpegData(compressionQuality: 1) else { return }
 
@@ -200,7 +214,9 @@ extension NCViewerQuickLook: CropViewControllerDelegate {
 
     func cropViewControllerDidCancel(_ cropViewController: Mantis.CropViewController, original: UIImage) {
 
-        cropViewController.dismiss(animated: true)
+        cropViewController.dismiss(animated: true) {
+            self.isPresentCrop = false
+        }
     }
 }