// // NCCreateFormUploadScanDocument.swift // Nextcloud // // Created by Marino Faggiana on 14/11/2018. // Copyright © 2018 Marino Faggiana. All rights reserved. // // Author Marino Faggiana // // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program. If not, see . // import Foundation import WeScan import NCCommunication import Vision class NCCreateFormUploadScanDocument: XLFormViewController, NCSelectDelegate, NCCreateFormUploadConflictDelegate { enum typeDpiQuality { case low case medium case high } var dpiQuality: typeDpiQuality = typeDpiQuality.medium var serverUrl = "" var titleServerUrl = "" var arrayImages: [UIImage] = [] var fileName = CCUtility.createFileNameDate("scan", extension: "pdf") var password: String = "" var fileType = "PDF" let appDelegate = UIApplication.shared.delegate as! AppDelegate convenience init(serverUrl: String, arrayImages: [UIImage]) { self.init() if serverUrl == NCUtility.shared.getHomeServer(urlBase: appDelegate.urlBase, account: appDelegate.account) { titleServerUrl = "/" } else { titleServerUrl = (serverUrl as NSString).lastPathComponent } self.serverUrl = serverUrl self.arrayImages = arrayImages } // MARK: - View Life Cycle override func viewDidLoad() { super.viewDidLoad() self.title = NSLocalizedString("_save_settings_", comment: "") let saveButton : UIBarButtonItem = UIBarButtonItem(title: NSLocalizedString("_save_", comment: ""), style: UIBarButtonItem.Style.plain, target: self, action: #selector(save)) self.navigationItem.rightBarButtonItem = saveButton self.tableView.separatorStyle = UITableViewCell.SeparatorStyle.none // self.tableView.sectionHeaderHeight = 10 // self.tableView.sectionFooterHeight = 10 // self.tableView.backgroundColor = NCBrandColor.sharedInstance.backgroundView // let row : XLFormRowDescriptor = self.form.formRow(withTag: "fileName")! // let rowCell = row.cell(forForm: self) // rowCell.becomeFirstResponder() NotificationCenter.default.addObserver(self, selector: #selector(changeTheming), name: NSNotification.Name(rawValue: k_notificationCenter_changeTheming), object: nil) changeTheming() if #available(iOS 13.0, *) { let value = CCUtility.getTextRecognitionStatus() SetTextRecognition(newValue: value) } } @objc func changeTheming() { view.backgroundColor = NCBrandColor.sharedInstance.backgroundForm tableView.backgroundColor = NCBrandColor.sharedInstance.backgroundForm tableView.reloadData() initializeForm() } //MARK: XLForm func initializeForm() { let form : XLFormDescriptor = XLFormDescriptor() as XLFormDescriptor form.rowNavigationOptions = XLFormRowNavigationOptions.stopDisableRow var section : XLFormSectionDescriptor var row : XLFormRowDescriptor // Section: Destination Folder section = XLFormSectionDescriptor.formSection(withTitle: NSLocalizedString("_save_path_", comment: "")) form.addFormSection(section) row = XLFormRowDescriptor(tag: "ButtonDestinationFolder", rowType: XLFormRowDescriptorTypeButton, title: self.titleServerUrl) row.action.formSelector = #selector(changeDestinationFolder(_:)) row.cellConfig["backgroundColor"] = NCBrandColor.sharedInstance.backgroundForm row.cellConfig["imageView.image"] = CCGraphics.changeThemingColorImage(UIImage(named: "folder")!, width: 50, height: 50, color: NCBrandColor.sharedInstance.brandElement) as UIImage row.cellConfig["textLabel.textAlignment"] = NSTextAlignment.right.rawValue row.cellConfig["textLabel.font"] = UIFont.systemFont(ofSize: 15.0) row.cellConfig["textLabel.textColor"] = NCBrandColor.sharedInstance.textView section.addFormRow(row) // Section: Quality section = XLFormSectionDescriptor.formSection(withTitle: NSLocalizedString("_quality_image_title_", comment: "")) form.addFormSection(section) row = XLFormRowDescriptor(tag: "compressionQuality", rowType: XLFormRowDescriptorTypeSlider) row.value = 0.5 row.title = NSLocalizedString("_quality_medium_", comment: "") row.cellConfig["backgroundColor"] = NCBrandColor.sharedInstance.backgroundForm row.cellConfig["slider.minimumTrackTintColor"] = NCBrandColor.sharedInstance.brandElement row.cellConfig["slider.maximumValue"] = 1 row.cellConfig["slider.minimumValue"] = 0 row.cellConfig["steps"] = 2 row.cellConfig["textLabel.textAlignment"] = NSTextAlignment.center.rawValue row.cellConfig["textLabel.font"] = UIFont.systemFont(ofSize: 15.0) row.cellConfig["textLabel.textColor"] = NCBrandColor.sharedInstance.textView section.addFormRow(row) // Section: Password section = XLFormSectionDescriptor.formSection(withTitle: NSLocalizedString("_pdf_password_", comment: "")) form.addFormSection(section) row = XLFormRowDescriptor(tag: "password", rowType: XLFormRowDescriptorTypePassword, title: NSLocalizedString("_password_", comment: "")) row.cellConfig["backgroundColor"] = NCBrandColor.sharedInstance.backgroundForm row.cellConfig["textLabel.font"] = UIFont.systemFont(ofSize: 15.0) row.cellConfig["textLabel.textColor"] = NCBrandColor.sharedInstance.textView row.cellConfig["textField.textAlignment"] = NSTextAlignment.right.rawValue row.cellConfig["textField.font"] = UIFont.systemFont(ofSize: 15.0) row.cellConfig["textField.textColor"] = NCBrandColor.sharedInstance.textView section.addFormRow(row) // Section: Text recognition if #available(iOS 13.0, *) { section = XLFormSectionDescriptor.formSection(withTitle: NSLocalizedString("_text_recognition_", comment: "")) form.addFormSection(section) row = XLFormRowDescriptor(tag: "textRecognition", rowType: XLFormRowDescriptorTypeBooleanSwitch, title: NSLocalizedString("_text_recognition_", comment: "")) row.value = 0 row.cellConfig["backgroundColor"] = NCBrandColor.sharedInstance.backgroundForm row.cellConfig["imageView.image"] = CCGraphics.changeThemingColorImage(UIImage(named: "textRecognition")!, width: 50, height: 50, color: NCBrandColor.sharedInstance.brandElement) as UIImage row.cellConfig["textLabel.font"] = UIFont.systemFont(ofSize: 15.0) row.cellConfig["textLabel.textColor"] = NCBrandColor.sharedInstance.textView section.addFormRow(row) } // Section: File section = XLFormSectionDescriptor.formSection(withTitle: NSLocalizedString("_file_creation_", comment: "")) form.addFormSection(section) row = XLFormRowDescriptor(tag: "filetype", rowType: XLFormRowDescriptorTypeSelectorSegmentedControl, title: NSLocalizedString("_file_type_", comment: "")) if arrayImages.count == 1 { row.selectorOptions = ["PDF","JPG"] } else { row.selectorOptions = ["PDF"] } row.value = "PDF" row.cellConfig["backgroundColor"] = NCBrandColor.sharedInstance.backgroundForm row.cellConfig["tintColor"] = NCBrandColor.sharedInstance.brandElement row.cellConfig["textLabel.font"] = UIFont.systemFont(ofSize: 15.0) row.cellConfig["textLabel.textColor"] = NCBrandColor.sharedInstance.textView section.addFormRow(row) row = XLFormRowDescriptor(tag: "fileName", rowType: XLFormRowDescriptorTypeAccount, title: NSLocalizedString("_filename_", comment: "")) row.value = self.fileName row.cellConfig["backgroundColor"] = NCBrandColor.sharedInstance.backgroundForm row.cellConfig["textLabel.font"] = UIFont.systemFont(ofSize: 15.0) row.cellConfig["textLabel.textColor"] = NCBrandColor.sharedInstance.textView row.cellConfig["textField.textAlignment"] = NSTextAlignment.right.rawValue row.cellConfig["textField.font"] = UIFont.systemFont(ofSize: 15.0) row.cellConfig["textField.textColor"] = NCBrandColor.sharedInstance.textView section.addFormRow(row) self.form = form } override func formRowDescriptorValueHasChanged(_ formRow: XLFormRowDescriptor!, oldValue: Any!, newValue: Any!) { super.formRowDescriptorValueHasChanged(formRow, oldValue: oldValue, newValue: newValue) if formRow.tag == "textRecognition" { self.SetTextRecognition(newValue: newValue as! Int) } if formRow.tag == "fileName" { self.form.delegate = nil let fileNameNew = newValue as? String if fileNameNew != nil { self.fileName = CCUtility.removeForbiddenCharactersServer(fileNameNew) } else { self.fileName = "" } formRow.value = self.fileName self.updateFormRow(formRow) self.form.delegate = self } if formRow.tag == "compressionQuality" { self.form.delegate = nil //let row : XLFormRowDescriptor = self.form.formRow(withTag: "descriptionQuality")! let newQuality = newValue as? NSNumber let compressionQuality = (newQuality?.doubleValue)! if compressionQuality >= 0.0 && compressionQuality <= 0.3 { formRow.title = NSLocalizedString("_quality_low_", comment: "") dpiQuality = typeDpiQuality.low } else if compressionQuality > 0.3 && compressionQuality <= 0.6 { formRow.title = NSLocalizedString("_quality_medium_", comment: "") dpiQuality = typeDpiQuality.medium } else if compressionQuality > 0.6 && compressionQuality <= 1.0 { formRow.title = NSLocalizedString("_quality_high_", comment: "") dpiQuality = typeDpiQuality.high } self.updateFormRow(formRow) self.form.delegate = self } if formRow.tag == "password" { let stringPassword = newValue as? String if stringPassword != nil { password = stringPassword! } else { password = "" } } if formRow.tag == "filetype" { fileType = newValue as! String let rowFileName : XLFormRowDescriptor = self.form.formRow(withTag: "fileName")! let rowPassword : XLFormRowDescriptor = self.form.formRow(withTag: "password")! rowFileName.value = createFileName(rowFileName.value as? String) self.updateFormRow(rowFileName) // rowPassword if fileType == "JPG" || fileType == "TXT" { rowPassword.value = "" password = "" rowPassword.disabled = true } else { rowPassword.disabled = false } self.updateFormRow(rowPassword) } } func SetTextRecognition(newValue: Int) { let rowCompressionQuality: XLFormRowDescriptor = self.form.formRow(withTag: "compressionQuality")! let rowFileTape: XLFormRowDescriptor = self.form.formRow(withTag: "filetype")! let rowFileName: XLFormRowDescriptor = self.form.formRow(withTag: "fileName")! let rowPassword: XLFormRowDescriptor = self.form.formRow(withTag: "password")! let rowTextRecognition: XLFormRowDescriptor = self.form.formRow(withTag: "textRecognition")! self.form.delegate = nil if newValue == 1 { rowFileTape.selectorOptions = ["PDF","TXT"] rowFileTape.value = "PDF" fileType = "PDF" rowPassword.disabled = true rowCompressionQuality.disabled = false } else { if arrayImages.count == 1 { rowFileTape.selectorOptions = ["PDF","JPG"] } else { rowFileTape.selectorOptions = ["PDF"] } rowFileTape.value = "PDF" fileType = "PDF" rowPassword.disabled = false rowCompressionQuality.disabled = false } rowFileName.value = createFileName(rowFileName.value as? String) self.updateFormRow(rowFileName) self.tableView.reloadData() CCUtility.setTextRecognitionStatus(newValue) rowTextRecognition.value = newValue self.form.delegate = self } override func textFieldDidBeginEditing(_ textField: UITextField) { let cell = textField.formDescriptorCell() let tag = cell?.rowDescriptor.tag if tag == "fileName" { CCUtility.selectFileName(from: textField) } } func createFileName(_ fileName: String?) -> String { var name: String = "" var newFileName: String = "" if fileName == nil || fileName == "" { name = CCUtility.createFileNameDate("scan", extension: "pdf") ?? "scan.pdf" } else { name = fileName! } let ext = (name as NSString).pathExtension.uppercased() if (ext == "") { newFileName = name + "." + fileType.lowercased() } else { newFileName = (name as NSString).deletingPathExtension + "." + fileType.lowercased() } return newFileName } // MARK: - Action func dismissSelect(serverUrl: String?, metadata: tableMetadata?, type: String, items: [Any], buttonType: String, overwrite: Bool) { if serverUrl != nil { CCUtility.setDirectoryScanDocuments(serverUrl!) self.serverUrl = serverUrl! if serverUrl == NCUtility.shared.getHomeServer(urlBase: appDelegate.urlBase, account: appDelegate.account) { self.titleServerUrl = "/" } else { self.titleServerUrl = (serverUrl! as NSString).lastPathComponent } // Update let row : XLFormRowDescriptor = self.form.formRow(withTag: "ButtonDestinationFolder")! row.title = self.titleServerUrl self.updateFormRow(row) } } @objc func save() { let rowFileName : XLFormRowDescriptor = self.form.formRow(withTag: "fileName")! guard let name = rowFileName.value else { return } if name as! String == "" { return } let ext = (name as! NSString).pathExtension.uppercased() var fileNameSave = "" if (ext == "") { fileNameSave = name as! String + "." + fileType.lowercased() } else { fileNameSave = (name as! NSString).deletingPathExtension + "." + fileType.lowercased() } //Create metadata for upload let metadataForUpload = NCManageDatabase.sharedInstance.createMetadata(account: appDelegate.account, fileName: fileNameSave, ocId: UUID().uuidString, serverUrl: serverUrl, urlBase: appDelegate.urlBase, url: "", contentType: "", livePhoto: false) metadataForUpload.session = NCNetworking.shared.sessionIdentifierBackground metadataForUpload.sessionSelector = selectorUploadFile metadataForUpload.status = Int(k_metadataStatusWaitUpload) if NCUtility.shared.getMetadataConflict(account: appDelegate.account, serverUrl: serverUrl, fileName: fileNameSave) != nil { guard let conflictViewController = UIStoryboard(name: "NCCreateFormUploadConflict", bundle: nil).instantiateInitialViewController() as? NCCreateFormUploadConflict else { return } conflictViewController.textLabelDetailNewFile = NSLocalizedString("_now_", comment: "") conflictViewController.serverUrl = serverUrl conflictViewController.metadatasUploadInConflict = [metadataForUpload] conflictViewController.delegate = self self.present(conflictViewController, animated: true, completion: nil) } else { NCUtility.shared.startActivityIndicator(view: self.view) DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) { self.dismissAndUpload(metadataForUpload) } } } func dismissCreateFormUploadConflict(metadatas: [tableMetadata]?) { if metadatas != nil && metadatas!.count > 0 { NCUtility.shared.startActivityIndicator(view: self.view) DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) { self.dismissAndUpload(metadatas![0]) } } } func dismissAndUpload(_ metadata: tableMetadata) { guard let fileNameGenerateExport = CCUtility.getDirectoryProviderStorageOcId(metadata.ocId, fileNameView: metadata.fileNameView) else { NCUtility.shared.stopActivityIndicator() NCContentPresenter.shared.messageNotification("_error_", description: "_error_creation_file_", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.info, errorCode: Int(k_CCErrorCreationFile), forced: true) return } // Text Recognition TXT if fileType == "TXT" && self.form.formRow(withTag: "textRecognition")!.value as! Int == 1 { var textFile = "" for image in self.arrayImages { if #available(iOS 13.0, *) { let requestHandler = VNImageRequestHandler(cgImage: image.cgImage!, options: [:]) let request = VNRecognizeTextRequest { (request, error) in guard let observations = request.results as? [VNRecognizedTextObservation] else { NCUtility.shared.stopActivityIndicator() return } for observation in observations { guard let textLine = observation.topCandidates(1).first else { continue } textFile += textLine.string textFile += "\n" } } request.recognitionLevel = .accurate request.usesLanguageCorrection = true try? requestHandler.perform([request]) } } do { try textFile.write(to: NSURL(fileURLWithPath: fileNameGenerateExport) as URL , atomically: true, encoding: .utf8) } catch { NCUtility.shared.stopActivityIndicator() NCContentPresenter.shared.messageNotification("_error_", description: "_error_creation_file_", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.info, errorCode: Int(k_CCErrorCreationFile), forced: true) return } } if fileType == "PDF" { let pdfData = NSMutableData() if password.count > 0 { let info: [AnyHashable: Any] = [kCGPDFContextUserPassword as String : password, kCGPDFContextOwnerPassword as String : password] UIGraphicsBeginPDFContextToData(pdfData, CGRect.zero, info) } else { UIGraphicsBeginPDFContextToData(pdfData, CGRect.zero, nil) } var fontColor = UIColor.clear #if targetEnvironment(simulator) fontColor = UIColor.red #endif for var image in self.arrayImages { image = changeCompressionImage(image, dpiQuality: dpiQuality) let bounds = CGRect(x: 0, y: 0, width: image.size.width, height: image.size.height) if #available(iOS 13.0, *) { if self.form.formRow(withTag: "textRecognition")!.value as! Int == 1 { UIGraphicsBeginPDFPageWithInfo(bounds, nil) image.draw(in: bounds) let requestHandler = VNImageRequestHandler(cgImage: image.cgImage!, options: [:]) let request = VNRecognizeTextRequest { (request, error) in guard let observations = request.results as? [VNRecognizedTextObservation] else { NCUtility.shared.stopActivityIndicator() return } for observation in observations { guard let textLine = observation.topCandidates(1).first else { continue } var t: CGAffineTransform = CGAffineTransform.identity t = t.scaledBy(x: image.size.width, y: -image.size.height) t = t.translatedBy(x: 0, y: -1) let rect = observation.boundingBox.applying(t) let text = textLine.string let font = UIFont.systemFont(ofSize: rect.size.height, weight: .regular) let attributes = self.bestFittingFont(for: text, in: rect, fontDescriptor: font.fontDescriptor, fontColor: fontColor) text.draw(with: rect, options: .usesLineFragmentOrigin, attributes: attributes, context: nil) } } request.recognitionLevel = .accurate request.usesLanguageCorrection = true try? requestHandler.perform([request]) } else { UIGraphicsBeginPDFPageWithInfo(bounds, nil) image.draw(in: bounds) } } else { UIGraphicsBeginPDFPageWithInfo(bounds, nil) image.draw(in: bounds) } } UIGraphicsEndPDFContext(); do { try pdfData.write(toFile: fileNameGenerateExport, options: .atomic) } catch { print("error catched") } } if fileType == "JPG" { let image = changeCompressionImage(self.arrayImages[0], dpiQuality: dpiQuality) guard let data = image.jpegData(compressionQuality: CGFloat(0.5)) else { NCUtility.shared.stopActivityIndicator() NCContentPresenter.shared.messageNotification("_error_", description: "_error_creation_file_", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.info, errorCode: Int(k_CCErrorCreationFile), forced: true) return } do { try data.write(to: NSURL.fileURL(withPath: fileNameGenerateExport), options: .atomic) } catch { NCUtility.shared.stopActivityIndicator() NCContentPresenter.shared.messageNotification("_error_", description: "_error_creation_file_", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.info, errorCode: Int(k_CCErrorCreationFile), forced: true) return } } NCUtility.shared.stopActivityIndicator() NCManageDatabase.sharedInstance.addMetadata(metadata) appDelegate.networkingAutoUpload.startProcess() // Request delete all image scanned let alertController = UIAlertController(title: "", message: NSLocalizedString("_delete_all_scanned_images_", comment: ""), preferredStyle: .alert) let actionYes = UIAlertAction(title: NSLocalizedString("_yes_delete_", comment: ""), style: .default) { (action:UIAlertAction) in let path = CCUtility.getDirectoryScan()! do { let filePaths = try FileManager.default.contentsOfDirectory(atPath: path) for filePath in filePaths { try FileManager.default.removeItem(atPath: path + "/" + filePath) } } catch let error as NSError { print("Error: \(error.debugDescription)") } self.dismiss(animated: true, completion: nil) } let actionNo = UIAlertAction(title: NSLocalizedString("_no_delete_", comment: ""), style: .default) { (action:UIAlertAction) in self.dismiss(animated: true, completion: nil) } alertController.addAction(actionYes) alertController.addAction(actionNo) self.present(alertController, animated: true, completion:nil) } func cancel() { self.dismiss(animated: true, completion: nil) } @objc func changeDestinationFolder(_ sender: XLFormRowDescriptor) { self.deselectFormRow(sender) let storyboard = UIStoryboard(name: "NCSelect", bundle: nil) let navigationController = storyboard.instantiateInitialViewController() as! UINavigationController let viewController = navigationController.topViewController as! NCSelect viewController.delegate = self viewController.hideButtonCreateFolder = false viewController.includeDirectoryE2EEncryption = true viewController.includeImages = false viewController.selectFile = false viewController.titleButtonDone = NSLocalizedString("_select_", comment: "") viewController.type = "" navigationController.modalPresentationStyle = UIModalPresentationStyle.fullScreen self.present(navigationController, animated: true, completion: nil) } func changeCompressionImage(_ image: UIImage, dpiQuality: typeDpiQuality) -> UIImage { var compressionQuality: CGFloat = 0.5 var scale: Float = 1.0 switch dpiQuality { case typeDpiQuality.low: // set to 72 dpi compressionQuality = 0.1 case typeDpiQuality.medium: // at 150 dpi compressionQuality = 0.5 scale = (150.0 / 72.0) case typeDpiQuality.high: // at 300 dpi compressionQuality = 0.9 scale = (200.0 / 72.0) } let maxHeight: Float = Float(595.2) * scale // A4 let maxWidth: Float = Float(841.8) * scale // A4 var actualHeight = Float(image.size.height * image.scale) var actualWidth = Float(image.size.width * image.scale) var imgRatio: Float = actualWidth / actualHeight let maxRatio: Float = maxWidth / maxHeight if actualHeight > maxHeight || actualWidth > maxWidth { if imgRatio < maxRatio { //adjust width according to maxHeight imgRatio = maxHeight / actualHeight actualWidth = imgRatio * actualWidth actualHeight = maxHeight } else if imgRatio > maxRatio { //adjust height according to maxWidth imgRatio = maxWidth / actualWidth actualHeight = imgRatio * actualHeight actualWidth = maxWidth } else { actualHeight = maxHeight actualWidth = maxWidth } } let rect = CGRect(x: 0.0, y: 0.0, width: CGFloat(actualWidth), height: CGFloat(actualHeight)) UIGraphicsBeginImageContextWithOptions(rect.size, false, image.scale) image.draw(in: rect) let img = UIGraphicsGetImageFromCurrentImageContext() let imageData = img?.jpegData(compressionQuality: CGFloat(compressionQuality)) UIGraphicsEndImageContext() return UIImage(data: imageData!) ?? image } func bestFittingFont(for text: String, in bounds: CGRect, fontDescriptor: UIFontDescriptor, fontColor: UIColor) -> [NSAttributedString.Key: Any] { let constrainingDimension = min(bounds.width, bounds.height) let properBounds = CGRect(origin: .zero, size: bounds.size) var attributes: [NSAttributedString.Key: Any] = [:] let infiniteBounds = CGSize(width: CGFloat.infinity, height: CGFloat.infinity) var bestFontSize: CGFloat = constrainingDimension // Search font (H) for fontSize in stride(from: bestFontSize, through: 0, by: -1) { let newFont = UIFont(descriptor: fontDescriptor, size: fontSize) attributes[.font] = newFont let currentFrame = text.boundingRect(with: infiniteBounds, options: [.usesLineFragmentOrigin, .usesFontLeading], attributes: attributes, context: nil) if properBounds.contains(currentFrame) { bestFontSize = fontSize break } } // Search kern (W) let font = UIFont(descriptor: fontDescriptor, size: bestFontSize) attributes = [NSAttributedString.Key.font: font, NSAttributedString.Key.foregroundColor: fontColor, NSAttributedString.Key.kern: 0] as [NSAttributedString.Key : Any] for kern in stride(from: 0, through: 100, by: 0.1) { let attributesTmp = [NSAttributedString.Key.font: font, NSAttributedString.Key.foregroundColor: fontColor, NSAttributedString.Key.kern: kern] as [NSAttributedString.Key : Any] let size = text.size(withAttributes: attributesTmp).width if size <= bounds.width { attributes = attributesTmp } else { break } } return attributes } } class NCCreateScanDocument : NSObject, ImageScannerControllerDelegate { @objc static let sharedInstance: NCCreateScanDocument = { let instance = NCCreateScanDocument() return instance }() let appDelegate = UIApplication.shared.delegate as! AppDelegate var viewController: UIViewController? func openScannerDocument(viewController: UIViewController) { self.viewController = viewController let scannerVC = ImageScannerController() scannerVC.imageScannerDelegate = self self.viewController?.present(scannerVC, animated: true, completion: nil) } func imageScannerController(_ scanner: ImageScannerController, didFinishScanningWithResults results: ImageScannerResults) { let fileName = CCUtility.createFileName("scan.png", fileDate: Date(), fileType: PHAssetMediaType.image, keyFileName: k_keyFileNameMask, keyFileNameType: k_keyFileNameType, keyFileNameOriginal: k_keyFileNameOriginal)! let fileNamePath = CCUtility.getDirectoryScan() + "/" + fileName let image: UIImage? if results.doesUserPreferEnhancedScan { image = results.enhancedScan?.image } else { image = results.croppedScan.image } if image != nil { do { try image!.pngData()?.write(to: NSURL.fileURL(withPath: fileNamePath)) } catch { } } scanner.dismiss(animated: true, completion: { if self.viewController is DragDropViewController { (self.viewController as! DragDropViewController).loadImage() } else { let storyboard = UIStoryboard(name: "Scan", bundle: nil) let controller = storyboard.instantiateInitialViewController()! controller.modalPresentationStyle = UIModalPresentationStyle.pageSheet self.viewController?.present(controller, animated: true, completion: nil) } }) } func imageScannerControllerDidCancel(_ scanner: ImageScannerController) { scanner.dismiss(animated: true, completion: nil) } func imageScannerController(_ scanner: ImageScannerController, didFailWithError error: Error) { NCContentPresenter.shared.messageNotification("_error_", description: error.localizedDescription, delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: Int(k_CCErrorInternalError)) } }