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Add scanned page image export sample #1

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4 changes: 4 additions & 0 deletions DocutainSDKExampleiOSSwift/Extensions.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,10 @@ internal extension String{
func localized() -> Self{
return NSLocalizedString(self, comment: "")
}

func localized(defaultValue: String) -> Self{
return NSLocalizedString(self, tableName: nil, bundle: .main, value: defaultValue, comment: "")
}
}

internal extension NSObject {
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84 changes: 82 additions & 2 deletions DocutainSDKExampleiOSSwift/ViewController.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,14 @@ class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSour
var itemType: ItemType
}

let listItems : [ListItem] = [ListItem](arrayLiteral: ListItem(title: "title_document_scan".localized(), icon: "DocumentScanner", subtitle: "subtitle_document_scan".localized(), itemType: ItemType.documentScan), ListItem(title: "title_data_extraction".localized(), icon: "DataExtraction", subtitle: "subtitle_data_extraction".localized(), itemType: ItemType.dataExtraction), ListItem(title: "title_text_recognition".localized(), icon: "OCR", subtitle: "subtitle_text_recognition".localized(), itemType: ItemType.textRecognition), ListItem(title: "title_PDF_generating".localized(), icon: "PDF", subtitle: "subtitle_PDF_generating".localized(), itemType: ItemType.pdfGenerating), ListItem(title: "title_settings".localized(), icon: "Settings", subtitle: "subtitle_settings".localized(), itemType: ItemType.settings))
let listItems : [ListItem] = [
ListItem(title: "title_document_scan".localized(), icon: "DocumentScanner", subtitle: "subtitle_document_scan".localized(), itemType: ItemType.documentScan),
ListItem(title: "title_data_extraction".localized(), icon: "DataExtraction", subtitle: "subtitle_data_extraction".localized(), itemType: ItemType.dataExtraction),
ListItem(title: "title_text_recognition".localized(), icon: "OCR", subtitle: "subtitle_text_recognition".localized(), itemType: ItemType.textRecognition),
ListItem(title: "title_PDF_generating".localized(), icon: "PDF", subtitle: "subtitle_PDF_generating".localized(), itemType: ItemType.pdfGenerating),
ListItem(title: "title_image_export".localized(defaultValue: "Image Export"), icon: "DocumentScanner", subtitle: "subtitle_image_export".localized(defaultValue: "Export each scanned or imported document page as a JPG image file."), itemType: ItemType.imageExport),
ListItem(title: "title_settings".localized(), icon: "Settings", subtitle: "subtitle_settings".localized(), itemType: ItemType.settings)
]

let cellReuseIdentifier = "cell"
let tableView = UITableView()
Expand All @@ -31,6 +38,7 @@ class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSour
case dataExtraction
case textRecognition
case pdfGenerating
case imageExport
case settings
}

Expand Down Expand Up @@ -150,6 +158,10 @@ class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSour
private func startPDFGenerating(){
showInputOptionAlert()
}

private func startImageExport(){
showInputOptionAlert()
}

private func showInputOptionAlert(){
let alert = UIAlertController(title: "Info", message: "input_option_message".localized(), preferredStyle: .actionSheet)
Expand Down Expand Up @@ -211,6 +223,68 @@ class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSour
}
}
}

private func exportImages(url: URL?){
DispatchQueue.global(qos: .userInitiated).async {
if let documentUrl = url{
//if an url is available it means we have imported a file. If so, we need to load it into the SDK first
if(!Document.loadFile(fileUrl: documentUrl)){
let errorMessage = "Document.loadFile failed with error: \(DocutainSDK.getLastError())"
print(errorMessage)
self.showImageExportError(message: errorMessage)
return
}
}

let pageCount = Document.pageCount()
if(pageCount == 0){
let errorMessage = "No document pages available for image export."
print(errorMessage)
self.showImageExportError(message: errorMessage)
return
}

let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
let path = paths[0]
var exportedImages = [URL]()

for page in 1...pageCount{
let imageUrl = path.appendingPathComponent("DocutainSDK_Page_\(page).jpg")
try? FileManager.default.removeItem(at: imageUrl)

if let savedImageUrl = Document.writeImage(page: page, fileUrl: imageUrl){
exportedImages.append(savedImageUrl)
} else{
let errorMessage = "Writing image file failed for page \(page), last error: \(DocutainSDK.getLastError())"
print(errorMessage)
self.showImageExportError(message: errorMessage)
return
}
}

DispatchQueue.main.async {
self.presentShareSheet(urls: exportedImages)
}
}
}

private func presentShareSheet(urls: [URL]){
let activityViewController = UIActivityViewController(activityItems: urls, applicationActivities: nil)
if let popoverController = activityViewController.popoverPresentationController{
popoverController.sourceView = self.view
popoverController.sourceRect = CGRect(x: self.view.bounds.midX, y: self.view.bounds.midY, width: 0, height: 0)
popoverController.permittedArrowDirections = []
}
present(activityViewController, animated: true)
}

private func showImageExportError(message: String){
DispatchQueue.main.async {
let alert = UIAlertController(title: "Image export failed", message: message, preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "OK", style: .default))
self.present(alert, animated: true)
}
}

private func openDataResultViewController(url: URL?){
navigationController!.pushViewController(ViewControllerDataResult(url: url), animated: true)
Expand All @@ -224,6 +298,8 @@ class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSour
switch selectedOption{
case ItemType.pdfGenerating:
generatePDF(url: url)
case ItemType.imageExport:
exportImages(url: url)
case ItemType.dataExtraction:
openDataResultViewController(url:url)
case ItemType.textRecognition:
Expand Down Expand Up @@ -268,6 +344,9 @@ class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSour
case ItemType.pdfGenerating:
selectedOption = ItemType.pdfGenerating
startPDFGenerating()
case ItemType.imageExport:
selectedOption = ItemType.imageExport
startImageExport()
case ItemType.settings:
selectedOption = ItemType.none
navigationController!.pushViewController(ViewControllerSettings(), animated: true)
Expand All @@ -282,6 +361,8 @@ class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSour
switch selectedOption{
case ItemType.pdfGenerating:
generatePDF(url:nil)
case ItemType.imageExport:
exportImages(url:nil)
case ItemType.dataExtraction:
openDataResultViewController(url:nil)
case ItemType.textRecognition:
Expand Down Expand Up @@ -329,4 +410,3 @@ class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSour
}
}
}

2 changes: 2 additions & 0 deletions DocutainSDKExampleiOSSwift/de.lproj/Localizable.strings
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Expand Up @@ -14,6 +14,8 @@
"subtitle_text_recognition" = "Führen Sie OCR für das zuvor gescannte oder importierte Dokument (PDF oder Bild) aus und erhalten Sie den erkannten Text.";
"title_PDF_generating" = "PDF Dokument erstellen";
"subtitle_PDF_generating" = "Generieren Sie aus den gescannten Seiten oder dem importierten Bild ein durchsuchbares PDF-Dokument (mit erkanntem Text).";
"title_image_export" = "Bildexport";
"subtitle_image_export" = "Exportieren Sie jede gescannte oder importierte Dokumentseite als JPG-Bilddatei.";
"title_settings" = "Einstellungen";
"subtitle_settings" = "Ändern Sie Einstellungen bezüglich Farbe, Scanner und Editieren des Docutain SDK.";
"input_option_message" = "Zunächst muss ein Dokument gescannt oder importiert werden.";
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2 changes: 2 additions & 0 deletions DocutainSDKExampleiOSSwift/en.lproj/Localizable.strings
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,8 @@
"subtitle_text_recognition" = "Run OCR on the previously scanned or imported (PDF or Image) document and get the recognized text.";
"title_PDF_generating" = "Generate PDF Document";
"subtitle_PDF_generating" = "Generate a searchable (includes recognized text) PDF document out of the scanned pages or imported image.";
"title_image_export" = "Image Export";
"subtitle_image_export" = "Export each scanned or imported document page as a JPG image file.";
"title_settings" = "Settings";
"subtitle_settings" = "Configure color, scanner and editing of the Docutain SDK.";
"input_option_message" = "First, scan or import a document.";
Expand Down