/**
* BARCODE DETECTOR
*/
async void BarcodeScannerClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
var config = new BarcodeScannerConfiguration();
//config.BarcodeFormats = BarcodeTypes.Instance.AcceptedTypes;
var result = await SBSDK.UI.LaunchBarcodeScannerAsync(config);
if (result.Status == OperationResult.Ok)
{
if (result.Barcodes.Count == 0)
{
ViewUtils.Alert(this, "Oops!", "No barcodes found, please try again");
return;
}
var source = result.Image;
var barcodes = result.Barcodes;
await Navigation.PushAsync(new BarcodeResultsPage(source, barcodes));
}
}
async void WorkflowDCClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
var workflow = SBSDK.UI.CreateWorkflow();
var ratios = new[] {
// DC form A5 portrait (e.g. white sheet, AUB Muster 1b/E (1/2018))
new AspectRatio(148.0, 210.0),
// DC form A6 landscape (e.g. yellow sheet, AUB Muster 1b (1.2018))
new AspectRatio(148.0, 105.0)
};
workflow.AddScanDisabilityCertificateStep(
title: "Scan Disability Certificate",
message: "Please align the DC form in the frame.",
requiredAspectRatios: ratios,
resultValidationHandler: (o, args) =>
{
var result = args.Result as IWorkflowDisabilityCertificateResult;
if (!result.DisabilityCertificate.RecognitionSuccessful)
{
string message = "Could not extract data. Please try again.";
args.SetError(message, ValidationErrorShowMode.Alert);
return;
}
// run some additional validations here
//result.DisabilityCertificate.Dates....
//result.DisabilityCertificate.Checkboxes...
}
);
await RunWorkflow(workflow);
}
async void WorkflowPayformClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
var workflow = SBSDK.UI.CreateWorkflow();
workflow.AddScanPayFormStep(
title: "PayForm Scanner",
message: "Please scan a SEPA PayForm",
resultValidationHandler: (o, args) =>
{
var result = args.Result as IWorkflowPayFormResult;
if (result.PayForm == null || result.PayForm.RecognizedFields.Count == 0)
{
args.SetError("Recognition was not successful. " +
"Please try again.", ValidationErrorShowMode.Alert);
return;
}
// run some additional validations here
//result.PayForm.RecognizedFields...
}
);
await RunWorkflow(workflow);
}
/**
* DOCUMENT SCANNER
*/
async void ScanningUIClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
var configuration = new DocumentScannerConfiguration
{
CameraPreviewMode = CameraPreviewMode.FitIn,
IgnoreBadAspectRatio = true,
MultiPageEnabled = true,
PolygonColor = Color.Red,
PolygonColorOK = Color.Green,
BottomBarBackgroundColor = Color.Blue,
PageCounterButtonTitle = "%d Page(s)",
//DocumentImageSizeLimit = new Size(2000, 3000),
// see further customization configs...
};
var result = await SBSDK.UI.LaunchDocumentScannerAsync(configuration);
if (result.Status == OperationResult.Ok)
{
foreach (var page in result.Pages)
{
Pages.Instance.List.Add(page);
}
await Navigation.PushAsync(new ImageResultsPage());
}
}
async void WorkflowMRZClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
var workflow = SBSDK.UI.CreateWorkflow();
var ratios = new[] {
new AspectRatio(85.0, 54.0), // ID card
new AspectRatio(125.0, 88.0) // Passport
};
workflow.AddScanMachineReadableZoneStep(
title: "Scan ID card or passport",
message: "Please align your ID card or passport in the frame.",
requiredAspectRatios: ratios,
resultValidationHandler: (o, args) =>
{
var result = args.Result as IWorkflowMachineReadableZoneResult;
if (result.MachineReadableZone == null ||
result.MachineReadableZone.CheckDigitsCount == 0)
{
var message = "Recognition was not successful. " +
"Please try again and scan the side with MRZ area.";
args.SetError(message, ValidationErrorShowMode.Alert);
return;
}
// run some additional validations here
//result.MachineReadableZone.Fields...
}
);
await RunWorkflow(workflow);
}
void SetBarcodeFormatsFilterClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
Navigation.PushAsync(new BarcodeSelectorPage());
}
void ViewImageResultsClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
Navigation.PushAsync(new ImageResultsPage());
}
async void OnSaveButtonClick(object sender, EventArgs e)
{
var parameters = new string[] { "PDF", "PDF with OCR", "TIFF (1-bit, B&W)" };
string action = await DisplayActionSheet("Save Image as", "Cancel", null, parameters);
if (action == null || action.Equals("Cancel"))
{
return;
}
(Content as AbsoluteLayout).RaiseChild(Loader);
if (!SDKUtils.CheckLicense(this))
{
return;
}
if (!SDKUtils.CheckDocuments(this, Pages.Instance.DocumentSources))
{
return;
}
if (action.Equals(parameters[0]))
{
var fileUri = await SBSDK.Operations
.CreatePdfAsync(Pages.Instance.DocumentSources, PDFPageSize.FixedA4);
ViewUtils.Alert(this, "Success: ", "Wrote documents to: " + fileUri.AbsolutePath);
}
else if (action.Equals(parameters[1]))
{
string path = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
string pdfFilePath = Path.Combine(path, Guid.NewGuid() + ".pdf");
var languages = new[] { "en" };
var result = await SBSDK.Operations.PerformOcrAsync(Pages.Instance.DocumentSources, languages, pdfFilePath);
// Or do something else with the results: result.Pages...
ViewUtils.Alert(this, "PDF with OCR layer stored: ", pdfFilePath);
}
else if (action.Equals(parameters[2]))
{
var fileUri = await SBSDK.Operations.WriteTiffAsync(
Pages.Instance.DocumentSources,
new TiffOptions { OneBitEncoded = true, Dpi = 300, Compression = TiffCompressionOptions.CompressionCcittT6 }
);
ViewUtils.Alert(this, "Success: ", "Wrote documents to: " + fileUri.AbsolutePath);
}
(Content as AbsoluteLayout).LowerChild(Loader);
}
async void ImportandDetectBarcodesClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
ImageSource source = await Scanbot.ImagePicker.Forms.ImagePicker.Instance.Pick();
if (source != null)
{
var barcodes = await SBSDK.Operations.DetectBarcodesFrom(source);
await Navigation.PushAsync(new BarcodeResultsPage(source, barcodes));
}
}
async void OnCropButtonClick(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
if (!SDKUtils.CheckPage(this, Pages.Instance.SelectedPage))
{
return;
}
var result = await SBSDK.UI.LaunchCroppingScreenAsync(Pages.Instance.SelectedPage);
Image.Source = null;
Image.Source = Pages.Instance.SelectedPage.Document;
}
/**
* MISCELLANEOUS
*/
async void CleanupClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
await SBSDK.Operations.CleanUp();
Pages.Instance.List.Clear();
var message = "Cleanup done. All scanned images " +
"and generated files (PDF, TIFF, etc) have been removed.";
ViewUtils.Alert(this, "Cleanup complete!", message);
}
async void EHICScannerClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
var configuration = new HealthInsuranceCardConfiguration {
};
var result = await SBSDK.UI.LaunchHealthInsuranceCardScannerAsync(configuration);
if (result.Status == OperationResult.Ok)
{
var message = SDKUtils.ParseEHICResult(result);
ViewUtils.Alert(this, "MRZ Scanner result", message);
}
}
async void FilterButtonClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
var action = await DisplayActionSheet(
"Filter", "Cancel", null, Enum.GetNames(typeof(ImageFilter))
);
ImageFilter filter;
Enum.TryParse(action, out filter);
CurrentFilter = filter;
Image.Source = await SBSDK.Operations
.ApplyImageFilterAsync(Image.Source, filter);
}
async void ImportButtonClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
ImageSource source = await ImagePicker.Forms.ImagePicker.Instance.Pick();
if (source != null)
{
// Import the selected image as original image and create a Page object
var importedPage = await SBSDK.Operations.CreateScannedPageAsync(source);
// Run document detection on it
await importedPage.DetectDocumentAsync();
Pages.Instance.List.Add(importedPage);
}
}
async void WorkflowQRClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
var workflow = SBSDK.UI.CreateWorkflow();
workflow.AddScanBarcodeStep(
"Scan Step 1/2", "Please scan a QR code.",
new[] { BarcodeFormat.QrCode }, new AspectRatio(1.0, 1.0)
);
workflow.AddScanDocumentPageStep(
"Scan Step 2/2",
"Please scan a document.");
await RunWorkflow(workflow);
}
/**
* WORKFLOWS
*/
async void MRZScannerClicked(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
MrzScannerConfiguration configuration = new MrzScannerConfiguration
{
FinderWidthRelativeToDeviceWidth = 0.95,
FinderHeightRelativeToDeviceWidth = 0.2,
};
var result = await SBSDK.UI.LaunchMrzScannerAsync(configuration);
if (result.Status == OperationResult.Ok)
{
var message = SDKUtils.ParseMRZResult(result);
ViewUtils.Alert(this, "MRZ Scanner result", message);
}
}
async void OnFilterButtonClick(object sender, EventArgs e)
{
if (!SDKUtils.CheckLicense(this))
{
return;
}
if (!SDKUtils.CheckPage(this, Pages.Instance.SelectedPage))
{
return;
}
var buttons = Enum.GetNames(typeof(ImageFilter));
var action = await DisplayActionSheet("Filter", "Cancel", null, buttons);
ImageFilter filter;
Enum.TryParse(action, out filter);
CurrentFilter = filter;
await Pages.Instance.SelectedPage.SetFilterAsync(filter);
Image.Source = Pages.Instance.SelectedPage.DocumentPreview;
}
async Task RunWorkflow(IWorkflow workflow)
{
var config = new WorkflowScannerConfiguration
{
IgnoreBadAspectRatio = true,
};
var result = await SBSDK.UI.LaunchWorkflowScannerAsync(workflow, config);
if (result.Status == OperationResult.Ok)
{
var results = result.Results;
ViewUtils.Alert(this, "Result:", SDKUtils.ParseWorkflowResults(results));
foreach (var item in results)
{
// Not all StepResults contain a captured page, try to find the one that has it
if (item.CapturedPage != null)
{
Pages.Instance.List.Add(item.CapturedPage);
}
}
}
}