Sign document with Barcode signature - advanced

GroupDocs.Signature provides BarcodeSignOptions class to specify additional options for Barcode signature to specify following signature appearance

Here are the steps to add Barcode signature into document with GroupDocs.Signature:

  • Create new instance of Signature class and pass source document path as a constructor parameter.
  • Instantiate the  BarcodeSignOptions object with all required additional options.
  • Call sign method of Signature class instance and pass BarcodeSignOptions to it. 
  • Analyze SignResult result to check newly created signatures if needed.

This example shows how to add Barcode signature to document. See SignResult 

// instantiating the signature object
final Signature signature = new Signature("sample.docx");
try
{
    // setup options with text of signature
    BarcodeSignOptions signOptions = new BarcodeSignOptions("12345678");
    // setup Barcode encoding type
    signOptions.setEncodeType(BarcodeTypes.Code128);
    // set signature position
    signOptions.setLeft(100);
    signOptions.setTop(100);
    // when VerticalAlignment is set the Top coordinate will be ignored.
    // Use Margin properties Top, Bottom to provide vertical offset
    signOptions.setVerticalAlignment(VerticalAlignment.Top);
            // when HorizontalAlignment is set the Left coordinate will be ignored.
            // Use Margin properties Left, Right to provide horizontal offset
    signOptions.setHorizontalAlignment(HorizontalAlignment.Right);
    Padding padding = new Padding();
    padding.setLeft(20);
    padding.setTop(20);
    signOptions.setMargin(padding);
            // adjust signature appearance
            // setup signature border
    Border border = new Border();
    border.setColor(Color.GREEN);
    border.setDashStyle(DashStyle.DashLongDashDot);
    border.setWeight(2);
    border.setTransparency(0.5);
    border.setVisible(true);
    signOptions.setBorder(border);    
            // set text color and Font
    signOptions.setForeColor(Color.RED);
    SignatureFont font = new SignatureFont();
    font.setSize(12);
    font.setFamilyName("Comic Sans MS");
    signOptions.setFont(font);             
    // specify position of text with barcode line
    signOptions.setCodeTextAlignment(CodeTextAlignment.Above);
            // setup background
    Background background = new Background();
    background.setColor(Color.GREEN);
    background.setTransparency(0.5);
    background.setBrush(new LinearGradientBrush(Color.GREEN, Color.DARK_GRAY,0));
    signOptions.setBackground(background);                    
    
    // sign document   
    ignResult signResult = signature.sign("SampleSigned.docx", signOptions);
    // analyzing result
    System.out.print("List of newly created signatures:");
    int number = 1;
    for(BaseSignature temp : signResult.getSucceeded())
    {
        System.out.print("Signature #"+ number++ +": Type: "+temp.getSignatureType()+" Id:"+temp.getSignatureId()+
            ",Location: "+temp.getLeft()+"x"+temp.getTop()+". Size: "+temp.getWidth()+"x"+temp.getHeight());
    }   
}catch (Exception e){
    throw new GroupDocsSignatureException(e.getMessage());
}

More resources

GitHub Examples 

You may easily run the code above and see the feature in action in our GitHub examples:

Free Online App 

Along with full-featured .NET library we provide simple, but powerful free Apps.
You are welcome to eSign PDF, Word, Excel, PowerPoint documents with free to use online GroupDocs Signature App.

© Aspose Pty Ltd 2001-2022. All Rights Reserved.