Sign Pdf documents with special appearance

GroupDocs.Signature contains classes that implements for Pdf document special signature appearances.

Base signature options SignOptions contains property SignOptions.setAppearance that expects instance of the following classes

PdfTextAnnotationAppearance class implements for Pdf documents signature as annotation area. Note that TextSignOptions.setSignatureImplementation property must be set to TextSignatureImplementation.Annotation
PdfTextStickerAppearance class implements for Pdf documents signature as small sticker. Note that TextSignOptions.setSignatureImplementation property must be set to TextSignatureImplementation.Sticker

Here are the steps to setup special Pdf document Text signature appearance with GroupDocs.Signature:

Create new instance of Signature class and pass source document path as a constructor parameter.
Compose object of TextSignOptions object with all required additional options.
Set TextSignOptions.setAppearance property with PdfTextAnnotationAppearance object and set its properties
Call sign method of Signature class instance and pass TextSignOptions to it.
Analyze SignResult result to check newly created signatures if needed.

Sign Pdf document with Text signature Annotation appearance

This example shows how to add Text signature to Pdf document with annotation look. See SignResult

Signature signature = new Signature("sample.pdf");
TextSignOptions options = new TextSignOptions("John Smith");
 
// set signature position
options.setLeft(100);
options.setTop(100);
 
// set signature rectangle
options.setWidth(100);
options.setHeight(30);
// setup proper signature implementation
options.setSignatureImplementation(TextSignatureImplementation.Annotation);
 
PdfTextAnnotationAppearance appearance = new PdfTextAnnotationAppearance();
Border border = new Border();
border.setColor(Color.BLUE);
border.setDashStyle(DashStyle.Dash);
border.setWeight(2);
appearance.setBorder(border);
appearance.setBorderEffect(PdfTextAnnotationBorderEffect.Cloudy);
appearance.setBorderEffectIntensity(2);
appearance.setHCornerRadius(10);
 
// text content of an annotation
appearance.setContents("Sample");
appearance.setSubject("Sample subject");
appearance.setTitle("Sample Title");
 
options.setAppearance(appearance);
// set signature alignment
options.setVerticalAlignment(VerticalAlignment.Bottom);
options.setHorizontalAlignment(HorizontalAlignment.Right);
Padding padding = new Padding();
padding.setBottom(20);
padding.setRight(20);
options.setMargin(padding);
// set text color and Font
options.setForeColor(Color.RED);
SignatureFont signatureFont = new SignatureFont();
signatureFont.setSize(12);
signatureFont.setFamilyName("Comic Sans MS");
options.setFont(signatureFont);
 
// sign document to file
SignResult signResult = signature.sign("signedAnnotation.pdf", options);
// 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());
}

Sign Pdf document with Text signature Sticker appearance

This example shows how to add Text signature to Pdf document with sticker look. See SignResult

Signature signature = new Signature("sample.pdf");
TextSignOptions options = new TextSignOptions("John Smith");
 
// set signature position
options.setLeft(100);
options.setTop(100);
 
// set signature rectangle
options.setWidth(100);
options.setHeight(30);
// setup proper signature implementation
options.setSignatureImplementation(TextSignatureImplementation.Sticker);
PdfTextStickerAppearance appearance = new PdfTextStickerAppearance();
// select sticker icon
appearance.setIcon(PdfTextStickerIcon.Star);
// setup if popup annotation will be opened by default
appearance.setOpened(false);
// text content of an annotation
appearance.setContents("Sample");
appearance.setSubject("Sample subject");
appearance.setTitle("Sample Title");
options.setAppearance(appearance);
     
// set signature alignment
options.setVerticalAlignment(VerticalAlignment.Bottom);
options.setHorizontalAlignment(HorizontalAlignment.Right);
Padding padding = new Padding();
padding.setBottom(20);
padding.setRight(20);
options.setMargin(padding);
// set text color and Font
options.setForeColor(Color.RED);
SignatureFont signatureFont = new SignatureFont();
signatureFont.setSize(12);
signatureFont.setFamilyName("Comic Sans MS");
options.setFont(signatureFont);
 
 
// sign document to file
SignResult signResult = signature.sign("signed.pdf", options);
// 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());
}

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.

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