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javapdfpdfboxopenpdf
karthi keyan
karthi keyan

Reputation: 253

Retrieving coordindates of PDF signature form fields in Java

I want to know how to retrieve the coordinates of signature form fields in a PDF using PDFBOX or OpenPDF. The input PDF contains an electronic signature which is digitally signed.

Looking forward for your Help.

Upvotes: 0

Views: 1051

Answers (1)

Lonzak
Lonzak

Reputation: 9816

Placeholder means unsigned signature for me but you mentioned signed fields. But I write you both solutions for openPDF:

PdfReader reader = new PdfReader(...)
AcroFields fields = reader.getAcroFields();
//unsigned signatures
//ArrayList<String> al = fields.getBlankSignatureNames();
//signed signatures
ArrayList<String> al = fields.getSignatureNames();     

for (int i = 0; i < al.size(); i++) {

 String fieldName = al.get(i);
 float[] position = fields.getFieldPositions(fieldName);

 //assuming that signatures doesn't have several widgets. (like it can be for other fields)
 for(int i=0;i<position.length;i+=5){
    int pageNumber = (int) position[0];
    float lowerLeftX = position[1]; 
    float lowerLeftY = position[2];
    float upperRightX = position[3];
    float upperRightY = position[4];
    System.out.println("llx:"+lowerLeftX+" lly:"+lowerLeftY+" urx:"+upperRightX+" ury: "upperRightY);
 }

Upvotes: 1

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