CODEWITHSUNDEEP
javaitext
Deepak Singh
Deepak Singh

Reputation: 94

adding annotations while copying a pdf file to another

I am trying to add annotations to every Page which gets copied to my new pdf but not able to do that...

Here is my code.

import com.lowagie.text.Document;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.*;

import java.awt.*;
import java.io.FileOutputStream;


public class Annotations {

    public static void main(String[] args) {

        try {

            PdfReader reader = new PdfReader("string-to-pdf.pdf");
            Document document = new Document(reader.getPageSizeWithRotation(1));
            PdfCopy copy = new PdfCopy(document,
                    new FileOutputStream("temp.pdf"));
            copy.setPdfVersion(PdfWriter.VERSION_1_5);
            document.open();
            for(int i = 1; i <=reader.getNumberOfPages();i++){
                copy.addPage(copy.getImportedPage(reader,i));
                copy.addAnnotation(PdfAnnotation.createLink(copy, new Rectangle(200f, 700f, 30455454f, 800f), PdfAnnotation.HIGHLIGHT_TOGGLE, PdfAction.javaScript("app.alert('Hello');\r", copy)));
            }

            document.newPage();
            // page 3
            PdfContentByte pcb = new PdfContentByte(copy);
            pcb.setColorFill(new Color(0xFF, 0x00, 0x00));

            document.close();

        } catch (Exception de) {
            de.printStackTrace();
        }
    }
}

the files are getting copied but can't see the annotations in the new file.

Upvotes: 0

Views: 564

Answers (1)

mkl
mkl

Reputation: 96064

PdfCopy is for faithful page copying, not for creation; thus, modification routines inherited from PdfWriter are disabled, e.g. 

@Override
public void addAnnotation(PdfAnnotation annot) {  }

Dedicated manipulations are possible, though, by means of page stamps, cf. createPageStamp. The JavaDocs of that method contain some example usage code including an addition of an annotation:

PdfImportedPage page = copy.getImportedPage(reader, 1);
PdfCopy.PageStamp ps = copy.createPageStamp(page);
ps.addAnnotation(PdfAnnotation.createText(copy, new Rectangle(50, 180, 70, 200), "Hello", "No Thanks", true, "Comment"));
PdfContentByte under = ps.getUnderContent();
under.addImage(img);
PdfContentByte over = ps.getOverContent();
over.beginText();
over.setFontAndSize(bf, 18);
over.setTextMatrix(30, 30);
over.showText("total page " + totalPage);
over.endText();
ps.alterContents();
copy.addPage(page);

Beware, though, applying a PageStamp like this actually manipulates the original PdfReader. Afterwards, therefore, don't continue using the PdfReader instance assuming its contents are the original contents, in particular the pagestamped copied pages are dirty.

Upvotes: 2

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