Change the content of a button

Tags: formspushbutton fieldiText 7
Files: 
/*
 
    This file is part of the iText (R) project.
    Copyright (c) 1998-2016 iText Group NV
 
*/
 
/**
 * This example was written by Bruno Lowagie in answer to the following question:
 * http://stackoverflow.com/questions/26804092/itext-button-resize-affects-label
 */
package com.itextpdf.samples.sandbox.acroforms;
 
import com.itextpdf.forms.PdfAcroForm;
import com.itextpdf.forms.fields.PdfFormField;
import com.itextpdf.kernel.pdf.*;
import com.itextpdf.samples.GenericTest;
import com.itextpdf.test.annotations.type.SampleTest;
import org.junit.experimental.categories.Category;
 
import java.io.File;
 
@Category(SampleTest.class)
public class ChangeButton extends GenericTest {
    public static final String DEST = "./target/test/resources/sandbox/acroforms/change_button.pdf";
    public static final String SRC = "./src/test/resources/pdfs/hello_button.pdf";
 
    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new ChangeButton().manipulatePdf(DEST);
    }
 
    @Override
    protected void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(DEST));
        PdfAcroForm form = PdfAcroForm.getAcroForm(pdfDoc, true);
        PdfFormField button = form.copyField("Test");
        PdfArray rect = button.getWidgets().get(0).getRectangle();
        rect.set(2, new PdfNumber(rect.getAsNumber(2).floatValue() + 172));
        button.setValue("Print Amended");
        form.replaceField("Test", button);
        pdfDoc.close();
    }
}
File nameRaw URLUpdated
ChangeButton.javaChangeButton.java2016-08-09 3:59 pm
Resources: 
File nameRaw URLUpdated
hello_button.pdfhello_button.pdf2016-08-09 4:02 pm
Results: 
File nameRaw URLUpdated
cmp_change_button.pdfcmp_change_button.pdf2016-08-09 4:04 pm