LayersGroupPDF.java Source code

Introduction

Here is the source code for LayersGroupPDF.java

Source

import java.io.FileOutputStream;

import com.lowagie.text.Document;
import com.lowagie.text.pdf.PdfArray;
import com.lowagie.text.pdf.PdfDictionary;
import com.lowagie.text.pdf.PdfLayer;
import com.lowagie.text.pdf.PdfLayerMembership;
import com.lowagie.text.pdf.PdfName;
import com.lowagie.text.pdf.PdfOCProperties;
import com.lowagie.text.pdf.PdfObject;
import com.lowagie.text.pdf.PdfString;
import com.lowagie.text.pdf.PdfWriter;

public class LayersGroupPDF {
    public static void main(String[] args) {
        Document document = new Document();
        try {
            PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("LayersGroupPDF.pdf"));
            writer.setPdfVersion(PdfWriter.VERSION_1_5);

            writer.setViewerPreferences(PdfWriter.PageModeUseOC);
            document.open();

            PdfLayer l1 = new PdfLayer("Layer 1", writer);
            PdfLayer l2 = new PdfLayer("Layer 2", writer);
            PdfLayer l3 = new PdfLayer("Layer 3", writer);
            PdfLayerMembership m1 = new PdfLayerMembership(writer);
            m1.addMember(l1);
            m1.addMember(l2);
            m1.addMember(l3);

            PdfOCProperties p = writer.getOCProperties();
            PdfArray order = new PdfArray();
            order.add(l1.getRef());
            PdfArray group = new PdfArray();
            group.add(new PdfString("A group of two", PdfObject.TEXT_UNICODE));
            group.add(l2.getRef());
            group.add(l3.getRef());
            order.add(group);
            PdfDictionary d = new PdfDictionary();
            d.put(PdfName.ORDER, order);
            p.put(PdfName.D, d);
        } catch (Exception e) {
            System.err.println(e.getMessage());
        }
        document.close();
    }
}