/*
* $Id$
*
* This code is part of the 'iText Tutorial'.
* You can find the complete tutorial at the following address:
* http://itextdocs.lowagie.com/tutorial/
*
* This code is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* itext-questions@lists.sourceforge.net
*/
package com.lowagie.examples.objects.bookmarks;
import java.awt.Color;
import java.io.FileOutputStream;
import java.io.IOException;
import com.lowagie.text.LwgDocument;
import com.lowagie.text.DocumentException;
import com.lowagie.text.LwgElement;
import com.lowagie.text.LwgFont;
import com.lowagie.text.LwgPhrase;
import com.lowagie.text.pdf.ColumnText;
import com.lowagie.text.pdf.PdfArray;
import com.lowagie.text.pdf.PdfContentByte;
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;
/**
* Demonstrates how layers work.
*
* @author blowagie
*/
public class Layers {
/**
* Demonstrates some Layer functionality.
*
* @param args
* no arguments needed here
*/
public static void main(String[] args) {
System.out.println("layers");
// step 1: creation of a document-object
LwgDocument document = new LwgDocument();
try {
// step 2:
PdfWriter writer = PdfWriter.getInstance(document,
new FileOutputStream("Layers.pdf"));
writer.setPdfVersion(PdfWriter.VERSION_1_5);
// step 3:
writer.setViewerPreferences(PdfWriter.PageModeUseOC);
document.open();
// step 4:
PdfContentByte cb = writer.getDirectContent();
LwgPhrase explanation = new LwgPhrase("Layer grouping", new LwgFont(
LwgFont.HELVETICA, 20, LwgFont.BOLD, Color.red));
ColumnText.showTextAligned(cb, LwgElement.ALIGN_LEFT, explanation, 50,
650, 0);
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(l2);
m1.addMember(l3);
LwgPhrase p1 = new LwgPhrase("Text in layer 1");
LwgPhrase p2 = new LwgPhrase("Text in layer 2 or layer 3");
LwgPhrase p3 = new LwgPhrase("Text in layer 3");
cb.beginLayer(l1);
ColumnText.showTextAligned(cb, LwgElement.ALIGN_LEFT, p1, 50, 600, 0);
cb.endLayer();
cb.beginLayer(m1);
ColumnText.showTextAligned(cb, LwgElement.ALIGN_LEFT, p2, 50, 550, 0);
cb.endLayer();
cb.beginLayer(l3);
ColumnText.showTextAligned(cb, LwgElement.ALIGN_LEFT, p3, 50, 500, 0);
cb.endLayer();
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 (DocumentException de) {
System.err.println(de.getMessage());
} catch (IOException ioe) {
System.err.println(ioe.getMessage());
}
// step 5: we close the document
document.close();
}
}