/*
* $Id: OrderedLayers.java 3838 2009-04-07 18:34:15Z mstorer $
*
* 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.directcontent.optionalcontent;
import java.awt.Color;
import java.io.FileOutputStream;
import com.lowagie.text.Document;
import com.lowagie.text.Element;
import com.lowagie.text.Font;
import com.lowagie.text.PageSize;
import com.lowagie.text.Phrase;
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.PdfWriter;
/**
* Demonstrates how to order optional content groups.
*/
public class OrderedLayers {
/**
* Demonstrates how to order optional content groups.
* @param args no arguments needed
*/
public static void main(String[] args) {
System.out.println("Ordering optional content groups");
try {
// step 1
Document document = new Document(PageSize.A4, 50, 50, 50, 50);
// step 2
PdfWriter writer = PdfWriter.getInstance(document,
new FileOutputStream("orderedlayers.pdf"));
writer.setPdfVersion(PdfWriter.VERSION_1_5);
writer.setViewerPreferences(PdfWriter.PageModeUseOC);
// step 3
document.open();
// step 4
PdfContentByte cb = writer.getDirectContent();
Phrase explanation = new Phrase("Ordered layers", new Font(
Font.HELVETICA, 20, Font.BOLD, Color.red));
ColumnText.showTextAligned(cb, Element.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);
Phrase p1 = new Phrase("Text in layer 1");
Phrase p2 = new Phrase("Text in layer 2 or layer 3");
Phrase p3 = new Phrase("Text in layer 3");
cb.beginLayer(l1);
ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, p1, 50, 600, 0);
cb.endLayer();
cb.beginLayer(m1);
ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, p2, 50, 550, 0);
cb.endLayer();
cb.beginLayer(l3);
ColumnText.showTextAligned(cb, Element.ALIGN_LEFT, p3, 50, 500, 0);
cb.endLayer();
cb.sanityCheck();
PdfOCProperties p = writer.getOCProperties();
PdfArray order = new PdfArray();
order.add(l1.getRef());
order.add(l2.getRef());
order.add(l3.getRef());
PdfDictionary d = new PdfDictionary();
d.put(PdfName.ORDER, order);
p.put(PdfName.D, d);
// step 5
document.close();
} catch (Exception de) {
de.printStackTrace();
}
}
}