/*
* $Id$
*
* 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.chunk;
import java.io.FileOutputStream;
import java.io.IOException;
import com.lowagie.text.Chunk;
import com.lowagie.text.LwgDocument;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Paragraph;
import com.lowagie.text.LwgRectangle;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfPageEventHelper;
import com.lowagie.text.pdf.PdfWriter;
/**
* Demonstrates the use of the Generic PageEvent.
*
* @author blowagie
*/
public class Generic extends PdfPageEventHelper {
/**
* Draws an ellipse if the text was ellipse, a box if the text was box.
*
* @see com.lowagie.text.pdf.PdfPageEventHelper#onGenericTag(com.lowagie.text.pdf.PdfWriter, com.lowagie.text.Document, com.lowagie.text.LwgRectangle, java.lang.String)
*/
public void onGenericTag(PdfWriter writer, LwgDocument document, LwgRectangle rect, String text) {
if ("ellipse".equals(text)) {
PdfContentByte cb = writer.getDirectContent();
cb.setRGBColorStroke(0xFF, 0x00, 0x00);
cb.ellipse(rect.getLeft(), rect.getBottom() - 5f, rect.getRight(), rect.getTop());
cb.stroke();
cb.resetRGBColorStroke();
}
else if ("box".equals(text)) {
PdfContentByte cb = writer.getDirectContentUnder();
rect.setGrayFill(0.5f);
cb.rectangle(rect);
}
}
/**
* Generic page event.
*
* @param args no arguments needed here
*/
public static void main(String[] args) {
System.out.println("Generic");
// step 1: creation of a document-object
LwgDocument document = new LwgDocument();
try {
// step 2:
// we create a writer that listens to the document
PdfWriter writer = PdfWriter.getInstance(document,
new FileOutputStream("Generic.pdf"));
writer.setPageEvent(new Generic());
// step 3: we open the document
document.open();
// step 4:
Paragraph p = new Paragraph("Generic page event");
document.add(p);
Chunk box = new Chunk("box");
box.setGenericTag("box");
Chunk ellipse = new Chunk("ellipse");
ellipse.setGenericTag("ellipse");
p = new Paragraph("In this example, we will add chunks that are tagged as an ");
p.add(ellipse);
p.add(" and chunks that are tagged as a ");
p.add(box);
p.add(". Can you see the difference between ");
Chunk c1 = new Chunk("this");
c1.setGenericTag("box");
Chunk c2 = new Chunk("that");
c2.setGenericTag("ellipse");
p.add(c1);
p.add(" and ");
p.add(c2);
p.add("? One is a ");
p.add(box);
p.add("; the other an ");
p.add(ellipse);
document.add(p);
} catch (DocumentException de) {
System.err.println(de.getMessage());
} catch (IOException ioe) {
System.err.println(ioe.getMessage());
}
// step 5: we close the document
document.close();
}
}