Mega Code Archive
Add page event listener to PDF writer
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import java.io.FileOutputStream;
import java.util.HashMap;
import java.util.Iterator;
import com.lowagie.text.Chunk;
import com.lowagie.text.Document;
import com.lowagie.text.Font;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfPageEventHelper;
import com.lowagie.text.pdf.PdfWriter;
public class MainClass {
public static void main(String[] args) throws Exception {
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
MyPdfPageEventHelper tracker = new MyPdfPageEventHelper();
writer.setPageEvent(tracker);
document.open();
document.add(createParagraph("Fox", "Hello lazy dog."));
document.newPage();
HashMap lines = tracker.getLines();
for (Iterator i = lines.keySet().iterator(); i.hasNext();) {
String speaker = (String) i.next();
Integer count = (Integer) lines.get(speaker);
document.add(new Paragraph(speaker + ": " + count.intValue() + " lines."));
}
document.close();
}
private static Paragraph createParagraph(String speaker, String line) {
Paragraph p = new Paragraph(18);
Chunk s = new Chunk(speaker + ": ", new Font(Font.HELVETICA, 12, Font.BOLD));
s.setGenericTag(speaker);
p.add(s);
p.add(line);
return p;
}
}
class MyPdfPageEventHelper extends PdfPageEventHelper {
protected HashMap lines = new HashMap();
public void onGenericTag(PdfWriter writer, Document document, Rectangle rect, String text) {
Integer count = (Integer) lines.get(text);
if (count == null) {
lines.put(text, new Integer(1));
} else {
lines.put(text, new Integer(count.intValue() + 1));
}
}
public HashMap getLines() {
return lines;
}
}
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