Java/PDF RTF/Document Page Event

Document Page Event: document open, close, page start and end

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.Image; import com.lowagie.text.PageSize; import com.lowagie.text.Paragraph; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfGState; import com.lowagie.text.pdf.PdfPTable; import com.lowagie.text.pdf.PdfPageEventHelper; import com.lowagie.text.pdf.PdfTemplate; import com.lowagie.text.pdf.PdfWriter; public class DocumentPageEventPDF extends PdfPageEventHelper {

 public Image headerImage;
 public PdfPTable table;
 public PdfGState gstate;
 public PdfTemplate tpl;
 public BaseFont helv;
 public static void main(String args[]) {
   try {
     Document doc = new Document(PageSize.A4, 50, 50, 100, 72);
     PdfWriter writer = PdfWriter.getInstance(doc, new FileOutputStream("DocumentPageEventPDF.pdf"));
     writer.setPageEvent(new DocumentPageEventPDF());
     doc.open();
     Paragraph p = new Paragraph("text");
     doc.add(p);
     doc.close();
   } catch (Exception e) {
     e.printStackTrace();
   }
 }
 public void onOpenDocument(PdfWriter writer, Document document) {
   System.out.println("onOpenDocument");
 }
 public void onEndPage(PdfWriter writer, Document document) {
   System.out.println("onEndPage");
 }
 public void onStartPage(PdfWriter writer, Document document) {
   System.out.println("onStartPage");
 }
 public void onCloseDocument(PdfWriter writer, Document document) {
   System.out.println("onCloseDocument");
 }

}

      </source>
   
  
 
  

PdfEvents: on generic tags, on chapter

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.PageSize; import com.lowagie.text.Paragraph; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.PdfPageEventHelper; import com.lowagie.text.pdf.PdfWriter; public class PdfEvents {

 public static void main(String[] args) {
   Document document = new Document(PageSize.A4, 80, 50, 30, 65);
   try {
     
     PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("PdfEvents.pdf"));
     document.open();
     writer.setPageEvent(new MyPageEvents());
     document.newPage();
     document.add(new Paragraph("Text"));
     document.close();
   } catch (Exception e) {
     System.err.println(e.getMessage());
   }
 }

} class MyPageEvents extends PdfPageEventHelper {

 public void onGenericTag(PdfWriter writer, Document document,  Rectangle rect, String text) {
   System.out.println("onGenericTag");
   
 }
 public void onOpenDocument(PdfWriter writer, Document document) {
   System.out.println("onOpenDocument");
 }
 public void onChapter(PdfWriter writer, Document document, float paragraphPosition, Paragraph title) {
   System.out.println("onChapter");
 }
 public void onEndPage(PdfWriter writer, Document document) {
   System.out.println("onEndPage");
 }
 public void onCloseDocument(PdfWriter writer, Document document) {
   System.out.println("onCloseDocument");
 }

}

      </source>
   
  
 
  

PdfPageEvent: on Paragraph

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.Font; import com.lowagie.text.PageSize; import com.lowagie.text.Paragraph; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfDestination; import com.lowagie.text.pdf.PdfOutline; import com.lowagie.text.pdf.PdfPageEventHelper; import com.lowagie.text.pdf.PdfWriter; public class OnParagraphEventPDF extends PdfPageEventHelper {

   public void onParagraph(PdfWriter writer, Document document, float position) {
     System.out.println("onParagraph");
   }
 public static void main(String[] args) {
   Document document = new Document(PageSize.A6);
   try {
     PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("OnParagraphEventPDF.pdf"));
     writer.setViewerPreferences(PdfWriter.PageModeUseOutlines);
     document.open();
     writer.setPageEvent(new OnParagraphEventPDF());
           
     document.add(new Paragraph("Text.", new Font(Font.HELVETICA, 12)));
     document.add(new Paragraph("Text.", new Font(Font.HELVETICA, 12)));
     document.add(new Paragraph("Text.", new Font(Font.HELVETICA, 12)));
     document.add(new Paragraph("Text.", new Font(Font.HELVETICA, 12)));
     document.add(new Paragraph("Text.", new Font(Font.HELVETICA, 12)));
   } catch (Exception de) {
     de.printStackTrace();
   }
   document.close();
 }

}

      </source>
   
  
 
  

PdfPageEvent: page end

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.PageSize; import com.lowagie.text.Paragraph; import com.lowagie.text.pdf.PdfPageEventHelper; import com.lowagie.text.pdf.PdfWriter; public class OnEndPageEventPDF extends PdfPageEventHelper {

   public static void main(String[] args)
   {
       Document document = new Document(PageSize.A4, 50, 50, 70, 70);
       try {
           PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("OnEndPageEventPDF.pdf"));
           writer.setPageEvent(new OnEndPageEventPDF());
           document.open();
           
           document.add(new Paragraph("text"));
           document.close();
       }
       catch (Exception de) {
           de.printStackTrace();
       }
   }
   
   public void onEndPage(PdfWriter writer, Document document) {
      System.out.println("on page end event call back");
   }

}

      </source>
   
  
 
  

Using Pdf event to build the Pdf document

   <source lang="java">

import java.io.FileOutputStream; import java.io.IOException; import com.lowagie.text.Chunk; import com.lowagie.text.Document; import com.lowagie.text.DocumentException; import com.lowagie.text.Paragraph; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfPageEventHelper; import com.lowagie.text.pdf.PdfWriter; public class PdfPageEventHelperDemo extends PdfPageEventHelper {

 public void onGenericTag(PdfWriter writer, Document document, Rectangle rect, String text) {
   if ("text".equals(text)) {
     PdfContentByte cb = writer.getDirectContent();
     cb.ellipse(rect.left(), rect.bottom() - 5f, rect.right(), rect.top());
     cb.stroke();
   }
 }
 public static void main(String[] args) {
   Document document = new Document();
   try {
     PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("PdfPageEventHelperDemo.pdf"));
     writer.setPageEvent(new PdfPageEventHelperDemo());
     document.open();
     Paragraph p = new Paragraph("Generic page event");
     document.add(p);
     
     Chunk box = new Chunk("text");
     box.setGenericTag("text");
     
     p.add(box);
     document.add(p);
   } catch (Exception e) {
     System.err.println(e.getMessage());
   }
   document.close();
 }

}

      </source>