Java Tutorial/PDF/Page Event

extends PdfPageEventHelper

   <source lang="java">

import java.awt.Color; import java.io.FileOutputStream; import com.lowagie.text.Chunk; import com.lowagie.text.Document; 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 MainClass {

 public static void main(String[] args) throws Exception {
   Document document = new Document();
   PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
   writer.setPageEvent(new MyPdfPageEventHelper());
   document.open();
   Paragraph p = new Paragraph();
   Chunk fox = new Chunk("test");
   fox.setGenericTag("box");
   p.add(fox);
   p.add(" this is a test ");
   Chunk dog = new Chunk("test ");
   dog.setGenericTag("ellipse");
   p.add(dog);
   document.add(p);
   document.close();
 }

} class MyPdfPageEventHelper extends PdfPageEventHelper {

 public void onGenericTag(PdfWriter writer, Document document, Rectangle rect, String text) {
   if ("ellipse".equals(text)) {
     PdfContentByte cb = writer.getDirectContent();
     cb.setRGBColorStroke(0xFF, 0x00, 0x00);
     cb.ellipse(rect.left(), rect.bottom() - 5f, rect.right(), rect.top());
     cb.stroke();
     cb.resetRGBColorStroke();
   } else if ("box".equals(text)) {
     PdfContentByte cb = writer.getDirectContentUnder();
     rect.setBackgroundColor(new Color(0xa5, 0x2a, 0x2a));
     cb.rectangle(rect);
   }
 }

}</source>

Pdf document footer

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Chunk; import com.lowagie.text.Document; import com.lowagie.text.Element; import com.lowagie.text.Phrase; import com.lowagie.text.pdf.ColumnText; import com.lowagie.text.pdf.PdfAction; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfPTable; import com.lowagie.text.pdf.PdfPageEventHelper; import com.lowagie.text.pdf.PdfWriter; public class MainClass extends PdfPageEventHelper {

 protected Phrase header = new Phrase("header");
 protected PdfPTable footer = new PdfPTable(4);
 public MainClass() {
   footer.setTotalWidth(300);
   footer.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER);
   footer.addCell(new Phrase(new Chunk("First").setAction(new PdfAction(PdfAction.FIRSTPAGE))));
   footer.addCell(new Phrase(new Chunk("Prev").setAction(new PdfAction(PdfAction.PREVPAGE))));
   footer.addCell(new Phrase(new Chunk("Next").setAction(new PdfAction(PdfAction.NEXTPAGE))));
   footer.addCell(new Phrase(new Chunk("Last").setAction(new PdfAction(PdfAction.LASTPAGE))));
 }
 public void onEndPage(PdfWriter writer, Document document) {
   PdfContentByte cb = writer.getDirectContent();
   if (document.getPageNumber() > 1) {
     ColumnText.showTextAligned(cb, Element.ALIGN_CENTER, header, (document.right() - document
         .left())
         / 2 + document.leftMargin(), document.top() + 10, 0);
   }
   footer.writeSelectedRows(0, -1, (document.right() - document.left() - 300) / 2
       + document.leftMargin(), document.bottom() - 10, cb);
 }
 public static void main(String[] args) throws Exception {
   Document document = new Document();
   PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
   writer.setViewerPreferences(PdfWriter.PageLayoutTwoColumnLeft);
   writer.setPageEvent(new MainClass());
   document.open();
   for (int k = 1; k <= 300; ++k) {
     document.add(new Phrase("test "));
   }
   document.close();
 }

}</source>

Pdf events: on chapter, on chapter end, on section, on document Close Document

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Chapter; import com.lowagie.text.Chunk; import com.lowagie.text.Document; import com.lowagie.text.DocumentException; import com.lowagie.text.Font; import com.lowagie.text.PageSize; import com.lowagie.text.Paragraph; import com.lowagie.text.Section; import com.lowagie.text.pdf.PdfPageEventHelper; import com.lowagie.text.pdf.PdfWriter; import com.lowagie.tools.plugins.Concat; public class MainClass extends PdfPageEventHelper {

 protected Document toc = new Document();
 public MainClass() throws Exception {
   PdfWriter.getInstance(toc, new FileOutputStream("toc.pdf"));
   toc.open();
 }
 public void onChapter(PdfWriter writer, Document document, float position, Paragraph title) {
   try {
     toc.add(new Paragraph(title.content() + " page " + document.getPageNumber()));
   } catch (DocumentException e) {
     e.printStackTrace();
   }
 }
 public void onChapterEnd(PdfWriter writer, Document document, float position) {
   try {
     toc.add(Chunk.NEWLINE);
   } catch (DocumentException e) {
     e.printStackTrace();
   }
 }
 public void onSection(PdfWriter writer, Document document, float position, int depth,
     Paragraph title) {
   try {
     switch (depth) {
     case 2:
       toc.add(new Paragraph(title.content(), new Font(Font.HELVETICA, 10)));
       break;
     default:
       toc.add(new Paragraph(title.content(), new Font(Font.HELVETICA, 8)));
     }
   } catch (DocumentException e) {
     e.printStackTrace();
   }
 }
 public void onCloseDocument(PdfWriter writer, Document document) {
   toc.close();
 }
 public static void main(String[] args) throws Exception {
   Document document = new Document();
   PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("chapter_events.pdf"));
   writer.setPageEvent(new MainClass());
   document.open();
   Paragraph hello = new Paragraph("hello");
   Chapter universe = new Chapter("asdf", 1);
   Section section;
   section = universe.addSection("World");
   section.add(hello);
   Section planets = universe.addSection("Planets");
   planets.add(hello);
   section = planets.addSection("to Venus:");
   section.add(hello);
   document.add(universe);
   Chapter people = new Chapter("People", 2);
   section = people.addSection("asasdf");
   section.add(hello);
   document.add(people);
   document.setPageSize(PageSize.A4.rotate());
   Chapter animals = new Chapter("3", 3);
   section = animals.addSection("section");
   section.add(hello);
   document.add(animals);
   document.close();
   String[] arguments = { "toc.pdf", "chapter_events.pdf", "toc_chapters.pdf" };
   Concat.main(arguments);
 }

}</source>

Pdf Page Event Helper

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.Element; import com.lowagie.text.ExceptionConverter; import com.lowagie.text.Paragraph; import com.lowagie.text.Phrase; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfPageEventHelper; import com.lowagie.text.pdf.PdfTemplate; import com.lowagie.text.pdf.PdfWriter; public class MainClass extends PdfPageEventHelper {

 protected PdfTemplate total;
 protected BaseFont helv;
 public void onOpenDocument(PdfWriter writer, Document document) {
   total = writer.getDirectContent().createTemplate(100, 100);
   total.setBoundingBox(new Rectangle(-20, -20, 100, 100));
   try {
     helv = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
   } catch (Exception e) {
     throw new ExceptionConverter(e);
   }
 }
 public void onEndPage(PdfWriter writer, Document document) {
   PdfContentByte cb = writer.getDirectContent();
   cb.saveState();
   String text = "Page " + writer.getPageNumber() + " of ";
   cb.beginText();
   cb.setFontAndSize(helv, 12);
   cb.showText(text);
   cb.endText();
   cb.restoreState();
 }
 public void onCloseDocument(PdfWriter writer, Document document) {
   total.beginText();
   total.setFontAndSize(helv, 12);
   total.setTextMatrix(0, 0);
   total.showText(String.valueOf(writer.getPageNumber() - 1));
   total.endText();
 }
 public static void main(String[] args) throws Exception {
   Document document = new Document();
   PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
   writer.setPageEvent(new MainClass());
   document.open();
   Paragraph p = new Paragraph();
   for (int k = 1; k <= 3000; ++k) {
     p.add(new Phrase("test"));
   }
   p.setAlignment(Element.ALIGN_JUSTIFIED);
   for (int k = 1; k <= 12; ++k) {
     document.add(p);
   }
   document.close();
 }

}</source>

Set PageEvent to Pdf document

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.Paragraph; import com.lowagie.text.Phrase; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.ColumnText; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfPageEventHelper; import com.lowagie.text.pdf.PdfWriter; public class MainClass extends PdfPageEventHelper {

 BaseFont bf;
 public void onOpenDocument(PdfWriter arg0, Document arg1) {
   try {
     bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
   } catch (Exception e) {
     bf = null;
   }
 }
 public void onEndPage(PdfWriter writer, Document document) {
   PdfContentByte cb = writer.getDirectContent();
   cb.saveState();
   Rectangle pageSize = writer.getPageSize();
   Rectangle art = writer.getBoxSize("bleed");
   cb.rectangle(art.left(), art.bottom(), art.width(), art.height());
   cb.stroke();
   cb.setLineWidth(3);
   cb.restoreState();
 }
 public static void main(String[] args) throws Exception {
   Document document = new Document(new Rectangle(432, 792));
   PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
   writer.setViewerPreferences(PdfWriter.PageLayoutTwoPageLeft);
   writer.setPageEvent(new MainClass());
   writer.setCropBoxSize(new Rectangle(5, 5, 427, 787));
   writer.setBoxSize("bleed", new Rectangle(30, 30, 402, 762));
   document.open();
   PdfContentByte cb = writer.getDirectContent();
   ColumnText ct = new ColumnText(cb);
   Paragraph p = new Paragraph();
   for (int i = 0; i < 10; i++) {
     p.add(new Phrase("test "));
   }
   for (int i = 0; i < 10; i++) {
     ct.addElement(p);
   }
   int status = ColumnText.NO_MORE_COLUMN;
   while (ColumnText.hasMoreText(status)) {
     ct.setSimpleColumn(72, 72, 360, 684);
     status = ct.go();
     document.newPage();
   }
   document.close();
 }

}</source>

Transition and Duration

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.Image; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.PdfPageEventHelper; import com.lowagie.text.pdf.PdfTransition; import com.lowagie.text.pdf.PdfWriter; public class MainClass extends PdfPageEventHelper {

 protected PdfTransition transition;
 protected int duration;
 public MainClass(PdfTransition transition, int duration) {
   this.transition = transition;
   this.duration = duration;
 }
 public void setTransition(PdfTransition transition) {
   this.transition = transition;
 }
 public void setDuration(int duration) {
   this.duration = duration;
 }
 public void onStartPage(PdfWriter writer, Document document) {
   writer.setTransition(transition);
   writer.setDuration(duration);
 }
 public static void main(String[] args) throws Exception {
   Document document = new Document(new Rectangle(144, 115));
   PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
   writer.setPdfVersion(PdfWriter.VERSION_1_5);
   writer.setViewerPreferences(PdfWriter.PageModeFullScreen);
   MainClass slideshow = new MainClass(new PdfTransition(PdfTransition.OUTBOX), 1);
   writer.setPageEvent(slideshow);
   document.open();
   Image img0 = Image.getInstance("0.gif");
   img0.setAbsolutePosition(0, 0);
   document.add(img0);
   document.newPage();
   Image img1 = Image.getInstance("1.gif");
   img1.setAbsolutePosition(0, 0);
   document.add(img1);
   document.newPage();
   document.close();
 }

}</source>