classroom.newspaper_b.Newspaper09.java Source code

Introduction

Here is the source code for classroom.newspaper_b.Newspaper09.java

Source

/*
 * This example was written by Bruno Lowagie, author of the book
 * 'iText in Action' by Manning Publications (ISBN: 1932394796).
 * You can use this example as inspiration for your own applications.
 * The following license applies:
 * http://www.1t3xt.com/about/copyright/index.php?page=MIT
 */

package classroom.newspaper_b;

import java.io.FileOutputStream;
import java.io.IOException;

import classroom.newspaper_a.Newspaper;

import com.lowagie.text.DocumentException;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfAction;
import com.lowagie.text.pdf.PdfAnnotation;
import com.lowagie.text.pdf.PdfArray;
import com.lowagie.text.pdf.PdfDictionary;
import com.lowagie.text.pdf.PdfName;
import com.lowagie.text.pdf.PdfNumber;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfStamper;
import com.lowagie.text.pdf.PdfString;
import com.lowagie.text.pdf.PushbuttonField;

public class Newspaper09 extends Newspaper {

    public static final String RESULT = RESULTPATH + "newspaper09.pdf";

    public static void main(String[] args) {
        try {
            PdfReader reader = new PdfReader(NEWSPAPER);
            PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(RESULT));

            PdfAnnotation annotation1 = PdfAnnotation.createSquareCircle(stamper.getWriter(),
                    new Rectangle(LLX1, LLY1, URX1, URY1), MESSAGE, true);
            annotation1.put(PdfName.T, new PdfString("Advertisement 1"));
            annotation1.put(PdfName.C, new PdfArray(new float[] { 1, 0, 0 }));
            stamper.addAnnotation(annotation1, 1);

            PdfAnnotation annotation2 = PdfAnnotation.createText(stamper.getWriter(),
                    new Rectangle(LLX2, LLY2, URX2, URY2), "Advertisement 2", MESSAGE, false, null);
            annotation2.put(PdfName.NM, new PdfString("ad2"));
            // the text must be read only, and the annotation set to NOVIEW
            annotation2.put(PdfName.F, new PdfNumber(PdfAnnotation.FLAGS_READONLY | PdfAnnotation.FLAGS_NOVIEW));

            // we create a popup annotation that will define where the rectangle will appear
            PdfAnnotation popup = PdfAnnotation.createPopup(stamper.getWriter(),
                    new Rectangle(LLX2 + 50, LLY2 + 120, URX2 - 80, URY2 - 120), null, false);

            // we add a reference to the text annotation to the popup annotation
            popup.put(PdfName.PARENT, annotation2.getIndirectReference());
            // we add a reference to the popup annotation to the text annotation
            annotation2.put(PdfName.POPUP, popup.getIndirectReference());

            // we add both annotations to the writer
            stamper.addAnnotation(annotation2, 1);
            stamper.addAnnotation(popup, 1);

            // the text annotation can't be viewed (it's invisible)
            // we create a widget annotation named mywidget (it's a button field)
            PushbuttonField field = new PushbuttonField(stamper.getWriter(), new Rectangle(LLX2, LLY2, URX2, URY2),
                    "button");
            PdfAnnotation widget = field.getField();
            PdfDictionary dict = new PdfDictionary();
            // we write some javascript that makes the popup of the text annotation visible/invisible on mouse enter/exit
            String js1 = "var t = this.getAnnot(this.pageNum, 'ad2'); t.popupOpen = true; var w = this.getField('button'); w.setFocus();";
            PdfAction enter = PdfAction.javaScript(js1, stamper.getWriter());
            dict.put(PdfName.E, enter);
            String js2 = "var t = this.getAnnot(this.pageNum, 'ad2'); t.popupOpen = false;";
            PdfAction exit = PdfAction.javaScript(js2, stamper.getWriter());
            dict.put(PdfName.X, exit);
            // we add the javascript as additional action
            widget.put(PdfName.AA, dict);
            // we add the button field
            stamper.addAnnotation(widget, 1);

            stamper.close();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (DocumentException e) {
            e.printStackTrace();
        }
    }
}