/**
 * Example written by Bruno Lowagie in answer to:
 * http://stackoverflow.com/questions/27780756/adding-footer-with-itext-doesnt-work
 */
package sandbox.events;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Font;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfPageEventHelper;
import com.itextpdf.text.pdf.PdfWriter;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import sandbox.WrapToTest;

@WrapToTest
public class TextFooter {
    
    class MyFooter extends PdfPageEventHelper {
        Font ffont = new Font(Font.FontFamily.UNDEFINED, 5, Font.ITALIC);
            
        public void onEndPage(PdfWriter writer, Document document) {
            PdfContentByte cb = writer.getDirectContent();
            Phrase header = new Phrase("this is a header", ffont);
            Phrase footer = new Phrase("this is a footer", ffont);
            ColumnText.showTextAligned(cb, Element.ALIGN_CENTER,
                    header,
                    (document.right() - document.left()) / 2 + document.leftMargin(),
                    document.top() + 10, 0);
            ColumnText.showTextAligned(cb, Element.ALIGN_CENTER,
                    footer,
                    (document.right() - document.left()) / 2 + document.leftMargin(),
                    document.bottom() - 10, 0);
        }
    }
    
    public static final String DEST = "results/events/page_footer.pdf";
    
    public static void main(String[] args) throws IOException, DocumentException {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new TextFooter().createPdf(DEST);
    }
    
    public void createPdf(String filename) throws IOException, DocumentException {
        // step 1
        Document document = new Document();
        // step 2
        PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(filename));
        MyFooter event = new MyFooter();
        writer.setPageEvent(event);
        // step 3
        document.open();
        // step 4
        for (int i = 0; i < 3; ) {
            i++;
            document.add(new Paragraph("Test " + i));
            document.newPage();
        }
        // step 5
        document.close();
    }
}