Adding watermarks to images

These examples were written in answer to the following questions:

Click How to add text to an image?
Click How to draw lines on an image?

watermarkedimages1

JAVA

/**
 * This code sample was written by Bruno Lowagie in answer to this question:
 * http://stackoverflow.com/questions/26814958/pdf-vertical-postion-method-gives-the-next-page-position-instead-of-current-page
 */
package sandbox.images;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Font;
import com.itextpdf.text.Font.FontFamily;
import com.itextpdf.text.Image;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.GrayColor;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfTemplate;
import com.itextpdf.text.pdf.PdfWriter;

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

@WrapToTest
public class WatermarkedImages1 {
    public static final String IMAGE1 = "resources/images/bruno.jpg";
    public static final String IMAGE2 = "resources/images/dog.bmp";
    public static final String IMAGE3 = "resources/images/fox.bmp";
    public static final String IMAGE4 = "resources/images/bruno_ingeborg.jpg";
    public static final Font FONT = new Font(FontFamily.HELVETICA, 12, Font.NORMAL, GrayColor.GRAYWHITE);
    public static final String DEST = "results/images/watermark_template.pdf";
    
    public static void main(String[] args) throws IOException, DocumentException {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new WatermarkedImages1().createPdf(DEST);
    }
    
    public void createPdf(String dest) throws IOException, DocumentException {
        Document document = new Document();
        PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(dest));
        document.open();
        PdfContentByte cb = writer.getDirectContentUnder();
        document.add(getWatermarkedImage(cb, Image.getInstance(IMAGE1), "Bruno"));
        document.add(getWatermarkedImage(cb, Image.getInstance(IMAGE2), "Dog"));
        document.add(getWatermarkedImage(cb, Image.getInstance(IMAGE3), "Fox"));
        Image img = Image.getInstance(IMAGE4);
        img.scaleToFit(400, 700);
        document.add(getWatermarkedImage(cb, img, "Bruno and Ingeborg"));
        document.close();
    }
    
    public Image getWatermarkedImage(PdfContentByte cb, Image img, String watermark) throws DocumentException {
        float width = img.getScaledWidth();
        float height = img.getScaledHeight();
        PdfTemplate template = cb.createTemplate(width, height);
        template.addImage(img, width, 0, 0, height, 0, 0);
        ColumnText.showTextAligned(template, Element.ALIGN_CENTER,
                new Phrase(watermark, FONT), width / 2, height / 2, 30);
        return Image.getInstance(template);
    }
}

watermarkedimages2

JAVA

/**
 * This code sample was written by Bruno Lowagie in answer to this question:
 * http://stackoverflow.com/questions/26814958/pdf-vertical-postion-method-gives-the-next-page-position-instead-of-current-page
 */
package sandbox.images;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Font;
import com.itextpdf.text.Font.FontFamily;
import com.itextpdf.text.Image;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.GrayColor;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPCellEvent;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;

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

@WrapToTest
public class WatermarkedImages2 {
    public static final String IMAGE1 = "resources/images/bruno.jpg";
    public static final String IMAGE2 = "resources/images/dog.bmp";
    public static final String IMAGE3 = "resources/images/fox.bmp";
    public static final String IMAGE4 = "resources/images/bruno_ingeborg.jpg";
    public static final Font FONT = new Font(FontFamily.HELVETICA, 12, Font.NORMAL, GrayColor.GRAYWHITE);
    public static final String DEST = "results/images/watermark_table.pdf";
    
    public static void main(String[] args) throws IOException, DocumentException {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new WatermarkedImages2().createPdf(DEST);
    }
    
    public void createPdf(String dest) throws IOException, DocumentException {
        Document document = new Document();
        PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(dest));
        document.open();
        PdfPTable table = new PdfPTable(1);
        table.setWidthPercentage(100);
        PdfPCell cell;
        cell = new PdfPCell(Image.getInstance(IMAGE1), true);
        cell.setCellEvent(new WatermarkedCell("Bruno"));
        table.addCell(cell);
        cell = new PdfPCell(Image.getInstance(IMAGE2), true);
        cell.setCellEvent(new WatermarkedCell("Dog"));
        table.addCell(cell);
        cell = new PdfPCell(Image.getInstance(IMAGE3), true);
        cell.setCellEvent(new WatermarkedCell("Fox"));
        table.addCell(cell);
        cell = new PdfPCell(Image.getInstance(IMAGE4), true);
        cell.setCellEvent(new WatermarkedCell("Bruno and Ingeborg"));
        table.addCell(cell);
        document.add(table);
        document.close();
    }
    
    class WatermarkedCell implements PdfPCellEvent {
        String watermark;
        
        public WatermarkedCell(String watermark) {
            this.watermark = watermark;
        }
        
        public void cellLayout(PdfPCell cell, Rectangle position,
            PdfContentByte[] canvases) {
            PdfContentByte canvas = canvases[PdfPTable.TEXTCANVAS];
            ColumnText.showTextAligned(canvas, Element.ALIGN_CENTER,
                new Phrase(watermark, FONT),
                (position.getLeft() + position.getRight()) / 2,
                (position.getBottom() + position.getTop()) / 2, 30);
        }
    }
}

watermarkedimages3

JAVA

/**
 * This code sample was written by Bruno Lowagie in answer to this question:
 * http://stackoverflow.com/questions/28515474/how-to-add-text-on-the-last-page-through-pdfcontentbyte
 */
package sandbox.images;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Font;
import com.itextpdf.text.Font.FontFamily;
import com.itextpdf.text.Image;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.GrayColor;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfTemplate;
import com.itextpdf.text.pdf.PdfWriter;

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

@WrapToTest
public class WatermarkedImages3 {
    public static final String IMAGE1 = "resources/images/bruno.jpg";
    public static final Font FONT = new Font(FontFamily.HELVETICA, 12, Font.NORMAL, GrayColor.GRAYWHITE);
    public static final String DEST = "results/images/watermark3.pdf";
    
    public static void main(String[] args) throws IOException, DocumentException {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new WatermarkedImages3().createPdf(DEST);
    }
    
    public void createPdf(String dest) throws IOException, DocumentException {
        Document document = new Document();
        PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(dest));
        document.open();
        PdfPTable table = new PdfPTable(1);
        for (int i = 0; i < 50; i++) {
            table.addCell("rahlrokks doesn't listen to what people tell him");
        }
        PdfContentByte cb = writer.getDirectContentUnder();
        table.addCell(getWatermarkedImage(cb, Image.getInstance(IMAGE1), "Bruno"));
        document.add(table);
        ColumnText.showTextAligned(cb, Element.ALIGN_CENTER, new Phrase("Bruno knows best"), 260, 400, 45);
        document.close();
    }
    
    public Image getWatermarkedImage(PdfContentByte cb, Image img, String watermark) throws DocumentException {
        float width = img.getScaledWidth();
        float height = img.getScaledHeight();
        PdfTemplate template = cb.createTemplate(width, height);
        template.addImage(img, width, 0, 0, height, 0, 0);
        ColumnText.showTextAligned(template, Element.ALIGN_CENTER,
                new Phrase(watermark, FONT), width / 2, height / 2, 30);
        return Image.getInstance(template);
    }
}

watermarkedimages4

JAVA

/**
 * This code sample was written by Bruno Lowagie in answer to this question:
 * http://stackoverflow.com/questions/29561417/draw-lines-on-image-in-pdf-using-itextsharp
 */
package sandbox.images;

import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Image;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfTemplate;
import com.itextpdf.text.pdf.PdfWriter;

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

@WrapToTest
public class WatermarkedImages4 {
    public static final String IMAGE1 = "resources/images/bruno.jpg";
    public static final String IMAGE2 = "resources/images/dog.bmp";
    public static final String IMAGE3 = "resources/images/fox.bmp";
    public static final String IMAGE4 = "resources/images/bruno_ingeborg.jpg";
    public static final String DEST = "results/images/watermark_image4.pdf";
    
    public static void main(String[] args) throws IOException, DocumentException {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new WatermarkedImages4().createPdf(DEST);
    }
    
    public void createPdf(String dest) throws IOException, DocumentException {
        Document document = new Document();
        PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(dest));
        document.open();
        PdfContentByte cb = writer.getDirectContentUnder();
        document.add(getWatermarkedImage(cb, Image.getInstance(IMAGE1)));
        document.add(getWatermarkedImage(cb, Image.getInstance(IMAGE2)));
        document.add(getWatermarkedImage(cb, Image.getInstance(IMAGE3)));
        Image img = Image.getInstance(IMAGE4);
        img.scaleToFit(400, 700);
        document.add(getWatermarkedImage(cb, img));
        document.close();
    }
    
    public Image getWatermarkedImage(PdfContentByte cb, Image img) throws DocumentException {
        float width = img.getScaledWidth();
        float height = img.getScaledHeight();
        PdfTemplate template = cb.createTemplate(width, height);
        template.addImage(img, width, 0, 0, height, 0, 0);
        template.saveState();
        template.setColorStroke(BaseColor.GREEN);
        template.setLineWidth(3);
        template.moveTo(width * .25f, height * .25f);
        template.lineTo(width * .75f, height * .75f);
        template.moveTo(width * .25f, height * .75f);
        template.lineTo(width * .25f, height * .25f);
        template.stroke();
        template.setColorStroke(BaseColor.WHITE);
        template.ellipse(0, 0, width, height);
        template.stroke();
        template.restoreState();
        return Image.getInstance(template);
    }
}

watermarkedimages5

JAVA

/**
 * This code sample was written by Bruno Lowagie in answer to this question:
 * http://stackoverflow.com/questions/38027783
 */
package sandbox.images;

import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Image;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfTemplate;
import com.itextpdf.text.pdf.PdfWriter;

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

@WrapToTest
public class WatermarkedImages5 {
    public static final String IMAGE1 = "resources/images/bruno.jpg";
    public static final String IMAGE2 = "resources/images/dog.bmp";
    public static final String IMAGE3 = "resources/images/fox.bmp";
    public static final String IMAGE4 = "resources/images/bruno_ingeborg.jpg";
    public static final String DEST = "results/images/watermark_image5.pdf";
    
    public static void main(String[] args) throws IOException, DocumentException {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new WatermarkedImages5().createPdf(DEST);
    }
    
    public void createPdf(String dest) throws IOException, DocumentException {
        Document document = new Document();
        PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(dest));
        document.open();
        PdfContentByte cb = writer.getDirectContentUnder();
        document.add(getWatermarkedImage(cb, Image.getInstance(IMAGE1)));
        document.add(getWatermarkedImage(cb, Image.getInstance(IMAGE2)));
        document.add(getWatermarkedImage(cb, Image.getInstance(IMAGE3)));
        Image img = Image.getInstance(IMAGE4);
        img.scaleToFit(400, 700);
        document.add(getWatermarkedImage(cb, img));
        document.close();
    }
    
    public Image getWatermarkedImage(PdfContentByte cb, Image img) throws DocumentException {
        float width = img.getScaledWidth();
        float height = img.getScaledHeight();
        PdfTemplate template = cb.createTemplate(width, height);
        template.addImage(img, width, 0, 0, height, 0, 0);
        PdfPTable table = new PdfPTable(2);
        table.setTotalWidth(width);
        table.getDefaultCell().setBorderColor(BaseColor.YELLOW);
        table.addCell("Test1");
        table.addCell("Test2");
        table.addCell("Test3");
        table.addCell("Test4");
        table.writeSelectedRows(0, -1, 0, height, template);
        return Image.getInstance(template);
    }
}