Java/PDF RTF/Image Mask

Image Masks Demo

   <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.PdfContentByte; import com.lowagie.text.pdf.PdfWriter; public class ImageMasksPDF {

 public static void main(String[] args) {
   Document document = new Document(PageSize.A4, 50, 50, 50, 50);
   try {
     PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("ImageMasksPDF.pdf"));
     document.open();
     Paragraph p = new Paragraph("Some text behind a masked image.");
     for(int i=0;i<50;i++){
       document.add(p);  
     }
     
     PdfContentByte cb = writer.getDirectContent();
     byte maskr[] = { (byte) 0x77, (byte) 0x77, (byte) 0x00, (byte) 0x00, (byte) 0x00,
         (byte) 0x00, (byte) 0x77, (byte) 0x77 };
     
     Image mask = Image.getInstance(8, 8, 1, 1, maskr);
     mask.makeMask();
     mask.setInvertMask(true);
     
     Image image = Image.getInstance("logo.png");
     image.setImageMask(mask);
     image.setAlignment(Image.TEXTWRAP);
     image.setAbsolutePosition(60, 550);
     cb.addImage(image);
     document.close();
   } catch (Exception de) {
     de.printStackTrace();
   }
 }

}

      </source>
   
  
 
  

Making Image Masks From Byte Array

   <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.PdfContentByte; import com.lowagie.text.pdf.PdfWriter; public class MakingMasksFromByteArrayPDF {

 public static void main(String[] args) {
   Document document = new Document(PageSize.A4, 50, 50, 50, 50);
   try {
     PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("MakingMasksFromByteArrayPDF.pdf"));
     document.open();
     Paragraph p = new Paragraph("Some text behind a masked image.");
     for(int i=0;i<10;i++){
       document.add(p);  
     }
     
     PdfContentByte cb = writer.getDirectContent();
     byte maskr[] = { (byte) 0x77, (byte) 0x77, (byte) 0x00, (byte) 0x00, (byte) 0x00,
         (byte) 0x00, (byte) 0x77, (byte) 0x77 };
     
     Image mask = Image.getInstance(8, 8, 1, 1, maskr);
     mask.makeMask();
     mask.setInvertMask(true);
     
     cb.setRGBColorFill(255, 0, 0);
     cb.addImage(mask, mask.scaledWidth() * 8, 0, 0, mask.scaledHeight() * 8, 100, 450);
     document.close();
   } catch (Exception de) {
     de.printStackTrace();
   }
 }

}

      </source>