Source Code : Making Image Masks From Byte Array

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Making Image Masks From Byte Array

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();
    }
  }
}

           
       

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