Java/PDF RTF/Transparency

Transparency by PdfContentByte

   <source lang="java">

import java.awt.Color; import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.Element; import com.lowagie.text.PageSize; import com.lowagie.text.Phrase; import com.lowagie.text.pdf.ColumnText; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfGState; import com.lowagie.text.pdf.PdfTemplate; import com.lowagie.text.pdf.PdfTransparencyGroup; import com.lowagie.text.pdf.PdfWriter; public class TransparencyPDF {

   public static void main(String[] args) {
       Document document = new Document(PageSize.A4, 50, 50, 50, 50);
       try {
           PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("TransparencyPDF.pdf"));
           document.open();
           PdfContentByte cb = writer.getDirectContent();
           
           PdfGState gs1 = new PdfGState();
           gs1.setFillOpacity(0.5f);
           
           cb.setGState(gs1);
           cb.setColorStroke(Color.black);
           cb.setColorFill(Color.gray);
           cb.rectangle(0, 0, 100, 200);
           cb.fill();
           cb.setLineWidth(2);
           cb.rectangle(0, 0, 200, 200);
           cb.stroke();
           
           PdfGState gs2 = new PdfGState();
           gs2.setFillOpacity(0.1f);
           
           cb.setGState(gs2);
           
           cb.setColorStroke(Color.black);
           cb.setColorFill(Color.gray);
           cb.rectangle(50, 50, 100, 200);
           cb.fill();
           cb.setLineWidth(2);
           cb.rectangle(50, 50, 200, 200);
           cb.stroke();
           
       }
       catch (Exception de) {
           de.printStackTrace();
       }
       document.close();
   }

}

      </source>