Java Tutorial/PDF/Circle

Draw a circle with PdfContentByte

   <source lang="java">

import java.awt.Color; import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.GrayColor; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfWriter; public class MainClass {

 public static void main(String[] args) throws Exception {
   Document.rupress = false;
   Document document = new Document();
   PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
   document.open();
   PdfContentByte cb = writer.getDirectContent();
   cb.setColorStroke(new GrayColor(0.2f));
   cb.setColorFill(new GrayColor(0.9f));
   cb.circle(70, 770, 40);
   cb.fillStroke();

   document.close();
 }

}</source>

Draw more circles

   <source lang="java">

import java.awt.Color; import java.io.FileOutputStream; import java.io.IOException; import com.lowagie.text.Document; import com.lowagie.text.DocumentException; import com.lowagie.text.Element; 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 MainClass {

 public static void main(String[] args) throws Exception {
   Document document = new Document();
     PdfWriter writer = PdfWriter.getInstance(document,new FileOutputStream("2.pdf"));
     document.open();
     PdfContentByte cb = writer.getDirectContent();
     float gap = (document.getPageSize().width() - 400) / 3;
     pictureCircles(gap, 500, cb);
     cb.saveState();
     PdfGState gs1 = new PdfGState();
     gs1.setFillOpacity(0.5f);
     cb.setGState(gs1);
     
     cb.resetRGBColorFill();
     ColumnText ct = new ColumnText(cb);
     Phrase ph = new Phrase("Ungrouped objects\nObject opacity = 1.0");
     ct.setSimpleColumn(ph, gap, 0, gap + 200, 500, 18,
         Element.ALIGN_CENTER);
     ct.go();
     document.close();
 }

 public static void pictureCircles(float x, float y, PdfContentByte cb) {
   cb.setColorFill(Color.red);
   cb.circle(x + 70, y + 70, 50);
   cb.fill();
   cb.setColorFill(Color.yellow);
   cb.circle(x + 100, y + 130, 50);
   cb.fill();
   cb.setColorFill(Color.blue);
   cb.circle(x + 130, y + 70, 50);
   cb.fill();
 }

}</source>