String Spinner with a specified Angle

This Component is a java class which can be to used to spin a text with the specified angle. This can be used in any screens in Blackberry where a text needs a spin.

public class StringSpinner extends MainScreen {
 // Font of the text to be displayed
 private Font myFont;
 // Horizontal position of drawing the text
 private int xOffset;
 // Vertical position of drawing the text
 private int yOffset;
 // Angle to which the text is to be tilted
 private int theta;
 // Text to spin 
 private String textToSpin;

 /**
  * Constructor
  * @param textToSpin text to be displayed
  */
 public StringSpinner(final String textToSpin) {
  xOffset = Display.getWidth() / 2;
  yOffset = Display.getHeight() / 2;

  this.textToSpin= textToSpin;
  // execute in a new thread
  new Thread() {

   public void run() {
    // repeat the loop
    while(true) {
     theta += 5;
     theta %= 360;
     // call paint method to draw text
     invalidate();

     try {
      // call thread to sleep for 25 milliseconds
      Thread.sleep(25);
     }
     catch (InterruptedException ignore) {
      ignore.printStackTrace();
     }
    }
   }
  }.start();
 }

 /* 
  * @see net.rim.device.api.ui.Screen#paint(net.rim.device.api.ui.Graphics)
  */
 public void paint(Graphics graphics) {
  int thetaFixed = Fixed32.toFP(theta);

  int cell_11 = Fixed32.cosd(thetaFixed);
  int cell_12 = -Fixed32.sind(thetaFixed);

  int cell_21 = Fixed32.sind(thetaFixed);
  int cell_22 = Fixed32.cosd(thetaFixed);

  // Define a transform for the text font
  int[] transform = new int[] {
    cell_11, cell_12,
    cell_21, cell_22,
    0, 0
  };
  // set the font for the given transform
  myFont = Font.getDefault().derive(Font.PLAIN, 14, Ui.UNITS_px, Font.ANTIALIAS_STANDARD, 0, transform);
  graphics.setFont(myFont);
  // call graphics to draw text with given horizontal and vertical positions
  graphics.drawText(textToSpin, xOffset, yOffset);
 }
}