import java.applet.*;
import java.awt.*;

public class Mandel extends Applet
{
   private Image  offImage;
   private MandelCanvas  drawing;
   private MandelControl control;
   private Label         status;
   private Button        button;
/* =========================================================== */
   public void init()
   {
      setLayout(new BorderLayout());

      button  = new Button("Controls");
      status  = new Label("Mandelbrot Set - Applet by B. Wachsmuth");

      Panel bottomRow = new Panel();
      bottomRow.setLayout(new FlowLayout());
      bottomRow.add(status);
      bottomRow.add(button);
      add("South",  bottomRow);

      int width  = super.size().width;
      int height = super.size().height - bottomRow.preferredSize().height;
      offImage = createImage(width, height);
      drawing = new MandelCanvas (this,offImage,width, height,
                                  -2, 2, -2, 2, 50, 2);
      add("Center", drawing);

      control = new MandelControl(this,-2,2,-2,2,50,2);

      resize(preferredSize());
      show();
   }
/* =========================================================== */
   public void showMsg(String msg)
   {
      status.setText(msg);
   }
/* =========================================================== */
   public void setControlParams(double xMin, double xMax,
                                double yMin, double yMax,
                                int    iter, int    pixel)
   {
      control.setParams(xMin,xMax,yMin,yMax,iter,pixel);
   }
/* =========================================================== */
   public void setDrawingParams(double xMin, double xMax,
                                double yMin, double yMax,
                                int    iter, int   pixel)
   {
      drawing.stop();
      drawing.setParams(xMin,xMax,yMin,yMax,iter,pixel);     
      drawing.start();
   }
/* =========================================================== */
    public boolean action(Event e, Object arg)
    {
       if (e.target == button)
       {
          control.show();
          control.toFront();
          return true;       
       }
       else 
          return false;
    }
}