/*
 * Panel3D.java
 */

import java.awt.*;

/* 3D Panel */
public class Panel3D extends Panel implements Setting {
    int mode = -1;         // -1: concave, 1: convex, 0: flat.
    int rinsets = 1;

    /** Initialize a Blank Concave 3D Panel */
    public Panel3D() {
        setLayout(flow);
        setBackground(gray);
    }

    /** Initalize a Blank 3D Panel with mode setting */
    public Panel3D(int _mode) { this(); mode = _mode;}

    /** Initalize a Blank 3D Panel with mode setting */
    public Panel3D(int _mode, int _rinsets)
    { this(_mode); rinsets = _rinsets;}

    /** Insets setting */
    public Insets insets() {
      int ofs = rinsets*depth;
      return new Insets(ofs, ofs, ofs, ofs);
    }

    public void repaint() {
        Graphics g = getGraphics();
        if ( g == null ) return;
        paintAll(g);
        g.dispose();
    }

    /* Draw 3D Rect Utility Method */
    public void Draw3DRect(Graphics g, int depth, Color color)
    { Canvas3D.Draw3DRect(g, 0, 0, size().width, size().height, depth, color);}

    /** Call update when respont to a exposure */
    public void paint(Graphics g) { update(g);}

    /** Respond to a repaint request */
    public void update(Graphics g) {
        if ( g == null ) return;
        validate();
        int w = size().width-d2;
        int h = size().height-d2;
        if ( mode < 0 ) {
          Draw3DRect(g, -depth, null);
          g.clipRect(depth, depth, w, h);
        } else if ( mode > 0 ) {
          Draw3DRect(g, depth, null);
          g.clipRect(depth, depth, w, h);
        }
    }   

    /** Notify Parent Object */
    public void Notify(Event ev, Object arg) {
       Component p = getParent();
       while ( (p != null) && !p.action(ev, arg) )
         p = p.getParent();
    }

}