/** 
  * Bandscope Receiver Applet 1.0.0 [S-METER BAR]
  * @author Robert J Morton <robmorton@clara.net> YE572246C
  * @version 13 March 2002, 20 March 2012
  * @copyright Robert J Morton (all rights reserved) */


import java.awt.*;     // for graphics operations (GUI)
import javax.swing.*;  // swing widgets

class smeter extends JPanel {

  private int 
    H,    // height of s-meter signal bar
    nig,  // upper black part of vertical (signal strength) axis
    sig;  // lower sigColour part of vertical (signal strength) axis

  private Color 
    bg,                               // background colour
    colour = new Color(100,200,150);  // signal colour


  smeter(Color bg, int H) { this.bg = bg; this.H = H ;}  // set panel colour


  void atualizar(int mS) {
    sig = mS;      // extent of signal bar
    nig = H - mS;  // extent of the rest of the rectangle
    repaint();     // shedule a repaint via the event-despatching thread
  }


  public void paint(Graphics g) {  // DISPLAY S-METER BAR
    g.setColor(bg);                // Fill the upper part of vertical (signal
    g.fillRect(0,0,20,nig);        // strength) axis with the panel colour.
    g.setColor(Color.blue);        // Fill lower part of vertical (signal 
    g.fillRect(0,0 + nig,20,sig);  // strength) axis with signal colour.
  }
}