/** 
  * Current Account Balances: Graphical Display Applet
  * @author Robert J Morton UK-YE572246C <robmorton@clara.net>
  * @version 12 July 2000, 27 April 2012
  * @copyright July 2000 Robert J Morton (all rights reserved) */

/*  THE PANEL ON WHICH THE VERTICAL MONEY SCALE iS DISPLAYED
    The panel is 45 by 212 pixels. */


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


public class vert extends JPanel {

  /*Income scale labels set by HTML <applet> tag para-
  meters viz: <param name="scale" value="0"> as follows: */

  private static final String income[][] = {

    {" £0k","£10k","£20k","£30k","£40k","£50k"},  // value="0"
    {" £0k"," £5k","£10k","£15k","£20k","£25k"},  // value="1"
    {" £0k"," £2k"," £4k"," £6k"," £8k","£10k"},  // value="2"
    {" £0k"," £1k"," £2k"," £3k"," £4k"," £5k"},  // value="3"
    {" £0k"," £½k"," £1k","£1½k"," £2k","£2½k"},  // value="4"
    {" £0k","£200","£400","£600","£800"," £1k"},  // value="5"
    {"£10k"," £0k","£10k","£20k","£30k","£40k"},  // value="6"
    {"£30k","£20k","£10k"," £0k","£10k","£20k"},  // value="7"
    {"  £0"," £50","£100","£150","£200","£250"},  // value="8"
    {"£10","  £0","£10","£20","£30","£40"},       // value="9"
    {"0M","1M","2M","3M","4M","5M"},              // value="10"
    {"00M","10M","20M","30M","40M","50M"}         // value="11"
  };

  private int 
    fh,  // font height
    sf;  // monetary scaling factor for vertical axis

  private static final Font font = new Font("Sans", Font.BOLD, 14);
  private FontMetrics fm;


  vert(graphs ap) {
    // get letter dimensions etc for the above font
    fm = getFontMetrics(font);

    // descent of monetary annotation below graduation mark
    fh = (fm.getAscent() + fm.getDescent()) / 2; 

    // get the monetary scaling factor for vertical axis
    sf = Integer.valueOf(ap.getParameter("scale")).intValue();
  }


  public void paint(Graphics g) {
    setFont(font);
    int z = 6;                       // vertical graticule increment
    for(int i = 0; i < 6; i++) {     // for each £10,000 graduation

      if(sf == 6 && i > 4 || sf == 7 && i > 2 || sf == 9 && i > 4) 
        g.setColor(Color.red);       // show negative money in red
      else
        g.setColor(Color.black);

      String s = income[sf][5 - i];  // annotation text from top to bottom
      g.drawString(s, 49 - fm.stringWidth(s), z + 4);

      g.setColor(Color.black);       // all annotation marks are black
      g.drawLine(50, z, 55, z);      // annotation mark
      z += 40;                       // accumulated number of £s (scaled)
    }
    g.setColor(Color.black); g.drawLine(55,6,55,206);  // vertical axis
  }
}