/** 
  * Search Engine Applet 1.0.1
  * @author Robert John Morton
  * @version 22 October 1999 modified 10 July 2009, 10 April 2012
  * @copyright Robert John Morton (all rights reserved) */

import java.applet.*;  // all the gubbins to make the applet work
import javax.swing.*;  // Swing GUI
import java.awt.*;     // for graphics operations (GUI)

public class img3panel extends JPanel {  // SUMMARY NUMBER DISPLAY PANEL

  // Declare a font for the  url and summary number
  private static final Font font = new Font("Serif", Font.PLAIN, 18);

  // When true, the text must be displayed in red lettering
  private boolean redMsg = false;

  private Color bg;         // background colour for the message panel
  private String msg = "";  // string to hold the displayed message text
  private search hf;        // instance reference of the search applet
  private int W, H,         // width and height of message panel
              h;            // height of the text base-line

  img3panel(int W, int H, Color bg, search hf) {
    this.W = W;     // set width of message panel to local variable
    this.H = H;     // set height of message panel to local variable
    this.bg = bg;   // set panel's background colour to local variable
    this.hf = hf;   // copy applet's instance reference to local variable

    // Compute the baseline 'h' for lettering within a panel of height 'H'.

    FontMetrics fm = getFontMetrics(font); 
    h = fm.getAscent() + (H - fm.getHeight()) /2;
  }


  void showNumber(String s) {  // UPDATE SUMMARY'S NUMBER
    msg = s;     // copy message to local variables
    repaint();   // schedule a repaint via the event despatching thread
  }


  public void paint(Graphics g) {   // DISPLAY SUMMARY'S NUMBER
    g.drawImage(hf.IMG3,0,0,this);  // draw background image on applet canvas
    g.setFont(font);                // set font for summary number
    g.setColor(Color.black);        // set text foreground colour
    g.drawString(msg, 5, h);        // draw the summary number
  }
}