/** 
  * Search Engine Applet 1.0.1
  * @author Robert John Morton
  * @version 22 October 1999 modified 10 July 2009, 10 April 2012
    JFramed Sat 04 Mar 2017 11:57:36 BRT 
  * @copyright Robert John Morton (all rights reserved) */

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


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

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

  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 boolean 
    redMsg = false;  // true = display message in red lettering

  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 app's instance reference to local variable

    // compute baseline 'h' for the 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 event despatching thread
  }


  public void paint(Graphics g){  // DISPLAY SUMMARY'S NUMBER

    // draw the background image onto the applet canvas
    g.drawImage(hf.IMG3,0,0,this);

    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
  }
}