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Last-Modified: Tue, 21 May 1996 20:08:47 GMT

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//****************************************************************************

// ---- version information ----

//

// StatusPanel.java      v 1.00 b1

// Written by:           I. van Rienen / E-mail ivr@bart.nl

// URL:                  http://www/bart.nl/~ivr

// Initial release:

// Released in public domain:

//

// ---- Description ----

// Java class containing methods for creating and maintaining a

// Status panel.

//

// This program and the Java source is in the public domain.

// Permission to use, copy, modify, and distribute this software

// and its documentation for NON-COMMERCIAL purposes and

// without fee is hereby granted.

//

//    Copyright 1996

//

//    Iwan van Rienen

//    Joan Maetsuyckerstr. 145

//    2593 ZG  The Hague

//    The Netherlands

//

// I am not responsible for any bugs in this program and

// possible damage to hard- or software when using this program.

//****************************************************************************

import java.applet.Applet;

import java.awt.*;

import java.util.Vector;



class StatusPanel extends Panel {

    DigSim applet;

    public static final int STATUSPANEL_HEIGHT = 20;

    protected Font StatusFont;

    protected FontMetrics StatusFontMetrics;

    protected static final Color BackGroundColor = Color.green;

    protected static final Color TextColor = Color.black;

    protected String ActMessage = "Please wait";

    protected static final int STATUSLEDS_WIDTH = 20;

    boolean SimulationInitializeInProgress = false;

    boolean SimulationRunning = false;

    boolean StatusLedOn = false;



//----------------------------------------------------------------------------

// The constructor of the status panel

//----------------------------------------------------------------------------

    public StatusPanel(DigSim app) {

        applet = app;

        setLayout( new BorderLayout());

        StatusFont = new Font("TimesRoman",Font.PLAIN,12);

        setFont(StatusFont);

        StatusFontMetrics = getFontMetrics(StatusFont);

        repaint();

    }



//----------------------------------------------------------------------------

// Check if the simulation is running

//----------------------------------------------------------------------------

    public boolean SimulateRunning() {

        return (SimulationRunning | SimulationInitializeInProgress);

    }



//----------------------------------------------------------------------------

// Calculate the preferred size of this panel

//----------------------------------------------------------------------------

    public Dimension preferredSize() {

        // System.out.println ("StatusPanel preferredSize()");

        int w = applet.size().width;

        int h = STATUSPANEL_HEIGHT;

        return new Dimension(w, h);

    }



//----------------------------------------------------------------------------

// Draw the status LED

//----------------------------------------------------------------------------

    public void DrawStatusLED(Graphics g) {

        StatusLedOn = !StatusLedOn;

       int LedX = size().width - STATUSLEDS_WIDTH;

        if (SimulationRunning && StatusLedOn) {

            g.setColor (Color.green);

        } else if (SimulationInitializeInProgress && StatusLedOn) {

            g.setColor (Color.red);

        } else {

            g.setColor (Color.gray);

        }

        g.fillOval (LedX + 3, 3, 15, 15);

    }



//----------------------------------------------------------------------------

// Draw the status panel

//----------------------------------------------------------------------------

    public void paint(Graphics g) {

        g.setColor(BackGroundColor);

        g.fillRect(0, 0, size().width - STATUSLEDS_WIDTH, 20);

        g.setColor(TextColor);

        g.drawString(ActMessage, 2, StatusFontMetrics.getHeight() - 2);

        g.setColor(Color.black);

        g.fillRect (size().width - STATUSLEDS_WIDTH, 0, STATUSLEDS_WIDTH, 20);

        g.setColor(BackGroundColor);

        g.drawRect (size().width - STATUSLEDS_WIDTH, 0, STATUSLEDS_WIDTH, 20);

        DrawStatusLED(g);

    }



//----------------------------------------------------------------------------

// Display the message

//----------------------------------------------------------------------------

    public void StatusMessage(String msg) {

        ActMessage = msg;

        repaint();

    }



}