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BreakEnd.javaAPI DocExample3536Tue Dec 25 20:04:10 GMT 2001None

BreakEnd

public class BreakEnd extends Frame implements Runnable
BreakEnd - Tool to display current time and time that class starts/resumes. This started as a quick hack when I saw the Windows guys with a tool like this, but it has grown somewhat since then. TODO add another Thread to flash the screen if the resume time is passed.
author
Ian Darwin
version
$Id: BreakEnd.java,v 1.6 2001/12/26 01:04:11 ian Exp $

Fields Summary
protected Label
nowLabel
protected Label
endsLabel
protected Thread
t
A thread to run the clock ticker
protected Font
f
The font for the large text
public static final int
MAXFONTSIZE
The maximum sensible font size given current monitors.
Constructors Summary
public BreakEnd(String s)
Constructor: set a font, initialize UI components.

		super("Java Breaker: " + s);
		String mesg = null;

		Container cp;
		// cp = getContentPane();
		cp = this;
		cp.setLayout(new BorderLayout());

		cp.add(BorderLayout.NORTH,
			nowLabel =  new Label("Time now is: 00:00:00", Label.CENTER));
	
		if (s.startsWith("+")) {	// "This will be HARDer..."
			Calendar d = new GregorianCalendar();
			int newMinutes = d.get(Calendar.MINUTE)+
				Integer.parseInt(s.substring(1))+1;
			d.set(Calendar.MINUTE, newMinutes);
			mesg = "Class resumes at " + toHHMM_String(d);
		} else	mesg = "Class resumes at " + s + " ";
		cp.add(BorderLayout.CENTER,
			endsLabel = new Label(mesg, Label.CENTER));
		setFontSize(40);
		Button b;
		cp.add(BorderLayout.SOUTH, b = new Button("Done"));
		b.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				System.exit(0);
			}
		});

		(t = new Thread(this)).start();

        addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent e) {
			setVisible(false);
			dispose();
			System.exit(0);
			}
		});
		addComponentListener(new ComponentAdapter() {
			public void componentResized(ComponentEvent e) {
				Dimension d = getSize();
				if (d.height < 100)
					setFontSize(72);
				else
					setFontSize(d.height/6);
			}
		});
Methods Summary
public static voidmain(java.lang.String[] av)
Main method to start me up.


	       
	     
		for (int i=0; i<av.length; i++) {
			// parse options...
		}

		if (av.length != 1) {
			System.err.println("Usage: javaBreak time");
			return;
		}
		BreakEnd b = new BreakEnd(av[0]);
		b.pack();
		UtilGUI.centre(b);

		b.setVisible(true);
public voidrun()

		while (t.isAlive()) {
			Calendar d = new GregorianCalendar();
			nowLabel.setText("Time is now " + toHHMM_String(d));
			try {
				Thread.sleep(1000);
			} catch (Exception e) {
				return;
			}
		}
protected voidsetFontSize(int sz)

		if (sz > MAXFONTSIZE)
			sz = MAXFONTSIZE;
		System.out.println("Setting font size to " + sz);
		Font f = new Font("Helvetica", Font.PLAIN, sz);
		nowLabel.setFont(f);
		endsLabel.setFont(f);
private java.lang.StringtoHHMM_String(java.util.Calendar d)

		String result = null;
		int h = d.get(Calendar.HOUR_OF_DAY);
		int m = d.get(Calendar.MINUTE);
		// To format a non-localized two-digit number
		NumberFormat form = new DecimalFormat("00");
		try {
			result = form.format(h) + ":" + form.format(m);
		} catch (IllegalArgumentException iae) {
			JOptionPane.showMessageDialog(this,
				"Formatting Error!" + iae,	// message
				"Formatting Error!",					// titlebar
				JOptionPane.ERROR_MESSAGE);	// icon
		}
		return result;