capplet.java

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package aclock;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.util.Date;
import java.net.URL;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class CApplet
    extends Applet
    implements Runnable {

  Thread timer = null;
  int lxS, lyS, lxM, lyM, lxH, lyH;
  int xCenter = 100, yCenter = 100;
  int radius = 80;
  int xToday = 45, yToday = 220;
  Image img;
  MediaTracker mediaTracker = new MediaTracker(this);
  Panel panel1 = new Panel();
  BorderLayout borderLayout1 = new BorderLayout();
  Button button1 = new Button();
  Label label1 = new Label();
  Label label2 = new Label();
  Label label3 = new Label();
  TextField inHour = new TextField();
  TextField inMin = new TextField();
  TextField inSec = new TextField();
  int AHour,AMin,ASec;
  AudioClip au;


  //Construct the applet
  public CApplet() {
  }

  //Initialize the applet
  public void init() {
    try {
      jbInit();
      imgInit();
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }

  //Component initialization
  private void jbInit() throws Exception {
    this.setLayout(borderLayout1);
    button1.setLabel("确 定");
    button1.setLocale(java.util.Locale.getDefault());
    button1.addActionListener(new CApplet_button1_actionAdapter(this));
    label1.setText("时");
    label2.setText("分");
    label3.setText("秒");
    inHour.setColumns(2);
    //textField2.setCaretPosition(10);
    inMin.setColumns(2);
    inMin.setText("");
    inSec.setColumns(2);
    inSec.setText("");
    this.add(panel1,  BorderLayout.SOUTH);
    panel1.add(label1, null);
    panel1.add(inHour, null);
    panel1.add(label2, null);
    panel1.add(inMin, null);
    panel1.add(label3, null);
    panel1.add(inSec, null);
    panel1.add(button1, null);
  }

  void imgInit() {
    au = getAudioClip(getCodeBase(), "au/alarm.au");
    img = getImage(getDocumentBase(), "img/clock.jpg");
     //装载总的大图片
     mediaTracker.addImage(img, 0);
     try {
       mediaTracker.waitForAll();
     }
     catch (Exception e) {
       System.out.println("图片装载出错");
     }

  }

  public void drawScale(Graphics g) {
    int xHour, yHour, xMinute, yMinute;
    g.setColor(Color.yellow);
    for (int i = 0; i < 12; i++) {
      xHour = (int) (Math.cos( (i * 30) * 3.14f / 180 - 3.14f / 2) * radius +
                     xCenter);
      yHour = (int) (Math.sin( (i * 30) * 3.14f / 180 - 3.14f / 2) * radius +
                     yCenter);
      g.fill3DRect(xHour - 3, yHour - 3, 6, 6, true);
    }
    for (int i = 0; i < 60; i++) {
      xMinute = (int) (Math.cos( (i * 30) * 3.14f / 180 - 3.14f / 2) * radius +
                       xCenter);
      yMinute = (int) (Math.sin( (i * 30) * 3.14f / 180 - 3.14f / 2) * radius +
                       yCenter);
      g.fill3DRect(xMinute - 1, yMinute - 1, 2, 2, true);
    }
  }

  public void paint(Graphics g) {
    int xHour, yHour, xMinute, yMinute, xSecond, ySecond, second, minute, hour;
    String today;
    g.drawImage(img, 0, 0, this);
    this.drawScale(g);
    Date date = new Date();
    second = date.getSeconds();
    minute = date.getMinutes();
    hour = date.getHours();
    today = date.toLocaleString();
    xSecond = (int) (Math.cos(second * 3.14f / 30 - 3.14f / 2) * radius +
                     xCenter);
    ySecond = (int) (Math.sin(second * 3.14f / 30 - 3.14f / 2) * radius +
                     yCenter);
    xMinute = (int) (Math.cos(minute * 3.14f / 30 - 3.14f / 2) * (radius - 10) +
                     xCenter);
    yMinute = (int) (Math.sin(minute * 3.14f / 30 - 3.14f / 2) * (radius - 10) +
                     yCenter);
    xHour = (int) (Math.cos( (hour * 30 + minute / 2) * 3.14f / 180 - 3.14f / 2) *
                   (radius - 30) + xCenter);
    yHour = (int) (Math.sin( (hour * 30 + minute / 2) * 3.14f / 180 - 3.14f / 2) *
                   (radius - 30) + yCenter);
    g.setColor(Color.white);
    g.drawString(today, xToday, yToday);
    g.setColor(Color.red);
    g.drawLine(xCenter, yCenter, xSecond, ySecond);
    g.setColor(Color.green);
    g.drawLine(xCenter, yCenter - 2, xMinute, yMinute);
    g.drawLine(xCenter - 2, yCenter, xMinute, yMinute);
    g.setColor(Color.blue);
    g.drawLine(xCenter, yCenter - 3, xHour, yHour);
    g.drawLine(xCenter - 3, yCenter, xHour, yHour);
    if(AHour == hour && AMin == minute && ASec == second){
      au.play();
    }
  }

  public void start() {
    if (timer == null) {
      timer = new Thread(this);
      timer.start();
    }
  }

  public void stop() {
    timer = null;
  }

  public void run() {
    while (true) {
      try {
        timer.sleep(100);
      }
      catch (Exception e) {}
      //this.repaint();
      this.update(this.getGraphics());
      //this.paint(this.getGraphics());

    }

  }

  void button1_actionPerformed(ActionEvent e) {
    if(inHour.getText() != null)
    AHour = Integer.parseInt(inHour.getText());
    else AHour = 0;
    if(inMin.getText() != null)
    AMin = Integer.parseInt(inMin.getText());
    else AMin = 0;
    if(inSec.getText() != null)
    ASec = Integer.parseInt(inSec.getText());
    else ASec = 0;
  }

}

class CApplet_button1_actionAdapter implements java.awt.event.ActionListener {
  CApplet adaptee;

  CApplet_button1_actionAdapter(CApplet adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.button1_actionPerformed(e);
  }
}