dtmf.java

用java 写的模拟离散时间DTMF Applet

package DTMF;

/*
 * @(#)DTMF.java 1.0 06/04/17
 *
 * You can modify the template of this file in the
 * directory ..\JCreator\Templates\Template_2\Project_Name.java
 *
 * You can also create your own project template by making a new
 * folder in the directory ..\JCreator\Template\. Use the other
 * templates as examples.
 *
 */


import java.awt.*;
import java.applet.*;

public class DTMF extends Applet implements Runnable {
  Thread runner;//????????????????
  boolean isTextFieldEntry = false;//判断文本框里面是否有数字？？？
  Panel pnlKeyPad = new Panel();
//  String toText;
  BorderLayout borderLayout1 = new BorderLayout(0, 20);
  GridLayout gridLayout1= new GridLayout(4, 4, 5, 5);
  Button btnZero = new Button("0");
  Button btnOne = new Button("1");
  Button btnTwo = new Button("2");
  Button btnThree = new Button("3");
  Button btnFour = new Button("4");
  Button btnFive = new Button("5");
  Button btnSix = new Button("6");
  Button btnSeven = new Button("7");
  Button btnEight = new Button("8");
  Button btnNine = new Button("9");
  Button btnStar = new Button("*");
  Button btnHash = new Button("#");
  //Button btnA = new Button("A");
  //Button btnB = new Button("B");
  //Button btnC = new Button("C");
  //Button btnD = new Button("D");
//  Button btnDial = new Button("拨号");
  AudioClip toneZero, toneOne, toneTwo, toneThree, toneFour,
            toneFive, toneSix, toneSeven, toneEight,
            toneNine, toneStar, toneHash, toneA, toneB, toneC, toneD;
//  TextField tfNumber = new TextField(12);
  Panel pnlNumberEntry = new Panel();
  FlowLayout flowLayout1 = new FlowLayout();
  Label lbcopy=new Label("(c)华南理工大学电子信息学院",Label.CENTER);

  //Construct the applet
  public DTMF() {
  }

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

  public void stop() {
    if (runner != null) {
      runner.stop();
      runner = null;
    }
  }

  public void run() {
  }

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

  //Component initialization
  public void jbInit() throws Exception{
    this.setLayout(borderLayout1);
    pnlNumberEntry.setLayout(flowLayout1);
    pnlKeyPad.setLayout(gridLayout1);
    //this.add("North", pnlNumberEntry);
    //pnlNumberEntry.add(tfNumber);
    //pnlNumberEntry.add(btnDial);
    this.add("Center", pnlKeyPad);
    pnlKeyPad.add(btnOne);
    pnlKeyPad.add(btnTwo);
    pnlKeyPad.add(btnThree);
//    pnlKeyPad.add(btnA);
    pnlKeyPad.add(btnFour);
    pnlKeyPad.add(btnFive);
    pnlKeyPad.add(btnSix);
//    pnlKeyPad.add(btnB);
    pnlKeyPad.add(btnSeven);
    pnlKeyPad.add(btnEight);
    pnlKeyPad.add(btnNine);
//    pnlKeyPad.add(btnC);
    pnlKeyPad.add(btnStar);
    pnlKeyPad.add(btnZero);
    pnlKeyPad.add(btnHash);
//    pnlKeyPad.add(btnD);
    this.add("South",lbcopy);
    toneZero  = getAudioClip(getDocumentBase(), "zero.au");
    toneOne   = getAudioClip(getDocumentBase(), "one.au");
    toneTwo   = getAudioClip(getDocumentBase(), "two.au");
    toneThree = getAudioClip(getDocumentBase(), "three.au");
    toneFour  = getAudioClip(getDocumentBase(), "four.au");
    toneFive  = getAudioClip(getDocumentBase(), "five.au");
    toneSix   = getAudioClip(getDocumentBase(), "six.au");
    toneSeven = getAudioClip(getDocumentBase(), "seven.au");
    toneEight = getAudioClip(getDocumentBase(), "eight.au");
    toneNine  = getAudioClip(getDocumentBase(), "nine.au");
    toneStar  = getAudioClip(getDocumentBase(), "star.au");
    toneHash  = getAudioClip(getDocumentBase(), "hash.au");
    toneA     = getAudioClip(getDocumentBase(), "A.au");
    toneB     = getAudioClip(getDocumentBase(), "B.au");
    toneC     = getAudioClip(getDocumentBase(), "C.au");
    toneD     = getAudioClip(getDocumentBase(), "D.au");
    this.requestFocus();
  }

  void pause() {
    try { Thread.sleep(200); }
    catch (InterruptedException e) { return; }
  }
/*
  public void dialDigitString() {
    String s = tfNumber.getText();
    int l = s.length();
    for (int i = 0; i<l; i++) {
      char c = s.charAt(i);
      switch (c) {
        case '0': toneZero.play();  pause(); break;
        case '1': toneOne.play();   pause(); break;
        case '2': toneTwo.play();   pause(); break;
        case '3': toneThree.play(); pause(); break;
        case '4': toneFour.play();  pause(); break;
        case '5': toneFive.play();  pause(); break;
        case '6': toneSix.play();   pause(); break;
        case '7': toneSeven.play(); pause(); break;
        case '8': toneEight.play(); pause(); break;
        case '9': toneNine.play();  pause(); break;
        case '*': toneStar.play();  pause(); break;
        case '#': toneHash.play();  pause(); break;
  //      case 'A': toneA.play();     pause(); break;
  //      case 'B': toneB.play();     pause(); break;
  //      case 'C': toneC.play();     pause(); break;
  //      case 'D': toneD.play();     pause(); break;
      }
    }
    
    tfNumber.setText("");
  }

  */
  //Get Applet information
  public String getAppletInfo() {
    return "(c)华南理工大学电子信息学院";
  }

  //Get parameter info
  public String[][] getParameterInfo() {
    return null;
  }

    public boolean action(Event evt, Object obj) {
      if (evt.target == btnZero) {
        toneZero.play();
           this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnOne) {
        toneOne.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnTwo) {
        toneTwo.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnThree) {
        toneThree.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnFour) {
        toneFour.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnFive) {
        toneFive.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnSix) {
        toneSix.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnSeven) {
        toneSeven.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnEight) {
        toneEight.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnNine) {
        toneNine.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnStar) {
        toneStar.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnHash) {
        toneHash.play();
        this.requestFocus();
        return true;
      }
 /*     else
      if (evt.target == btnA) {
        //toneA.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnB) {
        toneB.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnC) {
        toneC.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnD) {
        toneD.play();
        this.requestFocus();
        return true;
      }
      else
      if (evt.target == btnDial) {
        dialDigitString();
        this.requestFocus();
        return true;
      }
*/      else
        return false;
    }

  public boolean gotFocus(Event evt, Object obj) {
    //if (evt.target == tfNumber) {
    //  isTextFieldEntry = true;
    //  return true;
    //}
    //else 
    return false;
  }

  public boolean lostFocus(Event evt, Object obj) {
    //if (evt.target == tfNumber) {
    //  isTextFieldEntry = false;
    //  return true;
    //}
    //else 
    return false;
  }

  public boolean keyDown(Event evt, int key) {
    if (!isTextFieldEntry) {
      switch ((char)key) {
        case '0': toneZero.play(); break;
        case '1': toneOne.play(); break;
        case '2': toneTwo.play(); break;
        case '3': toneThree.play(); break;
        case '4': toneFour.play(); break;
        case '5': toneFive.play(); break;
        case '6': toneSix.play(); break;
        case '7': toneSeven.play(); break;
        case '8': toneEight.play(); break;
        case '9': toneNine.play(); break;
        case '#': toneHash.play(); break;
        case '*': toneStar.play(); break;
/*        case 'a':
        case 'A': toneA.play(); break;
        case 'b':
        case 'B': toneB.play(); break;
        case 'c':
        case 'C': toneC.play(); break;
        case 'd':
        case 'D': toneD.play(); break;
*/        default:
      }
    }
    return !isTextFieldEntry;
  }
}