Learn Java Now/Learn_Java_Now_Microsoft_1996.iso/MsDev/Samples/Microsoft/CabAndSign/firstcab.cab/javabeep.class

Java Class File | 1996-08-26 | 5.3 KB | 161 lines

import beeper.Beeper;
import beeper.IBeeper;
import com.ms.com.ComException;
import java.applet.Applet;
import java.awt.Component;
import java.awt.Container;
import java.awt.Event;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.Window;
import java.awt.image.ImageObserver;

public class javabeep extends Applet implements Runnable {
   IBeeper m_Beeper;
   Thread m_javabeep;
   private Graphics m_Graphics;
   private Image[] m_Images;
   private int m_nCurrImage;
   private int m_nImgWidth;
   private int m_nImgHeight;
   private boolean m_fAllLoaded;
   private final int NUM_IMAGES = 18;
   boolean m_fStandAlone;

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

      this.m_Beeper = (IBeeper)(new Beeper());
   }

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

   }

   public boolean mouseDown(Event evt, int x, int y) {
      String BeeperString = new String();

      try {
         this.m_Beeper.Beep();

         for(int i = 1; i <= this.m_Beeper.getCount(); ++i) {
            BeeperString = BeeperString + this.m_Beeper.getItem(i) + " ";
         }
      } catch (ComException var7) {
         BeeperString = "Error from Beeper.Beep: handled in mouseDown method";
      }

      this.m_Graphics.drawString(BeeperString, x, y);
      return true;
   }

   private void displayImage(Graphics g) {
      if (this.m_fAllLoaded) {
         g.drawImage(this.m_Images[this.m_nCurrImage], (((Component)this).size().width - this.m_nImgWidth) / 2, (((Component)this).size().height - this.m_nImgHeight) / 2, (ImageObserver)null);
         FontMetrics fm = ((Component)this).getFontMetrics(((Component)this).getFont());
         String message = new String("Click me with the mouse!");
         g.drawString(message, (((Component)this).size().width - fm.stringWidth(message)) / 2, 3 * ((Component)this).size().height / 4);
      }
   }

   public String getAppletInfo() {
      return "Name: javabeep\r\n" + "Author: Steve Horn\r\n" + "Created with Microsoft Visual J++ Version 1.0";
   }

   public void run() {
      this.m_nCurrImage = 0;
      if (!this.m_fAllLoaded) {
         ((Component)this).repaint();
         this.m_Graphics = ((Component)this).getGraphics();
         this.m_Images = new Image[18];
         MediaTracker tracker = new MediaTracker(this);
         int i = 1;

         do {
            String strImage = "images/img00" + (i < 10 ? "0" : "") + i + ".gif";
            if (this.m_fStandAlone) {
               this.m_Images[i - 1] = Toolkit.getDefaultToolkit().getImage(strImage);
            } else {
               this.m_Images[i - 1] = ((Applet)this).getImage(((Applet)this).getDocumentBase(), strImage);
            }

            tracker.addImage(this.m_Images[i - 1], 0);
            ++i;
         } while(i <= 18);

         try {
            tracker.waitForAll();
            this.m_fAllLoaded = !tracker.isErrorAny();
         } catch (InterruptedException var5) {
         }

         if (!this.m_fAllLoaded) {
            this.stop();
            this.m_Graphics.drawString("Error loading images!", 10, 40);
            return;
         }

         this.m_nImgWidth = this.m_Images[0].getWidth(this);
         this.m_nImgHeight = this.m_Images[0].getHeight(this);
      }

      ((Component)this).repaint();

      while(true) {
         try {
            this.displayImage(this.m_Graphics);
            ++this.m_nCurrImage;
            if (this.m_nCurrImage == 18) {
               this.m_nCurrImage = 0;
            }

            Thread.sleep(50L);
         } catch (InterruptedException var6) {
            this.stop();
         }
      }
   }

   public void destroy() {
   }

   public static void main(String[] args) {
      javabeepFrame frame = new javabeepFrame("javabeep");
      ((Window)frame).show();
      ((Component)frame).hide();
      ((Component)frame).resize(((Container)frame).insets().left + ((Container)frame).insets().right + 320, ((Container)frame).insets().top + ((Container)frame).insets().bottom + 240);
      javabeep applet_javabeep = new javabeep();
      ((Container)frame).add("Center", applet_javabeep);
      applet_javabeep.m_fStandAlone = true;
      applet_javabeep.init();
      applet_javabeep.start();
      ((Window)frame).show();
   }

   public void init() {
      ((Applet)this).resize(320, 240);
   }

   public void paint(Graphics g) {
      if (this.m_fAllLoaded) {
         Rectangle r = g.getClipRect();
         g.clearRect(r.x, r.y, r.width, r.height);
         this.displayImage(g);
      } else {
         g.drawString("Loading images...", 10, 20);
      }

   }
}