MACD 7/MACD7.iso/www/weirdscience/babylon5/applets/textscrollerapplet.class

Java Class File | 1997-10-26 | 8.8 KB | 329 lines

import java.applet.Applet;
import java.applet.AudioClip;
import java.awt.Color;
import java.awt.Component;
import java.awt.Event;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Image;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Hashtable;
import java.util.NoSuchElementException;
import java.util.StringTokenizer;

public class TextScrollerApplet extends Applet implements Runnable {
   private static final int RUNNING = 1;
   private static final int SUSPENDED = 2;
   private static int defaultTimeout = 4;
   private static int defaultScrollDistance = 5;
   private static String defaultScrollingText = "Scrolling Text brought to you by Gregory S. Pogue (http://www.inforamp.net/~pogue/gregory/)";
   private static String defaultFontName = "TimesRoman";
   private static int defaultFontStyle = 1;
   private static int defaultFontSize = 36;
   private static String defaultVerticleAlignment = "CENTER";
   private static Color defaultFontColor;
   private static Color defaultBackgroundColor;
   private static Hashtable myColorCache;
   private static String appletInfoString;
   private static String[][] appletParamList;
   private Thread _kicker;
   private int _kickerState = 1;
   private String _scrollingText;
   private AudioClip _audioClip;
   private boolean _audioLoop = false;
   private Image _frame;
   private Graphics _offscreen;
   private int _waitTimeout;
   private int _scrollDistance;
   private int _anchorX;
   private int _anchorY;
   private Color _fontColor;
   private Color _backgroundColor;

   public void init() {
      Object var2 = null;
      int var4 = 0;
      String var1 = ((Applet)this).getParameter("speed");

      try {
         this._waitTimeout = 1000 / (var1 == null ? defaultTimeout : Integer.valueOf(var1));
      } catch (Exception var13) {
         this._waitTimeout = defaultTimeout;
      }

      var1 = ((Applet)this).getParameter("distance");

      try {
         this._scrollDistance = var1 == null ? defaultScrollDistance : Integer.valueOf(var1);
      } catch (NumberFormatException var12) {
         this._scrollDistance = defaultScrollDistance;
      }

      var1 = ((Applet)this).getParameter("remoteText");
      if (var1 != null) {
         try {
            var25 = new URL(((Applet)this).getDocumentBase(), var1);
         } catch (MalformedURLException var11) {
            var25 = null;
         }

         if (var25 != null) {
            this._scrollingText = this.getRemoteString(var25);
         }
      }

      if (this._scrollingText == null) {
         var1 = ((Applet)this).getParameter("text");
         this._scrollingText = var1 == null ? defaultScrollingText : var1;
      }

      var1 = ((Applet)this).getParameter("font");
      String var3 = var1 == null ? defaultFontName : var1;
      var1 = ((Applet)this).getParameter("size");

      int var5;
      try {
         var5 = var1 == null ? defaultFontSize : Integer.valueOf(var1);
      } catch (NumberFormatException var10) {
         var5 = defaultFontSize;
      }

      var1 = ((Applet)this).getParameter("style");
      if (var1 != null) {
         var1 = var1.toUpperCase();
         var4 += var1.indexOf("BOLD") < 0 ? 0 : 1;
         var4 += var1.indexOf("ITALIC") < 0 ? 0 : 2;
         var4 += var1.indexOf("PLAIN") < 0 ? 0 : 0;
      }

      if (var1 == null || var4 == 0) {
         var4 = defaultFontStyle;
      }

      Font var6 = new Font(var3, var4, var5);
      FontMetrics var7 = ((Component)this).getFontMetrics(var6);
      var1 = ((Applet)this).getParameter("textColor");
      if (var1 != null) {
         this._fontColor = this.colorFromString(var1);
      }

      if (this._fontColor == null) {
         this._fontColor = defaultFontColor;
      }

      var1 = ((Applet)this).getParameter("backgroundColor");
      if (var1 != null) {
         this._backgroundColor = this.colorFromString(var1);
      }

      if (this._backgroundColor == null) {
         this._backgroundColor = defaultBackgroundColor;
      }

      ((Component)this).setBackground(this._backgroundColor);
      var1 = ((Applet)this).getParameter("alignment");
      String var8 = (var1 == null ? defaultVerticleAlignment : var1).toUpperCase();
      if (var8.equals("TOP")) {
         this._anchorY = var7.getHeight() - var7.getDescent();
      } else if (var8.equals("BOTTOM")) {
         this._anchorY = ((Component)this).size().height - var7.getDescent();
      } else {
         this._anchorY = (((Component)this).size().height - var7.getHeight()) / 2 + var7.getLeading() + var7.getAscent();
      }

      var1 = ((Applet)this).getParameter("audioClip");
      if (var1 != null) {
         try {
            this._audioClip = ((Applet)this).getAudioClip(new URL(((Applet)this).getDocumentBase(), var1));
         } catch (MalformedURLException var9) {
            this._audioClip = null;
         }

         if (this._audioClip != null) {
            var1 = ((Applet)this).getParameter("audioLoop");
            if (var1 != null && var1.equalsIgnoreCase("ON")) {
               this._audioLoop = true;
               this._audioClip.loop();
            } else {
               this._audioLoop = false;
               this._audioClip.play();
            }
         }
      }

      this._frame = ((Component)this).createImage(var7.stringWidth(this._scrollingText) + this._scrollDistance * 30, ((Component)this).size().height);
      this._offscreen = this._frame.getGraphics();
      this._offscreen.setFont(var6);
      this._offscreen.setColor(this._backgroundColor);
      this._offscreen.fillRect(0, 0, this._frame.getWidth(this), this._frame.getHeight(this));
      this._offscreen.setColor(this._fontColor);
      this._offscreen.drawString(this._scrollingText, 0, this._anchorY);
   }

   public void start() {
      if (this._kicker == null && this._scrollingText != null) {
         this._kicker = new Thread(this);
         this._anchorX = ((Component)this).size().width;
         if (this._audioClip != null) {
            if (this._audioLoop) {
               this._audioClip.loop();
            } else {
               this._audioClip.play();
            }
         }

         this._kicker.start();
      }

   }

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

      if (this._audioClip != null) {
         this._audioClip.stop();
      }

   }

   public synchronized boolean mouseDown(Event var1, int var2, int var3) {
      if (this._kicker != null) {
         if (this._kickerState == 1) {
            this._kicker.suspend();
            this._kickerState = 2;
            if (this._audioClip != null) {
               this._audioClip.stop();
            }
         } else {
            this._kicker.resume();
            this._kickerState = 1;
            if (this._audioClip != null) {
               if (this._audioLoop) {
                  this._audioClip.loop();
               } else {
                  this._audioClip.play();
               }
            }
         }
      }

      return true;
   }

   public void run() {
      while(true) {
         try {
            Thread.currentThread();
            Thread.sleep((long)this._waitTimeout);
         } catch (InterruptedException var1) {
         }

         this.scrollText(this._scrollDistance);
      }
   }

   private synchronized void scrollText(int var1) {
      this._anchorX = this._anchorX < (this._frame.getWidth(this) + this._scrollDistance) * -1 ? ((Component)this).size().width : this._anchorX - this._scrollDistance;
      ((Component)this).repaint();
   }

   public void update(Graphics var1) {
      this.paint(var1);
   }

   public void paint(Graphics var1) {
      var1.drawImage(this._frame, this._anchorX, 0, this);
   }

   protected String getRemoteString(URL var1) {
      StringBuffer var3 = new StringBuffer();
      int var4 = 0;
      String var5 = null;

      InputStream var2;
      try {
         var2 = var1.openStream();
      } catch (Exception var7) {
         var2 = null;
      }

      if (var2 != null) {
         try {
            while(var4 >= 0) {
               var4 = var2.read();
               if (var4 >= 0) {
                  var3.append((char)var4);
               }
            }

            var5 = var3.toString();
            var2.close();
         } catch (IOException var8) {
            var5 = null;

            try {
               var2.close();
            } catch (IOException var6) {
            }
         }
      }

      return var5;
   }

   protected Color colorFromString(String var1) {
      String var3 = var1.toLowerCase();
      Color var2 = (Color)myColorCache.get(var3);
      if (var2 == null) {
         StringTokenizer var4 = new StringTokenizer(var3, ",./;:-");

         try {
            int var5 = Integer.valueOf(var4.nextToken());
            int var6 = Integer.valueOf(var4.nextToken());
            int var7 = Integer.valueOf(var4.nextToken());
            var2 = new Color(var5, var6, var7);
         } catch (NoSuchElementException var8) {
         } catch (NumberFormatException var9) {
         }
      }

      return var2;
   }

   public String getAppletInfo() {
      return appletInfoString;
   }

   public String[][] getParameterInfo() {
      return appletParamList;
   }

   static {
      defaultFontColor = Color.blue;
      defaultBackgroundColor = Color.white;
      myColorCache = new Hashtable();
      appletInfoString = "TextScrollerApplet, Version 3.00, 18/02/1996, Gregory S. Pogue [[e-mail]]";
      appletParamList = new String[][]{{"speed", "1-1000", "a relative speed adjustment (the larger the number, the faster the text)"}, {"distance", "1-100", "the number of pixels to move the text between each frame"}, {"remoteText", "url", "a url of a file containing the text to scroll (relative or absolute)"}, {"text", "string", "the text to be scrolled (remoteText will override this, unless there is an error reading from the url)"}, {"font", "font", "the name of the font to use for the text"}, {"size", "6-100", "the point size of the font"}, {"style", "BOLD ITALIC PLAIN", "the style of the font (can be a combination)"}, {"textColor", "name or r,g,b", "color of the text (can be specified as Red or 255,0,0)"}, {"backgroundColor", "name or r,g,b", "color of the background (can be specified as Red or 255,0,0)"}, {"alignment", "TOP BOTTOM CENTER", "alignment of the text vertically within the applet"}, {"audioClip", "url", "a url of a file containing audio to play"}, {"audioLoop", "YES NO", "an indicator which allows an audio file to be played continuously"}};
      myColorCache.put("red", Color.red);
      myColorCache.put("green", Color.green);
      myColorCache.put("blue", Color.blue);
      myColorCache.put("cyan", Color.cyan);
      myColorCache.put("magenta", Color.magenta);
      myColorCache.put("yellow", Color.yellow);
      myColorCache.put("orange", Color.orange);
      myColorCache.put("pink", Color.pink);
      myColorCache.put("white", Color.white);
      myColorCache.put("lightgray", Color.lightGray);
      myColorCache.put("gray", Color.gray);
      myColorCache.put("darkgray", Color.darkGray);
      myColorCache.put("black", Color.black);
   }
}