Source for org.jfree.chart.plot.dial.DialValueIndicator

   1: /* ===========================================================
   2:  * JFreeChart : a free chart library for the Java(tm) platform
   3:  * ===========================================================
   4:  *
   5:  * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
   6:  *
   7:  * Project Info:  http://www.jfree.org/jfreechart/index.html
   8:  *
   9:  * This library is free software; you can redistribute it and/or modify it 
  10:  * under the terms of the GNU Lesser General Public License as published by 
  11:  * the Free Software Foundation; either version 2.1 of the License, or 
  12:  * (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but 
  15:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
  16:  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
  17:  * License for more details.
  18:  *
  19:  * You should have received a copy of the GNU Lesser General Public
  20:  * License along with this library; if not, write to the Free Software
  21:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
  22:  * USA.  
  23:  *
  24:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
  25:  * in the United States and other countries.]
  26:  *
  27:  * -----------------------
  28:  * DialValueIndicator.java
  29:  * -----------------------
  30:  * (C) Copyright 2006-2007, by Object Refinery Limited.
  31:  *
  32:  * Original Author:  David Gilbert (for Object Refinery Limited);
  33:  * Contributor(s):   -;
  34:  *
  35:  * Changes
  36:  * -------
  37:  * 03-Nov-2006 : Version 1 (DG);
  38:  * 17-Oct-2007 : Updated equals() (DG);
  39:  * 24-Oct-2007 : Added default constructor and missing event notification (DG);
  40:  * 
  41:  */
  42: 
  43: package org.jfree.chart.plot.dial;
  44: 
  45: import java.awt.BasicStroke;
  46: import java.awt.Color;
  47: import java.awt.Font;
  48: import java.awt.FontMetrics;
  49: import java.awt.Graphics2D;
  50: import java.awt.Paint;
  51: import java.awt.Stroke;
  52: import java.awt.geom.Arc2D;
  53: import java.awt.geom.Point2D;
  54: import java.awt.geom.Rectangle2D;
  55: import java.io.IOException;
  56: import java.io.ObjectInputStream;
  57: import java.io.ObjectOutputStream;
  58: import java.io.Serializable;
  59: import java.text.DecimalFormat;
  60: import java.text.NumberFormat;
  61: 
  62: import org.jfree.chart.HashUtilities;
  63: import org.jfree.io.SerialUtilities;
  64: import org.jfree.text.TextUtilities;
  65: import org.jfree.ui.RectangleAnchor;
  66: import org.jfree.ui.RectangleInsets;
  67: import org.jfree.ui.Size2D;
  68: import org.jfree.ui.TextAnchor;
  69: import org.jfree.util.PaintUtilities;
  70: import org.jfree.util.PublicCloneable;
  71: 
  72: /**
  73:  * A value indicator for a {@link DialPlot}.
  74:  */
  75: public class DialValueIndicator extends AbstractDialLayer implements DialLayer, 
  76:         Cloneable, PublicCloneable, Serializable {
  77:     
  78:     /** For serialization. */
  79:     static final long serialVersionUID = 803094354130942585L;
  80: 
  81:     /** The dataset index. */
  82:     private int datasetIndex;
  83:     
  84:     /** The angle that defines the anchor point. */
  85:     private double angle;
  86:     
  87:     /** The radius that defines the anchor point. */
  88:     private double radius;
  89:     
  90:     /** The frame anchor. */
  91:     private RectangleAnchor frameAnchor;
  92:     
  93:     /** The template value. */
  94:     private Number templateValue;
  95:     
  96:     /** The formatter. */
  97:     private NumberFormat formatter;
  98: 
  99:     /** The font. */
 100:     private Font font;
 101:     
 102:     /** The paint. */
 103:     private transient Paint paint;
 104:     
 105:     /** The background paint. */
 106:     private transient Paint backgroundPaint;
 107:     
 108:     /** The outline stroke. */
 109:     private transient Stroke outlineStroke;
 110:     
 111:     /** The outline paint. */
 112:     private transient Paint outlinePaint;
 113:     
 114:     /** The insets. */
 115:     private RectangleInsets insets;
 116:     
 117:     /** The value anchor. */
 118:     private RectangleAnchor valueAnchor;
 119:     
 120:     /** The text anchor for displaying the value. */
 121:     private TextAnchor textAnchor;
 122:     
 123:     /**
 124:      * Creates a new instance of <code>DialValueIndicator</code>.
 125:      */
 126:     public DialValueIndicator() {
 127:         this(0);
 128:     }
 129:     
 130:     /** 
 131:      * Creates a new instance of <code>DialValueIndicator</code>.
 132:      * 
 133:      * @param datasetIndex  the dataset index.
 134:      */
 135:     public DialValueIndicator(int datasetIndex) {
 136:         this.datasetIndex = datasetIndex;
 137:         this.angle = -90.0;
 138:         this.radius = 0.3;
 139:         this.frameAnchor = RectangleAnchor.CENTER;
 140:         this.templateValue = new Double(100.0);
 141:         this.formatter = new DecimalFormat("0.0");
 142:         this.font = new Font("Dialog", Font.BOLD, 14);
 143:         this.paint = Color.black;
 144:         this.backgroundPaint = Color.white;
 145:         this.outlineStroke = new BasicStroke(1.0f);
 146:         this.outlinePaint = Color.blue;
 147:         this.insets = new RectangleInsets(4, 4, 4, 4);
 148:         this.valueAnchor = RectangleAnchor.RIGHT;
 149:         this.textAnchor = TextAnchor.CENTER_RIGHT;
 150:     }
 151:     
 152:     /**
 153:      * Returns the index of the dataset from which this indicator fetches its 
 154:      * current value.
 155:      * 
 156:      * @return The dataset index.
 157:      * 
 158:      * @see #setDatasetIndex(int)
 159:      */
 160:     public int getDatasetIndex() {
 161:         return this.datasetIndex;
 162:     }
 163:     
 164:     /**
 165:      * Sets the dataset index and sends a {@link DialLayerChangeEvent} to all 
 166:      * registered listeners.
 167:      * 
 168:      * @param index  the index.
 169:      * 
 170:      * @see #getDatasetIndex()
 171:      */
 172:     public void setDatasetIndex(int index) {
 173:         this.datasetIndex = index;
 174:         notifyListeners(new DialLayerChangeEvent(this));
 175:     }
 176:     
 177:     /**
 178:      * Returns the angle for the anchor point.  The angle is specified in 
 179:      * degrees using the same orientation as Java's <code>Arc2D</code> class.
 180:      * 
 181:      * @return The angle (in degrees).
 182:      * 
 183:      * @see #setAngle(double)
 184:      */
 185:     public double getAngle() {
 186:         return this.angle;
 187:     }
 188:     
 189:     /**
 190:      * Sets the angle for the anchor point and sends a 
 191:      * {@link DialLayerChangeEvent} to all registered listeners.
 192:      * 
 193:      * @param angle  the angle (in degrees).
 194:      * 
 195:      * @see #getAngle()
 196:      */
 197:     public void setAngle(double angle) {
 198:         this.angle = angle;
 199:         notifyListeners(new DialLayerChangeEvent(this));
 200:     }
 201:     
 202:     /**
 203:      * Returns the radius.
 204:      * 
 205:      * @return The radius.
 206:      * 
 207:      * @see #setRadius(double)
 208:      */
 209:     public double getRadius() {
 210:         return this.radius;
 211:     }
 212:     
 213:     /**
 214:      * Sets the radius and sends a {@link DialLayerChangeEvent} to all 
 215:      * registered listeners.
 216:      * 
 217:      * @param radius  the radius.
 218:      * 
 219:      * @see #getRadius()
 220:      */
 221:     public void setRadius(double radius) {
 222:         this.radius = radius;
 223:         notifyListeners(new DialLayerChangeEvent(this));
 224:     }
 225:     
 226:     /**
 227:      * Returns the frame anchor.
 228:      * 
 229:      * @return The frame anchor.
 230:      * 
 231:      * @see #setFrameAnchor(RectangleAnchor)
 232:      */
 233:     public RectangleAnchor getFrameAnchor() {
 234:         return this.frameAnchor;
 235:     }
 236:     
 237:     /**
 238:      * Sets the frame anchor and sends a {@link DialLayerChangeEvent} to all
 239:      * registered listeners.
 240:      * 
 241:      * @param anchor  the anchor (<code>null</code> not permitted).
 242:      * 
 243:      * @see #getFrameAnchor()
 244:      */
 245:     public void setFrameAnchor(RectangleAnchor anchor) {
 246:         if (anchor == null) {
 247:             throw new IllegalArgumentException("Null 'anchor' argument.");
 248:         }
 249:         this.frameAnchor = anchor;
 250:         notifyListeners(new DialLayerChangeEvent(this));
 251:     }
 252:     
 253:     /**
 254:      * Returns the template value.
 255:      * 
 256:      * @return The template value (never <code>null</code>).
 257:      * 
 258:      * @see #setTemplateValue(Number)
 259:      */
 260:     public Number getTemplateValue() {
 261:         return this.templateValue;
 262:     }
 263:     
 264:     /**
 265:      * Sets the template value and sends a {@link DialLayerChangeEvent} to
 266:      * all registered listeners.
 267:      * 
 268:      * @param value  the value (<code>null</code> not permitted).
 269:      * 
 270:      * @see #setTemplateValue(Number)
 271:      */
 272:     public void setTemplateValue(Number value) {
 273:         if (value == null) {
 274:             throw new IllegalArgumentException("Null 'value' argument.");
 275:         }
 276:         this.templateValue = value;
 277:         notifyListeners(new DialLayerChangeEvent(this));
 278:     }
 279:     
 280:     /**
 281:      * Returns the formatter used to format the value.
 282:      * 
 283:      * @return The formatter (never <code>null</code>).
 284:      * 
 285:      * @see #setNumberFormat(NumberFormat)
 286:      */
 287:     public NumberFormat getNumberFormat() {
 288:         return this.formatter;
 289:     }
 290:     
 291:     /**
 292:      * Sets the formatter used to format the value and sends a 
 293:      * {@link DialLayerChangeEvent} to all registered listeners.
 294:      * 
 295:      * @param formatter  the formatter (<code>null</code> not permitted).
 296:      * 
 297:      * @see #getNumberFormat()
 298:      */
 299:     public void setNumberFormat(NumberFormat formatter) {
 300:         if (formatter == null) {
 301:             throw new IllegalArgumentException("Null 'formatter' argument.");
 302:         }
 303:         this.formatter = formatter;
 304:         notifyListeners(new DialLayerChangeEvent(this));
 305:     }
 306:     
 307:     /**
 308:      * Returns the font.
 309:      * 
 310:      * @return The font (never <code>null</code>).
 311:      * 
 312:      * @see #getFont()
 313:      */
 314:     public Font getFont() {
 315:         return this.font;
 316:     }
 317:     
 318:     /**
 319:      * Sets the font and sends a {@link DialLayerChangeEvent} to all registered
 320:      * listeners.
 321:      * 
 322:      * @param font  the font (<code>null</code> not permitted).
 323:      */
 324:     public void setFont(Font font) {
 325:         if (font == null) {
 326:             throw new IllegalArgumentException("Null 'font' argument.");
 327:         }
 328:         this.font = font;
 329:         notifyListeners(new DialLayerChangeEvent(this));
 330:     }
 331:     
 332:     /**
 333:      * Returns the paint.
 334:      * 
 335:      * @return The paint (never <code>null</code>).
 336:      * 
 337:      * @see #setPaint(Paint)
 338:      */
 339:     public Paint getPaint() {
 340:         return this.paint;
 341:     }
 342:     
 343:     /**
 344:      * Sets the paint and sends a {@link DialLayerChangeEvent} to all 
 345:      * registered listeners.
 346:      * 
 347:      * @param paint  the paint (<code>null</code> not permitted).
 348:      * 
 349:      * @see #getPaint()
 350:      */
 351:     public void setPaint(Paint paint) {
 352:         if (paint == null) {
 353:             throw new IllegalArgumentException("Null 'paint' argument.");
 354:         }
 355:         this.paint = paint;
 356:         notifyListeners(new DialLayerChangeEvent(this));
 357:     }
 358:     
 359:     /**
 360:      * Returns the background paint.
 361:      * 
 362:      * @return The background paint.
 363:      * 
 364:      * @see #setBackgroundPaint(Paint)
 365:      */
 366:     public Paint getBackgroundPaint() {
 367:         return this.backgroundPaint;
 368:     }
 369:     
 370:     /**
 371:      * Sets the background paint and sends a {@link DialLayerChangeEvent} to
 372:      * all registered listeners.
 373:      * 
 374:      * @param paint  the paint (<code>null</code> not permitted).
 375:      * 
 376:      * @see #getBackgroundPaint()
 377:      */
 378:     public void setBackgroundPaint(Paint paint) {
 379:         if (paint == null) {
 380:             throw new IllegalArgumentException("Null 'paint' argument.");
 381:         }
 382:         this.backgroundPaint = paint;
 383:         notifyListeners(new DialLayerChangeEvent(this));      
 384:     }
 385:     
 386:     /**
 387:      * Returns the outline stroke.
 388:      * 
 389:      * @return The outline stroke (never <code>null</code>).
 390:      * 
 391:      * @see #setOutlineStroke(Stroke)
 392:      */
 393:     public Stroke getOutlineStroke() {
 394:         return this.outlineStroke;
 395:     }
 396:      
 397:     /**
 398:      * Sets the outline stroke and sends a {@link DialLayerChangeEvent} to
 399:      * all registered listeners.
 400:      * 
 401:      * @param stroke  the stroke (<code>null</code> not permitted).
 402:      * 
 403:      * @see #getOutlineStroke()
 404:      */
 405:     public void setOutlineStroke(Stroke stroke) {
 406:         if (stroke == null) {
 407:             throw new IllegalArgumentException("Null 'stroke' argument.");
 408:         }
 409:         this.outlineStroke = stroke;
 410:         notifyListeners(new DialLayerChangeEvent(this));
 411:     }
 412:     
 413:     /**
 414:      * Returns the outline paint.
 415:      * 
 416:      * @return The outline paint (never <code>null</code>).
 417:      *
 418:      * @see #setOutlinePaint(Paint)
 419:      */
 420:     public Paint getOutlinePaint() {
 421:         return this.outlinePaint;
 422:     }
 423:     
 424:     /**
 425:      * Sets the outline paint and sends a {@link DialLayerChangeEvent} to all
 426:      * registered listeners.
 427:      * 
 428:      * @param paint  the paint (<code>null</code> not permitted).
 429:      * 
 430:      * @see #getOutlinePaint()
 431:      */
 432:     public void setOutlinePaint(Paint paint) {
 433:         if (paint == null) {
 434:             throw new IllegalArgumentException("Null 'paint' argument.");
 435:         }
 436:         this.outlinePaint = paint;
 437:         notifyListeners(new DialLayerChangeEvent(this));
 438:     }
 439:     
 440:     /**
 441:      * Returns the insets.
 442:      * 
 443:      * @return The insets (never <code>null</code>).
 444:      * 
 445:      * @see #setInsets(RectangleInsets)
 446:      */
 447:     public RectangleInsets getInsets() {
 448:         return this.insets;
 449:     }
 450:     
 451:     /**
 452:      * Sets the insets and sends a {@link DialLayerChangeEvent} to all 
 453:      * registered listeners.
 454:      * 
 455:      * @param insets  the insets (<code>null</code> not permitted).
 456:      * 
 457:      * @see #getInsets()
 458:      */
 459:     public void setInsets(RectangleInsets insets) {
 460:         if (insets == null) {
 461:             throw new IllegalArgumentException("Null 'insets' argument.");
 462:         }
 463:         this.insets = insets;
 464:         notifyListeners(new DialLayerChangeEvent(this));        
 465:     }
 466:     
 467:     /**
 468:      * Returns the value anchor.
 469:      * 
 470:      * @return The value anchor (never <code>null</code>).
 471:      * 
 472:      * @see #setValueAnchor(RectangleAnchor)
 473:      */
 474:     public RectangleAnchor getValueAnchor() {
 475:         return this.valueAnchor;
 476:     }
 477:     
 478:     /**
 479:      * Sets the value anchor and sends a {@link DialLayerChangeEvent} to all
 480:      * registered listeners.
 481:      * 
 482:      * @param anchor  the anchor (<code>null</code> not permitted).
 483:      * 
 484:      * @see #getValueAnchor()
 485:      */
 486:     public void setValueAnchor(RectangleAnchor anchor) {
 487:         if (anchor == null) {
 488:             throw new IllegalArgumentException("Null 'anchor' argument.");
 489:         }
 490:         this.valueAnchor = anchor;
 491:         notifyListeners(new DialLayerChangeEvent(this));                
 492:     }
 493:     
 494:     /**
 495:      * Returns the text anchor.
 496:      * 
 497:      * @return The text anchor (never <code>null</code>).
 498:      * 
 499:      * @see #setTextAnchor(TextAnchor)
 500:      */
 501:     public TextAnchor getTextAnchor() {
 502:         return this.textAnchor;
 503:     }
 504:     
 505:     /**
 506:      * Sets the text anchor and sends a {@link DialLayerChangeEvent} to all 
 507:      * registered listeners.
 508:      * 
 509:      * @param anchor  the anchor (<code>null</code> not permitted).
 510:      * 
 511:      * @see #getTextAnchor()
 512:      */
 513:     public void setTextAnchor(TextAnchor anchor) {
 514:         if (anchor == null) {
 515:             throw new IllegalArgumentException("Null 'anchor' argument.");
 516:         }
 517:         this.textAnchor = anchor;
 518:         notifyListeners(new DialLayerChangeEvent(this));                        
 519:     }
 520:     
 521:     /**
 522:      * Returns <code>true</code> to indicate that this layer should be 
 523:      * clipped within the dial window. 
 524:      *
 525:      * @return <code>true</code>.
 526:      */
 527:     public boolean isClippedToWindow() {
 528:         return true;
 529:     }
 530:     
 531:     /**
 532:      * Draws the background to the specified graphics device.  If the dial
 533:      * frame specifies a window, the clipping region will already have been 
 534:      * set to this window before this method is called.
 535:      *
 536:      * @param g2  the graphics device (<code>null</code> not permitted).
 537:      * @param plot  the plot (ignored here).
 538:      * @param frame  the dial frame (ignored here).
 539:      * @param view  the view rectangle (<code>null</code> not permitted). 
 540:      */
 541:     public void draw(Graphics2D g2, DialPlot plot, Rectangle2D frame, 
 542:             Rectangle2D view) {
 543: 
 544:         // work out the anchor point
 545:         Rectangle2D f = DialPlot.rectangleByRadius(frame, this.radius, 
 546:                 this.radius);
 547:         Arc2D arc = new Arc2D.Double(f, this.angle, 0.0, Arc2D.OPEN);
 548:         Point2D pt = arc.getStartPoint();
 549:         
 550:         // calculate the bounds of the template value
 551:         FontMetrics fm = g2.getFontMetrics(this.font);
 552:         String s = this.formatter.format(this.templateValue);
 553:         Rectangle2D tb = TextUtilities.getTextBounds(s, g2, fm);
 554: 
 555:         // align this rectangle to the frameAnchor
 556:         Rectangle2D bounds = RectangleAnchor.createRectangle(new Size2D(
 557:                 tb.getWidth(), tb.getHeight()), pt.getX(), pt.getY(), 
 558:                 this.frameAnchor);
 559:         
 560:         // add the insets
 561:         Rectangle2D fb = this.insets.createOutsetRectangle(bounds);
 562: 
 563:         // draw the background
 564:         g2.setPaint(this.backgroundPaint);
 565:         g2.fill(fb);
 566: 
 567:         // draw the border
 568:         g2.setStroke(this.outlineStroke);
 569:         g2.setPaint(this.outlinePaint);
 570:         g2.draw(fb);
 571:         
 572:         
 573:         // now find the text anchor point
 574:         double value = plot.getValue(this.datasetIndex);
 575:         String valueStr = this.formatter.format(value);
 576:         Point2D pt2 = RectangleAnchor.coordinates(bounds, this.valueAnchor);
 577:         g2.setPaint(this.paint);
 578:         g2.setFont(this.font);
 579:         TextUtilities.drawAlignedString(valueStr, g2, (float) pt2.getX(), 
 580:                 (float) pt2.getY(), this.textAnchor);
 581:         
 582:     }
 583:     
 584:     /**
 585:      * Tests this instance for equality with an arbitrary object.
 586:      *
 587:      * @param obj  the object (<code>null</code> permitted).
 588:      *
 589:      * @return A boolean.
 590:      */
 591:     public boolean equals(Object obj) {
 592:         if (obj == this) {
 593:             return true;
 594:         }
 595:         if (!(obj instanceof DialValueIndicator)) {
 596:             return false;
 597:         }
 598:         DialValueIndicator that = (DialValueIndicator) obj;
 599:         if (this.datasetIndex != that.datasetIndex) {
 600:             return false;
 601:         }
 602:         if (this.angle != that.angle) {
 603:             return false;
 604:         }
 605:         if (this.radius != that.radius) {
 606:             return false;
 607:         }
 608:         if (!this.frameAnchor.equals(that.frameAnchor)) {
 609:             return false;
 610:         }
 611:         if (!this.templateValue.equals(that.templateValue)) {
 612:             return false;
 613:         }
 614:         if (!this.font.equals(that.font)) {
 615:             return false;
 616:         }
 617:         if (!PaintUtilities.equal(this.paint, that.paint)) {
 618:             return false;
 619:         }
 620:         if (!PaintUtilities.equal(this.backgroundPaint, that.backgroundPaint)) {
 621:             return false;
 622:         }
 623:         if (!this.outlineStroke.equals(that.outlineStroke)) {
 624:             return false;
 625:         }
 626:         if (!PaintUtilities.equal(this.outlinePaint, that.outlinePaint)) {
 627:             return false;
 628:         }
 629:         if (!this.insets.equals(that.insets)) {
 630:             return false;
 631:         }
 632:         if (!this.valueAnchor.equals(that.valueAnchor)) {
 633:             return false;
 634:         }
 635:         if (!this.textAnchor.equals(that.textAnchor)) {
 636:             return false;
 637:         }
 638:         
 639:         return super.equals(obj);
 640:     }
 641:     
 642:     /**
 643:      * Returns a hash code for this instance.
 644:      * 
 645:      * @return The hash code.
 646:      */
 647:     public int hashCode() {
 648:         int result = 193;
 649:         result = 37 * result + HashUtilities.hashCodeForPaint(this.paint);
 650:         result = 37 * result + HashUtilities.hashCodeForPaint(
 651:                 this.backgroundPaint);
 652:         result = 37 * result + HashUtilities.hashCodeForPaint(
 653:                 this.outlinePaint);
 654:         result = 37 * result + this.outlineStroke.hashCode();
 655:         return result;
 656:     }
 657:     
 658:     /**
 659:      * Returns a clone of this instance.
 660:      *
 661:      * @return The clone.
 662:      *
 663:      * @throws CloneNotSupportedException if some attribute of this instance
 664:      *     cannot be cloned.
 665:      */
 666:     public Object clone() throws CloneNotSupportedException {
 667:         return super.clone();
 668:     }
 669: 
 670:     /**
 671:      * Provides serialization support.
 672:      *
 673:      * @param stream  the output stream.
 674:      *
 675:      * @throws IOException  if there is an I/O error.
 676:      */
 677:     private void writeObject(ObjectOutputStream stream) throws IOException {
 678:         stream.defaultWriteObject();
 679:         SerialUtilities.writePaint(this.paint, stream);
 680:         SerialUtilities.writePaint(this.backgroundPaint, stream);
 681:         SerialUtilities.writePaint(this.outlinePaint, stream);
 682:         SerialUtilities.writeStroke(this.outlineStroke, stream);
 683:     }
 684: 
 685:     /**
 686:      * Provides serialization support.
 687:      *
 688:      * @param stream  the input stream.
 689:      *
 690:      * @throws IOException  if there is an I/O error.
 691:      * @throws ClassNotFoundException  if there is a classpath problem.
 692:      */
 693:     private void readObject(ObjectInputStream stream) 
 694:             throws IOException, ClassNotFoundException {
 695:         stream.defaultReadObject();
 696:         this.paint = SerialUtilities.readPaint(stream);
 697:         this.backgroundPaint = SerialUtilities.readPaint(stream);
 698:         this.outlinePaint = SerialUtilities.readPaint(stream);
 699:         this.outlineStroke = SerialUtilities.readStroke(stream);
 700:     }
 701: 
 702: }