JFreeChart
Overview Package Class Use Source Tree Index Deprecated About Frames | No Frames Source for org.jfree.chart.JFreeChart 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: * JFreeChart.java 29: * --------------- 30: * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors. 31: * 32: * Original Author: David Gilbert (for Object Refinery Limited); 33: * Contributor(s): Andrzej Porebski; 34: * David Li; 35: * Wolfgang Irler; 36: * Christian W. Zuckschwerdt; 37: * Klaus Rheinwald; 38: * Nicolas Brodu; 39: * 40: * NOTE: The above list of contributors lists only the people that have 41: * contributed to this source file (JFreeChart.java) - for a list of ALL 42: * contributors to the project, please see the README.txt file. 43: * 44: * $Id: JFreeChart.java,v 1.34.2.17 2007/03/22 10:53:54 mungady Exp $ 45: * 46: * Changes (from 20-Jun-2001) 47: * -------------------------- 48: * 20-Jun-2001 : Modifications submitted by Andrzej Porebski for legend 49: * placement; 50: * 21-Jun-2001 : Removed JFreeChart parameter from Plot constructors (DG); 51: * 22-Jun-2001 : Multiple titles added (original code by David Berry, with 52: * reworkings by DG); 53: * 18-Sep-2001 : Updated header (DG); 54: * 15-Oct-2001 : Moved data source classes into new package 55: * com.jrefinery.data.* (DG); 56: * 18-Oct-2001 : New factory method for creating VerticalXYBarChart (DG); 57: * 19-Oct-2001 : Moved series paint and stroke methods to the Plot class (DG); 58: * Moved static chart creation methods to new ChartFactory 59: * class (DG); 60: * 22-Oct-2001 : Renamed DataSource.java --> Dataset.java etc. (DG); 61: * Fixed bug where chart isn't registered with the dataset (DG); 62: * 07-Nov-2001 : Fixed bug where null title in constructor causes 63: * exception (DG); 64: * Tidied up event notification code (DG); 65: * 17-Nov-2001 : Added getLegendItemCount() method (DG); 66: * 21-Nov-2001 : Set clipping in draw method to ensure that nothing gets drawn 67: * outside the chart area (DG); 68: * 11-Dec-2001 : Added the createBufferedImage() method, taken from the 69: * JFreeChartServletDemo class (DG); 70: * 13-Dec-2001 : Added tooltips (DG); 71: * 16-Jan-2002 : Added handleClick() method (DG); 72: * 22-Jan-2002 : Fixed bug correlating legend labels with pie data (DG); 73: * 05-Feb-2002 : Removed redundant tooltips code (DG); 74: * 19-Feb-2002 : Added accessor methods for the backgroundImage and 75: * backgroundImageAlpha attributes (DG); 76: * 21-Feb-2002 : Added static fields for INFO, COPYRIGHT, LICENCE, CONTRIBUTORS 77: * and LIBRARIES. These can be used to display information about 78: * JFreeChart (DG); 79: * 06-Mar-2002 : Moved constants to JFreeChartConstants interface (DG); 80: * 18-Apr-2002 : PieDataset is no longer sorted (oldman); 81: * 23-Apr-2002 : Moved dataset to the Plot class (DG); 82: * 13-Jun-2002 : Added an extra draw() method (DG); 83: * 25-Jun-2002 : Implemented the Drawable interface and removed redundant 84: * imports (DG); 85: * 26-Jun-2002 : Added another createBufferedImage() method (DG); 86: * 18-Sep-2002 : Fixed issues reported by Checkstyle (DG); 87: * 23-Sep-2002 : Added new contributor (DG); 88: * 28-Oct-2002 : Created main title and subtitle list to replace existing title 89: * list (DG); 90: * 08-Jan-2003 : Added contributor (DG); 91: * 17-Jan-2003 : Added new constructor (DG); 92: * 22-Jan-2003 : Added ChartColor class by Cameron Riley, and background image 93: * alignment code by Christian W. Zuckschwerdt (DG); 94: * 11-Feb-2003 : Added flag to allow suppression of chart change events, based 95: * on a suggestion by Klaus Rheinwald (DG); 96: * 04-Mar-2003 : Added small fix for suppressed chart change events (see bug id 97: * 690865) (DG); 98: * 10-Mar-2003 : Added Benoit Xhenseval to contributors (DG); 99: * 26-Mar-2003 : Implemented Serializable (DG); 100: * 15-Jul-2003 : Added an optional border for the chart (DG); 101: * 11-Sep-2003 : Took care of listeners while cloning (NB); 102: * 16-Sep-2003 : Changed ChartRenderingInfo --> PlotRenderingInfo (DG); 103: * 22-Sep-2003 : Added nullpointer checks. 104: * 25-Sep-2003 : Added nullpointer checks too (NB). 105: * 03-Dec-2003 : Legends are now registered by this class instead of using the 106: * old constructor way (TM); 107: * 03-Dec-2003 : Added anchorPoint to draw() method (DG); 108: * 08-Jan-2004 : Reworked title code, introducing line wrapping (DG); 109: * 09-Feb-2004 : Created additional createBufferedImage() method (DG); 110: * 05-Apr-2004 : Added new createBufferedImage() method (DG); 111: * 27-May-2004 : Moved constants from JFreeChartConstants.java back to this 112: * class (DG); 113: * 25-Nov-2004 : Updates for changes to Title class (DG); 114: * 06-Jan-2005 : Change lookup for default background color (DG); 115: * 31-Jan-2005 : Added Don Elliott to contributors (DG); 116: * 02-Feb-2005 : Added clearSubtitles() method (DG); 117: * 03-Feb-2005 : Added Mofeed Shahin to contributors (DG); 118: * 08-Feb-2005 : Updated for RectangleConstraint changes (DG); 119: * 28-Mar-2005 : Renamed Legend --> OldLegend (DG); 120: * 12-Apr-2005 : Added methods to access legend(s) in subtitle list (DG); 121: * 13-Apr-2005 : Added removeLegend() and removeSubtitle() methods (DG); 122: * 20-Apr-2005 : Modified to collect chart entities from titles and 123: * subtitles (DG); 124: * 26-Apr-2005 : Removed LOGGER (DG); 125: * 06-Jun-2005 : Added addLegend() method and padding attribute, fixed equals() 126: * method (DG); 127: * 24-Nov-2005 : Removed OldLegend and related code - don't want to support 128: * this in 1.0.0 final (DG); 129: * ------------- JFREECHART 1.0.x --------------------------------------------- 130: * 27-Jan-2006 : Updated version number (DG); 131: * 07-Dec-2006 : Added some missing credits (DG); 132: * 17-Jan-2007 : Added Darren Jung to contributor list (DG); 133: * 05-Mar-2007 : Added Sergei Ivanov to the contributor list (DG); 134: * 16-Mar-2007 : Modified initial legend border (DG); 135: * 22-Mar-2007 : New methods for text anti-aliasing (DG); 136: * 137: */ 138: 139: package org.jfree.chart; 140: 141: import java.awt.AlphaComposite; 142: import java.awt.BasicStroke; 143: import java.awt.Color; 144: import java.awt.Composite; 145: import java.awt.Font; 146: import java.awt.Graphics2D; 147: import java.awt.Image; 148: import java.awt.Paint; 149: import java.awt.RenderingHints; 150: import java.awt.Shape; 151: import java.awt.Stroke; 152: import java.awt.geom.AffineTransform; 153: import java.awt.geom.Point2D; 154: import java.awt.geom.Rectangle2D; 155: import java.awt.image.BufferedImage; 156: import java.io.IOException; 157: import java.io.ObjectInputStream; 158: import java.io.ObjectOutputStream; 159: import java.io.Serializable; 160: import java.net.URL; 161: import java.util.ArrayList; 162: import java.util.Arrays; 163: import java.util.Iterator; 164: import java.util.List; 165: import java.util.ResourceBundle; 166: 167: import javax.swing.ImageIcon; 168: import javax.swing.UIManager; 169: import javax.swing.event.EventListenerList; 170: 171: import org.jfree.JCommon; 172: import org.jfree.chart.block.BlockParams; 173: import org.jfree.chart.block.EntityBlockResult; 174: import org.jfree.chart.block.LengthConstraintType; 175: import org.jfree.chart.block.LineBorder; 176: import org.jfree.chart.block.RectangleConstraint; 177: import org.jfree.chart.entity.EntityCollection; 178: import org.jfree.chart.event.ChartChangeEvent; 179: import org.jfree.chart.event.ChartChangeListener; 180: import org.jfree.chart.event.ChartProgressEvent; 181: import org.jfree.chart.event.ChartProgressListener; 182: import org.jfree.chart.event.PlotChangeEvent; 183: import org.jfree.chart.event.PlotChangeListener; 184: import org.jfree.chart.event.TitleChangeEvent; 185: import org.jfree.chart.event.TitleChangeListener; 186: import org.jfree.chart.plot.CategoryPlot; 187: import org.jfree.chart.plot.Plot; 188: import org.jfree.chart.plot.PlotRenderingInfo; 189: import org.jfree.chart.plot.XYPlot; 190: import org.jfree.chart.title.LegendTitle; 191: import org.jfree.chart.title.TextTitle; 192: import org.jfree.chart.title.Title; 193: import org.jfree.data.Range; 194: import org.jfree.io.SerialUtilities; 195: import org.jfree.ui.Align; 196: import org.jfree.ui.Drawable; 197: import org.jfree.ui.HorizontalAlignment; 198: import org.jfree.ui.RectangleEdge; 199: import org.jfree.ui.RectangleInsets; 200: import org.jfree.ui.Size2D; 201: import org.jfree.ui.VerticalAlignment; 202: import org.jfree.ui.about.Contributor; 203: import org.jfree.ui.about.Licences; 204: import org.jfree.ui.about.ProjectInfo; 205: import org.jfree.util.ObjectUtilities; 206: import org.jfree.util.PaintUtilities; 207: 208: /** 209: * A chart class implemented using the Java 2D APIs. The current version 210: * supports bar charts, line charts, pie charts and xy plots (including time 211: * series data). 212: * <P> 213: * JFreeChart coordinates several objects to achieve its aim of being able to 214: * draw a chart on a Java 2D graphics device: a list of {@link Title} objects 215: * (which often includes the chart's legend), a {@link Plot} and a 216: * {@link org.jfree.data.general.Dataset} (the plot in turn manages a 217: * domain axis and a range axis). 218: * <P> 219: * You should use a {@link ChartPanel} to display a chart in a GUI. 220: * <P> 221: * The {@link ChartFactory} class contains static methods for creating 222: * 'ready-made' charts. 223: * 224: * @see ChartPanel 225: * @see ChartFactory 226: * @see Title 227: * @see Plot 228: */ 229: public class JFreeChart implements Drawable, 230: TitleChangeListener, 231: PlotChangeListener, 232: Serializable, 233: Cloneable { 234: 235: /** For serialization. */ 236: private static final long serialVersionUID = -3470703747817429120L; 237: 238: /** Information about the project. */ 239: public static final ProjectInfo INFO = new JFreeChartInfo(); 240: 241: /** The default font for titles. */ 242: public static final Font DEFAULT_TITLE_FONT 243: = new Font("SansSerif", Font.BOLD, 18); 244: 245: /** The default background color. */ 246: public static final Paint DEFAULT_BACKGROUND_PAINT 247: = UIManager.getColor("Panel.background"); 248: 249: /** The default background image. */ 250: public static final Image DEFAULT_BACKGROUND_IMAGE = null; 251: 252: /** The default background image alignment. */ 253: public static final int DEFAULT_BACKGROUND_IMAGE_ALIGNMENT = Align.FIT; 254: 255: /** The default background image alpha. */ 256: public static final float DEFAULT_BACKGROUND_IMAGE_ALPHA = 0.5f; 257: 258: /** 259: * Rendering hints that will be used for chart drawing. This should never 260: * be <code>null</code>. 261: */ 262: private transient RenderingHints renderingHints; 263: 264: /** A flag that controls whether or not the chart border is drawn. */ 265: private boolean borderVisible; 266: 267: /** The stroke used to draw the chart border (if visible). */ 268: private transient Stroke borderStroke; 269: 270: /** The paint used to draw the chart border (if visible). */ 271: private transient Paint borderPaint; 272: 273: /** The padding between the chart border and the chart drawing area. */ 274: private RectangleInsets padding; 275: 276: /** The chart title (optional). */ 277: private TextTitle title; 278: 279: /** The chart subtitles (zero, one or many). */ 280: private List subtitles; 281: 282: /** Draws the visual representation of the data. */ 283: private Plot plot; 284: 285: /** Paint used to draw the background of the chart. */ 286: private transient Paint backgroundPaint; 287: 288: /** An optional background image for the chart. */ 289: private transient Image backgroundImage; // todo: not serialized yet 290: 291: /** The alignment for the background image. */ 292: private int backgroundImageAlignment = Align.FIT; 293: 294: /** The alpha transparency for the background image. */ 295: private float backgroundImageAlpha = 0.5f; 296: 297: /** Storage for registered change listeners. */ 298: private transient EventListenerList changeListeners; 299: 300: /** Storage for registered progress listeners. */ 301: private transient EventListenerList progressListeners; 302: 303: /** 304: * A flag that can be used to enable/disable notification of chart change 305: * events. 306: */ 307: private boolean notify; 308: 309: /** 310: * Creates a new chart based on the supplied plot. The chart will have 311: * a legend added automatically, but no title (although you can easily add 312: * one later). 313: * <br><br> 314: * Note that the {@link ChartFactory} class contains a range 315: * of static methods that will return ready-made charts, and often this 316: * is a more convenient way to create charts than using this constructor. 317: * 318: * @param plot the plot (<code>null</code> not permitted). 319: */ 320: public JFreeChart(Plot plot) { 321: this(null, null, plot, true); 322: } 323: 324: /** 325: * Creates a new chart with the given title and plot. A default font 326: * (@link DEFAULT_TITLE_FONT) is used for the title, and the chart will 327: * have a legend added automatically. 328: * <br><br> 329: * Note that the {@link ChartFactory} class contains a range 330: * of static methods that will return ready-made charts, and often this 331: * is a more convenient way to create charts than using this constructor. 332: * 333: * @param title the chart title (<code>null</code> permitted). 334: * @param plot the plot (<code>null</code> not permitted). 335: */ 336: public JFreeChart(String title, Plot plot) { 337: this(title, JFreeChart.DEFAULT_TITLE_FONT, plot, true); 338: } 339: 340: /** 341: * Creates a new chart with the given title and plot. The 342: * <code>createLegend</code> argument specifies whether or not a legend 343: * should be added to the chart. 344: * <br><br> 345: * Note that the {@link ChartFactory} class contains a range 346: * of static methods that will return ready-made charts, and often this 347: * is a more convenient way to create charts than using this constructor. 348: * 349: * @param title the chart title (<code>null</code> permitted). 350: * @param titleFont the font for displaying the chart title 351: * (<code>null</code> permitted). 352: * @param plot controller of the visual representation of the data 353: * (<code>null</code> not permitted). 354: * @param createLegend a flag indicating whether or not a legend should 355: * be created for the chart. 356: */ 357: public JFreeChart(String title, Font titleFont, Plot plot, 358: boolean createLegend) { 359: 360: if (plot == null) { 361: throw new NullPointerException("Null 'plot' argument."); 362: } 363: 364: // create storage for listeners... 365: this.progressListeners = new EventListenerList(); 366: this.changeListeners = new EventListenerList(); 367: this.notify = true; // default is to notify listeners when the 368: // chart changes 369: 370: this.renderingHints = new RenderingHints( 371: RenderingHints.KEY_ANTIALIASING, 372: RenderingHints.VALUE_ANTIALIAS_ON); 373: 374: this.borderVisible = false; 375: this.borderStroke = new BasicStroke(1.0f); 376: this.borderPaint = Color.black; 377: 378: this.padding = RectangleInsets.ZERO_INSETS; 379: 380: this.plot = plot; 381: plot.addChangeListener(this); 382: 383: this.subtitles = new ArrayList(); 384: 385: // create a legend, if requested... 386: if (createLegend) { 387: LegendTitle legend = new LegendTitle(this.plot); 388: legend.setMargin(new RectangleInsets(1.0, 1.0, 1.0, 1.0)); 389: legend.setFrame(new LineBorder()); 390: legend.setBackgroundPaint(Color.white); 391: legend.setPosition(RectangleEdge.BOTTOM); 392: this.subtitles.add(legend); 393: } 394: 395: // add the chart title, if one has been specified... 396: if (title != null) { 397: if (titleFont == null) { 398: titleFont = DEFAULT_TITLE_FONT; 399: } 400: this.title = new TextTitle(title, titleFont); 401: this.title.addChangeListener(this); 402: } 403: 404: this.backgroundPaint = DEFAULT_BACKGROUND_PAINT; 405: 406: this.backgroundImage = DEFAULT_BACKGROUND_IMAGE; 407: this.backgroundImageAlignment = DEFAULT_BACKGROUND_IMAGE_ALIGNMENT; 408: this.backgroundImageAlpha = DEFAULT_BACKGROUND_IMAGE_ALPHA; 409: 410: } 411: 412: /** 413: * Returns the collection of rendering hints for the chart. 414: * 415: * @return The rendering hints for the chart (never <code>null</code>). 416: * 417: * @see #setRenderingHints(RenderingHints) 418: */ 419: public RenderingHints getRenderingHints() { 420: return this.renderingHints; 421: } 422: 423: /** 424: * Sets the rendering hints for the chart. These will be added (using the 425: * Graphics2D.addRenderingHints() method) near the start of the 426: * JFreeChart.draw() method. 427: * 428: * @param renderingHints the rendering hints (<code>null</code> not 429: * permitted). 430: * 431: * @see #getRenderingHints() 432: */ 433: public void setRenderingHints(RenderingHints renderingHints) { 434: if (renderingHints == null) { 435: throw new NullPointerException("RenderingHints given are null"); 436: } 437: this.renderingHints = renderingHints; 438: fireChartChanged(); 439: } 440: 441: /** 442: * Returns a flag that controls whether or not a border is drawn around the 443: * outside of the chart. 444: * 445: * @return A boolean. 446: * 447: * @see #setBorderVisible(boolean) 448: */ 449: public boolean isBorderVisible() { 450: return this.borderVisible; 451: } 452: 453: /** 454: * Sets a flag that controls whether or not a border is drawn around the 455: * outside of the chart. 456: * 457: * @param visible the flag. 458: * 459: * @see #isBorderVisible() 460: */ 461: public void setBorderVisible(boolean visible) { 462: this.borderVisible = visible; 463: fireChartChanged(); 464: } 465: 466: /** 467: * Returns the stroke used to draw the chart border (if visible). 468: * 469: * @return The border stroke. 470: * 471: * @see #setBorderStroke(Stroke) 472: */ 473: public Stroke getBorderStroke() { 474: return this.borderStroke; 475: } 476: 477: /** 478: * Sets the stroke used to draw the chart border (if visible). 479: * 480: * @param stroke the stroke. 481: * 482: * @see #getBorderStroke() 483: */ 484: public void setBorderStroke(Stroke stroke) { 485: this.borderStroke = stroke; 486: fireChartChanged(); 487: } 488: 489: /** 490: * Returns the paint used to draw the chart border (if visible). 491: * 492: * @return The border paint. 493: * 494: * @see #setBorderPaint(Paint) 495: */ 496: public Paint getBorderPaint() { 497: return this.borderPaint; 498: } 499: 500: /** 501: * Sets the paint used to draw the chart border (if visible). 502: * 503: * @param paint the paint. 504: * 505: * @see #getBorderPaint() 506: */ 507: public void setBorderPaint(Paint paint) { 508: this.borderPaint = paint; 509: fireChartChanged(); 510: } 511: 512: /** 513: * Returns the padding between the chart border and the chart drawing area. 514: * 515: * @return The padding (never <code>null</code>). 516: * 517: * @see #setPadding(RectangleInsets) 518: */ 519: public RectangleInsets getPadding() { 520: return this.padding; 521: } 522: 523: /** 524: * Sets the padding between the chart border and the chart drawing area, 525: * and sends a {@link ChartChangeEvent} to all registered listeners. 526: * 527: * @param padding the padding (<code>null</code> not permitted). 528: * 529: * @see #getPadding() 530: */ 531: public void setPadding(RectangleInsets padding) { 532: if (padding == null) { 533: throw new IllegalArgumentException("Null 'padding' argument."); 534: } 535: this.padding = padding; 536: notifyListeners(new ChartChangeEvent(this)); 537: } 538: 539: /** 540: * Returns the main chart title. Very often a chart will have just one 541: * title, so we make this case simple by providing accessor methods for 542: * the main title. However, multiple titles are supported - see the 543: * {@link #addSubtitle(Title)} method. 544: * 545: * @return The chart title (possibly <code>null</code>). 546: * 547: * @see #setTitle(TextTitle) 548: */ 549: public TextTitle getTitle() { 550: return this.title; 551: } 552: 553: /** 554: * Sets the main title for the chart and sends a {@link ChartChangeEvent} 555: * to all registered listeners. If you do not want a title for the 556: * chart, set it to <code>null</code>. If you want more than one title on 557: * a chart, use the {@link #addSubtitle(Title)} method. 558: * 559: * @param title the title (<code>null</code> permitted). 560: * 561: * @see #getTitle() 562: */ 563: public void setTitle(TextTitle title) { 564: this.title = title; 565: fireChartChanged(); 566: } 567: 568: /** 569: * Sets the chart title and sends a {@link ChartChangeEvent} to all 570: * registered listeners. This is a convenience method that ends up calling 571: * the {@link #setTitle(TextTitle)} method. If there is an existing title, 572: * its text is updated, otherwise a new title using the default font is 573: * added to the chart. If <code>text</code> is <code>null</code> the chart 574: * title is set to <code>null</code>. 575: * 576: * @param text the title text (<code>null</code> permitted). 577: * 578: * @see #getTitle() 579: */ 580: public void setTitle(String text) { 581: if (text != null) { 582: if (this.title == null) { 583: setTitle(new TextTitle(text, JFreeChart.DEFAULT_TITLE_FONT)); 584: } 585: else { 586: this.title.setText(text); 587: } 588: } 589: else { 590: setTitle((TextTitle) null); 591: } 592: } 593: 594: /** 595: * Adds a legend to the plot and sends a {@link ChartChangeEvent} to all 596: * registered listeners. 597: * 598: * @param legend the legend (<code>null</code> not permitted). 599: * 600: * @see #removeLegend() 601: */ 602: public void addLegend(LegendTitle legend) { 603: addSubtitle(legend); 604: } 605: 606: /** 607: * Returns the legend for the chart, if there is one. Note that a chart 608: * can have more than one legend - this method returns the first. 609: * 610: * @return The legend (possibly <code>null</code>). 611: * 612: * @see #getLegend(int) 613: */ 614: public LegendTitle getLegend() { 615: return getLegend(0); 616: } 617: 618: /** 619: * Returns the nth legend for a chart, or <code>null</code>. 620: * 621: * @param index the legend index (zero-based). 622: * 623: * @return The legend (possibly <code>null</code>). 624: * 625: * @see #addLegend(LegendTitle) 626: */ 627: public LegendTitle getLegend(int index) { 628: int seen = 0; 629: Iterator iterator = this.subtitles.iterator(); 630: while (iterator.hasNext()) { 631: Title subtitle = (Title) iterator.next(); 632: if (subtitle instanceof LegendTitle) { 633: if (seen == index) { 634: return (LegendTitle) subtitle; 635: } 636: else { 637: seen++; 638: } 639: } 640: } 641: return null; 642: } 643: 644: /** 645: * Removes the first legend in the chart and sends a 646: * {@link ChartChangeEvent} to all registered listeners. 647: * 648: * @see #getLegend() 649: */ 650: public void removeLegend() { 651: removeSubtitle(getLegend()); 652: } 653: 654: /** 655: * Returns the list of subtitles for the chart. 656: * 657: * @return The subtitle list (possibly empty, but never <code>null</code>). 658: * 659: * @see #setSubtitles(List) 660: */ 661: public List getSubtitles() { 662: return this.subtitles; 663: } 664: 665: /** 666: * Sets the title list for the chart (completely replaces any existing 667: * titles). 668: * 669: * @param subtitles the new list of subtitles (<code>null</code> not 670: * permitted). 671: * 672: * @see #getSubtitles() 673: */ 674: public void setSubtitles(List subtitles) { 675: if (subtitles == null) { 676: throw new NullPointerException("Null 'subtitles' argument."); 677: } 678: this.subtitles = subtitles; 679: fireChartChanged(); 680: } 681: 682: /** 683: * Returns the number of titles for the chart. 684: * 685: * @return The number of titles for the chart. 686: * 687: * @see #getSubtitles() 688: */ 689: public int getSubtitleCount() { 690: return this.subtitles.size(); 691: } 692: 693: /** 694: * Returns a chart subtitle. 695: * 696: * @param index the index of the chart subtitle (zero based). 697: * 698: * @return A chart subtitle. 699: * 700: * @see #addSubtitle(Title) 701: */ 702: public Title getSubtitle(int index) { 703: if ((index < 0) || (index == getSubtitleCount())) { 704: throw new IllegalArgumentException("Index out of range."); 705: } 706: return (Title) this.subtitles.get(index); 707: } 708: 709: /** 710: * Adds a chart subtitle, and notifies registered listeners that the chart 711: * has been modified. 712: * 713: * @param subtitle the subtitle (<code>null</code> not permitted). 714: * 715: * @see #getSubtitle(int) 716: */ 717: public void addSubtitle(Title subtitle) { 718: if (subtitle == null) { 719: throw new IllegalArgumentException("Null 'subtitle' argument."); 720: } 721: this.subtitles.add(subtitle); 722: subtitle.addChangeListener(this); 723: fireChartChanged(); 724: } 725: 726: /** 727: * Clears all subtitles from the chart and sends a {@link ChartChangeEvent} 728: * to all registered listeners. 729: * 730: * @see #addSubtitle(Title) 731: */ 732: public void clearSubtitles() { 733: Iterator iterator = this.subtitles.iterator(); 734: while (iterator.hasNext()) { 735: Title t = (Title) iterator.next(); 736: t.removeChangeListener(this); 737: } 738: this.subtitles.clear(); 739: fireChartChanged(); 740: } 741: 742: /** 743: * Removes the specified subtitle and sends a {@link ChartChangeEvent} to 744: * all registered listeners. 745: * 746: * @param title the title. 747: * 748: * @see #addSubtitle(Title) 749: */ 750: public void removeSubtitle(Title title) { 751: this.subtitles.remove(title); 752: fireChartChanged(); 753: } 754: 755: /** 756: * Returns the plot for the chart. The plot is a class responsible for 757: * coordinating the visual representation of the data, including the axes 758: * (if any). 759: * 760: * @return The plot. 761: */ 762: public Plot getPlot() { 763: return this.plot; 764: } 765: 766: /** 767: * Returns the plot cast as a {@link CategoryPlot}. 768: * <p> 769: * NOTE: if the plot is not an instance of {@link CategoryPlot}, then a 770: * <code>ClassCastException</code> is thrown. 771: * 772: * @return The plot. 773: * 774: * @see #getPlot() 775: */ 776: public CategoryPlot getCategoryPlot() { 777: return (CategoryPlot) this.plot; 778: } 779: 780: /** 781: * Returns the plot cast as an {@link XYPlot}. 782: * <p> 783: * NOTE: if the plot is not an instance of {@link XYPlot}, then a 784: * <code>ClassCastException</code> is thrown. 785: * 786: * @return The plot. 787: * 788: * @see #getPlot() 789: */ 790: public XYPlot getXYPlot() { 791: return (XYPlot) this.plot; 792: } 793: 794: /** 795: * Returns a flag that indicates whether or not anti-aliasing is used when 796: * the chart is drawn. 797: * 798: * @return The flag. 799: * 800: * @see #setAntiAlias(boolean) 801: */ 802: public boolean getAntiAlias() { 803: Object val = this.renderingHints.get(RenderingHints.KEY_ANTIALIASING); 804: return RenderingHints.VALUE_ANTIALIAS_ON.equals(val); 805: } 806: 807: /** 808: * Sets a flag that indicates whether or not anti-aliasing is used when the 809: * chart is drawn. 810: * <P> 811: * Anti-aliasing usually improves the appearance of charts, but is slower. 812: * 813: * @param flag the new value of the flag. 814: * 815: * @see #getAntiAlias() 816: */ 817: public void setAntiAlias(boolean flag) { 818: 819: Object val = this.renderingHints.get(RenderingHints.KEY_ANTIALIASING); 820: if (val == null) { 821: val = RenderingHints.VALUE_ANTIALIAS_DEFAULT; 822: } 823: if (!flag && RenderingHints.VALUE_ANTIALIAS_OFF.equals(val) 824: || flag && RenderingHints.VALUE_ANTIALIAS_ON.equals(val)) { 825: // no change, do nothing 826: return; 827: } 828: if (flag) { 829: this.renderingHints.put(RenderingHints.KEY_ANTIALIASING, 830: RenderingHints.VALUE_ANTIALIAS_ON); 831: } 832: else { 833: this.renderingHints.put(RenderingHints.KEY_ANTIALIASING, 834: RenderingHints.VALUE_ANTIALIAS_OFF); 835: } 836: fireChartChanged(); 837: 838: } 839: 840: /** 841: * Returns the current value stored in the rendering hints table for 842: * {@link RenderingHints#KEY_TEXT_ANTIALIASING}. 843: * 844: * @return The hint value (possibly <code>null</code>). 845: * 846: * @since 1.0.5 847: * 848: * @see #setTextAntiAlias(Object) 849: */ 850: public Object getTextAntiAlias() { 851: return this.renderingHints.get(RenderingHints.KEY_TEXT_ANTIALIASING); 852: } 853: 854: /** 855: * Sets the value in the rendering hints table for 856: * {@link RenderingHints#KEY_TEXT_ANTIALIASING} to either 857: * {@link RenderingHints#VALUE_TEXT_ANTIALIAS_ON} or 858: * {@link RenderingHints#VALUE_TEXT_ANTIALIAS_OFF}, then sends a 859: * {@link ChartChangeEvent} to all registered listeners. 860: * 861: * @param flag 862: * 863: * @since 1.0.5 864: * 865: * @see #getTextAntiAlias() 866: * @see #setTextAntiAlias(Object) 867: */ 868: public void setTextAntiAlias(boolean flag) { 869: if (flag) { 870: setTextAntiAlias(RenderingHints.VALUE_TEXT_ANTIALIAS_ON); 871: } 872: else { 873: setTextAntiAlias(RenderingHints.VALUE_TEXT_ANTIALIAS_OFF); 874: } 875: } 876: 877: /** 878: * Sets the value in the rendering hints table for 879: * {@link RenderingHints#KEY_TEXT_ANTIALIASING} and sends a 880: * {@link ChartChangeEvent} to all registered listeners. 881: * 882: * @param val the new value (<code>null</code> permitted). 883: * 884: * @since 1.0.5 885: * 886: * @see #getTextAntiAlias() 887: * @see #setTextAntiAlias(boolean) 888: */ 889: public void setTextAntiAlias(Object val) { 890: this.renderingHints.put(RenderingHints.KEY_TEXT_ANTIALIASING, val); 891: this.notifyListeners(new ChartChangeEvent(this)); 892: } 893: 894: /** 895: * Returns the paint used for the chart background. 896: * 897: * @return The paint (possibly <code>null</code>). 898: * 899: * @see #setBackgroundPaint(Paint) 900: */ 901: public Paint getBackgroundPaint() { 902: return this.backgroundPaint; 903: } 904: 905: /** 906: * Sets the paint used to fill the chart background and sends a 907: * {@link ChartChangeEvent} to all registered listeners. 908: * 909: * @param paint the paint (<code>null</code> permitted). 910: * 911: * @see #getBackgroundPaint() 912: */ 913: public void setBackgroundPaint(Paint paint) { 914: 915: if (this.backgroundPaint != null) { 916: if (!this.backgroundPaint.equals(paint)) { 917: this.backgroundPaint = paint; 918: fireChartChanged(); 919: } 920: } 921: else { 922: if (paint != null) { 923: this.backgroundPaint = paint; 924: fireChartChanged(); 925: } 926: } 927: 928: } 929: 930: /** 931: * Returns the background image for the chart, or <code>null</code> if 932: * there is no image. 933: * 934: * @return The image (possibly <code>null</code>). 935: * 936: * @see #setBackgroundImage(Image) 937: */ 938: public Image getBackgroundImage() { 939: return this.backgroundImage; 940: } 941: 942: /** 943: * Sets the background image for the chart and sends a 944: * {@link ChartChangeEvent} to all registered listeners. 945: * 946: * @param image the image (<code>null</code> permitted). 947: * 948: * @see #getBackgroundImage() 949: */ 950: public void setBackgroundImage(Image image) { 951: 952: if (this.backgroundImage != null) { 953: if (!this.backgroundImage.equals(image)) { 954: this.backgroundImage = image; 955: fireChartChanged(); 956: } 957: } 958: else { 959: if (image != null) { 960: this.backgroundImage = image; 961: fireChartChanged(); 962: } 963: } 964: 965: } 966: 967: /** 968: * Returns the background image alignment. Alignment constants are defined 969: * in the <code>org.jfree.ui.Align</code> class in the JCommon class 970: * library. 971: * 972: * @return The alignment. 973: * 974: * @see #setBackgroundImageAlignment(int) 975: */ 976: public int getBackgroundImageAlignment() { 977: return this.backgroundImageAlignment; 978: } 979: 980: /** 981: * Sets the background alignment. Alignment options are defined by the 982: * {@link org.jfree.ui.Align} class. 983: * 984: * @param alignment the alignment. 985: * 986: * @see #getBackgroundImageAlignment() 987: */ 988: public void setBackgroundImageAlignment(int alignment) { 989: if (this.backgroundImageAlignment != alignment) { 990: this.backgroundImageAlignment = alignment; 991: fireChartChanged(); 992: } 993: } 994: 995: /** 996: * Returns the alpha-transparency for the chart's background image. 997: * 998: * @return The alpha-transparency. 999: * 1000: * @see #setBackgroundImageAlpha(float) 1001: */ 1002: public float getBackgroundImageAlpha() { 1003: return this.backgroundImageAlpha; 1004: } 1005: 1006: /** 1007: * Sets the alpha-transparency for the chart's background image. 1008: * Registered listeners are notified that the chart has been changed. 1009: * 1010: * @param alpha the alpha value. 1011: * 1012: * @see #getBackgroundImageAlpha() 1013: */ 1014: public void setBackgroundImageAlpha(float alpha) { 1015: 1016: if (this.backgroundImageAlpha != alpha) { 1017: this.backgroundImageAlpha = alpha; 1018: fireChartChanged(); 1019: } 1020: 1021: } 1022: 1023: /** 1024: * Returns a flag that controls whether or not change events are sent to 1025: * registered listeners. 1026: * 1027: * @return A boolean. 1028: * 1029: * @see #setNotify(boolean) 1030: */ 1031: public boolean isNotify() { 1032: return this.notify; 1033: } 1034: 1035: /** 1036: * Sets a flag that controls whether or not listeners receive 1037: * {@link ChartChangeEvent} notifications. 1038: * 1039: * @param notify a boolean. 1040: * 1041: * @see #isNotify() 1042: */ 1043: public void setNotify(boolean notify) { 1044: this.notify = notify; 1045: // if the flag is being set to true, there may be queued up changes... 1046: if (notify) { 1047: notifyListeners(new ChartChangeEvent(this)); 1048: } 1049: } 1050: 1051: /** 1052: * Draws the chart on a Java 2D graphics device (such as the screen or a 1053: * printer). 1054: * <P> 1055: * This method is the focus of the entire JFreeChart library. 1056: * 1057: * @param g2 the graphics device. 1058: * @param area the area within which the chart should be drawn. 1059: */ 1060: public void draw(Graphics2D g2, Rectangle2D area) { 1061: draw(g2, area, null, null); 1062: } 1063: 1064: /** 1065: * Draws the chart on a Java 2D graphics device (such as the screen or a 1066: * printer). This method is the focus of the entire JFreeChart library. 1067: * 1068: * @param g2 the graphics device. 1069: * @param area the area within which the chart should be drawn. 1070: * @param info records info about the drawing (null means collect no info). 1071: */ 1072: public void draw(Graphics2D g2, Rectangle2D area, ChartRenderingInfo info) { 1073: draw(g2, area, null, info); 1074: } 1075: 1076: /** 1077: * Draws the chart on a Java 2D graphics device (such as the screen or a 1078: * printer). 1079: * <P> 1080: * This method is the focus of the entire JFreeChart library. 1081: * 1082: * @param g2 the graphics device. 1083: * @param chartArea the area within which the chart should be drawn. 1084: * @param anchor the anchor point (in Java2D space) for the chart 1085: * (<code>null</code> permitted). 1086: * @param info records info about the drawing (null means collect no info). 1087: */ 1088: public void draw(Graphics2D g2, 1089: Rectangle2D chartArea, Point2D anchor, 1090: ChartRenderingInfo info) { 1091: 1092: notifyListeners(new ChartProgressEvent(this, this, 1093: ChartProgressEvent.DRAWING_STARTED, 0)); 1094: 1095: // record the chart area, if info is requested... 1096: if (info != null) { 1097: info.clear(); 1098: info.setChartArea(chartArea); 1099: } 1100: 1101: // ensure no drawing occurs outside chart area... 1102: Shape savedClip = g2.getClip(); 1103: g2.clip(chartArea); 1104: 1105: g2.addRenderingHints(this.renderingHints); 1106: 1107: // draw the chart background... 1108: if (this.backgroundPaint != null) { 1109: g2.setPaint(this.backgroundPaint); 1110: g2.fill(chartArea); 1111: } 1112: 1113: if (this.backgroundImage != null) { 1114: Composite originalComposite = g2.getComposite(); 1115: g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1116: this.backgroundImageAlpha)); 1117: Rectangle2D dest = new Rectangle2D.Double(0.0, 0.0, 1118: this.backgroundImage.getWidth(null), 1119: this.backgroundImage.getHeight(null)); 1120: Align.align(dest, chartArea, this.backgroundImageAlignment); 1121: g2.drawImage(this.backgroundImage, (int) dest.getX(), 1122: (int) dest.getY(), (int) dest.getWidth(), 1123: (int) dest.getHeight(), null); 1124: g2.setComposite(originalComposite); 1125: } 1126: 1127: if (isBorderVisible()) { 1128: Paint paint = getBorderPaint(); 1129: Stroke stroke = getBorderStroke(); 1130: if (paint != null && stroke != null) { 1131: Rectangle2D borderArea = new Rectangle2D.Double( 1132: chartArea.getX(), chartArea.getY(), 1133: chartArea.getWidth() - 1.0, chartArea.getHeight() 1134: - 1.0); 1135: g2.setPaint(paint); 1136: g2.setStroke(stroke); 1137: g2.draw(borderArea); 1138: } 1139: } 1140: 1141: // draw the title and subtitles... 1142: Rectangle2D nonTitleArea = new Rectangle2D.Double(); 1143: nonTitleArea.setRect(chartArea); 1144: this.padding.trim(nonTitleArea); 1145: 1146: EntityCollection entities = null; 1147: if (info != null) { 1148: entities = info.getEntityCollection(); 1149: } 1150: if (this.title != null) { 1151: EntityCollection e = drawTitle(this.title, g2, nonTitleArea, 1152: (entities != null)); 1153: if (e != null) { 1154: entities.addAll(e); 1155: } 1156: } 1157: 1158: Iterator iterator = this.subtitles.iterator(); 1159: while (iterator.hasNext()) { 1160: Title currentTitle = (Title) iterator.next(); 1161: EntityCollection e = drawTitle(currentTitle, g2, nonTitleArea, 1162: (entities != null)); 1163: if (e != null) { 1164: entities.addAll(e); 1165: } 1166: } 1167: 1168: Rectangle2D plotArea = nonTitleArea; 1169: 1170: // draw the plot (axes and data visualisation) 1171: PlotRenderingInfo plotInfo = null; 1172: if (info != null) { 1173: plotInfo = info.getPlotInfo(); 1174: } 1175: this.plot.draw(g2, plotArea, anchor, null, plotInfo); 1176: 1177: g2.setClip(savedClip); 1178: 1179: notifyListeners(new ChartProgressEvent(this, this, 1180: ChartProgressEvent.DRAWING_FINISHED, 100)); 1181: } 1182: 1183: /** 1184: * Creates a rectangle that is aligned to the frame. 1185: * 1186: * @param dimensions 1187: * @param frame 1188: * @param hAlign 1189: * @param vAlign 1190: * 1191: * @return A rectangle. 1192: */ 1193: private Rectangle2D createAlignedRectangle2D(Size2D dimensions, 1194: Rectangle2D frame, HorizontalAlignment hAlign, 1195: VerticalAlignment vAlign) { 1196: double x = Double.NaN; 1197: double y = Double.NaN; 1198: if (hAlign == HorizontalAlignment.LEFT) { 1199: x = frame.getX(); 1200: } 1201: else if (hAlign == HorizontalAlignment.CENTER) { 1202: x = frame.getCenterX() - (dimensions.width / 2.0); 1203: } 1204: else if (hAlign == HorizontalAlignment.RIGHT) { 1205: x = frame.getMaxX() - dimensions.width; 1206: } 1207: if (vAlign == VerticalAlignment.TOP) { 1208: y = frame.getY(); 1209: } 1210: else if (vAlign == VerticalAlignment.CENTER) { 1211: y = frame.getCenterY() - (dimensions.height / 2.0); 1212: } 1213: else if (vAlign == VerticalAlignment.BOTTOM) { 1214: y = frame.getMaxY() - dimensions.height; 1215: } 1216: 1217: return new Rectangle2D.Double(x, y, dimensions.width, 1218: dimensions.height); 1219: } 1220: 1221: /** 1222: * Draws a title. The title should be drawn at the top, bottom, left or 1223: * right of the specified area, and the area should be updated to reflect 1224: * the amount of space used by the title. 1225: * 1226: * @param t the title (<code>null</code> not permitted). 1227: * @param g2 the graphics device (<code>null</code> not permitted). 1228: * @param area the chart area, excluding any existing titles 1229: * (<code>null</code> not permitted). 1230: * @param entities a flag that controls whether or not an entity 1231: * collection is returned for the title. 1232: * 1233: * @return An entity collection for the title (possibly <code>null</code>). 1234: */ 1235: protected EntityCollection drawTitle(Title t, Graphics2D g2, 1236: Rectangle2D area, boolean entities) { 1237: 1238: if (t == null) { 1239: throw new IllegalArgumentException("Null 't' argument."); 1240: } 1241: if (area == null) { 1242: throw new IllegalArgumentException("Null 'area' argument."); 1243: } 1244: Rectangle2D titleArea = new Rectangle2D.Double(); 1245: RectangleEdge position = t.getPosition(); 1246: double ww = area.getWidth(); 1247: if (ww <= 0.0) { 1248: return null; 1249: } 1250: double hh = area.getHeight(); 1251: if (hh <= 0.0) { 1252: return null; 1253: } 1254: RectangleConstraint constraint = new RectangleConstraint(ww, 1255: new Range(0.0, ww), LengthConstraintType.RANGE, hh, 1256: new Range(0.0, hh), LengthConstraintType.RANGE); 1257: Object retValue = null; 1258: BlockParams p = new BlockParams(); 1259: p.setGenerateEntities(entities); 1260: if (position == RectangleEdge.TOP) { 1261: Size2D size = t.arrange(g2, constraint); 1262: titleArea = createAlignedRectangle2D(size, area, 1263: t.getHorizontalAlignment(), VerticalAlignment.TOP); 1264: retValue = t.draw(g2, titleArea, p); 1265: area.setRect(area.getX(), Math.min(area.getY() + size.height, 1266: area.getMaxY()), area.getWidth(), Math.max(area.getHeight() 1267: - size.height, 0)); 1268: } 1269: else if (position == RectangleEdge.BOTTOM) { 1270: Size2D size = t.arrange(g2, constraint); 1271: titleArea = createAlignedRectangle2D(size, area, 1272: t.getHorizontalAlignment(), VerticalAlignment.BOTTOM); 1273: retValue = t.draw(g2, titleArea, p); 1274: area.setRect(area.getX(), area.getY(), area.getWidth(), 1275: area.getHeight() - size.height); 1276: } 1277: else if (position == RectangleEdge.RIGHT) { 1278: Size2D size = t.arrange(g2, constraint); 1279: titleArea = createAlignedRectangle2D(size, area, 1280: HorizontalAlignment.RIGHT, t.getVerticalAlignment()); 1281: retValue = t.draw(g2, titleArea, p); 1282: area.setRect(area.getX(), area.getY(), area.getWidth() 1283: - size.width, area.getHeight()); 1284: } 1285: 1286: else if (position == RectangleEdge.LEFT) { 1287: Size2D size = t.arrange(g2, constraint); 1288: titleArea = createAlignedRectangle2D(size, area, 1289: HorizontalAlignment.LEFT, t.getVerticalAlignment()); 1290: retValue = t.draw(g2, titleArea, p); 1291: area.setRect(area.getX() + size.width, area.getY(), area.getWidth() 1292: - size.width, area.getHeight()); 1293: } 1294: else { 1295: throw new RuntimeException("Unrecognised title position."); 1296: } 1297: EntityCollection result = null; 1298: if (retValue instanceof EntityBlockResult) { 1299: EntityBlockResult ebr = (EntityBlockResult) retValue; 1300: result = ebr.getEntityCollection(); 1301: } 1302: return result; 1303: } 1304: 1305: /** 1306: * Creates and returns a buffered image into which the chart has been drawn. 1307: * 1308: * @param width the width. 1309: * @param height the height. 1310: * 1311: * @return A buffered image. 1312: */ 1313: public BufferedImage createBufferedImage(int width, int height) { 1314: return createBufferedImage(width, height, null); 1315: } 1316: 1317: /** 1318: * Creates and returns a buffered image into which the chart has been drawn. 1319: * 1320: * @param width the width. 1321: * @param height the height. 1322: * @param info carries back chart state information (<code>null</code> 1323: * permitted). 1324: * 1325: * @return A buffered image. 1326: */ 1327: public BufferedImage createBufferedImage(int width, int height, 1328: ChartRenderingInfo info) { 1329: return createBufferedImage(width, height, BufferedImage.TYPE_INT_RGB, 1330: info); 1331: } 1332: 1333: /** 1334: * Creates and returns a buffered image into which the chart has been drawn. 1335: * 1336: * @param width the width. 1337: * @param height the height. 1338: * @param imageType the image type. 1339: * @param info carries back chart state information (<code>null</code> 1340: * permitted). 1341: * 1342: * @return A buffered image. 1343: */ 1344: public BufferedImage createBufferedImage(int width, int height, 1345: int imageType, 1346: ChartRenderingInfo info) { 1347: BufferedImage image = new BufferedImage(width, height, imageType); 1348: Graphics2D g2 = image.createGraphics(); 1349: draw(g2, new Rectangle2D.Double(0, 0, width, height), null, info); 1350: g2.dispose(); 1351: return image; 1352: } 1353: 1354: /** 1355: * Creates and returns a buffered image into which the chart has been drawn. 1356: * 1357: * @param imageWidth the image width. 1358: * @param imageHeight the image height. 1359: * @param drawWidth the width for drawing the chart (will be scaled to 1360: * fit image). 1361: * @param drawHeight the height for drawing the chart (will be scaled to 1362: * fit image). 1363: * @param info optional object for collection chart dimension and entity 1364: * information. 1365: * 1366: * @return A buffered image. 1367: */ 1368: public BufferedImage createBufferedImage(int imageWidth, 1369: int imageHeight, 1370: double drawWidth, 1371: double drawHeight, 1372: ChartRenderingInfo info) { 1373: 1374: BufferedImage image = new BufferedImage(imageWidth, imageHeight, 1375: BufferedImage.TYPE_INT_RGB); 1376: Graphics2D g2 = image.createGraphics(); 1377: double scaleX = imageWidth / drawWidth; 1378: double scaleY = imageHeight / drawHeight; 1379: AffineTransform st = AffineTransform.getScaleInstance(scaleX, scaleY); 1380: g2.transform(st); 1381: draw(g2, new Rectangle2D.Double(0, 0, drawWidth, drawHeight), null, 1382: info); 1383: g2.dispose(); 1384: return image; 1385: 1386: } 1387: 1388: /** 1389: * Handles a 'click' on the chart. 1390: * <P> 1391: * JFreeChart is not a UI component, so some other object (e.g. ChartPanel) 1392: * needs to capture the click event and pass it onto the JFreeChart object. 1393: * If you are not using JFreeChart in a client application, then this 1394: * method is not required (and hopefully it doesn't get in the way). 1395: * 1396: * @param x x-coordinate of the click (in Java2D space). 1397: * @param y y-coordinate of the click (in Java2D space). 1398: * @param info contains chart dimension and entity information. 1399: */ 1400: public void handleClick(int x, int y, ChartRenderingInfo info) { 1401: 1402: // pass the click on to the plot... 1403: // rely on the plot to post a plot change event and redraw the chart... 1404: this.plot.handleClick(x, y, info.getPlotInfo()); 1405: 1406: } 1407: 1408: /** 1409: * Registers an object for notification of changes to the chart. 1410: * 1411: * @param listener the listener (<code>null</code> not permitted). 1412: * 1413: * @see #removeChangeListener(ChartChangeListener) 1414: */ 1415: public void addChangeListener(ChartChangeListener listener) { 1416: if (listener == null) { 1417: throw new IllegalArgumentException("Null 'listener' argument."); 1418: } 1419: this.changeListeners.add(ChartChangeListener.class, listener); 1420: } 1421: 1422: /** 1423: * Deregisters an object for notification of changes to the chart. 1424: * 1425: * @param listener the listener (<code>null</code> not permitted) 1426: * 1427: * @see #addChangeListener(ChartChangeListener) 1428: */ 1429: public void removeChangeListener(ChartChangeListener listener) { 1430: if (listener == null) { 1431: throw new IllegalArgumentException("Null 'listener' argument."); 1432: } 1433: this.changeListeners.remove(ChartChangeListener.class, listener); 1434: } 1435: 1436: /** 1437: * Sends a default {@link ChartChangeEvent} to all registered listeners. 1438: * <P> 1439: * This method is for convenience only. 1440: */ 1441: public void fireChartChanged() { 1442: ChartChangeEvent event = new ChartChangeEvent(this); 1443: notifyListeners(event); 1444: } 1445: 1446: /** 1447: * Sends a {@link ChartChangeEvent} to all registered listeners. 1448: * 1449: * @param event information about the event that triggered the 1450: * notification. 1451: */ 1452: protected void notifyListeners(ChartChangeEvent event) { 1453: if (this.notify) { 1454: Object[] listeners = this.changeListeners.getListenerList(); 1455: for (int i = listeners.length - 2; i >= 0; i -= 2) { 1456: if (listeners[i] == ChartChangeListener.class) { 1457: ((ChartChangeListener) listeners[i + 1]).chartChanged( 1458: event); 1459: } 1460: } 1461: } 1462: } 1463: 1464: /** 1465: * Registers an object for notification of progress events relating to the 1466: * chart. 1467: * 1468: * @param listener the object being registered. 1469: * 1470: * @see #removeProgressListener(ChartProgressListener) 1471: */ 1472: public void addProgressListener(ChartProgressListener listener) { 1473: this.progressListeners.add(ChartProgressListener.class, listener); 1474: } 1475: 1476: /** 1477: * Deregisters an object for notification of changes to the chart. 1478: * 1479: * @param listener the object being deregistered. 1480: * 1481: * @see #addProgressListener(ChartProgressListener) 1482: */ 1483: public void removeProgressListener(ChartProgressListener listener) { 1484: this.progressListeners.remove(ChartProgressListener.class, listener); 1485: } 1486: 1487: /** 1488: * Sends a {@link ChartProgressEvent} to all registered listeners. 1489: * 1490: * @param event information about the event that triggered the 1491: * notification. 1492: */ 1493: protected void notifyListeners(ChartProgressEvent event) { 1494: 1495: Object[] listeners = this.progressListeners.getListenerList(); 1496: for (int i = listeners.length - 2; i >= 0; i -= 2) { 1497: if (listeners[i] == ChartProgressListener.class) { 1498: ((ChartProgressListener) listeners[i + 1]).chartProgress(event); 1499: } 1500: } 1501: 1502: } 1503: 1504: /** 1505: * Receives notification that a chart title has changed, and passes this 1506: * on to registered listeners. 1507: * 1508: * @param event information about the chart title change. 1509: */ 1510: public void titleChanged(TitleChangeEvent event) { 1511: event.setChart(this); 1512: notifyListeners(event); 1513: } 1514: 1515: /** 1516: * Receives notification that the plot has changed, and passes this on to 1517: * registered listeners. 1518: * 1519: * @param event information about the plot change. 1520: */ 1521: public void plotChanged(PlotChangeEvent event) { 1522: event.setChart(this); 1523: notifyListeners(event); 1524: } 1525: 1526: /** 1527: * Tests this chart for equality with another object. 1528: * 1529: * @param obj the object (<code>null</code> permitted). 1530: * 1531: * @return A boolean. 1532: */ 1533: public boolean equals(Object obj) { 1534: if (obj == this) { 1535: return true; 1536: } 1537: if (!(obj instanceof JFreeChart)) { 1538: return false; 1539: } 1540: JFreeChart that = (JFreeChart) obj; 1541: if (!this.renderingHints.equals(that.renderingHints)) { 1542: return false; 1543: } 1544: if (this.borderVisible != that.borderVisible) { 1545: return false; 1546: } 1547: if (!ObjectUtilities.equal(this.borderStroke, that.borderStroke)) { 1548: return false; 1549: } 1550: if (!PaintUtilities.equal(this.borderPaint, that.borderPaint)) { 1551: return false; 1552: } 1553: if (!this.padding.equals(that.padding)) { 1554: return false; 1555: } 1556: if (!ObjectUtilities.equal(this.title, that.title)) { 1557: return false; 1558: } 1559: if (!ObjectUtilities.equal(this.subtitles, that.subtitles)) { 1560: return false; 1561: } 1562: if (!ObjectUtilities.equal(this.plot, that.plot)) { 1563: return false; 1564: } 1565: if (!PaintUtilities.equal( 1566: this.backgroundPaint, that.backgroundPaint 1567: )) { 1568: return false; 1569: } 1570: if (!ObjectUtilities.equal(this.backgroundImage, 1571: that.backgroundImage)) { 1572: return false; 1573: } 1574: if (this.backgroundImageAlignment != that.backgroundImageAlignment) { 1575: return false; 1576: } 1577: if (this.backgroundImageAlpha != that.backgroundImageAlpha) { 1578: return false; 1579: } 1580: if (this.notify != that.notify) { 1581: return false; 1582: } 1583: return true; 1584: } 1585: 1586: /** 1587: * Provides serialization support. 1588: * 1589: * @param stream the output stream. 1590: * 1591: * @throws IOException if there is an I/O error. 1592: */ 1593: private void writeObject(ObjectOutputStream stream) throws IOException { 1594: stream.defaultWriteObject(); 1595: SerialUtilities.writeStroke(this.borderStroke, stream); 1596: SerialUtilities.writePaint(this.borderPaint, stream); 1597: SerialUtilities.writePaint(this.backgroundPaint, stream); 1598: } 1599: 1600: /** 1601: * Provides serialization support. 1602: * 1603: * @param stream the input stream. 1604: * 1605: * @throws IOException if there is an I/O error. 1606: * @throws ClassNotFoundException if there is a classpath problem. 1607: */ 1608: private void readObject(ObjectInputStream stream) 1609: throws IOException, ClassNotFoundException { 1610: stream.defaultReadObject(); 1611: this.borderStroke = SerialUtilities.readStroke(stream); 1612: this.borderPaint = SerialUtilities.readPaint(stream); 1613: this.backgroundPaint = SerialUtilities.readPaint(stream); 1614: this.progressListeners = new EventListenerList(); 1615: this.changeListeners = new EventListenerList(); 1616: this.renderingHints = new RenderingHints( 1617: RenderingHints.KEY_ANTIALIASING, 1618: RenderingHints.VALUE_ANTIALIAS_ON); 1619: 1620: // register as a listener with sub-components... 1621: if (this.title != null) { 1622: this.title.addChangeListener(this); 1623: } 1624: 1625: for (int i = 0; i < getSubtitleCount(); i++) { 1626: getSubtitle(i).addChangeListener(this); 1627: } 1628: this.plot.addChangeListener(this); 1629: } 1630: 1631: /** 1632: * Prints information about JFreeChart to standard output. 1633: * 1634: * @param args no arguments are honored. 1635: */ 1636: public static void main(String[] args) { 1637: System.out.println(JFreeChart.INFO.toString()); 1638: } 1639: 1640: /** 1641: * Clones the object, and takes care of listeners. 1642: * Note: caller shall register its own listeners on cloned graph. 1643: * 1644: * @return A clone. 1645: * 1646: * @throws CloneNotSupportedException if the chart is not cloneable. 1647: */ 1648: public Object clone() throws CloneNotSupportedException { 1649: JFreeChart chart = (JFreeChart) super.clone(); 1650: 1651: chart.renderingHints = (RenderingHints) this.renderingHints.clone(); 1652: // private boolean borderVisible; 1653: // private transient Stroke borderStroke; 1654: // private transient Paint borderPaint; 1655: 1656: if (this.title != null) { 1657: chart.title = (TextTitle) this.title.clone(); 1658: chart.title.addChangeListener(chart); 1659: } 1660: 1661: chart.subtitles = new ArrayList(); 1662: for (int i = 0; i < getSubtitleCount(); i++) { 1663: Title subtitle = (Title) getSubtitle(i).clone(); 1664: chart.subtitles.add(subtitle); 1665: subtitle.addChangeListener(chart); 1666: } 1667: 1668: if (this.plot != null) { 1669: chart.plot = (Plot) this.plot.clone(); 1670: chart.plot.addChangeListener(chart); 1671: } 1672: 1673: chart.progressListeners = new EventListenerList(); 1674: chart.changeListeners = new EventListenerList(); 1675: return chart; 1676: } 1677: 1678: } 1679: 1680: /** 1681: * Information about the JFreeChart project. One instance of this class is 1682: * assigned to <code>JFreeChart.INFO<code>. 1683: */ 1684: class JFreeChartInfo extends ProjectInfo { 1685: 1686: /** 1687: * Default constructor. 1688: */ 1689: public JFreeChartInfo() { 1690: 1691: // get a locale-specific resource bundle... 1692: String baseResourceClass 1693: = "org.jfree.chart.resources.JFreeChartResources"; 1694: ResourceBundle resources = ResourceBundle.getBundle(baseResourceClass); 1695: 1696: setName(resources.getString("project.name")); 1697: setVersion(resources.getString("project.version")); 1698: setInfo(resources.getString("project.info")); 1699: setCopyright(resources.getString("project.copyright")); 1700: setLogo(null); // load only when required 1701: setLicenceName("LGPL"); 1702: setLicenceText(Licences.getInstance().getLGPL()); 1703: 1704: setContributors(Arrays.asList( 1705: new Contributor[]{ 1706: new Contributor("Eric Alexander", "-"), 1707: new Contributor( 1708: "Richard Atkinson", "richard_c_atkinson@ntlworld.com" 1709: ), 1710: new Contributor("David Basten", "-"), 1711: new Contributor("David Berry", "-"), 1712: new Contributor("Anthony Boulestreau", "-"), 1713: new Contributor("Jeremy Bowman", "-"), 1714: new Contributor("Nicolas Brodu", "-"), 1715: new Contributor("David Browning", "-"), 1716: new Contributor("Soren Caspersen", "-"), 1717: new Contributor("Chuanhao Chiu", "-"), 1718: new Contributor("Brian Cole", "-"), 1719: new Contributor("Pascal Collet", "-"), 1720: new Contributor("Martin Cordova", "-"), 1721: new Contributor("Paolo Cova", "-"), 1722: new Contributor("Mike Duffy", "-"), 1723: new Contributor("Don Elliott", "-"), 1724: new Contributor("Jonathan Gabbai", "-"), 1725: new Contributor("David Gilbert", 1726: "david.gilbert@object-refinery.com"), 1727: new Contributor("Serge V. Grachov", "-"), 1728: new Contributor("Daniel Gredler", "-"), 1729: new Contributor("Hans-Jurgen Greiner", "-"), 1730: new Contributor("Joao Guilherme Del Valle", "-"), 1731: new Contributor("Aiman Han", "-"), 1732: new Contributor("Cameron Hayne", "-"), 1733: new Contributor("Jon Iles", "-"), 1734: new Contributor("Wolfgang Irler", "-"), 1735: new Contributor("Sergei Ivanov", "-"), 1736: new Contributor("Adriaan Joubert", "-"), 1737: new Contributor("Darren Jung", "-"), 1738: new Contributor("Xun Kang", "-"), 1739: new Contributor("Bill Kelemen", "-"), 1740: new Contributor("Norbert Kiesel", "-"), 1741: new Contributor("Gideon Krause", "-"), 1742: new Contributor("Pierre-Marie Le Biot", "-"), 1743: new Contributor("Arnaud Lelievre", "-"), 1744: new Contributor("Wolfgang Lenhard", "-"), 1745: new Contributor("David Li", "-"), 1746: new Contributor("Yan Liu", "-"), 1747: new Contributor("Tin Luu", "-"), 1748: new Contributor("Craig MacFarlane", "-"), 1749: new Contributor("Achilleus Mantzios", "-"), 1750: new Contributor("Thomas Meier", "-"), 1751: new Contributor("Jim Moore", "-"), 1752: new Contributor("Jonathan Nash", "-"), 1753: new Contributor("Barak Naveh", "-"), 1754: new Contributor("David M. O'Donnell", "-"), 1755: new Contributor("Krzysztof Paz", "-"), 1756: new Contributor("Tomer Peretz", "-"), 1757: new Contributor("Andrzej Porebski", "-"), 1758: new Contributor("Xavier Poinsard", "-"), 1759: new Contributor("Viktor Rajewski", "-"), 1760: new Contributor("Eduardo Ramalho", "-"), 1761: new Contributor("Michael Rauch", "-"), 1762: new Contributor("Cameron Riley", "-"), 1763: new Contributor("Klaus Rheinwald", "-"), 1764: new Contributor("Dan Rivett", "d.rivett@ukonline.co.uk"), 1765: new Contributor("Scott Sams", "-"), 1766: new Contributor("Michel Santos", "-"), 1767: new Contributor("Thierry Saura", "-"), 1768: new Contributor("Andreas Schneider", "-"), 1769: new Contributor("Jean-Luc SCHWAB", "-"), 1770: new Contributor("Bryan Scott", "-"), 1771: new Contributor("Tobias Selb", "-"), 1772: new Contributor("Mofeed Shahin", "-"), 1773: new Contributor("Pady Srinivasan", "-"), 1774: new Contributor("Greg Steckman", "-"), 1775: new Contributor("Roger Studner", "-"), 1776: new Contributor("Irv Thomae", "-"), 1777: new Contributor("Eric Thomas", "-"), 1778: new Contributor("Rich Unger", "-"), 1779: new Contributor("Daniel van Enckevort", "-"), 1780: new Contributor("Laurence Vanhelsuwe", "-"), 1781: new Contributor("Sylvain Vieujot", "-"), 1782: new Contributor("Mark Watson", "www.markwatson.com"), 1783: new Contributor("Alex Weber", "-"), 1784: new Contributor("Matthew Wright", "-"), 1785: new Contributor("Benoit Xhenseval", "-"), 1786: new Contributor("Christian W. Zuckschwerdt", 1787: "Christian.Zuckschwerdt@Informatik.Uni-Oldenburg.de"), 1788: new Contributor("Hari", "-"), 1789: new Contributor("Sam (oldman)", "-"), 1790: } 1791: )); 1792: 1793: addLibrary(JCommon.INFO); 1794: 1795: } 1796: 1797: /** 1798: * Returns the JFreeChart logo (a picture of a gorilla). 1799: * 1800: * @return The JFreeChart logo. 1801: */ 1802: public Image getLogo() { 1803: 1804: Image logo = super.getLogo(); 1805: if (logo == null) { 1806: URL imageURL = this.getClass().getClassLoader().getResource( 1807: "org/jfree/chart/gorilla.jpg"); 1808: if (imageURL != null) { 1809: ImageIcon temp = new ImageIcon(imageURL); 1810: // use ImageIcon because it waits for the image to load... 1811: logo = temp.getImage(); 1812: setLogo(logo); 1813: } 1814: } 1815: return logo; 1816: 1817: } 1818: 1819: } Overview Package Class Use Source Tree Index Deprecated About
posted on 2013-05-31 05:39 Step-BY-Step 阅读(440) 评论(0) 编辑 收藏 举报
