Frames | No Frames |
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: * CandlestickRenderer.java 29: * ------------------------ 30: * (C) Copyright 2001-2007, by Object Refinery Limited. 31: * 32: * Original Authors: David Gilbert (for Object Refinery Limited); 33: * Sylvain Vieujot; 34: * Contributor(s): Richard Atkinson; 35: * Christian W. Zuckschwerdt; 36: * Jerome Fisher; 37: * 38: * Changes 39: * ------- 40: * 13-Dec-2001 : Version 1. Based on code in the (now redundant) 41: * CandlestickPlot class, written by Sylvain Vieujot (DG); 42: * 23-Jan-2002 : Added DrawInfo parameter to drawItem() method (DG); 43: * 28-Mar-2002 : Added a property change listener mechanism so that renderers 44: * no longer need to be immutable. Added properties for up and 45: * down colors (DG); 46: * 04-Apr-2002 : Updated with new automatic width calculation and optional 47: * volume display, contributed by Sylvain Vieujot (DG); 48: * 09-Apr-2002 : Removed translatedRangeZero from the drawItem() method, and 49: * changed the return type of the drawItem method to void, 50: * reflecting a change in the XYItemRenderer interface. Added 51: * tooltip code to drawItem() method (DG); 52: * 25-Jun-2002 : Removed redundant code (DG); 53: * 05-Aug-2002 : Small modification to drawItem method to support URLs for HTML 54: * image maps (RA); 55: * 19-Sep-2002 : Fixed errors reported by Checkstyle (DG); 56: * 25-Mar-2003 : Implemented Serializable (DG); 57: * 01-May-2003 : Modified drawItem() method signature (DG); 58: * 30-Jun-2003 : Added support for PlotOrientation (for completeness, this 59: * renderer is unlikely to be used with a HORIZONTAL 60: * orientation) (DG); 61: * 30-Jul-2003 : Modified entity constructor (CZ); 62: * 20-Aug-2003 : Implemented Cloneable and PublicCloneable (DG); 63: * 29-Aug-2003 : Moved maxVolume calculation to initialise method (see bug 64: * report 796619) (DG); 65: * 02-Sep-2003 : Added maxCandleWidthInMilliseconds as workaround for bug 66: * 796621 (DG); 67: * 08-Sep-2003 : Changed ValueAxis API (DG); 68: * 16-Sep-2003 : Changed ChartRenderingInfo --> PlotRenderingInfo (DG); 69: * 13-Oct-2003 : Applied patch from Jerome Fisher to improve auto width 70: * calculations (DG); 71: * 23-Dec-2003 : Fixed bug where up and down paint are used incorrectly (DG); 72: * 25-Feb-2004 : Replaced CrosshairInfo with CrosshairState (DG); 73: * 15-Jul-2004 : Switched getX() with getXValue() and getY() with 74: * getYValue() (DG); 75: * ------------- JFREECHART 1.0.x --------------------------------------------- 76: * 06-Jul-2006 : Swapped calls to getX() --> getXValue(), and the same for the 77: * other data values (DG); 78: * 17-Aug-2006 : Corrections to the equals() method (DG); 79: * 05-Mar-2007 : Added flag to allow optional use of outline paint (DG); 80: * 08-Oct-2007 : Added new volumePaint field (DG); 81: * 82: */ 83: 84: package org.jfree.chart.renderer.xy; 85: 86: import java.awt.AlphaComposite; 87: import java.awt.Color; 88: import java.awt.Composite; 89: import java.awt.Graphics2D; 90: import java.awt.Paint; 91: import java.awt.Shape; 92: import java.awt.Stroke; 93: import java.awt.geom.Line2D; 94: import java.awt.geom.Rectangle2D; 95: import java.io.IOException; 96: import java.io.ObjectInputStream; 97: import java.io.ObjectOutputStream; 98: import java.io.Serializable; 99: 100: import org.jfree.chart.axis.ValueAxis; 101: import org.jfree.chart.entity.EntityCollection; 102: import org.jfree.chart.entity.XYItemEntity; 103: import org.jfree.chart.event.RendererChangeEvent; 104: import org.jfree.chart.labels.HighLowItemLabelGenerator; 105: import org.jfree.chart.labels.XYToolTipGenerator; 106: import org.jfree.chart.plot.CrosshairState; 107: import org.jfree.chart.plot.PlotOrientation; 108: import org.jfree.chart.plot.PlotRenderingInfo; 109: import org.jfree.chart.plot.XYPlot; 110: import org.jfree.data.xy.IntervalXYDataset; 111: import org.jfree.data.xy.OHLCDataset; 112: import org.jfree.data.xy.XYDataset; 113: import org.jfree.io.SerialUtilities; 114: import org.jfree.ui.RectangleEdge; 115: import org.jfree.util.PaintUtilities; 116: import org.jfree.util.PublicCloneable; 117: 118: /** 119: * A renderer that draws candlesticks on an {@link XYPlot} (requires a 120: * {@link OHLCDataset}). 121: * <P> 122: * This renderer does not include code to calculate the crosshair point for the 123: * plot. 124: */ 125: public class CandlestickRenderer extends AbstractXYItemRenderer 126: implements XYItemRenderer, 127: Cloneable, 128: PublicCloneable, 129: Serializable { 130: 131: /** For serialization. */ 132: private static final long serialVersionUID = 50390395841817121L; 133: 134: /** The average width method. */ 135: public static final int WIDTHMETHOD_AVERAGE = 0; 136: 137: /** The smallest width method. */ 138: public static final int WIDTHMETHOD_SMALLEST = 1; 139: 140: /** The interval data method. */ 141: public static final int WIDTHMETHOD_INTERVALDATA = 2; 142: 143: /** The method of automatically calculating the candle width. */ 144: private int autoWidthMethod = WIDTHMETHOD_AVERAGE; 145: 146: /** 147: * The number (generally between 0.0 and 1.0) by which the available space 148: * automatically calculated for the candles will be multiplied to determine 149: * the actual width to use. 150: */ 151: private double autoWidthFactor = 4.5 / 7; 152: 153: /** The minimum gap between one candle and the next */ 154: private double autoWidthGap = 0.0; 155: 156: /** The candle width. */ 157: private double candleWidth; 158: 159: /** The maximum candlewidth in milliseconds. */ 160: private double maxCandleWidthInMilliseconds = 1000.0 * 60.0 * 60.0 * 20.0; 161: 162: /** Temporary storage for the maximum candle width. */ 163: private double maxCandleWidth; 164: 165: /** 166: * The paint used to fill the candle when the price moved up from open to 167: * close. 168: */ 169: private transient Paint upPaint; 170: 171: /** 172: * The paint used to fill the candle when the price moved down from open 173: * to close. 174: */ 175: private transient Paint downPaint; 176: 177: /** A flag controlling whether or not volume bars are drawn on the chart. */ 178: private boolean drawVolume; 179: 180: /** 181: * The paint used to fill the volume bars (if they are visible). Once 182: * initialised, this field should never be set to <code>null</code>. 183: * 184: * @since 1.0.7 185: */ 186: private transient Paint volumePaint; 187: 188: /** Temporary storage for the maximum volume. */ 189: private transient double maxVolume; 190: 191: /** 192: * A flag that controls whether or not the renderer's outline paint is 193: * used to draw the outline of the candlestick. The default value is 194: * <code>false</code> to avoid a change of behaviour for existing code. 195: * 196: * @since 1.0.5 197: */ 198: private boolean useOutlinePaint; 199: 200: /** 201: * Creates a new renderer for candlestick charts. 202: */ 203: public CandlestickRenderer() { 204: this(-1.0); 205: } 206: 207: /** 208: * Creates a new renderer for candlestick charts. 209: * <P> 210: * Use -1 for the candle width if you prefer the width to be calculated 211: * automatically. 212: * 213: * @param candleWidth The candle width. 214: */ 215: public CandlestickRenderer(double candleWidth) { 216: this(candleWidth, true, new HighLowItemLabelGenerator()); 217: } 218: 219: /** 220: * Creates a new renderer for candlestick charts. 221: * <P> 222: * Use -1 for the candle width if you prefer the width to be calculated 223: * automatically. 224: * 225: * @param candleWidth the candle width. 226: * @param drawVolume a flag indicating whether or not volume bars should 227: * be drawn. 228: * @param toolTipGenerator the tool tip generator. <code>null</code> is 229: * none. 230: */ 231: public CandlestickRenderer(double candleWidth, boolean drawVolume, 232: XYToolTipGenerator toolTipGenerator) { 233: super(); 234: setBaseToolTipGenerator(toolTipGenerator); 235: this.candleWidth = candleWidth; 236: this.drawVolume = drawVolume; 237: this.volumePaint = Color.gray; 238: this.upPaint = Color.green; 239: this.downPaint = Color.red; 240: this.useOutlinePaint = false; // false preserves the old behaviour 241: // prior to introducing this flag 242: } 243: 244: /** 245: * Returns the width of each candle. 246: * 247: * @return The candle width. 248: * 249: * @see #setCandleWidth(double) 250: */ 251: public double getCandleWidth() { 252: return this.candleWidth; 253: } 254: 255: /** 256: * Sets the candle width and sends a {@link RendererChangeEvent} to all 257: * registered listeners. 258: * <P> 259: * If you set the width to a negative value, the renderer will calculate 260: * the candle width automatically based on the space available on the chart. 261: * 262: * @param width The width. 263: * @see #setAutoWidthMethod(int) 264: * @see #setAutoWidthGap(double) 265: * @see #setAutoWidthFactor(double) 266: * @see #setMaxCandleWidthInMilliseconds(double) 267: */ 268: public void setCandleWidth(double width) { 269: if (width != this.candleWidth) { 270: this.candleWidth = width; 271: fireChangeEvent(); 272: } 273: } 274: 275: /** 276: * Returns the maximum width (in milliseconds) of each candle. 277: * 278: * @return The maximum candle width in milliseconds. 279: * 280: * @see #setMaxCandleWidthInMilliseconds(double) 281: */ 282: public double getMaxCandleWidthInMilliseconds() { 283: return this.maxCandleWidthInMilliseconds; 284: } 285: 286: /** 287: * Sets the maximum candle width (in milliseconds) and sends a 288: * {@link RendererChangeEvent} to all registered listeners. 289: * 290: * @param millis The maximum width. 291: * 292: * @see #getMaxCandleWidthInMilliseconds() 293: * @see #setCandleWidth(double) 294: * @see #setAutoWidthMethod(int) 295: * @see #setAutoWidthGap(double) 296: * @see #setAutoWidthFactor(double) 297: */ 298: public void setMaxCandleWidthInMilliseconds(double millis) { 299: this.maxCandleWidthInMilliseconds = millis; 300: fireChangeEvent(); 301: } 302: 303: /** 304: * Returns the method of automatically calculating the candle width. 305: * 306: * @return The method of automatically calculating the candle width. 307: * 308: * @see #setAutoWidthMethod(int) 309: */ 310: public int getAutoWidthMethod() { 311: return this.autoWidthMethod; 312: } 313: 314: /** 315: * Sets the method of automatically calculating the candle width and 316: * sends a {@link RendererChangeEvent} to all registered listeners. 317: * <p> 318: * <code>WIDTHMETHOD_AVERAGE</code>: Divides the entire display (ignoring 319: * scale factor) by the number of items, and uses this as the available 320: * width.<br> 321: * <code>WIDTHMETHOD_SMALLEST</code>: Checks the interval between each 322: * item, and uses the smallest as the available width.<br> 323: * <code>WIDTHMETHOD_INTERVALDATA</code>: Assumes that the dataset supports 324: * the IntervalXYDataset interface, and uses the startXValue - endXValue as 325: * the available width. 326: * <br> 327: * 328: * @param autoWidthMethod The method of automatically calculating the 329: * candle width. 330: * 331: * @see #WIDTHMETHOD_AVERAGE 332: * @see #WIDTHMETHOD_SMALLEST 333: * @see #WIDTHMETHOD_INTERVALDATA 334: * @see #getAutoWidthMethod() 335: * @see #setCandleWidth(double) 336: * @see #setAutoWidthGap(double) 337: * @see #setAutoWidthFactor(double) 338: * @see #setMaxCandleWidthInMilliseconds(double) 339: */ 340: public void setAutoWidthMethod(int autoWidthMethod) { 341: if (this.autoWidthMethod != autoWidthMethod) { 342: this.autoWidthMethod = autoWidthMethod; 343: fireChangeEvent(); 344: } 345: } 346: 347: /** 348: * Returns the factor by which the available space automatically 349: * calculated for the candles will be multiplied to determine the actual 350: * width to use. 351: * 352: * @return The width factor (generally between 0.0 and 1.0). 353: * 354: * @see #setAutoWidthFactor(double) 355: */ 356: public double getAutoWidthFactor() { 357: return this.autoWidthFactor; 358: } 359: 360: /** 361: * Sets the factor by which the available space automatically calculated 362: * for the candles will be multiplied to determine the actual width to use. 363: * 364: * @param autoWidthFactor The width factor (generally between 0.0 and 1.0). 365: * 366: * @see #getAutoWidthFactor() 367: * @see #setCandleWidth(double) 368: * @see #setAutoWidthMethod(int) 369: * @see #setAutoWidthGap(double) 370: * @see #setMaxCandleWidthInMilliseconds(double) 371: */ 372: public void setAutoWidthFactor(double autoWidthFactor) { 373: if (this.autoWidthFactor != autoWidthFactor) { 374: this.autoWidthFactor = autoWidthFactor; 375: fireChangeEvent(); 376: } 377: } 378: 379: /** 380: * Returns the amount of space to leave on the left and right of each 381: * candle when automatically calculating widths. 382: * 383: * @return The gap. 384: * 385: * @see #setAutoWidthGap(double) 386: */ 387: public double getAutoWidthGap() { 388: return this.autoWidthGap; 389: } 390: 391: /** 392: * Sets the amount of space to leave on the left and right of each candle 393: * when automatically calculating widths and sends a 394: * {@link RendererChangeEvent} to all registered listeners. 395: * 396: * @param autoWidthGap The gap. 397: * 398: * @see #getAutoWidthGap() 399: * @see #setCandleWidth(double) 400: * @see #setAutoWidthMethod(int) 401: * @see #setAutoWidthFactor(double) 402: * @see #setMaxCandleWidthInMilliseconds(double) 403: */ 404: public void setAutoWidthGap(double autoWidthGap) { 405: if (this.autoWidthGap != autoWidthGap) { 406: this.autoWidthGap = autoWidthGap; 407: fireChangeEvent(); 408: } 409: } 410: 411: /** 412: * Returns the paint used to fill candles when the price moves up from open 413: * to close. 414: * 415: * @return The paint (possibly <code>null</code>). 416: * 417: * @see #setUpPaint(Paint) 418: */ 419: public Paint getUpPaint() { 420: return this.upPaint; 421: } 422: 423: /** 424: * Sets the paint used to fill candles when the price moves up from open 425: * to close and sends a {@link RendererChangeEvent} to all registered 426: * listeners. 427: * 428: * @param paint the paint (<code>null</code> permitted). 429: * 430: * @see #getUpPaint() 431: */ 432: public void setUpPaint(Paint paint) { 433: this.upPaint = paint; 434: fireChangeEvent(); 435: } 436: 437: /** 438: * Returns the paint used to fill candles when the price moves down from 439: * open to close. 440: * 441: * @return The paint (possibly <code>null</code>). 442: * 443: * @see #setDownPaint(Paint) 444: */ 445: public Paint getDownPaint() { 446: return this.downPaint; 447: } 448: 449: /** 450: * Sets the paint used to fill candles when the price moves down from open 451: * to close and sends a {@link RendererChangeEvent} to all registered 452: * listeners. 453: * 454: * @param paint The paint (<code>null</code> permitted). 455: */ 456: public void setDownPaint(Paint paint) { 457: this.downPaint = paint; 458: fireChangeEvent(); 459: } 460: 461: /** 462: * Returns a flag indicating whether or not volume bars are drawn on the 463: * chart. 464: * 465: * @return A boolean. 466: * 467: * @since 1.0.5 468: * 469: * @see #setDrawVolume(boolean) 470: */ 471: public boolean getDrawVolume() { 472: return this.drawVolume; 473: } 474: 475: /** 476: * Sets a flag that controls whether or not volume bars are drawn in the 477: * background and sends a {@link RendererChangeEvent} to all registered 478: * listeners. 479: * 480: * @param flag the flag. 481: * 482: * @see #getDrawVolume() 483: */ 484: public void setDrawVolume(boolean flag) { 485: if (this.drawVolume != flag) { 486: this.drawVolume = flag; 487: fireChangeEvent(); 488: } 489: } 490: 491: /** 492: * Returns the paint that is used to fill the volume bars if they are 493: * visible. 494: * 495: * @return The paint (never <code>null</code>). 496: * 497: * @see #setVolumePaint(Paint) 498: * 499: * @since 1.0.7 500: */ 501: public Paint getVolumePaint() { 502: return this.volumePaint; 503: } 504: 505: /** 506: * Sets the paint used to fill the volume bars, and sends a 507: * {@link RendererChangeEvent} to all registered listeners. 508: * 509: * @param paint the paint (<code>null</code> not permitted). 510: * 511: * @see #getVolumePaint() 512: * @see #getDrawVolume() 513: * 514: * @since 1.0.7 515: */ 516: public void setVolumePaint(Paint paint) { 517: if (paint == null) { 518: throw new IllegalArgumentException("Null 'paint' argument."); 519: } 520: this.volumePaint = paint; 521: fireChangeEvent(); 522: } 523: 524: /** 525: * Returns the flag that controls whether or not the renderer's outline 526: * paint is used to draw the candlestick outline. The default value is 527: * <code>false</code>. 528: * 529: * @return A boolean. 530: * 531: * @since 1.0.5 532: * 533: * @see #setUseOutlinePaint(boolean) 534: */ 535: public boolean getUseOutlinePaint() { 536: return this.useOutlinePaint; 537: } 538: 539: /** 540: * Sets the flag that controls whether or not the renderer's outline 541: * paint is used to draw the candlestick outline, and sends a 542: * {@link RendererChangeEvent} to all registered listeners. 543: * 544: * @param use the new flag value. 545: * 546: * @since 1.0.5 547: * 548: * @see #getUseOutlinePaint() 549: */ 550: public void setUseOutlinePaint(boolean use) { 551: if (this.useOutlinePaint != use) { 552: this.useOutlinePaint = use; 553: fireChangeEvent(); 554: } 555: } 556: 557: /** 558: * Initialises the renderer then returns the number of 'passes' through the 559: * data that the renderer will require (usually just one). This method 560: * will be called before the first item is rendered, giving the renderer 561: * an opportunity to initialise any state information it wants to maintain. 562: * The renderer can do nothing if it chooses. 563: * 564: * @param g2 the graphics device. 565: * @param dataArea the area inside the axes. 566: * @param plot the plot. 567: * @param dataset the data. 568: * @param info an optional info collection object to return data back to 569: * the caller. 570: * 571: * @return The number of passes the renderer requires. 572: */ 573: public XYItemRendererState initialise(Graphics2D g2, 574: Rectangle2D dataArea, 575: XYPlot plot, 576: XYDataset dataset, 577: PlotRenderingInfo info) { 578: 579: // calculate the maximum allowed candle width from the axis... 580: ValueAxis axis = plot.getDomainAxis(); 581: double x1 = axis.getLowerBound(); 582: double x2 = x1 + this.maxCandleWidthInMilliseconds; 583: RectangleEdge edge = plot.getDomainAxisEdge(); 584: double xx1 = axis.valueToJava2D(x1, dataArea, edge); 585: double xx2 = axis.valueToJava2D(x2, dataArea, edge); 586: this.maxCandleWidth = Math.abs(xx2 - xx1); 587: // Absolute value, since the relative x 588: // positions are reversed for horizontal orientation 589: 590: // calculate the highest volume in the dataset... 591: if (this.drawVolume) { 592: OHLCDataset highLowDataset = (OHLCDataset) dataset; 593: this.maxVolume = 0.0; 594: for (int series = 0; series < highLowDataset.getSeriesCount(); 595: series++) { 596: for (int item = 0; item < highLowDataset.getItemCount(series); 597: item++) { 598: double volume = highLowDataset.getVolumeValue(series, item); 599: if (volume > this.maxVolume) { 600: this.maxVolume = volume; 601: } 602: 603: } 604: } 605: } 606: 607: return new XYItemRendererState(info); 608: } 609: 610: /** 611: * Draws the visual representation of a single data item. 612: * 613: * @param g2 the graphics device. 614: * @param state the renderer state. 615: * @param dataArea the area within which the plot is being drawn. 616: * @param info collects info about the drawing. 617: * @param plot the plot (can be used to obtain standard color 618: * information etc). 619: * @param domainAxis the domain axis. 620: * @param rangeAxis the range axis. 621: * @param dataset the dataset. 622: * @param series the series index (zero-based). 623: * @param item the item index (zero-based). 624: * @param crosshairState crosshair information for the plot 625: * (<code>null</code> permitted). 626: * @param pass the pass index. 627: */ 628: public void drawItem(Graphics2D g2, 629: XYItemRendererState state, 630: Rectangle2D dataArea, 631: PlotRenderingInfo info, 632: XYPlot plot, 633: ValueAxis domainAxis, 634: ValueAxis rangeAxis, 635: XYDataset dataset, 636: int series, 637: int item, 638: CrosshairState crosshairState, 639: int pass) { 640: 641: boolean horiz; 642: PlotOrientation orientation = plot.getOrientation(); 643: if (orientation == PlotOrientation.HORIZONTAL) { 644: horiz = true; 645: } 646: else if (orientation == PlotOrientation.VERTICAL) { 647: horiz = false; 648: } 649: else { 650: return; 651: } 652: 653: // setup for collecting optional entity info... 654: EntityCollection entities = null; 655: if (info != null) { 656: entities = info.getOwner().getEntityCollection(); 657: } 658: 659: OHLCDataset highLowData = (OHLCDataset) dataset; 660: 661: double x = highLowData.getXValue(series, item); 662: double yHigh = highLowData.getHighValue(series, item); 663: double yLow = highLowData.getLowValue(series, item); 664: double yOpen = highLowData.getOpenValue(series, item); 665: double yClose = highLowData.getCloseValue(series, item); 666: 667: RectangleEdge domainEdge = plot.getDomainAxisEdge(); 668: double xx = domainAxis.valueToJava2D(x, dataArea, domainEdge); 669: 670: RectangleEdge edge = plot.getRangeAxisEdge(); 671: double yyHigh = rangeAxis.valueToJava2D(yHigh, dataArea, edge); 672: double yyLow = rangeAxis.valueToJava2D(yLow, dataArea, edge); 673: double yyOpen = rangeAxis.valueToJava2D(yOpen, dataArea, edge); 674: double yyClose = rangeAxis.valueToJava2D(yClose, dataArea, edge); 675: 676: double volumeWidth; 677: double stickWidth; 678: if (this.candleWidth > 0) { 679: // These are deliberately not bounded to minimums/maxCandleWidth to 680: // retain old behaviour. 681: volumeWidth = this.candleWidth; 682: stickWidth = this.candleWidth; 683: } 684: else { 685: double xxWidth = 0; 686: int itemCount; 687: switch (this.autoWidthMethod) { 688: 689: case WIDTHMETHOD_AVERAGE: 690: itemCount = highLowData.getItemCount(series); 691: if (horiz) { 692: xxWidth = dataArea.getHeight() / itemCount; 693: } 694: else { 695: xxWidth = dataArea.getWidth() / itemCount; 696: } 697: break; 698: 699: case WIDTHMETHOD_SMALLEST: 700: // Note: It would be nice to pre-calculate this per series 701: itemCount = highLowData.getItemCount(series); 702: double lastPos = -1; 703: xxWidth = dataArea.getWidth(); 704: for (int i = 0; i < itemCount; i++) { 705: double pos = domainAxis.valueToJava2D( 706: highLowData.getXValue(series, i), dataArea, 707: domainEdge); 708: if (lastPos != -1) { 709: xxWidth = Math.min(xxWidth, 710: Math.abs(pos - lastPos)); 711: } 712: lastPos = pos; 713: } 714: break; 715: 716: case WIDTHMETHOD_INTERVALDATA: 717: IntervalXYDataset intervalXYData 718: = (IntervalXYDataset) dataset; 719: double startPos = domainAxis.valueToJava2D( 720: intervalXYData.getStartXValue(series, item), 721: dataArea, plot.getDomainAxisEdge()); 722: double endPos = domainAxis.valueToJava2D( 723: intervalXYData.getEndXValue(series, item), 724: dataArea, plot.getDomainAxisEdge()); 725: xxWidth = Math.abs(endPos - startPos); 726: break; 727: 728: } 729: xxWidth -= 2 * this.autoWidthGap; 730: xxWidth *= this.autoWidthFactor; 731: xxWidth = Math.min(xxWidth, this.maxCandleWidth); 732: volumeWidth = Math.max(Math.min(1, this.maxCandleWidth), xxWidth); 733: stickWidth = Math.max(Math.min(3, this.maxCandleWidth), xxWidth); 734: } 735: 736: Paint p = getItemPaint(series, item); 737: Paint outlinePaint = null; 738: if (this.useOutlinePaint) { 739: outlinePaint = getItemOutlinePaint(series, item); 740: } 741: Stroke s = getItemStroke(series, item); 742: 743: g2.setStroke(s); 744: 745: if (this.drawVolume) { 746: int volume = (int) highLowData.getVolumeValue(series, item); 747: double volumeHeight = volume / this.maxVolume; 748: 749: double min, max; 750: if (horiz) { 751: min = dataArea.getMinX(); 752: max = dataArea.getMaxX(); 753: } 754: else { 755: min = dataArea.getMinY(); 756: max = dataArea.getMaxY(); 757: } 758: 759: double zzVolume = volumeHeight * (max - min); 760: 761: g2.setPaint(getVolumePaint()); 762: Composite originalComposite = g2.getComposite(); 763: g2.setComposite( 764: AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.3f) 765: ); 766: 767: if (horiz) { 768: g2.fill(new Rectangle2D.Double(min, xx - volumeWidth / 2, 769: zzVolume, volumeWidth)); 770: } 771: else { 772: g2.fill(new Rectangle2D.Double(xx - volumeWidth / 2, 773: max - zzVolume, volumeWidth, zzVolume)); 774: } 775: 776: g2.setComposite(originalComposite); 777: } 778: 779: if (this.useOutlinePaint) { 780: g2.setPaint(outlinePaint); 781: } 782: else { 783: g2.setPaint(p); 784: } 785: 786: double yyMaxOpenClose = Math.max(yyOpen, yyClose); 787: double yyMinOpenClose = Math.min(yyOpen, yyClose); 788: double maxOpenClose = Math.max(yOpen, yClose); 789: double minOpenClose = Math.min(yOpen, yClose); 790: 791: // draw the upper shadow 792: if (yHigh > maxOpenClose) { 793: if (horiz) { 794: g2.draw(new Line2D.Double(yyHigh, xx, yyMaxOpenClose, xx)); 795: } 796: else { 797: g2.draw(new Line2D.Double(xx, yyHigh, xx, yyMaxOpenClose)); 798: } 799: } 800: 801: // draw the lower shadow 802: if (yLow < minOpenClose) { 803: if (horiz) { 804: g2.draw(new Line2D.Double(yyLow, xx, yyMinOpenClose, xx)); 805: } 806: else { 807: g2.draw(new Line2D.Double(xx, yyLow, xx, yyMinOpenClose)); 808: } 809: } 810: 811: // draw the body 812: Shape body = null; 813: if (horiz) { 814: body = new Rectangle2D.Double(yyMinOpenClose, xx - stickWidth / 2, 815: yyMaxOpenClose - yyMinOpenClose, stickWidth); 816: } 817: else { 818: body = new Rectangle2D.Double(xx - stickWidth / 2, yyMinOpenClose, 819: stickWidth, yyMaxOpenClose - yyMinOpenClose); 820: } 821: if (yClose > yOpen) { 822: if (this.upPaint != null) { 823: g2.setPaint(this.upPaint); 824: } 825: else { 826: g2.setPaint(p); 827: } 828: g2.fill(body); 829: } 830: else { 831: if (this.downPaint != null) { 832: g2.setPaint(this.downPaint); 833: } 834: else { 835: g2.setPaint(p); 836: } 837: g2.fill(body); 838: } 839: if (this.useOutlinePaint) { 840: g2.setPaint(outlinePaint); 841: } 842: else { 843: g2.setPaint(p); 844: } 845: g2.draw(body); 846: 847: // add an entity for the item... 848: if (entities != null) { 849: String tip = null; 850: XYToolTipGenerator generator = getToolTipGenerator(series, item); 851: if (generator != null) { 852: tip = generator.generateToolTip(dataset, series, item); 853: } 854: String url = null; 855: if (getURLGenerator() != null) { 856: url = getURLGenerator().generateURL(dataset, series, item); 857: } 858: XYItemEntity entity = new XYItemEntity(body, dataset, series, item, 859: tip, url); 860: entities.add(entity); 861: } 862: 863: } 864: 865: /** 866: * Tests this renderer for equality with another object. 867: * 868: * @param obj the object (<code>null</code> permitted). 869: * 870: * @return <code>true</code> or <code>false</code>. 871: */ 872: public boolean equals(Object obj) { 873: if (obj == this) { 874: return true; 875: } 876: if (!(obj instanceof CandlestickRenderer)) { 877: return false; 878: } 879: CandlestickRenderer that = (CandlestickRenderer) obj; 880: if (this.candleWidth != that.candleWidth) { 881: return false; 882: } 883: if (!PaintUtilities.equal(this.upPaint, that.upPaint)) { 884: return false; 885: } 886: if (!PaintUtilities.equal(this.downPaint, that.downPaint)) { 887: return false; 888: } 889: if (this.drawVolume != that.drawVolume) { 890: return false; 891: } 892: if (this.maxCandleWidthInMilliseconds 893: != that.maxCandleWidthInMilliseconds) { 894: return false; 895: } 896: if (this.autoWidthMethod != that.autoWidthMethod) { 897: return false; 898: } 899: if (this.autoWidthFactor != that.autoWidthFactor) { 900: return false; 901: } 902: if (this.autoWidthGap != that.autoWidthGap) { 903: return false; 904: } 905: if (this.useOutlinePaint != that.useOutlinePaint) { 906: return false; 907: } 908: if (!PaintUtilities.equal(this.volumePaint, that.volumePaint)) { 909: return false; 910: } 911: return super.equals(obj); 912: } 913: 914: /** 915: * Returns a clone of the renderer. 916: * 917: * @return A clone. 918: * 919: * @throws CloneNotSupportedException if the renderer cannot be cloned. 920: */ 921: public Object clone() throws CloneNotSupportedException { 922: return super.clone(); 923: } 924: 925: /** 926: * Provides serialization support. 927: * 928: * @param stream the output stream. 929: * 930: * @throws IOException if there is an I/O error. 931: */ 932: private void writeObject(ObjectOutputStream stream) throws IOException { 933: stream.defaultWriteObject(); 934: SerialUtilities.writePaint(this.upPaint, stream); 935: SerialUtilities.writePaint(this.downPaint, stream); 936: SerialUtilities.writePaint(this.volumePaint, stream); 937: } 938: 939: /** 940: * Provides serialization support. 941: * 942: * @param stream the input stream. 943: * 944: * @throws IOException if there is an I/O error. 945: * @throws ClassNotFoundException if there is a classpath problem. 946: */ 947: private void readObject(ObjectInputStream stream) 948: throws IOException, ClassNotFoundException { 949: stream.defaultReadObject(); 950: this.upPaint = SerialUtilities.readPaint(stream); 951: this.downPaint = SerialUtilities.readPaint(stream); 952: this.volumePaint = SerialUtilities.readPaint(stream); 953: } 954: 955: // --- DEPRECATED CODE ---------------------------------------------------- 956: 957: /** 958: * Returns a flag indicating whether or not volume bars are drawn on the 959: * chart. 960: * 961: * @return <code>true</code> if volume bars are drawn on the chart. 962: * 963: * @deprecated As of 1.0.5, you should use the {@link #getDrawVolume()} 964: * method. 965: */ 966: public boolean drawVolume() { 967: return this.drawVolume; 968: } 969: 970: }