| 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: * YIntervalRenderer.java 29: * ---------------------- 30: * (C) Copyright 2002-2007, by Object Refinery Limited. 31: * 32: * Original Author: David Gilbert (for Object Refinery Limited); 33: * Contributor(s): -; 34: * 35: * $Id: YIntervalRenderer.java,v 1.7.2.2 2007/02/20 15:35:54 mungady Exp $ 36: * 37: * Changes 38: * ------- 39: * 05-Nov-2002 : Version 1 (DG); 40: * 25-Mar-2003 : Implemented Serializable (DG); 41: * 01-May-2003 : Modified drawItem() method signature (DG); 42: * 20-Aug-2003 : Implemented Cloneable and PublicCloneable (DG); 43: * 16-Sep-2003 : Changed ChartRenderingInfo --> PlotRenderingInfo (DG); 44: * 25-Feb-2004 : Replaced CrosshairInfo with CrosshairState (DG); 45: * 27-Sep-2004 : Access double values from dataset (DG); 46: * 11-Nov-2004 : Now uses ShapeUtilities to translate shapes (DG); 47: * 48: */ 49: 50: package org.jfree.chart.renderer.xy; 51: 52: import java.awt.Graphics2D; 53: import java.awt.Paint; 54: import java.awt.Shape; 55: import java.awt.Stroke; 56: import java.awt.geom.Line2D; 57: import java.awt.geom.Rectangle2D; 58: import java.io.Serializable; 59: 60: import org.jfree.chart.axis.ValueAxis; 61: import org.jfree.chart.entity.EntityCollection; 62: import org.jfree.chart.entity.XYItemEntity; 63: import org.jfree.chart.labels.XYToolTipGenerator; 64: import org.jfree.chart.plot.CrosshairState; 65: import org.jfree.chart.plot.PlotOrientation; 66: import org.jfree.chart.plot.PlotRenderingInfo; 67: import org.jfree.chart.plot.XYPlot; 68: import org.jfree.data.xy.IntervalXYDataset; 69: import org.jfree.data.xy.XYDataset; 70: import org.jfree.ui.RectangleEdge; 71: import org.jfree.util.PublicCloneable; 72: import org.jfree.util.ShapeUtilities; 73: 74: /** 75: * A renderer that draws a line connecting the start and end Y values for an 76: * {@link XYPlot}. 77: */ 78: public class YIntervalRenderer extends AbstractXYItemRenderer 79: implements XYItemRenderer, 80: Cloneable, 81: PublicCloneable, 82: Serializable { 83: 84: private static final long serialVersionUID = -2951586537224143260L; 85: 86: /** 87: * The default constructor. 88: */ 89: public YIntervalRenderer() { 90: super(); 91: } 92: 93: /** 94: * Draws the visual representation of a single data item. 95: * 96: * @param g2 the graphics device. 97: * @param state the renderer state. 98: * @param dataArea the area within which the plot is being drawn. 99: * @param info collects information about the drawing. 100: * @param plot the plot (can be used to obtain standard color 101: * information etc). 102: * @param domainAxis the domain axis. 103: * @param rangeAxis the range axis. 104: * @param dataset the dataset. 105: * @param series the series index (zero-based). 106: * @param item the item index (zero-based). 107: * @param crosshairState crosshair information for the plot 108: * (<code>null</code> permitted). 109: * @param pass the pass index (ignored here). 110: */ 111: public void drawItem(Graphics2D g2, 112: XYItemRendererState state, 113: Rectangle2D dataArea, 114: PlotRenderingInfo info, 115: XYPlot plot, 116: ValueAxis domainAxis, 117: ValueAxis rangeAxis, 118: XYDataset dataset, 119: int series, 120: int item, 121: CrosshairState crosshairState, 122: int pass) { 123: 124: // setup for collecting optional entity info... 125: Shape entityArea = null; 126: EntityCollection entities = null; 127: if (info != null) { 128: entities = info.getOwner().getEntityCollection(); 129: } 130: 131: IntervalXYDataset intervalDataset = (IntervalXYDataset) dataset; 132: 133: double x = intervalDataset.getXValue(series, item); 134: double yLow = intervalDataset.getStartYValue(series, item); 135: double yHigh = intervalDataset.getEndYValue(series, item); 136: 137: RectangleEdge xAxisLocation = plot.getDomainAxisEdge(); 138: RectangleEdge yAxisLocation = plot.getRangeAxisEdge(); 139: 140: double xx = domainAxis.valueToJava2D(x, dataArea, xAxisLocation); 141: double yyLow = rangeAxis.valueToJava2D(yLow, dataArea, yAxisLocation); 142: double yyHigh = rangeAxis.valueToJava2D(yHigh, dataArea, yAxisLocation); 143: 144: Paint p = getItemPaint(series, item); 145: Stroke s = getItemStroke(series, item); 146: 147: Line2D line = null; 148: Shape shape = getItemShape(series, item); 149: Shape top = null; 150: Shape bottom = null; 151: PlotOrientation orientation = plot.getOrientation(); 152: if (orientation == PlotOrientation.HORIZONTAL) { 153: line = new Line2D.Double(yyLow, xx, yyHigh, xx); 154: top = ShapeUtilities.createTranslatedShape(shape, yyHigh, xx); 155: bottom = ShapeUtilities.createTranslatedShape(shape, yyLow, xx); 156: } 157: else if (orientation == PlotOrientation.VERTICAL) { 158: line = new Line2D.Double(xx, yyLow, xx, yyHigh); 159: top = ShapeUtilities.createTranslatedShape(shape, xx, yyHigh); 160: bottom = ShapeUtilities.createTranslatedShape(shape, xx, yyLow); 161: } 162: g2.setPaint(p); 163: g2.setStroke(s); 164: g2.draw(line); 165: 166: g2.fill(top); 167: g2.fill(bottom); 168: 169: // add an entity for the item... 170: if (entities != null) { 171: if (entityArea == null) { 172: entityArea = line.getBounds(); 173: } 174: String tip = null; 175: XYToolTipGenerator generator = getToolTipGenerator(series, item); 176: if (generator != null) { 177: tip = generator.generateToolTip(dataset, series, item); 178: } 179: String url = null; 180: if (getURLGenerator() != null) { 181: url = getURLGenerator().generateURL(dataset, series, item); 182: } 183: XYItemEntity entity = new XYItemEntity(entityArea, dataset, series, 184: item, tip, url); 185: entities.add(entity); 186: } 187: 188: } 189: 190: /** 191: * Returns a clone of the renderer. 192: * 193: * @return A clone. 194: * 195: * @throws CloneNotSupportedException if the renderer cannot be cloned. 196: */ 197: public Object clone() throws CloneNotSupportedException { 198: return super.clone(); 199: } 200: 201: }