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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: * XYDrawableAnnotation.java 29: * ------------------------- 30: * (C) Copyright 2003-2007, by Object Refinery Limited. 31: * 32: * Original Author: David Gilbert (for Object Refinery Limited); 33: * Contributor(s): -; 34: * 35: * $Id: XYDrawableAnnotation.java,v 1.6.2.2 2007/03/06 16:12:18 mungady Exp $ 36: * 37: * Changes: 38: * -------- 39: * 21-May-2003 : Version 1 (DG); 40: * 21-Jan-2004 : Update for renamed method in ValueAxis (DG); 41: * 30-Sep-2004 : Added support for tool tips and URLs (DG); 42: * 43: */ 44: 45: package org.jfree.chart.annotations; 46: 47: import java.awt.Graphics2D; 48: import java.awt.geom.Rectangle2D; 49: import java.io.Serializable; 50: 51: import org.jfree.chart.axis.ValueAxis; 52: import org.jfree.chart.plot.Plot; 53: import org.jfree.chart.plot.PlotOrientation; 54: import org.jfree.chart.plot.PlotRenderingInfo; 55: import org.jfree.chart.plot.XYPlot; 56: import org.jfree.ui.Drawable; 57: import org.jfree.ui.RectangleEdge; 58: import org.jfree.util.ObjectUtilities; 59: import org.jfree.util.PublicCloneable; 60: 61: /** 62: * A general annotation that can be placed on an {@link XYPlot}. 63: */ 64: public class XYDrawableAnnotation extends AbstractXYAnnotation 65: implements Cloneable, PublicCloneable, 66: Serializable { 67: 68: /** For serialization. */ 69: private static final long serialVersionUID = -6540812859722691020L; 70: 71: /** The x-coordinate. */ 72: private double x; 73: 74: /** The y-coordinate. */ 75: private double y; 76: 77: /** The width. */ 78: private double width; 79: 80: /** The height. */ 81: private double height; 82: 83: /** The drawable object. */ 84: private Drawable drawable; 85: 86: /** 87: * Creates a new annotation to be displayed within the given area. 88: * 89: * @param x the x-coordinate for the area. 90: * @param y the y-coordinate for the area. 91: * @param width the width of the area. 92: * @param height the height of the area. 93: * @param drawable the drawable object (<code>null</code> not permitted). 94: */ 95: public XYDrawableAnnotation(double x, double y, double width, double height, 96: Drawable drawable) { 97: 98: if (drawable == null) { 99: throw new IllegalArgumentException("Null 'drawable' argument."); 100: } 101: this.x = x; 102: this.y = y; 103: this.width = width; 104: this.height = height; 105: this.drawable = drawable; 106: 107: } 108: 109: /** 110: * Draws the annotation. 111: * 112: * @param g2 the graphics device. 113: * @param plot the plot. 114: * @param dataArea the data area. 115: * @param domainAxis the domain axis. 116: * @param rangeAxis the range axis. 117: * @param rendererIndex the renderer index. 118: * @param info if supplied, this info object will be populated with 119: * entity information. 120: */ 121: public void draw(Graphics2D g2, XYPlot plot, Rectangle2D dataArea, 122: ValueAxis domainAxis, ValueAxis rangeAxis, 123: int rendererIndex, 124: PlotRenderingInfo info) { 125: 126: PlotOrientation orientation = plot.getOrientation(); 127: RectangleEdge domainEdge = Plot.resolveDomainAxisLocation( 128: plot.getDomainAxisLocation(), orientation); 129: RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation( 130: plot.getRangeAxisLocation(), orientation); 131: float j2DX = (float) domainAxis.valueToJava2D(this.x, dataArea, 132: domainEdge); 133: float j2DY = (float) rangeAxis.valueToJava2D(this.y, dataArea, 134: rangeEdge); 135: Rectangle2D area = new Rectangle2D.Double(j2DX - this.width / 2.0, 136: j2DY - this.height / 2.0, this.width, this.height); 137: this.drawable.draw(g2, area); 138: String toolTip = getToolTipText(); 139: String url = getURL(); 140: if (toolTip != null || url != null) { 141: addEntity(info, area, rendererIndex, toolTip, url); 142: } 143: 144: } 145: 146: /** 147: * Tests this annotation for equality with an arbitrary object. 148: * 149: * @param obj the object to test against. 150: * 151: * @return <code>true</code> or <code>false</code>. 152: */ 153: public boolean equals(Object obj) { 154: 155: if (obj == this) { // simple case 156: return true; 157: } 158: // now try to reject equality... 159: if (!super.equals(obj)) { 160: return false; 161: } 162: if (!(obj instanceof XYDrawableAnnotation)) { 163: return false; 164: } 165: XYDrawableAnnotation that = (XYDrawableAnnotation) obj; 166: if (this.x != that.x) { 167: return false; 168: } 169: if (this.y != that.y) { 170: return false; 171: } 172: if (this.width != that.width) { 173: return false; 174: } 175: if (this.height != that.height) { 176: return false; 177: } 178: if (!ObjectUtilities.equal(this.drawable, that.drawable)) { 179: return false; 180: } 181: // seem to be the same... 182: return true; 183: 184: } 185: 186: /** 187: * Returns a hash code. 188: * 189: * @return A hash code. 190: */ 191: public int hashCode() { 192: int result; 193: long temp; 194: temp = Double.doubleToLongBits(this.x); 195: result = (int) (temp ^ (temp >>> 32)); 196: temp = Double.doubleToLongBits(this.y); 197: result = 29 * result + (int) (temp ^ (temp >>> 32)); 198: temp = Double.doubleToLongBits(this.width); 199: result = 29 * result + (int) (temp ^ (temp >>> 32)); 200: temp = Double.doubleToLongBits(this.height); 201: result = 29 * result + (int) (temp ^ (temp >>> 32)); 202: return result; 203: } 204: 205: /** 206: * Returns a clone of the annotation. 207: * 208: * @return A clone. 209: * 210: * @throws CloneNotSupportedException if the annotation can't be cloned. 211: */ 212: public Object clone() throws CloneNotSupportedException { 213: return super.clone(); 214: } 215: 216: }