Source for org.jfree.chart.axis.DateTick

   1: /* ===========================================================
   2:  * JFreeChart : a free chart library for the Java(tm) platform
   3:  * ===========================================================
   4:  *
   5:  * (C) Copyright 2000-2005, 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:  * DateTick.java
  29:  * -------------
  30:  * (C) Copyright 2003, 2004, by Object Refinery Limited.
  31:  *
  32:  * Original Author:  David Gilbert (for Object Refinery Limited);
  33:  * Contributor(s):   -;
  34:  *
  35:  * $Id: DateTick.java,v 1.4.2.1 2005/10/25 20:37:34 mungady Exp $
  36:  *
  37:  * Changes
  38:  * -------
  39:  * 07-Nov-2003 : Version 1 (DG);
  40:  * 13-May-2004 : Added equals() method (DG);
  41:  *
  42:  */
  43: 
  44: package org.jfree.chart.axis;
  45: 
  46: import java.util.Date;
  47: 
  48: import org.jfree.ui.TextAnchor;
  49: import org.jfree.util.ObjectUtilities;
  50: 
  51: /**
  52:  * A tick used by the {@link DateAxis} class.
  53:  */
  54: public class DateTick extends ValueTick {
  55: 
  56:     /** The date. */
  57:     private Date date;
  58:     
  59:     /**
  60:      * Creates a new date tick.
  61:      * 
  62:      * @param date  the date.
  63:      * @param label  the label.
  64:      * @param textAnchor  the part of the label that is aligned to the anchor 
  65:      *                    point.
  66:      * @param rotationAnchor  defines the rotation point relative to the text.
  67:      * @param angle  the rotation angle (in radians).
  68:      */
  69:     public DateTick(Date date, String label,
  70:                     TextAnchor textAnchor, TextAnchor rotationAnchor, 
  71:                     double angle) {
  72:                         
  73:         super(date.getTime(), label, textAnchor, rotationAnchor, angle);
  74:         this.date = date;
  75:             
  76:     }
  77:     
  78:     /**
  79:      * Returns the date.
  80:      * 
  81:      * @return The date.
  82:      */
  83:     public Date getDate() {
  84:         return this.date;
  85:     }
  86: 
  87:     /**
  88:      * Tests this tick for equality with an arbitrary object.
  89:      * 
  90:      * @param obj  the object to test (<code>null</code> permitted).
  91:      * 
  92:      * @return A boolean.
  93:      */
  94:     public boolean equals(Object obj) {
  95:         if (obj == this) {
  96:             return true;   
  97:         }
  98:         if (obj instanceof DateTick && super.equals(obj)) {
  99:             DateTick dt = (DateTick) obj;
 100:             if (!ObjectUtilities.equal(this.date, dt.date)) {
 101:                 return false;   
 102:             }
 103:             return true;
 104:         }
 105:         return false;
 106:     }
 107:     
 108:     /**
 109:      * Returns a hash code for this object.
 110:      * 
 111:      * @return A hash code.
 112:      */
 113:     public int hashCode() {
 114:         return this.date.hashCode();
 115:     }
 116:     
 117: }