001 /* ======================================================================== 002 * JCommon : a free general purpose class library for the Java(tm) platform 003 * ======================================================================== 004 * 005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 006 * 007 * Project Info: http://www.jfree.org/jcommon/index.html 008 * 009 * This library is free software; you can redistribute it and/or modify it 010 * under the terms of the GNU Lesser General Public License as published by 011 * the Free Software Foundation; either version 2.1 of the License, or 012 * (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but 015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 017 * License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this library; if not, write to the Free Software 021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 022 * USA. 023 * 024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 025 * in the United States and other countries.] 026 * 027 * -------------------- 028 * TextBlockAnchor.java 029 * -------------------- 030 * (C) Copyright 2003-2005, by Object Refinery Limited. 031 * 032 * Original Author: David Gilbert (for Object Refinery Limited); 033 * Contributor(s): -; 034 * 035 * $Id: TextBlockAnchor.java,v 1.4 2005/10/18 13:17:16 mungady Exp $ 036 * 037 * Changes: 038 * -------- 039 * 06-Nov-2003 : Version 1 (DG); 040 * 22-Mar-2004 : Added readResolve() method (DG); 041 * 042 */ 043 044 package org.jfree.text; 045 046 import java.io.ObjectStreamException; 047 import java.io.Serializable; 048 049 /** 050 * Used to indicate the position of an anchor point for a text block. 051 * 052 * @author David Gilbert 053 */ 054 public final class TextBlockAnchor implements Serializable { 055 056 /** For serialization. */ 057 private static final long serialVersionUID = -3045058380983401544L; 058 059 /** Top/left. */ 060 public static final TextBlockAnchor TOP_LEFT 061 = new TextBlockAnchor("TextBlockAnchor.TOP_LEFT"); 062 063 /** Top/center. */ 064 public static final TextBlockAnchor TOP_CENTER = new TextBlockAnchor( 065 "TextBlockAnchor.TOP_CENTER" 066 ); 067 068 /** Top/right. */ 069 public static final TextBlockAnchor TOP_RIGHT = new TextBlockAnchor( 070 "TextBlockAnchor.TOP_RIGHT" 071 ); 072 073 /** Middle/left. */ 074 public static final TextBlockAnchor CENTER_LEFT = new TextBlockAnchor( 075 "TextBlockAnchor.CENTER_LEFT" 076 ); 077 078 /** Middle/center. */ 079 public static final TextBlockAnchor CENTER 080 = new TextBlockAnchor("TextBlockAnchor.CENTER"); 081 082 /** Middle/right. */ 083 public static final TextBlockAnchor CENTER_RIGHT = new TextBlockAnchor( 084 "TextBlockAnchor.CENTER_RIGHT" 085 ); 086 087 /** Bottom/left. */ 088 public static final TextBlockAnchor BOTTOM_LEFT 089 = new TextBlockAnchor("TextBlockAnchor.BOTTOM_LEFT"); 090 091 /** Bottom/center. */ 092 public static final TextBlockAnchor BOTTOM_CENTER 093 = new TextBlockAnchor("TextBlockAnchor.BOTTOM_CENTER"); 094 095 /** Bottom/right. */ 096 public static final TextBlockAnchor BOTTOM_RIGHT 097 = new TextBlockAnchor("TextBlockAnchor.BOTTOM_RIGHT"); 098 099 /** The name. */ 100 private String name; 101 102 /** 103 * Private constructor. 104 * 105 * @param name the name. 106 */ 107 private TextBlockAnchor(final String name) { 108 this.name = name; 109 } 110 111 /** 112 * Returns a string representing the object. 113 * 114 * @return The string. 115 */ 116 public String toString() { 117 return this.name; 118 } 119 120 /** 121 * Returns <code>true</code> if this object is equal to the specified 122 * object, and <code>false</code> otherwise. 123 * 124 * @param o the other object. 125 * 126 * @return A boolean. 127 */ 128 public boolean equals(final Object o) { 129 130 if (this == o) { 131 return true; 132 } 133 if (!(o instanceof TextBlockAnchor)) { 134 return false; 135 } 136 137 final TextBlockAnchor other = (TextBlockAnchor) o; 138 if (!this.name.equals(other.name)) { 139 return false; 140 } 141 142 return true; 143 } 144 145 /** 146 * Returns a hash code value for the object. 147 * 148 * @return the hashcode 149 */ 150 public int hashCode() { 151 return this.name.hashCode(); 152 } 153 154 /** 155 * Ensures that serialization returns the unique instances. 156 * 157 * @return The object. 158 * 159 * @throws ObjectStreamException if there is a problem. 160 */ 161 private Object readResolve() throws ObjectStreamException { 162 if (this.equals(TextBlockAnchor.TOP_CENTER)) { 163 return TextBlockAnchor.TOP_CENTER; 164 } 165 else if (this.equals(TextBlockAnchor.TOP_LEFT)) { 166 return TextBlockAnchor.TOP_LEFT; 167 } 168 else if (this.equals(TextBlockAnchor.TOP_RIGHT)) { 169 return TextBlockAnchor.TOP_RIGHT; 170 } 171 else if (this.equals(TextBlockAnchor.CENTER)) { 172 return TextBlockAnchor.CENTER; 173 } 174 else if (this.equals(TextBlockAnchor.CENTER_LEFT)) { 175 return TextBlockAnchor.CENTER_LEFT; 176 } 177 else if (this.equals(TextBlockAnchor.CENTER_RIGHT)) { 178 return TextBlockAnchor.CENTER_RIGHT; 179 } 180 else if (this.equals(TextBlockAnchor.BOTTOM_CENTER)) { 181 return TextBlockAnchor.BOTTOM_CENTER; 182 } 183 else if (this.equals(TextBlockAnchor.BOTTOM_LEFT)) { 184 return TextBlockAnchor.BOTTOM_LEFT; 185 } 186 else if (this.equals(TextBlockAnchor.BOTTOM_RIGHT)) { 187 return TextBlockAnchor.BOTTOM_RIGHT; 188 } 189 return null; 190 } 191 192 }