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Java > Open Source Codes > org > jfree > ui > TextAnchor


1 /* ========================================================================
2  * JCommon : a free general purpose class 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/jcommon/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  * TextAnchor.java
29  * ---------------
30  * (C) Copyright 2003-2005, by Object Refinery Limited.
31  *
32  * Original Author: David Gilbert (for Object Refinery Limited);
33  * Contributor(s): -;
34  *
35  * $Id: TextAnchor.java,v 1.5 2005/10/18 13:18:34 mungady Exp $
36  *
37  * Changes:
38  * --------
39  * 10-Jun-2003 : Version 1 (DG);
40  * 11-Jan-2005 : Removed deprecated code (DG);
41  *
42  */
43
44 package org.jfree.ui;
45
46 import java.io.ObjectStreamException JavaDoc;
47 import java.io.Serializable JavaDoc;
48
49 /**
50  * Used to indicate the position of an anchor point for a text string. This is
51  * frequently used to align a string to a fixed point in some coordinate space.
52  *
53  * @author David Gilbert
54  */
55 public final class TextAnchor implements Serializable JavaDoc {
56
57     /** For serialization. */
58     private static final long serialVersionUID = 8219158940496719660L;
59     
60     /** Top/left. */
61     public static final TextAnchor TOP_LEFT
62         = new TextAnchor("TextAnchor.TOP_LEFT");
63
64     /** Top/center. */
65     public static final TextAnchor TOP_CENTER
66         = new TextAnchor("TextAnchor.TOP_CENTER");
67
68     /** Top/right. */
69     public static final TextAnchor TOP_RIGHT
70         = new TextAnchor("TextAnchor.TOP_RIGHT");
71
72     /** Half-ascent/left. */
73     public static final TextAnchor HALF_ASCENT_LEFT
74         = new TextAnchor("TextAnchor.HALF_ASCENT_LEFT");
75
76     /** Half-ascent/center. */
77     public static final TextAnchor HALF_ASCENT_CENTER
78         = new TextAnchor("TextAnchor.HALF_ASCENT_CENTER");
79
80     /** Half-ascent/right. */
81     public static final TextAnchor HALF_ASCENT_RIGHT
82         = new TextAnchor("TextAnchor.HALF_ASCENT_RIGHT");
83
84     /** Middle/left. */
85     public static final TextAnchor CENTER_LEFT
86         = new TextAnchor("TextAnchor.CENTER_LEFT");
87
88     /** Middle/center. */
89     public static final TextAnchor CENTER = new TextAnchor("TextAnchor.CENTER");
90
91     /** Middle/right. */
92     public static final TextAnchor CENTER_RIGHT
93         = new TextAnchor("TextAnchor.CENTER_RIGHT");
94
95     /** Baseline/left. */
96     public static final TextAnchor BASELINE_LEFT
97         = new TextAnchor("TextAnchor.BASELINE_LEFT");
98
99     /** Baseline/center. */
100     public static final TextAnchor BASELINE_CENTER
101         = new TextAnchor("TextAnchor.BASELINE_CENTER");
102
103     /** Baseline/right. */
104     public static final TextAnchor BASELINE_RIGHT
105         = new TextAnchor("TextAnchor.BASELINE_RIGHT");
106
107     /** Bottom/left. */
108     public static final TextAnchor BOTTOM_LEFT
109         = new TextAnchor("TextAnchor.BOTTOM_LEFT");
110
111     /** Bottom/center. */
112     public static final TextAnchor BOTTOM_CENTER
113         = new TextAnchor("TextAnchor.BOTTOM_CENTER");
114
115     /** Bottom/right. */
116     public static final TextAnchor BOTTOM_RIGHT
117         = new TextAnchor("TextAnchor.BOTTOM_RIGHT");
118
119     /** The name. */
120     private String JavaDoc name;
121
122     /**
123      * Private constructor.
124      *
125      * @param name the name.
126      */
127     private TextAnchor(final String JavaDoc name) {
128         this.name = name;
129     }
130
131     /**
132      * Returns a string representing the object.
133      *
134      * @return The string.
135      */
136     public String JavaDoc toString() {
137         return this.name;
138     }
139
140     /**
141      * Returns <code>true</code> if this object is equal to the specified
142      * object, and <code>false</code> otherwise.
143      *
144      * @param o the other object.
145      *
146      * @return A boolean.
147      */
148     public boolean equals(final Object JavaDoc o) {
149
150         if (this == o) {
151             return true;
152         }
153         if (!(o instanceof TextAnchor)) {
154             return false;
155         }
156
157         final TextAnchor order = (TextAnchor) o;
158         if (!this.name.equals(order.name)) {
159             return false;
160         }
161
162         return true;
163     }
164
165     /**
166      * Returns a hash code value for the object.
167      *
168      * @return The hashcode
169      */
170     public int hashCode() {
171         return this.name.hashCode();
172     }
173
174     /**
175      * Ensures that serialization returns the unique instances.
176      *
177      * @return The object.
178      *
179      * @throws ObjectStreamException if there is a problem.
180      */
181     private Object JavaDoc readResolve() throws ObjectStreamException JavaDoc {
182         TextAnchor result = null;
183         if (this.equals(TextAnchor.TOP_LEFT)) {
184             result = TextAnchor.TOP_LEFT;
185         }
186         else if (this.equals(TextAnchor.TOP_CENTER)) {
187             result = TextAnchor.TOP_CENTER;
188         }
189         else if (this.equals(TextAnchor.TOP_RIGHT)) {
190             result = TextAnchor.TOP_RIGHT;
191         }
192         else if (this.equals(TextAnchor.BOTTOM_LEFT)) {
193             result = TextAnchor.BOTTOM_LEFT;
194         }
195         else if (this.equals(TextAnchor.BOTTOM_CENTER)) {
196             result = TextAnchor.BOTTOM_CENTER;
197         }
198         else if (this.equals(TextAnchor.BOTTOM_RIGHT)) {
199             result = TextAnchor.BOTTOM_RIGHT;
200         }
201         else if (this.equals(TextAnchor.BASELINE_LEFT)) {
202             result = TextAnchor.BASELINE_LEFT;
203         }
204         else if (this.equals(TextAnchor.BASELINE_CENTER)) {
205             result = TextAnchor.BASELINE_CENTER;
206         }
207         else if (this.equals(TextAnchor.BASELINE_RIGHT)) {
208             result = TextAnchor.BASELINE_RIGHT;
209         }
210         else if (this.equals(TextAnchor.CENTER_LEFT)) {
211             result = TextAnchor.CENTER_LEFT;
212         }
213         else if (this.equals(TextAnchor.CENTER)) {
214             result = TextAnchor.CENTER;
215         }
216         else if (this.equals(TextAnchor.CENTER_RIGHT)) {
217             result = TextAnchor.CENTER_RIGHT;
218         }
219         else if (this.equals(TextAnchor.HALF_ASCENT_LEFT)) {
220             result = TextAnchor.HALF_ASCENT_LEFT;
221         }
222         else if (this.equals(TextAnchor.HALF_ASCENT_CENTER)) {
223             result = TextAnchor.HALF_ASCENT_CENTER;
224         }
225         else if (this.equals(TextAnchor.HALF_ASCENT_RIGHT)) {
226             result = TextAnchor.HALF_ASCENT_RIGHT;
227         }
228         return result;
229     }
230
231 }
232
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