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 * PaintList.java 029 * -------------- 030 * (C) Copyright 2003, 2004, by Object Refinery Limited. 031 * 032 * Original Author: David Gilbert (for Object Refinery Limited); 033 * Contributor(s): -; 034 * 035 * $Id: PaintList.java,v 1.5 2005/10/18 13:24:19 mungady Exp $ 036 * 037 * Changes 038 * ------- 039 * 13-Aug-2003 : Version 1 (DG); 040 * 27-Jun-2005 : Fixed equals() method to handle GradientPaint (DG); 041 * 042 */ 043 044 package org.jfree.util; 045 046 import java.awt.Paint; 047 import java.io.IOException; 048 import java.io.ObjectInputStream; 049 import java.io.ObjectOutputStream; 050 051 import org.jfree.io.SerialUtilities; 052 053 /** 054 * A table of {@link Paint} objects. 055 * 056 * @author David Gilbert 057 */ 058 public class PaintList extends AbstractObjectList { 059 060 /** 061 * Creates a new list. 062 */ 063 public PaintList() { 064 super(); 065 } 066 067 /** 068 * Returns a {@link Paint} object from the list. 069 * 070 * @param index the index (zero-based). 071 * 072 * @return The object. 073 */ 074 public Paint getPaint(final int index) { 075 return (Paint) get(index); 076 } 077 078 /** 079 * Sets the {@link Paint} for an item in the list. The list is expanded if necessary. 080 * 081 * @param index the index (zero-based). 082 * @param paint the {@link Paint}. 083 */ 084 public void setPaint(final int index, final Paint paint) { 085 set(index, paint); 086 } 087 088 /** 089 * Tests the list for equality with another object (typically also a list). 090 * 091 * @param obj the other object (<code>null</code> permitted). 092 * 093 * @return A boolean. 094 */ 095 public boolean equals(final Object obj) { 096 if (obj == null) { 097 return false; 098 } 099 if (obj == this) { 100 return true; 101 } 102 if (obj instanceof PaintList) { 103 PaintList that = (PaintList) obj; 104 int listSize = size(); 105 for (int i = 0; i < listSize; i++) { 106 if (!PaintUtilities.equal(getPaint(i), that.getPaint(i))) { 107 return false; 108 } 109 } 110 } 111 return true; 112 } 113 114 /** 115 * Returns a hash code value for the object. 116 * 117 * @return the hashcode 118 */ 119 public int hashCode() { 120 return super.hashCode(); 121 } 122 123 /** 124 * Provides serialization support. 125 * 126 * @param stream the output stream. 127 * 128 * @throws IOException if there is an I/O error. 129 */ 130 private void writeObject(final ObjectOutputStream stream) throws IOException { 131 132 stream.defaultWriteObject(); 133 final int count = size(); 134 stream.writeInt(count); 135 for (int i = 0; i < count; i++) { 136 final Paint paint = getPaint(i); 137 if (paint != null) { 138 stream.writeInt(i); 139 SerialUtilities.writePaint(paint, stream); 140 } 141 else { 142 stream.writeInt(-1); 143 } 144 } 145 146 } 147 148 /** 149 * Provides serialization support. 150 * 151 * @param stream the input stream. 152 * 153 * @throws IOException if there is an I/O error. 154 * @throws ClassNotFoundException if there is a classpath problem. 155 */ 156 private void readObject(final ObjectInputStream stream) throws IOException, ClassNotFoundException { 157 158 stream.defaultReadObject(); 159 final int count = stream.readInt(); 160 for (int i = 0; i < count; i++) { 161 final int index = stream.readInt(); 162 if (index != -1) { 163 setPaint(index, SerialUtilities.readPaint(stream)); 164 } 165 } 166 167 } 168 169 } 170