001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
006 *
007 * Project Info: http://www.jfree.org/jfreechart/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 * PlotRenderingInfo.java
029 * ----------------------
030 * (C) Copyright 2003-2007, by Object Refinery Limited.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): -;
034 *
035 * Changes
036 * -------
037 * 16-Sep-2003 : Version 1 (DG);
038 * 23-Sep-2003 : Added Javadocs (DG);
039 * 12-Nov-2004 : Added getSubplotCount() and findSubplot() methods (DG);
040 * 01-Nov-2005 : Made 'owner' non-transient to fix bug 1344048 (DG);
041 * ------------- JFREECHART 1.0.x ---------------------------------------------
042 * 01-Dec-2006 : Implemented clone() method properly (DG);
043 * 17-Apr-2007 : Fixed bug 1698965 (NPE in CombinedDomainXYPlot) (DG);
044 *
045 */
046
047 package org.jfree.chart.plot;
048
049 import java.awt.geom.Point2D;
050 import java.awt.geom.Rectangle2D;
051 import java.io.IOException;
052 import java.io.ObjectInputStream;
053 import java.io.ObjectOutputStream;
054 import java.io.Serializable;
055 import java.util.List;
056
057 import org.jfree.chart.ChartRenderingInfo;
058 import org.jfree.io.SerialUtilities;
059 import org.jfree.util.ObjectUtilities;
060
061 /**
062 * Stores information about the dimensions of a plot and its subplots.
063 */
064 public class PlotRenderingInfo implements Cloneable, Serializable {
065
066 /** For serialization. */
067 private static final long serialVersionUID = 8446720134379617220L;
068
069 /** The owner of this info. */
070 private ChartRenderingInfo owner;
071
072 /** The plot area. */
073 private transient Rectangle2D plotArea;
074
075 /** The data area. */
076 private transient Rectangle2D dataArea;
077
078 /**
079 * Storage for the plot rendering info objects belonging to the subplots.
080 */
081 private List subplotInfo;
082
083 /**
084 * Creates a new instance.
085 *
086 * @param owner the owner (<code>null</code> permitted).
087 */
088 public PlotRenderingInfo(ChartRenderingInfo owner) {
089 this.owner = owner;
090 this.dataArea = new Rectangle2D.Double();
091 this.subplotInfo = new java.util.ArrayList();
092 }
093
094 /**
095 * Returns the owner (as specified in the constructor).
096 *
097 * @return The owner (possibly <code>null</code>).
098 */
099 public ChartRenderingInfo getOwner() {
100 return this.owner;
101 }
102
103 /**
104 * Returns the plot area (in Java2D space).
105 *
106 * @return The plot area (possibly <code>null</code>).
107 *
108 * @see #setPlotArea(Rectangle2D)
109 */
110 public Rectangle2D getPlotArea() {
111 return this.plotArea;
112 }
113
114 /**
115 * Sets the plot area.
116 *
117 * @param area the plot area (in Java2D space, <code>null</code>
118 * permitted but discouraged)
119 *
120 * @see #getPlotArea()
121 */
122 public void setPlotArea(Rectangle2D area) {
123 this.plotArea = area;
124 }
125
126 /**
127 * Returns the plot's data area (in Java2D space).
128 *
129 * @return The data area (possibly <code>null</code>).
130 *
131 * @see #setDataArea(Rectangle2D)
132 */
133 public Rectangle2D getDataArea() {
134 return this.dataArea;
135 }
136
137 /**
138 * Sets the data area.
139 *
140 * @param area the data area (in Java2D space, <code>null</code> permitted
141 * but discouraged).
142 *
143 * @see #getDataArea()
144 */
145 public void setDataArea(Rectangle2D area) {
146 this.dataArea = area;
147 }
148
149 /**
150 * Returns the number of subplots (possibly zero).
151 *
152 * @return The subplot count.
153 */
154 public int getSubplotCount() {
155 return this.subplotInfo.size();
156 }
157
158 /**
159 * Adds the info for a subplot.
160 *
161 * @param info the subplot info.
162 *
163 * @see #getSubplotInfo(int)
164 */
165 public void addSubplotInfo(PlotRenderingInfo info) {
166 this.subplotInfo.add(info);
167 }
168
169 /**
170 * Returns the info for a subplot.
171 *
172 * @param index the subplot index.
173 *
174 * @return The info.
175 *
176 * @see #addSubplotInfo(PlotRenderingInfo)
177 */
178 public PlotRenderingInfo getSubplotInfo(int index) {
179 return (PlotRenderingInfo) this.subplotInfo.get(index);
180 }
181
182 /**
183 * Returns the index of the subplot that contains the specified
184 * (x, y) point (the "source" point). The source point will usually
185 * come from a mouse click on a {@link org.jfree.chart.ChartPanel},
186 * and this method is then used to determine the subplot that
187 * contains the source point.
188 *
189 * @param source the source point (in Java2D space, <code>null</code> not
190 * permitted).
191 *
192 * @return The subplot index (or -1 if no subplot contains
193 * <code>source</code>).
194 */
195 public int getSubplotIndex(Point2D source) {
196 if (source == null) {
197 throw new IllegalArgumentException("Null 'source' argument.");
198 }
199 int subplotCount = getSubplotCount();
200 for (int i = 0; i < subplotCount; i++) {
201 PlotRenderingInfo info = getSubplotInfo(i);
202 Rectangle2D area = info.getDataArea();
203 if (area.contains(source)) {
204 return i;
205 }
206 }
207 return -1;
208 }
209
210 /**
211 * Tests this instance for equality against an arbitrary object.
212 *
213 * @param obj the object (<code>null</code> permitted).
214 *
215 * @return A boolean.
216 */
217 public boolean equals(Object obj) {
218 if (this == obj) {
219 return true;
220 }
221 if (!(obj instanceof PlotRenderingInfo)) {
222 return false;
223 }
224 PlotRenderingInfo that = (PlotRenderingInfo) obj;
225 if (!ObjectUtilities.equal(this.dataArea, that.dataArea)) {
226 return false;
227 }
228 if (!ObjectUtilities.equal(this.plotArea, that.plotArea)) {
229 return false;
230 }
231 if (!ObjectUtilities.equal(this.subplotInfo, that.subplotInfo)) {
232 return false;
233 }
234 return true;
235 }
236
237 /**
238 * Returns a clone of this object.
239 *
240 * @return A clone.
241 *
242 * @throws CloneNotSupportedException if there is a problem cloning.
243 */
244 public Object clone() throws CloneNotSupportedException {
245 PlotRenderingInfo clone = (PlotRenderingInfo) super.clone();
246 if (this.plotArea != null) {
247 clone.plotArea = (Rectangle2D) this.plotArea.clone();
248 }
249 if (this.dataArea != null) {
250 clone.dataArea = (Rectangle2D) this.dataArea.clone();
251 }
252 clone.subplotInfo = new java.util.ArrayList(this.subplotInfo.size());
253 for (int i = 0; i < this.subplotInfo.size(); i++) {
254 PlotRenderingInfo info
255 = (PlotRenderingInfo) this.subplotInfo.get(i);
256 clone.subplotInfo.add(info.clone());
257 }
258 return clone;
259 }
260
261 /**
262 * Provides serialization support.
263 *
264 * @param stream the output stream.
265 *
266 * @throws IOException if there is an I/O error.
267 */
268 private void writeObject(ObjectOutputStream stream) throws IOException {
269 stream.defaultWriteObject();
270 SerialUtilities.writeShape(this.dataArea, stream);
271 SerialUtilities.writeShape(this.plotArea, stream);
272 }
273
274 /**
275 * Provides serialization support.
276 *
277 * @param stream the input stream.
278 *
279 * @throws IOException if there is an I/O error.
280 * @throws ClassNotFoundException if there is a classpath problem.
281 */
282 private void readObject(ObjectInputStream stream)
283 throws IOException, ClassNotFoundException {
284 stream.defaultReadObject();
285 this.dataArea = (Rectangle2D) SerialUtilities.readShape(stream);
286 this.plotArea = (Rectangle2D) SerialUtilities.readShape(stream);
287 }
288
289 }