Source Code Cross Referenced for XYBoxAnnotation.java in  » Chart » jfreechart » org » jfree » chart » annotations » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Chart » jfreechart » org.jfree.chart.annotations 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* ===========================================================
002:         * JFreeChart : a free chart library for the Java(tm) platform
003:         * ===========================================================
004:         *
005:         * (C) Copyright 2000-2006, 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:         * XYBoxAnnotation.java
029:         * --------------------
030:         * (C) Copyright 2005, 2006, by Object Refinery Limited and Contributors.
031:         *
032:         * Original Author:  David Gilbert (for Object Refinery Limited);
033:         * Contributor(s):   -;
034:         *
035:         * $Id: XYBoxAnnotation.java,v 1.5.2.3 2006/08/02 11:49:10 mungady Exp $
036:         *
037:         * Changes:
038:         * --------
039:         * 19-Jan-2005 : Version 1 (DG);
040:         * 06-Jun-2005 : Fixed equals() method to handle GradientPaint (DG);
041:         * 
042:         */
043:
044:        package org.jfree.chart.annotations;
045:
046:        import java.awt.BasicStroke;
047:        import java.awt.Color;
048:        import java.awt.Graphics2D;
049:        import java.awt.Paint;
050:        import java.awt.Stroke;
051:        import java.awt.geom.Rectangle2D;
052:        import java.io.IOException;
053:        import java.io.ObjectInputStream;
054:        import java.io.ObjectOutputStream;
055:        import java.io.Serializable;
056:
057:        import org.jfree.chart.axis.ValueAxis;
058:        import org.jfree.chart.plot.Plot;
059:        import org.jfree.chart.plot.PlotOrientation;
060:        import org.jfree.chart.plot.PlotRenderingInfo;
061:        import org.jfree.chart.plot.XYPlot;
062:        import org.jfree.io.SerialUtilities;
063:        import org.jfree.ui.RectangleEdge;
064:        import org.jfree.util.ObjectUtilities;
065:        import org.jfree.util.PaintUtilities;
066:        import org.jfree.util.PublicCloneable;
067:
068:        /**
069:         * A box annotation that can be placed on an {@link XYPlot}.  The 
070:         * box coordinates are specified in data space.
071:         */
072:        public class XYBoxAnnotation extends AbstractXYAnnotation implements 
073:                Cloneable, PublicCloneable, Serializable {
074:
075:            /** For serialization. */
076:            private static final long serialVersionUID = 6764703772526757457L;
077:
078:            /** The lower x-coordinate. */
079:            private double x0;
080:
081:            /** The lower y-coordinate. */
082:            private double y0;
083:
084:            /** The upper x-coordinate. */
085:            private double x1;
086:
087:            /** The upper y-coordinate. */
088:            private double y1;
089:
090:            /** The stroke used to draw the box outline. */
091:            private transient Stroke stroke;
092:
093:            /** The paint used to draw the box outline. */
094:            private transient Paint outlinePaint;
095:
096:            /** The paint used to fill the box. */
097:            private transient Paint fillPaint;
098:
099:            /**
100:             * Creates a new annotation (where, by default, the box is drawn 
101:             * with a black outline).
102:             * 
103:             * @param x0  the lower x-coordinate of the box (in data space).
104:             * @param y0  the lower y-coordinate of the box (in data space).
105:             * @param x1  the upper x-coordinate of the box (in data space).
106:             * @param y1  the upper y-coordinate of the box (in data space).
107:             */
108:            public XYBoxAnnotation(double x0, double y0, double x1, double y1) {
109:                this (x0, y0, x1, y1, new BasicStroke(1.0f), Color.black);
110:            }
111:
112:            /**
113:             * Creates a new annotation where the box is drawn as an outline using
114:             * the specified <code>stroke</code> and <code>outlinePaint</code>.
115:             *
116:             * @param x0  the lower x-coordinate of the box (in data space).
117:             * @param y0  the lower y-coordinate of the box (in data space).
118:             * @param x1  the upper x-coordinate of the box (in data space).
119:             * @param y1  the upper y-coordinate of the box (in data space).
120:             * @param stroke  the shape stroke (<code>null</code> permitted).
121:             * @param outlinePaint  the shape color (<code>null</code> permitted).
122:             */
123:            public XYBoxAnnotation(double x0, double y0, double x1, double y1,
124:                    Stroke stroke, Paint outlinePaint) {
125:                this (x0, y0, x1, y1, stroke, outlinePaint, null);
126:            }
127:
128:            /**
129:             * Creates a new annotation.
130:             *
131:             * @param x0  the lower x-coordinate of the box (in data space).
132:             * @param y0  the lower y-coordinate of the box (in data space).
133:             * @param x1  the upper x-coordinate of the box (in data space).
134:             * @param y1  the upper y-coordinate of the box (in data space).
135:             * @param stroke  the shape stroke (<code>null</code> permitted).
136:             * @param outlinePaint  the shape color (<code>null</code> permitted).
137:             * @param fillPaint  the paint used to fill the shape (<code>null</code> 
138:             *                   permitted).
139:             */
140:            public XYBoxAnnotation(double x0, double y0, double x1, double y1,
141:                    Stroke stroke, Paint outlinePaint, Paint fillPaint) {
142:                this .x0 = x0;
143:                this .y0 = y0;
144:                this .x1 = x1;
145:                this .y1 = y1;
146:                this .stroke = stroke;
147:                this .outlinePaint = outlinePaint;
148:                this .fillPaint = fillPaint;
149:            }
150:
151:            /**
152:             * Draws the annotation.  This method is usually called by the 
153:             * {@link XYPlot} class, you shouldn't need to call it directly.
154:             *
155:             * @param g2  the graphics device.
156:             * @param plot  the plot.
157:             * @param dataArea  the data area.
158:             * @param domainAxis  the domain axis.
159:             * @param rangeAxis  the range axis.
160:             * @param rendererIndex  the renderer index.
161:             * @param info  the plot rendering info.
162:             */
163:            public void draw(Graphics2D g2, XYPlot plot, Rectangle2D dataArea,
164:                    ValueAxis domainAxis, ValueAxis rangeAxis,
165:                    int rendererIndex, PlotRenderingInfo info) {
166:
167:                PlotOrientation orientation = plot.getOrientation();
168:                RectangleEdge domainEdge = Plot.resolveDomainAxisLocation(plot
169:                        .getDomainAxisLocation(), orientation);
170:                RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation(plot
171:                        .getRangeAxisLocation(), orientation);
172:
173:                double transX0 = domainAxis.valueToJava2D(this .x0, dataArea,
174:                        domainEdge);
175:                double transY0 = rangeAxis.valueToJava2D(this .y0, dataArea,
176:                        rangeEdge);
177:                double transX1 = domainAxis.valueToJava2D(this .x1, dataArea,
178:                        domainEdge);
179:                double transY1 = rangeAxis.valueToJava2D(this .y1, dataArea,
180:                        rangeEdge);
181:
182:                Rectangle2D box = null;
183:                if (orientation == PlotOrientation.HORIZONTAL) {
184:                    box = new Rectangle2D.Double(transY0, transX1, transY1
185:                            - transY0, transX0 - transX1);
186:                } else if (orientation == PlotOrientation.VERTICAL) {
187:                    box = new Rectangle2D.Double(transX0, transY1, transX1
188:                            - transX0, transY0 - transY1);
189:                }
190:
191:                if (this .fillPaint != null) {
192:                    g2.setPaint(this .fillPaint);
193:                    g2.fill(box);
194:                }
195:
196:                if (this .stroke != null && this .outlinePaint != null) {
197:                    g2.setPaint(this .outlinePaint);
198:                    g2.setStroke(this .stroke);
199:                    g2.draw(box);
200:                }
201:                addEntity(info, box, rendererIndex, getToolTipText(), getURL());
202:
203:            }
204:
205:            /**
206:             * Tests this annotation for equality with an arbitrary object.
207:             * 
208:             * @param obj  the object (<code>null</code> permitted).
209:             * 
210:             * @return A boolean.
211:             */
212:            public boolean equals(Object obj) {
213:                if (obj == this ) {
214:                    return true;
215:                }
216:                // now try to reject equality
217:                if (!super .equals(obj)) {
218:                    return false;
219:                }
220:                if (!(obj instanceof  XYBoxAnnotation)) {
221:                    return false;
222:                }
223:                XYBoxAnnotation that = (XYBoxAnnotation) obj;
224:                if (!(this .x0 == that.x0)) {
225:                    return false;
226:                }
227:                if (!(this .y0 == that.y0)) {
228:                    return false;
229:                }
230:                if (!(this .x1 == that.x1)) {
231:                    return false;
232:                }
233:                if (!(this .y1 == that.y1)) {
234:                    return false;
235:                }
236:                if (!ObjectUtilities.equal(this .stroke, that.stroke)) {
237:                    return false;
238:                }
239:                if (!PaintUtilities.equal(this .outlinePaint, that.outlinePaint)) {
240:                    return false;
241:                }
242:                if (!PaintUtilities.equal(this .fillPaint, that.fillPaint)) {
243:                    return false;
244:                }
245:                // seem to be the same
246:                return true;
247:            }
248:
249:            /**
250:             * Returns a hash code.
251:             * 
252:             * @return A hash code.
253:             */
254:            public int hashCode() {
255:                int result;
256:                long temp;
257:                temp = Double.doubleToLongBits(this .x0);
258:                result = (int) (temp ^ (temp >>> 32));
259:                temp = Double.doubleToLongBits(this .x1);
260:                result = 29 * result + (int) (temp ^ (temp >>> 32));
261:                temp = Double.doubleToLongBits(this .y0);
262:                result = 29 * result + (int) (temp ^ (temp >>> 32));
263:                temp = Double.doubleToLongBits(this .y1);
264:                result = 29 * result + (int) (temp ^ (temp >>> 32));
265:                return result;
266:            }
267:
268:            /**
269:             * Returns a clone.
270:             * 
271:             * @return A clone.
272:             * 
273:             * @throws CloneNotSupportedException not thrown by this class, but may be
274:             *                                    by subclasses.
275:             */
276:            public Object clone() throws CloneNotSupportedException {
277:                return super .clone();
278:            }
279:
280:            /**
281:             * Provides serialization support.
282:             *
283:             * @param stream  the output stream (<code>null</code> not permitted).
284:             *
285:             * @throws IOException if there is an I/O error.
286:             */
287:            private void writeObject(ObjectOutputStream stream)
288:                    throws IOException {
289:                stream.defaultWriteObject();
290:                SerialUtilities.writeStroke(this .stroke, stream);
291:                SerialUtilities.writePaint(this .outlinePaint, stream);
292:                SerialUtilities.writePaint(this .fillPaint, stream);
293:            }
294:
295:            /**
296:             * Provides serialization support.
297:             *
298:             * @param stream  the input stream (<code>null</code> not permitted).
299:             *
300:             * @throws IOException  if there is an I/O error.
301:             * @throws ClassNotFoundException  if there is a classpath problem.
302:             */
303:            private void readObject(ObjectInputStream stream)
304:                    throws IOException, ClassNotFoundException {
305:
306:                stream.defaultReadObject();
307:                this.stroke = SerialUtilities.readStroke(stream);
308:                this.outlinePaint = SerialUtilities.readPaint(stream);
309:                this.fillPaint = SerialUtilities.readPaint(stream);
310:            }
311:
312:        }
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