Source Code Cross Referenced for XYTitleAnnotation.java in  » Chart » jfreechart » org » jfree » experimental » 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.experimental.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 2000-2007, 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:         * XYTitleAnnotation.java
029:         * ----------------------
030:         * (C) Copyright 2007, by Object Refinery Limited and Contributors.
031:         *
032:         * Original Author:  David Gilbert (for Object Refinery Limited);
033:         * Contributor(s):   -;
034:         *
035:         * $Id: XYTitleAnnotation.java,v 1.1.2.2 2007/04/30 20:54:34 mungady Exp $
036:         *
037:         * Changes:
038:         * --------
039:         * 02-Feb-2007 : Version 1 (DG);
040:         * 30-Apr-2007 : Fixed equals() method (DG);
041:         * 
042:         */
043:
044:        package org.jfree.experimental.chart.annotations;
045:
046:        import java.awt.Graphics2D;
047:        import java.awt.geom.Point2D;
048:        import java.awt.geom.Rectangle2D;
049:        import java.io.Serializable;
050:
051:        import org.jfree.chart.annotations.AbstractXYAnnotation;
052:        import org.jfree.chart.axis.AxisLocation;
053:        import org.jfree.chart.axis.ValueAxis;
054:        import org.jfree.chart.block.BlockParams;
055:        import org.jfree.chart.block.EntityBlockResult;
056:        import org.jfree.chart.block.RectangleConstraint;
057:        import org.jfree.chart.plot.Plot;
058:        import org.jfree.chart.plot.PlotOrientation;
059:        import org.jfree.chart.plot.PlotRenderingInfo;
060:        import org.jfree.chart.plot.XYPlot;
061:        import org.jfree.chart.title.Title;
062:        import org.jfree.data.Range;
063:        import org.jfree.experimental.chart.util.XYCoordinateType;
064:        import org.jfree.ui.RectangleAnchor;
065:        import org.jfree.ui.RectangleEdge;
066:        import org.jfree.ui.Size2D;
067:        import org.jfree.util.ObjectUtilities;
068:        import org.jfree.util.PublicCloneable;
069:
070:        /**
071:         * An annotation that allows any {@link Title} to be placed at a location on 
072:         * an {@link XYPlot}.
073:         */
074:        public class XYTitleAnnotation extends AbstractXYAnnotation implements 
075:                Cloneable, PublicCloneable, Serializable {
076:
077:            /** For serialization. */
078:            private static final long serialVersionUID = -4364694501921559958L;
079:
080:            /** The coordinate type. */
081:            private XYCoordinateType coordinateType;
082:
083:            /** The x-coordinate (in data space). */
084:            private double x;
085:
086:            /** The y-coordinate (in data space). */
087:            private double y;
088:
089:            private double maxWidth;
090:
091:            private double maxHeight;
092:
093:            /** The title. */
094:            private Title title;
095:
096:            /** 
097:             * The title anchor point. 
098:             */
099:            private RectangleAnchor anchor;
100:
101:            /**
102:             * Creates a new annotation to be displayed at the specified (x, y) 
103:             * location.
104:             *
105:             * @param x  the x-coordinate (in data space).
106:             * @param y  the y-coordinate (in data space).
107:             * @param title  the title (<code>null</code> not permitted).
108:             */
109:            public XYTitleAnnotation(double x, double y, Title title) {
110:                this (x, y, title, RectangleAnchor.CENTER);
111:            }
112:
113:            /**
114:             * Creates a new annotation to be displayed at the specified (x, y) 
115:             * location.
116:             *
117:             * @param x  the x-coordinate (in data space).
118:             * @param y  the y-coordinate (in data space).
119:             * @param title  the title (<code>null</code> not permitted).
120:             * @param anchor  the title anchor (<code>null</code> not permitted).
121:             */
122:            public XYTitleAnnotation(double x, double y, Title title,
123:                    RectangleAnchor anchor) {
124:                if (title == null) {
125:                    throw new IllegalArgumentException("Null 'title' argument.");
126:                }
127:                if (anchor == null) {
128:                    throw new IllegalArgumentException(
129:                            "Null 'anchor' argument.");
130:                }
131:                this .coordinateType = XYCoordinateType.RELATIVE;
132:                this .x = x;
133:                this .y = y;
134:                this .maxWidth = 0.0;
135:                this .maxHeight = 0.0;
136:                this .title = title;
137:                this .anchor = anchor;
138:            }
139:
140:            /**
141:             * Returns the coordinate type (set in the constructor).
142:             * 
143:             * @return The coordinate type (never <code>null</code>).
144:             */
145:            public XYCoordinateType getCoordinateType() {
146:                return this .coordinateType;
147:            }
148:
149:            /**
150:             * Returns the x-coordinate for the annotation.
151:             * 
152:             * @return The x-coordinate.
153:             */
154:            public double getX() {
155:                return this .x;
156:            }
157:
158:            /**
159:             * Returns the y-coordinate for the annotation.
160:             * 
161:             * @return The y-coordinate.
162:             */
163:            public double getY() {
164:                return this .y;
165:            }
166:
167:            /**
168:             * Returns the title for the annotation.
169:             * 
170:             * @return The title.
171:             */
172:            public Title getTitle() {
173:                return this .title;
174:            }
175:
176:            /**
177:             * Returns the title anchor for the annotation.
178:             * 
179:             * @return The title anchor.
180:             */
181:            public RectangleAnchor getTitleAnchor() {
182:                return this .anchor;
183:            }
184:
185:            /**
186:             * Returns the maximum width.
187:             * 
188:             * @return The maximum width.
189:             */
190:            public double getMaxWidth() {
191:                return this .maxWidth;
192:            }
193:
194:            /**
195:             * Sets the maximum width.
196:             * 
197:             * @param max  the maximum width (0.0 or less means no maximum).
198:             */
199:            public void setMaxWidth(double max) {
200:                this .maxWidth = max;
201:            }
202:
203:            /**
204:             * Returns the maximum height.
205:             * 
206:             * @return The maximum height.
207:             */
208:            public double getMaxHeight() {
209:                return this .maxHeight;
210:            }
211:
212:            /**
213:             * Sets the maximum height.
214:             * 
215:             * @param max  the maximum height.
216:             */
217:            public void setMaxHeight(double max) {
218:                this .maxHeight = max;
219:            }
220:
221:            /**
222:             * Draws the annotation.  This method is called by the drawing code in the 
223:             * {@link XYPlot} class, you don't normally need to call this method 
224:             * directly.
225:             *
226:             * @param g2  the graphics device.
227:             * @param plot  the plot.
228:             * @param dataArea  the data area.
229:             * @param domainAxis  the domain axis.
230:             * @param rangeAxis  the range axis.
231:             * @param rendererIndex  the renderer index.
232:             * @param info  if supplied, this info object will be populated with
233:             *              entity information.
234:             */
235:            public void draw(Graphics2D g2, XYPlot plot, Rectangle2D dataArea,
236:                    ValueAxis domainAxis, ValueAxis rangeAxis,
237:                    int rendererIndex, PlotRenderingInfo info) {
238:
239:                PlotOrientation orientation = plot.getOrientation();
240:                AxisLocation domainAxisLocation = plot.getDomainAxisLocation();
241:                AxisLocation rangeAxisLocation = plot.getRangeAxisLocation();
242:                RectangleEdge domainEdge = Plot.resolveDomainAxisLocation(
243:                        domainAxisLocation, orientation);
244:                RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation(
245:                        rangeAxisLocation, orientation);
246:                Range xRange = domainAxis.getRange();
247:                Range yRange = rangeAxis.getRange();
248:                double anchorX = 0.0;
249:                double anchorY = 0.0;
250:                if (this .coordinateType == XYCoordinateType.RELATIVE) {
251:                    anchorX = xRange.getLowerBound()
252:                            + (this .x * xRange.getLength());
253:                    anchorY = yRange.getLowerBound()
254:                            + (this .y * yRange.getLength());
255:                } else {
256:                    anchorX = domainAxis.valueToJava2D(this .x, dataArea,
257:                            domainEdge);
258:                    anchorY = rangeAxis.valueToJava2D(this .y, dataArea,
259:                            rangeEdge);
260:                }
261:
262:                float j2DX = (float) domainAxis.valueToJava2D(anchorX,
263:                        dataArea, domainEdge);
264:                float j2DY = (float) rangeAxis.valueToJava2D(anchorY, dataArea,
265:                        rangeEdge);
266:                float xx = 0.0f;
267:                float yy = 0.0f;
268:                if (orientation == PlotOrientation.HORIZONTAL) {
269:                    xx = j2DY;
270:                    yy = j2DX;
271:                } else if (orientation == PlotOrientation.VERTICAL) {
272:                    xx = j2DX;
273:                    yy = j2DY;
274:                }
275:
276:                double maxW = dataArea.getWidth();
277:                double maxH = dataArea.getHeight();
278:                if (this .coordinateType == XYCoordinateType.RELATIVE) {
279:                    if (this .maxWidth > 0.0) {
280:                        maxW = maxW * this .maxWidth;
281:                    }
282:                    if (this .maxHeight > 0.0) {
283:                        maxH = maxH * this .maxHeight;
284:                    }
285:                }
286:                if (this .coordinateType == XYCoordinateType.DATA) {
287:                    maxW = this .maxWidth;
288:                    maxH = this .maxHeight;
289:                }
290:                RectangleConstraint rc = new RectangleConstraint(new Range(0,
291:                        maxW), new Range(0, maxH));
292:
293:                Size2D size = this .title.arrange(g2, rc);
294:                Rectangle2D titleRect = new Rectangle2D.Double(0, 0,
295:                        size.width, size.height);
296:                Point2D anchorPoint = (Point2D) RectangleAnchor.coordinates(
297:                        titleRect, this .anchor);
298:                xx = xx - (float) anchorPoint.getX();
299:                yy = yy - (float) anchorPoint.getY();
300:                titleRect.setRect(xx, yy, titleRect.getWidth(), titleRect
301:                        .getHeight());
302:                BlockParams p = new BlockParams();
303:                if (info != null) {
304:                    if (info.getOwner().getEntityCollection() != null) {
305:                        p.setGenerateEntities(true);
306:                    }
307:                }
308:                Object result = this .title.draw(g2, titleRect, p);
309:                if (result instanceof  EntityBlockResult) {
310:                    EntityBlockResult ebr = (EntityBlockResult) result;
311:                    info.getOwner().getEntityCollection().addAll(
312:                            ebr.getEntityCollection());
313:                }
314:                String toolTip = getToolTipText();
315:                String url = getURL();
316:                if (toolTip != null || url != null) {
317:                    addEntity(info, new Rectangle2D.Float(xx, yy,
318:                            (float) size.width, (float) size.height),
319:                            rendererIndex, toolTip, url);
320:                }
321:            }
322:
323:            /**
324:             * Tests this object for equality with an arbitrary object.
325:             * 
326:             * @param obj  the object (<code>null</code> permitted).
327:             * 
328:             * @return A boolean.
329:             */
330:            public boolean equals(Object obj) {
331:                if (obj == this ) {
332:                    return true;
333:                }
334:                if (!(obj instanceof  XYTitleAnnotation)) {
335:                    return false;
336:                }
337:                XYTitleAnnotation that = (XYTitleAnnotation) obj;
338:                if (this .coordinateType != that.coordinateType) {
339:                    return false;
340:                }
341:                if (this .x != that.x) {
342:                    return false;
343:                }
344:                if (this .y != that.y) {
345:                    return false;
346:                }
347:                if (this .maxWidth != that.maxWidth) {
348:                    return false;
349:                }
350:                if (this .maxHeight != that.maxHeight) {
351:                    return false;
352:                }
353:                if (!ObjectUtilities.equal(this .title, that.title)) {
354:                    return false;
355:                }
356:                if (!this .anchor.equals(that.anchor)) {
357:                    return false;
358:                }
359:                return super .equals(obj);
360:            }
361:
362:            /**
363:             * Returns a hash code for this object.
364:             * 
365:             * @return A hash code.
366:             */
367:            public int hashCode() {
368:                // FIXME: do better than this
369:                return this .title.hashCode();
370:            }
371:
372:            /**
373:             * Returns a clone of the annotation.
374:             * 
375:             * @return A clone.
376:             * 
377:             * @throws CloneNotSupportedException  if the annotation can't be cloned.
378:             */
379:            public Object clone() throws CloneNotSupportedException {
380:                return super.clone();
381:            }
382:
383:        }
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