Source Code Cross Referenced for XYAreaRenderer2.java in  » Chart » jfreechart » org » jfree » chart » renderer » xy » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » Chart » jfreechart » org.jfree.chart.renderer.xy 
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:         * XYAreaRenderer2.java
029:         * --------------------
030:         * (C) Copyright 2004-2007, by Hari and Contributors.
031:         *
032:         * Original Author:  Hari (ourhari@hotmail.com);
033:         * Contributor(s):   David Gilbert (for Object Refinery Limited);
034:         *                   Richard Atkinson;
035:         *                   Christian W. Zuckschwerdt;
036:         *
037:         * $Id: XYAreaRenderer2.java,v 1.12.2.10 2007/05/18 10:28:31 mungady Exp $
038:         *
039:         * Changes:
040:         * --------
041:         * 03-Apr-2002 : Version 1, contributed by Hari.  This class is based on the 
042:         *               StandardXYItemRenderer class (DG);
043:         * 09-Apr-2002 : Removed the translated zero from the drawItem method - 
044:         *               overridden the initialise() method to calculate it (DG);
045:         * 30-May-2002 : Added tool tip generator to constructor to match super 
046:         *               class (DG);
047:         * 25-Jun-2002 : Removed unnecessary local variable (DG);
048:         * 05-Aug-2002 : Small modification to drawItem method to support URLs for 
049:         *               HTML image maps (RA);
050:         * 01-Oct-2002 : Fixed errors reported by Checkstyle (DG);
051:         * 07-Nov-2002 : Renamed AreaXYItemRenderer --> XYAreaRenderer (DG);
052:         * 25-Mar-2003 : Implemented Serializable (DG);
053:         * 01-May-2003 : Modified drawItem() method signature (DG);
054:         * 27-Jul-2003 : Made line and polygon properties protected rather than 
055:         *               private (RA);
056:         * 30-Jul-2003 : Modified entity constructor (CZ);
057:         * 20-Aug-2003 : Implemented Cloneable and PublicCloneable (DG);
058:         * 16-Sep-2003 : Changed ChartRenderingInfo --> PlotRenderingInfo (DG);
059:         * 07-Oct-2003 : Added renderer state (DG);
060:         * 08-Dec-2003 : Modified hotspot for chart entity (DG);
061:         * 10-Feb-2004 : Changed the drawItem() method to make cut-and-paste 
062:         *               overriding easier.  Also moved state class into this 
063:         *               class (DG);
064:         * 25-Feb-2004 : Replaced CrosshairInfo with CrosshairState.  Renamed 
065:         *               XYToolTipGenerator --> XYItemLabelGenerator (DG);
066:         * 15-Jul-2004 : Switched getX() with getXValue() and getY() with 
067:         *               getYValue() (DG);
068:         * 11-Nov-2004 : Now uses ShapeUtilities to translate shapes (DG);
069:         * 19-Jan-2005 : Now accesses only primitives from the dataset (DG);
070:         * 21-Mar-2005 : Override getLegendItem() (DG);
071:         * 20-Apr-2005 : Use generators for legend tooltips and URLs (DG);
072:         * ------------- JFREECHART 1.0.x ---------------------------------------------
073:         * 30-Nov-2006 : Fixed equals() and clone() implementations (DG);
074:         * 06-Feb-2007 : Fixed bug 1086307, crosshairs with multiple axes (DG);
075:         * 20-Apr-2007 : Updated getLegendItem() and drawItem() for renderer 
076:         *               change (DG); 
077:         * 17-May-2007 : Set datasetIndex and seriesIndex in getLegendItem() (DG);
078:         * 18-May-2007 : Set dataset and seriesKey for LegendItem (DG);
079:         *
080:         */
081:
082:        package org.jfree.chart.renderer.xy;
083:
084:        import java.awt.Graphics2D;
085:        import java.awt.Paint;
086:        import java.awt.Polygon;
087:        import java.awt.Shape;
088:        import java.awt.Stroke;
089:        import java.awt.geom.GeneralPath;
090:        import java.awt.geom.Rectangle2D;
091:        import java.io.IOException;
092:        import java.io.ObjectInputStream;
093:        import java.io.ObjectOutputStream;
094:        import java.io.Serializable;
095:
096:        import org.jfree.chart.LegendItem;
097:        import org.jfree.chart.axis.ValueAxis;
098:        import org.jfree.chart.entity.EntityCollection;
099:        import org.jfree.chart.entity.XYItemEntity;
100:        import org.jfree.chart.event.RendererChangeEvent;
101:        import org.jfree.chart.labels.XYSeriesLabelGenerator;
102:        import org.jfree.chart.labels.XYToolTipGenerator;
103:        import org.jfree.chart.plot.CrosshairState;
104:        import org.jfree.chart.plot.PlotOrientation;
105:        import org.jfree.chart.plot.PlotRenderingInfo;
106:        import org.jfree.chart.plot.XYPlot;
107:        import org.jfree.chart.urls.XYURLGenerator;
108:        import org.jfree.data.xy.XYDataset;
109:        import org.jfree.io.SerialUtilities;
110:        import org.jfree.util.PublicCloneable;
111:        import org.jfree.util.ShapeUtilities;
112:
113:        /**
114:         * Area item renderer for an {@link XYPlot}.  
115:         */
116:        public class XYAreaRenderer2 extends AbstractXYItemRenderer implements 
117:                XYItemRenderer, Cloneable, PublicCloneable, Serializable {
118:
119:            /** For serialization. */
120:            private static final long serialVersionUID = -7378069681579984133L;
121:
122:            /** A flag that controls whether or not the outline is shown. */
123:            private boolean showOutline;
124:
125:            /** 
126:             * The shape used to represent an area in each legend item (this should 
127:             * never be <code>null</code>). 
128:             */
129:            private transient Shape legendArea;
130:
131:            /**
132:             * Constructs a new renderer.
133:             */
134:            public XYAreaRenderer2() {
135:                this (null, null);
136:            }
137:
138:            /**
139:             * Constructs a new renderer.
140:             *
141:             * @param labelGenerator  the tool tip generator to use.  <code>null</code> 
142:             *                        is none.
143:             * @param urlGenerator  the URL generator (null permitted).
144:             */
145:            public XYAreaRenderer2(XYToolTipGenerator labelGenerator,
146:                    XYURLGenerator urlGenerator) {
147:                super ();
148:                this .showOutline = false;
149:                setBaseToolTipGenerator(labelGenerator);
150:                setURLGenerator(urlGenerator);
151:                GeneralPath area = new GeneralPath();
152:                area.moveTo(0.0f, -4.0f);
153:                area.lineTo(3.0f, -2.0f);
154:                area.lineTo(4.0f, 4.0f);
155:                area.lineTo(-4.0f, 4.0f);
156:                area.lineTo(-3.0f, -2.0f);
157:                area.closePath();
158:                this .legendArea = area;
159:            }
160:
161:            /**
162:             * Returns a flag that controls whether or not outlines of the areas are 
163:             * drawn.
164:             *
165:             * @return The flag.
166:             * 
167:             * @see #setOutline(boolean)
168:             */
169:            public boolean isOutline() {
170:                return this .showOutline;
171:            }
172:
173:            /**
174:             * Sets a flag that controls whether or not outlines of the areas are 
175:             * drawn, and sends a {@link RendererChangeEvent} to all registered 
176:             * listeners.
177:             *
178:             * @param show  the flag.
179:             * 
180:             * @see #isOutline()
181:             */
182:            public void setOutline(boolean show) {
183:                this .showOutline = show;
184:                notifyListeners(new RendererChangeEvent(this ));
185:            }
186:
187:            /**
188:             * This method should not be used.
189:             *
190:             * @return <code>false</code> always.
191:             * 
192:             * @deprecated This method was included in the API by mistake and serves
193:             *     no useful purpose.  It has always returned <code>false</code>.
194:             *   
195:             */
196:            public boolean getPlotLines() {
197:                return false;
198:            }
199:
200:            /**
201:             * Returns the shape used to represent an area in the legend.
202:             * 
203:             * @return The legend area (never <code>null</code>).
204:             * 
205:             * @see #setLegendArea(Shape)
206:             */
207:            public Shape getLegendArea() {
208:                return this .legendArea;
209:            }
210:
211:            /**
212:             * Sets the shape used as an area in each legend item and sends a 
213:             * {@link RendererChangeEvent} to all registered listeners.
214:             * 
215:             * @param area  the area (<code>null</code> not permitted).
216:             * 
217:             * @see #getLegendArea()
218:             */
219:            public void setLegendArea(Shape area) {
220:                if (area == null) {
221:                    throw new IllegalArgumentException("Null 'area' argument.");
222:                }
223:                this .legendArea = area;
224:                notifyListeners(new RendererChangeEvent(this ));
225:            }
226:
227:            /**
228:             * Returns a default legend item for the specified series.  Subclasses 
229:             * should override this method to generate customised items.
230:             *
231:             * @param datasetIndex  the dataset index (zero-based).
232:             * @param series  the series index (zero-based).
233:             *
234:             * @return A legend item for the series.
235:             */
236:            public LegendItem getLegendItem(int datasetIndex, int series) {
237:                LegendItem result = null;
238:                XYPlot xyplot = getPlot();
239:                if (xyplot != null) {
240:                    XYDataset dataset = xyplot.getDataset(datasetIndex);
241:                    if (dataset != null) {
242:                        XYSeriesLabelGenerator lg = getLegendItemLabelGenerator();
243:                        String label = lg.generateLabel(dataset, series);
244:                        String description = label;
245:                        String toolTipText = null;
246:                        if (getLegendItemToolTipGenerator() != null) {
247:                            toolTipText = getLegendItemToolTipGenerator()
248:                                    .generateLabel(dataset, series);
249:                        }
250:                        String urlText = null;
251:                        if (getLegendItemURLGenerator() != null) {
252:                            urlText = getLegendItemURLGenerator()
253:                                    .generateLabel(dataset, series);
254:                        }
255:                        Paint paint = lookupSeriesPaint(series);
256:                        result = new LegendItem(label, description,
257:                                toolTipText, urlText, this .legendArea, paint);
258:                        result.setDataset(dataset);
259:                        result.setDatasetIndex(datasetIndex);
260:                        result.setSeriesKey(dataset.getSeriesKey(series));
261:                        result.setSeriesIndex(series);
262:                    }
263:                }
264:                return result;
265:            }
266:
267:            /**
268:             * Draws the visual representation of a single data item.
269:             *
270:             * @param g2  the graphics device.
271:             * @param state  the renderer state.
272:             * @param dataArea  the area within which the data is being drawn.
273:             * @param info  collects information about the drawing.
274:             * @param plot  the plot (can be used to obtain standard color 
275:             *              information etc).
276:             * @param domainAxis  the domain axis.
277:             * @param rangeAxis  the range axis.
278:             * @param dataset  the dataset.
279:             * @param series  the series index (zero-based).
280:             * @param item  the item index (zero-based).
281:             * @param crosshairState  crosshair information for the plot 
282:             *                        (<code>null</code> permitted).
283:             * @param pass  the pass index.
284:             */
285:            public void drawItem(Graphics2D g2, XYItemRendererState state,
286:                    Rectangle2D dataArea, PlotRenderingInfo info, XYPlot plot,
287:                    ValueAxis domainAxis, ValueAxis rangeAxis,
288:                    XYDataset dataset, int series, int item,
289:                    CrosshairState crosshairState, int pass) {
290:
291:                if (!getItemVisible(series, item)) {
292:                    return;
293:                }
294:                // get the data point...
295:                double x1 = dataset.getXValue(series, item);
296:                double y1 = dataset.getYValue(series, item);
297:                if (Double.isNaN(y1)) {
298:                    y1 = 0.0;
299:                }
300:
301:                double transX1 = domainAxis.valueToJava2D(x1, dataArea, plot
302:                        .getDomainAxisEdge());
303:                double transY1 = rangeAxis.valueToJava2D(y1, dataArea, plot
304:                        .getRangeAxisEdge());
305:
306:                // get the previous point and the next point so we can calculate a 
307:                // "hot spot" for the area (used by the chart entity)...
308:                double x0 = dataset.getXValue(series, Math.max(item - 1, 0));
309:                double y0 = dataset.getYValue(series, Math.max(item - 1, 0));
310:                if (Double.isNaN(y0)) {
311:                    y0 = 0.0;
312:                }
313:                double transX0 = domainAxis.valueToJava2D(x0, dataArea, plot
314:                        .getDomainAxisEdge());
315:                double transY0 = rangeAxis.valueToJava2D(y0, dataArea, plot
316:                        .getRangeAxisEdge());
317:
318:                int itemCount = dataset.getItemCount(series);
319:                double x2 = dataset.getXValue(series, Math.min(item + 1,
320:                        itemCount - 1));
321:                double y2 = dataset.getYValue(series, Math.min(item + 1,
322:                        itemCount - 1));
323:                if (Double.isNaN(y2)) {
324:                    y2 = 0.0;
325:                }
326:                double transX2 = domainAxis.valueToJava2D(x2, dataArea, plot
327:                        .getDomainAxisEdge());
328:                double transY2 = rangeAxis.valueToJava2D(y2, dataArea, plot
329:                        .getRangeAxisEdge());
330:
331:                double transZero = rangeAxis.valueToJava2D(0.0, dataArea, plot
332:                        .getRangeAxisEdge());
333:                Polygon hotspot = null;
334:                if (plot.getOrientation() == PlotOrientation.HORIZONTAL) {
335:                    hotspot = new Polygon();
336:                    hotspot.addPoint((int) transZero,
337:                            (int) ((transX0 + transX1) / 2.0));
338:                    hotspot.addPoint((int) ((transY0 + transY1) / 2.0),
339:                            (int) ((transX0 + transX1) / 2.0));
340:                    hotspot.addPoint((int) transY1, (int) transX1);
341:                    hotspot.addPoint((int) ((transY1 + transY2) / 2.0),
342:                            (int) ((transX1 + transX2) / 2.0));
343:                    hotspot.addPoint((int) transZero,
344:                            (int) ((transX1 + transX2) / 2.0));
345:                } else { // vertical orientation
346:                    hotspot = new Polygon();
347:                    hotspot.addPoint((int) ((transX0 + transX1) / 2.0),
348:                            (int) transZero);
349:                    hotspot.addPoint((int) ((transX0 + transX1) / 2.0),
350:                            (int) ((transY0 + transY1) / 2.0));
351:                    hotspot.addPoint((int) transX1, (int) transY1);
352:                    hotspot.addPoint((int) ((transX1 + transX2) / 2.0),
353:                            (int) ((transY1 + transY2) / 2.0));
354:                    hotspot.addPoint((int) ((transX1 + transX2) / 2.0),
355:                            (int) transZero);
356:                }
357:
358:                PlotOrientation orientation = plot.getOrientation();
359:                Paint paint = getItemPaint(series, item);
360:                Stroke stroke = getItemStroke(series, item);
361:                g2.setPaint(paint);
362:                g2.setStroke(stroke);
363:
364:                if (getPlotLines()) {
365:                    if (item > 0) {
366:                        if (plot.getOrientation() == PlotOrientation.VERTICAL) {
367:                            state.workingLine.setLine(transX0, transY0,
368:                                    transX1, transY1);
369:                        } else if (plot.getOrientation() == PlotOrientation.HORIZONTAL) {
370:                            state.workingLine.setLine(transY0, transX0,
371:                                    transY1, transX1);
372:                        }
373:                        g2.draw(state.workingLine);
374:                    }
375:                }
376:
377:                // Check if the item is the last item for the series.
378:                // and number of items > 0.  We can't draw an area for a single point.
379:                g2.fill(hotspot);
380:
381:                // draw an outline around the Area.
382:                if (isOutline()) {
383:                    g2.setStroke(lookupSeriesOutlineStroke(series));
384:                    g2.setPaint(lookupSeriesOutlinePaint(series));
385:                    g2.draw(hotspot);
386:                }
387:                int domainAxisIndex = plot.getDomainAxisIndex(domainAxis);
388:                int rangeAxisIndex = plot.getRangeAxisIndex(rangeAxis);
389:                updateCrosshairValues(crosshairState, x1, y1, domainAxisIndex,
390:                        rangeAxisIndex, transX1, transY1, orientation);
391:
392:                // collect entity and tool tip information...
393:                if (state.getInfo() != null) {
394:                    EntityCollection entities = state.getEntityCollection();
395:                    if (entities != null && hotspot != null) {
396:                        String tip = null;
397:                        XYToolTipGenerator generator = getToolTipGenerator(
398:                                series, item);
399:                        if (generator != null) {
400:                            tip = generator.generateToolTip(dataset, series,
401:                                    item);
402:                        }
403:                        String url = null;
404:                        if (getURLGenerator() != null) {
405:                            url = getURLGenerator().generateURL(dataset,
406:                                    series, item);
407:                        }
408:                        XYItemEntity entity = new XYItemEntity(hotspot,
409:                                dataset, series, item, tip, url);
410:                        entities.add(entity);
411:                    }
412:                }
413:
414:            }
415:
416:            /**
417:             * Tests this renderer for equality with an arbitrary object.
418:             * 
419:             * @param obj  the object (<code>null</code> not permitted).
420:             * 
421:             * @return A boolean.
422:             */
423:            public boolean equals(Object obj) {
424:                if (obj == this ) {
425:                    return true;
426:                }
427:                if (!(obj instanceof  XYAreaRenderer2)) {
428:                    return false;
429:                }
430:                XYAreaRenderer2 that = (XYAreaRenderer2) obj;
431:                if (this .showOutline != that.showOutline) {
432:                    return false;
433:                }
434:                if (!ShapeUtilities.equal(this .legendArea, that.legendArea)) {
435:                    return false;
436:                }
437:                return super .equals(obj);
438:            }
439:
440:            /**
441:             * Returns a clone of the renderer.
442:             * 
443:             * @return A clone.
444:             * 
445:             * @throws CloneNotSupportedException  if the renderer cannot be cloned.
446:             */
447:            public Object clone() throws CloneNotSupportedException {
448:                XYAreaRenderer2 clone = (XYAreaRenderer2) super .clone();
449:                clone.legendArea = ShapeUtilities.clone(this .legendArea);
450:                return clone;
451:            }
452:
453:            /**
454:             * Provides serialization support.
455:             *
456:             * @param stream  the input stream.
457:             *
458:             * @throws IOException  if there is an I/O error.
459:             * @throws ClassNotFoundException  if there is a classpath problem.
460:             */
461:            private void readObject(ObjectInputStream stream)
462:                    throws IOException, ClassNotFoundException {
463:                stream.defaultReadObject();
464:                this .legendArea = SerialUtilities.readShape(stream);
465:            }
466:
467:            /**
468:             * Provides serialization support.
469:             *
470:             * @param stream  the output stream.
471:             *
472:             * @throws IOException  if there is an I/O error.
473:             */
474:            private void writeObject(ObjectOutputStream stream)
475:                    throws IOException {
476:                stream.defaultWriteObject();
477:                SerialUtilities.writeShape(this.legendArea, stream);
478:            }
479:
480:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.