|
1
67
68 package org.jfree.chart.renderer.category;
69
70 import java.awt.Graphics2D  ;
71 import java.awt.Paint ;
72 import java.awt.Shape ;
73 import java.awt.Stroke ;
74 import java.awt.geom.GeneralPath ;
75 import java.awt.geom.Rectangle2D ;
76 import java.io.Serializable ;
77
78 import org.jfree.chart.LegendItem;
79 import org.jfree.chart.axis.CategoryAxis;
80 import org.jfree.chart.axis.ValueAxis;
81 import org.jfree.chart.entity.EntityCollection;
82 import org.jfree.chart.event.RendererChangeEvent;
83 import org.jfree.chart.plot.CategoryPlot;
84 import org.jfree.chart.plot.PlotOrientation;
85 import org.jfree.chart.renderer.AreaRendererEndType;
86 import org.jfree.data.category.CategoryDataset;
87 import org.jfree.ui.RectangleEdge;
88 import org.jfree.util.PublicCloneable;
89
90
94 public class AreaRenderer extends AbstractCategoryItemRenderer
95 implements Cloneable , PublicCloneable, Serializable {
96
97
98 private static final long serialVersionUID = -4231878281385812757L;
99
100
101 private AreaRendererEndType endType;
102
103
106 public AreaRenderer() {
107 super();
108 this.endType = AreaRendererEndType.TAPER;
109 }
110
111
119 public AreaRendererEndType getEndType() {
120 return this.endType;
121 }
122
123
131 public void setEndType(AreaRendererEndType type) {
132 if (type == null) {
133 throw new IllegalArgumentException ("Null 'type' argument.");
134 }
135 this.endType = type;
136 notifyListeners(new RendererChangeEvent(this));
137 }
138
139
147 public LegendItem getLegendItem(int datasetIndex, int series) {
148
149 CategoryPlot cp = getPlot();
150 if (cp == null) {
151 return null;
152 }
153
154 CategoryDataset dataset;
155 dataset = cp.getDataset(datasetIndex);
156 String label = getLegendItemLabelGenerator().generateLabel(dataset,
157 series);
158 String description = label;
159 String toolTipText = null;
160 if (getLegendItemToolTipGenerator() != null) {
161 toolTipText = getLegendItemToolTipGenerator().generateLabel(
162 dataset, series);
163 }
164 String urlText = null;
165 if (getLegendItemURLGenerator() != null) {
166 urlText = getLegendItemURLGenerator().generateLabel(dataset,
167 series);
168 }
169 Shape shape = new Rectangle2D.Double (-4.0, -4.0, 8.0, 8.0);
170 Paint paint = getSeriesPaint(series);
171 Paint outlinePaint = getSeriesOutlinePaint(series);
172 Stroke outlineStroke = getSeriesOutlineStroke(series);
173
174 return new LegendItem(label, description, toolTipText, urlText,
175 shape, paint, outlineStroke, outlinePaint);
176
177 }
178
179
193 public void drawItem(Graphics2D g2,
194 CategoryItemRendererState state,
195 Rectangle2D dataArea,
196 CategoryPlot plot,
197 CategoryAxis domainAxis,
198 ValueAxis rangeAxis,
199 CategoryDataset dataset,
200 int row,
201 int column,
202 int pass) {
203
204 Number value = dataset.getValue(row, column);
206 if (value != null) {
207 PlotOrientation orientation = plot.getOrientation();
208 RectangleEdge axisEdge = plot.getDomainAxisEdge();
209 int count = dataset.getColumnCount();
210 float x0 = (float) domainAxis.getCategoryStart(column, count,
211 dataArea, axisEdge);
212 float x1 = (float) domainAxis.getCategoryMiddle(column, count,
213 dataArea, axisEdge);
214 float x2 = (float) domainAxis.getCategoryEnd(column, count,
215 dataArea, axisEdge);
216
217 x0 = Math.round(x0);
218 x1 = Math.round(x1);
219 x2 = Math.round(x2);
220
221 if (this.endType == AreaRendererEndType.TRUNCATE) {
222 if (column == 0) {
223 x0 = x1;
224 }
225 else if (column == getColumnCount() - 1) {
226 x2 = x1;
227 }
228 }
229
230 double yy1 = value.doubleValue();
231
232 double yy0 = 0.0;
233 if (column > 0) {
234 Number n0 = dataset.getValue(row, column - 1);
235 if (n0 != null) {
236 yy0 = (n0.doubleValue() + yy1) / 2.0;
237 }
238 }
239
240 double yy2 = 0.0;
241 if (column < dataset.getColumnCount() - 1) {
242 Number n2 = dataset.getValue(row, column + 1);
243 if (n2 != null) {
244 yy2 = (n2.doubleValue() + yy1) / 2.0;
245 }
246 }
247
248 RectangleEdge edge = plot.getRangeAxisEdge();
249 float y0 = (float) rangeAxis.valueToJava2D(yy0, dataArea, edge);
250 float y1 = (float) rangeAxis.valueToJava2D(yy1, dataArea, edge);
251 float y2 = (float) rangeAxis.valueToJava2D(yy2, dataArea, edge);
252 float yz = (float) rangeAxis.valueToJava2D(0.0, dataArea, edge);
253
254 g2.setPaint(getItemPaint(row, column));
255 g2.setStroke(getItemStroke(row, column));
256
257 GeneralPath area = new GeneralPath ();
258
259 if (orientation == PlotOrientation.VERTICAL) {
260 area.moveTo(x0, yz);
261 area.lineTo(x0, y0);
262 area.lineTo(x1, y1);
263 area.lineTo(x2, y2);
264 area.lineTo(x2, yz);
265 }
266 else if (orientation == PlotOrientation.HORIZONTAL) {
267 area.moveTo(yz, x0);
268 area.lineTo(y0, x0);
269 area.lineTo(y1, x1);
270 area.lineTo(y2, x2);
271 area.lineTo(yz, x2);
272 }
273 area.closePath();
274
275 g2.setPaint(getItemPaint(row, column));
276 g2.fill(area);
277
278 if (isItemLabelVisible(row, column)) {
280 drawItemLabel(g2, orientation, dataset, row, column, x1, y1,
281 (value.doubleValue() < 0.0));
282 }
283
284 EntityCollection entities = state.getEntityCollection();
286 if (entities != null) {
287 addItemEntity(entities, dataset, row, column, area);
288 }
289 }
290
291 }
292
293
300 public boolean equals(Object obj) {
301 if (obj == this) {
302 return true;
303 }
304 if (!(obj instanceof AreaRenderer)) {
305 return false;
306 }
307 AreaRenderer that = (AreaRenderer) obj;
308 if (!this.endType.equals(that.endType)) {
309 return false;
310 }
311 return super.equals(obj);
312 }
313
314
321 public Object clone() throws CloneNotSupportedException {
322 return super.clone();
323 }
324
325 }
326 |
Popular Tags |
Java API By Example, From Geeks To Geeks.