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comparison flys-artifacts/src/main/java/de/intevation/flys/exports/XYChartGenerator.java @ 923:7ca4a287cd0e

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#135 Modified the way to store datasets for different chart axes. flys-artifacts/trunk@2275 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 01 Jul 2011 11:16:11 +0000
parents f3fd8c9b7f51
children f7761914f745
comparison
equal deleted inserted replaced
922:95356252c309 923:7ca4a287cd0e
14 import org.jfree.chart.axis.ValueAxis; 14 import org.jfree.chart.axis.ValueAxis;
15 import org.jfree.chart.plot.PlotOrientation; 15 import org.jfree.chart.plot.PlotOrientation;
16 import org.jfree.chart.plot.XYPlot; 16 import org.jfree.chart.plot.XYPlot;
17 import org.jfree.data.Range; 17 import org.jfree.data.Range;
18 import org.jfree.data.xy.XYDataset; 18 import org.jfree.data.xy.XYDataset;
19 import org.jfree.data.xy.XYSeries;
20 import org.jfree.data.xy.XYSeriesCollection;
19 21
20 import org.jfree.ui.RectangleInsets; 22 import org.jfree.ui.RectangleInsets;
21 23
22 import de.intevation.flys.exports.ChartExportHelper; 24 import de.intevation.flys.exports.ChartExportHelper;
23 25
31 33
32 /** The logger that is used in this generator.*/ 34 /** The logger that is used in this generator.*/
33 private static Logger logger = Logger.getLogger(XYChartGenerator.class); 35 private static Logger logger = Logger.getLogger(XYChartGenerator.class);
34 36
35 37
38 /** SeriesCollection used for the first axis.*/
39 protected XYSeriesCollection first;
40
41 /** SeriesCollection used for the second axis.*/
42 protected XYSeriesCollection second;
43
44
36 public static final Color DEFAULT_GRID_COLOR = Color.GRAY; 45 public static final Color DEFAULT_GRID_COLOR = Color.GRAY;
37 public static final float DEFAULT_GRID_LINE_WIDTH = 0.3f; 46 public static final float DEFAULT_GRID_LINE_WIDTH = 0.3f;
38 47
39 48
40 /** 49 /**
55 * Returns the Y-Axis label of a chart. 64 * Returns the Y-Axis label of a chart.
56 * 65 *
57 * @return the Y-Axis label of a chart. 66 * @return the Y-Axis label of a chart.
58 */ 67 */
59 protected abstract String getYAxisLabel(); 68 protected abstract String getYAxisLabel();
60
61 /**
62 * This method is called to add all datasets of a concrete XYChartGenerator
63 * to the JFreeChart.
64 *
65 * @param chart The JFreeChart object.
66 */
67 protected abstract void addDatasets(JFreeChart chart);
68 69
69 70
70 public void generate() 71 public void generate()
71 throws IOException 72 throws IOException
72 { 73 {
100 chart.setBackgroundPaint(Color.WHITE); 101 chart.setBackgroundPaint(Color.WHITE);
101 chart.getPlot().setBackgroundPaint(Color.WHITE); 102 chart.getPlot().setBackgroundPaint(Color.WHITE);
102 103
103 XYPlot plot = (XYPlot) chart.getPlot(); 104 XYPlot plot = (XYPlot) chart.getPlot();
104 105
105 addDatasets(chart); 106 addDatasets(plot);
106 addSubtitles(chart); 107 addSubtitles(chart);
107 adjustPlot(plot); 108 adjustPlot(plot);
108 adjustAxes(plot); 109 adjustAxes(plot);
110
111 removeEmptyRangeAxes(plot);
112
109 autoZoom(plot); 113 autoZoom(plot);
110 114
111 return chart; 115 return chart;
116 }
117
118
119 protected void addDatasets(XYPlot plot) {
120 if (first != null) {
121 logger.debug("Set the first axis dataset.");
122 plot.setDataset(0, first);
123 }
124 if (second != null) {
125 logger.debug("Set the second axis dataset.");
126 plot.setDataset(1, second);
127 }
128 }
129
130
131 public void addFirstAxisSeries(XYSeries series) {
132 if (first == null) {
133 first = new XYSeriesCollection();
134 }
135
136 if (series != null) {
137 first.addSeries(series);
138 }
139 }
140
141
142 public void addSecondAxisSeries(XYSeries series) {
143 if (second == null) {
144 second = new XYSeriesCollection();
145 }
146
147 if (series != null) {
148 second.addSeries(series);
149 }
150 }
151
152
153 private void removeEmptyRangeAxes(XYPlot plot) {
154 if (first == null) {
155 plot.setRangeAxis(0, null);
156 }
157
158 if (second == null) {
159 plot.setRangeAxis(1, null);
160 }
112 } 161 }
113 162
114 163
115 /** 164 /**
116 * This method zooms the plot to the specified ranges in the attribute 165 * This method zooms the plot to the specified ranges in the attribute
127 Range xrange = getDomainAxisRange(); 176 Range xrange = getDomainAxisRange();
128 Range yrange = getValueAxisRange(); 177 Range yrange = getValueAxisRange();
129 178
130 for (int i = 0, num = plot.getDatasetCount(); i < num; i++) { 179 for (int i = 0, num = plot.getDatasetCount(); i < num; i++) {
131 XYDataset dataset = plot.getDataset(i); 180 XYDataset dataset = plot.getDataset(i);
181
182 if (dataset == null) {
183 continue;
184 }
185
132 Range[] ranges = getRangesForDataset(dataset); 186 Range[] ranges = getRangesForDataset(dataset);
133 187
134 if (i == 0) { 188 if (i == 0) {
135 ValueAxis xaxis = plot.getDomainAxis(); 189 ValueAxis xaxis = plot.getDomainAxis();
136 zoomX(plot, xaxis, ranges[0], xrange); 190 zoomX(plot, xaxis, ranges[0], xrange);
259 plot.setRangeGridlineStroke(gridStroke); 313 plot.setRangeGridlineStroke(gridStroke);
260 plot.setRangeGridlinePaint(DEFAULT_GRID_COLOR); 314 plot.setRangeGridlinePaint(DEFAULT_GRID_COLOR);
261 plot.setRangeGridlinesVisible(true); 315 plot.setRangeGridlinesVisible(true);
262 316
263 plot.setAxisOffset(new RectangleInsets(0d, 0d, 0d, 0d)); 317 plot.setAxisOffset(new RectangleInsets(0d, 0d, 0d, 0d));
318
319 if (plot.getDataset(0) != null) {
320 plot.mapDatasetToRangeAxis(0, 0);
321 }
322
323 if (plot.getDataset(1) != null) {
324 plot.mapDatasetToRangeAxis(1, 1);
325 }
264 } 326 }
265 327
266 328
267 protected void addSubtitles(JFreeChart chart) { 329 protected void addSubtitles(JFreeChart chart) {
268 // override this method in subclasses that need subtitles 330 // override this method in subclasses that need subtitles
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