Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/exports/ChartGenerator.java @ 2233:958a10e2e246
Added a new ChartGenerator for timeseries charts and refactored some code in XYChartGenerator.
flys-artifacts/trunk@3877 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Thu, 02 Feb 2012 12:26:36 +0000 |
| parents | 79a94c4171cb |
| children | 46ec09c7f578 |
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| 2232:78ac5058da67 | 2233:958a10e2e246 |
|---|---|
| 9 import org.apache.log4j.Logger; | 9 import org.apache.log4j.Logger; |
| 10 | 10 |
| 11 import org.w3c.dom.Document; | 11 import org.w3c.dom.Document; |
| 12 import org.w3c.dom.Element; | 12 import org.w3c.dom.Element; |
| 13 | 13 |
| 14 import org.jfree.chart.JFreeChart; | |
| 15 import org.jfree.chart.axis.NumberAxis; | |
| 14 import org.jfree.data.Range; | 16 import org.jfree.data.Range; |
| 15 | 17 |
| 16 import de.intevation.artifacts.Artifact; | 18 import de.intevation.artifacts.Artifact; |
| 17 import de.intevation.artifacts.CallContext; | 19 import de.intevation.artifacts.CallContext; |
| 18 import de.intevation.artifacts.CallMeta; | 20 import de.intevation.artifacts.CallMeta; |
| 79 | 81 |
| 80 /** The settings that should be used during output creation.*/ | 82 /** The settings that should be used during output creation.*/ |
| 81 protected Settings settings; | 83 protected Settings settings; |
| 82 | 84 |
| 83 | 85 |
| 86 /** | |
| 87 * A mini interface that allows to walk over the YAXIS enums defined in | |
| 88 * subclasses. | |
| 89 */ | |
| 90 public interface YAxisWalker { | |
| 91 int length(); | |
| 92 String getId(int idx); | |
| 93 } | |
| 94 | |
| 95 | |
| 96 protected abstract YAxisWalker getYAxisWalker(); | |
| 97 | |
| 98 protected abstract String getDefaultChartTitle(); | |
| 99 | |
| 100 protected abstract String getDefaultXAxisLabel(); | |
| 101 | |
| 102 protected abstract String getDefaultYAxisLabel(int pos); | |
| 103 | |
| 104 protected abstract void addSubtitles(JFreeChart chart); | |
| 105 | |
| 106 | |
| 84 public void init(Document request, OutputStream out, CallContext context) { | 107 public void init(Document request, OutputStream out, CallContext context) { |
| 85 logger.debug("ChartGenerator.init"); | 108 logger.debug("ChartGenerator.init"); |
| 86 | 109 |
| 87 this.request = request; | 110 this.request = request; |
| 88 this.out = out; | 111 this.out = out; |
| 182 * @throws NullPointerException if <i>settings</i> is null. | 205 * @throws NullPointerException if <i>settings</i> is null. |
| 183 */ | 206 */ |
| 184 public Integer getLegendFontSize(ChartSettings settings) { | 207 public Integer getLegendFontSize(ChartSettings settings) { |
| 185 LegendSection ls = settings.getLegendSection(); | 208 LegendSection ls = settings.getLegendSection(); |
| 186 return ls != null ? ls.getFontSize() : null; | 209 return ls != null ? ls.getFontSize() : null; |
| 210 } | |
| 211 | |
| 212 | |
| 213 /** | |
| 214 * Returns the Y-Axis label of a chart at position <i>pos</i>. | |
| 215 * | |
| 216 * @return the Y-Axis label of a chart at position <i>0</i>. | |
| 217 */ | |
| 218 protected String getYAxisLabel(int pos) { | |
| 219 ChartSettings chartSettings = getChartSettings(); | |
| 220 if (chartSettings == null) { | |
| 221 return getDefaultYAxisLabel(pos); | |
| 222 } | |
| 223 | |
| 224 YAxisWalker walker = getYAxisWalker(); | |
| 225 AxisSection as = chartSettings.getAxisSection(walker.getId(pos)); | |
| 226 if (as != null) { | |
| 227 String label = as.getLabel(); | |
| 228 | |
| 229 if (label != null) { | |
| 230 return label; | |
| 231 } | |
| 232 } | |
| 233 | |
| 234 return getDefaultYAxisLabel(pos); | |
| 187 } | 235 } |
| 188 | 236 |
| 189 | 237 |
| 190 protected Locale getLocale() { | 238 protected Locale getLocale() { |
| 191 CallMeta meta = context.getMeta(); | 239 CallMeta meta = context.getMeta(); |
| 404 return (ChartSettings) settings; | 452 return (ChartSettings) settings; |
| 405 } | 453 } |
| 406 | 454 |
| 407 return null; | 455 return null; |
| 408 } | 456 } |
| 457 | |
| 458 | |
| 459 /** | |
| 460 * Creates a new instance of <i>IdentifiableNumberAxis</i>. | |
| 461 * | |
| 462 * @param idx The index of the new axis. | |
| 463 * @param label The label of the new axis. | |
| 464 * | |
| 465 * @return an instance of IdentifiableNumberAxis. | |
| 466 */ | |
| 467 protected NumberAxis createNumberAxis(int idx, String label) { | |
| 468 YAxisWalker walker = getYAxisWalker(); | |
| 469 | |
| 470 return new IdentifiableNumberAxis(walker.getId(idx), label); | |
| 471 } | |
| 409 } | 472 } |
| 410 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : | 473 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |