Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/exports/XYChartGenerator.java @ 369:2ce7b473620e
Implemented the chart creation of a longitudinal section chart - W and Q facets.
flys-artifacts/trunk@1778 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Fri, 29 Apr 2011 10:13:24 +0000 |
| parents | |
| children | 60f63539d004 |
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| 368:3e66a5705c39 | 369:2ce7b473620e |
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| 1 package de.intevation.flys.exports; | |
| 2 | |
| 3 import java.awt.Color; | |
| 4 | |
| 5 import java.io.IOException; | |
| 6 | |
| 7 import org.apache.log4j.Logger; | |
| 8 | |
| 9 import org.jfree.chart.ChartFactory; | |
| 10 import org.jfree.chart.JFreeChart; | |
| 11 import org.jfree.chart.axis.NumberAxis; | |
| 12 import org.jfree.chart.plot.PlotOrientation; | |
| 13 import org.jfree.chart.plot.XYPlot; | |
| 14 import org.jfree.data.xy.XYDataset; | |
| 15 | |
| 16 import de.intevation.flys.exports.ChartExportHelper; | |
| 17 | |
| 18 | |
| 19 /** | |
| 20 * An abstract base class for creating XY charts. | |
| 21 * | |
| 22 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
| 23 */ | |
| 24 public abstract class XYChartGenerator extends ChartGenerator { | |
| 25 | |
| 26 /** The logger that is used in this generator.*/ | |
| 27 private static Logger logger = Logger.getLogger(ChartGenerator.class); | |
| 28 | |
| 29 | |
| 30 /** | |
| 31 * Returns the title of a chart. | |
| 32 * | |
| 33 * @return the title of a chart. | |
| 34 */ | |
| 35 protected abstract String getChartTitle(); | |
| 36 | |
| 37 /** | |
| 38 * Returns the X-Axis label of a chart. | |
| 39 * | |
| 40 * @return the X-Axis label of a chart. | |
| 41 */ | |
| 42 protected abstract String getXAxisLabel(); | |
| 43 | |
| 44 /** | |
| 45 * Returns the Y-Axis label of a chart. | |
| 46 * | |
| 47 * @return the Y-Axis label of a chart. | |
| 48 */ | |
| 49 protected abstract String getYAxisLabel(); | |
| 50 | |
| 51 /** | |
| 52 * Returns the XYDataset used to add curves to the chart. | |
| 53 * | |
| 54 * @return the XYDataset used to add curves to the chart. | |
| 55 */ | |
| 56 protected abstract XYDataset getXYDataset(); | |
| 57 | |
| 58 | |
| 59 public void generate() | |
| 60 throws IOException | |
| 61 { | |
| 62 logger.debug("XYChartGenerator.generate"); | |
| 63 | |
| 64 JFreeChart chart = ChartFactory.createXYLineChart( | |
| 65 getChartTitle(), | |
| 66 getXAxisLabel(), | |
| 67 getYAxisLabel(), | |
| 68 getXYDataset(), | |
| 69 PlotOrientation.VERTICAL, | |
| 70 true, | |
| 71 false, | |
| 72 false); | |
| 73 | |
| 74 chart.setBackgroundPaint(Color.WHITE); | |
| 75 chart.getPlot().setBackgroundPaint(Color.WHITE); | |
| 76 | |
| 77 adjustAxes((XYPlot) chart.getPlot()); | |
| 78 | |
| 79 ChartExportHelper.exportImage( | |
| 80 out, | |
| 81 chart, | |
| 82 "png", | |
| 83 600, 400); | |
| 84 } | |
| 85 | |
| 86 | |
| 87 /** | |
| 88 * Adjusts the axes of a plot. | |
| 89 * | |
| 90 * @param plot The XYPlot of the chart. | |
| 91 */ | |
| 92 protected void adjustAxes(XYPlot plot) { | |
| 93 NumberAxis yAxis = (NumberAxis) plot.getRangeAxis(); | |
| 94 | |
| 95 yAxis.setAutoRangeIncludesZero(false); | |
| 96 } | |
| 97 } | |
| 98 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |