Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/chart/AbstractHistogram.java @ 623:65f09139e9b3

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Fixed file handle leak when writing meta data. gnv-artifacts/trunk@694 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sun, 21 Feb 2010 21:05:55 +0000
parents 3d13fa281a7e
children 79401c871da4
rev   line source
617
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1 package de.intevation.gnv.chart;
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2
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3 import java.util.Locale;
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4
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5 import org.apache.log4j.Logger;
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6
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7 import org.jfree.chart.ChartFactory;
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8 import org.jfree.chart.ChartTheme;
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9 import org.jfree.chart.JFreeChart;
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10
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11 import org.jfree.chart.plot.PlotOrientation;
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12 import org.jfree.chart.plot.XYPlot;
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13
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65f09139e9b3 Fixed file handle leak when writing meta data.
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14 import org.jfree.chart.renderer.xy.XYBarRenderer;
617
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15
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16 /**
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17 * @author Ingo Weinzierl (ingo.weinzierl@intevation.de)
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18 */
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19 public abstract class AbstractHistogram
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20 implements Chart
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21 {
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22 private Logger logger = Logger.getLogger(AbstractHistogram.class);
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23
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24 protected JFreeChart chart;
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25 protected ChartLabels labels;
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26 protected ChartTheme theme;
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27 protected Object[] data;
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28
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29 protected Locale locale;
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30
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31
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32 public AbstractHistogram(
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33 ChartLabels labels, Object[] data, ChartTheme theme
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34 ) {
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35 this.labels = labels;
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36 this.data = data;
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37 this.theme = theme;
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38 }
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39
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40
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41 public JFreeChart generateChart() {
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42
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43 if (chart != null)
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44 return chart;
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45
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46 chart = ChartFactory.createHistogram(
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47 labels.getTitle(),
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48 labels.getDomainAxisLabel(),
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49 labels.getRangeAxisLabel(),
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50 null,
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51 PlotOrientation.VERTICAL,
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52 true,
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53 false,
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54 false);
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55
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56 applyDatasets();
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57
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58 theme.apply(chart);
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59 adjustPlot();
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60
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61 return chart;
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62 }
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63
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64
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65 protected void adjustPlot() {
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66 XYPlot plot = (XYPlot) chart.getPlot();
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67 XYBarRenderer renderer = (XYBarRenderer) plot.getRenderer();
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68
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69 renderer.setShadowVisible(false);
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70 renderer.setSeriesVisibleInLegend(0, false);
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71 }
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72
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73
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74 protected abstract void applyDatasets();
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75 }
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76 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org