ingo@617: package de.intevation.gnv.chart;
ingo@617: 
ingo@617: import java.util.Locale;
ingo@617: 
ingo@617: import org.apache.log4j.Logger;
ingo@617: 
ingo@617: import org.jfree.chart.ChartFactory;
ingo@617: import org.jfree.chart.ChartTheme;
ingo@617: import org.jfree.chart.JFreeChart;
ingo@617: 
ingo@617: import org.jfree.chart.axis.NumberAxis;
ingo@617: import org.jfree.chart.plot.PlotOrientation;
ingo@617: import org.jfree.chart.plot.XYPlot;
ingo@617: import org.jfree.chart.renderer.xy.XYBarRenderer;
ingo@617: 
ingo@617: import org.jfree.data.statistics.HistogramDataset;
ingo@617: 
ingo@617: 
ingo@617: /**
ingo@617:  * @author Ingo Weinzierl (ingo.weinzierl@intevation.de)
ingo@617:  */
ingo@617: public abstract class AbstractHistogram
ingo@617: implements            Chart
ingo@617: {
ingo@617:     private Logger logger = Logger.getLogger(AbstractHistogram.class);
ingo@617: 
ingo@617:     protected JFreeChart  chart;
ingo@617:     protected ChartLabels labels;
ingo@617:     protected ChartTheme  theme;
ingo@617:     protected Object[]    data;
ingo@617: 
ingo@617:     protected Locale     locale;
ingo@617: 
ingo@617: 
ingo@617:     public AbstractHistogram(
ingo@617:         ChartLabels labels, Object[] data, ChartTheme theme
ingo@617:     ) {
ingo@617:         this.labels = labels;
ingo@617:         this.data   = data;
ingo@617:         this.theme  = theme;
ingo@617:     }
ingo@617: 
ingo@617: 
ingo@617:     public JFreeChart generateChart() {
ingo@617: 
ingo@617:         if (chart != null)
ingo@617:             return chart;
ingo@617: 
ingo@617:         chart = ChartFactory.createHistogram(
ingo@617:             labels.getTitle(),
ingo@617:             labels.getDomainAxisLabel(),
ingo@617:             labels.getRangeAxisLabel(),
ingo@617:             null,
ingo@617:             PlotOrientation.VERTICAL,
ingo@617:             true,
ingo@617:             false,
ingo@617:             false);
ingo@617: 
ingo@617:         applyDatasets();
ingo@617: 
ingo@617:         theme.apply(chart);
ingo@617:         adjustPlot();
ingo@617: 
ingo@617:         return chart;
ingo@617:     }
ingo@617: 
ingo@617: 
ingo@617:     protected void adjustPlot() {
ingo@617:         XYPlot plot = (XYPlot) chart.getPlot();
ingo@617:         XYBarRenderer renderer = (XYBarRenderer) plot.getRenderer();
ingo@617: 
ingo@617:         renderer.setShadowVisible(false);
ingo@617:         renderer.setSeriesVisibleInLegend(0, false);
ingo@617:     }
ingo@617: 
ingo@617: 
ingo@617:     protected abstract void applyDatasets();
ingo@617: }
ingo@617: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :