Source Code of de.laures.cewolf.cpp.SeriesPaintProcessor

package de.laures.cewolf.cpp;


import java.awt.Color;
import java.io.Serializable;
import java.util.*;


import de.laures.cewolf.ChartPostProcessor;


import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.*;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.chart.renderer.xy.XYItemRenderer;


/**
* A postprocessor for setting alternative colors for pie charts, category plots, XY plots and spider web plots.
* It takes numbered parameters containing the hex color values.
* <P>
* Usage:<P>
* &lt;chart:chartpostprocessor id="seriesPaint"&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="0" value="#FFFFAA" /&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="1" value="#AAFFAA" /&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="2" value="#FFAAFF" /&gt;<BR>
* &nbsp;&nbsp;&lt;chart:param name="3" value="#FFAAAA" /&gt;<BR>
* &lt;/chart:chartpostprocessor&gt;
*/


public class SeriesPaintProcessor implements ChartPostProcessor, Serializable
{
  static final long serialVersionUID = -2290498142826058256L;


    public void processChart (Object chart, Map params) {
    JFreeChart localChart = (JFreeChart) chart;
        Plot plot = (Plot) localChart.getPlot();


    // pie charts
    if (plot instanceof PiePlot) {
      PiePlot piePlot = (PiePlot) plot;


      List keys = piePlot.getDataset().getKeys();
      for (int i=0; i<params.size(); i++) {
        String colorStr = (String) params.get(String.valueOf(i));
        piePlot.setSectionPaint((Comparable) keys.get(i), Color.decode(colorStr));
      }


    // category plots
    } else if (plot instanceof CategoryPlot) {
      CategoryItemRenderer render = ((CategoryPlot) plot).getRenderer();


      for (int i=0; i<params.size(); i++) {
        String colorStr = (String) params.get(String.valueOf(i));
        render.setSeriesPaint(i, Color.decode(colorStr));
      }


    // spider web plots
    } else if (plot instanceof SpiderWebPlot) {
      SpiderWebPlot swPlot = (SpiderWebPlot) plot;


      for (int i=0; i<params.size(); i++) {
        String colorStr = (String) params.get(String.valueOf(i));
        swPlot.setSeriesPaint(i, Color.decode(colorStr));
      }


    // XY plots
    } else if (plot instanceof XYPlot) {
      XYItemRenderer render = ((XYPlot) plot).getRenderer();


      for (int i=0; i<params.size(); i++) {
        String colorStr = (String) params.get(String.valueOf(i));
        render.setSeriesPaint(i, Color.decode(colorStr));
      }
    }
  }
}
Source Code of de.laures.cewolf.cpp.SeriesPaintProcessor

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