org.openmicroscopy.shoola.util.ui.graphutils.PieChart.java Source code

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Here is the source code for org.openmicroscopy.shoola.util.ui.graphutils.PieChart.java

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/*
 * org.openmicroscopy.shoola.util.ui.graphutils.PieChart 
 *
  *------------------------------------------------------------------------------
 *  Copyright (C) 2006-2007 University of Dundee. All rights reserved.
 *
 *
 *    This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 *------------------------------------------------------------------------------
 */
package org.openmicroscopy.shoola.util.ui.graphutils;

//Java imports
import java.awt.Color;
import java.util.ArrayList;
import java.util.List;

//Third-party libraries
import org.jfree.chart.ChartFactory;
import org.jfree.chart.plot.PiePlot3D;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.util.Rotation;

//Application-internal dependencies

/** 
 * Displays a pie chart using <code>JfreeChart</code>.
 *
 * @author  Jean-Marie Burel &nbsp;&nbsp;&nbsp;&nbsp;
 *    <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a>
 * @author   Donald MacDonald &nbsp;&nbsp;&nbsp;&nbsp;
 *    <a href="mailto:donald@lifesci.dundee.ac.uk">donald@lifesci.dundee.ac.uk</a>
 * @version 3.0
 * <small>
 * (<b>Internal version:</b> $Revision: $Date: $)
 * </small>
 * @since OME3.0
 */
public class PieChart extends ChartObject {

    /** Data for each series. */
    private List<Double> data;

    /** The pie chart dataset. */
    private DefaultPieDataset dataset;

    /** Initializes */
    private void initialize() {
        data = new ArrayList<Double>();
        colours = new ArrayList<Color>();
        dataset = new DefaultPieDataset();
    }

    /** Creates a new instance.*/
    public PieChart() {
        super("");
        initialize();
    }

    /**
     * Creates a new instance. 
     * 
     * @param title       The title of the graph.
     * @param newLegends    The legends of each value. 
     * @param newData       The data for each value. 
     * @param newColours    The colours for each value. 
     */
    public PieChart(String title, List<String> newLegends, List<Double> newData, List<Color> newColours) {
        super(title);
        if (newLegends == null || newData == null || newColours == null
                || newLegends.size() != newData.size() && newLegends.size() != newColours.size())
            throw new IllegalArgumentException("Mismatch between argument " + "length");
        initialize();
        for (int i = 0; i < newLegends.size(); i++)
            addValue(newLegends.get(i), newData.get(i), newColours.get(i));
    }

    /**
     * Adds a new values to the piechars. 
     * 
     * @param legend The name of the new values. 
     * @param newData The data. 
     * @param color The colour of the values. 
     * @return The total number of values in the plot, this also gives the id
     * of the just added value. 
     */
    public int addValue(String legend, double newData, Color color) {
        legends.add(legend);
        data.add(newData);
        colours.add(color);
        dataset.setValue(legend, newData);
        return dataset.getItemCount();
    }

    /** 
     * Creates the chart.
     * @see ChartObject#createChar()
     */
    void createChart() {
        chart = ChartFactory.createPieChart3D(title, dataset, false, true, false);
        PiePlot3D plot = (PiePlot3D) chart.getPlot();
        if (backgroundImage != null) {
            plot.setBackgroundImage(backgroundImage);
        }
        plot.setDirection(Rotation.CLOCKWISE);
        plot.setForegroundAlpha(0.55f);
    }

}