ch.unibe.iam.scg.archie.ui.charts.AgeHistogrammChart.java Source code

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Here is the source code for ch.unibe.iam.scg.archie.ui.charts.AgeHistogrammChart.java

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/*******************************************************************************
 * Copyright (c) 2008 Dennis Schenk, Peter Siska.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Dennis Schenk - initial implementation
 *     Peter Siska    - initial implementation
 *******************************************************************************/
package ch.unibe.iam.scg.archie.ui.charts;

import java.awt.Color;

import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.swt.widgets.Composite;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.general.DefaultKeyedValues2DDataset;

import ch.unibe.iam.scg.archie.ArchieActivator;
import ch.unibe.iam.scg.archie.preferences.PreferenceConstants;

/**
 * <p>
 * Specific chart composite containing statistics about age distrubition in the
 * Elexis system.
 * </p>
 * 
 * $Id: AgeHistogrammChart.java 747 2009-07-23 09:14:53Z peschehimself $
 * 
 * @author Peter Siska
 * @author Dennis Schenk
 * @version $Rev: 747 $
 */
public class AgeHistogrammChart extends AbstractChartComposite {

    private static final String CHART_TITLE = "Age Histogram";

    /**
     * @param parent
     * @param style
     */
    public AgeHistogrammChart(Composite parent, int style) {
        super(parent, style);
    }

    /**
     * @see ch.unibe.iam.scg.archie.ui.charts.AbstractChartComposite#initializeChart()
     */
    @Override
    protected JFreeChart initializeChart() {
        JFreeChart chart = ChartFactory.createStackedBarChart(AgeHistogrammChart.CHART_TITLE, "Age", // domain
                // axis
                // label
                "Patients", // range axis label
                (DefaultKeyedValues2DDataset) this.creator.getDataset(), // data
                PlotOrientation.HORIZONTAL, true, // include legend
                true, // tooltips
                false // urls
        );

        // set tooltip renderer
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        plot.getRenderer().setBaseToolTipGenerator(new HistogramTooltipGenerator());

        // hide tick labels
        CategoryAxis axis = (CategoryAxis) plot.getDomainAxis();
        axis.setTickLabelsVisible(false);

        // Set chart background color to it's parents background
        chart.setBackgroundPaint(new Color(this.parent.getBackground().getRed(),
                this.parent.getBackground().getGreen(), this.parent.getBackground().getBlue()));

        return chart;
    }

    /**
     * @see ch.unibe.iam.scg.archie.ui.charts.AbstractChartComposite#initializeCreator()
     */
    @Override
    protected AbstractDatasetCreator initializeCreator() {
        return new AgeHistogrammDatasetCreator(AgeHistogrammChart.CHART_TITLE, this.getCohortSize());
    }

    /**
     * @see ch.unibe.iam.scg.archie.ui.charts.AbstractChartComposite#refresh()
     */
    @Override
    public void refresh() {
        super.refresh();
        ((AgeHistogrammDatasetCreator) this.creator).setCohortSize(this.getCohortSize());
    }

    /**
     * Set cohort size according to preferences, if set, else return default
     * value.
     */
    private int getCohortSize() {

        IPreferenceStore preferences = ArchieActivator.getInstance().getPreferenceStore();

        if (preferences.getInt(PreferenceConstants.P_COHORT_SIZE) > 0) {
            return preferences.getInt(PreferenceConstants.P_COHORT_SIZE);
        }
        return PreferenceConstants.DEFAULT_COHORT_SIZE;
    }
}