Example usage for org.jfree.chart.plot ThermometerPlot setBackgroundAlpha

Introduction

In this page you can find the example usage for org.jfree.chart.plot ThermometerPlot setBackgroundAlpha.

Prototype

public void setBackgroundAlpha(float alpha) 

Source Link

Document

Sets the alpha transparency of the plot area background, and notifies registered listeners that the plot has been modified.

Usage

From source file:org.cyberoam.iview.charts.Thermometer.java

/**
 * This method generates JFreeChart instance for Thermometer chart with iView customization. 
 * @param reportID/*from  w  w  w  .  ja  va 2  s.  co  m*/
 * @param rsw
 * @param request
 * @return
 */
public static JFreeChart getChart(int reportID, ResultSetWrapper rsw, HttpServletRequest request) {
    ReportBean reportBean = ReportBean.getRecordbyPrimarykey(reportID);
    JFreeChart chart = null;
    ReportColumnBean reportColumnBean = null;
    GraphBean graphBean = null;
    try {
        DefaultValueDataset dataset = null;
        graphBean = GraphBean.getRecordbyPrimarykey(reportBean.getGraphId());
        reportColumnBean = ReportColumnBean.getRecordByPrimaryKey(reportBean.getReportId(),
                graphBean.getYColumnId());
        String yColumnDBname = reportColumnBean.getDbColumnName();
        rsw.first();
        double used = Double.parseDouble(rsw.getString(yColumnDBname));
        rsw.next();
        double free = Double.parseDouble(rsw.getString(yColumnDBname));
        dataset = new DefaultValueDataset((100 * used) / (used + free));
        ThermometerPlot plot = new ThermometerPlot(dataset);
        chart = new JFreeChart("", // chart title
                JFreeChart.DEFAULT_TITLE_FONT, plot, // plot
                false); // include legend
        chart.setBackgroundPaint(Color.white);
        plot.setThermometerStroke(new BasicStroke(2.0f));
        plot.setThermometerPaint(Color.DARK_GRAY);
        plot.setBulbRadius(30);
        plot.setColumnRadius(15);
        plot.setUnits(ThermometerPlot.UNITS_NONE);
        plot.setMercuryPaint(Color.WHITE);
        plot.setValueFont(new Font("Vandara", Font.CENTER_BASELINE, 12));
        plot.setBackgroundPaint(Color.white);
        plot.setBackgroundAlpha(0.0f);
        plot.setOutlineVisible(false);
        plot.setSubrangeInfo(0, 0, 50);
        plot.setSubrangeInfo(1, 50, 85);
        plot.setSubrangeInfo(2, 85, 100);
        plot.setSubrangePaint(0, new Color(75, 200, 85));
        plot.setSubrangePaint(1, new Color(254, 211, 41));
        plot.setSubrangePaint(2, new Color(255, 85, 85));

    } catch (Exception e) {
        CyberoamLogger.appLog.debug("Thermometer=>getChart.exception : " + e, e);
    }
    return chart;
}

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