Example usage for org.jfree.chart.plot MeterPlot setBackgroundImageAlpha

Introduction

In this page you can find the example usage for org.jfree.chart.plot MeterPlot setBackgroundImageAlpha.

Prototype

public void setBackgroundImageAlpha(float alpha) 

Source Link

Document

Sets the alpha transparency used when drawing the background image.

Usage

From source file:ucar.unidata.idv.flythrough.Flythrough.java

/**
 * _more_//from  w  ww  .  j  ava2 s .  co m
 *
 * @param pt1 _more_
 *
 * @throws Exception _more_
 */
protected void processReadout(FlythroughPoint pt1) throws Exception {

    Font font = new Font("Dialog", Font.BOLD, 22);
    dials = new ArrayList<JComponent>();
    if ((readoutLabel == null) || (pt1 == null)) {
        return;
    }

    List<ReadoutInfo> samples = new ArrayList<ReadoutInfo>();
    readoutLabel.setText(readout.getReadout(pt1.getEarthLocation(), showReadout, true, samples));

    if (!showReadout) {
        return;
    }

    List comps = new ArrayList();
    for (FlythroughDecorator decorator : decorators) {
        decorator.handleReadout(pt1, samples);
    }

    for (ReadoutInfo info : samples) {
        Real r = info.getReal();
        if (r == null) {
            continue;
        }

        Unit unit = info.getUnit();
        if (unit == null) {
            unit = r.getUnit();
        }
        String name = ucar.visad.Util.cleanTypeName(r.getType());

        String unitSuffix = "";
        if (unit != null) {
            unitSuffix = " [" + unit + "]";
        }

        double v = r.getValue(unit);
        if (v == v) {
            v = Misc.parseNumber(Misc.format(v));
        }

        JLabel label = new JLabel(name.replace("_", " "));

        label.setFont(font);
        DefaultValueDataset dataset = new DefaultValueDataset(new Double(v));
        MeterPlot plot = new MeterPlot(dataset);
        if (info.getRange() != null) {
            Range range = info.getRange();
            plot.setRange(new org.jfree.data.Range(range.getMin(), range.getMax()));
        }
        if (unit != null) {
            plot.setUnits(unit.toString());
        } else {
            plot.setUnits("");
        }
        plot.setDialBackgroundPaint(Color.white);
        plot.setTickLabelsVisible(true);
        plot.setValueFont(font);
        plot.setTickLabelFont(font);
        plot.setTickLabelPaint(Color.darkGray);
        plot.setTickPaint(Color.black);
        plot.setValuePaint(Color.black);

        JFreeChart chart = new JFreeChart("", plot);
        TextTitle title = new TextTitle(" " + label.getText() + " ", font);
        title.setBackgroundPaint(Color.gray);
        title.setPaint(Color.white);
        chart.setTitle(title);
        ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(dialDimension);
        chartPanel.setSize(new Dimension(150, 150));
        plot.setBackgroundPaint(new Color(255, 255, 255, 0));
        plot.setBackgroundImageAlpha(0.0f);
        chart.setBackgroundPaint(new Color(255, 255, 255, 0));
        chartPanel.setBackground(new Color(255, 255, 255, 0));
        comps.add(chartPanel);
        dials.add(chartPanel);
    }

    readoutDisplay.removeAll();
    updateDashboard();

}

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