@Override
protected Component getChart() {
final Chart chart = new Chart();
chart.setWidth(500, Unit.PIXELS);
final Configuration configuration = chart.getConfiguration();
configuration.getChart().setType(ChartType.SOLIDGAUGE);
configuration.getTitle().setText("Speed");
Pane pane = new Pane();
pane.setCenter("50%", "85%");
pane.setSize("140%");
pane.setStartAngle(-90);
pane.setEndAngle(90);
configuration.addPane(pane);
configuration.getTooltip().setEnabled(false);
Background bkg = new Background();
bkg.setBackgroundColor(new SolidColor("#eeeeee"));
bkg.setInnerRadius("60%");
bkg.setOuterRadius("100%");
bkg.setShape("arc");
bkg.setBorderWidth(0);
pane.setBackground(new Background[] {bkg});
YAxis yaxis = configuration.getyAxis();
yaxis.setLineWidth(0);
yaxis.setTickInterval(200);
yaxis.setTickWidth(0);
yaxis.setMin(0);
yaxis.setMax(200);
yaxis.setTitle(new AxisTitle(""));
yaxis.getTitle().setY(-70);
yaxis.setLabels(new Labels());
yaxis.getLabels().setY(16);
Stop stop1 = new Stop(0.1f, SolidColor.GREEN);
Stop stop2 = new Stop(0.5f, SolidColor.YELLOW);
Stop stop3 = new Stop(0.9f, SolidColor.RED);
yaxis.setStops(new Stop[] {stop1, stop2, stop3});
PlotOptionsSolidGauge plotOptions = new PlotOptionsSolidGauge();
plotOptions.setTooltip(new SeriesTooltip());
plotOptions.getTooltip().setValueSuffix(" km/h");
DataLabels labels = new DataLabels();
labels.setY(5);
labels.setBorderWidth(0);
labels.setUseHTML(true);
labels.setFormat(
"<div style=\"text-align:center\"><span style=\"font-size:25px;\">{y}</span><br/>"
+ " <span style=\"font-size:12pxg\">km/h</span></div>");
plotOptions.setDataLabels(labels);
configuration.setPlotOptions(plotOptions);
final ListSeries series = new ListSeries("Speed", 80);
configuration.setSeries(series);
runWhileAttached(
chart,
new Runnable() {
Random r = new Random(0);
@Override
public void run() {
Integer oldValue = series.getData()[0].intValue();
Integer newValue = (int) (oldValue + (r.nextDouble() - 0.5) * 20.0);
if (newValue > 200) {
newValue = 200;
} else if (newValue < 0) {
newValue = 0;
}
series.updatePoint(0, newValue);
}
},
3000,
12000);
chart.drawChart(configuration);
return chart;
}
