/**
* Appends a new bar on to the end of the chart.
*
* @param bar The bar to append to the chart
*/
public void addBar(BarData bar) {
if (dataSeries.get(0).getData().size() >= maxBarsToDisplay) {
dataSeries.get(0).getData().remove(0);
}
int datalength = dataSeries.get(0).getData().size();
dataSeries.get(0).getData().get(datalength - 1).setYValue(bar.getOpen());
dataSeries.get(0).getData().get(datalength - 1).setExtraValue(bar);
String label = sdf.format(bar.getDateTime().getTime());
logger.log(Level.INFO, "Adding bar with actual time: {0}", bar.getDateTime().getTime());
logger.log(Level.INFO, "Adding bar with formated time: {0}", label);
lastBar =
new BarData(
bar.getDateTime(), bar.getClose(), bar.getClose(), bar.getClose(), bar.getClose(), 0);
Data<String, Number> data = new XYChart.Data<>(label, lastBar.getOpen(), lastBar);
dataSeries.get(0).getData().add(data);
}
/** Called to update and layout the content for the plot */
@Override
protected void layoutPlotChildren() {
// we have nothing to layout if no data is present
if (getData() == null) {
return;
}
// update candle positions
for (int seriesIndex = 0; seriesIndex < getData().size(); seriesIndex++) {
Series<String, Number> series = getData().get(seriesIndex);
Iterator<Data<String, Number>> iter = getDisplayedDataIterator(series);
Path seriesPath = null;
if (series.getNode() instanceof Path) {
seriesPath = (Path) series.getNode();
seriesPath.getElements().clear();
}
while (iter.hasNext()) {
Data<String, Number> item = iter.next();
double x = getXAxis().getDisplayPosition(getCurrentDisplayedXValue(item));
double y = getYAxis().getDisplayPosition(getCurrentDisplayedYValue(item));
Node itemNode = item.getNode();
BarData bar = (BarData) item.getExtraValue();
if (itemNode instanceof Candle && item.getYValue() != null) {
Candle candle = (Candle) itemNode;
double close = getYAxis().getDisplayPosition(bar.getClose());
double high = getYAxis().getDisplayPosition(bar.getHigh());
double low = getYAxis().getDisplayPosition(bar.getLow());
double candleWidth = 10;
// update candle
candle.update(close - y, high - y, low - y, candleWidth);
// update tooltip content
candle.updateTooltip(bar.getOpen(), bar.getClose(), bar.getHigh(), bar.getLow());
// position the candle
candle.setLayoutX(x);
candle.setLayoutY(y);
}
}
}
}
