/** * 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); } } } }