history.getTickBar(Instrument, OfferSide.ASK, TickBarSize.valueOf(100), i);

Attachments:

CustomCandleIndicator.java [10 KiB] Downloaded 170 times

public class CustomFeedCandles implements IStrategy, IFeedListener {

    @Configurable("")
    public Instrument chartInstrument = Instrument.EURUSD;
    @Configurable("")
    public IFeedDescriptor feedDescriptor = new TickBarFeedDescriptor(Instrument.EURUSD, TickBarSize.valueOf(20), OfferSide.ASK);    
    @Configurable("")
    public int initialCandleCount = 20;

    private IChart chart;
    private IHistory history;
    private IConsole console;

    @Override
    public void onStart(IContext context) throws JFException {
        this.history = context.getHistory();
        this.console = context.getConsole();
        chart = context.getChart(chartInstrument);
        if(chart == null){
            console.getErr().println("No chart found for " + chartInstrument);
            context.stop();
        }
        if(feedDescriptor.getDataType() == DataType.TICKS){
            console.getErr().println("Can't work with ticks");
            context.stop();
        }
        ITimedData lastTimedData = history.getFeedData(feedDescriptor, 1);
        //use the same listener "this" for live data subscription and historical data async read
        context.subscribeToFeed(feedDescriptor, this);
        history.readFeedData(feedDescriptor, 20, lastTimedData.getTime(), 0, this, new EmptyListener());
    }
    
    @Override
    public void onFeedData(IFeedDescriptor feedDescriptor, ITimedData feedData) {
        if(feedData instanceof IPriceAggregationBar){
            drawCandle((IPriceAggregationBar)feedData, ((IPriceAggregationBar) feedData).getEndTime());
        } else if(feedData instanceof IBar){
            drawCandle((IBar)feedData, feedData.getTime() + feedDescriptor.getPeriod().getInterval());
        }
    }
    private void drawCandle(IBar bar, long endTime){
        long midTime = bar.getTime() + (endTime - bar.getTime())/2;
        IRectangleChartObject rectangle = chart.getChartObjectFactory().createRectangle("rect_" + bar.getTime(), bar.getTime(), bar.getOpen(), endTime, bar.getClose());
        IShortLineChartObject line = chart.getChartObjectFactory().createShortLine("line_" + bar.getTime(), midTime, bar.getLow(), midTime, bar.getHigh());

        Color color = bar.getClose() > bar.getOpen() ? Color.GREEN.darker() : Color.RED.darker();
        for(IChartDependentChartObject obj : new IChartDependentChartObject[]{rectangle, line}){
            obj.setStickToCandleTimeEnabled(false);
            obj.setColor(color);
            obj.setOpacity(0.3f);
        }
        line.setLineWidth(3f);
        
        chart.add(rectangle);
        chart.add(line);
    }
    //...
}

Attachments:

CustomFeedCandles.java [4.44 KiB] Downloaded 169 times

  
public IFeedDescriptor feedDescriptorASK = new TickBarFeedDescriptor(Instrument.EURUSD, TickBarSize.valueOf(200), OfferSide.ASK);    
public IFeedDescriptor feedDescriptorBID  = new TickBarFeedDescriptor(Instrument.EURUSD, TickBarSize.valueOf(200), OfferSide.BID);    

drawCandle((IPriceAggregationBar)feedDataASK, ((IPriceAggregationBar) feedDataASK).getEndTime(),  (IPriceAggregationBar)feedDataBID, ((IPriceAggregationBar) feedDataBID).getEndTime());

• You can save the first ITimedData in Map<Long, ITimedData> map, i.e., map.put(feedData.getTime(), feedData).
• When the other ITimedData arrives with the same timestamp you fetch the other feed element from the map, i.e., map.get(feedData.getTime()).
• You will know which feedData is of ASK and which of BID by checking the feedDescriptor element.

    for(IChartDependentChartObject obji : new IChartDependentChartObject[]{rectangle}){

       obji.setOpacity(0);
            obji.setColor(Color.WHITE);

       IFillableChartObject ofill= ( IFillableChartObject) obji;
       ofill.setFillOpacity(1);
         
          if( bar.getClose() > bar.getOpen())         
              ofill.setFillColor(Color.GREEN);   
          else
              ofill.setFillColor(Color.RED);   
            
            
        }      

IRectangleChartObject.setSizeLabelEnabled(false);

        
long timePadding = 1000;
IRectangleChartObject rectangle = chart.getChartObjectFactory().createRectangle("rect_" + bar.getTime(), bar.getTime() + timePadding, bar.getOpen(), endTime - timePadding, bar.getClose());