How to sync indicator or drawing tool chart painting with current price painting?

[xfactscout]

I see there is a delay many times (0.25s - 1s) between current price being painted on the chart and "OnRender" function of the indicator or a drawing tool being painted on the chart.

For example if I take the built in indicator "Bar Timer", and let's say I want the remaining time to be painted always near the current price instead of the default bottom right.

So I changed / added the following:

private double currentPrice;
public SpaceFrom = 1; // OnStateChange -> State.SetDefaults​
​
protected override void OnBarUpdate()
{
    currentPrice = Close[0];
​}

private void OnTimerTick(object sender, EventArgs e)
{

    // Draw.TextFixed was replaced with Draw.Text

    Draw.TextFixed(this, "NinjaScriptInfo", NinjaTrader.Custom.Resource.BarTimerTimeRemaining + timeLeft, TextPosition.BottomRight, ChartControl.Properties.ChartText, ChartControl.Properties.LabelFont, Brushes.Transparent, Brushes.Transparent, 0); // removed

    Draw.Text(this, "MyIndicator", false, timeLeft, -SpaceFrom, currentPrice, 0, ChartControl.Properties.ChartText, ChartControl.Properties.LabelFont, TextAlignment.Left, Brushes.Transparent, Brushes.Transparent, 0); //added​
​}

The indicator and the time left calculation works properly and it's being painted in the right place. But when there is a price change, many times the paint itself isn't in sync with current price Y axis. It takes about 0.5-1 seconds to catch up with current price Y point.

How can I fix it?

Same happens with Drawing Tools. The "OnRender" function is delayed compering to current price changes.

[xfactscout]

Can anyone help with that? Or point me to the right direction?
Will really appreciate it.

[NinjaTrader_ChelseaB]

Hello xfactscout,

Chart indicators update every 250 milliseconds. Unfortunately, this cannot be adjusted.

If the OnTimerTick is from a timer Tick event, this would be a non-data-driven-method and would require calling TriggerCustomEvent() before calling a Draw method or using any method with a barsAgo value or using anything related to a Series<T>.

https://ninjatrader.com/support/helpGuides/nt8/triggercustomevent.htm

If making a visual change, you can call ForceRefresh() to ensure the chart updates on the next render round.

https://ninjatrader.com/support/helpGuides/nt8/forcerefresh.htm

[xfactscout]

Thank you ChelseaB.

Was able to sync it in the Indicator.

Will try soon in the Drawing Tool as well.