MouseMove event

[traderT]

Piersh,

Code works well with MouseUp and the coordinates are displayed in the Output window successfully using the Print statement.

I have tried to add the code (highlighted in bold) to the use these coordinates to draw a line between the clicked on areas, but this does not work - I get a "Ninja has detected a problem ..." error when I click. I have also tried to replace X and Y with static values and this also generates the same error. Do I have my drawline in the right place, Am I doing something stupid? Any suggestions would be most appreciated.

void ChartControl_MouseMove (object sender, System.Windows.Forms.MouseEventArgs e)
{
eventCount ++;
double right = _chartBounds.Right - this.ChartControl.BarMarginRight - this.ChartControl.BarWidth - this.ChartControl.BarSpace / 2;
double bottom = _chartBounds.Bottom;

double x = right - e.X;
double y = bottom - e.Y;

int iBar = this.LastVisibleBar + (int) Math.Round (x / this.ChartControl.BarSpace);
double price = _min + y * (_max - _min) / _chartBounds.Height;

if(eventCount == 1)
{
x1 = iBar;
y1 = price; // y1-axis;
}
else if(eventCount == 2)
{
x2 = iBar;
y2 = price; // y2-axis;
eventCount = 0;
}
profitLine = Math.Max(y1, y2) - Math.Min(y1, y2);
midPoint = Math.Min(y1, y2) + profitLine /2;
string str = (profitLine * 10000).ToString("f0");

Print(y1 + "::" + x1 + " , " + y2 + "::" + x2);
if(Math.Min(y1,y2) > 0)
{
DrawLine("tag" + y1, 10, y1, 5, y2, Color.LimeGreen,DashStyle.Solid, 2);
// DrawLine("tag" + y1, 10, 1.5090, 5, 1.4456, Color.LimeGreen,DashStyle.Solid, 2);
// DrawText("tag2", str, 10, midPoint, Color.Black);
}

}

[piersh]

Originally Posted by traderT

I get a "Ninja has detected a problem ..." error when I click. I have also tried to replace X and Y with static values and this also generates the same error. Do I have my drawline in the right place, Am I doing something stupid?

no, i got the same error:

PHP Code:

 XYIndicator.DrawDot: bar out of valid range 0 through -1, was 75. 


i think this is because NT leaves the Bars collection in an invalid state. i've poked around in the debugger, but everything throws exceptions during mouse events.

there's a workaround, however.

declare the following in your Indicator's class:

PHP Code:

        delegate void Action ();
        Queue<Action> _rgPending = new Queue<Action> (); 


then add pending operations to the queue in your ChartControl_MouseXXXX event handler. don't forget to refresh the control:

PHP Code:

            _rgPending.Enqueue (
                delegate () {
                    this.DrawDot ("foo" + iBar, iBar, price, Color.Red);
                }
            );

            this.ChartControl.Refresh (); 


then, in Plot(), do the following:

PHP Code:

            foreach (Action pending in _rgPending)
                pending (); 


then you can waste a few minutes drawing silly lines on your charts ;-) like this:

[traderT]

Found another way, not sure how good it will be, but it seems to work using a custom event (basically, wait for ALT to be pressed then do drawing thing)

if(((Control.ModifierKeys & Keys.Alt) == Keys.Alt))
{

TriggerCustomEvent(new CustomEvent(MyCustomHandler), e);


My only problem now is getting xx1 and xx2 to work properly, seems to convert from double to int32 and give a result of 0, no idea why yet.

Anyway, the indicator below draws a line between 2 alt clicked points on the vertical access and tells you the points/distance. Tradestation has this tool, but NT doesn't.

#region Using declarations
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Data;
using NinjaTrader.Gui.Chart;
using System.Windows.Forms;
#endregion

// This namespace holds all indicators and is required. Do not change it.
namespace NinjaTrader.Indicator
{
/// <summary>
/// Enter the description of your new custom indicator here
/// </summary>
public class XYIndicator : Indicator
{
#region Variables
// Wizard generated variables
private int init1 = 1; // Default setting for Init1
private int init2 = 1; // Default setting for Init2
private bool _init = false;
private bool click = false;
private double _mouseOffset = 0;
private int eventCount = 0;
private double x1 = 0;
private double y1 = 0;
private double x2 = 0;
private double y2 = 0;
private int xx1 = 0;
private int xx2 = 0;
private double midPoint = 0;
private double profitLine = 0;
private string strProfitLine = "";
private string str = "";
private Font strFont;
// private double _mouseOffset = 0;
// private double _mouseOffset = 0;

// User defined variables (add any user defined variables below)
#endregion

protected override void Initialize ()
{
strFont = new Font("Arial", 20);

CalculateOnBarClose = false;
PaintPriceMarkers = false;
Overlay = true;
PriceTypeSupported = false;
PlotsConfigurable = false;
}

void ChartControl_MouseMove (object sender, System.Windows.Forms.MouseEventArgs e)
{
eventCount ++;
double right = _chartBounds.Right - this.ChartControl.BarMarginRight - this.ChartControl.BarWidth - this.ChartControl.BarSpace / 2;
double bottom = _chartBounds.Bottom;

double x = right - e.X;
double y = bottom - e.Y;

int iBar = this.LastVisibleBar + (int) Math.Round (x / this.ChartControl.BarSpace);
double price = _min + y * (_max - _min) / _chartBounds.Height;

if(eventCount == 1)
{
x1 = iBar;
y1 = price; // y1-axis;
}
else if(eventCount == 2)
{
x2 = iBar;
y2 = price; // y2-axis;
eventCount = 0;
}
profitLine = Math.Max(y1, y2) - Math.Min(y1, y2);
midPoint = Math.Min(y1, y2) + profitLine /2;
string str = (profitLine * 1000).ToString("f0");
strProfitLine = str;
int xx1 = Convert.ToInt32(x1);
int xx2 = Convert.ToInt32(x2);

//Print(y1 + "::" + x1 + " , " + y2 + "::" + x2);
if(Math.Min(y1,y2) > 0)
{
if(((Control.ModifierKeys & Keys.Alt) == Keys.Alt))
{

TriggerCustomEvent(new CustomEvent(MyCustomHandler), e);

}
}

}

private void MyCustomHandler(object state)
{
// Print(midPoint + " : " + strProfitLine + " : " + x1 + " : " + x2 );
DrawLine("tag1", xx2, y2, xx1, y1, Color.DarkGreen,DashStyle.Solid, 2);
DrawText("tag3", strProfitLine, 2, midPoint, Color.Black, new Font("ArialBold", 20), StringAlignment.Center, Color.Transparent, Color.Transparent, 10 );
}

public override void Plot (Graphics graphics, Rectangle bounds, double min, double max)
{
base.Plot (graphics, bounds, min, max);

_chartBounds = bounds;
_min = min;
_max = max;
}

public override void Dispose ()
{
base.Dispose ();
if (_chartControl != null)
_chartControl.ChartPanel.MouseUp -= new System.Windows.Forms.MouseEventHandler (ChartControl_MouseMove);
}

ChartControl _chartControl;
Rectangle _chartBounds;
double _min, _max;

/// <summary>
/// Called on each bar update event (incoming tick)
/// </summary>
protected override void OnBarUpdate ()
{
if (this.ChartControl != _chartControl)
{

if (_chartControl != null)
_chartControl.ChartPanel.MouseUp -= new System.Windows.Forms.MouseEventHandler (ChartControl_MouseMove);

_chartControl = this.ChartControl;

if (_chartControl != null)
_chartControl.ChartPanel.MouseUp += new System.Windows.Forms.MouseEventHandler (ChartControl_MouseMove);

}
}
}
}

#region NinjaScript generated code. Neither change nor remove.
// This namespace holds all indicators and is required. Do not change it.
namespace NinjaTrader.Indicator
{
public partial class Indicator : IndicatorBase
{
private XYIndicator [] cacheXYIndicator = null;

private static XYIndicator checkXYIndicator = new XYIndicator ();

/// <summary>
/// Enter the description of your new custom indicator here
/// </summary>
/// <returns></returns>
public XYIndicator XYIndicator ()
{
return XYIndicator (Input);
}

/// <summary>
/// Enter the description of your new custom indicator here
/// </summary>
/// <returns></returns>
public XYIndicator XYIndicator (Data.IDataSeries input)
{
if (cacheXYIndicator != null)
for (int idx = 0; idx < cacheXYIndicator.Length; idx++)
if (cacheXYIndicator [idx].EqualsInput (input))
return cacheXYIndicator [idx];

XYIndicator indicator = new XYIndicator ();
indicator.BarsRequired = BarsRequired;
indicator.CalculateOnBarClose = CalculateOnBarClose;
indicator.Input = input;
indicator.SetUp ();

XYIndicator [] tmp = new XYIndicator [cacheXYIndicator == null ? 1 : cacheXYIndicator.Length + 1];
if (cacheXYIndicator != null)
cacheXYIndicator.CopyTo (tmp, 0);
tmp [tmp.Length - 1] = indicator;
cacheXYIndicator = tmp;
Indicators.Add (indicator);

return indicator;
}

}
}

// This namespace holds all market analyzer column definitions and is required. Do not change it.
namespace NinjaTrader.MarketAnalyzer
{
public partial class Column : ColumnBase
{
/// <summary>
/// Enter the description of your new custom indicator here
/// </summary>
/// <returns></returns>
[Gui.Design.WizardCondition ("Indicator")]
public Indicator.XYIndicator XYIndicator ()
{
return _indicator.XYIndicator (Input);
}

/// <summary>
/// Enter the description of your new custom indicator here
/// </summary>
/// <returns></returns>
public Indicator.XYIndicator XYIndicator (Data.IDataSeries input)
{
return _indicator.XYIndicator (input);
}

}
}

// This namespace holds all strategies and is required. Do not change it.
namespace NinjaTrader.Strategy
{
public partial class Strategy : StrategyBase
{
/// <summary>
/// Enter the description of your new custom indicator here
/// </summary>
/// <returns></returns>
[Gui.Design.WizardCondition ("Indicator")]
public Indicator.XYIndicator XYIndicator ()
{
return _indicator.XYIndicator (Input);
}

/// <summary>
/// Enter the description of your new custom indicator here
/// </summary>
/// <returns></returns>
public Indicator.XYIndicator XYIndicator (Data.IDataSeries input)
{
if (InInitialize && input == null)
throw new ArgumentException ("You only can access an indicator with the default input/bar series from within the 'Initialize()' method");

return _indicator.XYIndicator (input);
}

}
}
#endregion

[piersh]

nice. yeah TriggerCustomEvent is the way to go...

[piersh]

ok, here's what i have.

Alt+right-click-drag to draw lines:

[traderT]

Now you're just showing off ;-)

Very good, will have a look at the code shortly and see if I can add an instrument modifier to convert the pips for different instruments as it does decimels for forex.

Thanks again for the help. Attached is my current implementation.

[Mindset]

Piersh - any idea how to get your code to work correctly on NT7 with second chart on panel.
Ps works fine on a single lone chart

[Mindset]

Well I have played with various things to sort this out but so far it has evaded me.
Looks simple using the new GetXByBarIdx(BarsArray[0],idx). But for the life of me I can't get m.X to convert to an idx.
I have spent so long looking at it now I am useless.

[zweistein]

Hello MindSet,

the Y value of the mouse can be in Panel 1 or Panel 2, so there is the ChartPanel[] Panel Property of ChartControl to find out.
I havnt' t done yet and please tell me your approach.


the X coordinate is easy:

I do:
privatevoid MouseClick(object state) {
System.Windows.Forms.MouseEventArgs e = ( System.Windows.Forms.MouseEventArgs) state;
MethodInfo mi=this.ChartControl.GetType().GetMethod("GetTimeByX",BindingFlags.Instance|BindingFlags.NonPublic|Bind ingFlags.Public);
DateTime t=(DateTime) mi.Invoke(this.ChartControl,newobject[]{e.X});

Print("Mouse("+e.X.ToString()+","+e.Y.ToString()+")"+ t.ToShortTimeString());
}


regards
Andreas

www.zweisteintrading.eu

NinjaTinyMobileTrader : control your NinjaTrader via a cell phone

[Mindset]

return (((((this.bounds.Y + this.bounds.Height) - y) * ChartControl.MaxMinusMin(this.max, this.min)) / ((double)this.bounds.Height)) + this.min);

This was my code before and it works on a single chart but not on multiple charts.

Your coding is way beyond my current learning but the mi line doesn't compile?

		private void myCustomEvent(object state)
		{
			MouseEventArgs m = (MouseEventArgs)state;
					
			int xpos = m.X;
			int ypos = m.Y;
		
MethodInfo mi=this.ChartControl.GetType().GetMethod("GetTimeByX",BindingFlags.Instance|BindingFlags.NonPublic|BindingFlags.Public);
DateTime t=(DateTime) ;
mi.Invoke(this.ChartControl,newobject[]{e.X});// error at array start
Print("Mouse("+e.X.ToString()+","+e.Y.ToString()+")"+ t.ToShortTimeString());

[zweistein]

using System.Windows.Forms;
using System.Reflection;

also:

"new object" instead of "newobject"



keep me updated on the multiple Panel solutions


regards

Andreas

www.zweisteintrading.eu
NinjaTinyMobileTrader : control your NinjaTrader via a cell phone

[Mindset]

Thanks Zweistein.
It seems that multiple charts reside in 1 form - the Y co ord simply covers the whole no of charts - as far as I can tell.

I spent most of Sunday fiddling around with the mouse nos and realise that I just don't grasp the concepts of bounds and canvas, etc correctly.

On top of that do you use co ordinates or time/price values - so I have remained utterly confused. I am going back to the beginning to try and get what exactly bounds, etc is/does and how to use it to plot things.

What is so frustrating for me is that all my work still works perfectly on a single chart - the pragmatic trader in me says simply don't use multiple charts on one panel. The coder in me however says that would be surrendering and we don't do that!!

If I ever sort this out or find a solution I will post it here.

[Mindset]

Below is a new indicator that simply plots a line dissecting the selected bar ( via mouse).

I seem to have sorted out the Y value ( remarkably easy actually).
However my X co ord again still only works on a single chart and misplots on multiple charts within 1 panel.


NB THIS IS FOR NT7 BETA ONLY

#region Using declarations
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Data;
using NinjaTrader.Gui.Chart;
using System.Reflection;
using System.Windows.Forms;
#endregion

namespace NinjaTrader.Indicator
{
/// <summary>
/// Reveals a line along the axis of the selected bar
/// Produces wrong bar on multiple charts in single panel
/// Mindset Jan 18 2010
/// </summary>
    [Description("Plots price on Mouse Click(Up)")]
    public class mouseline : Indicator
    {
        #region Variables
		private bool click = false;
		private bool IsOn = false;
		int bCount = 0;
		int barclick = 0;
		Font textFont1 = new Font("Verdana", 7F);
		public int TextOffset = 2;
		int xpos = 0;
		int myx = 0;
		internal double max;
        internal double min;
		#endregion

   
        protected override void Initialize()
        {
            CalculateOnBarClose	= false;
            Overlay				= true;
            PriceTypeSupported	= false;
			PlotsConfigurable = false;
			PaintPriceMarkers = false;
        }

		private void myMouseEvents(object sender, MouseEventArgs e)
		{
		TriggerCustomEvent(new CustomEvent(myCustomEvent),e );
		}
		
		private void myCustomEvent(object state)
		{
			MouseEventArgs m = (MouseEventArgs)state;
			 
		//MethodInfo mi=this.ChartControl.GetType().GetMethod("GetTimeByX",BindingFlags.Instance|BindingFlags.NonPublic|BindingFlags.Public);
		//DateTime t=(DateTime) mi.Invoke (this.ChartControl ,new object[] {m.X});

		
			 xpos = m.X;
			int ypos = m.Y;
			int totalbars = this.ChartControl.BarsPainted - 1; //make it zero based
			bCount = Bars.Count - 1; //make it zero based
			int lastbarpainted = this.ChartControl.LastBarPainted;
			int firstbarpainted = this.ChartControl.FirstBarPainted;
			int barspace = this.ChartControl.BarSpace;
			 barclick = (int)(xpos/barspace);	//gets the bar, from the painted ones where the mouse is clicked
			if(IsOn == false)
			{
			//get rid of the free space on the left side if there are insufficient bars to fill the chartpanel
			if (totalbars > lastbarpainted)
			{
				barclick -= (totalbars - lastbarpainted);
			}

			//finally get the actual barclick
			barclick += firstbarpainted -1;
			//make sure bar clicks is not less than 0 or greater than the total bars
			if (barclick > bCount)
			{
				barclick = bCount;
			}
			if (barclick < 0)
			{
				barclick = 0;
			}
			int mybarno = (bCount - barclick);
	
			IsOn = true;
			}
			
			else
				
			{
			IsOn = false;
			RemoveDrawObjects();
			}
		}

        protected override void OnBarUpdate()
        {
         	if (!click)
			{
				click = true;
				this.ChartControl.ChartPanel.MouseUp += new MouseEventHandler(myMouseEvents);	
			}		
        }
				
		public override void Dispose()
		{
		if (this.ChartControl != null)
			{
				this.ChartControl.ChartPanel.MouseUp -= myMouseEvents;
			}
		base.Dispose();
				
		}
		
		public override void Plot(Graphics graphics, Rectangle bounds, double min, double max)
        {
         if(ChartControl != null)
		{this.min = min;
		this.max = max;
		bounds = ChartControl.Bounds;
             
			Pen linePen = new Pen(Color.Red);
			linePen.Width = 4;
			int pointX = ChartControl.GetXByBarIdx(BarsArray[0], barclick);
			int myhigh = ChartControl.GetYByValue(BarsArray[0],High[bCount - barclick] +TickSize * 2);
			int mylow = ChartControl.GetYByValue(BarsArray[0],Low[bCount - barclick]- TickSize * 2);
			double y1 = myhigh;
			double y2 = mylow;
			graphics.DrawLine(linePen,pointX,(float)y1,pointX,(float)y2);	
			linePen.Dispose();
        }
		}
		
	

    }
}

[Mindset]

These 2 new methods in v7 are usefully outlined in the regression channel indicator.
GetXpos and GetYPos.

Again same problem - fine on single chart does NOT work on multi chart panel correctly.
here is the relevant section of code.
It is not a bug so this is the end of the road for me - I just don't see what is causing this behaviour.

public override void Plot(Graphics graphics, Rectangle bounds, double min, double max)
 {
  if(ChartControl != null)
{
this.min = min;
this.max = max;
bounds = ChartControl.Bounds;
    
Pen linePen = new Pen(Color.Red);
linePen.Width = 4;
int pointX = GetXPos(barsback);
double y1 = GetYPos(High[barsback]+(TickSize ),bounds,min,max);
double y2 = GetYPos(Low[barsback]-TickSize,bounds,min,max);
				
SmoothingMode oldSmoothingMode = graphics.SmoothingMode;		
graphics.SmoothingMode = SmoothingMode.AntiAlias;					
graphics.DrawLine(linePen,pointX,(float)y1,pointX,(float)y2);	
graphics.SmoothingMode = oldSmoothingMode;
linePen.Dispose();
   }
	}
		

private int GetXPos(int barsback)//from regression channel
{
int idx = (Bars.Count - 1) + Math.Max(0, Bars.Count - 1 - ChartControl.LastBarPainted) - barsback;
return ChartControl.GetXByBarIdx(BarsArray[0], idx) + 1 ;//- ChartControl.ChartStyle.GetBarPaintWidth(Bars.BarsData.ChartStyle.BarWidthUI) / 2;
}
		
private int GetYPos(double price, Rectangle bounds, double min, double max)
{	
return ChartControl.GetYByValue(this, price);
}

[Mindset]

I notice that there is a new signature for the custom event in 7.
I am unsure if this would cause the behaviour I am seeing but I don't understand what barsinprogress refers to. (not BarsArray[0] or just plain int 0).