//+------------------------------------------------------------------+
//|                                         PriceChannel_Stop_v6.mq4 |
//|                           Copyright © 2005, TrendLaboratory Ltd. |
//|            http://finance.groups.yahoo.com/group/TrendLaboratory |
//|                                       E-mail: igorad2004@list.ru |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, TrendLaboratory Ltd."
#property link      "http://finance.groups.yahoo.com/group/TrendLaboratory"

#property indicator_chart_window
#property indicator_buffers 8
#property indicator_color1 Blue
#property indicator_color2 Red
#property indicator_color3 Blue
#property indicator_color4 Red
#property indicator_color5 Blue
#property indicator_color6 Red
#property indicator_color7 Blue
#property indicator_color8 Red
//---- input parameters
extern int ChannelPeriod=9;   //Price Channel Period
extern double Risk=0.30;      //channel narrowing factor (0...0,5)  
extern int Signal=1;          //Display signals mode: 1-Signals & Stops; 0-only Stops; 2-only Signals;
extern int Line=1;            //Display line mode: 0-no,1-yes  
extern int ColorBar=1;        //Display color bars mode: 0-no,1-yes 
extern int TimeFrame=0;       //TimeFrame in min
extern int Nbars=1000;
//---- indicator buffers
double UpTrendBuffer[];
double DownTrendBuffer[];
double UpTrendSignal[];
double DownTrendSignal[];
double UpTrendLine[];
double DownTrendLine[];
double UpTrendBar[];
double DownTrendBar[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   string short_name;
//---- indicator line
   SetIndexBuffer(0,UpTrendBuffer);
   SetIndexBuffer(1,DownTrendBuffer);
   SetIndexBuffer(2,UpTrendSignal);
   SetIndexBuffer(3,DownTrendSignal);
   SetIndexBuffer(4,UpTrendLine);
   SetIndexBuffer(5,DownTrendLine);
   SetIndexBuffer(6,UpTrendBar);
   SetIndexBuffer(7,DownTrendBar);
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexStyle(2,DRAW_ARROW);
   SetIndexStyle(3,DRAW_ARROW);
   SetIndexStyle(4,DRAW_LINE);
   SetIndexStyle(5,DRAW_LINE);
   SetIndexStyle(6,DRAW_HISTOGRAM,STYLE_SOLID,1);
   SetIndexStyle(7,DRAW_HISTOGRAM,STYLE_SOLID,1);
   SetIndexArrow(0,159);
   SetIndexArrow(1,159);
   SetIndexArrow(2,108);
   SetIndexArrow(3,108);
//---- name for DataWindow and indicator subwindow label
   short_name="PriceChannel_Stop("+ChannelPeriod+")";
   IndicatorShortName(short_name);
   SetIndexLabel(0,"UpTrend Stop");
   SetIndexLabel(1,"DownTrend Stop");
   SetIndexLabel(2,"UpTrend Signal");
   SetIndexLabel(3,"DownTrend Signal");
   SetIndexLabel(4,"UpTrend Line");
   SetIndexLabel(5,"DownTrend Line");
   SetIndexLabel(6,"UpTrend Bar");
   SetIndexLabel(7,"DownTrend Bar");
//----
   SetIndexDrawBegin(0,ChannelPeriod);
   SetIndexDrawBegin(1,ChannelPeriod);
   SetIndexDrawBegin(2,ChannelPeriod);
   SetIndexDrawBegin(3,ChannelPeriod);
   SetIndexDrawBegin(4,ChannelPeriod);
   SetIndexDrawBegin(5,ChannelPeriod);
   SetIndexDrawBegin(6,ChannelPeriod);
   SetIndexDrawBegin(7,ChannelPeriod);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| PriceChannel_Stop_v6                                             |
//+------------------------------------------------------------------+
int start()
  {
   datetime TimeArray[];
   int    i,shift,trend,y=0;
   double high, low, price, sum, VolAverage,UpBar,DnBar;
   double smax[25000],smin[25000],bsmax[25000],bsmin[25000],Mid[25000],Vol[25000];
   double LowArray[],HighArray[];
   
   for (shift=Nbars-1;shift>=0;shift--)
   {
   UpTrendBuffer[shift]=0.0;
   DownTrendBuffer[shift]=0.0;
   UpTrendSignal[shift]=0.0;
   DownTrendSignal[shift]=0.0;
   UpTrendLine[shift]=EMPTY_VALUE;
   DownTrendLine[shift]=EMPTY_VALUE;
   UpTrendBar[shift]=0.0;
	DownTrendBar[shift]=0.0;
   }
// Draw price channel boards + calculation : Channel middle, half channel width, 
 
   
   ArrayCopySeries(TimeArray,MODE_TIME,Symbol(),TimeFrame); 
   ArrayCopySeries(LowArray,MODE_LOW,Symbol(),TimeFrame);     
   ArrayCopySeries(HighArray,MODE_HIGH,Symbol(),TimeFrame);  
   
   for(i=0,y=0;i<Nbars;i++)
   {
   if (Time[i]<TimeArray[y]) y++;  
   smin[i]=LowArray[Lowest(NULL,TimeFrame,MODE_LOW,ChannelPeriod,y)]; 
   smax[i]=HighArray[Highest(NULL,TimeFrame,MODE_HIGH,ChannelPeriod,y)];       
   Mid[i]=0.5*(smin[i]+smax[i]);
   }  
     
//
   
   for (shift=Nbars-ChannelPeriod-1;shift>=0;shift--)
   {	  
// Calculation channel stop values 
              
     bsmax[shift]=smax[shift]-(smax[shift]-smin[shift])*Risk;
	  bsmin[shift]=smin[shift]+(smax[shift]-smin[shift])*Risk;

// Signal area : any conditions to trend determination:     
// 1. Price Channel breakout 
    
     if(Risk>0)
     {
      if(Close[shift]>bsmax[shift])  trend=1; 
      if(Close[shift]<bsmin[shift])  trend=-1;
     }
     else
     {
      if(Close[shift]>bsmax[shift+1])  trend=1; 
      if(Close[shift]<bsmin[shift+1])  trend=-1;
     } 
    
// Correction boards values with existing trend	  		

	  if(trend>0)
     {
     if(Risk>0 && Close[shift]<bsmin[shift]) bsmin[shift]=bsmin[shift+1];
     if(bsmin[shift]<bsmin[shift+1]) bsmin[shift]=bsmin[shift+1];
     }
     if(trend<0)
     {
     if(Risk>0 && Close[shift]>bsmax[shift]) bsmax[shift]=bsmax[shift+1];
     if(bsmax[shift]>bsmax[shift+1]) bsmax[shift]=bsmax[shift+1];
     } 

// Drawing area	  
	  UpBar=bsmax[shift];
	  DnBar=bsmin[shift];
	  
	  if ( Risk == 0 ){UpBar=Mid[shift];DnBar=Mid[shift];}
	  
	  if (trend>0) 
	  {
	     if (Signal>0 && UpTrendBuffer[shift+1]==-1.0)
	     {
	        //bsmin[shift]=smin[shift];
	        UpTrendSignal[shift]=bsmin[shift];
	        if(Line>0) UpTrendLine[shift]=bsmin[shift];
	        
	     }
	     else
	     {
	     UpTrendBuffer[shift]=bsmin[shift];
	     if(Line>0) UpTrendLine[shift]=bsmin[shift];
	     UpTrendSignal[shift]=-1;
	     }
	  if(ColorBar>0)
	        {
	           if(Close[shift]>UpBar)
	           {
	              UpTrendBar[shift]=High[shift];
	              DownTrendBar[shift]=Low[shift];
	           }
	           else
	           {
	              UpTrendBar[shift]=EMPTY_VALUE;
	              DownTrendBar[shift]=EMPTY_VALUE;
	           }
	              
	        }   
	  if (Signal==2) UpTrendBuffer[shift]=0;   
	  DownTrendBuffer[shift]=-1.0;
	  DownTrendLine[shift]=EMPTY_VALUE;
	  }
	  
	  if (trend<0) 
	  {
	  if (Signal>0 && DownTrendBuffer[shift+1]==-1.0)
	     {
	     //bsmax[shift]=smax[shift];
	     DownTrendSignal[shift]=bsmax[shift];
	     if(Line>0) DownTrendLine[shift]=bsmax[shift];
	     }
	     else
	     {
	     DownTrendBuffer[shift]=bsmax[shift];
	     if(Line>0)DownTrendLine[shift]=bsmax[shift];
	     DownTrendSignal[shift]=-1;
	     }
	  if(ColorBar>0)
	        {
	           if(Close[shift]<DnBar)
	           {
	              UpTrendBar[shift]=Low[shift];
	              DownTrendBar[shift]=High[shift];
	           }
	           else
	           {
	              UpTrendBar[shift]=EMPTY_VALUE;
	              DownTrendBar[shift]=EMPTY_VALUE;
	           }      
	        }   
	  if (Signal==2) DownTrendBuffer[shift]=0;    
	  UpTrendBuffer[shift]=-1.0;
	  UpTrendLine[shift]=EMPTY_VALUE;
	  }
	  
	 
   }
   return(0);
  }
//+------------------------------------------------------------------+