//+------------------------------------------------------------------+
//|                                                    ADRTrader.mq4 |
//|                      Copyright © 2004, MetaQuotes Software Corp. |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2004, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Blue
#property indicator_color2 Red
//---- input parameters
extern int AdrLimit=10;
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
//----
double adrdel,adrdelb4,adrdelb4b4;
int    nShift;   
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
    SetIndexStyle(0, DRAW_ARROW, 0, 1);
    SetIndexArrow(0, 233);
    SetIndexBuffer(0, ExtMapBuffer1);
//----
    SetIndexStyle(1, DRAW_ARROW, 0, 1);
    SetIndexArrow(1, 234);
    SetIndexBuffer(1, ExtMapBuffer2);
//---- name for DataWindow and indicator subwindow label
    IndicatorShortName("ADr(" +AdrLimit  + ")");
    SetIndexLabel(0, "ADRcrUp");
    SetIndexLabel(1, "ADRcrDn"); 
//----
    switch(Period())
      {
        case     1: nShift = 1;   break;    
        case     5: nShift = 3;   break; 
        case    15: nShift = 5;   break; 
        case    30: nShift = 10;  break; 
        case    60: nShift = 15;  break; 
        case   240: nShift = 20;  break; 
        case  1440: nShift = 80;  break; 
        case 10080: nShift = 100; break; 
        case 43200: nShift = 200; break;               
      }
//----
    return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
    return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
    int limit;
    int counted_bars = IndicatorCounted();
//---- check for possible errors
    if(counted_bars < 0) 
        return(-1);
//---- last counted bar will be recounted
    if(counted_bars > 0) 
        counted_bars--;
    limit = Bars - counted_bars;
//----
    for(int i = 0; i < limit; i++)
      {
        adrdel=iCustom(NULL,0,"adrdeltshistorical",0,i);
         adrdelb4=iCustom(NULL,0,"adrdeltshistorical",0,i+1);
          adrdelb4b4=iCustom(NULL,0,"adrdeltshistorical",0,i+2);
          
        //----
        if(adrdel>AdrLimit&& adrdelb4b4>AdrLimit&& adrdel>adrdelb4)
            ExtMapBuffer1[i] = Low[i] - nShift*Point;
        //----
          if(adrdel<-1*AdrLimit&& adrdelb4b4<AdrLimit&& adrdel<adrdelb4)
            ExtMapBuffer2[i] = High[i] + nShift*Point;
      }
//----
    return(0);
  }
//+------------------------------------------------------------------+