//+------------------------------------------------------------------+
//|                                                       Levels.mq5 |
//|                                              Copyright 2018, AM2 |
//|                                      http://www.forexsystems.biz |
//+------------------------------------------------------------------+
#property copyright "Copyright 2018, AM2"
#property link      "http://www.forexsystems.biz"
#property version   "1.00"
#property indicator_chart_window

input int count=5;
input double lev1=0.2;
input double lev2=0.4;
input double lev3=0.6;
input color clr1=Blue;
input color clr2=Lime;
input color clr3=Yellow;

double op[];
datetime tm[],t[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   Comment("");
   ObjectsDeleteAll(0,0,OBJ_TREND);
   ArrayResize(tm,count);
   ArrayResize(op,count);
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void PutTrendLine(string name,datetime time1,double price,datetime time2,color clr)
  {
   ObjectDelete(0,name);
   ObjectCreate(0,name,OBJ_TREND,0,time1,price,time2,price);
//--- установим цвет линии 
   ObjectSetInteger(0,name,OBJPROP_COLOR,clr);
//--- установим толщину линии 
   ObjectSetInteger(0,name,OBJPROP_WIDTH,2);
//--- установим стиль отображения линии 
   ObjectSetInteger(0,name,OBJPROP_STYLE,1);
//--- включим (true) или отключим (false) режим продолжения отображения линии вправо 
   ObjectSetInteger(0,name,OBJPROP_RAY_RIGHT,false);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
double ND(double price)
  {
   return(NormalizeDouble(price,_Digits));
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
  {
//---
   CopyOpen(_Symbol,PERIOD_D1,0,count,op);
   CopyTime(_Symbol,PERIOD_D1,0,count,tm);
   CopyTime(_Symbol,PERIOD_CURRENT,0,1,t);
   ArraySetAsSeries(op,true);
   ArraySetAsSeries(tm,true);
   ArraySetAsSeries(t,true);

/**/
   for(int i=0;i<count;i++)
     {
      if(i==0)
        {
         PutTrendLine("op",tm[0],ND(op[0]),t[0],Red);

         PutTrendLine("up",tm[0],ND(op[0]*(1+lev1/100)),t[0],clr1);
         PutTrendLine("dn",tm[0],ND(op[0]*(1-lev1/100)),t[0],clr1);

         PutTrendLine("1up",tm[0],ND(op[0]*(1+lev2/100)),t[0],clr2);
         PutTrendLine("1dn",tm[0],ND(op[0]*(1-lev2/100)),t[0],clr2);

         PutTrendLine("2up",tm[0],ND(op[0]*(1+lev3/100)),t[0],clr3);
         PutTrendLine("2dn",tm[0],ND(op[0]*(1-lev3/100)),t[0],clr3);
        }

      if(i>0)
        {
         PutTrendLine("op"+(string)i,tm[i-1],ND(op[i]),tm[i],Red);

         PutTrendLine("1up"+(string)i,tm[i-1],ND(op[i]*(1+lev1/100)),tm[i],clr1);
         PutTrendLine("1dn"+(string)i,tm[i-1],ND(op[i]*(1-lev1/100)),tm[i],clr1);

         PutTrendLine("2up"+(string)i,tm[i-1],ND(op[i]*(1+lev2/100)),tm[i],clr2);
         PutTrendLine("2dn"+(string)i,tm[i-1],ND(op[i]*(1-lev2/100)),tm[i],clr2);

         PutTrendLine("3up"+(string)i,tm[i-1],ND(op[i]*(1+lev3/100)),tm[i],clr3);
         PutTrendLine("3dn"+(string)i,tm[i-1],ND(op[i]*(1-lev3/100)),tm[i],clr3);
        }
     }
//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+