//+------------------------------------------------------------------+
//|                                                ShadowCandles.mq4 |
//|                            Copyright © 2009, ПавелИванович (api) |
//|                                              p231970@hotmail.com |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2009, ПавелИванович (api)"
#property link      "p231970@hotmail.com"

#property indicator_chart_window
//---- input parameters
extern int       iPeriod=720;
extern int       tShift = 60;
extern int       iNumCandles=80;
extern color     BullCandle=Maroon;
extern color     BearCandle=Blue;
extern color     BullShadow=Maroon;
extern color     BearShadow=Blue;

double data[][6];
bool ValidParams=true;
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int init()
  {
   if(iPeriod<=Period())
      ValidParams=false;
   if(MathMod(iPeriod,Period())!=0)
      ValidParams=false;
   if(MathMod(tShift,Period())!=0)
      ValidParams=false;

   ArrayResize(data,iNumCandles);

  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
   for(int i=0;i<iNumCandles;i++)
     {
      ObjectDelete("ShadowCandle"+i);
      ObjectDelete("ShadowCandleShadow"+i);
     }
   Comment("");
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   if(!ValidParams)
     {
      Comment("Invalid parameters!");
      return(0);
     }

   int         PerSec=iPeriod*60;
   datetime    time_0,time_F;
   static datetime last_time_0=0;
   double      dO,dC,dH,dL;
   int         iSh=0,iBar=0,i=0;
   
   int counted_bars=IndicatorCounted();
   if(counted_bars<0) return(-1);
   if(counted_bars>0) counted_bars--;
   int limit=Bars-counted_bars;
   if(counted_bars==0) limit-=1;
  
    while(i<iNumCandles)
    {
       if (iBar>=limit) break;
      time_0=MathFloor((1.0*Time[iBar]-tShift*60)/PerSec);
      time_0*=PerSec;
      time_0+=tShift*60;
      time_F=time_0+PerSec-Period()*60;

      iSh=iBarShift(NULL,0,time_0);
      dO=Open[iSh];
      dC=Close[iBar];
      dH=High[iHighest(NULL,0,MODE_HIGH,iSh+1-iBar,iBar)];
      dL=Low[ iLowest( NULL,0,MODE_LOW, iSh+1-iBar,iBar)];

      data[i][0]=time_0;
      data[i][1]=dO;
      data[i][2]=dL;
      data[i][3]=dH;
      data[i][4]=dC;
      data[i][5]=time_F;

      DrawCandle(i);

      if(i==0)
         if(last_time_0<time_0)
            last_time_0=time_0;
      else
         break;

      iSh++;
      iBar=iSh;
      i++;
     }
   return(0);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void DrawCandle(int bar)
  {
   string name1 = "ShadowCandleShadow"+bar;
   string name2 = "ShadowCandle"+bar;
   if(!ObjectCreate(name1,OBJ_RECTANGLE,0,data[bar][0],data[bar][2],data[bar][5],data[bar][3]))
     {
      ObjectSet(name1,OBJPROP_TIME1,data[bar][0]);
      ObjectSet(name1,OBJPROP_TIME2,data[bar][5]);
      ObjectSet(name1,OBJPROP_PRICE1,data[bar][2]);
      ObjectSet(name1,OBJPROP_PRICE2,data[bar][3]);
     }
   ObjectSet(name1,OBJPROP_BACK,false);
   if(!ObjectCreate(name2,OBJ_RECTANGLE,0,data[bar][0],data[bar][1],data[bar][5],data[bar][4]))
     {
      ObjectSet(name2,OBJPROP_TIME1,data[bar][0]);
      ObjectSet(name2,OBJPROP_TIME2,data[bar][5]);
      ObjectSet(name2,OBJPROP_PRICE1,data[bar][1]);
      ObjectSet(name2,OBJPROP_PRICE2,data[bar][4]);
     }
   ObjectSet(name2,OBJPROP_BACK,true);
   if(data[bar][1]<data[bar][4])
     {
      ObjectSet(name1,OBJPROP_COLOR,BullShadow);
      ObjectSet(name2,OBJPROP_COLOR,BullCandle);
     }
   else
     {
      ObjectSet(name1,OBJPROP_COLOR,BearShadow);
      ObjectSet(name2,OBJPROP_COLOR,BearCandle);
     }
  }
//+------------------------------------------------------------------+