//+------------------------------------------------------------------+
//|                                               Rj_ActivMarket.mq4 |
//|                           Copyright © 2011, RJ Rjabkov Aleksandr |
//|                                                     rj-a@mail.ru |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2011, RJ Rjabkov Aleksandr"
#property link      "rj-a@mail.ru"

#property indicator_chart_window

extern int smooth=12;

double VSlice[];
double Buff[];
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int init() 
  {
   IndicatorBuffers(2);
   SetIndexBuffer(0,VSlice);
   SetIndexBuffer(1,Buff);
   return(0);
  }
//***************   
int deinit() {for(int i=0; i<=200; i++) {ObjectDelete("m "+i);} ObjectDelete("marks"); return(0);}
//***************
int start() 
  {
   int i,cb;
   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+smooth;
   
   cb=limit;

   for(i=cb; i>=0; i--) Buff[i]=Volume[i]/(Period()*60);

   for(i=cb; i>=0; i--) VSlice[i]=smooth(Buff,smooth,i);

   int PercentActive=MathRound(VSlice[0]*100);
   double Marks=NormalizeDouble(VSlice[0]*100,2);
   color r=255,g=255,b=0;
   int CoordTime1=Time[0]+(WindowBarsPerChart()-WindowFirstVisibleBar()-3)*Period()*60;
   int CoordTime2=Time[0]+(WindowBarsPerChart()-WindowFirstVisibleBar()-6)*Period()*60;
   double CoordPrice=WindowPriceMin()+5*Point;
   color ColLine;

   for(i=0; i<=200; i++) {ObjectDelete("m "+i);}
   ObjectDelete("marks");

   for(i=0; i<=PercentActive; i++) 
     {
      if(g<0) g=0;
      ColLine=r+g*256+b*65536;
      ObjectCreate("m "+i,OBJ_TREND,0,0,0,0,0);
      ObjectSet("m "+i,OBJPROP_TIME1,CoordTime1);
      ObjectSet("m "+i,OBJPROP_TIME2,CoordTime2);
      ObjectSet("m "+i,OBJPROP_PRICE1,CoordPrice);
      ObjectSet("m "+i,OBJPROP_PRICE2,CoordPrice);
      ObjectSet("m "+i,OBJPROP_STYLE,DRAW_LINE);
      ObjectSet("m "+i,OBJPROP_WIDTH,3);
      ObjectSet("m "+i,OBJPROP_COLOR,ColLine);
      ObjectSet("m "+i,OBJPROP_BACK,false);
      ObjectSet("m "+i,OBJPROP_RAY,false);
      g-=2;
      CoordPrice+=0.00005;
     }
   ObjectCreate("marks",OBJ_TEXT,0,((CoordTime2-CoordTime1)/2)+CoordTime1,CoordPrice+4*Point);
   ObjectSetText("marks",DoubleToStr(Marks,2)+"%",8,"Arial",ColLine);
   return(0);
  }
//+------------------------------------------------------------------+
double smooth(double smooth_name[],int smooth,int count) 
  {
   double result;
   int smoothed=smooth+count;
   while(smoothed>count) 
     {
      result+=smooth_name[smoothed-1];
      smoothed--;
     }
   result=result/smooth;
   return(result);
  }
//+------------------------------------------------------------------+