//+------------------------------------------------------------------------------------+
//|                                                Din_fibo_Next.mq4                   |
//|                                 unknown author, get from kaizer, conversed by Rosh |
//| link to kaizer: http://forum.alpari-idc.ru/profile.php?mode=viewprofile&u=4196161  |
//|                                              http://forexsystems.ru/phpBB/index.php|
//+------------------------------------------------------------------------------------+
#property copyright "unknown author, get from kaizer, conversed by Rosh"
#property link      "http://forexsystems.ru/phpBB/index.php"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Red
#property indicator_color2 Red
//---- input parameters
extern int    Fibo_Channel_Period = 3;
extern double Ratio = 0.786;
extern bool   SetAllBars = false;
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
double tvBuffer[];
//----
int hh, ll, first, counterPeriod;
double tv, MaH, MaL;
//+------------------------------------------------------------------+
//| Получим следующий период                                         |
//+------------------------------------------------------------------+
string GetNextPeriod(int _Period)
  {
   string nextPeriod="";
//---- 
   switch (_Period)
     {
       case 5: nextPeriod = "H1"; break;
       case 15: nextPeriod = "H1"; break;
       case 30: nextPeriod = "H4"; break;
       case 60: nextPeriod = "H4"; break;
       case 240: nextPeriod = "D1"; break;
       case 1440: nextPeriod = "W1"; break;
       case 10080: nextPeriod = "M"; break;
       default: Print("Недопустимый период!!!"); 
     }
//----
   return(nextPeriod);
  }
//+------------------------------------------------------------------+
//| Проверим - разделитель диапазона или нет                         |
//+------------------------------------------------------------------+
bool isDelimeter(int _Period, int _shift)
  {
   bool result=false;
//---- 
   switch (_Period)
     {
       case 5:     result = (TimeMinute(Time[_shift]) == 0); 
                   break;
       case 15:    result = (TimeMinute(Time[_shift]) == 0); 
                   break;
       case 30:    result = (TimeMinute(Time[_shift]) == 0) && 
                            MathMod(TimeHour(Time[_shift]), 4.0) == 0.0; 
                   break;
       case 60:    result = (TimeMinute(Time[_shift]) == 0) && 
                            MathMod(TimeHour(Time[_shift]),4.0) == 0.0;
                   break;
       case 240:   result = (TimeMinute(Time[_shift]) == 0) && 
                            (TimeHour(Time[_shift]) == 0); 
                   break;
       case 1440:  result = (TimeDayOfWeek(Time[_shift]) == 1) && 
                            (TimeHour(Time[_shift]) == 0); 
                   break;
       case 10080: result = (TimeDay(Time[_shift]) == 1) || 
                            ((TimeDay(Time[_shift])==2 && 
                            TimeDay(Time[_shift+1]) !=1 ))||
                            ((TimeDay(Time[_shift]) == 3 && 
                            TimeDay(Time[_shift+1]) != 2)); 
                   break;
       default: Print("Недопустимый период!!!"); 
     }
//----
   return(result);
  }
//+------------------------------------------------------------------+
//| Установим MaH и MaL на границе диапазона                         |
//+------------------------------------------------------------------+
void SetHnL(int _shift)
  {
//---- 
   int i = _shift + 1;
   counterPeriod = 0;
   first = 0;
   while(counterPeriod < Fibo_Channel_Period)
     {
       while(tvBuffer[i] == 0.0 && i < Bars) 
           i++;
       if(first == 0) 
           first = i;
       counterPeriod++;
       i++;
     }
   i--;   
   hh = Highest(NULL, 0, MODE_HIGH, i - _shift, _shift + 1);
   ll = Lowest(NULL, 0, MODE_LOW, i - _shift, _shift + 1);
   tv = NormalizeDouble((High[hh] + Low[ll] + Close[_shift+1]) / 3.0, Digits);
   MaH = tv + NormalizeDouble((High[hh] - Low[ll]) / 2.0*Ratio, Digits);
   MaL = tv - NormalizeDouble((High[hh] - Low[ll]) / 2.0*Ratio, Digits);
   tvBuffer[_shift] = tv;
   ExtMapBuffer1[_shift] = MaH;
   ExtMapBuffer2[_shift] = MaL;
   if(SetAllBars) 
       SetMovingHnL(first, _shift);    
  }
//+------------------------------------------------------------------+
//| Установим MaH и MaL внутри диапазона                             |
//+------------------------------------------------------------------+
void SetMovingHnL(int _DelimeterBar, int CurBar)
  {
   int m_cnt;
   double deltaH, deltaL;
//---- 
   deltaH = (ExtMapBuffer1[_DelimeterBar] - ExtMapBuffer1[CurBar]) / (_DelimeterBar-CurBar);
   deltaL = (ExtMapBuffer2[_DelimeterBar] - ExtMapBuffer2[CurBar]) / (_DelimeterBar-CurBar);
   for(m_cnt = _DelimeterBar - 1; m_cnt > CurBar; m_cnt--)
     {
       ExtMapBuffer1[m_cnt] = ExtMapBuffer1[m_cnt+1] - deltaH;
       ExtMapBuffer2[m_cnt] = ExtMapBuffer2[m_cnt+1] - deltaL;
     }
   for(m_cnt = _DelimeterBar - 1; m_cnt > CurBar; m_cnt--)
     {
       ExtMapBuffer1[m_cnt] = NormalizeDouble(ExtMapBuffer1[m_cnt], Digits);
       ExtMapBuffer2[m_cnt] = NormalizeDouble(ExtMapBuffer2[m_cnt], Digits);
     }  
  }
//+------------------------------------------------------------------+
//| Установим MaH и MaL на правом краю                               |
//+------------------------------------------------------------------+
void SetValuesNullBar(int _shift)
  {
//---- 
   int i = _shift;
   while(tvBuffer[i] == 0.0) 
       i++;
   for(int j = i - 1; j > _shift; j--)
     {
       ExtMapBuffer1[j] = 0.0;
       ExtMapBuffer2[j] = 0.0;
     }
   first = 0;
   i = _shift;
   counterPeriod = 0;
   while(counterPeriod<Fibo_Channel_Period)
     {
       while(tvBuffer[i] == 0.0 && i < Bars) 
           i++;
       if(first == 0) 
           first = i;
       counterPeriod++;
       i++;
     }
   i--;   
   hh = Highest(NULL, 0, MODE_HIGH, i - _shift, _shift);
   ll = Lowest(NULL, 0, MODE_LOW, i - _shift, _shift);
   tv = NormalizeDouble((High[hh] + Low[ll] + Close[_shift]) / 3.0, Digits);
   MaH = tv + NormalizeDouble((High[hh] - Low[ll]) / 2.0*Ratio, Digits);
   MaL = tv - NormalizeDouble((High[hh] - Low[ll]) / 2.0*Ratio, Digits);
   ExtMapBuffer1[_shift] = MaH;
   ExtMapBuffer2[_shift] = MaL;
   if(SetAllBars) 
       SetMovingHnL(first, _shift);    
  }
//-------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- indicators
   IndicatorBuffers(3);
   string label;
   if(SetAllBars)
     {
       SetIndexStyle(0, DRAW_LINE);
       SetIndexBuffer(0, ExtMapBuffer1);
       label = "DFC Next " + GetNextPeriod(Period()) + "(" + Fibo_Channel_Period + ") MaH";
       SetIndexLabel(0, label);
       SetIndexEmptyValue(0, 0.0);

       SetIndexStyle(1, DRAW_LINE);
       SetIndexBuffer(1, ExtMapBuffer2);
       label="DFC Next " + GetNextPeriod(Period()) + "(" + Fibo_Channel_Period + ") MaL";
       SetIndexLabel(1, label);
       SetIndexEmptyValue(1, 0.0);
     }
   else
     {
       SetIndexStyle(0, DRAW_SECTION);
       SetIndexBuffer(0, ExtMapBuffer1);
       label="DFC Next " + GetNextPeriod(Period()) + "(" + Fibo_Channel_Period + ") MaH";
       SetIndexLabel(0, label);
       SetIndexEmptyValue(0, 0.0);

       SetIndexStyle(1, DRAW_SECTION);
       SetIndexBuffer(1, ExtMapBuffer2);
       label="DFC Next " + GetNextPeriod(Period()) + "(" + Fibo_Channel_Period + ") MaL";
       SetIndexLabel(1, label);
       SetIndexEmptyValue(1, 0.0);
     }
//----
   SetIndexBuffer(2, tvBuffer);
   SetIndexEmptyValue(2, 0.0);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
   int counted_bars = IndicatorCounted();
   int cnt, limit;
//---- 
   if(Period() == 10080) 
       return;
   if(counted_bars < 0) 
       return(-1);
   if(counted_bars > 0) 
       limit = Bars - counted_bars;
   if(counted_bars == 0)
     {
      // найти первый и второй разделитель и установить limit
      cnt = Bars - 1;
      while(!isDelimeter(Period(), cnt)) 
          cnt--;
      first = cnt;
      cnt--;
      counterPeriod = 0;
      while(counterPeriod < Fibo_Channel_Period)
        {
          while(!isDelimeter(Period(), cnt)) 
              cnt--;
          cnt--;
          counterPeriod++;
        }
      cnt++;
      hh = Highest(NULL, 0, MODE_HIGH, first-cnt, cnt + 1);
      ll = Lowest(NULL, 0, MODE_LOW, first - cnt, cnt + 1);
      tv = NormalizeDouble((High[hh] + Low[ll] + Close[cnt+1]) / 3.0, Digits);
      MaH = tv + NormalizeDouble((High[hh] - Low[ll]) / 2.0*Ratio, Digits);
      MaL = tv - NormalizeDouble((High[hh] - Low[ll]) / 2.0*Ratio, Digits);
      tvBuffer[cnt] = tv;
      ExtMapBuffer1[cnt] = MaH;
      ExtMapBuffer2[cnt] = MaL;
      limit = cnt - 1;
     }   
//----
   for(int shift = limit; shift >= 0; shift--)
     {
       if(isDelimeter(Period(), shift)) 
           SetHnL(shift);                 // else SetMovingHnL(shift);
       if(shift == 0) 
           SetValuesNullBar(shift);
     }
//----
   return(0);
  }
//+------------------------------------------------------------------+----------------+