//+------------------------------------------------------------------+
//|                                                         XADX.mq5 |
//|                           Copyright © 2010,     Nikolay Kositsin | 
//|                              Khabarovsk,   farria@mail.redcom.ru | 
//+------------------------------------------------------------------+
//---- author of the indicator
#property copyright "Copyright © 2010, Nikolay Kositsin"
//---- link to the website of the author
#property link "farria@mail.redcom.ru" 
//---- indicator version
#property version   "1.00"
//---- drawing indicator in a separate window
#property indicator_separate_window
//---- three buffers are used for calculation and drawing the indicator
#property indicator_buffers 3
//---- 3 plots are used
#property indicator_plots   3
//+----------------------------------------------+
//|  Bullish indicator drawing parameters        |
//+----------------------------------------------+
//---- drawing the indicator 1 as a line
#property indicator_type1   DRAW_LINE
//---- lime color is used as the color of the indicator line
#property indicator_color1  Lime
//---- the indicator 1 line is a continuous curve
#property indicator_style1  STYLE_SOLID
//---- indicator 1 line width is equal to 1
#property indicator_width1  1
//---- displaying the indicator line label
#property indicator_label1  "XDi Plus"
//+----------------------------------------------+
//|  Bearish indicator drawing parameters        |
//+----------------------------------------------+
//---- drawing the indicator 2 as a line
#property indicator_type2   DRAW_LINE
//---- red color is used for the indicator line
#property indicator_color2  Red
//---- the indicator 2 line is a continuous curve
#property indicator_style2  STYLE_SOLID
//---- indicator 2 line width is equal to 1
#property indicator_width2  1
//---- displaying the indicator line label
#property indicator_label2  "XDi Minus"
//+----------------------------------------------+
//|  ADX indicator drawing parameters            |
//+----------------------------------------------+
//---- drawing the indicator 3 as a line
#property indicator_type3   DRAW_LINE
//---- blue color is used for the indicator ADX line
#property indicator_color3  Blue
//---- the indicator 3 line is a continuous curve
#property indicator_style3  STYLE_SOLID
//---- indicator 3 line width is equal to 1
#property indicator_width3  1
//---- displaying the indicator line label
#property indicator_label3  "XADX"
//+----------------------------------------------+
//| Horizontal levels display parameters         |
//+----------------------------------------------+
#property indicator_level1 60.0
#property indicator_level2 40.0
#property indicator_level3 20.0
#property indicator_levelcolor Gray
#property indicator_levelstyle STYLE_DASHDOTDOT
//+-----------------------------------+
//|  Averagings classes description   |
//+-----------------------------------+
#include <SmoothAlgorithms.mqh> 
//+-----------------------------------+
//---- declaration of the CXMA class variables from the SmoothAlgorithms.mqh file
CXMA XDIP,XDIM,XADX;
//+-----------------------------------+
//|  Declaration of enumerations      |
//+-----------------------------------+
enum Applied_price_     // Type of constant
  {
   PRICE_CLOSE_ = 1,     // Close
   PRICE_OPEN_,          // Open
   PRICE_HIGH_,          // High
   PRICE_LOW_,           // Low
   PRICE_MEDIAN_,        // Median Price (HL/2)
   PRICE_TYPICAL_,       // Typical Price (HLC/3)
   PRICE_WEIGHTED_,      // Weighted Close (HLCC/4)
   PRICE_SIMPLE,         // Simple Price (OC/2)
   PRICE_QUARTER_,       // Quarted Price (HLOC/4) 
   PRICE_TRENDFOLLOW0_,  // TrendFollow_1 Price 
   PRICE_TRENDFOLLOW1_   // TrendFollow_2 Price 
  };
/*enum Smooth_Method - enumeration is declared in the SmoothAlgorithms.mqh file
  {
   MODE_SMA_,  // SMA
   MODE_EMA_,  // EMA
   MODE_SMMA_, // SMMA
   MODE_LWMA_, // LWMA
   MODE_JJMA,  // JJMA
   MODE_JurX,  // JurX
   MODE_ParMA, // ParMA
   MODE_T3,    // T3
   MODE_VIDYA, // VIDYA
   MODE_AMA,   // AMA
  }; */
//+----------------------------------------------+
//|  Indicator input parameters                  |
//+----------------------------------------------+
input Smooth_Method XMA_Method=MODE_T3; // Histogram smoothing method
input int ADX_Period=14;                // ADX period
input int ADX_Phase=100;                // Smoothing parameter [-100...+100],
input Applied_price_ IPC=PRICE_CLOSE_;  // Applied price
input int Shift=0;                      // Horizontal shift of the indicator in bars
//+----------------------------------------------+
//---- declaration of dynamic arrays that 
//---- will be used as indicator buffers
double DiPlusBuffer[];
double DiMinusBuffer[];
double ADXBuffer[];
//---- declaration of the integer variables for the start of data calculation
int min_rates_di,min_rates_total;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+  
void OnInit()
  {
//---- initialization of variables of the start of data calculation
   min_rates_di=XADX.GetStartBars(XMA_Method,ADX_Period,ADX_Phase);
   min_rates_total=2*min_rates_di+1;
   min_rates_di++;

//---- set DiPlusBuffer[] dynamic array as an indicator buffer
   SetIndexBuffer(0,DiPlusBuffer,INDICATOR_DATA);
//---- performing shift of the beginning of counting of drawing the indicator 1 by min_rates_di
   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,min_rates_di);
//---- setting the indicator values that won't be visible on a chart
   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,EMPTY_VALUE);

//---- set DiMinusBuffer[] dynamic array as an indicator buffer
   SetIndexBuffer(1,DiMinusBuffer,INDICATOR_DATA);
//---- performing shift of the beginning of counting of drawing the indicator 1 by min_rates_di
   PlotIndexSetInteger(1,PLOT_DRAW_BEGIN,min_rates_di);
//---- setting the indicator values that won't be visible on a chart
   PlotIndexSetDouble(1,PLOT_EMPTY_VALUE,EMPTY_VALUE);

//---- set ADXBuffer[] dynamic array as an indicator buffer
   SetIndexBuffer(2,ADXBuffer,INDICATOR_DATA);
//---- performing shift of the beginning of counting of drawing the indicator 3 by min_rates_total
   PlotIndexSetInteger(2,PLOT_DRAW_BEGIN,min_rates_total);
//---- setting the indicator values that won't be visible on a chart
   PlotIndexSetDouble(2,PLOT_EMPTY_VALUE,EMPTY_VALUE);

//---- initializations of a variable for the indicator short name
   string shortname;
   string Smooth=XADX.GetString_MA_Method(XMA_Method);
   StringConcatenate(shortname,"XADX( ",Smooth,", ",ADX_Period,", ",ADX_Phase,", ",EnumToString(IPC),", ",Shift," )");
//---- creating a name for displaying in a separate sub-window and in a tooltip
   IndicatorSetString(INDICATOR_SHORTNAME,shortname);
//---- determination of accuracy of displaying the indicator values
   IndicatorSetInteger(INDICATOR_DIGITS,0);
//----
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,    // number of bars in history at the current tick
                const int prev_calculated,// amount of history in bars at the previous tick
                const datetime &time[],
                const double &open[],
                const double& high[],     // price array of maximums of price for the indicator calculation
                const double& low[],      // price array of minimums of price for the indicator calculation
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
  {
//---- checking the number of bars to be enough for the calculation
   if(rates_total<min_rates_total) return(0);

//---- declarations of local variables 
   int first,bar;
   double DiPlus,DiMinus;
   double Hi,Lo,prevHi,prevLo,prevCl,dTmpP,dTmpN,tr,dTmp;

//---- initialization of the indicator in the OnCalculate() block
   if(prev_calculated>rates_total || prev_calculated<=0)// checking for the first start of the indicator calculation
      first=1;                   // starting index for calculation of all bars
   else first=prev_calculated-1; // starting index for calculation of new bars

//---- main indicator calculation loop
   for(bar=first; bar<rates_total && !IsStopped(); bar++)
     {
      Hi=high[bar];
      prevHi=high[bar-1];

      Lo=low[bar];
      prevLo=low[bar-1];
      prevCl=close[bar-1];

      dTmpP=Hi-prevHi;
      dTmpN=prevLo-Lo;

      if(dTmpP<0.0) dTmpP=0.0;
      if(dTmpN<0.0) dTmpN=0.0;

      if(dTmpP>dTmpN) dTmpN=0.0;
      else
        {
         if(dTmpP<dTmpN) dTmpP=0.0;
         else
           {
            dTmpP=0.0;
            dTmpN=0.0;
           }
        }

      tr=MathMax(MathMax(MathAbs(Hi-Lo),MathAbs(Hi-prevCl)),MathAbs(Lo-prevCl));
      //---
      if(tr!=0.0)
        {
         DiPlus=100.0*dTmpP/tr;
         DiMinus=100.0*dTmpN/tr;
        }
      else
        {
         DiPlus=0.0;
         DiMinus=0.0;
        }

      DiPlusBuffer [bar]=XDIP.XMASeries(1,prev_calculated,rates_total,XMA_Method,ADX_Phase,ADX_Period,DiPlus, bar,false);
      DiMinusBuffer[bar]=XDIM.XMASeries(1,prev_calculated,rates_total,XMA_Method,ADX_Phase,ADX_Period,DiMinus,bar,false);

      dTmp=DiPlusBuffer[bar]+DiMinusBuffer[bar];

      if(dTmp!=0.0) dTmp=100.0*MathAbs((DiPlusBuffer[bar]-DiMinusBuffer[bar])/dTmp);
      else          dTmp=0.0;

      ADXBuffer[bar]=XADX.XMASeries(min_rates_di,prev_calculated,rates_total,XMA_Method,ADX_Phase,ADX_Period,dTmp,bar,false);
     }
//----     
   return(rates_total);
  }
//+------------------------------------------------------------------+