MA HISTOGRAM v 1.00

ÿþ//+------------------------------------------------------------------+

//|                                                      ProjectName |

//|                                      Copyright 2018, CompanyName |

//|                                       http://www.companyname.net |

//+------------------------------------------------------------------+

#property copyright "Copyright 2020, Szymon PalczyD
ski"

#property link      "https://www.mql5.com/en/users/stiopa"

#property version   "1.00"

#property strict

#property indicator_chart_window

#property indicator_buffers 4

extern int   Period_ma=6;//Period



double Buffer1[];

double Buffer2[];

double Buffer3[];

int OnInit()

  {

   EventSetMillisecondTimer(100);

   IndicatorShortName("MA_HISTOGRAM");

   SetIndexBuffer(1,Buffer1);

   SetIndexStyle(1,DRAW_NONE,EMPTY,2,clrRed);

   SetIndexBuffer(2,Buffer2);

   SetIndexStyle(2,DRAW_HISTOGRAM,DRAW_LINE,3,clrRed);

   SetIndexBuffer(3,Buffer3);

   SetIndexStyle(3,DRAW_HISTOGRAM,DRAW_LINE,3,clrBlue);

   return(INIT_SUCCEEDED);

  }

//+------------------------------------------------------------------+

//|                                                                  |

//+------------------------------------------------------------------+

void OnDeinit(const int reason)

  {

   EventKillTimer();

  }

//+------------------------------------------------------------------+

//|                                                                  |

//+------------------------------------------------------------------+

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[])

  {

   return(rates_total);

  }

//+------------------------------------------------------------------+

//|                                                                  |

//+------------------------------------------------------------------+

void OnTimer()

  {

   SetIndexStyle(2,DRAW_HISTOGRAM,DRAW_LINE,ScaleGet(0),clrRed);

   SetIndexStyle(3,DRAW_HISTOGRAM,DRAW_LINE,ScaleGet(0),clrBlue);

   double Sum;

   int shift;

   int N_bars=WindowFirstVisibleBar()-Period_ma;

   for(shift=N_bars; shift>=0; shift--)

     {

      Sum=0.0;

      for(int shift2=0; shift2<Period_ma; shift2++)

         Sum+=iMA(NULL,0,Period_ma,0,MODE_SMMA,PRICE_MEDIAN,shift+shift2);



      Buffer1[shift]=Sum/Period_ma;

      Buffer2[shift]=Buffer1[shift+1];



      Buffer2[shift]=Buffer1[shift]-(Buffer1[shift]-Buffer2[shift])*2;

      Buffer3[shift]=Buffer1[shift]+(Buffer1[shift]-Buffer2[shift])*2;

     }

  }



//+------------------------------------------------------------------+

//|                                                                  |

//+------------------------------------------------------------------+

int ScaleGet(const long chart_ID=0)

  {

   long result=-1;

   ResetLastError();

   if(!ChartGetInteger(chart_ID,CHART_SCALE,0,result))

     {

      Print(__FUNCTION__+", Error Code = ",GetLastError());

     }

   return((int)result);

  }

//+------------------------------------------------------------------+