Lot calculator_v1

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

//|                                               Lot Calculator.mq5 |

//|                                         Copyleft 2018, zebedeig |

//|                           https://www.mql5.com/en/users/zebedeig |

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



#property copyright    "Copyleft 2018, by zebedeig"

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

#property version      "1.00"

#property description  "Tool used to calculate the correct lot size to trade, given a fixed risk and a number of pips."

#property description  "Simply enter the number of pips of your desired stop loss order, and the indicator will show you "

#property description  "the number of lots to trade based on your total account amount, your account currency and present chart currency pair."



#property strict

#property indicator_chart_window

#property indicator_plots 0



#define MODE_TICKVALUE 

#define MODE_TICKSIZE 

#define MODE_DIGITS



input int Pips = 165; //  07<5@ AB>?0 2 ?8?A0E

input double Risk = 0.02; // 0H 65;05<K9 @8A: 2 ?@>F5=B0E 

double point;

double freeMargin = 0;

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

//| Custom indicator initialization function                         |

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



int OnInit()

{

  // Broker digits

  point = _Point;



  double Digits = _Digits;

  if((_Digits == 3) || (_Digits == 5))

  {

    point*=1;

  }

  return(INIT_SUCCEEDED);

}



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

//| Custom indicator de-init function                         |

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



void OnDeinit(const int reason)

{

  Comment("");  // Cleanup

  Print(__FUNCTION__,"_UninitReason = ",getUninitReasonText(_UninitReason));

  return;

}



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

//| Custom indicator iteration function                              |

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



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[]

                )

{

  string CommentString = "";



  string DepositCurrency = AccountInfoString(ACCOUNT_CURRENCY);

 

  double freeMargin = AccountInfoDouble(ACCOUNT_BALANCE);

  

 



  //double PipValue = ((((SymbolInfoDouble(Symbol(), SYMBOL_TRADE_TICK_VALUE))*point)/(SymbolInfoDouble(Symbol(),SYMBOL_TRADE_TICK_SIZE))) * LotSize);

  double PipValue = (((SymbolInfoDouble(Symbol(), SYMBOL_TRADE_TICK_VALUE))*point)/(SymbolInfoDouble(Symbol(),SYMBOL_TRADE_TICK_SIZE)));

  

  double lots = Risk * freeMargin / (PipValue * Pips);

  

  // Truncate lot quantity to 2 decimal digits without rounding it

  lots = floor(lots * 100) / 100;



  CommentString+="\n" + "0H 10;0=A: "+ DepositCurrency + " " + DoubleToString(freeMargin, 2) + "\n";

  CommentString+="0H @8A:: " + DoubleToString(Risk * 100, 0) + "%\n";

  CommentString+="0H @8A:: " + DepositCurrency + " " + DoubleToString(Risk * freeMargin, 2) + "\n";

  CommentString+="-----------------------------------------------------------------\n";

  CommentString+="!B>8<>ABL ?C=:B0 " + Symbol() + ": " + DepositCurrency + " " + DoubleToString(PipValue, 3) + "\n";

  CommentString+="0:A8<0;L=K9 ;>B " + Symbol() + " 4;O 20H53> @8A:0 =0 A45;:C 2 " + (string)Pips + " ?8?A>2: " + DoubleToString(lots, 2) + "\n";

  CommentString+="-----------------------------------------------------------------\n";



  Comment(CommentString);



  //--- return value of prev_calculated for next call

  return(rates_total);

}



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

//| Custom functions                                                 |

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



string getUninitReasonText(int reasonCode) // Return reason for De-init function

{

  string text="";



  switch(reasonCode)

  {

  case REASON_ACCOUNT:

    text="Account was changed";

    break;

  case REASON_CHARTCHANGE:

    text="Symbol or timeframe was changed";

    break;

  case REASON_CHARTCLOSE:

    text="Chart was closed";

    break;

  case REASON_PARAMETERS:

    text="Input-parameter was changed";

    break;

  case REASON_RECOMPILE:

    text="Program "+__FILE__+" was recompiled";

    break;

  case REASON_REMOVE:

    text="Program "+__FILE__+" was removed from chart";

    break;

  case REASON_TEMPLATE:

    text="New template was applied to chart";

    break;

  default:

    text="Another reason";

  }



  return text;

}



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