BTF_BB

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

//|                                                       BTF_BB.mq5 |

//|                        Copyright 2018, MetaQuotes Software Corp. |

//|                                                 https://mql5.com |

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

#property copyright "Copyright 2018, MetaQuotes Software Corp."

#property link      "https://mql5.com"

#property version   "1.00"

#property description "Bigger Time Frame Bollinger Bands"

#property indicator_chart_window

#property indicator_buffers 6

#property indicator_plots   3

//--- plot Top

#property indicator_label1  "BB Top"

#property indicator_type1   DRAW_LINE

#property indicator_color1  clrDodgerBlue

#property indicator_style1  STYLE_SOLID

#property indicator_width1  1

//--- plot Middle

#property indicator_label2  "BB Middle"

#property indicator_type2   DRAW_LINE

#property indicator_color2  clrLimeGreen

#property indicator_style2  STYLE_SOLID

#property indicator_width2  1

//--- plot Bottom

#property indicator_label3  "BB Bottom"

#property indicator_type3   DRAW_LINE

#property indicator_color3  clrDodgerBlue

#property indicator_style3  STYLE_SOLID

#property indicator_width3  1

//--- enums

enum ENUM_DRAW_MODE

  {

   DRAW_MODE_STEPS,  // Steps

   DRAW_MODE_SLOPE   // Slope

  };

//---

enum ENUM_INPUT_YES_NO

  {

   INPUT_YES   =  1, // Yes

   INPUT_NO    =  0  // No

  };

//--- input parameters

input uint                 InpPeriod         =  14;               // BB period

input double               InpDeviation      =  2.0;              // BB deviation

input ENUM_APPLIED_PRICE   InpAppliedPrice   =  PRICE_CLOSE;      // BB applied price

input ENUM_TIMEFRAMES      InpTimeframe      =  PERIOD_H1;        // BB timeframe

input ENUM_DRAW_MODE       InpDrawMode       =  DRAW_MODE_STEPS;  // Drawing mode

input ENUM_INPUT_YES_NO    InpShowMiddle     =  INPUT_YES;        // Show middle lines

input ENUM_INPUT_YES_NO    InpUseAlerts      =  INPUT_YES;        // Show alerts

input ENUM_INPUT_YES_NO    InpSendMail       =  INPUT_NO;         // Send mails

input ENUM_INPUT_YES_NO    InpSendPush       =  INPUT_YES;        // Send push-notifications

//--- indicator buffers

double         BufferTop[];

double         BufferMiddle[];

double         BufferBottom[];

double         BufferTopBB[];

double         BufferMiddleBB[];

double         BufferBottomBB[];

//--- global variables

ENUM_TIMEFRAMES   timeframeBB;

double            deviation;

int               period;

int               handle_bb;

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

//| Custom indicator initialization function                         |

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

int OnInit()

  {

//--- timer

   EventSetTimer(90);

//--- set global variables

   period=int(InpPeriod<1 ? 1 : InpPeriod);

   deviation=InpDeviation;

   timeframeBB=(InpTimeframe>Period() ? InpTimeframe : Period());

//--- indicator buffers mapping

   SetIndexBuffer(0,BufferTop,INDICATOR_DATA);

   SetIndexBuffer(1,BufferMiddle,INDICATOR_DATA);

   SetIndexBuffer(2,BufferBottom,INDICATOR_DATA);

   SetIndexBuffer(3,BufferTopBB,INDICATOR_CALCULATIONS);

   SetIndexBuffer(4,BufferMiddleBB,INDICATOR_CALCULATIONS);

   SetIndexBuffer(5,BufferBottomBB,INDICATOR_CALCULATIONS);

//--- setting indicator parameters

   string label=TimeframeToString(timeframeBB)+" Bollinger Bands ("+(string)period+")";

   IndicatorSetString(INDICATOR_SHORTNAME,label);

   IndicatorSetInteger(INDICATOR_DIGITS,Digits());

//--- setting plot buffer parameters

   PlotIndexSetString(0,PLOT_LABEL,TimeframeToString(timeframeBB)+" BB Top("+(string)period+")");

   PlotIndexSetString(1,PLOT_LABEL,TimeframeToString(timeframeBB)+" BB Middle("+(string)period+")");

   PlotIndexSetString(2,PLOT_LABEL,TimeframeToString(timeframeBB)+" BB Bottom("+(string)period+")");

   PlotIndexSetInteger(1,PLOT_DRAW_TYPE,InpShowMiddle);

//--- setting buffer arrays as timeseries

   ArraySetAsSeries(BufferTop,true);

   ArraySetAsSeries(BufferMiddle,true);

   ArraySetAsSeries(BufferBottom,true);

   ArraySetAsSeries(BufferTopBB,true);

   ArraySetAsSeries(BufferMiddleBB,true);

   ArraySetAsSeries(BufferBottomBB,true);

//--- create MA's handles

   ResetLastError();

   handle_bb=iBands(NULL,timeframeBB,period,0,deviation,InpAppliedPrice);

   if(handle_bb==INVALID_HANDLE)

     {

      Print("The ",TimeframeToString(timeframeBB)," iBands("+(string)period+","+DoubleToString(deviation,1)+") object was not created: Error ",GetLastError());

      return INIT_FAILED;

     }

//--- get timeframe

   Time(NULL,timeframeBB,1);

//---

   return(INIT_SUCCEEDED);

  }

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

//| 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[])

  {

//--- #AB0=>2:0 <0AA82>2 1CD5@>2 :0: B09<A5@89

   ArraySetAsSeries(close,true);

   ArraySetAsSeries(time,true);

//--- @>25@:0 :>;8G5AB20 4>ABC?=KE 10@>2

   if(rates_total<fmax(period,4) || Bars(NULL,timeframeBB)<fmax(period,4)) return 0;

//--- @>25@:0 8 @0AGQB :>;8G5AB20 ?@>AG8BK205<KE 10@>2

   int limit=rates_total-prev_calculated;

   if(limit>1)

     {

      limit=rates_total-1;

      ArrayInitialize(BufferTop,EMPTY_VALUE);

      ArrayInitialize(BufferMiddle,EMPTY_VALUE);

      ArrayInitialize(BufferBottom,EMPTY_VALUE);

      ArrayInitialize(BufferTopBB,0);

      ArrayInitialize(BufferMiddleBB,0);

      ArrayInitialize(BufferBottomBB,0);

     }

//--- >43>B>2:0 40==KE

   if(Time(NULL,timeframeBB,1)==0)

      return 0;

   int bars=(timeframeBB==Period() ? rates_total : Bars(NULL,timeframeBB));

   int count=(limit>1 ? fmin(bars,rates_total) : 1),copied=0;

   copied=CopyBuffer(handle_bb,UPPER_BAND,0,count,BufferTopBB);

   if(copied!=count) return 0;

   copied=CopyBuffer(handle_bb,BASE_LINE,0,count,BufferMiddleBB);

   if(copied!=count) return 0;

   copied=CopyBuffer(handle_bb,LOWER_BAND,0,count,BufferBottomBB);

   if(copied!=count) return 0;

      

//---  0AGQB 8=48:0B>@0

   for(int i=limit; i>=0 && !IsStopped(); i--)

     {

      DataConversion(rates_total,NULL,timeframeBB,i,BufferTopBB,BufferTop,InpDrawMode);

      DataConversion(rates_total,NULL,timeframeBB,i,BufferMiddleBB,BufferMiddle,InpDrawMode);

      DataConversion(rates_total,NULL,timeframeBB,i,BufferBottomBB,BufferBottom,InpDrawMode);

     }

//--- !83=0;K

   static datetime last_time=0;

   string Alerts="";

   if(time[0]>last_time && (close[0]>BufferTop[0] || (close[0]<BufferBottom[0] && BufferBottom[0]!=EMPTY_VALUE)))

     {

      string pos=(close[0]>BufferTop[0] ? "above the Upper" : "below the Lower");

      string message=Symbol()+", "+TimeframeToString(Period())+": Price is "+pos+" "+TimeframeToString(timeframeBB)+" Bollinger Band";

      if(InpUseAlerts) Alert(message);

      if(InpSendMail  && TerminalInfoInteger(TERMINAL_EMAIL_ENABLED)) SendMail("Bigger Time Frame Bollinger Bands Signal",message);

      if(InpSendPush && TerminalInfoInteger(TERMINAL_NOTIFICATIONS_ENABLED)) SendNotification(message);

      last_time=TimeCurrent();

     }



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

   return(rates_total);

  }

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

//| Custom indicator timer function                                  |

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

void OnTimer()

  {

   Time(NULL,timeframeBB,1);

  }  

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

//| Transfering data from the source timeframe to current timeframe  |

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

void DataConversion(const int rates_total,

                    const string symbol_name,

                    const ENUM_TIMEFRAMES timeframe_src,

                    const int shift,

                    const double &buffer_src[],

                    double &buffer_dest[],

                    ENUM_DRAW_MODE mode=DRAW_MODE_STEPS

                   )

  {

   if(timeframe_src==Period())

     {

      buffer_dest[shift]=buffer_src[shift];

      return;

     }

   int bar_curr=BarToCurrent(symbol_name,timeframe_src,shift);

   if(bar_curr>rates_total-1)

      return;

   int bar_prev=BarToCurrent(symbol_name,timeframe_src,shift+1);

   int bar_next=(shift>0 ? BarToCurrent(symbol_name,timeframe_src,shift-1) : 0);

   if(bar_prev==WRONG_VALUE || bar_curr==WRONG_VALUE || bar_next==WRONG_VALUE)

      return;

   buffer_dest[bar_curr]=buffer_src[shift];

   if(mode==DRAW_MODE_STEPS)

      for(int j=bar_curr; j>=bar_next; j--)

         buffer_dest[j]=buffer_dest[bar_curr];

   else

     {

      if(bar_prev>rates_total-1) return;

      for(int j=bar_prev; j>=bar_curr; j--)

         buffer_dest[j]=EquationDirect(bar_prev,buffer_dest[bar_prev],bar_curr,buffer_dest[bar_curr],j);

      if(shift==0)

         for(int j=bar_curr; j>=0; j--)

            buffer_dest[j]=buffer_dest[bar_curr];

     }

  }

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

//| >72@0I05B 10@ 7040==>3> B09<D@59<0 :0: 10@ B5:CI53> B09<D@59<0  |

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

int BarToCurrent(const string symbol_name,const ENUM_TIMEFRAMES timeframe_src,const int shift,bool exact=false)

  {

   datetime time=Time(symbol_name,timeframe_src,shift);

   return(time!=0 ? BarShift(symbol_name,Period(),time,exact) : WRONG_VALUE);

  }  

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

//| >72@0I05B A<5I5=85 10@0 ?> 2@5<5=8                              |

//| https://www.mql5.com/ru/forum/743/page11#comment_7010041         |

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

int BarShift(const string symbol_name,const ENUM_TIMEFRAMES timeframe,const datetime time,bool exact=false)

  {

   int res=Bars(symbol_name,timeframe,time+1,UINT_MAX);

   if(exact) if((timeframe!=PERIOD_MN1 || time>TimeCurrent()) && res==Bars(symbol_name,timeframe,time-PeriodSeconds(timeframe)+1,UINT_MAX)) return(WRONG_VALUE);

   return res;

  }

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

//| >72@0I05B Time                                                  |

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

datetime Time(const string symbol_name,const ENUM_TIMEFRAMES timeframe,const int shift)

  {

   datetime array[];

   ArraySetAsSeries(array,true);

   return(CopyTime(symbol_name,timeframe,shift,1,array)==1 ? array[0] : 0);

  }

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

//| #@02=5=85 ?@O<>9                                                 |

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

double EquationDirect(const int left_bar,const double left_price,const int right_bar,const double right_price,const int bar_to_search) 

  {

   return(right_bar==left_bar ? left_price : (right_price-left_price)/(right_bar-left_bar)*(bar_to_search-left_bar)+left_price);

  }

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

//| Timeframe to string                                              |

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

string TimeframeToString(const ENUM_TIMEFRAMES timeframe)

  {

   return StringSubstr(EnumToString(timeframe),7);

  }

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