MFI_Histogram_Round_v1

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

//|                                          MFI_Histogram_Round.mq5 | 

//|                               Copyright © 2016, Nikolay Kositsin | 

//|                              Khabarovsk,   farria@mail.redcom.ru | 

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

#property copyright "Copyright © 2016, Nikolay Kositsin"

#property link "farria@mail.redcom.ru"

//---- =><5@ 25@A88 8=48:0B>@0

#property version   "1.00"

//---- >B@8A>2:0 8=48:0B>@0 2 >B45;L=>< >:=5

#property indicator_separate_window 

//---- :>;8G5AB2> 8=48:0B>@=KE 1CD5@>2 3

#property indicator_buffers 3 

//---- 8A?>;L7>20=> >4=> 3@0D8G5A:>5 ?>AB@>5=85

#property indicator_plots   1

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

//|  >1JO2;5=85 :>=AB0=B              |

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

#define RESET  0 // >=AB0=B0 4;O 2>72@0B0 B5@<8=0;C :><0=4K =0 ?5@5AGQB 8=48:0B>@0

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

//|  0@0<5B@K >B@8A>2:8 8=48:0B>@0   |

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

//---- >B@8A>2:0 8=48:0B>@0 2 2845 38AB>3@0<<K

#property indicator_type1   DRAW_COLOR_HISTOGRAM2

//---- 2 :0G5AB25 F25B>2 8=48:0B>@0 8A?>;L7>20=K

#property indicator_color1  clrMediumTurquoise,clrGray,clrGold

//---- ;8=8O 8=48:0B>@0 - A?;>H=0O

#property indicator_style1 STYLE_SOLID

//---- B>;I8=0 ;8=88 8=48:0B>@0 @02=0 2

#property indicator_width1 2

//---- >B>1@065=85 <5B:8 8=48:0B>@0

#property indicator_label1  "MFI_Histogram"

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

//|  >1JO2;5=85 ?5@5G8A;5=89          |

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

enum ENAM_ROUND_MODE

  {

   X1,  //1

   X2,  //2

   X5,  //5

   X10, //10

   X20, //20

   X50  //50

  };

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

//|  %+  " + "      |

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

input uint                 MFIPeriod=14;           // ?5@8>4 8=48:0B>@0

input ENUM_APPLIED_VOLUME VolumeType=VOLUME_TICK;  // >1JQ< 

input uint                 HighLevel=60;           // C@>25=L ?5@570:C?0

input uint                 LowLevel=40;            // C@>25=L ?5@5?@>40==>AB8

input ENAM_ROUND_MODE      Round=X5;               // C@>25=L >:@C3;5=8O

input int                  Shift=0;                // !4283 8=48:0B>@0 ?> 3>@87>=B0;8 2 10@0E

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

int nRound;

//---- 1JO2;5=85 F5;KE ?5@5<5==KE =0G0;0 >BAGQB0 40==KE

int  min_rates_total;

//---- >1JO2;5=85 48=0<8G5A:8E <0AA82>2, :>B>@K5 1C4CB 2 

// 40;L=59H5< 8A?>;L7>20=K 2 :0G5AB25 8=48:0B>@=KE 1CD5@>2

double UpBuffer[],DnBuffer[],ColorBuffer[];

//---- 1JO2;5=85 F5;KE ?5@5<5==KE 4;O E5=4;>2 8=48:0B>@>2

int MFI_Handle;

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

//| Custom indicator initialization function                         |

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

int OnInit()

  {

//---- =8F80;870F8O ?5@5<5==KE =0G0;0 >BAGQB0 40==KE

   min_rates_total=int(MFIPeriod);

   nRound=int(StringToInteger(StringSubstr(EnumToString(Round),1,-1)));

//---- ?>;CG5=85 E5=4;0 8=48:0B>@0 iMFI

   MFI_Handle=iMFI(NULL,0,MFIPeriod,VolumeType);

   if(MFI_Handle==INVALID_HANDLE)

     {

      Print(" 5 C40;>AL ?>;CG8BL E5=4; 8=48:0B>@0 iMFI");

      return(INIT_FAILED);

     }   

//---- ?@52@0I5=85 48=0<8G5A:>3> <0AA820 2 8=48:0B>@=K9 1CD5@

   SetIndexBuffer(0,UpBuffer,INDICATOR_DATA);

//---- >ACI5AB2;5=85 A42830 =0G0;0 >BAGQB0 >B@8A>2:8 8=48:0B>@0

   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,min_rates_total);

//---- CAB0=>2:0 7=0G5=89 8=48:0B>@0, :>B>@K5 =5 1C4CB 2848<K =0 3@0D8:5

   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,EMPTY_VALUE);

//---- >ACI5AB2;5=85 A42830 8=48:0B>@0 ?> 3>@87>=B0;8 =0 InpKijun

   PlotIndexSetInteger(0,PLOT_SHIFT,Shift);

//---- 8=45:A0F8O M;5<5=B>2 2 1CD5@5 :0: 2 B09<A5@88

   ArraySetAsSeries(UpBuffer,true);



//---- ?@52@0I5=85 48=0<8G5A:>3> <0AA820 2 8=48:0B>@=K9 1CD5@

   SetIndexBuffer(1,DnBuffer,INDICATOR_DATA);

//---- 8=45:A0F8O M;5<5=B>2 2 1CD5@5 :0: 2 B09<A5@88

   ArraySetAsSeries(DnBuffer,true);

//---- ?@52@0I5=85 48=0<8G5A:>3> <0AA820 2 F25B>2>9, 8=45:A=K9 1CD5@   

   SetIndexBuffer(2,ColorBuffer,INDICATOR_COLOR_INDEX);

//---- 8=45:A0F8O M;5<5=B>2 2 1CD5@5 :0: 2 B09<A5@88

   ArraySetAsSeries(ColorBuffer,true);



//--- A>740=85 8<5=8 4;O >B>1@065=8O 2 >B45;L=>< ?>4>:=5 8 2> 2A?;K20NI59 ?>4A:07:5

   IndicatorSetString(INDICATOR_SHORTNAME,"MFI_Histogram("+string(MFIPeriod)+")");

//--- >?@545;5=85 B>G=>AB8 >B>1@065=8O 7=0G5=89 8=48:0B>@0

   IndicatorSetInteger(INDICATOR_DIGITS,0);

//---- :>;8G5AB2>  3>@87>=B0;L=KE C@>2=59 8=48:0B>@0 3   

   IndicatorSetInteger(INDICATOR_LEVELS,3);

//---- 7=0G5=8O 3>@87>=B0;L=KE C@>2=59 8=48:0B>@0   

   IndicatorSetDouble(INDICATOR_LEVELVALUE,0,HighLevel);

   IndicatorSetDouble(INDICATOR_LEVELVALUE,1,50);

   IndicatorSetDouble(INDICATOR_LEVELVALUE,2,LowLevel);

//---- 2 :0G5AB25 F25B>2 ;8=89 3>@87>=B0;L=KE C@>2=59 8A?>;L7>20=K A5@K9 8 @>7>2K9 F25B0  

   IndicatorSetInteger(INDICATOR_LEVELCOLOR,0,clrLightBlue);

   IndicatorSetInteger(INDICATOR_LEVELCOLOR,1,clrGray);

   IndicatorSetInteger(INDICATOR_LEVELCOLOR,2,clrMagenta);

//---- 2 ;8=88 3>@87>=B0;L=>3> C@>2=O 8A?>;L7>20= :>@>B:89 HB@8E-?C=:B8@  

   IndicatorSetInteger(INDICATOR_LEVELSTYLE,0,STYLE_DASHDOTDOT);

   IndicatorSetInteger(INDICATOR_LEVELSTYLE,1,STYLE_DASHDOTDOT);

   IndicatorSetInteger(INDICATOR_LEVELSTYLE,2,STYLE_DASHDOTDOT);

//---- 7025@H5=85 8=8F80;870F88

   return(INIT_SUCCEEDED);

  }

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

//| Custom indicator iteration function                              | 

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

int OnCalculate(

                const int rates_total,    // :>;8G5AB2> 8AB>@88 2 10@0E =0 B5:CI5< B8:5

                const int prev_calculated,// :>;8G5AB2> 8AB>@88 2 10@0E =0 ?@54K4CI5< B8:5

                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[]

                )

  {

//---- ?@>25@:0 :>;8G5AB20 10@>2 =0 4>AB0B>G=>ABL 4;O @0AGQB0

   if(BarsCalculated(MFI_Handle)<rates_total || rates_total<min_rates_total) return(RESET);



//---- >1JO2;5=8O ;>:0;L=KE ?5@5<5==KE

   int to_copy,limit,bar;

   

//---- @0AG5B AB0@B>2>3> =><5@0 limit 4;O F8:;0 ?5@5AG5B0 10@>2

   if(prev_calculated>rates_total || prev_calculated<=0)// ?@>25@:0 =0 ?5@2K9 AB0@B @0AG5B0 8=48:0B>@0

     {

      limit=rates_total-min_rates_total-1; // AB0@B>2K9 =><5@ 4;O @0AG5B0 2A5E 10@>2

     }

   else limit=rates_total-prev_calculated; // AB0@B>2K9 =><5@ 4;O @0AG5B0 =>2KE 10@>2



   to_copy=limit+1;



//---- :>?8@C5< 2=>2L ?>O282H85AO 40==K5 2 <0AA82K

   if(CopyBuffer(MFI_Handle,0,0,to_copy,UpBuffer)<=0) return(RESET);



//---- >A=>2=>9 F8:; @0A:@0A:8 8=48:0B>@0

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

     {

      double MFI=UpBuffer[bar];

      

      if(MFI<50) UpBuffer[bar]=nRound*MathCeil(MFI/nRound);

      else if(MFI>50) UpBuffer[bar]=nRound*MathFloor(MFI/nRound);        

      

      DnBuffer[bar]=50.0;

      int clr=1.0;

      if(UpBuffer[bar]>HighLevel) clr=0.0;

      else if(UpBuffer[bar]<LowLevel) clr=2.0;

      ColorBuffer[bar]=clr;

     }

//----    

   return(rates_total);

  }

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