AroonOscillator_Histogram

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

//|                                    AroonOscillator_Histogram.mq5 |

//|                               Copyright © 2017, Nikolay Kositsin | 

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

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

//---- 02B>@AB2> 8=48:0B>@0

#property copyright "Copyright © 2011, Nikolay Kositsin"

//---- AAK;:0 =0 A09B 02B>@0

#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 2

#property indicator_buffers 2 

//---- 8A?>;L7>20=> 2A53> >4=> 3@0D8G5A:85 ?>AB@>5=85

#property indicator_plots   1

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

//|  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_HISTOGRAM

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

#property indicator_color1  clrAqua,clrBlue,clrGray,clrPurple,clrMagenta

//---- ;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 A83=0;L=>9 ;8=88

#property indicator_label1  "AroonOscillator"

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

//| E>4=K5 ?0@0<5B@K 8=48:0B>@0                 |

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

input int AroonPeriod= 9;        // ?5@8>4 8=48:0B>@0 

input int HighLevel=+40;         // C@>25=L ?5@570:C?0

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

input int AroonShift = 0;        // A4283 8=48:0B>@0 ?> 3>@87>=B0;8 2 10@0E 

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

//---- >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 ExtLineBuffer[],ExtColorLineBuffer[];

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

//| Custom indicator initialization function                         |

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

void OnInit()

  {

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

   SetIndexBuffer(0,ExtLineBuffer,INDICATOR_DATA);

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

   ArraySetAsSeries(ExtLineBuffer,true);

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

   SetIndexBuffer(1,ExtColorLineBuffer,INDICATOR_COLOR_INDEX);

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

   ArraySetAsSeries(ExtColorLineBuffer,true);



//---- 8=8F80;870F88 ?5@5<5==>9 4;O :>@>B:>3> 8<5=8 8=48:0B>@0

   string shortname;

   StringConcatenate(shortname,"AroonOscillator(",AroonPeriod,")");

//---- >ACI5AB2;5=85 A42830 8=48:0B>@0 1 ?> 3>@87>=B0;8 =0 AroonShift

   PlotIndexSetInteger(0,PLOT_SHIFT,AroonShift);

//---- A>740=85 <5B:8 4;O >B>1@065=8O 2 :=5 40==KE

   PlotIndexSetString(0,PLOT_LABEL,shortname);

//---- 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,shortname);

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

   IndicatorSetInteger(INDICATOR_DIGITS,0);

//---- 70?@5B =0 >B@8A>2:C 8=48:0B>@>< ?CABKE 7=0G5=89

   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,EMPTY_VALUE);

//---- :>;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,1,0);

   IndicatorSetDouble(INDICATOR_LEVELVALUE,2,LowLevel);

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

   IndicatorSetInteger(INDICATOR_LEVELCOLOR,0,clrBlue);

   IndicatorSetInteger(INDICATOR_LEVELCOLOR,1,clrGray);

   IndicatorSetInteger(INDICATOR_LEVELCOLOR,2,clrPurple);

//---- 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);

//----

  }

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

//| 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 @0AG5B0

   if(rates_total<AroonPeriod) return(0);



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

   int limit,highest,lowest;



//---- @0AG5B AB0@B>2>3> =><5@0 first 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-AroonPeriod-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

   

//---- 8=45:A0F8O M;5<5=B>2 2 <0AA820E :0: 2 B09<A5@8OE  

   ArraySetAsSeries(High,true);

   ArraySetAsSeries(Low,true);   



//---- >A=>2=>9 F8:; @0AG5B0 8=48:0B>@0

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

     {

      highest=ArrayMaximum(High,bar,AroonPeriod);

      lowest=ArrayMinimum(Low,bar,AroonPeriod);

      //----

      ExtLineBuffer[bar]=-100*(highest-lowest)/AroonPeriod;

      

      int clr=2.0;

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

      else if(ExtLineBuffer[bar]>0.0) clr=1.0;

      else if(ExtLineBuffer[bar]<LowLevel) clr=4.0;

      else if(ExtLineBuffer[bar]<0) clr=3.0;

      ExtColorLineBuffer[bar]=clr;

     }

//----     

   return(rates_total);

  }

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