DEMA_Range_Channel

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

//|                                           DEMA_Range_Channel.mq5 |

//|                               Copyright © 2018, Nikolay Kositsin | 

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

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

#property copyright "Copyright © 2018, Nikolay Kositsin"

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

#property description "DEMA Range Channel"

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

#property version   "1.02"

//---- >B@8A>2:0 8=48:0B>@0 2 3;02=>< >:=5

#property indicator_chart_window 

//---- :>;8G5AB2> 8=48:0B>@=KE 1CD5@>2 9

#property indicator_buffers 9 

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

#property indicator_plots   4

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

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

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

#define RESET 0                            // :>=AB0=B0 4;O 2>72@0B0 B5@<8=0;C :><0=4K =0 ?5@5AG5B 8=48:0B>@0

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

//| 0@0<5B@K >B@8A>2:8 >1;0:0                 |

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

//---- >B@8A>2:0 8=48:0B>@0 2 2845 >1;0:0

#property indicator_type1   DRAW_FILLING

//---- 2 :0G5AB25 F25B0 ;8=88 8=48:0B>@0 8A?>;L7>20= F25B Lavender

#property indicator_color1 clrLavender

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

#property indicator_label1  "DEMA Range Channel"

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

//| 0@0<5B@K >B@8A>2:8 C@>2=59                |

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

//---- >B@8A>2:0 C@>2=59 2 2845 ;8=89

#property indicator_type2   DRAW_LINE

#property indicator_type3   DRAW_LINE

//---- 22K1>@ F25B>2 C@>2=59

#property indicator_color2  clrBlue

#property indicator_color3  clrRed

//---- C@>2=8 - HB@8E?C=:B8@=K5 :@82K5

#property indicator_style2 STYLE_SOLID

#property indicator_style3 STYLE_SOLID

//---- B>;I8=0 C@>2=59 @02=0 1

#property indicator_width2  1

#property indicator_width3  1

//---- >B>1@065=85 <5B>: C@>2=59

#property indicator_label2  "Up Line"

#property indicator_label3  "Down Line"

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

//| 0@0<5B@K >B@8A>2:8 A25G59                 |

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

//---- 2 :0G5AB25 8=48:0B>@0 8A?>;L7>20=K F25B=K5 A25G8

#property indicator_type4   DRAW_COLOR_CANDLES

#property indicator_color4   clrMagenta,clrBrown,clrBlue,clrAqua

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

#property indicator_label4  "Open;High;Low;Close"

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

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

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

input uint  ma_period=14; // 5@8>4 CA@54=5=8O

input uint Shift=3;        // A4283 ?> 3>@87>=B0;8 2 10@0E

input int PriceShift=0;   // c4283 ?> 25@B8:0;8 2 ?C=:B0E

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

//---- >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 ExtOpenBuffer[],ExtHighBuffer[],ExtLowBuffer[],ExtCloseBuffer[],ExtColorBuffer[];

double UpIndBuffer[],DnIndBuffer[],UpLineBuffer[],DnLineBuffer[];

//---- >1JO2;5=85 ?5@5<5==>9 7=0G5=8O 25@B8:0;L=>3> A42830 A@54=59

double dPriceShift;

//---- >1JO2;5=85 F5;>G8A;5==KE ?5@5<5==KE =0G0;0 >BAG5B0 40==KE

int min_rates_total;

//--- >1JO2;5=85 F5;>G8A;5==KE ?5@5<5==KE 4;O E5=4;>2 8=48:0B>@>2

int HInd_Handle,LInd_Handle;

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

//| DEMA_Range_Channel indicator initialization function                | 

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

int OnInit()

  {

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

   min_rates_total=int(ma_period*2);

//---- 8=8F80;870F8O A42830 ?> 25@B8:0;8

   dPriceShift=_Point*PriceShift;



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

   HInd_Handle=iDEMA(Symbol(),PERIOD_CURRENT,ma_period,0,PRICE_HIGH);

   if(HInd_Handle==INVALID_HANDLE)

     {

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

      return(INIT_FAILED);

     }

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

   LInd_Handle=iDEMA(Symbol(),PERIOD_CURRENT,ma_period,0,PRICE_LOW);

   if(LInd_Handle==INVALID_HANDLE)

     {

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

      return(INIT_FAILED);

     }

//---- ?@52@0I5=85 48=0<8G5A:8E <0AA82>2 2 8=48:0B>@=K5 1CD5@K

   SetIndexBuffer(0,UpIndBuffer,INDICATOR_DATA);

   SetIndexBuffer(1,DnIndBuffer,INDICATOR_DATA);

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

   PlotIndexSetInteger(0,PLOT_SHIFT,Shift);

//---- >ACI5AB2;5=85 A42830 =0G0;0 >BAG5B0 >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);

//---- ?@52@0I5=85 48=0<8G5A:8E <0AA82>2 2 8=48:0B>@=K5 1CD5@K

   SetIndexBuffer(2,UpLineBuffer,INDICATOR_DATA);

   SetIndexBuffer(3,DnLineBuffer,INDICATOR_DATA);

//---- CAB0=>2:0 ?>78F88, A :>B>@>9 =0G8=05BAO ;8=89 :0=0;0

   PlotIndexSetInteger(1,PLOT_DRAW_BEGIN,min_rates_total);

   PlotIndexSetInteger(2,PLOT_DRAW_BEGIN,min_rates_total);

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

   PlotIndexSetDouble(1,PLOT_EMPTY_VALUE,EMPTY_VALUE);

   PlotIndexSetDouble(2,PLOT_EMPTY_VALUE,EMPTY_VALUE);

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

   PlotIndexSetInteger(1,PLOT_SHIFT,Shift);

   PlotIndexSetInteger(2,PLOT_SHIFT,Shift);

//---- ?@52@0I5=85 48=0<8G5A:8E <0AA82>2 2 8=48:0B>@=K5 1CD5@K

   SetIndexBuffer(4,ExtOpenBuffer,INDICATOR_DATA);

   SetIndexBuffer(5,ExtHighBuffer,INDICATOR_DATA);

   SetIndexBuffer(6,ExtLowBuffer,INDICATOR_DATA);

   SetIndexBuffer(7,ExtCloseBuffer,INDICATOR_DATA);

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

   SetIndexBuffer(8,ExtColorBuffer,INDICATOR_COLOR_INDEX);

//---- CAB0=>2:0 ?>78F88, A :>B>@>9 =0G8=05BAO ;8=89 :0=0;0

   PlotIndexSetInteger(3,PLOT_DRAW_BEGIN,min_rates_total);

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

   PlotIndexSetDouble(3,PLOT_EMPTY_VALUE,EMPTY_VALUE);

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

   //PlotIndexSetInteger(3,PLOT_SHIFT,Shift);

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

   ArraySetAsSeries(ExtOpenBuffer,true);

   ArraySetAsSeries(ExtHighBuffer,true);

   ArraySetAsSeries(ExtLowBuffer,true);

   ArraySetAsSeries(ExtCloseBuffer,true);

   ArraySetAsSeries(ExtColorBuffer,true);

   ArraySetAsSeries(UpIndBuffer,true);

   ArraySetAsSeries(DnIndBuffer,true);

   ArraySetAsSeries(UpLineBuffer,true);

   ArraySetAsSeries(DnLineBuffer,true);

//---- 8=8F80;870F8O ?5@5<5==>9 4;O :>@>B:>3> 8<5=8 8=48:0B>@0

   string shortname;

   StringConcatenate(shortname,"DEMA_Range_Channel",ma_period,")");

//--- 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,_Digits);

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

   return(INIT_SUCCEEDED);

  }

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

//| DEMA_Range_Channel 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<min_rates_total) return(RESET);

   if(BarsCalculated(HInd_Handle)<rates_total || BarsCalculated(LInd_Handle)<rates_total) return(prev_calculated);



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

   int to_copy,limit;

   double HDEMA[],LDEMA[];

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

   ArraySetAsSeries(open,true);

   ArraySetAsSeries(low,true);

   ArraySetAsSeries(high,true);

   ArraySetAsSeries(close,true);

   ArraySetAsSeries(HDEMA,true);

   ArraySetAsSeries(LDEMA,true);



//--- @0AGQB AB0@B>2>3> =><5@0 limit 4;O F8:;0 ?5@5AGQB0 10@>2

   if(prev_calculated>rates_total || prev_calculated<=0)// ?@>25@:0 =0 ?5@2K9 AB0@B @0AGQB0 8=48:0B>@0

     {

      limit=rates_total-min_rates_total-1; // AB0@B>2K9 =><5@ 4;O @0AGQB0 2A5E 10@>2

     }

   else limit=rates_total-prev_calculated;  // AB0@B>2K9 =><5@ 4;O @0AGQB0 B>;L:> =>2KE 10@>2

   to_copy=limit+1;

   

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

   if(CopyBuffer(HInd_Handle,0,0,to_copy,UpLineBuffer)<=0) return(RESET);

   if(CopyBuffer(LInd_Handle,0,0,to_copy,DnLineBuffer)<=0) return(RESET);

   if(CopyBuffer(HInd_Handle,0,0,to_copy,UpIndBuffer)<=0) return(RESET);

   if(CopyBuffer(LInd_Handle,0,0,to_copy,DnIndBuffer)<=0) return(RESET);

   

//---- >A=>2=>9 F8:; @0AGQB0 8=48:0B>@0

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

     {

      UpLineBuffer[bar]=UpIndBuffer[bar]+=dPriceShift; 

      DnLineBuffer[bar]=DnIndBuffer[bar]-=dPriceShift;

     }

//---- >A=>2=>9 F8:; 8A?@02;5=8O 8 >:@0H820=8O A25G59

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

     {

      ExtOpenBuffer[bar]=ExtCloseBuffer[bar]=ExtHighBuffer[bar]=ExtLowBuffer[bar]=ExtColorBuffer[bar]=EMPTY_VALUE;

      //----

      if(close[bar]>UpLineBuffer[bar+Shift])

        {

         ExtOpenBuffer[bar]=open[bar];

         ExtCloseBuffer[bar]=close[bar];

         ExtHighBuffer[bar]=high[bar];

         ExtLowBuffer[bar]=low[bar];

         if(close[bar]>=open[bar]) ExtColorBuffer[bar]=3;

         else ExtColorBuffer[bar]=2;

        }

      //----

      if(close[bar]<DnLineBuffer[bar+Shift])

        {

         ExtOpenBuffer[bar]=open[bar];

         ExtCloseBuffer[bar]=close[bar];

         ExtHighBuffer[bar]=high[bar];

         ExtLowBuffer[bar]=low[bar];

         if(close[bar]<=open[bar]) ExtColorBuffer[bar]=0;

         else ExtColorBuffer[bar]=1;

        }

     }

//----     

   return(rates_total);

  }

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