wpr_2htf

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

//|                                                     WPR_2HTF.mq5 | 

//|                                         Copyright © 2006, lukas1 | 

//|                                                                  | 

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

#property copyright "Copyright © 2006, lukas1"

#property link ""

//--- indicator version

#property version   "1.60"

#property description "A colored cloud made of WPR oscillators with different timeframes on one chart."

//--- drawing the indicator in a separate window

#property indicator_separate_window

//--- number of indicator buffers is 2

#property indicator_buffers 2 

//--- one plot is used

#property indicator_plots   1

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

//| declaration of constants                     |

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

#define RESET 0               // The constant for getting the command for the indicator recalculation back to the terminal

#define INDICATOR_NAME "WPR"  // A constant for the indicator name

#define SIZE 2                // A constant for the number of calls of the CountIndicator function

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

//| Indicator drawing parameters                 |

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

//--- drawing the indicator as a colored cloud

#property indicator_type1   DRAW_FILLING

//--- the following colors are used as the indicator colors

#property indicator_color1  clrLawnGreen,clrDarkOrange

//--- displaying the indicator label

#property indicator_label1  "WPR_2HTF"

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

//| Parameters of displaying horizontal levels   |

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

#property indicator_level1 -20.0

#property indicator_level2 -50.0

#property indicator_level3 -80.0

#property indicator_levelcolor clrGray

#property indicator_levelstyle STYLE_DASHDOTDOT

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

//| Indicator input parameters                   |

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

input ENUM_TIMEFRAMES TimeFrame1=PERIOD_M15; // Indicator 1 chart period (lower timeframe)

input uint            WPRPeriod1=7;

input ENUM_TIMEFRAMES TimeFrame2=PERIOD_H4;  // Indicator 2 chart period (higher timeframe)

input uint            WPRPeriod2=7;

input int             Shift=0;               // Horizontal shift of the indicator in bars

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

//--- declaration of dynamic arrays that will be used as indicator buffers

double Ind1Buffer[];

double Ind2Buffer[];

//--- declaration of integer variables for the start of data calculation

int min_rates_total;

//--- declaration of integer variables for the indicators handles

int Ind1_Handle,Ind2_Handle;

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

//| Getting a timeframe as a string                                  |

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

string GetStringTimeframe(ENUM_TIMEFRAMES timeframe)

  {return(StringSubstr(EnumToString(timeframe),7,-1));}

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

//| Custom indicator initialization function                         | 

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

int OnInit()

  {

//--- checking correctness of the chart periods

   if(!TimeFramesCheck(INDICATOR_NAME,TimeFrame1,TimeFrame2)) return(INIT_FAILED);

//--- initialization of variables 

   min_rates_total=2;

//--- getting  the handle of the WPR 1 indicator

   Ind1_Handle=iWPR(Symbol(),TimeFrame1,WPRPeriod1);

   if(Ind1_Handle==INVALID_HANDLE)

     {

      Print(" Failed to get handle of the WPR 1 indicator");

      return(INIT_FAILED);

     }

//--- getting  the handle of the WPR 2 indicator

   Ind2_Handle=iWPR(Symbol(),TimeFrame2,WPRPeriod2);

   if(Ind2_Handle==INVALID_HANDLE)

     {

      Print(" Failed to get handle of the WPR 2 indicator");

      return(INIT_FAILED);

     }

//--- Initialize indicator buffers

   IndInit(0,Ind1Buffer);

   IndInit(1,Ind2Buffer);

   PlotInit(0,0.0,min_rates_total,Shift);

//---- Creating a name for displaying in a separate sub-window and in tooltip

   string shortname;

   StringConcatenate(shortname,INDICATOR_NAME,"(",GetStringTimeframe(TimeFrame1),", ",GetStringTimeframe(TimeFrame2),")");

//---

   IndicatorSetString(INDICATOR_SHORTNAME,shortname);

//--- determining the accuracy of the indicator values

   IndicatorSetInteger(INDICATOR_DIGITS,0);

//--- initialization end

   return(INIT_SUCCEEDED);

  }

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

//| Custom iteration function                                        | 

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

int OnCalculate(const int rates_total,    // number of bars in history at the current tick

                const int prev_calculated,// amount of history in bars at the previous tick

                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[])

  {

//--- checking if the number of bars is enough for the calculation

   if(rates_total<min_rates_total) return(RESET);

   if(BarsCalculated(Ind1_Handle)<Bars(Symbol(),TimeFrame1)) return(prev_calculated);

   if(BarsCalculated(Ind2_Handle)<Bars(Symbol(),TimeFrame2)) return(prev_calculated);

//--- apply timeseries indexing to array elements  

   ArraySetAsSeries(time,true);

//---

   if(!CountIndicator(0,NULL,TimeFrame1,Ind1_Handle,0,Ind1Buffer,time,rates_total,prev_calculated,min_rates_total)) return(RESET);

   if(!CountIndicator(1,NULL,TimeFrame2,Ind2_Handle,0,Ind2Buffer,time,rates_total,prev_calculated,min_rates_total)) return(RESET);

//---     

   return(rates_total);

  }

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

//| Indicator buffer initialization                                  |

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

void IndInit(int Number,double &Buffer[])

  {

//--- set dynamic array as an indicator buffer

   SetIndexBuffer(Number,Buffer,INDICATOR_DATA);

//--- indexing elements in the buffer as in timeseries

   ArraySetAsSeries(Buffer,true);

  }

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

//| Indicator buffer initialization                                  |

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

void PlotInit(int Number,double Empty_Value,int Draw_Begin,int nShift)

  {

//--- shifting the start of drawing of the indicator

   PlotIndexSetInteger(Number,PLOT_DRAW_BEGIN,Draw_Begin);

//--- setting the indicator values that won't be visible on a chart

   PlotIndexSetDouble(Number,PLOT_EMPTY_VALUE,Empty_Value);

//--- shifting the indicator 2 horizontally by Shift

   PlotIndexSetInteger(Number,PLOT_SHIFT,nShift);

  }

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

//| CountLine                                                        |

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

bool CountIndicator(uint     Numb,            // The number of the CountLine function in the list in the indicator code (starting number - 0)

                    string   Symb,            // Chart symbol

                    ENUM_TIMEFRAMES TFrame,   // Chart period

                    int      IndHandle,       // The handle of the processed indicator

                    uint     BuffNumb,        // The number of the buffer of the processed indicator

                    double&  IndBuf[],        // receiving buffer of the indicator

                    const datetime& iTime[],  // Timeseries of time

                    const int Rates_Total,    // amount of history in bars on the current tick

                    const int Prev_Calculated,// amount of history in bars at the previous tick

                    const int Min_Rates_Total)// minimum amount of history in bars for calculation

  {

//---

   static int LastCountBar[SIZE];

   datetime IndTime[1];

   int limit;

//--- calculations of the necessary amount of data to be copied

//--- and the 'limit' starting index for the bars recalculation loop

   if(Prev_Calculated>Rates_Total || Prev_Calculated<=0)// checking for the first start of the indicator calculation

     {

      limit=Rates_Total-Min_Rates_Total-1; // starting index for calculation of all bars

      LastCountBar[Numb]=limit;

     }

   else limit=LastCountBar[Numb]+Rates_Total-Prev_Calculated; // Starting index for calculation of new bars 

//--- main indicator calculation loop

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

     {

      //---- reset the contents of the indicator buffers for calculation

      IndBuf[bar]=0.0;

      //--- Copy new data to the IndTime array

      if(CopyTime(Symbol(),TFrame,iTime[bar],1,IndTime)<=0) return(RESET);

      //---

      if(iTime[bar]>=IndTime[0] && iTime[bar+1]<IndTime[0])

        {

         LastCountBar[Numb]=bar;

         double Arr[1];

         //--- Copy new data to the Arr array

         if(CopyBuffer(IndHandle,BuffNumb,iTime[bar],1,Arr)<=0) return(RESET);

         IndBuf[bar]=Arr[0];

        }

      else IndBuf[bar]=IndBuf[bar+1];

     }

//---     

   return(true);

  }

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

//| TimeFramesCheck()                                                |

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

bool TimeFramesCheck(string IndName,

                     ENUM_TIMEFRAMES TFrame1, //Indicator 1 chart period (smallest timeframe)

                     ENUM_TIMEFRAMES TFrame2) //Indicator 3 chart period (highest timeframe)

  {

//--- checking correctness of the chart periods

   if(TFrame1<Period() && TFrame1!=PERIOD_CURRENT)

     {

      Print("Chart 1 period for the "+IndName+" indicator cannot be less than the period of the current chart!");

      Print ("You must change the indicator input parameters!");

      return(RESET);

     }



   if(TFrame2<=TFrame1)

     {

      Print ("Chart 2 period for the "+IndName+" indicator should be greater than the period of chart 1!");

      Print ("You must change the indicator input parameters!");

      return(RESET);

     }

//---

   return(true);

  }

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