Fibonacci_Retrace

ÿþ//--- description

#property copyright "Copyright © 2021, Dark Ryd3r"

#property link      "https://twitter.com/DarkRyd3r"

#property version   "1.00"

#property description "Fibonacci Retracements with Custom Values"



#property script_show_inputs



input string               Fib_Levels=      "0.382,0.618,0.786,0.886,0.942";      //Enter Custom Fibonacci Level seperated by commas



double levels_values[];                 // Array of level values

string levels_descriptions[] = {};      // Array of level descriptions



//--- input parameters of the script

string          InpName="Fibonacci Retracements";      // Object name

int             InpDate1=10;               // 1 st point's date, %

int             InpPrice1=65;              // 1 st point's price, %

int             InpDate2=90;               // 2 nd point's date, %

int             InpPrice2=85;              // 2 nd point's price, %

input color     InpColor=clrAqua;          // Object color

input           ENUM_LINE_STYLE InpStyle=STYLE_DASHDOT; // Line style

input int       InpWidth=1;                // Line width

bool            InpBack=false;             // Background object

bool            InpSelection=true;         // Highlight to move

input bool      InpRayLeft=false;          // Object's continuation to the left

input bool      InpRayRight=true;          // Object's continuation to the right

bool            InpHidden=true;            // Hidden in the object list

long            InpZOrder=0;               // Priority for mouse click

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

//| Create Fibonacci Retracement by the given coordinates            |

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

bool FiboLevelsCreate(const long            chart_ID=0,        // chart's ID

                      const string          name="Fibo",       // object name

                      const int             sub_window=0,      // subwindow index

                      datetime              time1=0,           // first point time

                      double                price1=0,          // first point price

                      datetime              time2=0,           // second point time

                      double                price2=0,          // second point price

                      const color           clr=clrRed,        // object color

                      const ENUM_LINE_STYLE style=STYLE_SOLID, // object line style

                      const int             width=1,           // object line width

                      const bool            back=false,        // in the background

                      const bool            selection=true,    // highlight to move

                      const bool            ray_left=false,    // object's continuation to the left

                      const bool            ray_right=false,   // object's continuation to the right

                      const bool            hidden=true,       // hidden in the object list

                      const long            z_order=0) {       // priority for mouse click

//--- set anchor points' coordinates if they are not set

   ChangeFiboLevelsEmptyPoints(time1,price1,time2,price2);

   StringToDoubleArray(Fib_Levels,levels_values);

//--- reset the error value

   ResetLastError();

//--- Create Fibonacci Retracement by the given coordinates

   if(!ObjectCreate(chart_ID,name,OBJ_FIBO,sub_window,time1,price1,time2,price2)) {

      Print(__FUNCTION__,

            ": failed to create \"Fibonacci Retracement\"! Error code = ",GetLastError());

      return(false);

   }

//--- set color

   ObjectSetInteger(chart_ID,name,OBJPROP_COLOR,clr);

//--- set line style

   ObjectSetInteger(chart_ID,name,OBJPROP_STYLE,style);

//--- set line width

   ObjectSetInteger(chart_ID,name,OBJPROP_WIDTH,width);

//--- display in the foreground (false) or background (true)

   ObjectSetInteger(chart_ID,name,OBJPROP_BACK,back);

//--- enable (true) or disable (false) the mode of highlighting the channel for moving

//--- when creating a graphical object using ObjectCreate function, the object cannot be

//--- highlighted and moved by default. Inside this method, selection parameter

//--- is true by default making it possible to highlight and move the object

   ObjectSetInteger(chart_ID,name,OBJPROP_SELECTABLE,selection);

   ObjectSetInteger(chart_ID,name,OBJPROP_SELECTED,selection);

//--- enable (true) or disable (false) the mode of continuation of the object's display to the left

   ObjectSetInteger(chart_ID,name,OBJPROP_RAY_LEFT,ray_left);

//--- enable (true) or disable (false) the mode of continuation of the object's display to the right

   ObjectSetInteger(chart_ID,name,OBJPROP_RAY_RIGHT,ray_right);

//--- hide (true) or display (false) graphical object name in the object list

   ObjectSetInteger(chart_ID,name,OBJPROP_HIDDEN,hidden);

//--- set the priority for receiving the event of a mouse click in the chart

   ObjectSetInteger(chart_ID,name,OBJPROP_ZORDER,z_order);

//--- successful execution

   return(true);

}





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

//| Check the values of Fibonacci Retracement anchor points and set  |

//| default values for empty ones                                    |

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

void ChangeFiboLevelsEmptyPoints(datetime &time1,double &price1,

                                 datetime &time2,double &price2) {

//--- if the second point's time is not set, it will be on the current bar

   if(!time2)

      time2=TimeCurrent();

//--- if the second point's price is not set, it will have Bid value

   if(!price2)

      price2=SymbolInfoDouble(Symbol(),SYMBOL_BID);

//--- if the first point's time is not set, it is located 9 bars left from the second one

   if(!time1) {

      //--- array for receiving the open time of the last 10 bars

      datetime temp[10];

      CopyTime(Symbol(),Period(),time2,10,temp);

      //--- set the first point 9 bars left from the second one

      time1=temp[0];

   }

//--- if the first point's price is not set, move it 200 points below the second one

   if(!price1)

      price1=price2-200*SymbolInfoDouble(Symbol(),SYMBOL_POINT);

}

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

//| Script program start function                                    |

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

void OnStart() {

//--- check correctness of the input parameters

   if(InpDate1<0 || InpDate1>100 || InpPrice1<0 || InpPrice1>100 ||

         InpDate2<0 || InpDate2>100 || InpPrice2<0 || InpPrice2>100) {

      Print("Error! Incorrect values of input parameters!");

      return;

   }

//--- number of visible bars in the chart window

   int bars=(int)ChartGetInteger(0,CHART_VISIBLE_BARS);

//--- price array size

   int accuracy=1000;

//--- arrays for storing the date and price values to be used

//--- for setting and changing the coordinates of Fibonacci Retracement anchor points

   datetime date[];

   double   price[];

//--- memory allocation

   ArrayResize(date,bars);

   ArrayResize(price,accuracy);

//--- fill the array of dates

   ResetLastError();

   if(CopyTime(Symbol(),Period(),0,bars,date)==-1) {

      Print("Failed to copy time values! Error code = ",GetLastError());

      return;

   }

//--- fill the array of prices

//--- find the highest and lowest values of the chart

   double max_price=ChartGetDouble(0,CHART_PRICE_MAX);

   double min_price=ChartGetDouble(0,CHART_PRICE_MIN);

//--- define a change step of a price and fill the array

   double step=(max_price-min_price)/accuracy;

   for(int i=0; i<accuracy; i++)

      price[i]=min_price+i*step;

//--- define points for drawing Fibonacci Retracement

   int d1=InpDate1*(bars-1)/100;

   int d2=InpDate2*(bars-1)/100;

   int p1=InpPrice1*(accuracy-1)/100;

   int p2=InpPrice2*(accuracy-1)/100;

//--- create an object

   if(!FiboLevelsCreate(0,InpName,0,date[d1],price[p1],date[d2],price[p2],InpColor,

                        InpStyle,InpWidth,InpBack,InpSelection,InpRayLeft,InpRayRight,InpHidden,InpZOrder)) {

      return;

   }

   SetFiboLevels(InpName,levels_values);

   SetFiboDescriptions(InpName, levels_descriptions);

//--- redraw the chart and wait for 1 second

   ChartRedraw();

   Sleep(1000);

}





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

//|                                                                  |

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

void StringToDoubleArray (

   string _haystack,            // source string

   double &_result[],           // array of results

   const string _delimiter=","  // separator

) {

//---

   string haystack_pieces[];  // Array of string fragments

   int pieces_count,          // Number of fragments

       i;                     // Counter

   string current_number="";  // The current string fragment (estimated number)



//--- Split the string into fragments

   pieces_count=StringSplit(_haystack,StringGetCharacter(_delimiter,0),haystack_pieces);

//--- Convert

   if(pieces_count>0) {

      ArrayResize(_result,pieces_count);

      for(i=0; i<pieces_count; i++) {

         StringTrimLeft(haystack_pieces[i]);

         StringTrimRight(haystack_pieces[i]);

         _result[i]=StringToDouble(haystack_pieces[i]);

      }

   } else {

      ArrayResize(_result,1);

      _result[0]=0;

   }

}





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

//| Set number of levels and their parameters                        |

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

void SetFiboLevels(

   string _object_name,                      // Object name

   const double &_levels_values[]            // Array of levels

) {

   int i,                                      // Current level counter

       levels_count=ArraySize(_levels_values); // Total number of levels



//--- Proceed with the implementation



//--- Set the quantity property for the current object

   ObjectSetInteger(0,_object_name,OBJPROP_LEVELS,levels_count);

//--- Set value, color and style for each level.

   for(i=0; i<levels_count; i++) {

      ObjectSetDouble(0,_object_name,OBJPROP_LEVELVALUE,i,_levels_values[i]);

      ObjectSetInteger(0,_object_name,OBJPROP_LEVELCOLOR,i,InpColor);

      ObjectSetInteger(0,_object_name,OBJPROP_LEVELSTYLE,i,InpStyle);

   }

//--- Redraw the chart before finishing

   ChartRedraw(0);

}





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

//| SetFiboDescriptions                                                                 |

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

void SetFiboDescriptions(

   string _object_name,                  // Object name

   const string &_levels_descriptions[]  // Array of descriptions

) {

   int i,                                                                  // Current level counter

       levels_count=(int)ObjectGetInteger(0,_object_name,OBJPROP_LEVELS),  // Real number of levels

       array_size=ArraySize(_levels_descriptions);                         // Number of received descriptions

//Print("LC ", array_size);

//--- Loop  through all levels

   for(i=0; i<levels_count; i++) {

      string Cuttext = DoubleToString(levels_values[i]);

      if(array_size>0 && i<array_size) { // Choose a description from the array

         //--- and write it to the level

         ObjectSetString(0,_object_name,OBJPROP_LEVELTEXT,i,_levels_descriptions[i]);

      } else { // If the descriptions are not enough...

         ObjectSetString(0,_object_name,OBJPROP_LEVELTEXT,i,StringSubstr(Cuttext,0,StringLen(Cuttext)-5));

      }

   }

//--- Redraw the chart before finishing

   ChartRedraw(0);

}

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