Fibonacci_Expansion

ÿþ//--- description

#property copyright "Copyright © 2021, Dark Ryd3r"

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

#property version   "1.00"

#property description "Fibonacci Expansion with Custom Values"



#property script_show_inputs



input string               Fib_Levels=      "1.618,2.618,3.618,4.236";      //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="FiboExpansion";   // Object name 

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

int             InpPrice1=55;              // 1 st point's price, % 

int             InpDate2=30;               // 2 nd point's date, % 

int             InpPrice2=10;              // 2 nd point's price, % 

int             InpDate3=80;               // 3 rd point's date, % 

int             InpPrice3=75;              // 3 rd point's price, % 

input color           InpColor=clrAqua;           // Object color 

input ENUM_LINE_STYLE InpStyle=STYLE_DASHDOT; // Style of lines 

input int             InpWidth=1;                // Width of the lines 

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 Extension by the given coordinates              |

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

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

                         const string          name="FiboExpansion", // channel 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

                         datetime              time3=0,              // third point time

                         double                price3=0,             // third point price

                         const color           clr=clrRed,           // object color

                         const ENUM_LINE_STYLE style=STYLE_SOLID,    // style of the lines

                         const int             width=1,              // width of the lines

                         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

   ChangeFiboExpansionEmptyPoints(time1,price1,time2,price2,time3,price3);

   StringToDoubleArray(Fib_Levels,levels_values);

//--- reset the error value

   ResetLastError();

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

   if(!ObjectCreate(chart_ID,name,OBJ_EXPANSION,sub_window,time1,price1,time2,price2,time3,price3)) {

      Print(__FUNCTION__,

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

      return(false);

   }

//--- set the object's color

   ObjectSetInteger(chart_ID,name,OBJPROP_COLOR,clr);

//--- set the line style

   ObjectSetInteger(chart_ID,name,OBJPROP_STYLE,style);

//--- set width of the lines

   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 visualization 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 visualization 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);

}



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

//| Move Fibonacci Expansion anchor point                            |

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

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

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

                              const int    point_index=0,        // anchor point index

                              datetime     time=0,               // anchor point time coordinate

                              double       price=0) {            // anchor point price coordinate

//--- if point position is not set, move it to the current bar having Bid price

   if(!time)

      time=TimeCurrent();

   if(!price)

      price=SymbolInfoDouble(Symbol(),SYMBOL_BID);

//--- reset the error value

   ResetLastError();

//--- move the anchor point

   if(!ObjectMove(chart_ID,name,point_index,time,price)) {

      Print(__FUNCTION__,

            ": failed to move the anchor point! Error code = ",GetLastError());

      return(false);

   }

//--- successful execution

   return(true);

}



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

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

//| default values for empty ones                                    |

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

void ChangeFiboExpansionEmptyPoints(datetime &time1,double &price1,datetime &time2,

                                    double &price2,datetime &time3,double &price3) {

//--- if the third (right) point's time is not set, it will be on the current bar

   if(!time3)

      time3=TimeCurrent();

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

   if(!price3)

      price3=SymbolInfoDouble(Symbol(),SYMBOL_BID);

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

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

   datetime temp[];

   ArrayResize(temp,10);

   if(!time1) {

      CopyTime(Symbol(),Period(),time3,10,temp);

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

      time1=temp[0];

   }

//--- if the first point's price is not set, it is equal to the third point's one

   if(!price1)

      price1=price3;

//--- if the second point's time is not set, it is located 7 bars left from the third one

   if(!time2)

      time2=temp[2];

//--- if the second point's price is not set, move it 250 points lower than the first one

   if(!price2)

      price2=price1-250*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 ||

         InpDate3<0 || InpDate3>100 || InpPrice3<0 || InpPrice3>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 object anchor points' coordinates

   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 Expansion

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

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

   int d3=InpDate3*(bars-1)/100;

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

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

   int p3=InpPrice3*(accuracy-1)/100;

//--- create Fibonacci Expansion

   if(!FiboExpansionCreate(0,InpName,0,date[d1],price[p1],date[d2],price[p2],date[d3],price[p3],

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

      return;

   }

   SetFiboLevels(InpName,levels_values);

   SetFiboDescriptions(InpName, levels_descriptions);

}

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

//|                                                                  |

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

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);

}

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