/////////////////////////////////////////////////////// // // SaherElm IT Center MQL5 Indicator // ------------------------------------------------- // Name: X121 XSWLH // Description: XSWLH ... // // // Maintainer: // ------------ // Hadi Khazaee Asl (hadi_khazaee_asl@yahoo.com) // ////////////////////////////////////////////////////// // // Global Properties ... #property copyright "Copyright 2023, SaherElm IT Center" #property link "https://saherelm.ir" #property version "1.00" #property description "SaherElm X121 XSWLH Indicator" #property strict // // Definitions ... // #define ShortName "X121 XSWLH" // // Includes Common Library ... #include "../Libraries/x-saherelm.common.lib.mq5" // // Inputs ... // input int swingLength; // Swing Length // input int startCalculationForLastBars = 1000; // Calculate Last n Bars // input bool showSwingLow; // Show Swing Low input bool showSwingHigh; // Show Swing High // input int swingLowArrowCode = 225; // Swing Low Arrow Code input int swingHighArrowCode = 226; // Swing High Arrow Code // #define emptyValue 0.0 // // Buffers ... // #property indicator_chart_window // #property indicator_buffers 2 #property indicator_plots 2 // // SWING LOW ... // #define swingLowBufferIndex 0 double swingLowBuffer[]; // #property indicator_label1 "SWL" #property indicator_type1 DRAW_ARROW #property indicator_color1 clrGreen #property indicator_width1 1 // // SWING HIGH ... // #define swingHighBufferIndex 1 double swingHighBuffer[]; // #property indicator_label2 "SWH" #property indicator_type2 DRAW_ARROW #property indicator_color2 clrRed #property indicator_width2 1 // // Data Buffers ... // #define lastBufferIndex 1 // // Variables, Properties and etc ... // // this counts Available Bars ... int limit; // int firstBarIndex; // int maxLength; // // Event Handlers ... /** * Initialize Indicator ... * * @return ( int ) */ int OnInit() { // // Validate Inputs ... if (!ValidateInputs()) { return INIT_PARAMETERS_INCORRECT; } // // Initialize Indicator Handlers ... // // because in some cases we may have more than one input for // calculation and we must prevent any calculation // untill we pass the biggest input length, here we get max Input length // and then wait until pass it ... maxLength = ExtractMaxLengthOfInputs(); // // Define Index Buffers ... DefineBuffers(); // // Set Indicator ShortName ... SetIndicatorName(); // // Init Succeed ... return INIT_SUCCEEDED; } /** * De Initialize Indicator ... * * @param reason: Integer, De Initialization Reason ... */ void OnDeinit(const int reason) { // // REASON_PROGRAM 0 The EA has stopped working calling the ExpertRemove() function // REASON_REMOVE 1 Program removed from a chart // REASON_RECOMPILE 2 Program recompiled // REASON_CHARTCHANGE 3 A symbol or a chart period is changed // REASON_CHARTCLOSE 4 Chart closed // REASON_PARAMETERS 5 Inputs changed by a user // REASON_ACCOUNT 6 Another account has been activated or reconnection to the trade server has occurred due to changes in the account settings // REASON_TEMPLATE 7 Another chart template applied // REASON_INITFAILED 8 The OnInit() handler returned a non-zero value // REASON_CLOSE 9 Terminal closed } /** * Calculate Bars ... * * @param rates_total: Integer, Total Bars on Chart ... * @param prev_calculated: Integer, Total Calculated Bars on Charts ... * @param time: DateTime Array, History of Open Time ... * @param open: Double Array, History of Open Prices ... * @param high: Double Array, History of High Prices ... * @param low: Double Array, History of Low Prices ... * @param close: Double Array, History of Close Prices ... * @param tick_volume: Long, History of Tick Volumes on Bar ... * @param volume: Long, History of Trade Volumes ... * @param spread: Double, History of Spread Price ... * * @return ( int ) */ int OnCalculate( const int rates_total, const int prev_calculated, 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[] // ) { // // Prepare Buffers ... ArraySetAsSeries(time, true); ArraySetAsSeries(open, true); ArraySetAsSeries(high, true); ArraySetAsSeries(low, true); ArraySetAsSeries(close, true); ArraySetAsSeries(tick_volume, true); ArraySetAsSeries(volume, true); ArraySetAsSeries(spread, true); // limit = (prev_calculated > rates_total || prev_calculated <= 0) ? rates_total : (rates_total - prev_calculated) + 1; // // Main Loop ... for (int i = limit - 1; i >= 0 && !IsStopped(); i--) { // CalculateBuffers( i, prev_calculated, rates_total, // open, high, close, low, tick_volume // ); } // return rates_total; } // // Functions ... /** * Validate Input Args for Initialization ... * * @return ( bool ) */ bool ValidateInputs() { // bool result = false; // result = // swingLength > 0 // ; // return result; } /** * Extract Max Length of Inputs ... * * @return ( int ) */ int ExtractMaxLengthOfInputs() { // int result = 0; // result = MathMax(result, swingLength); // return result; } /** * Define Required Buffers ... */ void DefineBuffers() { // // Plot Buffers ... // // SWING Low ... // ENUM_DRAW_TYPE swingLowDrawType = showSwingLow ? DRAW_ARROW : DRAW_NONE; // ArraySetAsSeries(swingLowBuffer, true); SetIndexBuffer(swingLowBufferIndex, swingLowBuffer, INDICATOR_DATA); // PlotIndexSetInteger(swingLowBufferIndex, PLOT_SHOW_DATA, showSwingLow); PlotIndexSetInteger(swingLowBufferIndex, PLOT_DRAW_TYPE, swingLowDrawType); // PlotIndexSetDouble(swingLowBufferIndex, PLOT_EMPTY_VALUE, emptyValue); PlotIndexSetInteger(swingLowBufferIndex, PLOT_ARROW, swingLowArrowCode); // // SWING High ... // ENUM_DRAW_TYPE swingHighDrawType = showSwingHigh ? DRAW_ARROW : DRAW_NONE; // ArraySetAsSeries(swingHighBuffer, true); SetIndexBuffer(swingHighBufferIndex, swingHighBuffer, INDICATOR_DATA); // PlotIndexSetInteger(swingHighBufferIndex, PLOT_SHOW_DATA, showSwingHigh); PlotIndexSetInteger(swingHighBufferIndex, PLOT_DRAW_TYPE, swingHighDrawType); // PlotIndexSetDouble(swingHighBufferIndex, PLOT_EMPTY_VALUE, emptyValue); PlotIndexSetInteger(swingHighBufferIndex, PLOT_ARROW, swingHighArrowCode); } /** * Set Indicator Short Name and also we can define Buffers Labels ... */ void SetIndicatorName() { // IndicatorSetInteger(INDICATOR_DIGITS, _Digits); IndicatorSetString(INDICATOR_SHORTNAME, ShortName); } /** * Fill All Bufers to Zero Vlue for Specified Bar Index ... * * @param barIndex: Integer ... */ void FillBuffersZero(int barIndex) { // swingLowBuffer[barIndex] = emptyValue; swingHighBuffer[barIndex] = emptyValue; } /** * Calculate Custom Buffers ... * * @param bar_index: Integer, Represent Current Bar ... * @param prevCalculated: Integer, Represent Previous Calculated Bars ... * @param ratesTotal: Integer, Represents All Available Bars ... * @param open: Double Array, History of Open Prices ... * @param high: Double Array, History of High Prices ... * @param close: Double Array, History of Close Prices ... * @param low: Double Array, History of Low Prices ... * @param tickVolume: Long, History of Tick Volumes on Bar ... */ void CalculateBuffers( int bar_index, // Selected Bar Index const int prevCalculated, const int ratesTotal, const double &open[], const double &high[], const double &close[], const double &low[], const long &tickVolume[] // ) { // int barsLimit = startCalculationForLastBars > 0 ? startCalculationForLastBars : 0; if (barsLimit == 0) { // barsLimit = ratesTotal; firstBarIndex = barsLimit - 1; } else { // firstBarIndex = startCalculationForLastBars; } // // bool canCalculate = true; bool canCalculate = bar_index <= barsLimit; if (canCalculate) { // // Calculate Support nad Resistance ... CalculateValues( bar_index, prevCalculated, ratesTotal, open, high, close, low, tickVolume // ); } else { FillBuffersZero(bar_index); } } /** * Calculate Values ... * * @param bar_index: int, Specified Bar Index ... * @param prevCalculated: int, Provides Previous Calculated Bars ... * @param ratesTotal: int, Provides All Availabled Bars ... * @param open: double Collection, Provides Open Prices Time Series ... * @param high: double Collection, Provides High Prices Time Series ... * @param close: double Collection, Provides Close Prices Time Series ... * @param low: double Collection, Provides Low Prices Time Series ... * @param tickVolume: long Collection, Provides Ticks Volume Prices Time Series ... */ void CalculateValues( int bar_index, // Selected Bar Index const int prevCalculated, const int ratesTotal, const double &open[], const double &high[], const double &close[], const double &low[], const long &tickVolume[] // ) { // // Check Prev Bar ... // int lastBarIndex = bar_index + 1; bool isFirstBar = startCalculationForLastBars > 0 ? bar_index == startCalculationForLastBars : bar_index == firstBarIndex; // // Reading Last Values ... // double iSWLPrev = isFirstBar ? emptyValue : swingLowBuffer[lastBarIndex]; // double iSWHPrev = isFirstBar ? emptyValue : swingHighBuffer[lastBarIndex]; // // Checking Swings ... bool isSwingLow = IsSwingLow(high, low, bar_index, swingLength); bool isSwingHigh = IsSwingHigh(high, low, bar_index, swingLength); bool hasSwing = isSwingLow || isSwingHigh; if (!hasSwing) { // // FillBuffersZero(bar_index); // swingLowBuffer[bar_index] = iSWLPrev; swingHighBuffer[bar_index] = iSWHPrev; return; } // double iSWL = low[bar_index]; double iSWH = high[bar_index]; // // Act Based on Swing High or Swing Low Detection ... if (isSwingLow && !isSwingHigh) { // // Detect Swing High based On swing Low ... iSWH = iSWHPrev; } else if (isSwingHigh && !isSwingLow) { // // Detect Swing Low Based On Swing High ... iSWL = iSWLPrev; } // if (iSWL > iSWLPrev && iSWH == iSWHPrev) { iSWL = iSWLPrev; } // if (iSWH < iSWHPrev && iSWL == iSWLPrev) { iSWH = iSWHPrev; } // swingLowBuffer[bar_index] = iSWL; swingHighBuffer[bar_index] = iSWH; } // // Helpers ... // bool IsSwingLow( const double &high[], const double &low[], int index, int length // ) { // bool result = false; // result = index + 1 + length <= firstBarIndex; if (!result) { return result; } // for (int i = index + 1; i <= index + length; i++) { // result = low[index] < low[i]; if (!result) { break; } } // return result; } // bool IsSwingHigh( const double &high[], const double &low[], int index, int length // ) { // bool result = false; // result = index + 1 + length <= firstBarIndex; if (!result) { return result; } // for (int i = index + 1; i <= index + length; i++) { // result = high[index] > high[i]; if (!result) { break; } } // return result; }