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