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//+------------------------------------------------------------------+
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//| MACD_HeikinAshi.mq5 |
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//| Copyright 2025, xxxxxxxx |
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//| |
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//+------------------------------------------------------------------+
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#property copyright "Copyright 2025, xxxxxxxx"
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#property link ""
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#property version "1.00" // TradingView style on Heikin Ashi data
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#property description "MACD on Heikin Ashi data (TradingView Style)"
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#include <MyIncludes\HeikinAshi_Tools.mqh>
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//--- Indicator Window and Plot Properties ---
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#property indicator_separate_window
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#property indicator_buffers 5 // Histogram, MACD Line, Signal Line, FastEMA, SlowEMA
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#property indicator_plots 3 // Histogram, MACD Line, Signal Line
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//--- Plot 1: MACD Histogram
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#property indicator_label1 "HA_Hist"
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#property indicator_type1 DRAW_HISTOGRAM
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#property indicator_color1 clrSilver
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#property indicator_width1 1
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//--- Plot 2: MACD Line
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#property indicator_label2 "HA_MACD"
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#property indicator_type2 DRAW_LINE
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#property indicator_color2 clrDodgerBlue
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#property indicator_style2 STYLE_SOLID
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#property indicator_width2 1
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//--- Plot 3: Signal Line
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#property indicator_label3 "HA_Signal"
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#property indicator_type3 DRAW_LINE
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#property indicator_color3 clrOrangeRed
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#property indicator_style3 STYLE_SOLID
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#property indicator_width3 1
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//--- Enum for selecting Heikin Ashi price source ---
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enum ENUM_HA_APPLIED_PRICE
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{
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HA_PRICE_CLOSE, HA_PRICE_OPEN, HA_PRICE_HIGH, HA_PRICE_LOW
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};
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//--- Input Parameters ---
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input int InpFastEMA = 12;
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input int InpSlowEMA = 26;
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input int InpSignalEMA = 9;
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input ENUM_HA_APPLIED_PRICE InpAppliedPrice = HA_PRICE_CLOSE;
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//--- Indicator Buffers ---
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double BufferMACD_Histogram[];
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double BufferMACDLine[];
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double BufferSignalLine[];
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double BufferFastEMA[];
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double BufferSlowEMA[];
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//--- Global Objects and Variables ---
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int g_ExtFastEMA, g_ExtSlowEMA, g_ExtSignalEMA;
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CHeikinAshi_Calculator *g_ha_calculator;
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//+------------------------------------------------------------------+
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//| Custom indicator initialization function. |
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//+------------------------------------------------------------------+
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int OnInit()
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{
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g_ExtFastEMA = (InpFastEMA < 1) ? 1 : InpFastEMA;
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g_ExtSlowEMA = (InpSlowEMA < 1) ? 1 : InpSlowEMA;
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g_ExtSignalEMA = (InpSignalEMA < 1) ? 1 : InpSignalEMA;
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if(g_ExtFastEMA > g_ExtSlowEMA)
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{
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int temp = g_ExtFastEMA;
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g_ExtFastEMA = g_ExtSlowEMA;
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g_ExtSlowEMA = temp;
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}
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SetIndexBuffer(0, BufferMACD_Histogram, INDICATOR_DATA);
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SetIndexBuffer(1, BufferMACDLine, INDICATOR_DATA);
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SetIndexBuffer(2, BufferSignalLine, INDICATOR_DATA);
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SetIndexBuffer(3, BufferFastEMA, INDICATOR_CALCULATIONS);
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SetIndexBuffer(4, BufferSlowEMA, INDICATOR_CALCULATIONS);
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ArraySetAsSeries(BufferMACD_Histogram, false);
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ArraySetAsSeries(BufferMACDLine, false);
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ArraySetAsSeries(BufferSignalLine, false);
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ArraySetAsSeries(BufferFastEMA, false);
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ArraySetAsSeries(BufferSlowEMA, false);
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int macd_line_draw_begin = g_ExtSlowEMA - 1;
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int signal_draw_begin = g_ExtSlowEMA + g_ExtSignalEMA - 2;
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PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, signal_draw_begin);
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PlotIndexSetInteger(1, PLOT_DRAW_BEGIN, macd_line_draw_begin);
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PlotIndexSetInteger(2, PLOT_DRAW_BEGIN, signal_draw_begin);
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IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("HA_MACD(%d,%d,%d)", g_ExtFastEMA, g_ExtSlowEMA, g_ExtSignalEMA));
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IndicatorSetInteger(INDICATOR_DIGITS, _Digits);
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g_ha_calculator = new CHeikinAshi_Calculator();
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if(CheckPointer(g_ha_calculator) == POINTER_INVALID)
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{
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Print("Error creating CHeikinAshi_Calculator object");
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return(INIT_FAILED);
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}
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return(INIT_SUCCEEDED);
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}
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//+------------------------------------------------------------------+
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//| Custom indicator deinitialization function. |
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//+------------------------------------------------------------------+
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void OnDeinit(const int reason)
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{
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if(CheckPointer(g_ha_calculator) != POINTER_INVALID)
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{
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delete g_ha_calculator;
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g_ha_calculator = NULL;
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}
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}
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//+------------------------------------------------------------------+
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//| MACD on Heikin Ashi calculation function. |
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//+------------------------------------------------------------------+
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int OnCalculate(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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int start_pos = g_ExtSlowEMA + g_ExtSignalEMA - 2;
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if(rates_total <= start_pos)
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return(0);
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//--- Intermediate Heikin Ashi Buffers
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double ha_open[], ha_high[], ha_low[], ha_close[];
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ArrayResize(ha_open, rates_total);
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ArrayResize(ha_high, rates_total);
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ArrayResize(ha_low, rates_total);
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ArrayResize(ha_close, rates_total);
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//--- STEP 1: Calculate Heikin Ashi bars
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g_ha_calculator.Calculate(rates_total, open, high, low, close, ha_open, ha_high, ha_low, ha_close);
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//--- STEP 2: Prepare the Heikin Ashi source price array
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double ha_price_source[];
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ArrayResize(ha_price_source, rates_total);
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switch(InpAppliedPrice)
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{
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case HA_PRICE_OPEN:
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ArrayCopy(ha_price_source, ha_open);
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break;
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case HA_PRICE_HIGH:
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ArrayCopy(ha_price_source, ha_high);
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break;
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case HA_PRICE_LOW:
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ArrayCopy(ha_price_source, ha_low);
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break;
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default:
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ArrayCopy(ha_price_source, ha_close);
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break;
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}
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//--- STEP 3: Calculate Fast EMA on HA data
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double pr_fast = 2.0 / (g_ExtFastEMA + 1.0);
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for(int i = g_ExtFastEMA - 1; i < rates_total; i++)
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{
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if(i == g_ExtFastEMA - 1)
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{
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double sum = 0;
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for(int j=0; j<g_ExtFastEMA; j++)
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sum += ha_price_source[i-j];
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BufferFastEMA[i] = sum / g_ExtFastEMA;
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}
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else
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{
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BufferFastEMA[i] = ha_price_source[i] * pr_fast + BufferFastEMA[i-1] * (1.0 - pr_fast);
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}
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}
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//--- STEP 4: Calculate Slow EMA on HA data
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double pr_slow = 2.0 / (g_ExtSlowEMA + 1.0);
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for(int i = g_ExtSlowEMA - 1; i < rates_total; i++)
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{
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if(i == g_ExtSlowEMA - 1)
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{
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double sum = 0;
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for(int j=0; j<g_ExtSlowEMA; j++)
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sum += ha_price_source[i-j];
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BufferSlowEMA[i] = sum / g_ExtSlowEMA;
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}
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else
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{
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BufferSlowEMA[i] = ha_price_source[i] * pr_slow + BufferSlowEMA[i-1] * (1.0 - pr_slow);
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}
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}
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//--- STEP 5: Calculate MACD Line
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for(int i = g_ExtSlowEMA - 1; i < rates_total; i++)
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{
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BufferMACDLine[i] = BufferFastEMA[i] - BufferSlowEMA[i];
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}
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//--- STEP 6: Calculate Signal Line (EMA of MACD Line) and Histogram
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double pr_signal = 2.0 / (g_ExtSignalEMA + 1.0);
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for(int i = start_pos; i < rates_total; i++)
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{
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if(i == start_pos)
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{
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double sum = 0;
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for(int j=0; j<g_ExtSignalEMA; j++)
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sum += BufferMACDLine[i-j];
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BufferSignalLine[i] = sum / g_ExtSignalEMA;
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}
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else
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{
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BufferSignalLine[i] = BufferMACDLine[i] * pr_signal + BufferSignalLine[i-1] * (1.0 - pr_signal);
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}
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BufferMACD_Histogram[i] = BufferMACDLine[i] - BufferSignalLine[i];
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}
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return(rates_total);
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}
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//+------------------------------------------------------------------+
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//+------------------------------------------------------------------+
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