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Toh4iem9
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//+------------------------------------------------------------------+
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//| CHO_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 "1.01" // Added selectable MA Method
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#property description "Chaikin Oscillator on Heikin Ashi data with selectable MA type"
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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 4 // CHO, ADL, FastMA, SlowMA
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#property indicator_plots 1
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#property indicator_type1 DRAW_LINE
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#property indicator_color1 clrLightSeaGreen
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#property indicator_label1 "HA_CHO"
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#property indicator_level1 0.0
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#property indicator_levelstyle STYLE_DOT
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//--- Input Parameters ---
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input int InpFastPeriod = 3;
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input int InpSlowPeriod = 10;
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input ENUM_MA_METHOD InpMaMethod = MODE_EMA;
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input ENUM_APPLIED_VOLUME InpVolumeType = VOLUME_TICK;
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//--- Indicator Buffers ---
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double BufferCHO[];
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double BufferADL[];
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double BufferFastMA[];
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double BufferSlowMA[];
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//--- Global Objects and Variables ---
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int g_ExtFastPeriod, g_ExtSlowPeriod;
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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_ExtFastPeriod = (InpFastPeriod < 1) ? 1 : InpFastPeriod;
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g_ExtSlowPeriod = (InpSlowPeriod < 1) ? 1 : InpSlowPeriod;
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if(g_ExtFastPeriod > g_ExtSlowPeriod)
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{
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int temp = g_ExtFastPeriod;
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g_ExtFastPeriod = g_ExtSlowPeriod;
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g_ExtSlowPeriod = temp;
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}
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SetIndexBuffer(0, BufferCHO, INDICATOR_DATA);
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SetIndexBuffer(1, BufferADL, INDICATOR_CALCULATIONS);
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SetIndexBuffer(2, BufferFastMA, INDICATOR_CALCULATIONS);
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SetIndexBuffer(3, BufferSlowMA, INDICATOR_CALCULATIONS);
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ArraySetAsSeries(BufferCHO, false);
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ArraySetAsSeries(BufferADL, false);
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ArraySetAsSeries(BufferFastMA, false);
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ArraySetAsSeries(BufferSlowMA, false);
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PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, g_ExtSlowPeriod - 1);
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IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("HA_CHO(%d,%d)", g_ExtFastPeriod, g_ExtSlowPeriod));
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IndicatorSetInteger(INDICATOR_DIGITS, 0);
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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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//| Chaikin Oscillator 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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if(rates_total < g_ExtSlowPeriod)
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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: Calculate Accumulation/Distribution Line (ADL) on HA data
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for(int i = 0; i < rates_total; i++)
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{
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double mfm = 0;
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double range = ha_high[i] - ha_low[i];
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if(range > 0)
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{
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mfm = ((ha_close[i] - ha_low[i]) - (ha_high[i] - ha_close[i])) / range;
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}
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long current_volume = (InpVolumeType == VOLUME_TICK) ? tick_volume[i] : volume[i];
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double mfv = mfm * current_volume;
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if(i > 0)
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BufferADL[i] = BufferADL[i-1] + mfv;
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else
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BufferADL[i] = mfv;
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}
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//--- STEP 3: Calculate Fast MA on ADL
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for(int i = g_ExtFastPeriod - 1; i < rates_total; i++)
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{
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switch(InpMaMethod)
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{
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case MODE_EMA:
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case MODE_SMMA:
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if(i == g_ExtFastPeriod - 1)
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{
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double sum=0;
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for(int j=0; j<g_ExtFastPeriod; j++)
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sum+=BufferADL[i-j];
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BufferFastMA[i] = sum/g_ExtFastPeriod;
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}
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else
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{
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if(InpMaMethod == MODE_EMA)
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{
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double pr=2.0/(g_ExtFastPeriod+1.0);
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BufferFastMA[i] = BufferADL[i]*pr + BufferFastMA[i-1]*(1.0-pr);
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}
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else
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BufferFastMA[i] = (BufferFastMA[i-1]*(g_ExtFastPeriod-1)+BufferADL[i])/g_ExtFastPeriod;
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}
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break;
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case MODE_LWMA:
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{
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double lwma_sum=0, weight_sum=0;
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for(int j=0; j<g_ExtFastPeriod; j++)
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{
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int weight=g_ExtFastPeriod-j;
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lwma_sum+=BufferADL[i-j]*weight;
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weight_sum+=weight;
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}
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if(weight_sum>0)
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BufferFastMA[i]=lwma_sum/weight_sum;
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}
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break;
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default: // MODE_SMA
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{
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double sum=0;
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for(int j=0; j<g_ExtFastPeriod; j++)
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sum+=BufferADL[i-j];
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BufferFastMA[i] = sum/g_ExtFastPeriod;
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}
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break;
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}
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}
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//--- STEP 4: Calculate Slow MA on ADL
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for(int i = g_ExtSlowPeriod - 1; i < rates_total; i++)
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{
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switch(InpMaMethod)
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{
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case MODE_EMA:
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case MODE_SMMA:
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if(i == g_ExtSlowPeriod - 1)
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{
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double sum=0;
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for(int j=0; j<g_ExtSlowPeriod; j++)
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sum+=BufferADL[i-j];
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BufferSlowMA[i] = sum/g_ExtSlowPeriod;
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}
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else
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{
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if(InpMaMethod == MODE_EMA)
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{
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double pr=2.0/(g_ExtSlowPeriod+1.0);
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BufferSlowMA[i] = BufferADL[i]*pr + BufferSlowMA[i-1]*(1.0-pr);
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}
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else
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BufferSlowMA[i] = (BufferSlowMA[i-1]*(g_ExtSlowPeriod-1)+BufferADL[i])/g_ExtSlowPeriod;
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}
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break;
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case MODE_LWMA:
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{
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double lwma_sum=0, weight_sum=0;
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for(int j=0; j<g_ExtSlowPeriod; j++)
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{
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int weight=g_ExtSlowPeriod-j;
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lwma_sum+=BufferADL[i-j]*weight;
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weight_sum+=weight;
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}
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if(weight_sum>0)
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BufferSlowMA[i]=lwma_sum/weight_sum;
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}
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break;
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default: // MODE_SMA
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{
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double sum=0;
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for(int j=0; j<g_ExtSlowPeriod; j++)
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sum+=BufferADL[i-j];
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BufferSlowMA[i] = sum/g_ExtSlowPeriod;
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}
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break;
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}
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}
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//--- STEP 5: Calculate final Chaikin Oscillator value
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for(int i = g_ExtSlowPeriod - 1; i < rates_total; i++)
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{
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BufferCHO[i] = BufferFastMA[i] - BufferSlowMA[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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