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//+------------------------------------------------------------------+
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//| MACD.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 "6.00" // TradingView style: MACD Line, Signal Line, and Histogram
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#property description "Moving Average Convergence/Divergence (TradingView Style)"
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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, Signal, MACD 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 "Histogram"
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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 "MACD"
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#property indicator_type2 DRAW_LINE
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// --- FIX: Replaced hex code with a standard MQL5 color constant ---
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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 "Signal"
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#property indicator_type3 DRAW_LINE
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// --- FIX: Replaced hex code with a standard MQL5 color constant ---
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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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//--- 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_APPLIED_PRICE InpAppliedPrice = PRICE_CLOSE;
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//--- Indicator Buffers ---
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double BufferMACD_Histogram[]; // Plot 1
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double BufferMACDLine[]; // Plot 2
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double BufferSignalLine[]; // Plot 3
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double BufferFastEMA[]; // Calculation
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double BufferSlowEMA[]; // Calculation
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//--- Global Variables ---
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int g_ExtFastEMA, g_ExtSlowEMA, g_ExtSignalEMA;
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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); // Histogram
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PlotIndexSetInteger(1, PLOT_DRAW_BEGIN, macd_line_draw_begin); // MACD Line
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PlotIndexSetInteger(2, PLOT_DRAW_BEGIN, signal_draw_begin); // Signal Line
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IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("MACD(%d,%d,%d)", g_ExtFastEMA, g_ExtSlowEMA, g_ExtSignalEMA));
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IndicatorSetInteger(INDICATOR_DIGITS, _Digits);
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return(INIT_SUCCEEDED);
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}
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//+------------------------------------------------------------------+
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//| Moving Average Convergence/Divergence 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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//--- STEP 1: Prepare the source price array
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double price_source[];
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ArrayResize(price_source, rates_total);
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for(int i=0; i<rates_total; i++)
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{
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switch(InpAppliedPrice)
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{
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case PRICE_OPEN:
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price_source[i] = open[i];
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break;
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case PRICE_HIGH:
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price_source[i] = high[i];
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break;
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case PRICE_LOW:
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price_source[i] = low[i];
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break;
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default:
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price_source[i] = close[i];
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break;
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}
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}
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//--- STEP 2: Calculate Fast EMA
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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 += 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] = 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 3: Calculate Slow EMA
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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 += 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] = 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 4: 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 5: 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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