refactor:

Indicators/MyIndicators/Chart_HeikinAshi.mq5

@@ -1,59 +1,81 @@
 //+------------------------------------------------------------------+
 //|                                           Chart_HeikinAshi.mq5   |
 //|                      Copyright 2025, xxxxxxxx                    |
-//|                                                                  |
 //+------------------------------------------------------------------+
 #property copyright "Copyright 2025, xxxxxxxx"
 #property link      ""
-#property version   "3.00" // Refactored for stability and new calculator
+#property version   "3.01" // Added DRAW_NONE plot to hide main series and prevent flickering
 #property description "Draws Heikin Ashi candles on the main chart."
 
 //--- Custom Toolkit Include ---
 #include <MyIncludes\HeikinAshi_Tools.mqh>
 
 //--- Indicator Window and Plot Properties ---
-#property indicator_chart_window  // Draw on the main chart window
+#property indicator_chart_window
-#property indicator_buffers 5       // 4 for OHLC, 1 for color
+#property indicator_buffers 8       // 4 for HA candles, 4 for the hidden main series
-#property indicator_plots   1
+#property indicator_plots   2       // 1 for HA candles, 1 hidden plot
 
-//--- Plot 1: Heikin Ashi Candles
+//--- Plot 1: Heikin Ashi Candles (Visible)
 #property indicator_type1   DRAW_COLOR_CANDLES
 #property indicator_color1  clrCornflowerBlue, clrChocolate // Up and Down colors
-#property indicator_label1  "HA Open;HA High;HA Low;HA Close" // Labels for Data Window
+#property indicator_label1  "HA Open;HA High;HA Low;HA Close"
+
+//--- Plot 2: Main Price Series (Hidden)
+#property indicator_type2   DRAW_NONE
+#property indicator_label2  "OHLC" // Label for Data Window
 
 //--- Indicator Buffers ---
+// Buffers for Heikin Ashi
 double    BufferHA_Open[];
 double    BufferHA_High[];
 double    BufferHA_Low[];
 double    BufferHA_Close[];
-double    BufferColor[];    // Buffer for candle colors
+double    BufferColor[];
+
+// Buffers for the hidden main series plot
+double    BufferMain_Open[];
+double    BufferMain_High[];
+double    BufferMain_Low[];
+double    BufferMain_Close[];
+
 
 //--- Global Objects ---
-CHeikinAshi_Calculator *g_ha_calculator; // Pointer to our Heikin Ashi calculator
+CHeikinAshi_Calculator *g_ha_calculator;
 
 //+------------------------------------------------------------------+
 //| Custom indicator initialization function.                        |
 //+------------------------------------------------------------------+
 int OnInit()
   {
-//--- Map the buffers to the indicator's internal memory
+//--- Map the Heikin Ashi buffers
    SetIndexBuffer(0, BufferHA_Open,  INDICATOR_DATA);
    SetIndexBuffer(1, BufferHA_High,  INDICATOR_DATA);
    SetIndexBuffer(2, BufferHA_Low,   INDICATOR_DATA);
    SetIndexBuffer(3, BufferHA_Close, INDICATOR_DATA);
    SetIndexBuffer(4, BufferColor,    INDICATOR_COLOR_INDEX);
+   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, 1); // Start drawing HA from the second bar
 
-//--- Set buffers to non-timeseries for stable calculation
+//--- Map the hidden main series buffers
+   SetIndexBuffer(5, BufferMain_Open,  INDICATOR_DATA);
+   SetIndexBuffer(6, BufferMain_High,  INDICATOR_DATA);
+   SetIndexBuffer(7, BufferMain_Low,   INDICATOR_DATA);
+   SetIndexBuffer(8, BufferMain_Close, INDICATOR_DATA);
+// No PLOT_DRAW_BEGIN needed for DRAW_NONE
+
+//--- Set all buffers to non-timeseries for stable calculation
    ArraySetAsSeries(BufferHA_Open,  false);
    ArraySetAsSeries(BufferHA_High,  false);
    ArraySetAsSeries(BufferHA_Low,   false);
    ArraySetAsSeries(BufferHA_Close, false);
    ArraySetAsSeries(BufferColor,    false);
+   ArraySetAsSeries(BufferMain_Open,  false);
+   ArraySetAsSeries(BufferMain_High,  false);
+   ArraySetAsSeries(BufferMain_Low,   false);
+   ArraySetAsSeries(BufferMain_Close, false);
 
 //--- Set indicator properties
-   IndicatorSetInteger(INDICATOR_DIGITS, _Digits); // Use the same precision as the symbol
+   IndicatorSetInteger(INDICATOR_DIGITS, _Digits);
    IndicatorSetString(INDICATOR_SHORTNAME, "Heikin Ashi");
-   PlotIndexSetDouble(0, PLOT_EMPTY_VALUE, 0.0); // Define the empty value for the plot
 
 //--- Create the calculator instance
    g_ha_calculator = new CHeikinAshi_Calculator();
@@ -71,7 +93,6 @@ int OnInit()
 //+------------------------------------------------------------------+
 void OnDeinit(const int reason)
   {
-//--- Free the calculator object to prevent memory leaks
    if(CheckPointer(g_ha_calculator) != POINTER_INVALID)
      {
       delete g_ha_calculator;
@@ -93,27 +114,28 @@ int OnCalculate(const int rates_total,
                 const long &volume[],
                 const int &spread[])
   {
-//--- Check if there is enough historical data
    if(rates_total < 2)
       return(0);
 
-//--- STEP 1: Calculate Heikin Ashi bars directly into the indicator buffers
+//--- STEP 1: Hide the main series by copying data to the DRAW_NONE plot
+   ArrayCopy(BufferMain_Open,  open,  0, 0, rates_total);
+   ArrayCopy(BufferMain_High,  high,  0, 0, rates_total);
+   ArrayCopy(BufferMain_Low,   low,   0, 0, rates_total);
+   ArrayCopy(BufferMain_Close, close, 0, 0, rates_total);
+
+//--- STEP 2: Calculate Heikin Ashi bars
    g_ha_calculator.Calculate(rates_total, open, high, low, close,
                              BufferHA_Open, BufferHA_High, BufferHA_Low, BufferHA_Close);
 
-//--- STEP 2: Set the colors for the candles
+//--- STEP 3: Set the colors for the Heikin Ashi candles
    for(int i = 0; i < rates_total; i++)
      {
-      //--- Set the color for the current candle
-      // Color index 0 (clrDodgerBlue) for bullish candles
-      // Color index 1 (clrMaroon) for bearish candles
       if(BufferHA_Open[i] < BufferHA_Close[i])
-         BufferColor[i] = 0.0; // Bullish
+         BufferColor[i] = 0; // Index for the first color (clrCornflowerBlue)
       else
-         BufferColor[i] = 1.0; // Bearish
+         BufferColor[i] = 1; // Index for the second color (clrChocolate)
      }
 
-//--- Return value of rates_total to signal a full recalculation
    return(rates_total);
   }
 //+------------------------------------------------------------------+