refactor: Upgraded with dynamic high-performance Standard/MTF support

Indicators/MyIndicators/StochasticSlow_Pro.mq5

@@ -1,9 +1,9 @@
 //+------------------------------------------------------------------+
 //|                                           StochasticSlow_Pro.mq5 |
-//|                                          Copyright 2025, xxxxxxxx|
+//|                                          Copyright 2026, xxxxxxxx|
 //+------------------------------------------------------------------+
-#property copyright "Copyright 2025, xxxxxxxx"
+#property copyright "Copyright 2026, xxxxxxxx"
-#property version   "3.00" // Refactored to use MovingAverage_Engine
+#property version   "3.10" // Upgraded with dynamic high-performance Standard/MTF support
 #property description "Professional Slow Stochastic with selectable MA types and"
 #property description "candle source (Standard or Heikin Ashi)."
 
@@ -35,6 +35,7 @@
 
 //--- Include the calculator engine ---
 #include <MyIncludes\StochasticSlow_Calculator.mqh>
+#include <MyIncludes\DataSync_Tools.mqh> // Centralized MTF synchronization daemon
 
 //--- Enum for selecting the candle source for calculation ---
 enum ENUM_CANDLE_SOURCE
@@ -44,12 +45,14 @@ enum ENUM_CANDLE_SOURCE
   };
 
 //--- Input Parameters ---
+input group "--- Timeframe Settings ---"
+input ENUM_TIMEFRAMES     InpTimeframe      = PERIOD_CURRENT;       // Target Higher Timeframe
+
+input group "--- Stochastic Settings ---"
 input int                InpKPeriod       = 5;
 input int                InpSlowingPeriod = 3;
-// UPDATED: Use ENUM_MA_TYPE
 input ENUM_MA_TYPE       InpSlowingMAType = SMA;
 input int                InpDPeriod       = 3;
-// UPDATED: Use ENUM_MA_TYPE
 input ENUM_MA_TYPE       InpDMAType       = SMA;
 input ENUM_CANDLE_SOURCE InpCandleSource  = CANDLE_STANDARD;
 
@@ -57,40 +60,90 @@ input ENUM_CANDLE_SOURCE InpCandleSource  = CANDLE_STANDARD;
 double    BufferK[];
 double    BufferD[];
 
-//--- Global calculator object ---
+//--- Internal HTF Data Caches
+double    h_open[], h_high[], h_low[], h_close[];
+double    h_res_k[], h_res_d[];
+datetime  h_time[];
+
+//--- Global Objects & Synchronizer State
 CStochasticSlowCalculator *g_calculator;
 
+bool            g_is_mtf_mode         = false;
+ENUM_TIMEFRAMES g_calc_timeframe;
+bool            g_data_ready          = false;
+bool            g_data_synced         = false;
+int             g_htf_count           = 0;
+datetime        g_last_htf_time       = 0;
+
 //+------------------------------------------------------------------+
 //| Custom indicator initialization function.                        |
 //+------------------------------------------------------------------+
 int OnInit()
   {
+   g_data_ready    = false;
+   g_data_synced   = false;
+   g_htf_count     = 0;
+   g_last_htf_time = 0;
+
+//--- 1. Resolve Timeframe and validate direction
+   g_calc_timeframe = InpTimeframe;
+   if(g_calc_timeframe == PERIOD_CURRENT)
+      g_calc_timeframe = (ENUM_TIMEFRAMES)Period();
+
+   if(g_calc_timeframe < Period())
+     {
+      PrintFormat("Critical Error: Target timeframe (%s) must be >= current timeframe (%s).",
+                  EnumToString(g_calc_timeframe), EnumToString(Period()));
+      return(INIT_FAILED);
+     }
+   g_is_mtf_mode = (g_calc_timeframe > Period());
+
+//--- 2. Bind buffers to index mapping
    SetIndexBuffer(0, BufferK, INDICATOR_DATA);
    SetIndexBuffer(1, BufferD, INDICATOR_DATA);
+
+//--- Force strict chronological alignment (false = old to new)
    ArraySetAsSeries(BufferK, false);
    ArraySetAsSeries(BufferD, false);
 
+//--- 3. Factory Logic for Heikin Ashi price routing
    switch(InpCandleSource)
      {
       case CANDLE_HEIKIN_ASHI:
          g_calculator = new CStochasticSlowCalculator_HA();
-         IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("SlowStoch HA(%d,%d,%d)", InpKPeriod, InpSlowingPeriod, InpDPeriod));
          break;
       default:
          g_calculator = new CStochasticSlowCalculator();
-         IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("SlowStoch(%d,%d,%d)", InpKPeriod, InpSlowingPeriod, InpDPeriod));
          break;
      }
 
    if(CheckPointer(g_calculator) == POINTER_INVALID || !g_calculator.Init(InpKPeriod, InpSlowingPeriod, InpSlowingMAType, InpDPeriod, InpDMAType))
      {
-      Print("Failed to create or initialize Slow Stochastic Calculator object.");
+      Print("Critical Error: Failed to create or initialize Slow Stochastic Calculator object.");
       return(INIT_FAILED);
      }
 
+//--- 4. Dynamic Setup of Indicator Shortname and Plots
+   string type = (InpCandleSource == CANDLE_HEIKIN_ASHI) ? " HA" : "";
+   string tf_str = g_is_mtf_mode ? (" " + EnumToString(g_calc_timeframe)) : "";
+   IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("SlowStoch%s%s(%d,%d,%d)", type, tf_str, InpKPeriod, InpSlowingPeriod, InpDPeriod));
+
+//--- Drawing offset configuration
+   int draw_begin_k = InpKPeriod + InpSlowingPeriod - 2;
+   int draw_begin_d = InpKPeriod + InpSlowingPeriod + InpDPeriod - 3;
+   if(g_is_mtf_mode)
+     {
+      draw_begin_k = 0;
+      draw_begin_d = 0;
+     }
+
+   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, draw_begin_k);
+   PlotIndexSetInteger(1, PLOT_DRAW_BEGIN, draw_begin_d);
    IndicatorSetInteger(INDICATOR_DIGITS, 2);
-   PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, InpKPeriod + InpSlowingPeriod - 2);
+
-   PlotIndexSetInteger(1, PLOT_DRAW_BEGIN, InpKPeriod + InpSlowingPeriod + InpDPeriod - 3);
+//--- 5. Initialize Background Synchronization Timer Daemon (Only if MTF is active)
+   if(g_is_mtf_mode)
+      EventSetTimer(1);
 
    return(INIT_SUCCEEDED);
   }
@@ -100,6 +153,7 @@ int OnInit()
 //+------------------------------------------------------------------+
 void OnDeinit(const int reason)
   {
+   EventKillTimer();
    if(CheckPointer(g_calculator) != POINTER_INVALID)
       delete g_calculator;
   }
@@ -118,12 +172,169 @@ int OnCalculate(const int rates_total,
                 const long &volume[],
                 const int &spread[])
   {
+   int required_bars = InpKPeriod + InpSlowingPeriod + InpDPeriod + 5;
+   if(rates_total < required_bars)
+      return 0;
+
    if(CheckPointer(g_calculator) == POINTER_INVALID)
       return 0;
 
-   g_calculator.Calculate(rates_total, prev_calculated, open, high, low, close, BufferK, BufferD);
+//--- Force chronological indexing on current timeframe arrays
+   ArraySetAsSeries(time,  false);
+   ArraySetAsSeries(open,  false);
+   ArraySetAsSeries(high,  false);
+   ArraySetAsSeries(low,   false);
+   ArraySetAsSeries(close, false);
+
+//===================================================================
+// MODE 1: Current Timeframe calculation (Standard ultra-high speed)
+//===================================================================
+   if(!g_is_mtf_mode)
+     {
+      g_calculator.Calculate(rates_total, prev_calculated, open, high, low, close, BufferK, BufferD);
+      return(rates_total);
+     }
+
+//===================================================================
+// MODE 2: Multi-Timeframe Engine (Warp-free step synchronization)
+//===================================================================
+   if(!CDataSync::EnsureHTFDataReady(_Symbol, g_calc_timeframe, required_bars))
+     {
+      g_data_synced = false;
+      return 0; // Wait for next tick to let history synchronize
+     }
+
+   g_data_synced = true;
+
+//--- Check if a new HTF candle has opened
+   datetime htf_time_current = iTime(_Symbol, g_calc_timeframe, 0);
+   bool htf_updated = (htf_time_current != g_last_htf_time);
+
+   if(htf_updated || prev_calculated == 0)
+     {
+      g_last_htf_time = htf_time_current;
+
+      int htf_bars = iBars(_Symbol, g_calc_timeframe);
+      if(htf_bars < required_bars)
+        {
+         g_data_ready = false;
+         return 0;
+        }
+
+      g_htf_count = MathMin(htf_bars, 3000); // Guard rails to prevent memory overload
+
+      // Resize all HTF caching arrays
+      ArrayResize(h_time,    g_htf_count);
+      ArrayResize(h_open,    g_htf_count);
+      ArrayResize(h_high,    g_htf_count);
+      ArrayResize(h_low,     g_htf_count);
+      ArrayResize(h_close,   g_htf_count);
+      ArrayResize(h_res_k,   g_htf_count);
+      ArrayResize(h_res_d,   g_htf_count);
+
+      // Force chronological structure on high-level arrays
+      ArraySetAsSeries(h_time,    false);
+      ArraySetAsSeries(h_open,    false);
+      ArraySetAsSeries(h_high,    false);
+      ArraySetAsSeries(h_low,     false);
+      ArraySetAsSeries(h_close,   false);
+      ArraySetAsSeries(h_res_k,   false);
+      ArraySetAsSeries(h_res_d,   false);
+
+      // Copy basic pricing data
+      if(CopyTime(_Symbol,  g_calc_timeframe, 0, g_htf_count, h_time)  != g_htf_count ||
+         CopyOpen(_Symbol,  g_calc_timeframe, 0, g_htf_count, h_open)  != g_htf_count ||
+         CopyHigh(_Symbol,  g_calc_timeframe, 0, g_htf_count, h_high)  != g_htf_count ||
+         CopyLow(_Symbol,   g_calc_timeframe, 0, g_htf_count, h_low)   != g_htf_count ||
+         CopyClose(_Symbol, g_calc_timeframe, 0, g_htf_count, h_close) != g_htf_count)
+        {
+         g_data_ready = false;
+         return 0;
+        }
+
+      //--- Calculate core indicators directly on high timeframe (Initial setup)
+      g_calculator.Calculate(g_htf_count, 0, h_open, h_high, h_low, h_close, h_res_k, h_res_d);
+
+      g_data_ready = true;
+     }
+
+   if(!g_data_ready)
+      return 0;
+
+//--- 5. Real-Time Update for the active forming HTF candle (Index: g_htf_count - 1) on every tick
+   int live_idx = g_htf_count - 1;
+   if(live_idx >= required_bars)
+     {
+      double o[1], h[1], l[1], c[1];
+      int shift = iBarShift(_Symbol, g_calc_timeframe, htf_time_current, false);
+      if(shift >= 0 &&
+         CopyOpen(_Symbol,  g_calc_timeframe, shift, 1, o) == 1 &&
+         CopyHigh(_Symbol,  g_calc_timeframe, shift, 1, h) == 1 &&
+         CopyLow(_Symbol,   g_calc_timeframe, shift, 1, l) == 1 &&
+         CopyClose(_Symbol, g_calc_timeframe, shift, 1, c) == 1)
+        {
+         h_open[live_idx]  = o[0];
+         h_high[live_idx]  = h[0];
+         h_low[live_idx]   = l[0];
+         h_close[live_idx] = c[0];
+
+         // Stateful, O(1) mock update for the live bar
+         g_calculator.Calculate(g_htf_count, g_htf_count, h_open, h_high, h_low, h_close, h_res_k, h_res_d);
+        }
+     }
+
+//--- 6. Warp-free step force (Staircase Solution anchor determination)
+   int start = (prev_calculated > 0) ? prev_calculated - 1 : 0;
+
+   int first_bar_of_forming_htf = rates_total - 1;
+   while(first_bar_of_forming_htf > 0 &&
+         iBarShift(_Symbol, g_calc_timeframe, time[first_bar_of_forming_htf], false) == 0)
+     {
+      first_bar_of_forming_htf--;
+     }
+   first_bar_of_forming_htf++; // Anchor set to start of current HTF period block
+
+   if(start > first_bar_of_forming_htf)
+      start = first_bar_of_forming_htf;
+
+//--- 7. Map HTF Calculated results cleanly to the lower chart timeframe (O(1) complexity)
+   for(int i = start; i < rates_total; i++)
+     {
+      datetime t = time[i];
+      int shift_htf = iBarShift(_Symbol, g_calc_timeframe, t, false);
+
+      if(shift_htf >= 0)
+        {
+         int idx_htf = g_htf_count - 1 - shift_htf;
+         if(idx_htf >= 0 && idx_htf < g_htf_count)
+           {
+            BufferK[i] = h_res_k[idx_htf];
+            BufferD[i] = h_res_d[idx_htf];
+           }
+         else
+           {
+            BufferK[i] = EMPTY_VALUE;
+            BufferD[i] = EMPTY_VALUE;
+           }
+        }
+      else
+        {
+         BufferK[i] = EMPTY_VALUE;
+         BufferD[i] = EMPTY_VALUE;
+        }
+     }
 
    return(rates_total);
   }
+
+//+------------------------------------------------------------------+
+//| OnTimer Event Handler                                            |
+//+------------------------------------------------------------------+
+void OnTimer()
+  {
+//--- Delegate asynchronous history checking and forced redraws to DataSync daemon using correct lookback period
+   int required_bars = InpKPeriod + InpSlowingPeriod + InpDPeriod + 10;
+   CDataSync::OnTimerUpdate(_Symbol, g_calc_timeframe, required_bars, g_data_synced);
+  }
 //+------------------------------------------------------------------+
 //+------------------------------------------------------------------+