//+------------------------------------------------------------------+
//|                                                      b-clock.mq5 |
//|                                     Core time code by Nick Bilak |
//|                                     Modified for MT5 positioning |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, Nick Bilak"
#property link      "http://metatrader.50webs.com/"
#property version   "1.20"
#property indicator_chart_window

//--- Input parameters
input color  InpColor = clrWhite;      // Clock Color
input int    InpFontSize = 10;       // Font Size
input string InpFontName = "Arial";  // Font Name

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
{
    return(INIT_SUCCEEDED);
}

//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
    ObjectDelete(0, "time_clock");
    Comment(""); // Clear any old comments
}

//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
{
    if(rates_total < 1) return(0);

    // Set arrays to Series (index 0 is current bar)
    ArraySetAsSeries(time, true);
    ArraySetAsSeries(close, true);

    // Calculate time remaining [cite: 7]
    datetime currentBarTime = time[0];
    long secondsLeft = (long)currentBarTime + PeriodSeconds() - (long)TimeCurrent();
    
    if(secondsLeft < 0) secondsLeft = 0;

    int m = (int)(secondsLeft / 60);
    int s = (int)(secondsLeft % 60);

    // Format string: "m:ss" 
    string timeText = IntegerToString(m) + ":" + (s < 10 ? "0" : "") + IntegerToString(s);

    // Create or Update the Text Object
    string objName = "time_clock";
    
    // Position: Current Price (close[0]) 
    // Time: We add PeriodSeconds() to move it to the right of the current candle
    datetime positionTime = currentBarTime + (PeriodSeconds() / 2); 
    double positionPrice = close[0];

    if(ObjectFind(0, objName) < 0)
    {
        ObjectCreate(0, objName, OBJ_TEXT, 0, positionTime, positionPrice);
        ObjectSetInteger(0, objName, OBJPROP_COLOR, InpColor);
        ObjectSetInteger(0, objName, OBJPROP_FONTSIZE, InpFontSize);
        ObjectSetString(0, objName, OBJPROP_FONT, InpFontName);
        ObjectSetInteger(0, objName, OBJPROP_ANCHOR, ANCHOR_LEFT); // Align left to stay right of candle
        ObjectSetInteger(0, objName, OBJPROP_BACK, false);
        ObjectSetInteger(0, objName, OBJPROP_SELECTABLE, false);
        ObjectSetInteger(0, objName, OBJPROP_HIDDEN, true);
    }
    
    // Update position and text on every tick
    ObjectMove(0, objName, 0, positionTime, positionPrice);
    ObjectSetString(0, objName, OBJPROP_TEXT, "  " + timeText); // Added two spaces for padding

    return(rates_total);
}