//+------------------------------------------------------------------+
//| macdbs.mq4 |
//| Copyright 2021, MetaQuotes Software Corp. |
//| https://www.mql5.com |
//+------------------------------------------------------------------+
#property indicator_separate_window
#property indicator_buffers 3
#property indicator_color1 Black
#property indicator_color2 Green
#property indicator_color3 Red
//--- buffers
double ExtMacdBuffer[];
double ExtUpBuffer[];
double ExtDnBuffer[];
//---
#define PERIOD_FAST 12
#define PERIOD_SLOW 26
//--- bars minimum for calculation
#define DATA_LIMIT 34
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
void OnInit(void)
{
//--- drawing settings
SetIndexStyle(0,DRAW_NONE);
SetIndexStyle(1,DRAW_HISTOGRAM);
SetIndexStyle(2,DRAW_HISTOGRAM);
IndicatorDigits(Digits+1);
SetIndexDrawBegin(0,DATA_LIMIT);
SetIndexDrawBegin(1,DATA_LIMIT);
SetIndexDrawBegin(2,DATA_LIMIT);
//--- 3 indicator buffers mapping
SetIndexBuffer(0,ExtMacdBuffer);
SetIndexBuffer(1,ExtUpBuffer);
SetIndexBuffer(2,ExtDnBuffer);
//--- name for DataWindow and indicator subwindow label
IndicatorShortName("MACD");
IndicatorShortName("MACD("+IntegerToString(PERIOD_FAST)+","+IntegerToString(PERIOD_SLOW)+")");
SetIndexLabel(1,NULL);
SetIndexLabel(2,NULL);
}
//+------------------------------------------------------------------+
//| Awesome Oscillator |
//+------------------------------------------------------------------+
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[])
{
int i,limit=rates_total-prev_calculated;
double prev=0.0,current;
//--- check for rates total
if(rates_total<=DATA_LIMIT)
return(0);
//--- last counted bar will be recounted
if(prev_calculated>0)
{
limit++;
prev=ExtMacdBuffer[limit];
}
//--- macd
for(i=0; i<limit; i++)
ExtMacdBuffer[i]=iMA(NULL,0,PERIOD_FAST,0,MODE_EMA,PRICE_CLOSE,i)-
iMA(NULL,0,PERIOD_SLOW,0,MODE_EMA,PRICE_CLOSE,i);
//--- dispatch values between 2 buffers
bool up=true;
for(i=limit-1; i>=0; i--)
{
current=ExtMacdBuffer[i];
if(current>prev)
up=true;
if(current<prev)
up=false;
if(!up)
{
ExtDnBuffer[i]=current;
ExtUpBuffer[i]=0.0;
}
else
{
ExtUpBuffer[i]=current;
ExtDnBuffer[i]=0.0;
}
prev=current;
}
//--- done
return(rates_total);
}
//+------------------------------------------------------------------+
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