89 lines
3.2 KiB
MQL5
89 lines
3.2 KiB
MQL5
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//+------------------------------------------------------------------+
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//| Volumes.mq5 |
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//| Copyright 2000-2025, MetaQuotes Ltd. |
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//| https://www.mql5.com |
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//+------------------------------------------------------------------+
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#property copyright "Copyright 2000-2025, MetaQuotes Ltd."
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#property link "https://www.mql5.com"
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//--- indicator settings
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#property indicator_separate_window
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#property indicator_buffers 2
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#property indicator_plots 1
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#property indicator_type1 DRAW_COLOR_HISTOGRAM
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#property indicator_color1 clrGreen,clrRed
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#property indicator_style1 0
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#property indicator_width1 1
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#property indicator_minimum 0.0
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//--- input data
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input ENUM_APPLIED_VOLUME InpVolumeType=VOLUME_TICK; // Volumes
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//--- indicator buffers
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double ExtVolumesBuffer[];
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double ExtColorsBuffer[];
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//+------------------------------------------------------------------+
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//| Custom indicator initialization function |
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//+------------------------------------------------------------------+
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void OnInit()
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{
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//--- buffers
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SetIndexBuffer(0,ExtVolumesBuffer,INDICATOR_DATA);
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SetIndexBuffer(1,ExtColorsBuffer,INDICATOR_COLOR_INDEX);
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//--- name for DataWindow and indicator subwindow label
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IndicatorSetString(INDICATOR_SHORTNAME,"Volumes");
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//--- indicator digits
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IndicatorSetInteger(INDICATOR_DIGITS,0);
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}
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//+------------------------------------------------------------------+
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//| Volumes |
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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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if(rates_total<2)
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return(0);
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//--- starting work
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int pos=prev_calculated-1;
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//--- correct position
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if(pos<1)
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{
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ExtVolumesBuffer[0]=0;
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pos=1;
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}
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//--- main cycle
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if(InpVolumeType==VOLUME_TICK)
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CalculateVolume(pos,rates_total,tick_volume);
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else
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CalculateVolume(pos,rates_total,volume);
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//--- OnCalculate done. Return new prev_calculated.
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return(rates_total);
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}
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//+------------------------------------------------------------------+
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//| |
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//+------------------------------------------------------------------+
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void CalculateVolume(const int pos,const int rates_total,const long& volume[])
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{
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ExtVolumesBuffer[0]=(double)volume[0];
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ExtColorsBuffer[0]=0.0;
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//---
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for(int i=pos; i<rates_total && !IsStopped(); i++)
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{
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double curr_volume=(double)volume[i];
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double prev_volume=(double)volume[i-1];
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//--- calculate indicator
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ExtVolumesBuffer[i]=curr_volume;
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if(curr_volume>prev_volume)
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ExtColorsBuffer[i]=0.0;
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else
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ExtColorsBuffer[i]=1.0;
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}
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//---
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}
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//+------------------------------------------------------------------+
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