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