custom.C

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/// \file
/// \ingroup tutorial_http
///  This program creates and fills one and two dimensional histogram
///  Macro used to demonstrate usage of custom HTML page in custom.htm
///  One can use plain JavaScript to assign different actions with HTML buttons
///
/// \macro_code
///
/// \author Sergey Linev
 
#include "TH1.h"
#include "TH2.h"
#include "THttpServer.h"
#include "TRandom3.h"
#include "TSystem.h"
#include <string>
 
void custom()
{
   // Create two histograms
   TH1F *hpx = new TH1F("hpx", "This is the px distribution", 100, -4, 4);
   TH2F *hpxpy = new TH2F("hpxpy", "py vs px", 40, -4, 4, 40, -4, 4);
 
   // http server with port 8080, use jobname as top-folder name
   THttpServer *serv = new THttpServer("http:8080");
 
   // Detect macro file location to specify full path to the HTML file
   std::string fname = __FILE__;
   auto pos = fname.find("custom.C");
   if (pos > 0)
      fname.resize(pos);
   else
      fname.clear();
   fname.append("custom.htm");
 
   // use custom web page as default
   serv->SetDefaultPage(fname);
 
   // Fill histograms randomly
   TRandom3 random;
   Float_t px, py;
 
   // press Ctrl-C to stop macro
   while (!gSystem->ProcessEvents()) {
      random.Rannor(px,py);
      hpx->Fill(px);
      hpxpy->Fill(px,py);
   }
}