doc/v606/histobrowser_8C.html

TGFileBrowser *g_hlt_browser = 0;

TCanvas       *g_hlt_canvas  = 0;


void histobrowser(const char* name="HLT Histos")

{

   TEveManager::Create();


   // --- Create special browser


   gEve->GetBrowser()->StartEmbedding(0);

   g_hlt_browser = gEve->GetBrowser()->MakeFileBrowser();

   gEve->GetBrowser()->StopEmbedding(name);


   // --- Fill and register some lists/folders/histos


   gDirectory = 0;

   TH1F* h;


   TList* l = new TList;

   l->SetName("Cilka");

   h = new TH1F("Foo", "Bar", 51, 0, 1);

   for (Int_t i=0; i<500; ++i)

      h->Fill(gRandom->Gaus(.63, .2));

   l->Add(h);

   g_hlt_browser->Add(l);


   TFolder* f = new TFolder("Booboayes", "Statisticos");

   h = new TH1F("Fooes", "Baros", 51, 0, 1);

   for (Int_t i=0; i<2000; ++i) {

      h->Fill(gRandom->Gaus(.7, .1));

      h->Fill(gRandom->Gaus(.3, .1));

   }

   f->Add(h);

   g_hlt_browser->Add(f);


   h = new TH1F("Fooesoto", "Barosana", 51, 0, 1);

   for (Int_t i=0; i<4000; ++i) {

      h->Fill(gRandom->Gaus(.25, .02), 0.04);

      h->Fill(gRandom->Gaus(.5, .1));

      h->Fill(gRandom->Gaus(.75, .02), 0.04);

   }

   g_hlt_browser->Add(h);


   // --- Add some macros.


   TMacro* m;


   m = new TMacro;

   m->AddLine("{ g_hlt_canvas->Clear();"

              "  g_hlt_canvas->cd();"

              "  g_hlt_canvas->Update(); }");

   m->SetName("Clear Canvas");

   g_hlt_browser->Add(m);


   m = new TMacro;

   m->AddLine("{ g_hlt_canvas->Clear();"

              "  g_hlt_canvas->Divide(2,2);"

              "  g_hlt_canvas->cd(1);"

              "  g_hlt_canvas->Update(); }");

   m->SetName("Split Canvas");

   g_hlt_browser->Add(m);


   // --- Create an embedded canvas


   gEve->GetBrowser()->StartEmbedding(1);

   g_hlt_canvas = new TCanvas;

   gEve->GetBrowser()->StopEmbedding("HLT Canvas");

}