swh:1:snp:af87cd67498ef4fe47c76ed3e7caffe5b61facaf
Tip revision: 6ceee81af26dfa03fb19567d7598078506ed1254 authored by Fons Rademakers on 09 May 2012, 10:56:45 UTC
tag patch release v5-32-03.
tag patch release v5-32-03.
Tip revision: 6ceee81
gtreeTableTest.C
// This TableTest class is a simple example of how to use a TGTreeTable.
// TableTest inherits from TGMainFrame to create a top
// level frame to embed the TGTreeTable in. First, the staff.root file
// is opened to obtain a tree. A TGTreeTable is then created using the
// tree. In the end, the table is added to the TGMainFrame that is the
// TableTest and the necessary calls to correctly draw the window are
// made. For more information about the use of TGTreeTable, see it's
// documentation.
// author, Roel Aaij 13/07/2007
#include <iostream>
#include <TApplication.h>
#include <TGClient.h>
#include <TGButton.h>
#include <TGFrame.h>
#include <TGWindow.h>
#include <TString.h>
#include <TGTreeTable.h>
#include <TFile.h>
#include <TNtuple.h>
#include <TTree.h>
// A little class to automatically handle the generation of unique
// widget ids.
class IDList {
private:
Int_t nID; // Generates unique widget IDs.
public:
IDList() : nID(0) {}
~IDList() {}
Int_t GetUnID(void) { return ++nID ; }
};
class TableTest : public TGMainFrame {
private:
IDList fIDs; // Generator for unique widget IDs.
UInt_t fNTableRows;
UInt_t fNTableColumns;
TGTreeTable *fTreeTable;
TFile *fFile;
public:
TableTest(const TGWindow *p, UInt_t ntrows, UInt_t ntcols,
UInt_t w = 100, UInt_t h = 100);
virtual ~TableTest() ;
void DoExit() ;
TGTreeTable *GetTable() { return fTreeTable; }
ClassDef(TableTest, 0)
};
TableTest::TableTest(const TGWindow *p, UInt_t ntrows, UInt_t ntcols,
UInt_t w, UInt_t h)
: TGMainFrame(p, w, h), fNTableRows(ntrows), fNTableColumns(ntcols),
fTreeTable(0)
{
SetCleanup(kDeepCleanup) ;
Connect("CloseWindow()", "TableTest", this, "DoExit()") ;
DontCallClose() ;
// Open the root file
fFile = new TFile("$ROOTSYS/tutorials/tree/cernstaff.root");
if (!fFile || fFile->IsZombie()) {
printf("Please run <ROOT location>/tutorials/tree/cernbuild.C first.");
return;
}
// Get the tree from the file.
TTree *tree = (TTree *)fFile->Get("T");
// Setup the expressions for the columns and the selection of the
// interface.
TString varexp = "px:py:pz:random:sin(px):log(px/py):log(pz)";
TString select = "px>0 && py>0 && pz>0";
TString options = "";
// Create the table and add it to the TableTest that is a TGMainFrame
fTreeTable = new TGTreeTable(this, fIDs.GetUnID(), tree);
AddFrame(fTreeTable, new TGLayoutHints(kLHintsExpandX | kLHintsExpandY));
// Calls to layout and draw the TableTest that is a TGMainFrame.
SetWindowName("TGTreeTable Test") ;
MapSubwindows() ;
Layout();
Resize(GetDefaultWidth()+20, 600) ;
MapWindow() ;
} ;
TableTest::~TableTest()
{
// Destructor
fFile->Close();
Cleanup() ;
}
void TableTest::DoExit()
{
// Exit this application via the Exit button or Window Manager.
// Use one of the both lines according to your needs.
// Please note to re-run this macro in the same ROOT session,
// you have to compile it to get signals/slots 'on place'.
DeleteWindow(); // to stay in the ROOT session
// gApplication->Terminate(); // to exit and close the ROOT session
}
TGTreeTable *gtreeTableTest(UInt_t ntrows = 50, UInt_t ntcols = 10) {
TableTest *test = new TableTest(0, ntrows, ntcols, 500, 200);
return test->GetTable();
}