FileMenu.cxx

Go to the documentation of this file.

#include "EventDisplayBase/FileMenu.h"
#include <cstdlib>
#include <string>
#include <iostream>
#include "TGMsgBox.h"
#include "TGMenu.h"
#include "TGLayout.h"
#include "TGFileDialog.h"
#include "EventDisplayBase/evdb.h"
#include "EventDisplayBase/PrintDialog.h"
#include "EventDisplayBase/IoModule.h"
using namespace evdb;

// Define ID codes for the actions on the file menu
enum {
  kM_FILE_OPEN,
  kM_FILE_SAVE,
  kM_FILE_SAVEAS,
  kM_FILE_CLOSE,
  kM_FILE_PRINT,
  kM_FILE_QUIT
};

//......................................................................

FileMenu::FileMenu(TGMenuBar* menubar, TGMainFrame* mf) :
  fMainFrame(mf)
{
  fFileMenu = new TGPopupMenu(gClient->GetRoot());
  fLayout   = new TGLayoutHints(kLHintsTop | kLHintsLeft, 0, 4, 0, 0);
  
  // Create the list of functions. Associate each which a command code
  fFileMenu->AddEntry("&Open File...", kM_FILE_OPEN);
  fFileMenu->AddEntry("&Save",         kM_FILE_SAVE);
  fFileMenu->AddEntry("S&ave as...",   kM_FILE_SAVEAS);
  fFileMenu->AddSeparator();
  fFileMenu->AddEntry("&Print",        kM_FILE_PRINT);
  fFileMenu->AddSeparator();
  fFileMenu->AddEntry("&Quit",         kM_FILE_QUIT);
  
  fFileMenu->Connect("Activated(Int_t)",
                     "evdb::FileMenu",this,"HandleMenu(int)");
  
  // Attach the menu to the menu bar
  menubar->AddPopup("&File",fFileMenu,fLayout);
}

//......................................................................

FileMenu::~FileMenu() 
{
  if (fLayout)   { delete fLayout;   fLayout   = 0; }
  if (fFileMenu) { delete fFileMenu; fFileMenu = 0; }
}

//......................................................................

void FileMenu::HandleMenu(int menu) 
{
  switch(menu) {
  case kM_FILE_OPEN:   this->Open();   break;
  case kM_FILE_SAVE:   this->Save();   break;
  case kM_FILE_SAVEAS: this->SaveAs(); break;
  case kM_FILE_PRINT:  this->Print();  break;
  case kM_FILE_QUIT:   this->Quit(); break;
  default: this->NoImpl("??"); break;
  }
}

//......................................................................

int FileMenu::Open() 
{
  static TString dir(""); // Static so that directory remembers where
                          // we were last time
  const char* filetypes[] = { "ROOT files",  "*.root",
                              "All files",   "*",
                              0,             0 };
  TGFileInfo finfo;
  
  finfo.fFileTypes = filetypes;
  finfo.fIniDir    = StrDup(dir.Data());
  
  new TGFileDialog(evdb::TopWindow(),evdb::TopWindow(),kFDOpen, &finfo);
  
  // Add the file to the list of files in the IoModule. Make it the
  // current file
  IoModule::Instance()->AddFile(finfo.fFilename);
  IoModule::Instance()->GoToFile(finfo.fFilename);
  IoModule::Instance()->Reload();
  
  return 1;
}

//......................................................................

int FileMenu::Save() 
{
  this->NoImpl("Save");
  return 0;
}

//......................................................................

int FileMenu::SaveAs() 
{
  this->NoImpl("SaveAs");
  return 0;
}

//......................................................................

int FileMenu::Print() 
{
  new PrintDialog();
  return 1;
}

//......................................................................

int FileMenu::Quit()
{
  std::cout << "\n";
  exit(0);
}

//......................................................................

int FileMenu::NoImpl(const char* method) 
{
  std::string s;
  s = "Sorry action '"; s += method; s+= "' is not implemented.\n";
  // Why isn't this a memory leak? Dunno, but its seems the TG classes
  // are all managed by TGClient which takes care of deletion
  new TGMsgBox(evdb::TopWindow(), fMainFrame,
               "No implementation",s.c_str(),kMBIconExclamation);
  return 0;
}

---