don't generate an endless stream of asserts for the 0-sized images

[wxWidgets.git] / samples / internat / internat.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        internat.cpp
// Purpose:     Demonstrates internationalisation (i18n) support
// Author:      Vadim Zeitlin/Julian Smart
// Modified by:
// Created:     04/01/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart and Markus Holzem
// Licence:     wxWindows license
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation
#pragma interface
#endif

// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif

#include "wx/intl.h"
#include "wx/file.h"
#include "wx/log.h"

#if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__)
#include "mondrian.xpm"
#endif

// Define a new application type
class MyApp: public wxApp
{
public:
  virtual bool OnInit();

protected:
  wxLocale m_locale; // locale we'll be using
};

// Define a new frame type
class MyFrame: public wxFrame
{ 
public:
  MyFrame(wxFrame *frame, const wxChar *title, int x, int y, int w, int h,
          wxLocale& m_locale);

public:
  void OnQuit(wxCommandEvent& event);
  void OnAbout(wxCommandEvent& event);
  void OnPlay(wxCommandEvent& event);
  void OnOpen(wxCommandEvent& event);

  DECLARE_EVENT_TABLE()
  
  wxLocale& m_locale;
};

// ID for the menu commands
enum
{
  MINIMAL_QUIT = 1,
  MINIMAL_TEXT,
  MINIMAL_ABOUT,
  MINIMAL_TEST,
  MINIMAL_OPEN
};

BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  EVT_MENU(MINIMAL_QUIT, MyFrame::OnQuit)
  EVT_MENU(MINIMAL_ABOUT, MyFrame::OnAbout)
  EVT_MENU(MINIMAL_TEST, MyFrame::OnPlay)
  EVT_MENU(MINIMAL_OPEN, MyFrame::OnOpen)
END_EVENT_TABLE()

IMPLEMENT_APP(MyApp)


// `Main program' equivalent, creating windows and returning main app frame
bool MyApp::OnInit()
{
  const wxString langs[] =
  {
      _T("(System default)"),
      _T("French"),
      _T("German"),
      _T("Russian"),
      _T("English"),
      _T("English (U.S.)")
  };

  SetExitOnFrameDelete(FALSE);
  int lng = wxGetSingleChoiceIndex(_T("Please choose language:"), _T("Language"), 
                                   WXSIZEOF(langs), langs);
  SetExitOnFrameDelete(TRUE);

  switch (lng)
  {
      case 0 : m_locale.Init(wxLANGUAGE_DEFAULT); break;
      case 1 : m_locale.Init(wxLANGUAGE_FRENCH); break;
      case 2 : m_locale.Init(wxLANGUAGE_GERMAN); break;
      case 3 : m_locale.Init(wxLANGUAGE_RUSSIAN); break;
      case 4 : m_locale.Init(wxLANGUAGE_ENGLISH); break;
      case -1:
      case 5 : m_locale.Init(wxLANGUAGE_ENGLISH_US); break;
  }

  // Initialize the catalogs we'll be using
  /* not needed any more, done in wxLocale ctor
  m_locale.AddCatalog("wxstd");      // 1) for library messages
  */
  m_locale.AddCatalog(wxT("internat"));      // 2) our private one
  /* this catalog is installed in standard location on Linux systems,
     it might not be installed on yours - just ignore the errrors
     or comment out this line then */
#ifdef __LINUX__
  {
    wxLogNull noLog;
    m_locale.AddCatalog("fileutils");  // 3) and another just for testing
  }
#endif
  
  // Create the main frame window
  MyFrame *frame = new MyFrame((wxFrame *) NULL, _("International wxWindows App"),
                               50, 50, 350, 60, m_locale);

  // Give it an icon
  frame->SetIcon(wxICON(mondrian));

  // Make a menubar
  wxMenu *file_menu = new wxMenu;
  file_menu->Append(MINIMAL_ABOUT, _("&About..."));
  file_menu->AppendSeparator();
  file_menu->Append(MINIMAL_QUIT, _("E&xit"));

  wxMenu *test_menu = new wxMenu;
  test_menu->Append(MINIMAL_OPEN, _("&Open bogus file"));
  test_menu->Append(MINIMAL_TEST, _("&Play a game"));

  wxMenuBar *menu_bar = new wxMenuBar;
  menu_bar->Append(file_menu, _("&File"));
  menu_bar->Append(test_menu, _("&Test"));
  frame->SetMenuBar(menu_bar);

  // Show the frame
  frame->Show(TRUE);
  SetTopWindow(frame);

  return TRUE;
}

// My frame constructor
MyFrame::MyFrame(wxFrame *frame, const wxChar *title, int x, int y,
                 int w, int h, wxLocale& l)
       : wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h)),
         m_locale(l)
{
}

void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event) )
{
  Close(TRUE);
}

void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
  wxString localeInfo;
  localeInfo.Printf(_("Language: %s\nSystem locale name: %s\nCanonical locale name: %s\n"),
                      m_locale.GetLocale(),
                      m_locale.GetSysName().c_str(),
                      m_locale.GetCanonicalName().c_str());

  wxMessageDialog(this, wxString(_("I18n sample\n(c) 1998, 1999 Vadim Zeitlin and Julian Smart"))
                          + wxT("\n\n") + localeInfo,
                  _("About Internat"), wxOK | wxICON_INFORMATION).ShowModal();
}

void MyFrame::OnPlay(wxCommandEvent& WXUNUSED(event))
{
  wxString str = wxGetTextFromUser(_("Enter your number:"),
                                   _("Try to guess my number!"),
                                  "", this);
  if ( str.IsEmpty() )
      return;

  int num;
  wxSscanf(str, wxT("%d"), &num);
  if ( num == 0 )
    str = _("You've probably entered an invalid number.");
  else if ( num == 9 )  // this message is not translated (not in catalog)
    str = "You've found a bug in this program!";
  else if ( num != 17 ) // a more implicit way to write _()
    str = wxGetTranslation(wxT("Bad luck! try again..."));
  else {
    str.Empty();
    // string must be split in two -- otherwise the translation won't be found
    str << _("Congratulations! you've won. Here is the magic phrase:")
        << _("cannot create fifo `%s'");
  }

  wxMessageBox(str, _("Result"), wxOK | wxICON_INFORMATION);
}

void MyFrame::OnOpen(wxCommandEvent&)
{
  // open a bogus file -- the error message should be also translated if you've
  // got wxstd.mo somewhere in the search path
  wxFile file(wxT("NOTEXIST.ING"));
}