samples/internat/internat.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        internat.cpp
   3 // Purpose:     Demonstrates internationalisation (i18n) support
   4 // Author:      Vadim Zeitlin/Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx/wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24 #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28 #include "wx/wx.h"
  29 #endif
  30
  31 #include "wx/intl.h"
  32 #include "wx/file.h"
  33 #include "wx/log.h"
  34
  35 #if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__)
  36 #include "mondrian.xpm"
  37 #endif
  38
  39 // ----------------------------------------------------------------------------
  40 // private classes
  41 // ----------------------------------------------------------------------------
  42
  43 // Define a new application type
  44 class MyApp: public wxApp
  45 {
  46 public:
  47     virtual bool OnInit();
  48
  49 protected:
  50     wxLocale m_locale; // locale we'll be using
  51 };
  52
  53 // Define a new frame type
  54 class MyFrame: public wxFrame
  55 {
  56 public:
  57     MyFrame(wxLocale& m_locale);
  58
  59 public:
  60     void OnQuit(wxCommandEvent& event);
  61     void OnAbout(wxCommandEvent& event);
  62     void OnPlay(wxCommandEvent& event);
  63     void OnOpen(wxCommandEvent& event);
  64
  65     DECLARE_EVENT_TABLE()
  66
  67     wxLocale& m_locale;
  68 };
  69
  70 // ----------------------------------------------------------------------------
  71 // constants
  72 // ----------------------------------------------------------------------------
  73
  74 // ID for the menu commands
  75 enum
  76 {
  77     INTERNAT_QUIT = 1,
  78     INTERNAT_TEXT,
  79     INTERNAT_TEST,
  80     INTERNAT_OPEN
  81 };
  82
  83 // ----------------------------------------------------------------------------
  84 // wxWindows macros
  85 // ----------------------------------------------------------------------------
  86
  87 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  88     EVT_MENU(INTERNAT_QUIT, MyFrame::OnQuit)
  89     EVT_MENU(wxID_ABOUT, MyFrame::OnAbout)
  90     EVT_MENU(INTERNAT_TEST, MyFrame::OnPlay)
  91     EVT_MENU(INTERNAT_OPEN, MyFrame::OnOpen)
  92 END_EVENT_TABLE()
  93
  94 IMPLEMENT_APP(MyApp)
  95
  96 // ============================================================================
  97 // implementation
  98 // ============================================================================
  99
 100 // ----------------------------------------------------------------------------
 101 // MyApp
 102 // ----------------------------------------------------------------------------
 103
 104 // `Main program' equivalent, creating windows and returning main app frame
 105 bool MyApp::OnInit()
 106 {
 107     long lng = -1;
 108
 109     if ( argc == 2 )
 110     {
 111         // the parameter must be the lang index
 112         wxString tmp(argv[1]);
 113         tmp.ToLong(&lng);
 114     }
 115
 116     static const wxLanguage langIds[] =
 117     {
 118         wxLANGUAGE_DEFAULT,
 119         wxLANGUAGE_FRENCH,
 120         wxLANGUAGE_GERMAN,
 121         wxLANGUAGE_RUSSIAN,
 122 #if wxUSE_UNICODE
 123         wxLANGUAGE_JAPANESE,
 124         wxLANGUAGE_GEORGIAN,
 125 #endif
 126         wxLANGUAGE_ENGLISH,
 127         wxLANGUAGE_ENGLISH_US
 128     };
 129
 130     if ( lng == -1 )
 131     {
 132         // note that it makes no sense to translate these strings, they are
 133         // shown before we set the locale anyhow
 134         const wxString langNames[] =
 135         {
 136             _T("System default"),
 137             _T("French"),
 138             _T("German"),
 139             _T("Russian"),
 140 #if wxUSE_UNICODE
 141             _T("Japanese"),
 142             _T("Georgian (no translation)"),
 143 #endif
 144             _T("English"),
 145             _T("English (U.S.)")
 146         };
 147
 148         // the arrays should be in sync
 149         wxCOMPILE_TIME_ASSERT( WXSIZEOF(langNames) == WXSIZEOF(langIds),
 150                                LangArraysMismatch );
 151
 152         lng = wxGetSingleChoiceIndex
 153               (
 154                 _T("Please choose language:"),
 155                 _T("Language"),
 156                 WXSIZEOF(langNames),
 157                 langNames
 158               );
 159     }
 160
 161     if ( lng != -1 )
 162         m_locale.Init(langIds[lng]);
 163
 164
 165     // Initialize the catalogs we'll be using
 166     m_locale.AddCatalog(wxT("internat"));
 167
 168     // this catalog is installed in standard location on Linux systems and
 169     // shows that you may make use of the standard message catalogs as well
 170     //
 171     // if it's not installed on your system, it is just silently ignored
 172 #ifdef __LINUX__
 173     {
 174         wxLogNull noLog;
 175         m_locale.AddCatalog(_T("fileutils"));
 176     }
 177 #endif
 178
 179     // Create the main frame window
 180     MyFrame *frame = new MyFrame(m_locale);
 181
 182     // Give it an icon
 183     frame->SetIcon(wxICON(mondrian));
 184
 185     // Make a menubar
 186     wxMenu *file_menu = new wxMenu;
 187     file_menu->Append(wxID_ABOUT, _("&About..."));
 188     file_menu->AppendSeparator();
 189     file_menu->Append(INTERNAT_QUIT, _("E&xit"));
 190
 191     wxMenu *test_menu = new wxMenu;
 192     test_menu->Append(INTERNAT_OPEN, _("&Open bogus file"));
 193     test_menu->Append(INTERNAT_TEST, _("&Play a game"));
 194
 195     wxMenuBar *menu_bar = new wxMenuBar;
 196     menu_bar->Append(file_menu, _("&File"));
 197     menu_bar->Append(test_menu, _("&Test"));
 198     frame->SetMenuBar(menu_bar);
 199
 200     // Show the frame
 201     frame->Show(TRUE);
 202     SetTopWindow(frame);
 203
 204     return TRUE;
 205 }
 206
 207 // ----------------------------------------------------------------------------
 208 // MyFrame
 209 // ----------------------------------------------------------------------------
 210
 211 // main frame constructor
 212 MyFrame::MyFrame(wxLocale& locale)
 213        : wxFrame(NULL,
 214                  -1,
 215                  _("International wxWindows App"),
 216                  wxPoint(50, 50),
 217                  wxSize(350, 60)),
 218          m_locale(locale)
 219 {
 220     // Empty
 221 }
 222
 223 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event) )
 224 {
 225     Close(TRUE);
 226 }
 227
 228 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 229 {
 230     wxString localeInfo;
 231     wxString locale = m_locale.GetLocale();
 232     wxString sysname = m_locale.GetSysName();
 233     wxString canname = m_locale.GetCanonicalName();
 234
 235     localeInfo.Printf(_("Language: %s\nSystem locale name: %s\nCanonical locale name: %s\n"),
 236         locale.c_str(), sysname.c_str(), canname.c_str() );
 237
 238     wxMessageDialog
 239     (
 240         this,
 241         wxString(_("I18n sample\n(c) 1998, 1999 Vadim Zeitlin and Julian Smart"))
 242             + wxT("\n\n")
 243             + localeInfo,
 244         _("About Internat"),
 245         wxOK | wxICON_INFORMATION
 246     ).ShowModal();
 247 }
 248
 249 void MyFrame::OnPlay(wxCommandEvent& WXUNUSED(event))
 250 {
 251     wxString str = wxGetTextFromUser
 252                    (
 253                     _("Enter your number:"),
 254                     _("Try to guess my number!"),
 255                     wxEmptyString,
 256                     this
 257                    );
 258
 259     if ( str.empty() )
 260     {
 261         // cancelled
 262         return;
 263     }
 264
 265     long num;
 266     if ( !str.ToLong(&num) || num < 0 )
 267     {
 268         str = _("You've probably entered an invalid number.");
 269     }
 270     else if ( num == 9 )
 271     {
 272         // this message is not translated (not in catalog) because we used _T()
 273         // and not _() around it
 274         str = _T("You've found a bug in this program!");
 275     }
 276     else if ( num == 17 )
 277     {
 278         str.clear();
 279
 280         // string must be split in two -- otherwise the translation would't be
 281         // found
 282         str << _("Congratulations! you've won. Here is the magic phrase:")
 283             << _("cannot create fifo `%s'");
 284     }
 285     else
 286     {
 287         // this is a more implicit way to write _() but note that if you use it
 288         // you must ensure that the strings get extracted in the message
 289         // catalog as by default xgettext won't do it (it only knows of _(),
 290         // not wxGetTranslation())
 291         str = wxGetTranslation(_T("Bad luck! try again..."));
 292     }
 293
 294     wxMessageBox(str, _("Result"), wxOK | wxICON_INFORMATION);
 295 }
 296
 297 void MyFrame::OnOpen(wxCommandEvent&)
 298 {
 299     // open a bogus file -- the error message should be also translated if you've
 300     // got wxstd.mo somewhere in the search path
 301     wxFile file(wxT("NOTEXIST.ING"));
 302 }
 303