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     void OnTest1(wxCommandEvent& event);
  65     void OnTest2(wxCommandEvent& event);
  66     void OnTest3(wxCommandEvent& event);
  67
  68     DECLARE_EVENT_TABLE()
  69
  70     wxLocale& m_locale;
  71 };
  72
  73 // ----------------------------------------------------------------------------
  74 // constants
  75 // ----------------------------------------------------------------------------
  76
  77 // ID for the menu commands
  78 enum
  79 {
  80     INTERNAT_TEXT = wxID_HIGHEST + 1,
  81     INTERNAT_TEST,
  82     INTERNAT_TEST_1,
  83     INTERNAT_TEST_2,
  84     INTERNAT_TEST_3,
  85     INTERNAT_OPEN
  86 };
  87
  88 // ----------------------------------------------------------------------------
  89 // wxWidgets macros
  90 // ----------------------------------------------------------------------------
  91
  92 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  93     EVT_MENU(wxID_EXIT, MyFrame::OnQuit)
  94     EVT_MENU(wxID_ABOUT, MyFrame::OnAbout)
  95     EVT_MENU(INTERNAT_TEST, MyFrame::OnPlay)
  96     EVT_MENU(INTERNAT_OPEN, MyFrame::OnOpen)
  97     EVT_MENU(INTERNAT_TEST_1, MyFrame::OnTest1)
  98     EVT_MENU(INTERNAT_TEST_2, MyFrame::OnTest2)
  99     EVT_MENU(INTERNAT_TEST_3, MyFrame::OnTest3)
 100 END_EVENT_TABLE()
 101
 102 IMPLEMENT_APP(MyApp)
 103
 104 // ============================================================================
 105 // implementation
 106 // ============================================================================
 107
 108 // ----------------------------------------------------------------------------
 109 // MyApp
 110 // ----------------------------------------------------------------------------
 111
 112 // `Main program' equivalent, creating windows and returning main app frame
 113 bool MyApp::OnInit()
 114 {
 115     long lng = -1;
 116
 117     if ( argc == 2 )
 118     {
 119         // the parameter must be the lang index
 120         wxString tmp(argv[1]);
 121         tmp.ToLong(&lng);
 122     }
 123
 124     static const wxLanguage langIds[] =
 125     {
 126         wxLANGUAGE_DEFAULT,
 127         wxLANGUAGE_FRENCH,
 128         wxLANGUAGE_GERMAN,
 129         wxLANGUAGE_RUSSIAN,
 130         wxLANGUAGE_BULGARIAN,
 131         wxLANGUAGE_CZECH,
 132         wxLANGUAGE_POLISH,
 133         wxLANGUAGE_SWEDISH,
 134 #if wxUSE_UNICODE
 135         wxLANGUAGE_JAPANESE,
 136         wxLANGUAGE_GEORGIAN,
 137 #endif
 138         wxLANGUAGE_ENGLISH,
 139         wxLANGUAGE_ENGLISH_US
 140     };
 141
 142     if ( lng == -1 )
 143     {
 144         // note that it makes no sense to translate these strings, they are
 145         // shown before we set the locale anyhow
 146         const wxString langNames[] =
 147         {
 148             _T("System default"),
 149             _T("French"),
 150             _T("German"),
 151             _T("Russian"),
 152             _T("Bulgarian"),
 153             _T("Czech"),
 154             _T("Polish"),
 155             _T("Swedish"),
 156 #if wxUSE_UNICODE
 157             _T("Japanese"),
 158             _T("Georgian"),
 159 #endif
 160             _T("English"),
 161             _T("English (U.S.)")
 162         };
 163
 164         // the arrays should be in sync
 165         wxCOMPILE_TIME_ASSERT( WXSIZEOF(langNames) == WXSIZEOF(langIds),
 166                                LangArraysMismatch );
 167
 168         lng = wxGetSingleChoiceIndex
 169               (
 170                 _T("Please choose language:"),
 171                 _T("Language"),
 172                 WXSIZEOF(langNames),
 173                 langNames
 174               );
 175     }
 176
 177     if ( lng != -1 )
 178         m_locale.Init(langIds[lng]);
 179
 180     // normally this wouldn't be necessary as the catalog files would be found
 181     // in the default locations, but under Windows then the program is not
 182     // installed the catalogs are in the parent directory (because the binary
 183     // is in a subdirectory of samples/internat) where we wouldn't find them by
 184     // default
 185     wxLocale::AddCatalogLookupPathPrefix(wxT("."));
 186     wxLocale::AddCatalogLookupPathPrefix(wxT(".."));
 187
 188     // Initialize the catalogs we'll be using
 189     m_locale.AddCatalog(wxT("internat"));
 190
 191     // this catalog is installed in standard location on Linux systems and
 192     // shows that you may make use of the standard message catalogs as well
 193     //
 194     // if it's not installed on your system, it is just silently ignored
 195 #ifdef __LINUX__
 196     {
 197         wxLogNull noLog;
 198         m_locale.AddCatalog(_T("fileutils"));
 199     }
 200 #endif
 201
 202     // Create the main frame window
 203     MyFrame *frame = new MyFrame(m_locale);
 204
 205     // Give it an icon
 206     frame->SetIcon(wxICON(mondrian));
 207
 208     // Make a menubar
 209     wxMenu *file_menu = new wxMenu;
 210     file_menu->Append(wxID_ABOUT, _("&About..."));
 211     file_menu->AppendSeparator();
 212     file_menu->Append(wxID_EXIT, _("E&xit"));
 213
 214     wxMenu *test_menu = new wxMenu;
 215     test_menu->Append(INTERNAT_OPEN, _("&Open bogus file"));
 216     test_menu->Append(INTERNAT_TEST, _("&Play a game"));
 217     test_menu->AppendSeparator();
 218     test_menu->Append(INTERNAT_TEST_1, _("&1 _() (gettext)"));
 219     test_menu->Append(INTERNAT_TEST_2, _("&2 _N() (ngettext)"));
 220     test_menu->Append(INTERNAT_TEST_3, _("&3 wxTRANSLATE() (gettext_noop)"));
 221
 222     wxMenuBar *menu_bar = new wxMenuBar;
 223     menu_bar->Append(file_menu, _("&File"));
 224     menu_bar->Append(test_menu, _("&Test"));
 225     frame->SetMenuBar(menu_bar);
 226
 227     // Show the frame
 228     frame->Show(true);
 229     SetTopWindow(frame);
 230
 231     return true;
 232 }
 233
 234 // ----------------------------------------------------------------------------
 235 // MyFrame
 236 // ----------------------------------------------------------------------------
 237
 238 // main frame constructor
 239 MyFrame::MyFrame(wxLocale& locale)
 240        : wxFrame(NULL,
 241                  wxID_ANY,
 242                  _("International wxWidgets App")),
 243          m_locale(locale)
 244 {
 245     // Empty
 246 }
 247
 248 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event) )
 249 {
 250     Close(true);
 251 }
 252
 253 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 254 {
 255     wxString localeInfo;
 256     wxString locale = m_locale.GetLocale();
 257     wxString sysname = m_locale.GetSysName();
 258     wxString canname = m_locale.GetCanonicalName();
 259
 260     localeInfo.Printf(_("Language: %s\nSystem locale name:\n%s\nCanonical locale name: %s\n"),
 261         locale.c_str(), sysname.c_str(), canname.c_str() );
 262
 263     wxMessageDialog dlg(
 264                         this,
 265                         wxString(_("I18n sample\n(c) 1998, 1999 Vadim Zeitlin and Julian Smart"))
 266                                  + wxT("\n\n")
 267                                  + localeInfo,
 268                                  _("About Internat"),
 269                         wxOK | wxICON_INFORMATION
 270                        );
 271     dlg.ShowModal();
 272 }
 273
 274 void MyFrame::OnPlay(wxCommandEvent& WXUNUSED(event))
 275 {
 276     wxString str = wxGetTextFromUser
 277                    (
 278                     _("Enter your number:"),
 279                     _("Try to guess my number!"),
 280                     wxEmptyString,
 281                     this
 282                    );
 283
 284     if ( str.empty() )
 285     {
 286         // cancelled
 287         return;
 288     }
 289
 290     long num;
 291     if ( !str.ToLong(&num) || num < 0 )
 292     {
 293         str = _("You've probably entered an invalid number.");
 294     }
 295     else if ( num == 9 )
 296     {
 297         // this message is not translated (not in catalog) because we used _T()
 298         // and not _() around it
 299         str = _T("You've found a bug in this program!");
 300     }
 301     else if ( num == 17 )
 302     {
 303         str.clear();
 304
 305         // string must be split in two -- otherwise the translation would't be
 306         // found
 307         str << _("Congratulations! you've won. Here is the magic phrase:")
 308             << _("cannot create fifo `%s'");
 309     }
 310     else
 311     {
 312         // this is a more implicit way to write _() but note that if you use it
 313         // you must ensure that the strings get extracted in the message
 314         // catalog as by default xgettext won't do it (it only knows of _(),
 315         // not wxGetTranslation())
 316         str = wxGetTranslation(_T("Bad luck! try again..."));
 317     }
 318
 319     wxMessageBox(str, _("Result"), wxOK | wxICON_INFORMATION);
 320 }
 321
 322 void MyFrame::OnOpen(wxCommandEvent&)
 323 {
 324     // open a bogus file -- the error message should be also translated if
 325     // you've got wxstd.mo somewhere in the search path
 326     wxFile file(wxT("NOTEXIST.ING"));
 327 }
 328
 329 void MyFrame::OnTest1(wxCommandEvent& WXUNUSED(event))
 330 {
 331     const wxChar* title = _("Testing _() (gettext)");
 332     wxTextEntryDialog d(this, _("Please enter text to translate"),
 333         title, wxTRANSLATE("default value"));
 334     if (d.ShowModal() == wxID_OK)
 335     {
 336         wxString v = d.GetValue();
 337         wxString s(title);
 338         s << _T("\n") << v << _T(" -> ")
 339             << wxGetTranslation(v.c_str()) << _T("\n");
 340         wxMessageBox(s);
 341     }
 342 }
 343
 344 void MyFrame::OnTest2(wxCommandEvent& WXUNUSED(event))
 345 {
 346     const wxChar* title = _("Testing _N() (ngettext)");
 347     wxTextEntryDialog d(this,
 348         _("Please enter range for plural forms of \"n files deleted\" phrase"),
 349         title, _T("0-10"));
 350     if (d.ShowModal() == wxID_OK)
 351     {
 352         int first, last;
 353         wxSscanf(d.GetValue(), _T("%d-%d"), &first, &last);
 354         wxString s(title);
 355         s << _T("\n");
 356         for (int n = first; n <= last; ++n)
 357         {
 358             s << n << _T(" ") <<
 359                 wxPLURAL("file deleted", "files deleted", n) <<
 360                 _T("\n");
 361         }
 362         wxMessageBox(s);
 363     }
 364 }
 365
 366 void MyFrame::OnTest3(wxCommandEvent& WXUNUSED(event))
 367 {
 368     const wxChar* lines[] =
 369     {
 370         wxTRANSLATE("line 1"),
 371         wxTRANSLATE("line 2"),
 372         wxTRANSLATE("line 3"),
 373     };
 374     wxString s(_("Testing wxTRANSLATE() (gettext_noop)"));
 375     s << _T("\n");
 376     for (size_t i = 0; i < WXSIZEOF(lines); ++i)
 377     {
 378         s << lines[i] << _T(" -> ") << wxGetTranslation(lines[i]) << _T("\n");
 379     }
 380     wxMessageBox(s);
 381 }
 382
 383