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