i18npool/source/isolang/inwnt.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include <sal/config.h>
  22
  23 #define WINVER 0x0500
  24
  25 #ifdef _MSC_VER
  26 #pragma warning(push,1) // disable warnings within system headers
  27 #endif
  28 #include <windef.h>     // needed by winnls.h
  29 #include <winbase.h>    // needed by winnls.h
  30 #include <winnls.h>
  31 #ifdef _MSC_VER
  32 #pragma warning(pop)
  33 #endif
  34 #include <rtl/instance.hxx>
  35 #include "i18npool/mslangid.hxx"
  36
  37 static LanguageType nImplSystemLanguage = LANGUAGE_DONTKNOW;
  38 static LanguageType nImplSystemUILanguage = LANGUAGE_DONTKNOW;
  39
  40 // =======================================================================
  41
  42 static LanguageType GetSVLang( LANGID nWinLangId )
  43 {
  44     // No Translation, we work with the original MS code without the SORT_ID.
  45     // So we can get never LANG-ID's from MS, which are currently not defined
  46     // by us.
  47     return LanguageType( static_cast<sal_uInt16>(nWinLangId & 0xffff));
  48 }
  49
  50 // -----------------------------------------------------------------------
  51
  52 typedef LANGID (WINAPI *getLangFromEnv)();
  53
  54 static void getPlatformSystemLanguageImpl( LanguageType& rSystemLanguage,
  55         getLangFromEnv pGetUserDefault, getLangFromEnv pGetSystemDefault )
  56 {
  57     LanguageType nLang = rSystemLanguage;
  58     if ( nLang == LANGUAGE_DONTKNOW )
  59     {
  60         ::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex());
  61         nLang = rSystemLanguage;
  62         if ( nLang == LANGUAGE_DONTKNOW )
  63         {
  64             LANGID nLangId;
  65
  66             nLangId = (pGetUserDefault)();
  67             nLang = GetSVLang( nLangId );
  68
  69             if ( nLang == LANGUAGE_DONTKNOW )
  70             {
  71                 nLangId = (pGetSystemDefault)();
  72                 nLang = GetSVLang( nLangId );
  73             }
  74             OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
  75             rSystemLanguage = nLang;
  76         }
  77         else
  78         {
  79             OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
  80         }
  81     }
  82 }
  83
  84 // -----------------------------------------------------------------------
  85
  86 LanguageType MsLangId::getPlatformSystemLanguage()
  87 {
  88     getPlatformSystemLanguageImpl( nImplSystemLanguage,
  89             &GetUserDefaultLangID, &GetSystemDefaultLangID);
  90     return nImplSystemLanguage;
  91 }
  92
  93 // -----------------------------------------------------------------------
  94
  95 LanguageType MsLangId::getPlatformSystemUILanguage()
  96 {
  97     // TODO: this could be distinguished, #if(WINVER >= 0x0500)
  98     // needs _run_ time differentiation though, not at compile time.
  99     getPlatformSystemLanguageImpl( nImplSystemUILanguage,
 100             &GetUserDefaultUILanguage, &GetSystemDefaultUILanguage);
 101     return nImplSystemUILanguage;
 102 }
 103
 104 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */