i18nlangtag/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 #ifdef _MSC_VER
  24 #pragma warning(push,1) // disable warnings within system headers
  25 #endif
  26 #include <windef.h>
  27 #include <winbase.h>
  28 #include <winnls.h>
  29 #ifdef _MSC_VER
  30 #pragma warning(pop)
  31 #endif
  32 #include <rtl/instance.hxx>
  33 #include "i18nlangtag/mslangid.hxx"
  34
  35 static LanguageType nImplSystemLanguage = LANGUAGE_DONTKNOW;
  36 static LanguageType nImplSystemUILanguage = LANGUAGE_DONTKNOW;
  37
  38 // =======================================================================
  39
  40 static LanguageType GetSVLang( LANGID nWinLangId )
  41 {
  42     // No Translation, we work with the original MS code without the SORT_ID.
  43     // So we can get never LANG-ID's from MS, which are currently not defined
  44     // by us.
  45     return LanguageType( static_cast<sal_uInt16>(nWinLangId & 0xffff));
  46 }
  47
  48 // -----------------------------------------------------------------------
  49
  50 typedef LANGID (WINAPI *getLangFromEnv)();
  51
  52 static void getPlatformSystemLanguageImpl( LanguageType& rSystemLanguage,
  53         getLangFromEnv pGetUserDefault, getLangFromEnv pGetSystemDefault )
  54 {
  55     LanguageType nLang = rSystemLanguage;
  56     if ( nLang == LANGUAGE_DONTKNOW )
  57     {
  58         ::osl::MutexGuard aGuard( ::osl::Mutex::getGlobalMutex());
  59         nLang = rSystemLanguage;
  60         if ( nLang == LANGUAGE_DONTKNOW )
  61         {
  62             LANGID nLangId;
  63
  64             nLangId = (pGetUserDefault)();
  65             nLang = GetSVLang( nLangId );
  66
  67             if ( nLang == LANGUAGE_DONTKNOW )
  68             {
  69                 nLangId = (pGetSystemDefault)();
  70                 nLang = GetSVLang( nLangId );
  71             }
  72             OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
  73             rSystemLanguage = nLang;
  74         }
  75         else
  76         {
  77             OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
  78         }
  79     }
  80 }
  81
  82 // -----------------------------------------------------------------------
  83
  84 LanguageType MsLangId::getPlatformSystemLanguage()
  85 {
  86     getPlatformSystemLanguageImpl( nImplSystemLanguage,
  87             &GetUserDefaultLangID, &GetSystemDefaultLangID);
  88     return nImplSystemLanguage;
  89 }
  90
  91 // -----------------------------------------------------------------------
  92
  93 LanguageType MsLangId::getPlatformSystemUILanguage()
  94 {
  95     // TODO: this could be distinguished, #if(WINVER >= 0x0500)
  96     // needs _run_ time differentiation though, not at compile time.
  97     getPlatformSystemLanguageImpl( nImplSystemUILanguage,
  98             &GetUserDefaultUILanguage, &GetSystemDefaultUILanguage);
  99     return nImplSystemUILanguage;
 100 }
 101
 102 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */