sd/source/ui/slidesorter/view/SlsFontProvider.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 #include <memory>
  21 #include <view/SlsFontProvider.hxx>
  22
  23 #include <controller/SlideSorterController.hxx>
  24
  25 #include <sfx2/app.hxx>
  26 #include <osl/getglobalmutex.hxx>
  27 #include <com/sun/star/uno/RuntimeException.hpp>
  28
  29 using namespace ::sd::slidesorter;
  30
  31 namespace sd { namespace slidesorter { namespace view {
  32
  33 FontProvider* FontProvider::mpInstance = nullptr;
  34
  35 FontProvider& FontProvider::Instance()
  36 {
  37     if (mpInstance == nullptr)
  38     {
  39         ::osl::GetGlobalMutex aMutexFunctor;
  40         ::osl::MutexGuard aGuard (aMutexFunctor());
  41         if (mpInstance == nullptr)
  42         {
  43             // Create an instance of the class and register it at the
  44             // SdGlobalResourceContainer so that it is eventually released.
  45             FontProvider* pInstance = new FontProvider();
  46             SdGlobalResourceContainer::Instance().AddResource (
  47                 ::std::unique_ptr<SdGlobalResource>(pInstance));
  48             OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
  49             mpInstance = pInstance;
  50         }
  51     }
  52     else
  53     {
  54         OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
  55     }
  56
  57     // We throw an exception when for some strange reason no instance of
  58     // this class exists.
  59     if (mpInstance == nullptr)
  60         throw css::uno::RuntimeException("com.sun.star.document.IndexedPropertyValues",
  61             nullptr);
  62
  63     return *mpInstance;
  64 }
  65
  66 FontProvider::FontProvider()
  67     : maFont()
  68 {
  69 }
  70
  71 FontProvider::~FontProvider()
  72 {
  73 }
  74
  75 void FontProvider::Invalidate()
  76 {
  77     maFont.reset();
  78 }
  79
  80 } } }  // end of namespace ::sd::slidesorter::view
  81
  82 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */