Line data    Source code

       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 "tools/IconCache.hxx"
      21             : 
      22             : #include "sdresid.hxx"
      23             : #include <osl/doublecheckedlocking.h>
      24             : #include <osl/getglobalmutex.hxx>
      25             : #include <unordered_map>
      26             : 
      27             : namespace sd {
      28             : 
      29             : //===== IconCache::Implementation =============================================
      30             : 
      31          17 : class IconCache::Implementation
      32             : {
      33             : private:
      34             :     friend class IconCache;
      35             : 
      36             :     /** This pointer holds a valid reference from first time that
      37             :         IconCache::Instance() is called to the end of the sd module when the
      38             :         cache is destroyed from SdGlobalResourceContainer.
      39             :     */
      40             :     static IconCache* mpInstance;
      41             : 
      42             :     typedef std::unordered_map<sal_uInt16,Image> ImageContainer;
      43             :     ImageContainer maContainer;
      44             : 
      45             :     Image GetIcon (sal_uInt16 nResourceId);
      46             : };
      47             : 
      48             : IconCache* IconCache::Implementation::mpInstance = NULL;
      49             : 
      50         652 : Image IconCache::Implementation::GetIcon (sal_uInt16 nResourceId)
      51             : {
      52         652 :     Image aResult;
      53         652 :     ImageContainer::iterator iImage;
      54         652 :     iImage = maContainer.find (nResourceId);
      55         652 :     if (iImage == maContainer.end())
      56             :     {
      57          18 :         aResult = Image(BitmapEx(SdResId(nResourceId)));
      58          18 :         maContainer[nResourceId] = aResult;
      59             :     }
      60             :     else
      61         634 :         aResult = iImage->second;
      62         652 :     return aResult;
      63             : }
      64             : 
      65             : //===== IconCache =============================================================
      66             : 
      67             : //static
      68         652 : IconCache& IconCache::Instance()
      69             : {
      70         652 :     if (Implementation::mpInstance == NULL)
      71             :     {
      72             :         ::osl::GetGlobalMutex aMutexFunctor;
      73           9 :         ::osl::MutexGuard aGuard (aMutexFunctor());
      74           9 :         if (Implementation::mpInstance == NULL)
      75             :         {
      76           9 :             IconCache* pCache = new IconCache ();
      77           9 :             SdGlobalResourceContainer::Instance().AddResource (
      78          18 :                 ::std::unique_ptr<SdGlobalResource>(pCache));
      79             :             OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
      80           9 :             Implementation::mpInstance = pCache;
      81           9 :         }
      82             :     }
      83             :     else
      84             :     {
      85             :         OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
      86             :     }
      87             : 
      88             :     DBG_ASSERT(Implementation::mpInstance!=NULL,
      89             :         "IconCache::Instance(): instance is NULL");
      90         652 :     return *Implementation::mpInstance;
      91             : }
      92             : 
      93         652 : Image IconCache::GetIcon (sal_uInt16 nResourceId)
      94             : {
      95         652 :     return mpImpl->GetIcon (nResourceId);
      96             : }
      97             : 
      98           9 : IconCache::IconCache()
      99           9 :     : mpImpl (new Implementation())
     100             : {
     101           9 : }
     102             : 
     103          16 : IconCache::~IconCache()
     104             : {
     105             :     // empty
     106          16 : }
     107             : 
     108             : } // end of namespace sd
     109             : 
     110             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */