133 lines
3.4 KiB
C++
133 lines
3.4 KiB
C++
/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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// MARKER(update_precomp.py): autogen include statement, do not remove
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#include "precompiled_sd.hxx"
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#include "tools/IconCache.hxx"
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#include "sdresid.hxx"
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#include <hash_map>
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#include <osl/doublecheckedlocking.h>
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#include <osl/getglobalmutex.hxx>
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namespace sd {
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//===== IconCache::Implementation =============================================
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class IconCache::Implementation
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{
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private:
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friend class IconCache;
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/** This pointer holds a valid reference from first time that
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IconCache::Instance() is called to the end of the sd module when the
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cache is destroyed from SdGlobalResourceContainer.
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*/
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static IconCache* mpInstance;
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typedef ::std::hash_map<USHORT,Image> ImageContainer;
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ImageContainer maContainer;
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Image GetIcon (USHORT nResourceId);
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};
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IconCache* IconCache::Implementation::mpInstance = NULL;
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Image IconCache::Implementation::GetIcon (USHORT nResourceId)
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{
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Image aResult;
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ImageContainer::iterator iImage;
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iImage = maContainer.find (nResourceId);
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if (iImage == maContainer.end())
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{
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aResult = Image(BitmapEx(SdResId(nResourceId)));
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maContainer[nResourceId] = aResult;
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}
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else
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aResult = iImage->second;
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return aResult;
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}
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//===== IconCache =============================================================
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//static
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IconCache& IconCache::Instance (void)
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{
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if (Implementation::mpInstance == NULL)
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{
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::osl::GetGlobalMutex aMutexFunctor;
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::osl::MutexGuard aGuard (aMutexFunctor());
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if (Implementation::mpInstance == NULL)
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{
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IconCache* pCache = new IconCache ();
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SdGlobalResourceContainer::Instance().AddResource (
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::std::auto_ptr<SdGlobalResource>(pCache));
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OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
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Implementation::mpInstance = pCache;
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}
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}
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else
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{
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OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
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}
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DBG_ASSERT(Implementation::mpInstance!=NULL,
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"IconCache::Instance(): instance is NULL");
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return *Implementation::mpInstance;
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}
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Image IconCache::GetIcon (USHORT nResourceId)
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{
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return mpImpl->GetIcon (nResourceId);
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}
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IconCache::IconCache (void)
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: mpImpl (new Implementation())
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{
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}
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IconCache::~IconCache (void)
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{
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// empty
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}
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} // end of namespace sd
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