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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sd.hxx"
#include "tools/IconCache.hxx"
#include "sdresid.hxx"
#include <hash_map>
#include <osl/doublecheckedlocking.h>
#include <osl/getglobalmutex.hxx>
namespace sd {
//===== IconCache::Implementation =============================================
class IconCache::Implementation
{
private:
friend class IconCache;
/** This pointer holds a valid reference from first time that
IconCache::Instance() is called to the end of the sd module when the
cache is destroyed from SdGlobalResourceContainer.
*/
static IconCache* mpInstance;
typedef ::std::hash_map<USHORT,Image> ImageContainer;
ImageContainer maContainer;
Image GetIcon (USHORT nResourceId);
};
IconCache* IconCache::Implementation::mpInstance = NULL;
Image IconCache::Implementation::GetIcon (USHORT nResourceId)
{
Image aResult;
ImageContainer::iterator iImage;
iImage = maContainer.find (nResourceId);
if (iImage == maContainer.end())
{
aResult = Image(BitmapEx(SdResId(nResourceId)));
maContainer[nResourceId] = aResult;
}
else
aResult = iImage->second;
return aResult;
}
//===== IconCache =============================================================
//static
IconCache& IconCache::Instance (void)
{
if (Implementation::mpInstance == NULL)
{
::osl::GetGlobalMutex aMutexFunctor;
::osl::MutexGuard aGuard (aMutexFunctor());
if (Implementation::mpInstance == NULL)
{
IconCache* pCache = new IconCache ();
SdGlobalResourceContainer::Instance().AddResource (
::std::auto_ptr<SdGlobalResource>(pCache));
OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
Implementation::mpInstance = pCache;
}
}
else
{
OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
}
DBG_ASSERT(Implementation::mpInstance!=NULL,
"IconCache::Instance(): instance is NULL");
return *Implementation::mpInstance;
}
Image IconCache::GetIcon (USHORT nResourceId)
{
return mpImpl->GetIcon (nResourceId);
}
IconCache::IconCache (void)
: mpImpl (new Implementation())
{
}
IconCache::~IconCache (void)
{
// empty
}
} // end of namespace sd
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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