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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: IconCache.cxx,v $
*
* $Revision: 1.4 $
*
* last change: $Author: obo $ $Date: 2006-09-16 19:21:41 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sd.hxx"
#include "tools/IconCache.hxx"
#include "sdresid.hxx"
#include <hash_map>
#ifndef INCLUDED_OSL_DOUBLECHECKEDLOCKING_H
#include <osl/doublecheckedlocking.h>
#endif
#ifndef INCLUDED_OSL_GETGLOBALMUTEX_HXX
#include <osl/getglobalmutex.hxx>
#endif
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
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