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/**************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the 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<sal_uInt16,Image> ImageContainer;
ImageContainer maContainer;
Image GetIcon (sal_uInt16 nResourceId);
};
IconCache* IconCache::Implementation::mpInstance = NULL;
Image IconCache::Implementation::GetIcon (sal_uInt16 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 (sal_uInt16 nResourceId)
{
return mpImpl->GetIcon (nResourceId);
}
IconCache::IconCache (void)
: mpImpl (new Implementation())
{
}
IconCache::~IconCache (void)
{
// empty
}
} // end of namespace sd
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