106 lines
3.1 KiB
C++
106 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <memory>
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#include <tools/IconCache.hxx>
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#include <tools/debug.hxx>
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#include <osl/doublecheckedlocking.h>
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#include <osl/getglobalmutex.hxx>
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#include <unordered_map>
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namespace sd
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{
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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* s_pIconCache;
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typedef std::unordered_map<OUString, Image> ImageContainer;
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ImageContainer maContainer;
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Image GetIcon(const OUString& rResourceId);
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};
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IconCache* IconCache::Implementation::s_pIconCache = nullptr;
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Image IconCache::Implementation::GetIcon(const OUString& rResourceId)
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{
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Image aResult;
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ImageContainer::iterator iImage = maContainer.find(rResourceId);
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if (iImage == maContainer.end())
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{
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aResult = Image(StockImage::Yes, rResourceId);
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maContainer[rResourceId] = 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()
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{
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if (Implementation::s_pIconCache == nullptr)
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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::s_pIconCache == nullptr)
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{
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IconCache* pCache = new IconCache();
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SdGlobalResourceContainer::Instance().AddResource(
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::std::unique_ptr<SdGlobalResource>(pCache));
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OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
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Implementation::s_pIconCache = 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::s_pIconCache != nullptr, "IconCache::Instance(): instance is NULL");
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return *Implementation::s_pIconCache;
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}
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Image IconCache::GetIcon(const OUString& rResourceId) { return mpImpl->GetIcon(rResourceId); }
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IconCache::IconCache()
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: mpImpl(new Implementation)
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{
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}
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IconCache::~IconCache()
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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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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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