SlsPageCacheManager.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
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 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
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 *   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
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#pragma once
 
#include <sal/types.h>
#include <com/sun/star/uno/XInterface.hpp>
#include <memory>
#include <vector>
 
class Size;
class SdrPage;
 
namespace sd::slidesorter::cache {
 
class BitmapCache;
 
class PageCacheManager
{
public:
    typedef std::vector< std::pair<Size, std::shared_ptr<BitmapCache> > > BestFittingPageCaches;
    typedef css::uno::Reference<css::uno::XInterface> DocumentKey;
 
    static std::shared_ptr<PageCacheManager> Instance();
 
    std::shared_ptr<BitmapCache> GetCache (
        const  DocumentKey& pDocument,
        const Size& rPreviewSize);
 
    void ReleaseCache (const std::shared_ptr<BitmapCache>& rpCache);
 
    std::shared_ptr<BitmapCache> ChangeSize (
        const std::shared_ptr<BitmapCache>& rpCache,
        const Size& rOldPreviewSize,
        const Size& rNewPreviewSize);
 
    bool InvalidatePreviewBitmap (
        const DocumentKey& pDocument,
        const SdrPage* pPage);
 
    void InvalidateAllPreviewBitmaps (const DocumentKey& pDocument);
 
    void InvalidateAllCaches();
 
    void ReleasePreviewBitmap (const SdrPage* pPage);
 
private:
    static std::weak_ptr<PageCacheManager> mpInstance;
 
    class PageCacheContainer;
    std::unique_ptr<PageCacheContainer> mpPageCaches;
 
    class RecentlyUsedPageCaches;
    std::unique_ptr<RecentlyUsedPageCaches> mpRecentlyUsedPageCaches;
 
    static const sal_uInt32 mnMaximalRecentlyCacheCount = 2;
 
    PageCacheManager();
    ~PageCacheManager();
 
    class Deleter;
    friend class Deleter;
 
    std::shared_ptr<BitmapCache> GetRecentlyUsedCache(
        const DocumentKey& pDocument,
        const Size& rSize);
 
    void PutRecentlyUsedCache(
        DocumentKey const & pDocument,
        const Size& rPreviewSize,
        const std::shared_ptr<BitmapCache>& rpCache);
 
    void Recycle (
        const std::shared_ptr<BitmapCache>& rpCache,
        const DocumentKey& pDocument,
        const Size& rPreviewSize);
};
 
} // end of namespace ::sd::slidesorter::cache
 
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