SlsQueueProcessor.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * 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
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#pragma once
 
#include <cache/SlsCacheContext.hxx>
#include "SlsRequestPriorityClass.hxx"
#include "SlsBitmapFactory.hxx"
 
#include <vcl/timer.hxx>
#include <mutex>
 
namespace sd::slidesorter::cache {
 
class BitmapCache;
class RequestQueue;
 
class QueueProcessor final
{
public:
    QueueProcessor (
        RequestQueue& rQueue,
        std::shared_ptr<BitmapCache> pCache,
        const Size& rPreviewSize,
        const bool bDoSuperSampling,
        SharedCacheContext pCacheContext);
    ~QueueProcessor();
 
    void Start (int nPriorityClass);
    void Stop();
    void Pause();
    void Resume();
 
    void SetPreviewSize (
        const Size& rSize,
        const bool bDoSuperSampling);
 
    void SetBitmapCache (const std::shared_ptr<BitmapCache>& rpCache);
 
private:
    std::mutex maMutex;
 
    Timer  maTimer;
    DECL_LINK(ProcessRequestHdl, Timer *, void);
    Size maPreviewSize;
    bool mbDoSuperSampling;
    SharedCacheContext mpCacheContext;
    RequestQueue& mrQueue;
    std::shared_ptr<BitmapCache> mpCache;
    BitmapFactory maBitmapFactory;
    bool mbIsPaused;
 
    void ProcessRequests();
    void ProcessOneRequest (
        CacheKey aKey,
        const RequestPriorityClass ePriorityClass);
};
 
} // end of namespace ::sd::slidesorter::cache
 
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