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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* 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
* 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 .
*/
#ifndef SD_SLIDESORTER_QUEUE_PROCESSOR_HXX
#define SD_SLIDESORTER_QUEUE_PROCESSOR_HXX
#include "cache/SlsPageCache.hxx"
#include "SlsRequestPriorityClass.hxx"
#include "SlsBitmapFactory.hxx"
#include "view/SlideSorterView.hxx"
#include "tools/IdleDetection.hxx"
#include "SlsBitmapCache.hxx"
#include "sdpage.hxx"
#include "Window.hxx"
#include <svx/svdpagv.hxx>
#include <vcl/svapp.hxx>
#include <vcl/timer.hxx>
#include <boost/function.hpp>
namespace sd { namespace slidesorter { namespace view {
class SlideSorterView;
} } }
namespace sd { namespace slidesorter { namespace cache {
class BitmapCache;
class RequestQueue;
/** This queue processor is timer based, i.e. when an entry is added to the
queue and the processor is started with Start() in the base class a
timer is started that eventually calls ProcessRequest(). This is
repeated until the queue is empty or Stop() is called.
*/
class QueueProcessor
{
public:
typedef ::boost::function<bool()> IdleDetectionCallback;
QueueProcessor (
RequestQueue& rQueue,
const ::boost::shared_ptr<BitmapCache>& rpCache,
const Size& rPreviewSize,
const bool bDoSuperSampling,
const SharedCacheContext& rpCacheContext);
virtual ~QueueProcessor();
/** Start the processor. This implementation is timer based and waits
an defined amount of time that depends on the given argument before
the next entry in the queue is processed.
@param nPriorityClass
A priority class of 0 tells the processor that a high priority
request is waiting in the queue. The time to wait is thus
shorter then that for a low priority request (denoted by a value
of 1.) When the timer is already running it is not modified.
*/
void Start (int nPriorityClass = 0);
void Stop (void);
void Pause (void);
void Resume (void);
void Terminate (void);
void SetPreviewSize (
const Size& rSize,
const bool bDoSuperSampling);
/** Use this method when the page cache is (maybe) using a different
BitmapCache. This is usually necessary after calling
PageCacheManager::ChangeSize().
*/
void SetBitmapCache (const ::boost::shared_ptr<BitmapCache>& rpCache);
private:
/** This mutex is used to guard the queue processor. Be carefull not to
mix its use with that of the solar mutex.
*/
::osl::Mutex maMutex;
Timer maTimer;
DECL_LINK(ProcessRequestHdl, void *);
sal_uInt32 mnTimeBetweenHighPriorityRequests;
sal_uInt32 mnTimeBetweenLowPriorityRequests;
sal_uInt32 mnTimeBetweenRequestsWhenNotIdle;
Size maPreviewSize;
bool mbDoSuperSampling;
SharedCacheContext mpCacheContext;
RequestQueue& mrQueue;
::boost::shared_ptr<BitmapCache> mpCache;
BitmapFactory maBitmapFactory;
bool mbIsPaused;
void ProcessRequests (void);
void ProcessOneRequest (
CacheKey aKey,
const RequestPriorityClass ePriorityClass);
};
} } } // end of namespace ::sd::slidesorter::cache
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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