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// **************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
// * Copyright (C) 2008-2010 ZenJu (zhnmju123 AT gmx.de) *
// **************************************************************************
//
#ifndef ICONBUFFER_H_INCLUDED
#define ICONBUFFER_H_INCLUDED
#ifndef FFS_WIN
header should be used in the windows build only!
#endif
#include <vector>
#include "../shared/zstring.h"
#include <memory>
#include <boost/shared_ptr.hpp>
class wxCriticalSection;
class wxIcon;
namespace FreeFileSync
{
class IconBuffer
{
public:
static const wxIcon& getDirectoryIcon(); //one folder icon should be sufficient...
static IconBuffer& getInstance();
bool requestFileIcon(const Zstring& fileName, wxIcon* icon = NULL); //returns false if icon is not in buffer
void setWorkload(const std::vector<Zstring>& load); //(re-)set new workload of icons to be retrieved;
static const int ICON_SIZE = 16; //size in pixel
static const size_t BUFFER_SIZE = 800; //maximum number if icons to buffer
private:
IconBuffer();
~IconBuffer();
class WorkerThread;
friend class WorkerThread;
class IconDB;
class IconHolder;
class IconDbSequence;
typedef boost::shared_ptr<IconHolder> CountedIconPtr;
//methods used by worker thread
void insertIntoBuffer(const DefaultChar* entryName, IconHolder& icon); //icon is invalidated by this call!!
//---------------------- Shared Data -------------------------
std::auto_ptr<wxCriticalSection> lockIconDB;
std::auto_ptr<IconDB> buffer; //use synchronisation when accessing this!
std::auto_ptr<IconDbSequence> bufSequence; //save sequence of buffer entry to delete oldest elements (implicitly shared by sharing Zstring with IconDB!!!)
//------------------------------------------------------------
std::auto_ptr<WorkerThread> worker;
};
}
#endif // ICONBUFFER_H_INCLUDED
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