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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
#include <vector>
#include "../shared/zstring.h"
#include <memory>
#include <wx/icon.h>
#include <boost/thread/mutex.hpp>
namespace ffs3
{
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;
#ifdef FFS_WIN
static const int ICON_SIZE = 16; //size in pixel
#elif defined FFS_LINUX
static const int ICON_SIZE = 24; //size in pixel
#endif
private:
IconBuffer();
~IconBuffer();
static const size_t BUFFER_SIZE = 800; //maximum number of icons to buffer
class IconDB;
class IconHolder;
class IconDbSequence;
//methods used by worker thread
void insertIntoBuffer(const DefaultChar* entryName, const IconHolder& icon);
static IconHolder getAssociatedIcon(const Zstring& filename);
static IconHolder getAssociatedIconByExt(const Zstring& extension);
//---------------------- Shared Data -------------------------
boost::mutex 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!!!)
//------------------------------------------------------------
class WorkerThread;
std::auto_ptr<WorkerThread> worker;
};
}
#endif // ICONBUFFER_H_INCLUDED
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