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tdegraphics/kviewshell/history.h

60 lines
913 B

// -*- C++ -*-
#ifndef history_h
#define history_h
// history.h
//
// (C) 2001 Stefan Kebekus
// Distributed under the GPL
#include <tqobject.h>
#include <tqvaluelist.h>
#define HISTORYLENGTH 10
class HistoryItem
{
public:
HistoryItem(TQ_UINT32, TQ_UINT32);
HistoryItem() {}
bool operator== (const HistoryItem& item) const;
TQ_UINT32 page;
TQ_UINT32 ypos;
};
inline
bool operator!=(const HistoryItem& lhs, const HistoryItem& rhs)
{
return !(lhs == rhs);
}
class History : public TQObject
{
Q_OBJECT
TQ_OBJECT
public:
History();
void add(TQ_UINT32 page, TQ_UINT32 ypos);
void clear();
HistoryItem* forward();
HistoryItem* back();
signals:
void backItem(bool);
void forwardItem(bool);
private:
// List of history items. First item is the oldest.
TQValueList<HistoryItem> historyList;
TQValueList<HistoryItem>::iterator currentItem;
};
#endif