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//=========================================================
// MusE
// Linux Music Editor
// $Id: pos.h,v 1.8 2004/07/14 15:27:26 wschweer Exp $
//
// (C) Copyright 2000 Werner Schweer (ws@seh.de)
//=========================================================
#ifndef __POS_H__
#define __POS_H__
class Xml;
class QString;
//---------------------------------------------------------
// Pos
// depending on type _tick or _frame is a cached
// value. When the tempomap changes, all cached values
// are invalid. Sn is used to check for tempomap
// changes.
//---------------------------------------------------------
class Pos {
public:
enum TType { TICKS, FRAMES };
private:
TType _type;
mutable int sn;
mutable unsigned _tick;
mutable unsigned _frame;
public:
Pos();
Pos(const Pos&);
Pos(int,int,int);
Pos(int,int,int,int);
Pos(unsigned, bool ticks=true);
Pos(const QString&);
void dump(int n = 0) const;
void mbt(int*, int*, int*) const;
void msf(int*, int*, int*, int*) const;
void invalidSn() { sn = -1; }
TType type() const { return _type; }
void setType(TType t);
Pos& operator+=(Pos a);
Pos& operator+=(int a);
bool operator>=(const Pos& s) const;
bool operator>(const Pos& s) const;
bool operator<(const Pos& s) const;
bool operator<=(const Pos& s) const;
bool operator==(const Pos& s) const;
friend Pos operator+(Pos a, Pos b);
friend Pos operator+(Pos a, int b);
unsigned tick() const;
unsigned frame() const;
void setTick(unsigned);
void setFrame(unsigned);
void write(int level, Xml&, const char*) const;
void read(Xml& xml, const char*);
bool isValid() const { return true; }
static bool isValid(int m, int b, int t);
static bool isValid(int, int, int, int);
};
//---------------------------------------------------------
// PosLen
//---------------------------------------------------------
class PosLen : public Pos {
mutable unsigned _lenTick;
mutable unsigned _lenFrame;
mutable int sn;
public:
PosLen();
PosLen(const PosLen&);
void dump(int n = 0) const;
void write(int level, Xml&, const char*) const;
void read(Xml& xml, const char*);
void setLenTick(unsigned);
void setLenFrame(unsigned);
unsigned lenTick() const;
unsigned lenFrame() const;
Pos end() const;
unsigned endTick() const { return end().tick(); }
unsigned endFrame() const { return end().frame(); }
void setPos(const Pos&);
};
#endif
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