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//=========================================================
// MusE
// Linux Music Editor
// $Id: drange.h,v 1.1.1.1.2.1 2007/01/27 14:52:43 spamatica Exp $
//
// Copyright (C) 1997 Josef Wilgen
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, version 2,
// as published by the Free Software Foundation.
//
// (C) Copyright 2000 Werner Schweer (ws@seh.de)
//=========================================================
#ifndef __DOUBLE_RANGE_H__
#define __DOUBLE_RANGE_H__
#include <qglobal.h>
//---------------------------------------------------------
// DoubleRange
//---------------------------------------------------------
class DoubleRange
{
static const double MinRelStep;
static const double DefaultRelStep;
static const double MinEps;
double d_minValue;
double d_maxValue;
double d_step;
int d_pageSize;
double d_value;
double d_exactValue;
double d_exactPrevValue;
double d_prevValue;
bool d_periodic;
void setNewValue(double x, bool align = false);
protected:
double exactValue() const { return d_exactValue; }
double exactPrevValue() const { return d_exactPrevValue; }
double prevValue() const { return d_prevValue; }
virtual void valueChange() {}
virtual void stepChange() {}
virtual void rangeChange() {}
public:
DoubleRange();
virtual ~DoubleRange(){};
double value() const { return d_value; }
virtual void setValue(double);
virtual void fitValue(double);
virtual void incValue(int);
virtual void incPages(int);
void setPeriodic(bool tf);
void setRange(double vmin, double vmax, double vstep = 0.0,
int pagesize = 1);
void setStep(double);
double maxValue() const { return d_maxValue; }
double minValue() const { return d_minValue; }
bool periodic() const { return d_periodic; }
int pageSize() const { return d_pageSize; }
double step() const;
};
#endif
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