dabstractunitformatter.h

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// SPDX-FileCopyrightText: 2017 - 2022 UnionTech Software Technology Co., Ltd.
//
// SPDX-License-Identifier: LGPL-3.0-or-later
 
#ifndef DABSTRACTUNITFORMATTER_H
#define DABSTRACTUNITFORMATTER_H
 
#include "dtkcore_global.h"
 
#include <QPair>
#include <QList>
 
DCORE_BEGIN_NAMESPACE
 
class LIBDTKCORESHARED_EXPORT DAbstractUnitFormatter
{
public:
    DAbstractUnitFormatter();
    ~DAbstractUnitFormatter();
 
protected:
    virtual int unitMax() const = 0;
    virtual int unitMin() const = 0;
    virtual uint unitConvertRate(int unitId) const = 0;
    virtual qreal unitValueMax(int unitId) const { return unitConvertRate(unitId) - 1; }
    virtual qreal unitValueMin(int unitId) const { Q_UNUSED(unitId); return 1; }
    virtual QString unitStr(int unitId) const = 0;
 
public:
    qreal formatAs(qreal value, int currentUnit, const int targetUnit) const;
    QPair<qreal, int> format(const qreal value, const int unit) const;
    QList<QPair<qreal, int>> formatAsUnitList(const qreal value, int unit) const;
};
 
DCORE_END_NAMESPACE
 
#endif // DABSTRACTUNITFORMATTER_H