qskinny/src/nodes/QskTickmarksMetrics.h

/******************************************************************************
 * QSkinny - Copyright (C) 2016 Uwe Rathmann
 *           SPDX-License-Identifier: BSD-3-Clause
 *****************************************************************************/

#ifndef QSK_TICKMARKS_METRICS_H
#define QSK_TICKMARKS_METRICS_H

#include "QskFunctions.h"

#include <qmetatype.h>

class QSK_EXPORT QskTickmarksMetrics
{
    Q_GADGET
    Q_PROPERTY( qreal majorRatio READ majorRatio WRITE setMajorRatio)
    Q_PROPERTY( qreal mediumRatio READ mediumRatio WRITE setMediumRatio)
    Q_PROPERTY( qreal minorRatio READ minorRatio WRITE setMinorRatio)

  public:
    constexpr QskTickmarksMetrics() noexcept = default;
    constexpr QskTickmarksMetrics( qreal minorRatio, qreal mediumRatio, qreal majorRatio ) noexcept;
    constexpr QskTickmarksMetrics(const QskTickmarksMetrics&) noexcept = default;
    constexpr QskTickmarksMetrics( QskTickmarksMetrics&& ) noexcept = default;

    constexpr QskTickmarksMetrics& operator=(const QskTickmarksMetrics&) noexcept = default;
    constexpr QskTickmarksMetrics& operator=(QskTickmarksMetrics&&) noexcept = default;

    constexpr Q_REQUIRED_RESULT bool operator==(const QskTickmarksMetrics& rhs) const noexcept;
    constexpr Q_REQUIRED_RESULT bool operator!=(const QskTickmarksMetrics& rhs) const noexcept;

    constexpr Q_REQUIRED_RESULT qreal majorRatio() const noexcept;
    constexpr Q_REQUIRED_RESULT qreal mediumRatio() const noexcept;    
    constexpr Q_REQUIRED_RESULT qreal minorRatio() const noexcept;

    constexpr void setMajorRatio( qreal ratio ) noexcept;
    constexpr void setMediumRatio( qreal ratio ) noexcept;
    constexpr void setMinorRatio( qreal ratio ) noexcept;    

    constexpr Q_REQUIRED_RESULT qreal operator[](int index) const noexcept;
    constexpr Q_REQUIRED_RESULT qreal& operator[](int index) noexcept;

  private:
    union
    {
        struct 
        {
            qreal m_minorRatio;
            qreal m_mediumRatio;
            qreal m_majorRatio;
        };
        qreal size[3] = { 0.7, 0.85, 1.0 };
    };
};

inline constexpr QskTickmarksMetrics::QskTickmarksMetrics(qreal minorRatio, qreal mediumRatio, qreal majorRatio) noexcept
    : m_minorRatio(minorRatio), m_mediumRatio(mediumRatio), m_majorRatio(majorRatio)
{
}

inline constexpr qreal QskTickmarksMetrics::majorRatio() const noexcept
{
    return m_majorRatio;
}

inline constexpr qreal QskTickmarksMetrics::mediumRatio() const noexcept
{
    return m_mediumRatio;
} 
    
inline constexpr qreal QskTickmarksMetrics::minorRatio() const noexcept
{
    return m_minorRatio;
}

inline constexpr void QskTickmarksMetrics::setMajorRatio( qreal ratio ) noexcept
{
    m_majorRatio = qBound( 0.0, ratio, 1.0 );
}

inline constexpr void QskTickmarksMetrics::setMediumRatio( qreal ratio ) noexcept
{
    m_mediumRatio = qBound( 0.0, ratio, 1.0 );
}

inline constexpr void QskTickmarksMetrics::setMinorRatio( qreal ratio ) noexcept
{
    m_minorRatio = qBound( 0.0, ratio, 1.0 );
}

inline constexpr bool QskTickmarksMetrics::operator==(const QskTickmarksMetrics& rhs) const noexcept
{
    return qskFuzzyCompare(m_minorRatio, rhs.m_minorRatio) &&
           qskFuzzyCompare(m_mediumRatio, rhs.m_mediumRatio) &&
           qskFuzzyCompare(m_majorRatio, rhs.m_majorRatio);
}

inline constexpr bool QskTickmarksMetrics::operator!=(const QskTickmarksMetrics& rhs) const noexcept
{
    return !(*this == rhs);
}

inline constexpr qreal QskTickmarksMetrics::operator[](int index) const noexcept
{
    return size[index % 3];
}

inline constexpr qreal& QskTickmarksMetrics::operator[](int index) noexcept
{
    return size[index % 3];
}

#endif