qskinny/src/common/QskBoxShapeMetrics.h

/******************************************************************************
 * QSkinny - Copyright (C) 2016 Uwe Rathmann
 * This file may be used under the terms of the QSkinny License, Version 1.0
 *****************************************************************************/

#ifndef QSK_BOX_SHAPE_METRICS_H
#define QSK_BOX_SHAPE_METRICS_H

#include "QskGlobal.h"

#include <qmetatype.h>
#include <qnamespace.h>
#include <qsize.h>

class QVariant;

class QSK_EXPORT QskBoxShapeMetrics
{
  public:
    constexpr QskBoxShapeMetrics() noexcept;

    constexpr QskBoxShapeMetrics( qreal topLeft, qreal topRight,
        qreal bottomLeft, qreal bottomRight, Qt::SizeMode = Qt::AbsoluteSize ) noexcept;

    constexpr QskBoxShapeMetrics(
        qreal radius, Qt::SizeMode = Qt::AbsoluteSize ) noexcept;

    constexpr QskBoxShapeMetrics( qreal radiusX, qreal radiusY,
        Qt::SizeMode = Qt::AbsoluteSize ) noexcept;

    constexpr bool operator==( const QskBoxShapeMetrics& ) const noexcept;
    constexpr bool operator!=( const QskBoxShapeMetrics& ) const noexcept;

    void setRadius( qreal radius ) noexcept;
    void setRadius( qreal radius, Qt::SizeMode ) noexcept;
    void setRadius( Qt::Corner, qreal radius ) noexcept;

    void setRadius( qreal radiusX, qreal radiusY ) noexcept;
    void setRadius( const QSizeF& ) noexcept;
    void setRadius( Qt::Corner, qreal radiusX, qreal radiusY ) noexcept;
    void setRadius( Qt::Corner, const QSizeF& radius ) noexcept;

    void setRadius( qreal topLeft, qreal topRight,
        qreal bottomLeft, qreal bottomRight ) noexcept;

    void setRadius( const QSizeF& topLeft, const QSizeF& topRight,
        const QSizeF& bottomLeft, const QSizeF& bottomRight ) noexcept;

    void setRadius(
        qreal topLeftX, qreal topLeftY,
        qreal topRightX, qreal topRightY,
        qreal bottomLeftX, qreal bottomLeftY,
        qreal bottomRightX, qreal bottomRightY ) noexcept;

    constexpr QSizeF radius( Qt::Corner ) const noexcept;

    constexpr bool isRectangle() const noexcept;
    constexpr bool isRectellipse() const noexcept;

    void setSizeMode( Qt::SizeMode ) noexcept;
    constexpr Qt::SizeMode sizeMode() const noexcept;

    void setAspectRatioMode( Qt::AspectRatioMode ) noexcept;
    constexpr Qt::AspectRatioMode aspectRatioMode() const noexcept;

    QskBoxShapeMetrics interpolated(
        const QskBoxShapeMetrics&, qreal value ) const noexcept;

    QskBoxShapeMetrics toAbsolute( const QSizeF& ) const noexcept;

    constexpr QskBoxShapeMetrics transposed() const noexcept;

    uint hash( uint seed = 0 ) const noexcept;

    static QVariant interpolate( const QskBoxShapeMetrics&,
        const QskBoxShapeMetrics&, qreal progress ) noexcept;

  private:
    inline constexpr QskBoxShapeMetrics(
            const QSizeF& topLeft, const QSizeF& topRight,
            const QSizeF& bottomLeft, const QSizeF& bottomRight,
            Qt::SizeMode sizeMode, Qt::AspectRatioMode aspectRatioMode ) noexcept
        : m_radii{ topLeft, topRight, bottomLeft, bottomRight }
        , m_sizeMode( sizeMode )
        , m_aspectRatioMode( aspectRatioMode )
    {
    }

    QSizeF m_radii[ 4 ];
    Qt::SizeMode m_sizeMode : 2;
    Qt::AspectRatioMode m_aspectRatioMode : 2;
};

inline constexpr QskBoxShapeMetrics::QskBoxShapeMetrics() noexcept
    : m_radii{ { 0.0, 0.0 }, { 0.0, 0.0 }, { 0.0, 0.0 }, { 0.0, 0.0 } }
    , m_sizeMode( Qt::AbsoluteSize )
    , m_aspectRatioMode( Qt::KeepAspectRatio )
{
}

inline constexpr QskBoxShapeMetrics::QskBoxShapeMetrics(
        qreal radius, Qt::SizeMode sizeMode ) noexcept
    : QskBoxShapeMetrics( radius, radius, sizeMode )
{
}

inline constexpr QskBoxShapeMetrics::QskBoxShapeMetrics(
        qreal radiusX, qreal radiusY, Qt::SizeMode sizeMode ) noexcept
    : m_radii{ { radiusX, radiusY }, { radiusX, radiusY },
        { radiusX, radiusY }, { radiusX, radiusY } }
    , m_sizeMode( sizeMode )
    , m_aspectRatioMode( Qt::KeepAspectRatio )
{
}

inline constexpr QskBoxShapeMetrics::QskBoxShapeMetrics( qreal topLeft, qreal topRight,
        qreal bottomLeft, qreal bottomRight, Qt::SizeMode sizeMode ) noexcept
    : m_radii{ { topLeft, topLeft }, { topRight, topRight },
        { bottomLeft, bottomLeft }, { bottomRight, bottomRight } }
    , m_sizeMode( sizeMode )
    , m_aspectRatioMode( Qt::KeepAspectRatio )
{
}

inline constexpr bool QskBoxShapeMetrics::operator==(
    const QskBoxShapeMetrics& other ) const noexcept
{
    return ( m_sizeMode == other.m_sizeMode )
        && ( m_aspectRatioMode == other.m_aspectRatioMode )
        && ( m_radii[ 0 ] == other.m_radii[ 0 ] )
        && ( m_radii[ 1 ] == other.m_radii[ 1 ] )
        && ( m_radii[ 2 ] == other.m_radii[ 2 ] )
        && ( m_radii[ 3 ] == other.m_radii[ 3 ] );
}

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

inline void QskBoxShapeMetrics::setRadius( qreal radius ) noexcept
{
    setRadius( radius, radius );
}

inline void QskBoxShapeMetrics::setRadius( qreal radius, Qt::SizeMode sizeMode ) noexcept
{
    setRadius( radius );
    setSizeMode( sizeMode );
}

inline void QskBoxShapeMetrics::setRadius( qreal radiusX, qreal radiusY ) noexcept
{
    setRadius( radiusX, radiusY, radiusX, radiusY,
        radiusX, radiusY, radiusX, radiusY );
}

inline void QskBoxShapeMetrics::setRadius( const QSizeF& radius ) noexcept
{
    setRadius( radius.width(), radius.height() );
}

inline void QskBoxShapeMetrics::setRadius( Qt::Corner corner, qreal radius ) noexcept
{
    setRadius( corner, radius, radius );
}

inline void QskBoxShapeMetrics::setRadius( Qt::Corner corner, const QSizeF& radius ) noexcept
{
    setRadius( corner, radius.width(), radius.height() );
}

inline void QskBoxShapeMetrics::setRadius(
    qreal topLeft, qreal topRight, qreal bottomLeft, qreal bottomRight ) noexcept
{
    setRadius( topLeft, topLeft, topRight, topRight,
        bottomLeft, bottomLeft, bottomRight, bottomRight );
}

inline void QskBoxShapeMetrics::setRadius(
    const QSizeF& topLeft, const QSizeF& topRight,
    const QSizeF& bottomLeft, const QSizeF& bottomRight ) noexcept
{
    setRadius( topLeft.width(), topLeft.height(),
        topRight.width(), topRight.height(),
        bottomLeft.width(), bottomLeft.height(),
        bottomRight.width(), bottomRight.height() );
}

inline constexpr QSizeF QskBoxShapeMetrics::radius( Qt::Corner corner ) const noexcept
{
    return ( ( corner >= 0 ) && ( corner < 4 ) ) ? m_radii[ corner ] : QSizeF();
}

inline void QskBoxShapeMetrics::setSizeMode( Qt::SizeMode sizeMode ) noexcept
{
    m_sizeMode = sizeMode;
}

inline constexpr Qt::SizeMode QskBoxShapeMetrics::sizeMode() const noexcept
{
    return m_sizeMode;
}

inline void QskBoxShapeMetrics::setAspectRatioMode(
    Qt::AspectRatioMode aspectRatioMode ) noexcept
{
    m_aspectRatioMode = aspectRatioMode;
}

inline constexpr Qt::AspectRatioMode QskBoxShapeMetrics::aspectRatioMode() const noexcept
{
    return m_aspectRatioMode;
}

inline constexpr bool QskBoxShapeMetrics::isRectellipse() const noexcept
{
    return ( m_radii[ 1 ] == m_radii[ 0 ] )
        && ( m_radii[ 2 ] == m_radii[ 1 ] )
        && ( m_radii[ 3 ] == m_radii[ 2 ] );
}

inline constexpr bool QskBoxShapeMetrics::isRectangle() const noexcept
{
    return ( ( ( m_radii[ 0 ].width() <= 0.0 ) && ( m_radii[ 0 ].height() <= 0.0 ) )
        && ( ( m_radii[ 1 ].width() <= 0.0 ) && ( m_radii[ 1 ].height() <= 0.0 ) )
        && ( ( m_radii[ 2 ].width() <= 0.0 ) && ( m_radii[ 2 ].height() <= 0.0 ) )
        && ( ( m_radii[ 3 ].width() <= 0.0 ) && ( m_radii[ 3 ].height() <= 0.0 ) ) );
}

inline constexpr QskBoxShapeMetrics QskBoxShapeMetrics::transposed() const noexcept
{
    return QskBoxShapeMetrics(
        m_radii[ 0 ].transposed(), m_radii[ 1 ].transposed(),
        m_radii[ 2 ].transposed(), m_radii[ 3 ].transposed(),
        m_sizeMode, m_aspectRatioMode );
}

#ifndef QT_NO_DEBUG_STREAM

QSK_EXPORT QDebug operator<<( QDebug, const QskBoxShapeMetrics& );

#endif

Q_DECLARE_TYPEINFO( QskBoxShapeMetrics, Q_MOVABLE_TYPE );
Q_DECLARE_METATYPE( QskBoxShapeMetrics )

#endif