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#include "qsize.h"

#include "qdatastream.h"

#include "qdebug.h"

QT_BEGIN_NAMESPACE

/*!

    \class QSize

    \ingroup painting

    \brief The QSize class defines the size of a two-dimensional

    object using integer point precision.

    A size is specified by a width() and a height().  It can be set in

    the constructor and changed using the setWidth(), setHeight(), or

    scale() functions, or using arithmetic operators. A size can also

    be manipulated directly by retrieving references to the width and

    height using the rwidth() and rheight() functions. Finally, the

    width and height can be swapped using the transpose() function.

    The isValid() function determines if a size is valid (a valid size

    has both width and height greater than zero). The isEmpty()

    function returns true if either of the width and height is less

    than, or equal to, zero, while the isNull() function returns true

    only if both the width and the height is zero.

    Use the expandedTo() function to retrieve a size which holds the

    maximum height and width of \e this size and a given

    size. Similarly, the boundedTo() function returns a size which

    holds the minimum height and width of \e this size and a given

    size.

    QSize objects can be streamed as well as compared.

    \sa QSizeF, QPoint, QRect

*/

/*****************************************************************************

  QSize member functions

 *****************************************************************************/

/*!

    \fn QSize::QSize()

    Constructs a size with an invalid width and height (i.e., isValid()

    returns false).

    \sa isValid()

*/

/*!

    \fn QSize::QSize(int width, int height)

    Constructs a size with the given \a width and \a height.

    \sa setWidth(), setHeight()

*/

/*!

    \fn bool QSize::isNull() const

    Returns true if both the width and height is 0; otherwise returns

    false.

    \sa isValid(), isEmpty()

*/

/*!

    \fn bool QSize::isEmpty() const

    Returns true if either of the width and height is less than or

    equal to 0; otherwise returns false.

    \sa isNull(), isValid()

*/

/*!

    \fn bool QSize::isValid() const

    Returns true if both the width and height is equal to or greater

    than 0; otherwise returns false.

    \sa isNull(), isEmpty()

*/

/*!

    \fn int QSize::width() const

    Returns the width.

    \sa height(), setWidth()

*/

/*!

    \fn int QSize::height() const

    Returns the height.

    \sa width(), setHeight()

*/

/*!

    \fn void QSize::setWidth(int width)

    Sets the width to the given \a width.

    \sa rwidth(), width(), setHeight()

*/

/*!

    \fn void QSize::setHeight(int height)

    Sets the height to the given \a height.

    \sa rheight(), height(), setWidth()

*/

/*!

    Swaps the width and height values.

    \sa setWidth(), setHeight()

*/

void QSize::transpose()

{

    int tmp = wd;

    wd = ht;

    ht = tmp;

}

/*!

  \fn void QSize::scale(int width, int height, Qt::AspectRatioMode mode)

    Scales the size to a rectangle with the given \a width and \a

    height, according to the specified \a mode:

    \list

    \i If \a mode is Qt::IgnoreAspectRatio, the size is set to (\a width, \a height).

    \i If \a mode is Qt::KeepAspectRatio, the current size is scaled to a rectangle

       as large as possible inside (\a width, \a height), preserving the aspect ratio.

    \i If \a mode is Qt::KeepAspectRatioByExpanding, the current size is scaled to a rectangle

       as small as possible outside (\a width, \a height), preserving the aspect ratio.

    \endlist

    Example:

    \snippet doc/src/snippets/code/src_corelib_tools_qsize.cpp 0

    \sa setWidth(), setHeight()

*/

/*!

    \fn void QSize::scale(const QSize &size, Qt::AspectRatioMode mode)

    \overload

    Scales the size to a rectangle with the given \a size, according to

    the specified \a mode.

*/

void QSize::scale(const QSize &s, Qt::AspectRatioMode mode)

{

    if (mode == Qt::IgnoreAspectRatio || wd == 0 || ht == 0) {

        wd = s.wd;

        ht = s.ht;

    } else {

        bool useHeight;

        qint64 rw = qint64(s.ht) * qint64(wd) / qint64(ht);

        if (mode == Qt::KeepAspectRatio) {

            useHeight = (rw <= s.wd);

        } else { // mode == Qt::KeepAspectRatioByExpanding

            useHeight = (rw >= s.wd);

        }

        if (useHeight) {

            wd = rw;

            ht = s.ht;

        } else {

            ht = qint32(qint64(s.wd) * qint64(ht) / qint64(wd));

            wd = s.wd;

        }

    }

}

/*!

    \fn int &QSize::rwidth()

    Returns a reference to the width.

    Using a reference makes it possible to manipulate the width

    directly. For example:

    \snippet doc/src/snippets/code/src_corelib_tools_qsize.cpp 1

    \sa rheight(), setWidth()

*/

/*!

    \fn int &QSize::rheight()

    Returns a reference to the height.

    Using a reference makes it possible to manipulate the height

    directly. For example:

    \snippet doc/src/snippets/code/src_corelib_tools_qsize.cpp 2

    \sa rwidth(), setHeight()

*/

/*!

    \fn QSize &QSize::operator+=(const QSize &size)

    Adds the given \a size to \e this size, and returns a reference to

    this size. For example:

    \snippet doc/src/snippets/code/src_corelib_tools_qsize.cpp 3

*/

/*!

    \fn QSize &QSize::operator-=(const QSize &size)

    Subtracts the given \a size from \e this size, and returns a

    reference to this size. For example:

    \snippet doc/src/snippets/code/src_corelib_tools_qsize.cpp 4

*/

/*!

    \fn QSize &QSize::operator*=(qreal factor)

    \overload

    Multiplies both the width and height by the given \a factor, and

    returns a reference to the size.

    Note that the result is rounded to the nearest integer.

    \sa scale()

*/

/*!

    \fn bool operator==(const QSize &s1, const QSize &s2)

    \relates QSize

    Returns true if \a s1 and \a s2 are equal; otherwise returns false.

*/

/*!

    \fn bool operator!=(const QSize &s1, const QSize &s2)

    \relates QSize

    Returns true if \a s1 and \a s2 are different; otherwise returns false.

*/

/*!

    \fn const QSize operator+(const QSize &s1, const QSize &s2)

    \relates QSize

    Returns the sum of \a s1 and \a s2; each component is added separately.

*/

/*!

    \fn const QSize operator-(const QSize &s1, const QSize &s2)

    \relates QSize

    Returns \a s2 subtracted from \a s1; each component is subtracted

    separately.

*/

/*!

    \fn const QSize operator*(const QSize &size, qreal factor)

    \relates QSize

    Multiplies the given \a size by the given \a factor, and returns

    the result rounded to the nearest integer.

    \sa QSize::scale()

*/

/*!

    \fn const QSize operator*(qreal factor, const QSize &size)

    \overload

    \relates QSize

    Multiplies the given \a size by the given \a factor, and returns

    the result rounded to the nearest integer.

*/

/*!

    \fn QSize &QSize::operator/=(qreal divisor)

    \overload

    Divides both the width and height by the given \a divisor, and

    returns a reference to the size.

    Note that the result is rounded to the nearest integer.

    \sa QSize::scale()

*/

/*!

    \fn const QSize operator/(const QSize &size, qreal divisor)

    \relates QSize

    \overload

    Divides the given \a size by the given \a divisor, and returns the

    result rounded to the nearest integer.

    \sa QSize::scale()

*/

/*!

    \fn QSize QSize::expandedTo(const QSize & otherSize) const

    Returns a size holding the maximum width and height of this size

    and the given \a otherSize.

    \sa boundedTo(), scale()

*/

/*!

    \fn QSize QSize::boundedTo(const QSize & otherSize) const

    Returns a size holding the minimum width and height of this size

    and the given \a otherSize.

    \sa expandedTo(), scale()

*/

/*****************************************************************************

  QSize stream functions

 *****************************************************************************/

#ifndef QT_NO_DATASTREAM

/*!

    \fn QDataStream &operator<<(QDataStream &stream, const QSize &size)

    \relates QSize

    Writes the given \a size to the given \a stream, and returns a

    reference to the stream.

    \sa {Format of the QDataStream Operators}

*/

QDataStream &operator<<(QDataStream &s, const QSize &sz)

{

    if (s.version() == 1)

        s << (qint16)sz.width() << (qint16)sz.height();

    else

        s << (qint32)sz.width() << (qint32)sz.height();

    return s;

}

/*!

    \fn QDataStream &operator>>(QDataStream &stream, QSize &size)

    \relates QSize

    Reads a size from the given \a stream into the given \a size, and

    returns a reference to the stream.

    \sa {Format of the QDataStream Operators}

*/

QDataStream &operator>>(QDataStream &s, QSize &sz)

{

    if (s.version() == 1) {

        qint16 w, h;

        s >> w;  sz.rwidth() = w;

        s >> h;  sz.rheight() = h;

    }

    else {

        qint32 w, h;

        s >> w;  sz.rwidth() = w;

        s >> h;  sz.rheight() = h;

    }

    return s;

}

#endif // QT_NO_DATASTREAM

#ifndef QT_NO_DEBUG_STREAM

QDebug operator<<(QDebug dbg, const QSize &s) {

    dbg.nospace() << "QSize(" << s.width() << ", " << s.height() << ')';

    return dbg.space();

}

#endif

/*!

    \class QSizeF

    \brief The QSizeF class defines the size of a two-dimensional object

    using floating point precision.

    \ingroup painting

    A size is specified by a width() and a height().  It can be set in

    the constructor and changed using the setWidth(), setHeight(), or

    scale() functions, or using arithmetic operators. A size can also

    be manipulated directly by retrieving references to the width and

    height using the rwidth() and rheight() functions. Finally, the

    width and height can be swapped using the transpose() function.

    The isValid() function determines if a size is valid. A valid size

    has both width and height greater than or equal to zero. The

    isEmpty() function returns true if either of the width and height

    is \e less than (or equal to) zero, while the isNull() function

    returns true only if both the width and the height is zero.

    Use the expandedTo() function to retrieve a size which holds the

    maximum height and width of this size and a given

    size. Similarly, the boundedTo() function returns a size which

    holds the minimum height and width of this size and a given size.

    The QSizeF class also provides the toSize() function returning a

    QSize copy of this size, constructed by rounding the width and

    height to the nearest integers.

    QSizeF objects can be streamed as well as compared.

    \sa QSize, QPointF, QRectF

*/

/*****************************************************************************

  QSizeF member functions

 *****************************************************************************/

/*!

    \fn QSizeF::QSizeF()

    Constructs an invalid size.

    \sa isValid()

*/

/*!

    \fn QSizeF::QSizeF(const QSize &size)

    Constructs a size with floating point accuracy from the given \a

    size.

    \sa toSize()

*/

/*!

    \fn QSizeF::QSizeF(qreal width, qreal height)

    Constructs a size with the given \a width and \a height.

*/

/*!

    \fn bool QSizeF::isNull() const

    Returns true if both the width and height is 0; otherwise returns

    false.

    \sa isValid(), isEmpty()

*/

/*!

    \fn bool QSizeF::isEmpty() const

    Returns true if either of the width and height is less than or

    equal to 0; otherwise returns false.

    \sa isNull(), isValid()

*/

/*!

    \fn bool QSizeF::isValid() const

    Returns true if both the width and height is equal to or greater

    than 0; otherwise returns false.

    \sa isNull(), isEmpty()

*/

/*!

    \fn int QSizeF::width() const

    Returns the width.

    \sa height(), setWidth()

*/

/*!

    \fn int QSizeF::height() const