qt-everywhere-src-5.14.1/qtbase/src/corelib/tools/qmargins.cpp

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#include "qmargins.h"
#include "qdatastream.h"

#include <private/qdebug_p.h>

QT_BEGIN_NAMESPACE

/*!
    \class QMargins
    \inmodule QtCore
    \ingroup painting
    \since 4.6

    \brief The QMargins class defines the four margins of a rectangle.

    QMargin defines a set of four margins; left, top, right and bottom,
    that describe the size of the borders surrounding a rectangle.

    The isNull() function returns \c true only if all margins are set to zero.

    QMargin objects can be streamed as well as compared.
*/


/*****************************************************************************
  QMargins member functions
 *****************************************************************************/

/*!
    \fn QMargins::QMargins()

    Constructs a margins object with all margins set to 0.

    \sa isNull()
*/

/*!
    \fn QMargins::QMargins(int left, int top, int right, int bottom)

    Constructs margins with the given \a left, \a top, \a right, \a bottom

    \sa setLeft(), setRight(), setTop(), setBottom()
*/

/*!
    \fn bool QMargins::isNull() const

    Returns \c true if all margins are is 0; otherwise returns
    false.
*/


/*!
    \fn int QMargins::left() const

    Returns the left margin.

    \sa setLeft()
*/

/*!
    \fn int QMargins::top() const

    Returns the top margin.

    \sa setTop()
*/

/*!
    \fn int QMargins::right() const

    Returns the right margin.
*/

/*!
    \fn int QMargins::bottom() const

    Returns the bottom margin.
*/


/*!
    \fn void QMargins::setLeft(int left)

    Sets the left margin to \a left.
*/

/*!
    \fn void QMargins::setTop(int Top)

    Sets the Top margin to \a Top.
*/

/*!
    \fn void QMargins::setRight(int right)

    Sets the right margin to \a right.
*/

/*!
    \fn void QMargins::setBottom(int bottom)

    Sets the bottom margin to \a bottom.
*/

/*!
    \fn bool operator==(const QMargins &m1, const QMargins &m2)
    \relates QMargins

    Returns \c true if \a m1 and \a m2 are equal; otherwise returns \c false.
*/

/*!
    \fn bool operator!=(const QMargins &m1, const QMargins &m2)
    \relates QMargins

    Returns \c true if \a m1 and \a m2 are different; otherwise returns \c false.
*/

/*!
    \fn const QMargins operator+(const QMargins &m1, const QMargins &m2)
    \relates QMargins

    Returns a QMargins object that is the sum of the given margins, \a m1
    and \a m2; each component is added separately.

    \sa QMargins::operator+=(), QMargins::operator-=()

    \since 5.1
*/

/*!
    \fn const QMargins operator-(const QMargins &m1, const QMargins &m2)
    \relates QMargins

    Returns a QMargins object that is formed by subtracting \a m2 from
    \a m1; each component is subtracted separately.

    \sa QMargins::operator+=(), QMargins::operator-=()

    \since 5.1
*/

/*!
    \fn const QMargins operator+(const QMargins &lhs, int rhs)
    \relates QMargins

    Returns a QMargins object that is formed by adding \a rhs to
    \a lhs.

    \sa QMargins::operator+=(), QMargins::operator-=()

    \since 5.3
*/

/*!
    \fn const QMargins operator+(int lhs, const QMargins &rhs)
    \relates QMargins

    Returns a QMargins object that is formed by adding \a lhs to
    \a rhs.

    \sa QMargins::operator+=(), QMargins::operator-=()

    \since 5.3
*/

/*!
    \fn const QMargins operator-(const QMargins &lhs, int rhs)
    \relates QMargins

    Returns a QMargins object that is formed by subtracting \a rhs from
    \a lhs.

    \sa QMargins::operator+=(), QMargins::operator-=()

    \since 5.3
*/

/*!
    \fn const QMargins operator*(const QMargins &margins, int factor)
    \relates QMargins

    Returns a QMargins object that is formed by multiplying each component
    of the given \a margins by \a factor.

    \sa QMargins::operator*=(), QMargins::operator/=()

    \since 5.1
*/

/*!
    \fn const QMargins operator*(int factor, const QMargins &margins)
    \relates QMargins
    \overload

    Returns a QMargins object that is formed by multiplying each component
    of the given \a margins by \a factor.

    \sa QMargins::operator*=(), QMargins::operator/=()

    \since 5.1
*/

/*!
    \fn const QMargins operator*(const QMargins &margins, qreal factor)
    \relates QMargins
    \overload

    Returns a QMargins object that is formed by multiplying each component
    of the given \a margins by \a factor.

    \sa QMargins::operator*=(), QMargins::operator/=()

    \since 5.1
*/

/*!
    \fn const QMargins operator*(qreal factor, const QMargins &margins)
    \relates QMargins
    \overload

    Returns a QMargins object that is formed by multiplying each component
    of the given \a margins by \a factor.

    \sa QMargins::operator*=(), QMargins::operator/=()

    \since 5.1
*/

/*!
    \fn const QMargins operator/(const QMargins &margins, int divisor)
    \relates QMargins

    Returns a QMargins object that is formed by dividing the components of
    the given \a margins by the given \a divisor.

    \sa QMargins::operator*=(), QMargins::operator/=()

    \since 5.1
*/

/*!
    \fn const QMargins operator/(const QMargins &, qreal)
    \relates QMargins
    \overload

    Returns a QMargins object that is formed by dividing the components of
    the given \a margins by the given \a divisor.

    \sa QMargins::operator*=(), QMargins::operator/=()

    \since 5.1
*/

/*!
    \fn QMargins operator+(const QMargins &margins)
    \relates QMargins

    Returns a QMargin object that is formed from all components of \a margins.

    \since 5.3
*/

/*!
    \fn QMargins operator-(const QMargins &margins)
    \relates QMargins

    Returns a QMargin object that is formed by negating all components of \a margins.

    \since 5.1
*/

/*!
    \fn QMargins &QMargins::operator+=(const QMargins &margins)

    Add each component of \a margins to the respective component of this object
    and returns a reference to it.

    \sa operator-=()

    \since 5.1
*/

/*!
    \fn QMargins &QMargins::operator-=(const QMargins &margins)

    Subtract each component of \a margins from the respective component of this object
    and returns a reference to it.

    \sa operator+=()

    \since 5.1
*/

/*!
    \fn QMargins &QMargins::operator+=(int addend)
    \overload

    Adds the \a addend to each component of this object
    and returns a reference to it.

    \sa operator-=()
*/

/*!
    \fn QMargins &QMargins::operator-=(int subtrahend)
    \overload

    Subtracts the \a subtrahend from each component of this object
    and returns a reference to it.

    \sa operator+=()
*/

/*!
    \fn QMargins &QMargins::operator*=(int factor)

    Multiplies each component of this object by \a factor
    and returns a reference to it.

    \sa operator/=()

    \since 5.1
*/

/*!
    \fn QMargins &QMargins::operator*=(qreal factor)
    \overload

    Multiplies each component of this object by \a factor
    and returns a reference to it.

    \sa operator/=()

    \since 5.1
*/

/*!
    \fn QMargins &QMargins::operator/=(int divisor)

    Divides each component of this object by \a divisor
    and returns a reference to it.

    \sa operator*=()

    \since 5.1
*/

/*!
    \fn QMargins &QMargins::operator/=(qreal divisor)

    \overload

    \sa operator*=()

    \since 5.1
*/

/*****************************************************************************
  QMargins stream functions
 *****************************************************************************/
#ifndef QT_NO_DATASTREAM
/*!
    \fn QDataStream &operator<<(QDataStream &stream, const QMargins &m)
    \relates QMargins

    Writes margin \a m to the given \a stream and returns a
    reference to the stream.

    \sa {Serializing Qt Data Types}
*/

QDataStream &operator<<(QDataStream &s, const QMargins &m)
{
    s << m.left() << m.top() << m.right() << m.bottom();
    return s;
}

/*!
    \fn QDataStream &operator>>(QDataStream &stream, QMargins &m)
    \relates QMargins

    Reads a margin from the given \a stream into margin \a m
    and returns a reference to the stream.

    \sa {Serializing Qt Data Types}
*/

QDataStream &operator>>(QDataStream &s, QMargins &m)
{
    int left, top, right, bottom;
    s >> left; m.setLeft(left);
    s >> top; m.setTop(top);
    s >> right; m.setRight(right);
    s >> bottom; m.setBottom(bottom);
    return s;
}
#endif // QT_NO_DATASTREAM

#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug dbg, const QMargins &m)
{
    QDebugStateSaver saver(dbg);
    dbg.nospace();
    dbg << "QMargins" << '(';
    QtDebugUtils::formatQMargins(dbg, m);
    dbg << ')';
    return dbg;
}
#endif

/*!
    \class QMarginsF
    \inmodule QtCore
    \ingroup painting
    \since 5.3

    \brief The QMarginsF class defines the four margins of a rectangle.

    QMarginsF defines a set of four margins; left, top, right and bottom,
    that describe the size of the borders surrounding a rectangle.

    The isNull() function returns \c true only if all margins are set to zero.

    QMarginsF objects can be streamed as well as compared.
*/


/*****************************************************************************
  QMarginsF member functions
 *****************************************************************************/

/*!
    \fn QMarginsF::QMarginsF()

    Constructs a margins object with all margins set to 0.

    \sa isNull()
*/

/*!
    \fn QMarginsF::QMarginsF(qreal left, qreal top, qreal right, qreal bottom)

    Constructs margins with the given \a left, \a top, \a right, \a bottom

    \sa setLeft(), setRight(), setTop(), setBottom()
*/

/*!
    \fn QMarginsF::QMarginsF(const QMargins &margins)

    Constructs margins copied from the given \a margins
*/

/*!
    \fn bool QMarginsF::isNull() const

    Returns \c true if all margins are 0; otherwise returns
    false.
*/


/*!
    \fn qreal QMarginsF::left() const

    Returns the left margin.

    \sa setLeft()
*/

/*!
    \fn qreal QMarginsF::top() const

    Returns the top margin.

    \sa setTop()
*/

/*!
    \fn qreal QMarginsF::right() const

    Returns the right margin.
*/

/*!
    \fn qreal QMarginsF::bottom() const

    Returns the bottom margin.
*/


/*!
    \fn void QMarginsF::setLeft(qreal left)

    Sets the left margin to \a left.
*/

/*!
    \fn void QMarginsF::setTop(qreal Top)

    Sets the Top margin to \a Top.
*/

/*!
    \fn void QMarginsF::setRight(qreal right)

    Sets the right margin to \a right.
*/

/*!
    \fn void QMarginsF::setBottom(qreal bottom)

    Sets the bottom margin to \a bottom.
*/

/*!
    \fn bool operator==(const QMarginsF &lhs, const QMarginsF &rhs)
    \relates QMarginsF

    Returns \c true if \a lhs and \a rhs are equal; otherwise returns \c false.
*/

/*!
    \fn bool operator!=(const QMarginsF &lhs, const QMarginsF &rhs)
    \relates QMarginsF

    Returns \c true if \a lhs and \a rhs are different; otherwise returns \c false.
*/

/*!
    \fn const QMarginsF operator+(const QMarginsF &lhs, const QMarginsF &rhs)
    \relates QMarginsF

    Returns a QMarginsF object that is the sum of the given margins, \a lhs
    and \a rhs; each component is added separately.

    \sa QMarginsF::operator+=(), QMarginsF::operator-=()
*/

/*!
    \fn const QMarginsF operator-(const QMarginsF &lhs, const QMarginsF &rhs)
    \relates QMarginsF

    Returns a QMarginsF object that is formed by subtracting \a rhs from
    \a lhs; each component is subtracted separately.

    \sa QMarginsF::operator+=(), QMarginsF::operator-=()
*/

/*!
    \fn const QMarginsF operator+(const QMarginsF &lhs, qreal rhs)
    \relates QMarginsF

    Returns a QMarginsF object that is formed by adding \a rhs to
    \a lhs.

    \sa QMarginsF::operator+=(), QMarginsF::operator-=()
*/

/*!
    \fn const QMarginsF operator+(qreal lhs, const QMarginsF &rhs)
    \relates QMarginsF

    Returns a QMarginsF object that is formed by adding \a lhs to
    \a rhs.

    \sa QMarginsF::operator+=(), QMarginsF::operator-=()
*/

/*!
    \fn const QMarginsF operator-(const QMarginsF &lhs, qreal rhs)
    \relates QMarginsF

    Returns a QMarginsF object that is formed by subtracting \a rhs from
    \a lhs.

    \sa QMarginsF::operator+=(), QMarginsF::operator-=()
*/

/*!
    \fn const QMarginsF operator*(const QMarginsF &lhs, qreal rhs)
    \relates QMarginsF
    \overload

    Returns a QMarginsF object that is formed by multiplying each component
    of the given \a lhs margins by \a rhs factor.

    \sa QMarginsF::operator*=(), QMarginsF::operator/=()
*/

/*!
    \fn const QMarginsF operator*(qreal lhs, const QMarginsF &rhs)
    \relates QMarginsF
    \overload

    Returns a QMarginsF object that is formed by multiplying each component
    of the given \a lhs margins by \a rhs factor.

    \sa QMarginsF::operator*=(), QMarginsF::operator/=()
*/

/*!
    \fn const QMarginsF operator/(const QMarginsF &lhs, qreal rhs)
    \relates QMarginsF
    \overload

    Returns a QMarginsF object that is formed by dividing the components of
    the given \a lhs margins by the given \a rhs divisor.

    \sa QMarginsF::operator*=(), QMarginsF::operator/=()
*/

/*!
    \fn QMarginsF operator+(const QMarginsF &margins)
    \relates QMarginsF

    Returns a QMargin object that is formed from all components of \a margins.
*/

/*!
    \fn QMarginsF operator-(const QMarginsF &margins)
    \relates QMarginsF

    Returns a QMargin object that is formed by negating all components of \a margins.
*/

/*!
    \fn QMarginsF &QMarginsF::operator+=(const QMarginsF &margins)

    Add each component of \a margins to the respective component of this object
    and returns a reference to it.

    \sa operator-=()
*/

/*!
    \fn QMarginsF &QMarginsF::operator-=(const QMarginsF &margins)

    Subtract each component of \a margins from the respective component of this object
    and returns a reference to it.

    \sa operator+=()
*/

/*!
    \fn QMarginsF &QMarginsF::operator+=(qreal addend)
    \overload

    Adds the \a addend to each component of this object
    and returns a reference to it.

    \sa operator-=()
*/

/*!
    \fn QMarginsF &QMarginsF::operator-=(qreal subtrahend)
    \overload

    Subtracts the \a subtrahend from each component of this object
    and returns a reference to it.

    \sa operator+=()
*/

/*!
    \fn QMarginsF &QMarginsF::operator*=(qreal factor)

    Multiplies each component of this object by \a factor
    and returns a reference to it.

    \sa operator/=()
*/

/*!
    \fn QMarginsF &QMarginsF::operator/=(qreal divisor)

    Divides each component of this object by \a divisor
    and returns a reference to it.

    \sa operator*=()
*/

/*!
    \fn QMargins QMarginsF::toMargins() const

    Returns an integer based copy of this margins object.

    Note that the components in the returned margins will be rounded to
    the nearest integer.

    \sa QMarginsF()
*/

/*****************************************************************************
  QMarginsF stream functions
 *****************************************************************************/
#ifndef QT_NO_DATASTREAM
/*!
    \fn QDataStream &operator<<(QDataStream &stream, const QMarginsF &m)
    \relates QMarginsF

    Writes margin \a m to the given \a stream and returns a
    reference to the stream.

    \sa {Serializing Qt Data Types}
*/

QDataStream &operator<<(QDataStream &s, const QMarginsF &m)
{
    s << double(m.left()) << double(m.top()) << double(m.right()) << double(m.bottom());
    return s;
}

/*!
    \fn QDataStream &operator>>(QDataStream &stream, QMarginsF &m)
    \relates QMarginsF

    Reads a margin from the given \a stream into margin \a m
    and returns a reference to the stream.

    \sa {Serializing Qt Data Types}
*/

QDataStream &operator>>(QDataStream &s, QMarginsF &m)
{
    double left, top, right, bottom;
    s >> left;
    s >> top;
    s >> right;
    s >> bottom;
    m = QMarginsF(qreal(left), qreal(top), qreal(right), qreal(bottom));
    return s;
}
#endif // QT_NO_DATASTREAM

#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug dbg, const QMarginsF &m)
{
    QDebugStateSaver saver(dbg);
    dbg.nospace();
    dbg << "QMarginsF" << '(';
    QtDebugUtils::formatQMargins(dbg, m);
    dbg << ')';
    return dbg;
}
#endif

QT_END_NAMESPACE