QMarginsF Class

The QMarginsF class defines the four margins of a rectangle. More...

Header: #include <QMarginsF>
qmake: QT += core
Since: Qt 5.3

This class was introduced in Qt 5.3.

Public Functions

QMarginsF(const QMargins &margins)
QMarginsF(qreal left, qreal top, qreal right, qreal bottom)
QMarginsF()
qreal bottom() const
bool isNull() const
qreal left() const
qreal right() const
void setBottom(qreal bottom)
void setLeft(qreal left)
void setRight(qreal right)
void setTop(qreal Top)
QMargins toMargins() const
qreal top() const
QMarginsF &operator*=(qreal factor)
QMarginsF &operator+=(const QMarginsF &margins)
QMarginsF &operator+=(qreal addend)
QMarginsF &operator-=(const QMarginsF &margins)
QMarginsF &operator-=(qreal subtrahend)
QMarginsF &operator/=(qreal divisor)
bool operator!=(const QMarginsF &lhs, const QMarginsF &rhs)
QMarginsF operator*(const QMarginsF &lhs, qreal rhs)
QMarginsF operator*(qreal lhs, const QMarginsF &rhs)
QMarginsF operator+(const QMarginsF &lhs, const QMarginsF &rhs)
QMarginsF operator+(const QMarginsF &lhs, qreal rhs)
QMarginsF operator+(qreal lhs, const QMarginsF &rhs)
QMarginsF operator+(const QMarginsF &margins)
QMarginsF operator-(const QMarginsF &lhs, const QMarginsF &rhs)
QMarginsF operator-(const QMarginsF &lhs, qreal rhs)
QMarginsF operator-(const QMarginsF &margins)
QMarginsF operator/(const QMarginsF &lhs, qreal rhs)
QDataStream &operator<<(QDataStream &stream, const QMarginsF &m)
bool operator==(const QMarginsF &lhs, const QMarginsF &rhs)
QDataStream &operator>>(QDataStream &stream, QMarginsF &m)

Detailed Description

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 true only if all margins are set to zero.

QMarginsF objects can be streamed as well as compared.

Member Function Documentation

QMarginsF::QMarginsF(const QMargins &margins)

Constructs margins copied from the given margins

QMarginsF::QMarginsF(qreal left, qreal top, qreal right, qreal bottom)

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

See also setLeft(), setRight(), setTop(), and setBottom().

QMarginsF::QMarginsF()

Constructs a margins object with all margins set to 0.

See also isNull().

qreal QMarginsF::bottom() const

Returns the bottom margin.

See also setBottom().

bool QMarginsF::isNull() const

Returns true if all margins are 0; otherwise returns false.

qreal QMarginsF::left() const

Returns the left margin.

See also setLeft().

Returns the right margin.

See also setRight().

void QMarginsF::setBottom(qreal bottom)

Sets the bottom margin to bottom.

See also bottom().

void QMarginsF::setLeft(qreal left)

Sets the left margin to left.

See also left().

void QMarginsF::setRight(qreal right)

Sets the right margin to right.

See also right().

void QMarginsF::setTop(qreal Top)

Sets the Top margin to Top.

See also top().

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.

See also QMarginsF().

qreal QMarginsF::top() const

Returns the top margin.

See also setTop().

QMarginsF &QMarginsF::operator*=(qreal factor)

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

See also operator/=().

QMarginsF &QMarginsF::operator+=(const QMarginsF &margins)

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

See also operator-=().

QMarginsF &QMarginsF::operator+=(qreal addend)

This is an overloaded function.

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

See also operator-=().

QMarginsF &QMarginsF::operator-=(const QMarginsF &margins)

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

See also operator+=().

QMarginsF &QMarginsF::operator-=(qreal subtrahend)

This is an overloaded function.

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

See also operator+=().

QMarginsF &QMarginsF::operator/=(qreal divisor)

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

See also operator*=().

Related Non-Members

bool QMarginsF::operator!=(const QMarginsF &lhs, const QMarginsF &rhs)

Returns true if lhs and rhs are different; otherwise returns false.

QMarginsF QMarginsF::operator*(const QMarginsF &lhs, qreal rhs)

This is an overloaded function.

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

See also QMarginsF::operator*=() and QMarginsF::operator/=().

QMarginsF QMarginsF::operator*(qreal lhs, const QMarginsF &rhs)

This is an overloaded function.

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

See also QMarginsF::operator*=() and QMarginsF::operator/=().

QMarginsF QMarginsF::operator+(const QMarginsF &lhs, const QMarginsF &rhs)

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

See also QMarginsF::operator+=() and QMarginsF::operator-=().

QMarginsF QMarginsF::operator+(const QMarginsF &lhs, qreal rhs)

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

See also QMarginsF::operator+=() and QMarginsF::operator-=().

QMarginsF QMarginsF::operator+(qreal lhs, const QMarginsF &rhs)

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

See also QMarginsF::operator+=() and QMarginsF::operator-=().

QMarginsF QMarginsF::operator+(const QMarginsF &margins)

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

QMarginsF QMarginsF::operator-(const QMarginsF &lhs, const QMarginsF &rhs)

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

See also QMarginsF::operator+=() and QMarginsF::operator-=().

QMarginsF QMarginsF::operator-(const QMarginsF &lhs, qreal rhs)

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

See also QMarginsF::operator+=() and QMarginsF::operator-=().

QMarginsF QMarginsF::operator-(const QMarginsF &margins)

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

QMarginsF QMarginsF::operator/(const QMarginsF &lhs, qreal rhs)

This is an overloaded function.

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

See also QMarginsF::operator*=() and QMarginsF::operator/=().

QDataStream &QMarginsF::operator<<(QDataStream &stream, const QMarginsF &m)

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

See also Serializing Qt Data Types.

bool QMarginsF::operator==(const QMarginsF &lhs, const QMarginsF &rhs)

Returns true if lhs and rhs are equal; otherwise returns false.

QDataStream &QMarginsF::operator>>(QDataStream &stream, QMarginsF &m)

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

See also Serializing Qt Data Types.

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