QMarginsF Class
The QMarginsF class defines the four margins of a rectangle. More...
| Header: | #include <QMarginsF> |
| qmake: | QT += core |
| Since: | Qt 5.3 |
Public Functions
| QMarginsF() | |
| QMarginsF(qreal left, qreal top, qreal right, qreal bottom) | |
| QMarginsF(const QMargins &margins) | |
| 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) |
Related Non-Members
| 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
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 true only if all margins are set to zero.
QMarginsF objects can be streamed as well as compared.
Member Function Documentation
QMarginsF::QMarginsF()
Constructs a margins object with all margins set to 0.
See also isNull().
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(const QMargins &margins)
Constructs margins copied from the given margins
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().
qreal QMarginsF::right() const
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 operator!=(const QMarginsF &lhs, const QMarginsF &rhs)
Returns true if lhs and rhs are different; otherwise returns false.
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 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 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 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 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 operator+(const QMarginsF &margins)
Returns a QMargin object that is formed from all components of margins.
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 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 operator-(const QMarginsF &margins)
Returns a QMargin object that is formed by negating all components of margins.
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 &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 operator==(const QMarginsF &lhs, const QMarginsF &rhs)
Returns true if lhs and rhs are equal; otherwise returns false.
QDataStream &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.
© 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.