Module qtjambi

Package io.qt.core

Class QRectF

java.lang.Object

io.qt.QtObject

io.qt.core.QRectF

All Implemented Interfaces:

QtObjectInterface, Cloneable

public class QRectF
extends QtObject
implements Cloneable

Defines a finite rectangle in the plane using floating point precision

Java wrapper for Qt class QRectF

Constructor Summary

Constructors

Constructor	Description
QRectF()	See QRectF::QRectF()
QRectF(double left, double top, double width, double height)	See QRectF::QRectF(qreal,qreal,qreal,qreal)
QRectF(QPointF topleft, QPoint bottomRight)	Overloaded constructor for QRectF(io.qt.core.QPointF, io.qt.core.QPointF).
QRectF(QPointF topleft, QPointF bottomRight)	See QRectF::QRectF(QPointF,QPointF)
QRectF(QPointF topleft, QSize size)	Overloaded constructor for QRectF(io.qt.core.QPointF, io.qt.core.QSizeF).
QRectF(QPointF topleft, QSizeF size)	See QRectF::QRectF(QPointF,QSizeF)
QRectF(QPoint topleft, QPoint bottomRight)	Overloaded constructor for QRectF(io.qt.core.QPointF, io.qt.core.QPointF).
QRectF(QPoint topleft, QPointF bottomRight)	Overloaded constructor for QRectF(io.qt.core.QPointF, io.qt.core.QPointF).
QRectF(QPoint topleft, QSize size)	Overloaded constructor for QRectF(io.qt.core.QPointF, io.qt.core.QSizeF).
QRectF(QPoint topleft, QSizeF size)	Overloaded constructor for QRectF(io.qt.core.QPointF, io.qt.core.QSizeF).
QRectF(QRect rect)	See QRectF::QRectF(QRect)
QRectF(QRectF other)	See QRectF::QRectF(QRectF)

Method Summary

Modifier and Type	Method	Description
final QRectF	add(QMargins margins)	Overloaded function for add(io.qt.core.QMarginsF).
final QRectF	add(QMarginsF margins)	See QRectF::operator+=(QMarginsF)
final void	adjust(double x1, double y1, double x2, double y2)	See QRectF::adjust(qreal,qreal,qreal,qreal)
final QRectF	adjusted(double x1, double y1, double x2, double y2)	See QRectF::adjusted(qreal,qreal,qreal,qreal)const
final double	bottom()	See QRectF::bottom()const
final QPointF	bottomLeft()	See QRectF::bottomLeft()const
final QPointF	bottomRight()	See QRectF::bottomRight()const
final QPointF	center()	See QRectF::center()const
QRectF	clone()	Creates and returns a copy of this object.
final boolean	contains(double x, double y)	See QRectF::contains(qreal,qreal)const
final boolean	contains(QPoint p)	Overloaded function for contains(io.qt.core.QPointF).
final boolean	contains(QPointF p)	See QRectF::contains(QPointF)const
final boolean	contains(QRect r)	Overloaded function for contains(io.qt.core.QRectF).
final boolean	contains(QRectF r)	See QRectF::contains(QRectF)const
final boolean	equals(QRect r2)	Overloaded function for equals(io.qt.core.QRectF).
final boolean	equals(QRectF r2)	See operator==(QRectF,QRectF)
boolean	equals(Object other)	See operator==(QRectF,QRectF)
int	hashCode()	Returns the objects's hash code computed by qHash(QRectF).
final double	height()	See QRectF::height()const
final QRectF	intersected(QRect other)	Overloaded function for intersected(io.qt.core.QRectF).
final QRectF	intersected(QRectF other)	See QRectF::intersected(QRectF)const
final boolean	intersects(QRect r)	Overloaded function for intersects(io.qt.core.QRectF).
final boolean	intersects(QRectF r)	See QRectF::intersects(QRectF)const
final boolean	isEmpty()	See QRectF::isEmpty()const
final boolean	isNull()	See QRectF::isNull()const
final boolean	isValid()	See QRectF::isValid()const
final double	left()	See QRectF::left()const
final QRectF	marginsAdded(QMargins margins)	Overloaded function for marginsAdded(io.qt.core.QMarginsF).
final QRectF	marginsAdded(QMarginsF margins)	See QRectF::marginsAdded(QMarginsF)const
final QRectF	marginsRemoved(QMargins margins)	Overloaded function for marginsRemoved(io.qt.core.QMarginsF).
final QRectF	marginsRemoved(QMarginsF margins)	See QRectF::marginsRemoved(QMarginsF)const
final QRectF	minus(QMargins rhs)	Overloaded function for minus(io.qt.core.QMarginsF).
final QRectF	minus(QMarginsF rhs)	See operator-(QRectF,QMarginsF)
final void	moveBottom(double pos)	See QRectF::moveBottom(qreal)
final void	moveBottomLeft(QPoint p)	Overloaded function for moveBottomLeft(io.qt.core.QPointF).
final void	moveBottomLeft(QPointF p)	See QRectF::moveBottomLeft(QPointF)
final void	moveBottomRight(QPoint p)	Overloaded function for moveBottomRight(io.qt.core.QPointF).
final void	moveBottomRight(QPointF p)	See QRectF::moveBottomRight(QPointF)
final void	moveCenter(QPoint p)	Overloaded function for moveCenter(io.qt.core.QPointF).
final void	moveCenter(QPointF p)	See QRectF::moveCenter(QPointF)
final void	moveLeft(double pos)	See QRectF::moveLeft(qreal)
final void	moveRight(double pos)	See QRectF::moveRight(qreal)
final void	moveTo(double x, double y)	See QRectF::moveTo(qreal,qreal)
final void	moveTo(QPoint p)	Overloaded function for moveTo(io.qt.core.QPointF).
final void	moveTo(QPointF p)	See QRectF::moveTo(QPointF)
final void	moveTop(double pos)	See QRectF::moveTop(qreal)
final void	moveTopLeft(QPoint p)	Overloaded function for moveTopLeft(io.qt.core.QPointF).
final void	moveTopLeft(QPointF p)	See QRectF::moveTopLeft(QPointF)
final void	moveTopRight(QPoint p)	Overloaded function for moveTopRight(io.qt.core.QPointF).
final void	moveTopRight(QPointF p)	See QRectF::moveTopRight(QPointF)
final QRectF	normalized()	See QRectF::normalized()const
final QRectF	plus(QMargins rhs)	Overloaded function for plus(io.qt.core.QMarginsF).
final QRectF	plus(QMarginsF rhs)	See operator+(QRectF,QMarginsF)
void	readFrom(QDataStream arg__1)	See operator>>(QDataStream&,QRectF&)
final double	right()	See QRectF::right()const
final void	setBottom(double pos)	See QRectF::setBottom(qreal)
final void	setBottomLeft(QPoint p)	Overloaded function for setBottomLeft(io.qt.core.QPointF).
final void	setBottomLeft(QPointF p)	See QRectF::setBottomLeft(QPointF)
final void	setBottomRight(QPoint p)	Overloaded function for setBottomRight(io.qt.core.QPointF).
final void	setBottomRight(QPointF p)	See QRectF::setBottomRight(QPointF)
final void	setCoords(double x1, double y1, double x2, double y2)	See QRectF::setCoords(qreal,qreal,qreal,qreal)
final void	setHeight(double h)	See QRectF::setHeight(qreal)
final void	setLeft(double pos)	See QRectF::setLeft(qreal)
final void	setRect(double x, double y, double w, double h)	See QRectF::setRect(qreal,qreal,qreal,qreal)
final void	setRight(double pos)	See QRectF::setRight(qreal)
final void	setSize(QSize s)	Overloaded function for setSize(io.qt.core.QSizeF).
final void	setSize(QSizeF s)	See QRectF::setSize(QSizeF)
final void	setTop(double pos)	See QRectF::setTop(qreal)
final void	setTopLeft(QPoint p)	Overloaded function for setTopLeft(io.qt.core.QPointF).
final void	setTopLeft(QPointF p)	See QRectF::setTopLeft(QPointF)
final void	setTopRight(QPoint p)	Overloaded function for setTopRight(io.qt.core.QPointF).
final void	setTopRight(QPointF p)	See QRectF::setTopRight(QPointF)
final void	setWidth(double w)	See QRectF::setWidth(qreal)
final void	setX(double pos)	See QRectF::setX(qreal)
final void	setY(double pos)	See QRectF::setY(qreal)
final QSizeF	size()	See QRectF::size()const
final QRectF	subtract(QMargins margins)	Overloaded function for subtract(io.qt.core.QMarginsF).
final QRectF	subtract(QMarginsF margins)	See QRectF::operator-=(QMarginsF)
final QRect	toAlignedRect()	See QRectF::toAlignedRect()const
final double	top()	See QRectF::top()const
final QPointF	topLeft()	See QRectF::topLeft()const
final QPointF	topRight()	See QRectF::topRight()const
final QRect	toRect()	See QRectF::toRect()const
String	toString()	See operator<<(QDebug,QRectF)
final void	translate(double dx, double dy)	See QRectF::translate(qreal,qreal)
final void	translate(QPoint p)	Overloaded function for translate(io.qt.core.QPointF).
final void	translate(QPointF p)	See QRectF::translate(QPointF)
final QRectF	translated(double dx, double dy)	See QRectF::translated(qreal,qreal)const
final QRectF	translated(QPoint p)	Overloaded function for translated(io.qt.core.QPointF).
final QRectF	translated(QPointF p)	See QRectF::translated(QPointF)const
final QRectF	transposed()	See QRectF::transposed()const
final QRectF	united(QRect other)	Overloaded function for united(io.qt.core.QRectF).
final QRectF	united(QRectF other)	See QRectF::united(QRectF)const
final double	width()	See QRectF::width()const
void	writeTo(QDataStream arg__1)	See operator<<(QDataStream&,QRectF)
final double	x()	See QRectF::x()const
final double	y()	See QRectF::y()const

Methods inherited from class io.qt.QtObject

dispose, isDisposed

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

QRectF

public QRectF()

See QRectF::QRectF()

QRectF

public QRectF(QPointF topleft,
 QPointF bottomRight)

See QRectF::QRectF(QPointF,QPointF)

Parameters:

topleft -

bottomRight -

QRectF

public QRectF(QPointF topleft,
 QSizeF size)

See QRectF::QRectF(QPointF,QSizeF)

Parameters:

topleft -

size -

QRectF

public QRectF(QRect rect)

See QRectF::QRectF(QRect)

Parameters:

rect -

QRectF

public QRectF(QRectF other)

See QRectF::QRectF(QRectF)

Parameters:

other -

QRectF

public QRectF(double left,
 double top,
 double width,
 double height)

See QRectF::QRectF(qreal,qreal,qreal,qreal)

Parameters:

left -

top -

width -

height -

QRectF

public QRectF(QPoint topleft,
 QPointF bottomRight)

Overloaded constructor for QRectF(io.qt.core.QPointF, io.qt.core.QPointF).

QRectF

public QRectF(QPointF topleft,
 QPoint bottomRight)

Overloaded constructor for QRectF(io.qt.core.QPointF, io.qt.core.QPointF).

QRectF

public QRectF(QPoint topleft,
 QPoint bottomRight)

Overloaded constructor for QRectF(io.qt.core.QPointF, io.qt.core.QPointF).

QRectF

public QRectF(QPoint topleft,
 QSizeF size)

Overloaded constructor for QRectF(io.qt.core.QPointF, io.qt.core.QSizeF).

QRectF

public QRectF(QPointF topleft,
 QSize size)

Overloaded constructor for QRectF(io.qt.core.QPointF, io.qt.core.QSizeF).

QRectF

public QRectF(QPoint topleft,
 QSize size)

Overloaded constructor for QRectF(io.qt.core.QPointF, io.qt.core.QSizeF).

Method Details

adjust

@QtUninvokable
public final void adjust(double x1,
 double y1,
 double x2,
 double y2)

See QRectF::adjust(qreal,qreal,qreal,qreal)

Parameters:

x1 -

y1 -

x2 -

y2 -

adjusted

@QtUninvokable
public final QRectF adjusted(double x1,
 double y1,
 double x2,
 double y2)

See QRectF::adjusted(qreal,qreal,qreal,qreal)const

Parameters:

x1 -

y1 -

x2 -

y2 -

Returns:

bottom

@QtUninvokable
public final double bottom()

See QRectF::bottom()const

Returns:

bottomLeft

@QtUninvokable
public final QPointF bottomLeft()

See QRectF::bottomLeft()const

Returns:

bottomRight

@QtUninvokable
public final QPointF bottomRight()

See QRectF::bottomRight()const

Returns:

center

@QtUninvokable
public final QPointF center()

See QRectF::center()const

Returns:

contains

@QtUninvokable
public final boolean contains(QPointF p)

See QRectF::contains(QPointF)const

Parameters:

p -

Returns:

contains

@QtUninvokable
public final boolean contains(QRectF r)

See QRectF::contains(QRectF)const

Parameters:

r -

Returns:

contains

@QtUninvokable
public final boolean contains(double x,
 double y)

See QRectF::contains(qreal,qreal)const

Parameters:

x -

y -

Returns:

height

@QtUninvokable
public final double height()

See QRectF::height()const

Returns:

intersected

@QtUninvokable
public final QRectF intersected(QRectF other)

See QRectF::intersected(QRectF)const

Parameters:

other -

Returns:

intersects

@QtUninvokable
public final boolean intersects(QRectF r)

See QRectF::intersects(QRectF)const

Parameters:

r -

Returns:

isEmpty

@QtUninvokable
public final boolean isEmpty()

See QRectF::isEmpty()const

Returns:

isNull

@QtUninvokable
public final boolean isNull()

See QRectF::isNull()const

Returns:

isValid

@QtUninvokable
public final boolean isValid()

See QRectF::isValid()const

Returns:

left

@QtUninvokable
public final double left()

See QRectF::left()const

Returns:

marginsAdded

@QtUninvokable
public final QRectF marginsAdded(QMarginsF margins)

See QRectF::marginsAdded(QMarginsF)const

Parameters:

margins -

Returns:

marginsRemoved

@QtUninvokable
public final QRectF marginsRemoved(QMarginsF margins)

See QRectF::marginsRemoved(QMarginsF)const

Parameters:

margins -

Returns:

moveBottom

@QtUninvokable
public final void moveBottom(double pos)

See QRectF::moveBottom(qreal)

Parameters:

pos -

moveBottomLeft

@QtUninvokable
public final void moveBottomLeft(QPointF p)

See QRectF::moveBottomLeft(QPointF)

Parameters:

p -

moveBottomRight

@QtUninvokable
public final void moveBottomRight(QPointF p)

See QRectF::moveBottomRight(QPointF)

Parameters:

p -

moveCenter

@QtUninvokable
public final void moveCenter(QPointF p)

See QRectF::moveCenter(QPointF)

Parameters:

p -

moveLeft

@QtUninvokable
public final void moveLeft(double pos)

See QRectF::moveLeft(qreal)

Parameters:

pos -

moveRight

@QtUninvokable
public final void moveRight(double pos)

See QRectF::moveRight(qreal)

Parameters:

pos -

moveTo

@QtUninvokable
public final void moveTo(QPointF p)

See QRectF::moveTo(QPointF)

Parameters:

p -

moveTo

@QtUninvokable
public final void moveTo(double x,
 double y)

See QRectF::moveTo(qreal,qreal)

Parameters:

x -

y -

moveTop

@QtUninvokable
public final void moveTop(double pos)

See QRectF::moveTop(qreal)

Parameters:

pos -

moveTopLeft

@QtUninvokable
public final void moveTopLeft(QPointF p)

See QRectF::moveTopLeft(QPointF)

Parameters:

p -

moveTopRight

@QtUninvokable
public final void moveTopRight(QPointF p)

See QRectF::moveTopRight(QPointF)

Parameters:

p -

normalized

@QtUninvokable
public final QRectF normalized()

See QRectF::normalized()const

Returns:

plus

@QtUninvokable
public final QRectF plus(QMarginsF rhs)

See operator+(QRectF,QMarginsF)

Parameters:

rhs -

Returns:

add

@QtUninvokable
public final QRectF add(QMarginsF margins)

See QRectF::operator+=(QMarginsF)

Parameters:

margins -

Returns:

minus

@QtUninvokable
public final QRectF minus(QMarginsF rhs)

See operator-(QRectF,QMarginsF)

Parameters:

rhs -

Returns:

subtract

@QtUninvokable
public final QRectF subtract(QMarginsF margins)

See QRectF::operator-=(QMarginsF)

Parameters:

margins -

Returns:

writeTo

@QtUninvokable
public void writeTo(QDataStream arg__1)

See operator<<(QDataStream&,QRectF)

Parameters:

arg__1 -

equals

@QtUninvokable
public final boolean equals(QRectF r2)

See operator==(QRectF,QRectF)

Parameters:

r2 -

Returns:

readFrom

@QtUninvokable
public void readFrom(QDataStream arg__1)

See operator>>(QDataStream&,QRectF&)

Parameters:

arg__1 -

right

@QtUninvokable
public final double right()

See QRectF::right()const

Returns:

setBottom

@QtUninvokable
public final void setBottom(double pos)

See QRectF::setBottom(qreal)

Parameters:

pos -

setBottomLeft

@QtUninvokable
public final void setBottomLeft(QPointF p)

See QRectF::setBottomLeft(QPointF)

Parameters:

p -

setBottomRight

@QtUninvokable
public final void setBottomRight(QPointF p)

See QRectF::setBottomRight(QPointF)

Parameters:

p -

setCoords

@QtUninvokable
public final void setCoords(double x1,
 double y1,
 double x2,
 double y2)

See QRectF::setCoords(qreal,qreal,qreal,qreal)

Parameters:

x1 -

y1 -

x2 -

y2 -

setHeight

@QtUninvokable
public final void setHeight(double h)

See QRectF::setHeight(qreal)

Parameters:

h -

setLeft

@QtUninvokable
public final void setLeft(double pos)

See QRectF::setLeft(qreal)

Parameters:

pos -

setRect

@QtUninvokable
public final void setRect(double x,
 double y,
 double w,
 double h)

See QRectF::setRect(qreal,qreal,qreal,qreal)

Parameters:

x -

y -

w -

h -

setRight

@QtUninvokable
public final void setRight(double pos)

See QRectF::setRight(qreal)

Parameters:

pos -

setSize

@QtUninvokable
public final void setSize(QSizeF s)

See QRectF::setSize(QSizeF)

Parameters:

s -

setTop

@QtUninvokable
public final void setTop(double pos)

See QRectF::setTop(qreal)

Parameters:

pos -

setTopLeft

@QtUninvokable
public final void setTopLeft(QPointF p)

See QRectF::setTopLeft(QPointF)

Parameters:

p -

setTopRight

@QtUninvokable
public final void setTopRight(QPointF p)

See QRectF::setTopRight(QPointF)

Parameters:

p -

setWidth

@QtUninvokable
public final void setWidth(double w)

See QRectF::setWidth(qreal)

Parameters:

w -

setX

@QtUninvokable
public final void setX(double pos)

See QRectF::setX(qreal)

Parameters:

pos -

setY

@QtUninvokable
public final void setY(double pos)

See QRectF::setY(qreal)

Parameters:

pos -

size

@QtUninvokable
public final QSizeF size()

See QRectF::size()const

Returns:

toAlignedRect

@QtUninvokable
public final QRect toAlignedRect()

See QRectF::toAlignedRect()const

Returns:

toRect

@QtUninvokable
public final QRect toRect()

See QRectF::toRect()const

Returns:

top

@QtUninvokable
public final double top()

See QRectF::top()const

Returns:

topLeft

@QtUninvokable
public final QPointF topLeft()

See QRectF::topLeft()const

Returns:

topRight

@QtUninvokable
public final QPointF topRight()

See QRectF::topRight()const

Returns:

translate

@QtUninvokable
public final void translate(QPointF p)

See QRectF::translate(QPointF)

Parameters:

p -

translate

@QtUninvokable
public final void translate(double dx,
 double dy)

See QRectF::translate(qreal,qreal)

Parameters:

dx -

dy -

translated

@QtUninvokable
public final QRectF translated(QPointF p)

See QRectF::translated(QPointF)const

Parameters:

p -

Returns:

translated

@QtUninvokable
public final QRectF translated(double dx,
 double dy)

See QRectF::translated(qreal,qreal)const

Parameters:

dx -

dy -

Returns:

transposed

@QtUninvokable
public final QRectF transposed()

See QRectF::transposed()const

Returns:

united

@QtUninvokable
public final QRectF united(QRectF other)

See QRectF::united(QRectF)const

Parameters:

other -

Returns:

width

@QtUninvokable
public final double width()

See QRectF::width()const

Returns:

x

@QtUninvokable
public final double x()

See QRectF::x()const

Returns:

y

@QtUninvokable
public final double y()

See QRectF::y()const

Returns:

equals

@QtUninvokable
public boolean equals(Object other)

See operator==(QRectF,QRectF)

Overrides:

equals in class QtObject

Parameters:

other - other object

Returns:

true if the native counterpart of the two objects are one and the same.

hashCode

@QtUninvokable
public int hashCode()

Returns the objects's hash code computed by qHash(QRectF).

Overrides:

hashCode in class Object

toString

@QtUninvokable
public String toString()

See operator<<(QDebug,QRectF)

Overrides:

toString in class Object

clone

@QtUninvokable
public QRectF clone()

Creates and returns a copy of this object.

See QRectF::QRectF(QRectF)

Overrides:

clone in class Object

contains

@QtUninvokable
public final boolean contains(QPoint p)

Overloaded function for contains(io.qt.core.QPointF).

contains

@QtUninvokable
public final boolean contains(QRect r)

Overloaded function for contains(io.qt.core.QRectF).

intersected

@QtUninvokable
public final QRectF intersected(QRect other)

Overloaded function for intersected(io.qt.core.QRectF).

intersects

@QtUninvokable
public final boolean intersects(QRect r)

Overloaded function for intersects(io.qt.core.QRectF).

marginsAdded

@QtUninvokable
public final QRectF marginsAdded(QMargins margins)

Overloaded function for marginsAdded(io.qt.core.QMarginsF).

marginsRemoved

@QtUninvokable
public final QRectF marginsRemoved(QMargins margins)

Overloaded function for marginsRemoved(io.qt.core.QMarginsF).

moveBottomLeft

@QtUninvokable
public final void moveBottomLeft(QPoint p)

Overloaded function for moveBottomLeft(io.qt.core.QPointF).

moveBottomRight

@QtUninvokable
public final void moveBottomRight(QPoint p)

Overloaded function for moveBottomRight(io.qt.core.QPointF).

moveCenter

@QtUninvokable
public final void moveCenter(QPoint p)

Overloaded function for moveCenter(io.qt.core.QPointF).

moveTo

@QtUninvokable
public final void moveTo(QPoint p)

Overloaded function for moveTo(io.qt.core.QPointF).

moveTopLeft

@QtUninvokable
public final void moveTopLeft(QPoint p)

Overloaded function for moveTopLeft(io.qt.core.QPointF).

moveTopRight

@QtUninvokable
public final void moveTopRight(QPoint p)

Overloaded function for moveTopRight(io.qt.core.QPointF).

plus

@QtUninvokable
public final QRectF plus(QMargins rhs)

Overloaded function for plus(io.qt.core.QMarginsF).

add

@QtUninvokable
public final QRectF add(QMargins margins)

Overloaded function for add(io.qt.core.QMarginsF).

minus

@QtUninvokable
public final QRectF minus(QMargins rhs)

Overloaded function for minus(io.qt.core.QMarginsF).

subtract

@QtUninvokable
public final QRectF subtract(QMargins margins)

Overloaded function for subtract(io.qt.core.QMarginsF).

equals

@QtUninvokable
public final boolean equals(QRect r2)

Overloaded function for equals(io.qt.core.QRectF).

setBottomLeft

@QtUninvokable
public final void setBottomLeft(QPoint p)

Overloaded function for setBottomLeft(io.qt.core.QPointF).

setBottomRight

@QtUninvokable
public final void setBottomRight(QPoint p)

Overloaded function for setBottomRight(io.qt.core.QPointF).

setSize

@QtUninvokable
public final void setSize(QSize s)

Overloaded function for setSize(io.qt.core.QSizeF).

setTopLeft

@QtUninvokable
public final void setTopLeft(QPoint p)

Overloaded function for setTopLeft(io.qt.core.QPointF).

setTopRight

@QtUninvokable
public final void setTopRight(QPoint p)

Overloaded function for setTopRight(io.qt.core.QPointF).

translate

@QtUninvokable
public final void translate(QPoint p)

Overloaded function for translate(io.qt.core.QPointF).

translated

@QtUninvokable
public final QRectF translated(QPoint p)

Overloaded function for translated(io.qt.core.QPointF).

united

@QtUninvokable
public final QRectF united(QRect other)

Overloaded function for united(io.qt.core.QRectF).