QtCore.QSizeF Class Reference

The QSizeF class defines the size of a two-dimensional object using floating point precision. More...

Inheritance diagram for QtCore.QSizeF:

Collaboration diagram for QtCore.QSizeF:

Public Member Functions
override bool	Equals (object o)
override int	GetHashCode ()
	QSizeF ()
	QSizeF (QSize sz)
	QSizeF (QSizeF copy)
	QSizeF (double w, double h)
virtual void	CreateProxy ()
new QSizeF	BoundedTo (QSizeF arg1)
new QSizeF	ExpandedTo (QSizeF arg1)
new bool	IsEmpty ()
new bool	IsNull ()
new bool	IsValid ()
new double	Rheight ()
new double	Rwidth ()
new void	Scale (QSizeF s, Qt.AspectRatioMode mode)
new void	Scale (double w, double h, Qt.AspectRatioMode mode)
new QSize	ToSize ()
new void	Transpose ()
new void	Dispose ()

Static Public Member Functions
static bool	operator!= (QSizeF arg1, QSizeF arg2)
static QSizeF	operator* (QSizeF arg1, double arg2)
static QSizeF	operator+ (QSizeF arg1, QSizeF arg2)
static QSizeF	operator- (QSizeF arg1, QSizeF arg2)
static QSizeF	operator/ (QSizeF arg1, double arg2)
static bool	operator== (QSizeF arg1, QSizeF arg2)

Protected Member Functions
	QSizeF (System.Type dummy)

Protected Attributes
SmokeInvocation	interceptor

Properties
new double	Height [get, set]
new double	Width [get, set]
virtual System.IntPtr	SmokeObject [get, set]

Detailed Description

The QSizeF class defines the size of a two-dimensional object using floating 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 or equal to 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 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.

See also QSize, QPointF, and QRectF.

Constructor & Destructor Documentation

QtCore.QSizeF.QSizeF ( System.Type  dummy )

protected

QtCore.QSizeF.QSizeF

(

)

Constructs an invalid size.

See also isValid().

QtCore.QSizeF.QSizeF

(

QSize

sz

)

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

See also toSize().

QtCore.QSizeF.QSizeF

(

QSizeF

copy

)

Constructs an invalid size.

See also isValid().

QtCore.QSizeF.QSizeF	(	double	w,
		double	h
	)

Constructs an invalid size.

See also isValid().

Member Function Documentation

new QSizeF QtCore.QSizeF.BoundedTo

(

QSizeF

arg1

)

Returns a size holding the minimum width and height of this size and the given otherSize.

See also expandedTo() and scale().

virtual void QtCore.QSizeF.CreateProxy ( )

virtual

new void QtCore.QSizeF.Dispose

(

)

override bool QtCore.QSizeF.Equals

(

object

o

)

new QSizeF QtCore.QSizeF.ExpandedTo

(

QSizeF

arg1

)

Returns a size holding the maximum width and height of this size and the given otherSize.

See also boundedTo() and scale().

override int QtCore.QSizeF.GetHashCode

(

)

new bool QtCore.QSizeF.IsEmpty

(

)

Returns true if either of the width and height is less than or equal to 0; otherwise returns false.

See also isNull() and isValid().

new bool QtCore.QSizeF.IsNull

(

)

Returns true if both the width and height are +0.0; otherwise returns false.

Note: Since this function treats +0.0 and -0.0 differently, sizes with zero width and height where either or both values have a negative sign are not defined to be null sizes.

See also isValid() and isEmpty().

new bool QtCore.QSizeF.IsValid

(

)

Returns true if both the width and height is equal to or greater than 0; otherwise returns false.

See also isNull() and isEmpty().

static bool QtCore.QSizeF.operator!= ( QSizeF  arg1, QSizeF  arg2  )

static

static QSizeF QtCore.QSizeF.operator* ( QSizeF  arg1, double  arg2  )

static

This is an overloaded function.

Multiplies the given size by the given factor and returns the result.

See also QSizeF::scale().

static QSizeF QtCore.QSizeF.operator+ ( QSizeF  arg1, QSizeF  arg2  )

static

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

static QSizeF QtCore.QSizeF.operator- ( QSizeF  arg1, QSizeF  arg2  )

static

Returns s2 subtracted from s1; each component is subtracted separately.

static QSizeF QtCore.QSizeF.operator/ ( QSizeF  arg1, double  arg2  )

static

This is an overloaded function.

Divides the given size by the given divisor and returns the result.

See also QSizeF::scale().

static bool QtCore.QSizeF.operator== ( QSizeF  arg1, QSizeF  arg2  )

static

new double QtCore.QSizeF.Rheight

(

)

Returns a reference to the height.

Using a reference makes it possible to manipulate the height directly. For example:

QSizeF size(100, 10.2);

size.rheight() += 5.5;

// size becomes (100,15.7)

See also rwidth() and setHeight().

new double QtCore.QSizeF.Rwidth

(

)

Returns a reference to the width.

Using a reference makes it possible to manipulate the width directly. For example:

QSizeF size(100.3, 10);

size.rwidth() += 20.5;

// size becomes (120.8,10)

See also rheight() and setWidth().

new void QtCore.QSizeF.Scale	(	QSizeF	s,
		Qt.AspectRatioMode	mode
	)

This is an overloaded function.

Scales the size to a rectangle with the given size, according to the specified mode.

new void QtCore.QSizeF.Scale	(	double	w,
		double	h,
		Qt.AspectRatioMode	mode
	)

Scales the size to a rectangle with the given width and height, according to the specified mode.

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

If mode is Qt::KeepAspectRatio, the current size is scaled to a rectangle as large as possible inside (width, height), preserving the aspect ratio.

If mode is Qt::KeepAspectRatioByExpanding, the current size is scaled to a rectangle as small as possible outside (width, height), preserving the aspect ratio.

Example:

QSizeF t1(10, 12);

t1.scale(60, 60, Qt::IgnoreAspectRatio);

// t1 is (60, 60)

QSizeF t2(10, 12);

t2.scale(60, 60, Qt::KeepAspectRatio);

// t2 is (50, 60)

QSizeF t3(10, 12);

t3.scale(60, 60, Qt::KeepAspectRatioByExpanding);

// t3 is (60, 72)

See also setWidth() and setHeight().

new QSize QtCore.QSizeF.ToSize

(

)

Returns an integer based copy of this size.

Note that the coordinates in the returned size will be rounded to the nearest integer.

See also QSizeF().

new void QtCore.QSizeF.Transpose

(

)

Swaps the width and height values.

See also setWidth() and setHeight().

Member Data Documentation

SmokeInvocation QtCore.QSizeF.interceptor

protected

Property Documentation

new double QtCore.QSizeF.Height

getset

Returns the height.

Sets the height to the given height.

virtual System.IntPtr QtCore.QSizeF.SmokeObject

getset

new double QtCore.QSizeF.Width

getset

Returns the width.

Sets the width to the given width.