Referencia de la Clase QSize

The QSize class defines the size of a two-dimensional object. Más...

#include <qsize.h>

Lista de todos los miembros.

Tipos públicos
enum	ScaleMode {   ScaleFree, ScaleMin, ScaleMax, ScaleFree,   ScaleMin, ScaleMax }
enum	ScaleMode {   ScaleFree, ScaleMin, ScaleMax, ScaleFree,   ScaleMin, ScaleMax }
Métodos públicos
	QSize ()
	QSize (int w, int h)
bool	isNull () const
bool	isEmpty () const
bool	isValid () const
int	width () const
int	height () const
void	setWidth (int w)
void	setHeight (int h)
void	transpose ()
void	scale (int w, int h, ScaleMode mode)
void	scale (const QSize &s, ScaleMode mode)
QSize	expandedTo (const QSize &) const
QSize	boundedTo (const QSize &) const
QCOORD &	rwidth ()
QCOORD &	rheight ()
QSize &	operator+= (const QSize &)
QSize &	operator-= (const QSize &)
QSize &	operator*= (int c)
QSize &	operator*= (double c)
QSize &	operator/= (int c)
QSize &	operator/= (double c)
	QSize ()
	QSize (int w, int h)
bool	isNull () const
bool	isEmpty () const
bool	isValid () const
int	width () const
int	height () const
void	setWidth (int w)
void	setHeight (int h)
void	transpose ()
void	scale (int w, int h, ScaleMode mode)
void	scale (const QSize &s, ScaleMode mode)
QSize	expandedTo (const QSize &) const
QSize	boundedTo (const QSize &) const
QCOORD &	rwidth ()
QCOORD &	rheight ()
QSize &	operator+= (const QSize &)
QSize &	operator-= (const QSize &)
QSize &	operator*= (int c)
QSize &	operator*= (double c)
QSize &	operator/= (int c)
QSize &	operator/= (double c)
Amigas
bool	operator== (const QSize &, const QSize &)
bool	operator!= (const QSize &, const QSize &)
const QSize	operator+ (const QSize &, const QSize &)
const QSize	operator- (const QSize &, const QSize &)
const QSize	operator* (const QSize &, int)
const QSize	operator* (int, const QSize &)
const QSize	operator* (const QSize &, double)
const QSize	operator* (double, const QSize &)
const QSize	operator/ (const QSize &, int)
const QSize	operator/ (const QSize &, double)
bool	operator== (const QSize &, const QSize &)
bool	operator!= (const QSize &, const QSize &)
const QSize	operator+ (const QSize &, const QSize &)
const QSize	operator- (const QSize &, const QSize &)
const QSize	operator* (const QSize &, int)
const QSize	operator* (int, const QSize &)
const QSize	operator* (const QSize &, double)
const QSize	operator* (double, const QSize &)
const QSize	operator/ (const QSize &, int)
const QSize	operator/ (const QSize &, double)
Funciones relacionadas
(Observar que estas no son funciones miembro.)
const QSize	operator
const QSize	operator
const QSize	operator
QDataStream &	operator<< (QDataStream &s, const QSize &sz)
QDataStream &	operator>> (QDataStream &s, QSize &sz)

---

Descripción detallada

The QSize class defines the size of a two-dimensional object.

A size is specified by a width and a height.

The coordinate type is QCOORD (defined in <qwindowdefs.h> as int). The minimum value of QCOORD is QCOORD_MIN (-2147483648) and the maximum value is QCOORD_MAX (2147483647).

The size can be set in the constructor and changed with setWidth() and setHeight(), or using operator+=(), operator-=(), operator*=() and operator/=(), etc. You can swap the width and height with transpose(). You can get a size which holds the maximum height and width of two sizes using expandedTo(), and the minimum height and width of two sizes using boundedTo().

Ver también:

QPoint, QRect

---

Documentación de las enumeraciones miembro de la clase

enum QSize::ScaleMode

This enum type defines the different ways of scaling a size.

scaling.png

ScaleFree The size is scaled freely. The ratio is not preserved. ScaleMin The size is scaled to a rectangle as large as possible inside a given rectangle, preserving the aspect ratio. ScaleMax The size is scaled to a rectangle as small as possible outside a given rectangle, preserving the aspect ratio.

Ver también:

QSize::scale(), QImage::scale(), QImage::smoothScale()

Valores de enumeraciones:

ScaleFree
ScaleMin
ScaleMax
ScaleFree
ScaleMin
ScaleMax

enum QSize::ScaleMode

Valores de enumeraciones:

ScaleFree
ScaleMin
ScaleMax
ScaleFree
ScaleMin
ScaleMax

---

Documentación del constructor y destructor

QSize::QSize

(

)

[inline]

Constructs a size with invalid (negative) width and height.

QSize::QSize	(	int	w,
		int	h
	)		[inline]

Constructs a size with width w and height h.

QSize::QSize

(

)

QSize::QSize	(	int	w,
		int	h
	)

---

Documentación de las funciones miembro

QSize QSize::boundedTo

(

const QSize &

otherSize

)

const [inline]

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

QSize QSize::boundedTo

(

const QSize &

)

const

QSize QSize::expandedTo

(

const QSize &

otherSize

)

const [inline]

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

QSize QSize::expandedTo

(

const QSize &

)

const

int QSize::height

(

)

const [inline]

Returns the height.

Ver también:

width()

int QSize::height

(

)

const

bool QSize::isEmpty

(

void

)

const [inline]

Returns TRUE if the width is less than or equal to 0, or the height is less than or equal to 0; otherwise returns FALSE.

bool QSize::isEmpty

(

)

const

bool QSize::isNull

(

)

const

bool QSize::isNull

(

)

const [inline]

Returns TRUE if the width is 0 and the height is 0; otherwise returns FALSE.

bool QSize::isValid

(

)

const

bool QSize::isValid

(

void

)

const [inline]

Returns TRUE if the width is equal to or greater than 0 and the height is equal to or greater than 0; otherwise returns FALSE.

QSize & QSize::operator*=

(

int

c

)

[inline]

Multiplies both the width and height by c and returns a reference to the size.

QSize & QSize::operator*=

(

double

c

)

[inline]

QSize& QSize::operator*=

(

int

c

)

QSize& QSize::operator*=

(

double

c

)

QSize& QSize::operator+=

(

const QSize &

)

QSize & QSize::operator+=

(

const QSize &

s

)

[inline]

Adds s to the size and returns a reference to this size.

Example:

    QSize s(  3, 7 );
    QSize r( -1, 4 );
    s += r;                     // s becomes (2,11)

QSize & QSize::operator-=

(

const QSize &

s

)

[inline]

Subtracts s from the size and returns a reference to this size.

Example:

    QSize s(  3, 7 );
    QSize r( -1, 4 );
    s -= r;                     // s becomes (4,3)

QSize& QSize::operator-=

(

const QSize &

)

QSize& QSize::operator/=

(

double

c

)

QSize & QSize::operator/=

(

double

c

)

[inline]

Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Divides both the width and height by c and returns a reference to the size.

Note that the result is truncated.

QSize & QSize::operator/=

(

int

c

)

[inline]

Divides both the width and height by c and returns a reference to the size.

QSize& QSize::operator/=

(

int

c

)

QCOORD& QSize::rheight

(

)

QCOORD & QSize::rheight

(

)

[inline]

Returns a reference to the height.

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

Example:

    QSize s( 100, 10 );
    s.rheight() += 5;           // s becomes (100,15)

Ver también:

rwidth()

QCOORD& QSize::rwidth

(

)

QCOORD & QSize::rwidth

(

)

[inline]

Returns a reference to the width.

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

Example:

    QSize s( 100, 10 );
    s.rwidth() += 20;           // s becomes (120,10)

Ver también:

rheight()

void QSize::scale	(	const QSize &	s,
		ScaleMode	mode
	)

void QSize::scale	(	const QSize &	s,
		ScaleMode	mode
	)

Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Equivalent to scale({s}.width(), {s}.height(), mode).

void QSize::scale	(	int	w,
		int	h,
		ScaleMode	mode
	)

Scales the size to a rectangle of width w and height h according to the ScaleMode mode.

If mode is ScaleFree, the size is set to (w, h). If mode is ScaleMin, the current size is scaled to a rectangle as large as possible inside (w, h), preserving the aspect ratio. If mode is ScaleMax, the current size is scaled to a rectangle as small as possible outside (w, h), preserving the aspect ratio.

Example:

    QSize t1( 10, 12 );
    t1.scale( 60, 60, QSize::ScaleFree );
    // t1 is (60, 60)

    QSize t2( 10, 12 );
    t2.scale( 60, 60, QSize::ScaleMin );
    // t2 is (50, 60)

    QSize t3( 10, 12 );
    t3.scale( 60, 60, QSize::ScaleMax );
    // t3 is (60, 72)

void QSize::scale	(	int	w,
		int	h,
		ScaleMode	mode
	)

void QSize::setHeight

(

int

h

)

void QSize::setHeight

(

int

h

)

[inline]

Sets the height to h.

Ver también:

height(), setWidth()

void QSize::setWidth

(

int

w

)

void QSize::setWidth

(

int

w

)

[inline]

Sets the width to w.

Ver también:

width(), setHeight()

void QSize::transpose

(

)

void QSize::transpose

(

)

Swaps the values of width and height.

int QSize::width

(

)

const

int QSize::width

(

)

const [inline]

Returns the width.

Ver también:

height()

---

Documentación de las funciones relacionadas y clases amigas

const QSize operator [related]

Multiplies s by c and returns the result.

const QSize operator [related]

Multiplies s by c and returns the result.

const QSize operator [related]

Multiplies s by c and returns the result.

bool operator!=	(	const QSize &	s1,
		const QSize &	s2
	)		[friend]

Returns TRUE if s1 and s2 are different; otherwise returns FALSE.

bool operator!=	(	const QSize &	s1,
		const QSize &	s2
	)		[friend]

const QSize operator*	(	double	c,
		const QSize &	s
	)		[friend]

const QSize operator*	(	int	c,
		const QSize &	s
	)		[friend]

const QSize operator*	(	const QSize &	s,
		double	c
	)		[friend]

const QSize operator*	(	double	c,
		const QSize &	s
	)		[friend]

const QSize operator*	(	const QSize &	s,
		int	c
	)		[friend]

Multiplies s by c and returns the result.

const QSize operator*	(	int	c,
		const QSize &	s
	)		[friend]

const QSize operator*	(	const QSize &	s,
		double	c
	)		[friend]

const QSize operator*	(	const QSize &	s,
		int	c
	)		[friend]

const QSize operator+	(	const QSize &	s1,
		const QSize &	s2
	)		[friend]

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

const QSize operator+	(	const QSize &	s1,
		const QSize &	s2
	)		[friend]

const QSize operator-	(	const QSize &	s1,
		const QSize &	s2
	)		[friend]

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

const QSize operator-	(	const QSize &	s1,
		const QSize &	s2
	)		[friend]

const QSize operator/	(	const QSize &	s,
		double	c
	)		[friend]

const QSize operator/	(	const QSize &	s,
		int	c
	)		[friend]

const QSize operator/	(	const QSize &	s,
		double	c
	)		[friend]

Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Divides s by c and returns the result.

Note that the result is truncated.

const QSize operator/	(	const QSize &	s,
		int	c
	)		[friend]

Divides s by c and returns the result.

QDataStream & operator<<	(	QDataStream &	s,
		const QSize &	sz
	)		[related]

Writes the size sz to the stream s and returns a reference to the stream.

Ver también:

Format of the QDataStream operators

bool operator==	(	const QSize &	s1,
		const QSize &	s2
	)		[friend]

bool operator==	(	const QSize &	s1,
		const QSize &	s2
	)		[friend]

Returns TRUE if s1 and s2 are equal; otherwise returns FALSE.

QDataStream & operator>>	(	QDataStream &	s,
		QSize &	sz
	)		[related]

Reads the size from the stream s into size sz and returns a reference to the stream.

Ver también:

Format of the QDataStream operators

---

La documentación para esta clase fue generada a partir de los siguientes ficheros:

• src/qt/include/qsize.h
• src/qt/src/kernel/qsize.h
• src/qt/src/kernel/qsize.cpp