Referencia de la Clase Spacer

#include <layout.h>

Diagrama de herencias de Spacer

Lista de todos los miembros.

Tipos públicos
enum	SizeType {   Fixed = 0, Minimum = MayGrow, Maximum = MayShrink, Preferred = MayGrow|MayShrink,   MinimumExpanding = Minimum|ExpMask, Expanding = MinimumExpanding|MayShrink }
Métodos públicos
	Spacer (QWidget *parent, const char *name)
QSize	minimumSize () const
QSize	sizeHint () const
void	setSizeType (SizeType t)
SizeType	sizeType () const
int	alignment () const
Orientation	orientation () const
void	setOrientation (Orientation o)
void	setInteraciveMode (bool b)
void	setSizeHint (const QSize &s)
Métodos protegidos
void	paintEvent (QPaintEvent *e)
void	resizeEvent (QResizeEvent *e)
void	updateMask ()
Atributos protegidos
Qt::Orientation	orient
bool	interactive
QSize	sh
Propiedades
Orientation	orientation
SizeType	sizeType
QSize	sizeHint
	the recommended size for the widget

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Documentación de las enumeraciones miembro de la clase

enum Spacer::SizeType

Valores de enumeraciones:

Fixed
Minimum
Maximum
Preferred
MinimumExpanding
Expanding

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Documentación del constructor y destructor

Spacer::Spacer	(	QWidget *	parent,
		const char *	name
	)

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Documentación de las funciones miembro

int Spacer::alignment

(

)

const

QSize Spacer::minimumSize

(

)

const

Reimplementado de QWidget.

Orientation Spacer::orientation

(

)

const

void Spacer::paintEvent

(

QPaintEvent *

)

[protected, virtual]

This event handler can be reimplemented in a subclass to receive paint events.

A paint event is a request to repaint all or part of the widget. It can happen as a result of repaint() or update(), or because the widget was obscured and has now been uncovered, or for many other reasons.

Many widgets can simply repaint their entire surface when asked to, but some slow widgets need to optimize by painting only the requested region: QPaintEvent::region(). This speed optimization does not change the result, as painting is clipped to that region during event processing. QListView and QCanvas do this, for example.

Qt also tries to speed up painting by merging multiple paint events into one. When update() is called several times or the window system sends several paint events, Qt merges these events into one event with a larger region (see QRegion::unite()). repaint() does not permit this optimization, so we suggest using update() when possible.

When the paint event occurs, the update region has normally been erased, so that you're painting on the widget's background. There are a couple of exceptions and QPaintEvent::erased() tells you whether the widget has been erased or not.

The background can be set using setBackgroundMode(), setPaletteBackgroundColor() or setBackgroundPixmap(). The documentation for setBackgroundMode() elaborates on the background; we recommend reading it.

Ver también:

event(), repaint(), update(), QPainter, QPixmap, QPaintEvent

Reimplementado de QWidget.

void Spacer::resizeEvent

(

QResizeEvent *

)

[protected, virtual]

This event handler can be reimplemented in a subclass to receive widget resize events. When resizeEvent() is called, the widget already has its new geometry. The old size is accessible through QResizeEvent::oldSize().

The widget will be erased and receive a paint event immediately after processing the resize event. No drawing need be (or should be) done inside this handler.

Widgets that have been created with the WNoAutoErase flag will not be erased. Nevertheless, they will receive a paint event for their entire area afterwards. Again, no drawing needs to be done inside this handler.

The default implementation calls updateMask() if the widget has automatic masking enabled.

Ver también:

moveEvent(), event(), resize(), QResizeEvent, paintEvent()

Reimplementado de QWidget.

void Spacer::setInteraciveMode

(

bool

b

)

[inline]

void Spacer::setOrientation

(

Qt::Orientation

o

)

void Spacer::setSizeHint

(

const QSize &

s

)

void Spacer::setSizeType

(

SizeType

t

)

QSize Spacer::sizeHint

(

)

const [virtual]

Reimplementado de QWidget.

SizeType Spacer::sizeType

(

)

const

void Spacer::updateMask

(

)

[protected, virtual]

This function can be reimplemented in a subclass to support transparent widgets. It should be called whenever a widget changes state in a way that means that the shape mask must be recalculated.

Ver también:

setAutoMask(), updateMask(), setMask(), clearMask()

Reimplementado de QWidget.

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Documentación de los datos miembro

bool Spacer::interactive [protected]

Qt::Orientation Spacer::orient [protected]

QSize Spacer::sh [protected]

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Documentación de propiedades

Qt::Orientation Spacer::orientation [read, write]

QSize Spacer::sizeHint [read, write]

the recommended size for the widget

If the value of this property is an invalid size, no size is recommended.

The default implementation of sizeHint() returns an invalid size if there is no layout for this widget, and returns the layout's preferred size otherwise.

Ver también:

QSize::isValid(), minimumSizeHint(), sizePolicy(), setMinimumSize(), updateGeometry()

Reimplementado de QWidget.

Spacer::SizeType Spacer::sizeType [read, write]

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

• src/qt/tools/designer/designer/layout.h
• src/qt/tools/designer/designer/layout.cpp