Referencia de la Clase QwtDynGridLayout

The QwtDynGridLayout class lays out widgets in a grid, adjusting the number of columns and rows to the current size. Más...

#include <qwt_dyngrid_layout.h>

Diagrama de herencias de QwtDynGridLayout

Lista de todos los miembros.

Clases
class	PrivateData
Métodos públicos
	QwtDynGridLayout (QWidget *, int margin=0, int space=-1)
	QwtDynGridLayout (QLayout *, int space=-1)
	QwtDynGridLayout (int space=-1)
virtual	~QwtDynGridLayout ()
	Destructor.
virtual void	invalidate ()
void	setMaxCols (uint maxCols)
uint	maxCols () const
uint	numRows () const
uint	numCols () const
virtual void	addItem (QLayoutItem *)
	Adds item to the next free position.
virtual QLayoutIterator	iterator ()
void	setExpanding (QSizePolicy::ExpandData)
virtual QSizePolicy::ExpandData	expanding () const
QValueList< QRect >	layoutItems (const QRect &, uint numCols) const
virtual int	maxItemWidth () const
virtual void	setGeometry (const QRect &rect)
virtual bool	hasHeightForWidth () const
virtual int	heightForWidth (int) const
virtual QSize	sizeHint () const
virtual bool	isEmpty () const
uint	itemCount () const
virtual uint	columnsForWidth (int width) const
Métodos protegidos
void	layoutGrid (uint numCols, QwtArray< int > &rowHeight, QwtArray< int > &colWidth) const
void	stretchGrid (const QRect &rect, uint numCols, QwtArray< int > &rowHeight, QwtArray< int > &colWidth) const

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Descripción detallada

The QwtDynGridLayout class lays out widgets in a grid, adjusting the number of columns and rows to the current size.

QwtDynGridLayout takes the space it gets, divides it up into rows and columns, and puts each of the widgets it manages into the correct cell(s). It lays out as many number of columns as possible (limited by maxCols()).

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Documentación del constructor y destructor

QwtDynGridLayout::QwtDynGridLayout	(	QWidget *	parent,
		int	margin = 0,
		int	spacing = -1
	)		[explicit]

Parámetros:

parent	Parent widget
margin	Margin
spacing	Spacing

QwtDynGridLayout::QwtDynGridLayout	(	QLayout *	parent,
		int	spacing = -1
	)		[explicit]

Parámetros:

parent	Parent widget
spacing	Spacing

QwtDynGridLayout::QwtDynGridLayout

(

int

spacing = -1

)

[explicit]

Parámetros:

spacing

Spacing

QwtDynGridLayout::~QwtDynGridLayout

(

)

[virtual]

Destructor.

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Documentación de las funciones miembro

void QwtDynGridLayout::addItem

(

QLayoutItem *

item

)

[virtual]

Adds item to the next free position.

Implementa QLayout.

uint QwtDynGridLayout::columnsForWidth

(

int

width

)

const [virtual]

Calculate the number of columns for a given width. It tries to use as many columns as possible (limited by maxCols())

Parámetros:

width

Available width for all columns

Ver también:

QwtDynGridLayout::maxCols(), QwtDynGridLayout::setMaxCols()

QSizePolicy::ExpandData QwtDynGridLayout::expanding

(

)

const [virtual]

Returns whether this layout can make use of more space than sizeHint(). A value of Vertical or Horizontal means that it wants to grow in only one dimension, while BothDirections means that it wants to grow in both dimensions.

Ver también:

QwtDynGridLayout::setExpanding()

Reimplementado de QLayout.

bool QwtDynGridLayout::hasHeightForWidth

(

)

const [virtual]

Devuelve:

true: QwtDynGridLayout implements heightForWidth.

Ver también:

QwtDynGridLayout::heightForWidth()

Reimplementado de QLayoutItem.

int QwtDynGridLayout::heightForWidth

(

int

width

)

const [virtual]

Devuelve:

The preferred height for this layout, given the width w.

Ver también:

QwtDynGridLayout::hasHeightForWidth()

Reimplementado de QLayoutItem.

void QwtDynGridLayout::invalidate

(

)

[virtual]

Invalidates cached information. Reimplementations must call this.

Reimplementado de QLayout.

bool QwtDynGridLayout::isEmpty

(

void

)

const [virtual]

Devuelve:

true if this layout is empty.

Reimplementado de QLayout.

uint QwtDynGridLayout::itemCount

(

)

const

Devuelve:

number of layout items

QLayoutIterator QwtDynGridLayout::iterator

(

)

[virtual]

Devuelve:

An iterator over the children of this layout.

Implementa QLayout.

void QwtDynGridLayout::layoutGrid	(	uint	numCols,
		QwtArray< int > &	rowHeight,
		QwtArray< int > &	colWidth
	)		const [protected]

Calculate the dimensions for the columns and rows for a grid of numCols columns.

Parámetros:

numCols	Number of columns.
rowHeight	Array where to fill in the calculated row heights.
colWidth	Array where to fill in the calculated column widths.

QValueList< QRect > QwtDynGridLayout::layoutItems	(	const QRect &	rect,
		uint	numCols
	)		const

Calculate the geometries of the layout items for a layout with numCols columns and a given rect.

Parámetros:

rect	Rect where to place the items
numCols	Number of columns

Devuelve:

item geometries

uint QwtDynGridLayout::maxCols

(

)

const

Return the upper limit for the number of columns. 0 means unlimited, what is the default.

Ver también:

QwtDynGridLayout::setMaxCols()

int QwtDynGridLayout::maxItemWidth

(

)

const [virtual]

Devuelve:

the maximum width of all layout items

uint QwtDynGridLayout::numCols

(

)

const

Devuelve:

Number of columns of the current layout.

Ver también:

QwtDynGridLayout::numRows

Atención:

The number of columns might change whenever the geometry changes

uint QwtDynGridLayout::numRows

(

)

const

Devuelve:

Number of rows of the current layout.

Ver también:

QwtDynGridLayout::numCols

Atención:

The number of rows might change whenever the geometry changes

void QwtDynGridLayout::setExpanding

(

QSizePolicy::ExpandData

expanding

)

Set whether this layout can make use of more space than sizeHint(). A value of Vertical or Horizontal means that it wants to grow in only one dimension, while BothDirections means that it wants to grow in both dimensions. The default value is NoDirection.

Ver también:

QwtDynGridLayout::expanding()

void QwtDynGridLayout::setGeometry

(

const QRect &

rect

)

[virtual]

Reorganizes columns and rows and resizes managed widgets within the rectangle rect.

Implementa QLayout.

void QwtDynGridLayout::setMaxCols

(

uint

maxCols

)

Limit the number of columns.

Parámetros:

maxCols

upper limit, 0 means unlimited

Ver también:

QwtDynGridLayout::maxCols()

QSize QwtDynGridLayout::sizeHint

(

)

const [virtual]

Return the size hint. If maxCols() > 0 it is the size for a grid with maxCols() columns, otherwise it is the size for a grid with only one row.

Ver también:

QwtDynGridLayout::maxCols(), QwtDynGridLayout::setMaxCols()

Implementa QLayoutItem.

void QwtDynGridLayout::stretchGrid	(	const QRect &	rect,
		uint	numCols,
		QwtArray< int > &	rowHeight,
		QwtArray< int > &	colWidth
	)		const [protected]

Stretch columns in case of expanding() & QSizePolicy::Horizontal and rows in case of expanding() & QSizePolicy::Vertical to fill the entire rect. Rows and columns are stretched with the same factor.

Ver también:

QwtDynGridLayout::setExpanding(), QwtDynGridLayout::expanding()

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

• src/qwt/src/qwt_dyngrid_layout.h
• src/qwt/src/qwt_dyngrid_layout.cpp