QwtDynGridLayout Class Reference

Dynamic grid layout that adjusts columns and rows to the current size. More...

#include <qwt_dyngrid_layout.h>

Inheritance diagram for QwtDynGridLayout:

Classes
class	PrivateData

Public Member Functions
	QwtDynGridLayout (QWidget *, int margin=0, int spacing=-1)
	Constructor with parent widget, margin and spacing.
	QwtDynGridLayout (int spacing=-1)
	Constructor with spacing only.
virtual	~QwtDynGridLayout ()
	Destructor.
virtual void	invalidate () override
	Invalidate all internal caches.
void	setMaxColumns (uint maxColumns)
	Set the upper limit for the number of columns.
uint	maxColumns () const
	Get the upper limit for the number of columns.
uint	numRows () const
	Get the number of rows in the current layout.
uint	numColumns () const
	Get the number of columns in the current layout.
virtual void	addItem (QLayoutItem *) override
	Add an item to the next free position.
virtual QLayoutItem *	itemAt (int index) const override
	Get the item at a specific index.
virtual QLayoutItem *	takeAt (int index) override
	Remove and return the item at a specific index.
virtual int	count () const override
	Get the number of items in the layout.
void	setExpandingDirections (Qt::Orientations)
	Set the expanding directions for the layout.
virtual Qt::Orientations	expandingDirections () const override
	Get the expanding directions for the layout.
QList< QRect >	layoutItems (const QRect &, uint numColumns) const
	Calculate the geometries of the layout items.
virtual int	maxItemWidth () const
	Get the maximum width of all layout items.
virtual void	setGeometry (const QRect &) override
	Set the geometry for the layout.
virtual bool	hasHeightForWidth () const override
	Check if the layout has height for width.
virtual int	heightForWidth (int) const override
	Get the preferred height for a given width.
virtual QSize	sizeHint () const override
	Get the size hint for the layout.
virtual bool	isEmpty () const override
	Check if the layout is empty.
uint	itemCount () const
	Get the number of layout items.
virtual uint	columnsForWidth (int width) const
	Calculate the number of columns for a given width.

Protected Member Functions
void	layoutGrid (uint numColumns, QVector< int > &rowHeight, QVector< int > &colWidth) const
	Calculate the dimensions for the columns and rows for a grid of numColumns columns.
void	stretchGrid (const QRect &rect, uint numColumns, QVector< int > &rowHeight, QVector< int > &colWidth) const
	Stretch columns in case of expanding() & QSizePolicy::Horizontal and rows in case of expanding() & QSizePolicy::Vertical to fill the entire rect.

Detailed Description

Dynamic grid layout that adjusts columns and rows to the current size.

Constructor & Destructor Documentation

QwtDynGridLayout() [1/2]

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

explicit

Constructor with parent widget, margin and spacing.

QwtDynGridLayout() [2/2]

QwtDynGridLayout::QwtDynGridLayout ( int  spacing = -1 )

explicit

Constructor with spacing only.

~QwtDynGridLayout()

QwtDynGridLayout::~QwtDynGridLayout ( )

virtual

Destructor.

Member Function Documentation

addItem()

void QwtDynGridLayout::addItem ( QLayoutItem *  item )

overridevirtual

Add an item to the next free position.

columnsForWidth()

uint QwtDynGridLayout::columnsForWidth ( int  width ) const

virtual

Calculate the number of columns for a given width.

count()

int QwtDynGridLayout::count ( ) const

overridevirtual

Get the number of items in the layout.

expandingDirections()

Qt::Orientations QwtDynGridLayout::expandingDirections ( ) const

overridevirtual

Get the expanding directions for the layout.

hasHeightForWidth()

bool QwtDynGridLayout::hasHeightForWidth ( ) const

overridevirtual

Check if the layout has height for width.

heightForWidth()

int QwtDynGridLayout::heightForWidth ( int  width ) const

overridevirtual

Get the preferred height for a given width.

invalidate()

void QwtDynGridLayout::invalidate ( )

overridevirtual

Invalidate all internal caches.

isEmpty()

bool QwtDynGridLayout::isEmpty ( ) const

overridevirtual

Check if the layout is empty.

itemAt()

QLayoutItem * QwtDynGridLayout::itemAt ( int  index ) const

overridevirtual

Get the item at a specific index.

itemCount()

uint QwtDynGridLayout::itemCount

(

)

const

Get the number of layout items.

layoutGrid()

void QwtDynGridLayout::layoutGrid ( uint  numColumns, QVector< int > &  rowHeight, QVector< int > &  colWidth  ) const

protected

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

Parameters

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

layoutItems()

QList< QRect > QwtDynGridLayout::layoutItems	(	const QRect &	rect,
		uint	numColumns
	)		const

Calculate the geometries of the layout items.

maxColumns()

uint QwtDynGridLayout::maxColumns

(

)

const

Get the upper limit for the number of columns.

maxItemWidth()

int QwtDynGridLayout::maxItemWidth ( ) const

virtual

Get the maximum width of all layout items.

numColumns()

uint QwtDynGridLayout::numColumns

(

)

const

Get the number of columns in the current layout.

numRows()

uint QwtDynGridLayout::numRows

(

)

const

Get the number of rows in the current layout.

setExpandingDirections()

void QwtDynGridLayout::setExpandingDirections

(

Qt::Orientations

expanding

)

Set the expanding directions for the layout.

setGeometry()

void QwtDynGridLayout::setGeometry ( const QRect &  rect )

overridevirtual

Set the geometry for the layout.

setMaxColumns()

void QwtDynGridLayout::setMaxColumns

(

uint

maxColumns

)

Set the upper limit for the number of columns.

sizeHint()

QSize QwtDynGridLayout::sizeHint ( ) const

overridevirtual

Get the size hint for the layout.

stretchGrid()

void QwtDynGridLayout::stretchGrid ( const QRect &  rect, uint  numColumns, QVector< int > &  rowHeight, QVector< 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.

Parameters

rect	Bounding rectangle
numColumns	Number of columns
rowHeight	Array to be filled with the calculated row heights
colWidth	Array to be filled with the calculated column widths

See also

setExpanding(), expanding()

takeAt()

QLayoutItem * QwtDynGridLayout::takeAt ( int  index )

overridevirtual

Remove and return the item at a specific index.

---

The documentation for this class was generated from the following files:

• /home/runner/work/QWT/QWT/src/plot/qwt_dyngrid_layout.h
• /home/runner/work/QWT/QWT/src/plot/qwt_dyngrid_layout.cpp