Rechercher une page de manuel
QwtDynGridLayout
Langue: en
Version: 377882 (fedora - 01/12/10)
Section: 3 (Bibliothèques de fonctions)
Sommaire
- NAME
- SYNOPSIS
- Detailed Description
- Constructor & Destructor Documentation
- Member Function Documentation
- void QwtDynGridLayout::addItem (QLayoutItem * item) [virtual]
- 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())
- int QwtDynGridLayout::count () const [virtual]Returns:
- Qt::Orientations QwtDynGridLayout::expandingDirections () const [virtual]Returns whether this layout can make use of more space than sizeHint(). A value of Qt::Vertical or Qt::Horizontal means that it wants to grow in only one dimension, while Qt::Vertical | Qt::Horizontal means that it wants to grow in both dimensions.
- bool QwtDynGridLayout::hasHeightForWidth () const [virtual]Returns:
- int QwtDynGridLayout::heightForWidth (int width) const [virtual]Returns:
- void QwtDynGridLayout::invalidate () [virtual]
- bool QwtDynGridLayout::isEmpty () const [virtual]Returns:
- QLayoutItem * QwtDynGridLayout::itemAt (int index) const [virtual]Find the item at a spcific index
- uint QwtDynGridLayout::itemCount () constReturns:
- 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.
- QList< QRect > QwtDynGridLayout::layoutItems (const QRect & rect, uint numCols) constCalculate the geometries of the layout items for a layout with numCols columns and a given rect.
- uint QwtDynGridLayout::maxCols () constReturn the upper limit for the number of columns. 0 means unlimited, what is the default.
- int QwtDynGridLayout::maxItemWidth () const [virtual]Returns:
- uint QwtDynGridLayout::numCols () constReturns:
- uint QwtDynGridLayout::numRows () constReturns:
- void QwtDynGridLayout::setExpandingDirections (Qt::Orientations expanding)Set whether this layout can make use of more space than sizeHint(). A value of Qt::Vertical or Qt::Horizontal means that it wants to grow in only one dimension, while Qt::Vertical | Qt::Horizontal means that it wants to grow in both dimensions. The default value is 0.
- void QwtDynGridLayout::setGeometry (const QRect & rect) [virtual]Reorganizes columns and rows and resizes managed widgets within the rectangle rect.
- void QwtDynGridLayout::setMaxCols (uint maxCols)Limit the number of columns.
- 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.
- 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.
- QLayoutItem * QwtDynGridLayout::takeAt (int index) [virtual]Find the item at a spcific index and remove it from the layout
- Author
NAME
QwtDynGridLayout -The QwtDynGridLayout class lays out widgets in a grid, adjusting the number of columns and rows to the current size.
SYNOPSIS
#include <qwt_dyngrid_layout.h>
Public Member Functions
QwtDynGridLayout (QWidget *, int margin=0, int space=-1)
QwtDynGridLayout (int space=-1)
virtual ~QwtDynGridLayout ()
virtual void invalidate ()
void setMaxCols (uint maxCols)
uint maxCols () const
uint numRows () const
uint numCols () const
virtual void addItem (QLayoutItem *)
virtual QLayoutItem * itemAt (int index) const
virtual QLayoutItem * takeAt (int index)
virtual int count () const
void setExpandingDirections (Qt::Orientations)
virtual Qt::Orientations expandingDirections () const
QList< 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
Protected Member Functions
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
Detailed Description
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()).
Constructor & Destructor Documentation
QwtDynGridLayout::QwtDynGridLayout (QWidget * parent, int margin = 0, int spacing = -1) [explicit]Parameters:
- parent Parent widget
margin Margin
spacing Spacing
QwtDynGridLayout::QwtDynGridLayout (int spacing = -1) [explicit]Parameters:
- spacing Spacing
QwtDynGridLayout::~QwtDynGridLayout () [virtual]
Destructor.
Member Function Documentation
void QwtDynGridLayout::addItem (QLayoutItem * item) [virtual]
Adds item to the next free position.
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())
Parameters:
- width Available width for all columns
See also:
- maxCols(), setMaxCols()
int QwtDynGridLayout::count () const [virtual]Returns:
- Number of items in the layout
Qt::Orientations QwtDynGridLayout::expandingDirections () const [virtual]Returns whether this layout can make use of more space than sizeHint(). A value of Qt::Vertical or Qt::Horizontal means that it wants to grow in only one dimension, while Qt::Vertical | Qt::Horizontal means that it wants to grow in both dimensions.
See also:
- setExpandingDirections()
bool QwtDynGridLayout::hasHeightForWidth () const [virtual]Returns:
- true: QwtDynGridLayout implements heightForWidth.
See also:
- heightForWidth()
int QwtDynGridLayout::heightForWidth (int width) const [virtual]Returns:
- The preferred height for this layout, given the width w.
See also:
- hasHeightForWidth()
void QwtDynGridLayout::invalidate () [virtual]
Invalidate all internal caches.
bool QwtDynGridLayout::isEmpty () const [virtual]Returns:
- true if this layout is empty.
QLayoutItem * QwtDynGridLayout::itemAt (int index) const [virtual]Find the item at a spcific index
Parameters:
- index Index
See also:
- takeAt()
uint QwtDynGridLayout::itemCount () constReturns:
- number of layout items
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.
Parameters:
- numCols Number of columns.
rowHeight Array where to fill in the calculated row heights.
colWidth Array where to fill in the calculated column widths.
QList< QRect > QwtDynGridLayout::layoutItems (const QRect & rect, uint numCols) constCalculate the geometries of the layout items for a layout with numCols columns and a given rect.
Parameters:
- rect Rect where to place the items
numCols Number of columns
Returns:
- item geometries
uint QwtDynGridLayout::maxCols () constReturn the upper limit for the number of columns. 0 means unlimited, what is the default.
See also:
- setMaxCols()
int QwtDynGridLayout::maxItemWidth () const [virtual]Returns:
- the maximum width of all layout items
uint QwtDynGridLayout::numCols () constReturns:
- Number of columns of the current layout.
See also:
- numRows()
Warning:
- The number of columns might change whenever the geometry changes
uint QwtDynGridLayout::numRows () constReturns:
- Number of rows of the current layout.
See also:
- numCols()
Warning:
- The number of rows might change whenever the geometry changes
void QwtDynGridLayout::setExpandingDirections (Qt::Orientations expanding)Set whether this layout can make use of more space than sizeHint(). A value of Qt::Vertical or Qt::Horizontal means that it wants to grow in only one dimension, while Qt::Vertical | Qt::Horizontal means that it wants to grow in both dimensions. The default value is 0.
Parameters:
- expanding Or'd orientations
See also:
- expandingDirections()
void QwtDynGridLayout::setGeometry (const QRect & rect) [virtual]Reorganizes columns and rows and resizes managed widgets within the rectangle rect.
Parameters:
- rect Layout geometry
void QwtDynGridLayout::setMaxCols (uint maxCols)Limit the number of columns.
Parameters:
- maxCols upper limit, 0 means unlimited
See also:
- 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.
See also:
- maxCols(), setMaxCols()
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.
See also:
- setExpanding(), expanding()
QLayoutItem * QwtDynGridLayout::takeAt (int index) [virtual]Find the item at a spcific index and remove it from the layout
Parameters:
- index Index
See also:
- itemAt()
Author
Generated automatically by Doxygen for Qwt User's Guide from the source code.
Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre