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QwtDynGridLayout(3)            Qwt User's Guide            QwtDynGridLayout(3)

NAME

QwtDynGridLayout -

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 addItem (QLayoutItem *) virtual uint columnsForWidth (int width) const virtual int count () const virtual Qt::Orientations expandingDirections () const virtual bool hasHeightForWidth () const virtual int heightForWidth (int) const virtual void invalidate () virtual bool isEmpty () const virtual QLayoutItem * itemAt (int index) const uint itemCount () const QList< QRect > layoutItems (const QRect &, uint numCols) const uint maxCols () const virtual int maxItemWidth () const uint numCols () const uint numRows () const void setExpandingDirections (Qt::Orientations) virtual void setGeometry (const QRect &rect) void setMaxCols (uint maxCols) virtual QSize sizeHint () const virtual QLayoutItem * takeAt (int index) 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, intmargin = 0, intspacing = -1) [explicit] Parameters: parent Parent widget margin Margin spacing Spacing QwtDynGridLayout::QwtDynGridLayout (intspacing = -1) [explicit] Parameters: spacing Spacing Member Function Documentation uint QwtDynGridLayout::columnsForWidth (intwidth) 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 (intwidth) const [virtual] Returns: The preferred height for this layout, given the width w. See also: hasHeightForWidth() bool QwtDynGridLayout::isEmpty () const [virtual] Returns: true if this layout is empty. QLayoutItem * QwtDynGridLayout::itemAt (intindex) const [virtual] Find the item at a spcific index Parameters: index Index See also: takeAt() uint QwtDynGridLayout::itemCount () const Returns: number of layout items void QwtDynGridLayout::layoutGrid (uintnumCols, 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, uintnumCols) const Calculate 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 () const Return 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 () const Returns: Number of columns of the current layout. See also: numRows() Warning: The number of columns might change whenever the geometry changes uint QwtDynGridLayout::numRows () const Returns: 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::Orientationsexpanding) 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 (uintmaxCols) 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, uintnumCols, 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 (intindex) [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. Version 5.2.3 Tue Nov 20 2012 QwtDynGridLayout(3)

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