qwtdyngridlayout.3

linux下qt的第三方的一个类

.TH "QwtDynGridLayout" 3 "16 Nov 2004" "Version 4.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtDynGridLayout \- 
.SH SYNOPSIS
.br
.PP
.SH "Detailed Description"
.PP 
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 \fBmaxCols()\fP). 
.PP
Definition at line 30 of file qwt_dyngrid_layout.h.
.SS "Public Member Functions"

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.RI "\fBQwtDynGridLayout\fP (QWidget *, int margin=0, int space=-1, const char *name=0)"
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.RI "\fBQwtDynGridLayout\fP (QLayout *, int space=-1, const char *name=0)"
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.RI "\fBQwtDynGridLayout\fP (int space=-1, const char *name=0)"
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.RI "virtual \fB~QwtDynGridLayout\fP ()"
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.RI "virtual void \fBinvalidate\fP ()"
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.RI "void \fBsetMaxCols\fP (uint maxCols)"
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.RI "uint \fBmaxCols\fP () const"
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.RI "uint \fBnumRows\fP () const"
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.RI "uint \fBnumCols\fP () const"
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.RI "virtual void \fBaddItem\fP (QLayoutItem *)"
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.RI "virtual QLayoutIterator \fBiterator\fP ()"
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.RI "virtual int \fBmaxItemWidth\fP () const"
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.RI "virtual void \fBsetGeometry\fP (const QRect &rect)"
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.RI "virtual bool \fBhasHeightForWidth\fP () const"
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.RI "virtual int \fBheightForWidth\fP (int) const"
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.RI "virtual QSize \fBsizeHint\fP () const"
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.RI "void \fBsetExpanding\fP (QSizePolicy::ExpandData)"
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.RI "virtual QSizePolicy::ExpandData \fBexpanding\fP () const"
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.RI "virtual bool \fBisEmpty\fP () const"
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.RI "uint \fBitemCount\fP () const"
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.RI "virtual uint \fBcolumnsForWidth\fP (int width) const"
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.RI "QValueList< QRect > \fBlayoutItems\fP (const QRect &, uint numCols) const"
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.SS "Protected Member Functions"

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.RI "void \fBlayoutGrid\fP (uint numCols, QwtArray< int > &rowHeight, QwtArray< int > &colWidth) const"
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.RI "void \fBstretchGrid\fP (const QRect &rect, uint numCols, QwtArray< int > &rowHeight, QwtArray< int > &colWidth) const"
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.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtDynGridLayout::QwtDynGridLayout (QWidget * parent, int margin = \fC0\fP, int space = \fC-1\fP, const char * name = \fC0\fP)"
.PP
\fBParameters:\fP
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\fIparent\fP Parent widget 
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\fImargin\fP Margin 
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\fIspace\fP Spacing 
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\fIname\fP Widget name 
.RE
.PP
Definition at line 79 of file qwt_dyngrid_layout.cpp.
.SS "QwtDynGridLayout::QwtDynGridLayout (QLayout * parent, int space = \fC-1\fP, const char * name = \fC0\fP)"
.PP
\fBParameters:\fP
.RS 4
\fIparent\fP Parent widget 
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\fIspace\fP Spacing 
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\fIname\fP Widget name 
.RE
.PP
Definition at line 92 of file qwt_dyngrid_layout.cpp.
.SS "QwtDynGridLayout::QwtDynGridLayout (int space = \fC-1\fP, const char * name = \fC0\fP)"
.PP
\fBParameters:\fP
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\fIspace\fP Spacing 
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\fIname\fP Widget name 
.RE
.PP
Definition at line 104 of file qwt_dyngrid_layout.cpp.
.SS "QwtDynGridLayout::~\fBQwtDynGridLayout\fP ()\fC [virtual]\fP"
.PP
Destructor. 
.PP
Definition at line 124 of file qwt_dyngrid_layout.cpp.
.SH "Member Function Documentation"
.PP 
.SS "void QwtDynGridLayout::addItem (QLayoutItem *)\fC [virtual]\fP"
.PP
Adds item to the next free position. 
.PP
Definition at line 176 of file qwt_dyngrid_layout.cpp.
.SS "uint QwtDynGridLayout::columnsForWidth (int width) const\fC [virtual]\fP"
.PP
Calculate the number of columns for a given width. It tries to use as many columns as possible (limited by \fBmaxCols()\fP)
.PP
\fBParameters:\fP
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\fIwidth\fP Available width for all columns 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBQwtDynGridLayout::maxCols()\fP, \fBQwtDynGridLayout::setMaxCols()\fP 
.RE
.PP
Definition at line 252 of file qwt_dyngrid_layout.cpp.
.PP
References isEmpty(), itemCount(), maxCols(), and numCols().
.PP
Referenced by heightForWidth(), QwtPlot::printLegend(), and setGeometry().
.SS "QSizePolicy::ExpandData QwtDynGridLayout::expanding () const\fC [virtual]\fP"
.PP
Returns whether this layout can make use of more space than \fBsizeHint()\fP. 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. 
.PP
\fBSee also:\fP
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\fBQwtDynGridLayout::setExpanding()\fP 
.RE
.PP
Definition at line 456 of file qwt_dyngrid_layout.cpp.
.PP
Referenced by layoutItems(), and stretchGrid().
.SS "bool QwtDynGridLayout::hasHeightForWidth () const\fC [virtual]\fP"
.PP
\fBReturns:\fP
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TRUE: QwtDynGridLayout implements heightForWidth. 
.RE
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\fBSee also:\fP
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\fBQwtDynGridLayout::heightForWidth()\fP 
.RE
.PP
Definition at line 466 of file qwt_dyngrid_layout.cpp.
.SS "int QwtDynGridLayout::heightForWidth (int width) const\fC [virtual]\fP"
.PP
\fBReturns:\fP
.RS 4
The preferred height for this layout, given the width w. 
.RE
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\fBSee also:\fP
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\fBQwtDynGridLayout::hasHeightForWidth()\fP 
.RE
.PP
Definition at line 476 of file qwt_dyngrid_layout.cpp.
.PP
References columnsForWidth(), isEmpty(), itemCount(), layoutGrid(), numCols(), and numRows().
.PP
Referenced by QwtLegend::layoutContents().
.SS "bool QwtDynGridLayout::isEmpty () const\fC [virtual]\fP"
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\fBReturns:\fP
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TRUE if this layout is empty. 
.RE
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Definition at line 186 of file qwt_dyngrid_layout.cpp.
.PP
Referenced by columnsForWidth(), heightForWidth(), layoutItems(), maxItemWidth(), setGeometry(), sizeHint(), and stretchGrid().
.SS "uint QwtDynGridLayout::itemCount () const"
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\fBReturns:\fP
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number of layout items 
.RE
.PP
Definition at line 195 of file qwt_dyngrid_layout.cpp.
.PP
Referenced by columnsForWidth(), heightForWidth(), layoutItems(), setGeometry(), sizeHint(), and stretchGrid().
.SS "QLayoutIterator QwtDynGridLayout::iterator ()\fC [virtual]\fP"
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\fBReturns:\fP
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An iterator over the children of this layout. 
.RE
.PP
Definition at line 204 of file qwt_dyngrid_layout.cpp.
.PP
Referenced by QwtPlot::printLegend().
.SS "void QwtDynGridLayout::layoutGrid (uint numCols, QwtArray< int > & rowHeight, QwtArray< int > & colWidth) const\fC [protected]\fP"
.PP
Calculate the dimensions for the columns and rows for a grid of numCols columns. 
.PP
\fBParameters:\fP
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\fInumCols\fP Number of columns. 
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\fIrowHeight\fP Array where to fill in the calculated row heights. 
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\fIcolWidth\fP Array where to fill in the calculated column widths. 
.RE
.PP
Definition at line 411 of file qwt_dyngrid_layout.cpp.
.PP
Referenced by heightForWidth(), layoutItems(), and sizeHint().
.SS "QValueList< QRect > QwtDynGridLayout::layoutItems (const QRect & rect, uint numCols) const"
.PP
Calculate the geometries of the layout items for a layout with numCols columns and a given rect. 
.PP
\fBParameters:\fP
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\fIrect\fP Rect where to place the items 
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\fInumCols\fP Number of columns 
.RE
.PP
\fBReturns:\fP
.RS 4
item geometries 
.RE
.PP
Definition at line 335 of file qwt_dyngrid_layout.cpp.
.PP
References d_maxCols, expanding(), isEmpty(), itemCount(), layoutGrid(), maxCols(), numRows(), and stretchGrid().
.PP
Referenced by QwtPlot::printLegend(), and setGeometry().
.SS "uint QwtDynGridLayout::maxCols () const"
.PP
Return the upper limit for the number of columns. 0 means unlimited, what is the default. 
.PP
\fBSee also:\fP
.RS 4
\fBQwtDynGridLayout::setMaxCols()\fP 
.RE
.PP
Definition at line 169 of file qwt_dyngrid_layout.cpp.
.PP
Referenced by columnsForWidth(), and layoutItems().
.SS "int QwtDynGridLayout::maxItemWidth () const\fC [virtual]\fP"
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\fBReturns:\fP
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the maximum width of all layout items 
.RE
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Definition at line 308 of file qwt_dyngrid_layout.cpp.
.PP
References isEmpty().
.PP
Referenced by QwtLegend::layoutContents().
.SS "uint QwtDynGridLayout::numCols () const"
.PP
\fBReturns:\fP
.RS 4
Number of columns of the current layout. 
.RE
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\fBSee also:\fP
.RS 4
\fBQwtDynGridLayout::numRows\fP 
.RE
.PP
\fBWarning:\fP
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The number of columns might change whenever the geometry changes 
.RE
.PP
Definition at line 606 of file qwt_dyngrid_layout.cpp.
.PP
Referenced by columnsForWidth(), heightForWidth(), and sizeHint().
.SS "uint QwtDynGridLayout::numRows () const"
.PP
\fBReturns:\fP
.RS 4
Number of rows of the current layout. 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBQwtDynGridLayout::numCols\fP 
.RE
.PP
\fBWarning:\fP
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The number of rows might change whenever the geometry changes 
.RE
.PP
Definition at line 596 of file qwt_dyngrid_layout.cpp.
.PP
Referenced by heightForWidth(), layoutItems(), sizeHint(), and stretchGrid().
.SS "void QwtDynGridLayout::setExpanding (QSizePolicy::ExpandData expanding)"
.PP
Set whether this layout can make use of more space than \fBsizeHint()\fP. 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. 
.PP
\fBSee also:\fP
.RS 4
\fBQwtDynGridLayout::expanding()\fP 
.RE
.PP
Definition at line 443 of file qwt_dyngrid_layout.cpp.
.SS "void QwtDynGridLayout::setGeometry (const QRect & rect)\fC [virtual]\fP"
.PP
Reorganizes columns and rows and resizes managed widgets within the rectangle rect. Definition at line 215 of file qwt_dyngrid_layout.cpp.
.PP
References columnsForWidth(), isEmpty(), itemCount(), and layoutItems().
.SS "void QwtDynGridLayout::setMaxCols (uint maxCols)"
.PP
Limit the number of columns. 
.PP
\fBParameters:\fP
.RS 4
\fImaxCols\fP upper limit, 0 means unlimited 
.RE
.PP
\fBSee also:\fP
.RS 4
\fBQwtDynGridLayout::maxCols()\fP 
.RE
.PP
Definition at line 158 of file qwt_dyngrid_layout.cpp.
.PP
Referenced by QwtPlot::setLegendPosition().
.SS "QSize QwtDynGridLayout::sizeHint () const\fC [virtual]\fP"
.PP
Return the size hint. If \fBmaxCols()\fP > 0 it is the size for a grid with \fBmaxCols()\fP columns, otherwise it is the size for a grid with only one row. 
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\fBSee also:\fP
.RS 4
\fBQwtDynGridLayout::maxCols()\fP, \fBQwtDynGridLayout::setMaxCols()\fP 
.RE
.PP
Definition at line 565 of file qwt_dyngrid_layout.cpp.
.PP
References isEmpty(), itemCount(), layoutGrid(), numCols(), and numRows().
.SS "void QwtDynGridLayout::stretchGrid (const QRect & rect, uint numCols, QwtArray< int > & rowHeight, QwtArray< int > & colWidth) const\fC [protected]\fP"
.PP
Stretch columns in case of \fBexpanding()\fP & QSizePolicy::Horizontal and rows in case of \fBexpanding()\fP & QSizePolicy::Vertical to fill the entire rect. Rows and columns are stretched with the same factor. 
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\fBSee also:\fP
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\fBQwtDynGridLayout::setExpanding()\fP, \fBQwtDynGridLayout::expanding()\fP 
.RE
.PP
Definition at line 505 of file qwt_dyngrid_layout.cpp.
.PP
References expanding(), isEmpty(), itemCount(), and numRows().
.PP
Referenced by layoutItems().

.SH "Author"
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