.TH "QwtCompass" 3 "Mon Dec 28 2020" "Version 6.1.6" "Qwt User's Guide" \" -*- nroff -*-
.ad l
.nh
.SH NAME
QwtCompass \- A Compass Widget\&.  

.SH SYNOPSIS
.br
.PP
.PP
\fC#include <qwt_compass\&.h>\fP
.PP
Inherits \fBQwtDial\fP\&.
.SS "Public Member Functions"

.in +1c
.ti -1c
.RI "\fBQwtCompass\fP (QWidget *parent=NULL)"
.br
.RI "Constructor\&. "
.ti -1c
.RI "virtual \fB~QwtCompass\fP ()"
.br
.RI "Destructor\&. "
.ti -1c
.RI "void \fBsetRose\fP (\fBQwtCompassRose\fP *\fBrose\fP)"
.br
.ti -1c
.RI "const \fBQwtCompassRose\fP * \fBrose\fP () const"
.br
.ti -1c
.RI "\fBQwtCompassRose\fP * \fBrose\fP ()"
.br
.in -1c
.SS "Protected Member Functions"

.in +1c
.ti -1c
.RI "virtual void \fBdrawRose\fP (QPainter *, const QPointF &center, double radius, double north, QPalette::ColorGroup) const"
.br
.ti -1c
.RI "virtual void \fBdrawScaleContents\fP (QPainter *, const QPointF &center, double radius) const"
.br
.ti -1c
.RI "virtual void \fBkeyPressEvent\fP (QKeyEvent *)"
.br
.in -1c
.SS "Additional Inherited Members"
.SH "Detailed Description"
.PP 
A Compass Widget\&. 

\fBQwtCompass\fP is a widget to display and enter directions\&. It consists of a scale, an optional needle and rose\&.
.PP
.PP
\fBNote\fP
.RS 4
The examples/dials example shows how to use \fBQwtCompass\fP\&. 
.RE
.PP

.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtCompass::QwtCompass (QWidget * parent = \fCNULL\fP)\fC [explicit]\fP"

.PP
Constructor\&. 
.PP
\fBParameters\fP
.RS 4
\fIparent\fP Parent widget
.RE
.PP
Create a compass widget with a scale, no needle and no rose\&. The default origin is 270\&.0 with no valid value\&. It accepts mouse and keyboard inputs and has no step size\&. The default mode is \fBQwtDial::RotateNeedle\fP\&. 
.SH "Member Function Documentation"
.PP 
.SS "void QwtCompass::drawRose (QPainter * painter, const QPointF & center, double radius, double north, QPalette::ColorGroup cg) const\fC [protected]\fP, \fC [virtual]\fP"
Draw the compass rose
.PP
\fBParameters\fP
.RS 4
\fIpainter\fP Painter 
.br
\fIcenter\fP Center of the compass 
.br
\fIradius\fP of the circle, where to paint the rose 
.br
\fInorth\fP Direction pointing north, in degrees counter clockwise 
.br
\fIcg\fP Color group 
.RE
.PP

.SS "void QwtCompass::drawScaleContents (QPainter * painter, const QPointF & center, double radius) const\fC [protected]\fP, \fC [virtual]\fP"
Draw the contents of the scale
.PP
\fBParameters\fP
.RS 4
\fIpainter\fP Painter 
.br
\fIcenter\fP Center of the content circle 
.br
\fIradius\fP Radius of the content circle 
.RE
.PP

.PP
Reimplemented from \fBQwtDial\fP\&.
.SS "void QwtCompass::keyPressEvent (QKeyEvent * kev)\fC [protected]\fP, \fC [virtual]\fP"
Handles key events
.PP
Beside the keys described in \fBQwtDial::keyPressEvent\fP numbers from 1-9 (without 5) set the direction according to their position on the num pad\&.
.PP
\fBSee also\fP
.RS 4
\fBisReadOnly()\fP 
.RE
.PP

.PP
Reimplemented from \fBQwtAbstractSlider\fP\&.
.SS "\fBQwtCompassRose\fP * QwtCompass::rose ()"

.PP
\fBReturns\fP
.RS 4
rose 
.RE
.PP
\fBSee also\fP
.RS 4
\fBsetRose()\fP 
.RE
.PP

.SS "const \fBQwtCompassRose\fP * QwtCompass::rose () const"

.PP
\fBReturns\fP
.RS 4
rose 
.RE
.PP
\fBSee also\fP
.RS 4
\fBsetRose()\fP 
.RE
.PP

.SS "void QwtCompass::setRose (\fBQwtCompassRose\fP * rose)"
Set a rose for the compass 
.PP
\fBParameters\fP
.RS 4
\fIrose\fP Compass rose 
.RE
.PP
\fBWarning\fP
.RS 4
The rose will be deleted, when a different rose is set or in ~QwtCompass 
.RE
.PP
\fBSee also\fP
.RS 4
\fBrose()\fP 
.RE
.PP


.SH "Author"
.PP 
Generated automatically by Doxygen for Qwt User's Guide from the source code\&.