.TH "QwtCompass" 3 "Fri Apr 15 2011" "Version 6.0.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtCompass \- 
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A Compass Widget.  

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

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.RI "\fBQwtCompass\fP (QWidget *parent=NULL)"
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.RI "virtual \fB~QwtCompass\fP ()"
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.RI "void \fBsetRose\fP (\fBQwtCompassRose\fP *rose)"
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.RI "const \fBQwtCompassRose\fP * \fBrose\fP () const "
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.RI "\fBQwtCompassRose\fP * \fBrose\fP ()"
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.RI "const QMap< double, QString > & \fBlabelMap\fP () const "
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.RI "QMap< double, QString > & \fBlabelMap\fP ()"
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.RI "void \fBsetLabelMap\fP (const QMap< double, QString > &map)"
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.SS "Protected Member Functions"

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.RI "virtual \fBQwtText\fP \fBscaleLabel\fP (double value) const "
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.RI "virtual void \fBdrawRose\fP (QPainter *, const QPointF &center, double radius, double north, QPalette::ColorGroup) const "
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.RI "virtual void \fBdrawScaleContents\fP (QPainter *, const QPointF &center, double radius) const "
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.RI "virtual void \fBkeyPressEvent\fP (QKeyEvent *)"
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.SH "Detailed Description"
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A Compass Widget. 

\fBQwtCompass\fP is a widget to display and enter directions. It consists of a scale, an optional needle and rose.
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\fBNote:\fP
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The examples/dials example shows how to use \fBQwtCompass\fP. 
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.SH "Constructor & Destructor Documentation"
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.SS "QwtCompass::QwtCompass (QWidget *parent = \fCNULL\fP)\fC [explicit]\fP"
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Constructor. \fBParameters:\fP
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\fIparent\fP Parent widget
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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. 
.SS "QwtCompass::~QwtCompass ()\fC [virtual]\fP"
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Destructor. 
.SH "Member Function Documentation"
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.SS "void QwtCompass::drawRose (QPainter *painter, const QPointF &center, doubleradius, doublenorth, QPalette::ColorGroupcg) const\fC [protected, virtual]\fP"Draw the compass rose
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\fBParameters:\fP
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\fIpainter\fP Painter 
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\fIcenter\fP Center of the compass 
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\fIradius\fP of the circle, where to paint the rose 
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\fInorth\fP Direction pointing north, in degrees counter clockwise 
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\fIcg\fP Color group 
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.SS "void QwtCompass::drawScaleContents (QPainter *painter, const QPointF &center, doubleradius) const\fC [protected, virtual]\fP"Draw the contents of the scale
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\fBParameters:\fP
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\fIpainter\fP Painter 
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\fIcenter\fP Center of the content circle 
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\fIradius\fP Radius of the content circle 
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Reimplemented from \fBQwtDial\fP.
.SS "void QwtCompass::keyPressEvent (QKeyEvent *kev)\fC [protected, virtual]\fP"Handles key events
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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.
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\fBSee also:\fP
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\fBisReadOnly()\fP 
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Reimplemented from \fBQwtDial\fP.
.SS "QMap< double, QString > & QwtCompass::labelMap ()"\fBReturns:\fP
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map, mapping values to labels 
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\fBSee also:\fP
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\fBsetLabelMap()\fP 
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.SS "const QMap< double, QString > & QwtCompass::labelMap () const"\fBReturns:\fP
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map, mapping values to labels 
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\fBSee also:\fP
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\fBsetLabelMap()\fP 
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.SS "const \fBQwtCompassRose\fP * QwtCompass::rose () const"\fBReturns:\fP
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rose 
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\fBSee also:\fP
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\fBsetRose()\fP 
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.SS "\fBQwtCompassRose\fP * QwtCompass::rose ()"\fBReturns:\fP
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rose 
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\fBSee also:\fP
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\fBsetRose()\fP 
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.SS "\fBQwtText\fP QwtCompass::scaleLabel (doublevalue) const\fC [protected, virtual]\fP"Map a value to a corresponding label 
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\fBParameters:\fP
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\fIvalue\fP Value that will be mapped 
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\fBReturns:\fP
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Label, or QString::null
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label() looks in a map for a corresponding label for value or return an null text. 
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\fBSee also:\fP
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\fBlabelMap()\fP, \fBsetLabelMap()\fP 
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Reimplemented from \fBQwtDial\fP.
.SS "void QwtCompass::setLabelMap (const QMap< double, QString > &map)"
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Set a map, mapping values to labels. \fBParameters:\fP
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\fImap\fP value to label map
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The values of the major ticks are found by looking into this map. The default map consists of the labels N, NE, E, SE, S, SW, W, NW.
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\fBWarning:\fP
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The map will have no effect for values that are no major tick values. Major ticks can be changed by QwtScaleDraw::setScale
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\fBSee also:\fP
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\fBlabelMap()\fP, \fBscaleDraw()\fP, \fBsetScale()\fP 
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.SS "void QwtCompass::setRose (\fBQwtCompassRose\fP *rose)"Set a rose for the compass 
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\fBParameters:\fP
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\fIrose\fP Compass rose 
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\fBWarning:\fP
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The rose will be deleted, when a different rose is set or in ~QwtCompass 
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\fBSee also:\fP
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\fBrose()\fP 
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.SH "Author"
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