.TH "QwtCompassScaleDraw" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtCompassScaleDraw \- A special scale draw made for \fBQwtCompass\fP\&.  

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

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.RI "\fBQwtCompassScaleDraw\fP ()"
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.RI "Constructor\&. "
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.RI "\fBQwtCompassScaleDraw\fP (const \fBQMap\fP< double, QString > &map)"
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.RI "Constructor\&. "
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.RI "virtual \fB~QwtCompassScaleDraw\fP ()"
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.RI "Destructor\&. "
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.RI "void \fBsetLabelMap\fP (const \fBQMap\fP< double, QString > &map)"
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.RI "Set a map, mapping values to labels\&. "
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.RI "\fBQMap\fP< double, QString > \fBlabelMap\fP () const"
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.RI "virtual \fBQwtText\fP \fBlabel\fP (double value) const override"
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.SS "Additional Inherited Members"
.SH "Detailed Description"
.PP 
A special scale draw made for \fBQwtCompass\fP\&. 

\fBQwtCompassScaleDraw\fP maps values to strings using a special map, that can be modified by the application
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The default map consists of the labels N, NE, E, SE, S, SW, W, NW\&.
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\fBSee also\fP
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\fBQwtCompass\fP 
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Definition at line 32 of file qwt_compass\&.h\&.
.SH "Constructor & Destructor Documentation"
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.SS "QwtCompassScaleDraw::QwtCompassScaleDraw ()\fC [explicit]\fP"

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Constructor\&. Initializes a label map for multiples of 45 degrees 
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Definition at line 28 of file qwt_compass\&.cpp\&.
.SS "QwtCompassScaleDraw::QwtCompassScaleDraw (const \fBQMap\fP< double, QString > & map)\fC [explicit]\fP"

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Constructor\&. 
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\fBParameters\fP
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\fImap\fP Value to label map 
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Definition at line 63 of file qwt_compass\&.cpp\&.
.SH "Member Function Documentation"
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.SS "\fBQwtText\fP QwtCompassScaleDraw::label (double value) const\fC [override]\fP, \fC [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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\fBlabel()\fP looks in the \fBlabelMap()\fP for a corresponding label for value or returns an null text\&.
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\fBReturns\fP
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Label 
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\fBSee also\fP
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\fBlabelMap()\fP, \fBsetLabelMap()\fP 
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Reimplemented from \fBQwtAbstractScaleDraw\fP\&.
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Definition at line 116 of file qwt_compass\&.cpp\&.
.SS "\fBQMap\fP< double, QString > QwtCompassScaleDraw::labelMap () const"

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\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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Definition at line 99 of file qwt_compass\&.cpp\&.
.SS "void QwtCompassScaleDraw::setLabelMap (const \fBQMap\fP< double, QString > & map)"

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Set a map, mapping values to labels\&. 
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\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, scaleDraw(), setScale() 
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Definition at line 90 of file qwt_compass\&.cpp\&.

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