QwtCompassScaleDraw - Man Page

A special scale draw made for QwtCompass.

Synopsis

#include <qwt_compass.h>

Inherits QwtRoundScaleDraw.

Public Member Functions

QwtCompassScaleDraw ()
Constructor.
QwtCompassScaleDraw (const QMap< double, QString > &map)
Constructor.
void setLabelMap (const QMap< double, QString > &map)
Set a map, mapping values to labels.
QMap< double, QString > labelMap () const
virtual QwtText label (double value) const

Additional Inherited Members

Detailed Description

A special scale draw made for QwtCompass.

QwtCompassScaleDraw maps values to strings using a special map, that can be modified by the application

The default map consists of the labels N, NE, E, SE, S, SW, W, NW.

See also

QwtCompass

Constructor & Destructor Documentation

QwtCompassScaleDraw::QwtCompassScaleDraw () [explicit]

Constructor. Initializes a label map for multiples of 45 degrees

QwtCompassScaleDraw::QwtCompassScaleDraw (const QMap< double, QString > & map) [explicit]

Constructor.

Parameters

map Value to label map

Member Function Documentation

QwtText QwtCompassScaleDraw::label (double value) const [virtual]

Map a value to a corresponding label

Parameters

value Value that will be mapped

label() looks in the labelMap() for a corresponding label for value or returns an null text.

Returns

Label

See also

labelMap(), setLabelMap()

Reimplemented from QwtAbstractScaleDraw.

QMap< double, QString > QwtCompassScaleDraw::labelMap () const

Returns

map, mapping values to labels

See also

setLabelMap()

void QwtCompassScaleDraw::setLabelMap (const QMap< double, QString > & map)

Set a map, mapping values to labels.

Parameters

map Value to label map

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.

Warning

The map will have no effect for values that are no major tick values. Major ticks can be changed by QwtScaleDraw::setScale

See also

labelMap(), scaleDraw(), setScale()

Author

Generated automatically by Doxygen for Qwt User's Guide from the source code.

Info

Mon Jun 1 2020 Version 6.1.5 Qwt User's Guide