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.
virtual ~QwtCompassScaleDraw ()
Destructor.
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 override
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
Definition at line 32 of file qwt_compass.h.
Constructor & Destructor Documentation
QwtCompassScaleDraw::QwtCompassScaleDraw () [explicit]
Constructor. Initializes a label map for multiples of 45 degrees
Definition at line 28 of file qwt_compass.cpp.
QwtCompassScaleDraw::QwtCompassScaleDraw (const QMap< double, QString > & map) [explicit]
Constructor.
- Parameters
map Value to label map
Definition at line 63 of file qwt_compass.cpp.
Member Function Documentation
QwtText QwtCompassScaleDraw::label (double value) const [override], [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.
Definition at line 116 of file qwt_compass.cpp.
QMap< double, QString > QwtCompassScaleDraw::labelMap () const
- Returns
map, mapping values to labels
- See also
setLabelMap()
Definition at line 99 of file qwt_compass.cpp.
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()
Definition at line 90 of file qwt_compass.cpp.
Author
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