| Qwt User's Guide
    6.1.3
    | 
A special scale draw made for QwtCompass. More...
#include <qwt_compass.h>

| Public Member Functions | |
| QwtCompassScaleDraw () | |
| Constructor.  More... | |
| QwtCompassScaleDraw (const QMap< double, QString > &map) | |
| Constructor.  More... | |
| void | setLabelMap (const QMap< double, QString > &map) | 
| Set a map, mapping values to labels.  More... | |
| QMap< double, QString > | labelMap () const | 
| virtual QwtText | label (double value) const | 
|  Public Member Functions inherited from QwtRoundScaleDraw | |
| QwtRoundScaleDraw () | |
| Constructor.  More... | |
| virtual | ~QwtRoundScaleDraw () | 
| Destructor. | |
| void | setRadius (double radius) | 
| double | radius () const | 
| void | moveCenter (double x, double y) | 
| Move the center of the scale draw, leaving the radius unchanged. | |
| void | moveCenter (const QPointF &) | 
| QPointF | center () const | 
| Get the center of the scale. | |
| void | setAngleRange (double angle1, double angle2) | 
| Adjust the baseline circle segment for round scales.  More... | |
| virtual double | extent (const QFont &) const | 
|  Public Member Functions inherited from QwtAbstractScaleDraw | |
| QwtAbstractScaleDraw () | |
| Constructor.  More... | |
| virtual | ~QwtAbstractScaleDraw () | 
| Destructor. | |
| void | setScaleDiv (const QwtScaleDiv &s) | 
| const QwtScaleDiv & | scaleDiv () const | 
| void | setTransformation (QwtTransform *) | 
| const QwtScaleMap & | scaleMap () const | 
| QwtScaleMap & | scaleMap () | 
| void | enableComponent (ScaleComponent, bool enable=true) | 
| bool | hasComponent (ScaleComponent) const | 
| void | setTickLength (QwtScaleDiv::TickType, double length) | 
| double | tickLength (QwtScaleDiv::TickType) const | 
| double | maxTickLength () const | 
| void | setSpacing (double margin) | 
| Set the spacing between tick and labels.  More... | |
| double | spacing () const | 
| Get the spacing.  More... | |
| void | setPenWidth (int width) | 
| Specify the width of the scale pen.  More... | |
| int | penWidth () const | 
| virtual void | draw (QPainter *, const QPalette &) const | 
| Draw the scale.  More... | |
| void | setMinimumExtent (double) | 
| Set a minimum for the extent.  More... | |
| double | minimumExtent () const | 
| Additional Inherited Members | |
|  Public Types inherited from QwtAbstractScaleDraw | |
| enum | ScaleComponent { Backbone = 0x01, Ticks = 0x02, Labels = 0x04 } | 
| typedef QFlags< ScaleComponent > | ScaleComponents | 
| Scale components. | |
|  Protected Member Functions inherited from QwtRoundScaleDraw | |
| virtual void | drawTick (QPainter *, double val, double len) const | 
| virtual void | drawBackbone (QPainter *) const | 
| virtual void | drawLabel (QPainter *, double val) const | 
|  Protected Member Functions inherited from QwtAbstractScaleDraw | |
| void | invalidateCache () | 
| const QwtText & | tickLabel (const QFont &, double value) const | 
| Convert a value into its representing label and cache it.  More... | |
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.
| 
 | explicit | 
Constructor.
Initializes a label map for multiples of 45 degrees
| 
 | explicit | 
Constructor.
| map | Value to label map | 
| 
 | virtual | 
Map a value to a corresponding label
| value | Value that will be mapped | 
label() looks in the labelMap() for a corresponding label for value or returns an null text.
Reimplemented from QwtAbstractScaleDraw.
| QMap< double, QString > QwtCompassScaleDraw::labelMap | ( | ) | const | 
| void QwtCompassScaleDraw::setLabelMap | ( | const QMap< double, QString > & | map | ) | 
Set a map, mapping values to labels.
| 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.