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Qwt User's Guide
6.1.6
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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 &) |
| 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) |
| 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 value, 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.
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explicit |
Constructor.
Initializes a label map for multiples of 45 degrees
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explicit |
Constructor.
| map | Value to label map |
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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.