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Qwt User's Guide 6.3.0
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A magnet needle for compass widgets. More...
#include <qwt_dial_needle.h>
Public Types | |
| enum | Style { TriangleStyle , ThinStyle } |
| Style of the needle. More... | |
Public Member Functions | |
| QwtCompassMagnetNeedle (Style=TriangleStyle, const QColor &light=Qt::white, const QColor &dark=Qt::red) | |
| Constructor. | |
Public Member Functions inherited from QwtDialNeedle | |
| QwtDialNeedle () | |
| Constructor. | |
| virtual | ~QwtDialNeedle () |
| Destructor. | |
| virtual void | setPalette (const QPalette &) |
| const QPalette & | palette () const |
| virtual void | draw (QPainter *, const QPointF ¢er, double length, double direction, QPalette::ColorGroup=QPalette::Active) const |
Protected Member Functions | |
| virtual void | drawNeedle (QPainter *, double length, QPalette::ColorGroup) const override |
Protected Member Functions inherited from QwtDialNeedle | |
| virtual void | drawKnob (QPainter *, double width, const QBrush &, bool sunken) const |
| Draw the knob. | |
A magnet needle for compass widgets.
A magnet needle points to two opposite directions indicating north and south.
The following colors are used:
Definition at line 127 of file qwt_dial_needle.h.
Style of the needle.
| Enumerator | |
|---|---|
| TriangleStyle | A needle with a triangular shape. |
| ThinStyle | A thin needle. |
Definition at line 131 of file qwt_dial_needle.h.
| QwtCompassMagnetNeedle::QwtCompassMagnetNeedle | ( | Style | style = TriangleStyle, |
| const QColor & | light = Qt::white, | ||
| const QColor & | dark = Qt::red ) |
Constructor.
Definition at line 350 of file qwt_dial_needle.cpp.
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overrideprotectedvirtual |
Draw the needle
| painter | Painter |
| length | Length of the needle |
| colorGroup | Color group, used for painting |
Implements QwtDialNeedle.
Definition at line 369 of file qwt_dial_needle.cpp.