QwtCompass(3)                  Qwt User's Guide                  QwtCompass(3)

NAME
       QwtCompass - A Compass Widget.


SYNOPSIS
       #include <qwt_compass.h>

       Inherits QwtDial.

   Public Member Functions
       QwtCompass (QWidget *parent=NULL)
           Constructor.
       virtual ~QwtCompass ()
           Destructor.
       void setRose (QwtCompassRose *rose)
       const QwtCompassRose * rose () const
       QwtCompassRose * rose ()

   Protected Member Functions
       virtual void drawRose (QPainter *, const QPointF &center, double
           radius, double north, QPalette::ColorGroup) const
       virtual void drawScaleContents (QPainter *, const QPointF &center,
           double radius) const override
       virtual void keyPressEvent (QKeyEvent *) override

   Additional Inherited Members

Detailed Description
       A Compass Widget.

       QwtCompass is a widget to display and enter directions. It consists of
       a scale, an optional needle and rose.

       Note
           The examples/dials example shows how to use QwtCompass.

       Definition at line 61 of file qwt_compass.h.

Constructor & Destructor Documentation
   QwtCompass::QwtCompass (QWidget * parent = NULL) [explicit]
       Constructor.

       Parameters
           parent Parent widget

       Create a compass widget with a scale, no needle and no rose. The
       default origin is 270.0 with no valid value. It accepts mouse and
       keyboard inputs and has no step size. The default mode is
       QwtDial::RotateNeedle.

       Definition at line 158 of file qwt_compass.cpp.

Member Function Documentation
   void QwtCompass::drawRose (QPainter * painter, const QPointF & center,
       double radius, double north, QPalette::ColorGroup cg) const
       [protected],  [virtual]
       Draw the compass rose

       Parameters
           painter Painter
           center Center of the compass
           radius of the circle, where to paint the rose
           north Direction pointing north, in degrees counter clockwise
           cg Color group

       Definition at line 218 of file qwt_compass.cpp.

   void QwtCompass::drawScaleContents (QPainter * painter, const QPointF &
       center, double radius) const [override],  [protected],  [virtual]
       Draw the contents of the scale

       Parameters
           painter Painter
           center Center of the content circle
           radius Radius of the content circle

       Reimplemented from QwtDial.

       Definition at line 189 of file qwt_compass.cpp.

   void QwtCompass::keyPressEvent (QKeyEvent * kev) [override],  [protected],
       [virtual]
       Handles key events

       Beside the keys described in QwtDial::keyPressEvent numbers from 1-9
       (without 5) set the direction according to their position on the num
       pad.

       See also
           isReadOnly()

       Reimplemented from QwtAbstractSlider.

       Definition at line 271 of file qwt_compass.cpp.

   QwtCompassRose * QwtCompass::rose ()
       Returns
           rose

       See also
           setRose()

       Definition at line 257 of file qwt_compass.cpp.

   const QwtCompassRose * QwtCompass::rose () const
       Returns
           rose

       See also
           setRose()

       Definition at line 248 of file qwt_compass.cpp.

   void QwtCompass::setRose (QwtCompassRose * rose)
       Set a rose for the compass

       Parameters
           rose Compass rose

       Warning
           The rose will be deleted, when a different rose is set or in
           ~QwtCompass

       See also
           rose()

       Definition at line 232 of file qwt_compass.cpp.


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

Version 6.2.0                   Sun Jul 18 2021                  QwtCompass(3)