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
       virtual void keyPressEvent (QKeyEvent *)

   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.

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.

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

   void QwtCompass::drawScaleContents (QPainter * painter, const QPointF & center, double radius) const
       [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.

   void QwtCompass::keyPressEvent (QKeyEvent * kev) [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.

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

       See also:
           setRose()

   QwtCompassRose * QwtCompass::rose ()
       Returns:
           rose

       See also:
           setRose()

   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()

Author

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

Version 6.1.4                                    Wed Jan 2 2019                                    QwtCompass(3)