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

NAME
       QwtPolarMarker - A class for drawing markers.


SYNOPSIS
       #include <qwt_polar_marker.h>

       Inherits QwtPolarItem.

   Public Member Functions
       QwtPolarMarker ()
           Sets alignment to Qt::AlignCenter, and style to NoLine.
       virtual ~QwtPolarMarker ()
           Destructor.
       virtual int rtti () const override
       void setPosition (const QwtPointPolar &)
           Change the position of the marker.
       QwtPointPolar position () const
       void setSymbol (const QwtSymbol *s)
           Assign a symbol.
       const QwtSymbol * symbol () const
       void setLabel (const QwtText &)
           Set the label.
       QwtText label () const
       void setLabelAlignment (Qt::Alignment)
           Set the alignment of the label.
       Qt::Alignment labelAlignment () const
       virtual void draw (QPainter *painter, const QwtScaleMap &azimuthMap,
           const QwtScaleMap &radialMap, const QPointF &pole, double radius,
           const QRectF &canvasRect) const override
       virtual QwtInterval boundingInterval (int scaleId) const override

   Additional Inherited Members

Detailed Description
       A class for drawing markers.

       A marker can be a a symbol, a label or a combination of them, which can
       be drawn around a center point inside a bounding rectangle.

       The setSymbol() member assigns a symbol to the marker. The symbol is
       drawn at the specified point.

       With setLabel(), a label can be assigned to the marker. The
       setLabelAlignment() member specifies where the label is drawn. All the
       Align*-constants in Qt::AlignmentFlags (see Qt documentation) are
       valid. The alignment refers to the center point of the marker, which
       means, for example, that the label would be painted left above the
       center point if the alignment was set to AlignLeft|AlignTop.

       Definition at line 36 of file qwt_polar_marker.h.

Member Function Documentation
   QwtInterval QwtPolarMarker::boundingInterval (int scaleId) const
       [override],  [virtual]
       Interval, that is necessary to display the item This interval can be
       useful for operations like clipping or autoscaling

       Parameters
           scaleId Scale index

       Returns
           bounding interval ( == position )

       See also
           position()

       Reimplemented from QwtPolarItem.

       Definition at line 228 of file qwt_polar_marker.cpp.

   void QwtPolarMarker::draw (QPainter * painter, const QwtScaleMap &
       azimuthMap, const QwtScaleMap & radialMap, const QPointF & pole, double
       radius, const QRectF & canvasRect) const [override],  [virtual]
       Draw the marker

       Parameters
           painter Painter
           azimuthMap Maps azimuth values to values related to 0.0, M_2PI
           radialMap Maps radius values into painter coordinates.
           pole Position of the pole in painter coordinates
           radius Radius of the complete plot area in painter coordinates
           canvasRect Contents rect of the canvas in painter coordinates

       Implements QwtPolarItem.

       Definition at line 89 of file qwt_polar_marker.cpp.

   QwtText QwtPolarMarker::label () const
       Returns
           the label

       See also
           setLabel()

       Definition at line 185 of file qwt_polar_marker.cpp.

   Qt::Alignment QwtPolarMarker::labelAlignment () const
       Returns
           the label alignment

       See also
           setLabelAlignment()

       Definition at line 214 of file qwt_polar_marker.cpp.

   QwtPointPolar QwtPolarMarker::position () const
       Returns
           Position of the marker

       Definition at line 64 of file qwt_polar_marker.cpp.

   int QwtPolarMarker::rtti () const [override],  [virtual]
       Returns
           QwtPolarItem::Rtti_PlotMarker

       Reimplemented from QwtPolarItem.

       Definition at line 58 of file qwt_polar_marker.cpp.

   void QwtPolarMarker::setLabel (const QwtText & label)
       Set the label.

       Parameters
           label label text

       See also
           label()

       Definition at line 172 of file qwt_polar_marker.cpp.

   void QwtPolarMarker::setLabelAlignment (Qt::Alignment align)
       Set the alignment of the label. The alignment determines where the
       label is drawn relative to the marker's position.

       Parameters
           align Alignment. A combination of AlignTop, AlignBottom, AlignLeft,
           AlignRight, AlignCenter, AlgnHCenter, AlignVCenter.

       See also
           labelAlignment()

       Definition at line 201 of file qwt_polar_marker.cpp.

   void QwtPolarMarker::setSymbol (const QwtSymbol * symbol)
       Assign a symbol.

       Parameters
           symbol New symbol

       See also
           symbol()

       Definition at line 148 of file qwt_polar_marker.cpp.

   const QwtSymbol * QwtPolarMarker::symbol () const
       Returns
           the symbol

       See also
           setSymbol(), QwtSymbol

       Definition at line 162 of file qwt_polar_marker.cpp.


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

Version 6.2.0                   Sun Jul 18 2021              QwtPolarMarker(3)