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NAME

       QwtAlphaColorMap - QwtAlphaColorMap variies the alpha value of a color.

SYNOPSIS

       #include <qwt_color_map.h>

       Inherits QwtColorMap.

   Public Member Functions
       QwtAlphaColorMap (const QColor &=QColor(Qt::gray))
       QwtAlphaColorMap (const QwtAlphaColorMap &)
       virtual ~QwtAlphaColorMap ()
       QwtAlphaColorMap & operator= (const QwtAlphaColorMap &)
       virtual QwtColorMap * copy () const
       void setColor (const QColor &)
       QColor color () const
       virtual QRgb rgb (const QwtDoubleInterval &, double value) const

Detailed Description

       QwtAlphaColorMap variies the alpha value of a color.

Constructor & Destructor Documentation

   QwtAlphaColorMap::QwtAlphaColorMap (const QColor & color =
       QColor(Qt::gray))
       Constructor

       Parameters:
           color Color of the map

   QwtAlphaColorMap::QwtAlphaColorMap (const QwtAlphaColorMap & other)
       Copy constructor

       Parameters:
           other Other color map

   QwtAlphaColorMap::~QwtAlphaColorMap () [virtual]
       Destructor.

Member Function Documentation

   QColor QwtAlphaColorMap::color () const
       Returns:
           the color

       See also:
           setColor()

   QwtColorMap * QwtAlphaColorMap::copy () const [virtual]
       Clone the color map.

       Implements QwtColorMap.

   QwtAlphaColorMap & QwtAlphaColorMap::operator= (const QwtAlphaColorMap &
       other)
       Assignment operator

       Parameters:
           other Other color map

       Returns:
           *this

   QRgb QwtAlphaColorMap::rgb (const QwtDoubleInterval & interval, double
       value) const [virtual]
       Map a value of a given interval into a alpha value.

       alpha := (value - interval.minValue()) / interval.width();

       Parameters:
           interval Range for all values
           value Value to map into a rgb value

       Returns:
           rgb value, with an alpha value

       Implements QwtColorMap.

   void QwtAlphaColorMap::setColor (const QColor & color)
       Set the color

       Parameters:
           color Color

       See also:
           color()

Author

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