QwtAlphaColorMap

NAME

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.

Index

NAME

SYNOPSIS

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

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

QwtAlphaColorMap::QwtAlphaColorMap (const QwtAlphaColorMap & other)

QwtAlphaColorMap::~QwtAlphaColorMap () [virtual]

Member Function Documentation

QColor QwtAlphaColorMap::color () const

QwtColorMap * QwtAlphaColorMap::copy () const [virtual]

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

QRgb QwtAlphaColorMap::rgb (const QwtDoubleInterval & interval, double value) const [virtual]

void QwtAlphaColorMap::setColor (const QColor & color)

Author