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

NAME

QwtAlphaColorMap -

SYNOPSIS

#include <qwt_color_map.h>

Inherits QwtColorMap.

Public Member Functions


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

Additional Inherited Members

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

Member Function Documentation

QColor QwtAlphaColorMap::color () const

Returns:
the color

See also:

setColor()

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

Assignment operator

Parameters:

other Other color map

Returns:

*this

QRgb QwtAlphaColorMap::rgb (const QwtDoubleInterval &interval, doublevalue) 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.
Tue Nov 20 2012 Version 5.2.3