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

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))
 
virtual ~QwtAlphaColorMap ()
 
void setColor (const QColor &)
 
QColor color () const
 
virtual QRgb rgb (const QwtInterval &, 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 () [virtual]

Destructor.

Member Function Documentation

QColor QwtAlphaColorMap::color () const Returns:

the color
See also:
setColor()

QRgb QwtAlphaColorMap::rgb (const QwtInterval &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.
Fri Apr 15 2011 Version 6.0.0