QwtAlphaColorMap
QwtAlphaColorMap variies the alpha value of a color.
- Provided by: libqwt-doc (Version: 6.0.0-1.2)
- Source: qwt
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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
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
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