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

QwtAlphaColorMap -

#include <qwt_color_map.h>
Inherits QwtColorMap.


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 &)
 

QwtAlphaColorMap variies the alpha value of a color.

Constructor
Parameters:
color Color of the map

Copy constructor
Parameters:
other Other color map

Returns:
the color
See also:
setColor()

Assignment operator
Parameters:
other Other color map
Returns:
*this

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.

Set the color
Parameters:
color Color
See also:
color()

Generated automatically by Doxygen for Qwt User's Guide from the source code.
Tue Nov 20 2012 Version 5.2.3

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