QwtAlphaColorMap.qt5 - Man Page
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
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