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QwtAlphaColorMap

NAME

QwtAlphaColorMap -

SYNOPSIS

Inherits QwtColorMap.

Detailed Description

QwtAlphaColorMap variies the alpha value of a color.

Definition at line 160 of file qwt_color_map.h.

Public Member Functions

QwtAlphaColorMap (const QColor &=QColor(Qt::gray))

QwtAlphaColorMap (const QwtAlphaColorMap &)

virtual ~QwtAlphaColorMap ()

QwtAlphaColorMap & operator= (const QwtAlphaColorMap &)

virtual QwtColorMap * copy () const

void setColor (const QColor &)

QColor color () const

virtual QRgb rgb (const QwtDoubleInterval &, double value) const

Constructor & Destructor Documentation

QwtAlphaColorMap::QwtAlphaColorMap (const QColor & color = QColor(Qt::gray))

Constructor

Parameters:

color Color of the map

Definition at line 409 of file qwt_color_map.cpp.

Referenced by copy().

QwtAlphaColorMap::QwtAlphaColorMap (const QwtAlphaColorMap & other)

Copy constructor

Parameters:

other Other color map

Definition at line 421 of file qwt_color_map.cpp.

QwtAlphaColorMap::~QwtAlphaColorMap () [virtual]

Destructor.

Definition at line 429 of file qwt_color_map.cpp.

Member Function Documentation

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

Assignment operator

Parameters:

other Other color map

Returns:

*this

Definition at line 439 of file qwt_color_map.cpp.

References d_data.

QwtColorMap * QwtAlphaColorMap::copy () const [virtual]

Clone the color map.

Implements QwtColorMap.

Definition at line 448 of file qwt_color_map.cpp.

References QwtAlphaColorMap().

void QwtAlphaColorMap::setColor (const QColor & color)

Set the color

Parameters:

color Color

See also:

color()

Definition at line 462 of file qwt_color_map.cpp.

QColor QwtAlphaColorMap::color () const

Returns:

the color

See also:

setColor()

Definition at line 472 of file qwt_color_map.cpp.

QRgb QwtAlphaColorMap::rgb (const QwtDoubleInterval & interval, double value) 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.

Definition at line 486 of file qwt_color_map.cpp.

References QwtDoubleInterval::minValue(), and QwtDoubleInterval::width().

Author

Generated automatically by Doxygen for Qwt User's Guide from the source code.