Public Member Functions¶

QwtAlphaColorMap (const QColor &=QColor(Qt::gray))
Constructor. virtual ~QwtAlphaColorMap ()
Destructor. void setAlphaInterval (int alpha1, int alpha2)
int alpha1 () const
int alpha2 () const
void setColor (const QColor &)
QColor color () const
virtual QRgb rgb (const QwtInterval &, double value) const override
Map a value of a given interval into a alpha value.

Additional Inherited Members¶

QwtAlphaColorMap::QwtAlphaColorMap (const QColor & color = QColor( Qt::gray )) [explicit]¶

Constructor. The alpha interval is initialized by 0 to 255.

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Definition at line 539 of file qwt_color_map.cpp.

int QwtAlphaColorMap::alpha1 () const¶

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Definition at line 600 of file qwt_color_map.cpp.

int QwtAlphaColorMap::alpha2 () const¶

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Definition at line 609 of file qwt_color_map.cpp.

QColor QwtAlphaColorMap::color () const¶

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Definition at line 571 of file qwt_color_map.cpp.

QRgb QwtAlphaColorMap::rgb (const QwtInterval & interval, double value) const [override], [virtual]¶

Map a value of a given interval into a alpha value.

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Implements QwtColorMap.

Definition at line 622 of file qwt_color_map.cpp.

void QwtAlphaColorMap::setAlphaInterval (int alpha1, int alpha2)¶

Set the interval for the alpha coordinate

alpha1/alpha2 need to be in the range 0 to 255, where 255 means opaque and 0 means transparent.

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Definition at line 587 of file qwt_color_map.cpp.

void QwtAlphaColorMap::setColor (const QColor & color)¶

Set the color

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Definition at line 558 of file qwt_color_map.cpp.