Qwt User's Guide
6.0.2
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#include <qwt_color_map.h>
Public Member Functions | |
QwtAlphaColorMap (const QColor &=QColor(Qt::gray)) | |
virtual | ~QwtAlphaColorMap () |
QColor | color () const |
virtual QRgb | rgb (const QwtInterval &, double value) const |
void | setColor (const QColor &) |
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QwtColorMap (Format=QwtColorMap::RGB) | |
virtual | ~QwtColorMap () |
QColor | color (const QwtInterval &, double value) const |
virtual QVector< QRgb > | colorTable (const QwtInterval &) const |
Format | format () const |
Additional Inherited Members | |
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enum | Format { RGB, Indexed } |
QwtAlphaColorMap variies the alpha value of a color.
QwtAlphaColorMap::QwtAlphaColorMap | ( | const QColor & | color = QColor( Qt::gray ) | ) |
Constructor
color | Color of the map |
QColor QwtAlphaColorMap::color | ( | ) | const |
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virtual |
Map a value of a given interval into a alpha value.
alpha := (value - interval.minValue()) / interval.width();
interval | Range for all values |
value | Value to map into a rgb value |
Implements QwtColorMap.
void QwtAlphaColorMap::setColor | ( | const QColor & | color | ) |