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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 &) |
Public Member Functions inherited from QwtColorMap | |
| 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 | |
Public Types inherited from QwtColorMap | |
| 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 | ) |
1.8.1