QwtAlphaColorMap Class Reference
QwtAlphaColorMap variies the alpha value of a color. More...
#include <qwt_color_map.h>
Inheritance diagram for QwtAlphaColorMap:
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 |
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
| QwtAlphaColorMap::~QwtAlphaColorMap | ( | ) | [virtual] |
Destructor.
Member Function Documentation
| QColor QwtAlphaColorMap::color | ( | ) | const |
- Returns:
- the color
- See also:
- setColor()
| QwtColorMap * QwtAlphaColorMap::copy | ( | ) | const [virtual] |
Clone the color map.
Implements QwtColorMap.
| QwtAlphaColorMap & QwtAlphaColorMap::operator= | ( | const QwtAlphaColorMap & | other | ) |
Assignment operator
- Parameters:
-
other Other color map
- Returns:
- *this
| 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.
| void QwtAlphaColorMap::setColor | ( | const QColor & | color | ) |
Generated on Wed Sep 2 18:37:23 2009 for Qwt User's Guide by
1.6.1