QwtAlphaColorMap varies the alpha value of a color.  
 More...
#include <qwt_color_map.h>
QwtAlphaColorMap varies the alpha value of a color. 
      
        
          | QwtAlphaColorMap::QwtAlphaColorMap | ( | const QColor & | color = QColor( Qt::gray ) | ) |  | 
      
 
 
      
        
          | QColor QwtAlphaColorMap::color | ( |  | ) | const | 
      
 
 
  
  | 
        
          | QRgb QwtAlphaColorMap::rgb | ( | const QwtInterval & | 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 | ) |  | 
      
 
Set the color
- Parameters
- 
  
  
- See also
- color()