10#ifndef QWT_SCALE_ENGINE_H 
   11#define QWT_SCALE_ENGINE_H 
   13#include "qwt_global.h" 
   14#include "qwt_scale_div.h" 
   25    static double ceilEps( 
double value, 
double intervalSize );
 
   26    static double floorEps( 
double value, 
double intervalSize );
 
   28    static double divideEps( 
double intervalSize, 
double numSteps );
 
   30    static double divideInterval( 
double intervalSize,
 
   31        int numSteps, uint base );
 
 
   60        IncludeReference = 0x01,
 
 
   83    void setBase( uint base );
 
   86    void setAttribute( 
Attribute, 
bool on = 
true );
 
   92    void setReference( 
double );
 
   93    double reference() 
const;
 
   95    void setMargins( 
double lower, 
double upper );
 
   96    double lowerMargin() 
const;
 
   97    double upperMargin() 
const;
 
  108        double& x1, 
double& x2, 
double& stepSize ) 
const = 0;
 
  123        int maxMajorSteps, 
int maxMinorSteps,
 
  124        double stepSize = 0.0 ) 
const = 0;
 
  130    bool contains( 
const QwtInterval&, 
double value ) 
const;
 
  133    double divideInterval( 
double intervalSize, 
int numSteps ) 
const;
 
 
  157    virtual void autoScale( 
int maxNumSteps,
 
  158        double& x1, 
double& x2, 
double& stepSize ) 
const QWT_OVERRIDE;
 
  160    virtual QwtScaleDiv divideScale( 
double x1, 
double x2,
 
  161        int maxMajorSteps, 
int maxMinorSteps,
 
  162        double stepSize = 0.0 ) 
const QWT_OVERRIDE;
 
  169        const QwtInterval&, 
double stepSize, 
int maxMinorSteps,
 
  173        const QwtInterval& interval, 
double stepSize ) 
const;
 
  176        int maxMinorSteps, 
double stepSize,
 
 
  197    virtual void autoScale( 
int maxNumSteps,
 
  198        double& x1, 
double& x2, 
double& stepSize ) 
const QWT_OVERRIDE;
 
  200    virtual QwtScaleDiv divideScale( 
double x1, 
double x2,
 
  201        int maxMajorSteps, 
int maxMinorSteps,
 
  202        double stepSize = 0.0 ) 
const QWT_OVERRIDE;
 
  208        const QwtInterval&, 
double stepSize, 
int maxMinorSteps,
 
  212        const QwtInterval& interval, 
double stepSize ) 
const;
 
  215        int maxMinorSteps, 
double stepSize,
 
 
A class representing an interval.
A scale engine for linear scales.
A scale engine for logarithmic scales.
Arithmetic including a tolerance.
A class representing a scale division.
@ NTickTypes
Number of valid tick types.
Base class for scale engines.
QFlags< Attribute > Attributes
virtual void autoScale(int maxNumSteps, double &x1, double &x2, double &stepSize) const =0
virtual QwtScaleDiv divideScale(double x1, double x2, int maxMajorSteps, int maxMinorSteps, double stepSize=0.0) const =0
Calculate a scale division.