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qwt_abstract_scale.h

00001 /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
00002  * Qwt Widget Library
00003  * Copyright (C) 1997   Josef Wilgen
00004  * Copyright (C) 2002   Uwe Rathmann
00005  * 
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the Qwt License, Version 1.0
00008  *****************************************************************************/
00009 
00010 #ifndef QWT_ABSTRACT_SCALE_H
00011 #define QWT_ABSTRACT_SCALE_H
00012 
00013 #include "qwt_global.h"
00014 
00015 class QwtScaleEngine;
00016 class QwtAbstractScaleDraw;
00017 class QwtScaleDiv;
00018 class QwtDoubleInterval;
00019 
00028 class QWT_EXPORT QwtAbstractScale
00029 {
00030 public:
00031     QwtAbstractScale();
00032     virtual ~QwtAbstractScale();
00033     
00034     void setScale(double vmin, double vmax, double step = 0.0);
00035     void setScale(const QwtDoubleInterval &, double step = 0.0);
00036     void setScale(const QwtScaleDiv &s);
00037 
00038     void setAutoScale();
00039     bool autoScale() const;
00040 
00041     void setScaleMaxMajor( int ticks);
00042     int scaleMaxMinor() const;
00043 
00044     void setScaleMaxMinor( int ticks);
00045     int scaleMaxMajor() const; 
00046 
00047     void setScaleEngine(QwtScaleEngine *);
00048     const QwtScaleEngine *scaleEngine() const;
00049     QwtScaleEngine *scaleEngine();
00050 
00051 protected:
00052     void rescale(double vmin, double vmax, double step = 0.0);
00053 
00054     void setAbstractScaleDraw(QwtAbstractScaleDraw *);
00055     const QwtAbstractScaleDraw *abstractScaleDraw() const;
00056     QwtAbstractScaleDraw *abstractScaleDraw();
00057 
00058     virtual void scaleChange();
00059 
00060 private:
00061     void updateScaleDraw();
00062 
00063     class PrivateData;
00064     PrivateData *d_data;
00065 };
00066 
00067 #endif

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