plotjuggler: qwt_abstract_scale

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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_DRAW_H
00011 #define QWT_ABSTRACT_SCALE_DRAW_H
00012 
00013 #include "qwt_global.h"
00014 #include "qwt_scale_div.h"
00015 #include "qwt_text.h"
00016 
00017 class QPalette;
00018 class QPainter;
00019 class QFont;
00020 class QwtTransform;
00021 class QwtScaleMap;
00022 
00031 class QWT_EXPORT QwtAbstractScaleDraw
00032 {
00033 public:
00034 
00039     enum ScaleComponent
00040     {
00042         Backbone = 0x01,
00043 
00045         Ticks = 0x02,
00046 
00048         Labels = 0x04
00049     };
00050 
00052     typedef QFlags<ScaleComponent> ScaleComponents;
00053 
00054     QwtAbstractScaleDraw();
00055     virtual ~QwtAbstractScaleDraw();
00056 
00057     void setScaleDiv( const QwtScaleDiv &s );
00058     const QwtScaleDiv& scaleDiv() const;
00059 
00060     void setTransformation( QwtTransform * );
00061     const QwtScaleMap &scaleMap() const;
00062     QwtScaleMap &scaleMap();
00063 
00064     void enableComponent( ScaleComponent, bool enable = true );
00065     bool hasComponent( ScaleComponent ) const;
00066 
00067     void setTickLength( QwtScaleDiv::TickType, double length );
00068     double tickLength( QwtScaleDiv::TickType ) const;
00069     double maxTickLength() const;
00070 
00071     void setSpacing( double margin );
00072     double spacing() const;
00073 
00074     void setPenWidth( int width );
00075     int penWidth() const;
00076 
00077     virtual void draw( QPainter *, const QPalette & ) const;
00078 
00079     virtual QwtText label( double ) const;
00080 
00093     virtual double extent( const QFont &font ) const = 0;
00094 
00095     void setMinimumExtent( double );
00096     double minimumExtent() const;
00097 
00098     void invalidateCache();
00099 
00100 protected:
00110     virtual void drawTick( QPainter *painter, double value, double len ) const = 0;
00111 
00118     virtual void drawBackbone( QPainter *painter ) const = 0;
00119 
00128     virtual void drawLabel( QPainter *painter, double value ) const = 0;
00129 
00130     const QwtText &tickLabel( const QFont &, double value ) const;
00131 
00132 private:
00133     Q_DISABLE_COPY(QwtAbstractScaleDraw)
00134 
00135     class PrivateData;
00136     PrivateData *d_data;
00137 };
00138 
00139 Q_DECLARE_OPERATORS_FOR_FLAGS( QwtAbstractScaleDraw::ScaleComponents )
00140 
00141 #endif