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qwt_slider.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 // vim: expandtab
00011 
00012 #ifndef QWT_SLIDER_H
00013 #define QWT_SLIDER_H
00014 
00015 #include "qwt_global.h"
00016 #include "qwt_abstract_scale.h"
00017 #include "qwt_abstract_slider.h"
00018 
00029 class QWT_EXPORT QwtSlider : public QwtAbstractSlider, public QwtAbstractScale
00030 {
00031     Q_OBJECT
00032     Q_ENUMS( ScalePos )
00033     Q_ENUMS( BGSTYLE )
00034     Q_PROPERTY( ScalePos scalePosition READ scalePosition
00035         WRITE setScalePosition )
00036     Q_PROPERTY( BGSTYLE bgStyle READ bgStyle WRITE setBgStyle )
00037     Q_PROPERTY( int thumbLength READ thumbLength WRITE setThumbLength )
00038     Q_PROPERTY( int thumbWidth READ thumbWidth WRITE setThumbWidth )
00039     Q_PROPERTY( int borderWidth READ borderWidth WRITE setBorderWidth )
00040  
00041 public:
00042 
00051     enum ScalePos { None, Left, Right, Top, Bottom };
00052 
00057     enum BGSTYLE { BgTrough = 0x1, BgSlot = 0x2, BgBoth = BgTrough | BgSlot};
00058 
00059     explicit QwtSlider(QWidget *parent,
00060           Qt::Orientation = Qt::Horizontal,
00061           ScalePos = None, BGSTYLE bgStyle = BgTrough);
00062     
00063     virtual ~QwtSlider();
00064 
00065     virtual void setOrientation(Qt::Orientation); 
00066 
00067     void setBgStyle(BGSTYLE);
00068     BGSTYLE bgStyle() const;
00069     
00070     void setScalePosition(ScalePos s);
00071     ScalePos scalePosition() const;
00072 
00073     int thumbLength() const;
00074     int thumbWidth() const;
00075     int borderWidth() const;
00076 
00077     void setThumbLength(int l);
00078     void setThumbWidth(int w);
00079     void setBorderWidth(int bw);
00080     void setMargins(int x, int y);
00081 
00082     virtual QSize sizeHint() const;
00083     virtual QSize minimumSizeHint() const;
00084     
00085 protected:
00086     virtual double getValue(const QPoint &p);
00087     virtual void getScrollMode(const QPoint &p, 
00088         int &scrollMode, int &direction);
00089 
00090     void draw(QPainter *p, const QRect& update_rect);
00091     virtual void drawSlider (QPainter *p, const QRect &r);
00092     virtual void drawThumb(QPainter *p, const QRect &, int pos);
00093 
00094     virtual void resizeEvent(QResizeEvent *e);
00095     virtual void paintEvent (QPaintEvent *e);
00096 
00097     virtual void valueChange();
00098     virtual void rangeChange();
00099     virtual void scaleChange();
00100     virtual void fontChange(const QFont &oldFont);
00101 
00102     void layoutSlider( bool update = true );
00103     int xyPosition(double v) const;
00104 
00105 private:
00106     class PrivateData;
00107     PrivateData *d_data;
00108 };
00109 
00110 #endif

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