qwt_slider.h

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/******************************************************************************
 * Qwt Widget Library
 * Copyright (C) 1997   Josef Wilgen
 * Copyright (C) 2002   Uwe Rathmann
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the Qwt License, Version 1.0
 *****************************************************************************/
 
#ifndef QWT_SLIDER_H
#define QWT_SLIDER_H
 
#include "qwt_global.h"
#include "qwt_abstract_slider.h"
 
class QwtScaleDraw;
 
class QWT_EXPORT QwtSlider : public QwtAbstractSlider
{
    Q_OBJECT
 
    Q_ENUMS( ScalePosition BackgroundStyle )
 
    Q_PROPERTY( Qt::Orientation orientation
        READ orientation WRITE setOrientation )
    Q_PROPERTY( ScalePosition scalePosition READ scalePosition
        WRITE setScalePosition )
 
    Q_PROPERTY( bool trough READ hasTrough WRITE setTrough )
    Q_PROPERTY( bool groove READ hasGroove WRITE setGroove )
 
    Q_PROPERTY( QSize handleSize READ handleSize WRITE setHandleSize )
    Q_PROPERTY( int borderWidth READ borderWidth WRITE setBorderWidth )
    Q_PROPERTY( int spacing READ spacing WRITE setSpacing )
 
  public:
 
    enum ScalePosition
    {
        NoScale,
 
        LeadingScale,
 
        TrailingScale
    };
 
    explicit QwtSlider( QWidget* parent = NULL );
    explicit QwtSlider( Qt::Orientation, QWidget* parent = NULL );
 
    virtual ~QwtSlider();
 
    void setOrientation( Qt::Orientation );
    Qt::Orientation orientation() const;
 
    void setScalePosition( ScalePosition );
    ScalePosition scalePosition() const;
 
    void setTrough( bool );
    bool hasTrough() const;
 
    void setGroove( bool );
    bool hasGroove() const;
 
    void setHandleSize( const QSize& );
    QSize handleSize() const;
 
    void setBorderWidth( int );
    int borderWidth() const;
 
    void setSpacing( int );
    int spacing() const;
 
    virtual QSize sizeHint() const QWT_OVERRIDE;
    virtual QSize minimumSizeHint() const QWT_OVERRIDE;
 
    void setScaleDraw( QwtScaleDraw* );
    const QwtScaleDraw* scaleDraw() const;
 
    void setUpdateInterval( int );
    int updateInterval() const;
 
  protected:
    virtual double scrolledTo( const QPoint& ) const QWT_OVERRIDE;
    virtual bool isScrollPosition( const QPoint& ) const QWT_OVERRIDE;
 
    virtual void drawSlider ( QPainter*, const QRect& ) const;
    virtual void drawHandle( QPainter*, const QRect&, int pos ) const;
 
    virtual void mousePressEvent( QMouseEvent* ) QWT_OVERRIDE;
    virtual void mouseReleaseEvent( QMouseEvent* ) QWT_OVERRIDE;
    virtual void resizeEvent( QResizeEvent* ) QWT_OVERRIDE;
    virtual void paintEvent ( QPaintEvent* ) QWT_OVERRIDE;
    virtual void changeEvent( QEvent* ) QWT_OVERRIDE;
    virtual void timerEvent( QTimerEvent* ) QWT_OVERRIDE;
 
    virtual bool event( QEvent* ) QWT_OVERRIDE;
 
    virtual void scaleChange() QWT_OVERRIDE;
 
    QRect sliderRect() const;
    QRect handleRect() const;
 
  private:
    QwtScaleDraw* scaleDraw();
 
    void layoutSlider( bool );
    void initSlider( Qt::Orientation );
 
    class PrivateData;
    PrivateData* m_data;
};
 
#endif