qwt_panner.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_PANNER_H
#define QWT_PANNER_H
 
#include "qwt_global.h"
#include <qwidget.h>
 
class QCursor;
class QPixmap;
 
class QWT_EXPORT QwtPanner : public QWidget
{
    Q_OBJECT
 
  public:
    explicit QwtPanner( QWidget* parent );
    virtual ~QwtPanner();
 
    void setEnabled( bool );
    bool isEnabled() const;
 
    void setMouseButton( Qt::MouseButton,
        Qt::KeyboardModifiers = Qt::NoModifier );
    void getMouseButton( Qt::MouseButton& button,
        Qt::KeyboardModifiers& ) const;
 
    void setAbortKey( int key, Qt::KeyboardModifiers = Qt::NoModifier );
    void getAbortKey( int& key, Qt::KeyboardModifiers& ) const;
 
    void setCursor( const QCursor& );
    const QCursor cursor() const;
 
    void setOrientations( Qt::Orientations );
    Qt::Orientations orientations() const;
 
    bool isOrientationEnabled( Qt::Orientation ) const;
 
    virtual bool eventFilter( QObject*, QEvent* ) QWT_OVERRIDE;
 
  Q_SIGNALS:
    void panned( int dx, int dy );
 
    void moved( int dx, int dy );
 
  protected:
    virtual void widgetMousePressEvent( QMouseEvent* );
    virtual void widgetMouseReleaseEvent( QMouseEvent* );
    virtual void widgetMouseMoveEvent( QMouseEvent* );
    virtual void widgetKeyPressEvent( QKeyEvent* );
    virtual void widgetKeyReleaseEvent( QKeyEvent* );
 
    virtual void paintEvent( QPaintEvent* ) QWT_OVERRIDE;
 
    virtual QBitmap contentsMask() const;
    virtual QPixmap grab() const;
 
  private:
#ifndef QT_NO_CURSOR
    void showCursor( bool );
#endif
 
    class PrivateData;
    PrivateData* m_data;
};
 
#endif