qwt_magnifier.h
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
* 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_MAGNIFIER_H
#define QWT_MAGNIFIER_H 1
#include "qwt_global.h"
#include <qobject.h>
class QWidget;
class QMouseEvent;
class QWheelEvent;
class QKeyEvent;
class QWT_EXPORT QwtMagnifier: public QObject
{
Q_OBJECT
public:
explicit QwtMagnifier( QWidget * );
virtual ~QwtMagnifier();
QWidget *parentWidget();
const QWidget *parentWidget() const;
void setEnabled( bool );
bool isEnabled() const;
// mouse
void setMouseFactor( double );
double mouseFactor() const;
void setMouseButton( Qt::MouseButton, Qt::KeyboardModifiers = Qt::NoModifier );
void getMouseButton( Qt::MouseButton &, Qt::KeyboardModifiers & ) const;
// mouse wheel
void setWheelFactor( double );
double wheelFactor() const;
void setWheelModifiers( Qt::KeyboardModifiers );
Qt::KeyboardModifiers wheelModifiers() const;
// keyboard
void setKeyFactor( double );
double keyFactor() const;
void setZoomInKey( int key, Qt::KeyboardModifiers = Qt::NoModifier );
void getZoomInKey( int &key, Qt::KeyboardModifiers & ) const;
void setZoomOutKey( int key, Qt::KeyboardModifiers = Qt::NoModifier );
void getZoomOutKey( int &key, Qt::KeyboardModifiers & ) const;
virtual bool eventFilter( QObject *, QEvent * );
protected:
virtual void rescale( double factor ) = 0;
virtual void widgetMousePressEvent( QMouseEvent * );
virtual void widgetMouseReleaseEvent( QMouseEvent * );
virtual void widgetMouseMoveEvent( QMouseEvent * );
virtual void widgetWheelEvent( QWheelEvent * );
virtual void widgetKeyPressEvent( QKeyEvent * );
virtual void widgetKeyReleaseEvent( QKeyEvent * );
private:
class PrivateData;
PrivateData *d_data;
};
#endif
QwtMagnifier
QwtMagnifier provides zooming, by magnifying in steps.
Definition: qwt_magnifier.h:27