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87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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* Qwt Widget Library
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 Uwe Rathmann
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the Qwt License, Version 1.0
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*****************************************************************************/
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#ifndef QWT_MAGNIFIER_H
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#define QWT_MAGNIFIER_H 1
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#include "qwt_global.h"
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#include <qobject.h>
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class QWidget;
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class QMouseEvent;
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class QWheelEvent;
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class QKeyEvent;
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/*!
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\brief QwtMagnifier provides zooming, by magnifying in steps.
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Using QwtMagnifier a plot can be zoomed in/out in steps using
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keys, the mouse wheel or moving a mouse button in vertical direction.
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*/
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class QWT_EXPORT QwtMagnifier: public QObject
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{
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Q_OBJECT
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public:
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explicit QwtMagnifier( QWidget * );
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virtual ~QwtMagnifier();
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QWidget *parentWidget();
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const QWidget *parentWidget() const;
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void setEnabled( bool );
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bool isEnabled() const;
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// mouse
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void setMouseFactor( double );
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double mouseFactor() const;
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void setMouseButton( Qt::MouseButton, Qt::KeyboardModifiers = Qt::NoModifier );
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void getMouseButton( Qt::MouseButton &, Qt::KeyboardModifiers & ) const;
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// mouse wheel
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void setWheelFactor( double );
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double wheelFactor() const;
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void setWheelModifiers( Qt::KeyboardModifiers );
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Qt::KeyboardModifiers wheelModifiers() const;
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// keyboard
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void setKeyFactor( double );
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double keyFactor() const;
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void setZoomInKey( int key, Qt::KeyboardModifiers = Qt::NoModifier );
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void getZoomInKey( int &key, Qt::KeyboardModifiers & ) const;
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void setZoomOutKey( int key, Qt::KeyboardModifiers = Qt::NoModifier );
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void getZoomOutKey( int &key, Qt::KeyboardModifiers & ) const;
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virtual bool eventFilter( QObject *, QEvent * );
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protected:
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/*!
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Rescale the parent widget
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\param factor Scale factor
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*/
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virtual void rescale( double factor ) = 0;
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virtual void widgetMousePressEvent( QMouseEvent * );
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virtual void widgetMouseReleaseEvent( QMouseEvent * );
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virtual void widgetMouseMoveEvent( QMouseEvent * );
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virtual void widgetWheelEvent( QWheelEvent * );
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virtual void widgetKeyPressEvent( QKeyEvent * );
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virtual void widgetKeyReleaseEvent( QKeyEvent * );
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private:
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class PrivateData;
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PrivateData *d_data;
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};
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#endif
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