You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
3 weeks ago
|
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
|
||
|
|
* QwtPolar Widget Library
|
||
|
|
* Copyright (C) 2008 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_POLAR_MAGNIFIER_H
|
||
|
|
#define QWT_POLAR_MAGNIFIER_H 1
|
||
|
|
|
||
|
|
#include "qwt_polar_global.h"
|
||
|
|
#include "qwt_magnifier.h"
|
||
|
|
|
||
|
|
class QwtPolarPlot;
|
||
|
|
class QwtPolarCanvas;
|
||
|
|
|
||
|
|
/*!
|
||
|
|
\brief QwtPolarMagnifier provides zooming, by magnifying in steps.
|
||
|
|
|
||
|
|
Using QwtPlotMagnifier a plot can be zoomed in/out in steps using
|
||
|
|
keys, the mouse wheel or moving a mouse button in vertical direction.
|
||
|
|
|
||
|
|
Together with QwtPolarPanner it is possible to implement
|
||
|
|
an individual navigation of the plot canvas.
|
||
|
|
|
||
|
|
\sa QwtPolarPanner, QwtPolarPlot, QwtPolarCanvas
|
||
|
|
*/
|
||
|
|
|
||
|
|
class QWT_POLAR_EXPORT QwtPolarMagnifier: public QwtMagnifier
|
||
|
|
{
|
||
|
|
Q_OBJECT
|
||
|
|
|
||
|
|
public:
|
||
|
|
explicit QwtPolarMagnifier( QwtPolarCanvas * );
|
||
|
|
virtual ~QwtPolarMagnifier();
|
||
|
|
|
||
|
|
void setUnzoomKey( int key, int modifiers );
|
||
|
|
void getUnzoomKey( int &key, int &modifiers ) const;
|
||
|
|
|
||
|
|
QwtPolarPlot *plot();
|
||
|
|
const QwtPolarPlot *plot() const;
|
||
|
|
|
||
|
|
QwtPolarCanvas *canvas();
|
||
|
|
const QwtPolarCanvas *canvas() const;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
virtual void rescale( double factor );
|
||
|
|
void unzoom();
|
||
|
|
|
||
|
|
virtual void widgetKeyPressEvent( QKeyEvent * );
|
||
|
|
|
||
|
|
private:
|
||
|
|
class PrivateData;
|
||
|
|
PrivateData *d_data;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|