blob: f2f4bbd982458de2dceeb129d9db1a2c3834d649 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/* -*- 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;
/*!
\brief QwtMagnifier provides zooming, by magnifying in steps.
Using QwtMagnifier a plot can be zoomed in/out in steps using
keys, the mouse wheel or moving a mouse button in vertical direction.
*/
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( int button, int buttonState = Qt::NoButton );
void getMouseButton( int &button, int &buttonState ) const;
// mouse wheel
void setWheelFactor( double );
double wheelFactor() const;
void setWheelButtonState( int buttonState );
int wheelButtonState() const;
// keyboard
void setKeyFactor( double );
double keyFactor() const;
void setZoomInKey( int key, int modifiers );
void getZoomInKey( int &key, int &modifiers ) const;
void setZoomOutKey( int key, int modifiers );
void getZoomOutKey( int &key, int &modifiers ) const;
virtual bool eventFilter( QObject *, QEvent * );
protected:
/*!
Rescale the parent widget
\param factor Scale factor
*/
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
|
