Qwt User's Guide 6.3.0
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qwt_magnifier.h
1/******************************************************************************
2 * Qwt Widget Library
3 * Copyright (C) 1997 Josef Wilgen
4 * Copyright (C) 2002 Uwe Rathmann
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the Qwt License, Version 1.0
8 *****************************************************************************/
9
10#ifndef QWT_MAGNIFIER_H
11#define QWT_MAGNIFIER_H
12
13#include "qwt_global.h"
14#include <qobject.h>
15
16class QWidget;
17class QMouseEvent;
18class QWheelEvent;
19class QKeyEvent;
20
27class QWT_EXPORT QwtMagnifier : public QObject
28{
29 Q_OBJECT
30
31 public:
32 explicit QwtMagnifier( QWidget* );
33 virtual ~QwtMagnifier();
34
35 QWidget* parentWidget();
36 const QWidget* parentWidget() const;
37
38 void setEnabled( bool );
39 bool isEnabled() const;
40
41 // mouse
42 void setMouseFactor( double );
43 double mouseFactor() const;
44
45 void setMouseButton( Qt::MouseButton, Qt::KeyboardModifiers = Qt::NoModifier );
46 void getMouseButton( Qt::MouseButton&, Qt::KeyboardModifiers& ) const;
47
48 // mouse wheel
49 void setWheelFactor( double );
50 double wheelFactor() const;
51
52 void setWheelModifiers( Qt::KeyboardModifiers );
53 Qt::KeyboardModifiers wheelModifiers() const;
54
55 // keyboard
56 void setKeyFactor( double );
57 double keyFactor() const;
58
59 void setZoomInKey( int key, Qt::KeyboardModifiers = Qt::NoModifier );
60 void getZoomInKey( int& key, Qt::KeyboardModifiers& ) const;
61
62 void setZoomOutKey( int key, Qt::KeyboardModifiers = Qt::NoModifier );
63 void getZoomOutKey( int& key, Qt::KeyboardModifiers& ) const;
64
65 virtual bool eventFilter( QObject*, QEvent* ) QWT_OVERRIDE;
66
67 protected:
72 virtual void rescale( double factor ) = 0;
73
74 virtual void widgetMousePressEvent( QMouseEvent* );
75 virtual void widgetMouseReleaseEvent( QMouseEvent* );
76 virtual void widgetMouseMoveEvent( QMouseEvent* );
77 virtual void widgetWheelEvent( QWheelEvent* );
78 virtual void widgetKeyPressEvent( QKeyEvent* );
79 virtual void widgetKeyReleaseEvent( QKeyEvent* );
80
81 private:
82 class PrivateData;
83 PrivateData* m_data;
84};
85
86#endif
QwtMagnifier
QwtMagnifier provides zooming, by magnifying in steps.
Definition qwt_magnifier.h:28
QwtMagnifier::rescale
virtual void rescale(double factor)=0