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
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2008 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
// Code by: Jeremy Moles (cubicool) 2007-2008
#ifndef OSGWIDGET_VIEWER_EVENT_HANDLERS
#define OSGWIDGET_VIEWER_EVENT_HANDLERS
#include <osgGA/GUIEventAdapter>
#include <osgGA/GUIEventHandler>
#include <osgWidget/WindowManager>
// NOTE! These are all just examples of some default event handlers--they are not
// required. You are more than welcome to provide your own even handlers that
// communicate with a WindowManager using it's public API.
namespace osgWidget {
// This handles the pressing/moving of mouse buttons, etc.
class OSGWIDGET_EXPORT MouseHandler: public osgGA::GUIEventHandler
{
public:
MouseHandler(WindowManager*);
virtual bool handle(
const osgGA::GUIEventAdapter&,
osgGA::GUIActionAdapter&,
osg::Object*,
osg::NodeVisitor*
);
typedef bool (MouseHandler::*MouseAction)(float, float, int);
typedef bool (WindowManager::*MouseEvent)(float, float);
protected:
osg::observer_ptr<WindowManager> _wm;
bool _handleMousePush (float, float, int);
bool _handleMouseRelease (float, float, int);
bool _handleMouseDoubleClick (float, float, int);
bool _handleMouseDrag (float, float, int);
bool _handleMouseMove (float, float, int);
bool _handleMouseScroll (float, float, int);
MouseAction _isMouseEvent (osgGA::GUIEventAdapter::EventType) const;
bool _doMouseEvent (float, float, MouseEvent);
};
// This handles the forwarding of keypress events.
class OSGWIDGET_EXPORT KeyboardHandler: public osgGA::GUIEventHandler
{
public:
KeyboardHandler(WindowManager*);
virtual bool handle(
const osgGA::GUIEventAdapter&,
osgGA::GUIActionAdapter&,
osg::Object*,
osg::NodeVisitor*
);
protected:
osg::observer_ptr<WindowManager> _wm;
};
// This class offers a default kind of handling for resizing.
class OSGWIDGET_EXPORT ResizeHandler: public osgGA::GUIEventHandler
{
public:
ResizeHandler(WindowManager*, osg::Camera* = 0);
virtual bool handle(
const osgGA::GUIEventAdapter&,
osgGA::GUIActionAdapter&,
osg::Object*,
osg::NodeVisitor*
);
protected:
osg::observer_ptr<WindowManager> _wm;
osg::observer_ptr<osg::Camera> _camera;
};
// This class provides a hotkey that lets you toggle back and forth between
// a camera and setting the CameraManipulator's home point.
class OSGWIDGET_EXPORT CameraSwitchHandler: public osgGA::GUIEventHandler
{
public:
CameraSwitchHandler(WindowManager*, osg::Camera*);
virtual bool handle(
const osgGA::GUIEventAdapter&,
osgGA::GUIActionAdapter&,
osg::Object*,
osg::NodeVisitor*
);
protected:
osg::observer_ptr<WindowManager> _wm;
osg::observer_ptr<osg::Camera> _camera;
osg::ref_ptr<osg::Node> _oldNode;
};
}
#endif
|
