openscenegraph
Device
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1/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
2 *
3 * This library is open source and may be redistributed and/or modified under
4 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
5 * (at your option) any later version. The full license is in LICENSE file
6 * included with this distribution, and on the openscenegraph.org website.
7 *
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * OpenSceneGraph Public License for more details.
12*/
13
14#ifndef OSGGA_EVENTSOURCE
15#define OSGGA_EVENTSOURCE 1
16
17#include <osgGA/EventQueue>
18
19namespace osgGA {
20
21/**
22 * Device base class from abstracting away from devices/windows that can generate events.
23 */
24class OSGGA_EXPORT Device : public osg::Object
25{
26 public:
27 enum Capabilities
28 {
29 UNKNOWN = 0,
30 RECEIVE_EVENTS = 1,
31 SEND_EVENTS = 2
32 };
33
34 Device();
35 Device(const Device& es, const osg::CopyOp& copyop);
36
37 META_Object(osgGA,Device);
38
39 int getCapabilities() const { return _capabilities; }
40
41 virtual bool checkEvents() { return _eventQueue.valid() ? !(getEventQueue()->empty()) : false; }
42 virtual void sendEvent(const Event& ea);
43 virtual void sendEvents(const EventQueue::Events& events);
44
45 void setEventQueue(osgGA::EventQueue* eventQueue) { _eventQueue = eventQueue; }
46 osgGA::EventQueue* getEventQueue() { return _eventQueue.get(); }
47 const osgGA::EventQueue* getEventQueue() const { return _eventQueue.get(); }
48
49 protected:
50 void setCapabilities(int capabilities) { _capabilities = capabilities; }
51
52 virtual ~Device();
53
54 /** Prevent unwanted copy operator.*/
55 Device& operator = (const Device&) { return *this; }
56
57 osg::ref_ptr<osgGA::EventQueue> _eventQueue;
58
59 private:
60 int _capabilities;
61
62};
63
64}
65
66#endif