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SoEventCallback.h
1 #ifndef COIN_SOEVENTCALLBACK_H
2 #define COIN_SOEVENTCALLBACK_H
3 
4 /**************************************************************************\
5  *
6  * This file is part of the Coin 3D visualization library.
7  * Copyright (C) 1998-2007 by Systems in Motion. All rights reserved.
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13  * distribution for additional information about the GNU GPL.
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26 
27 #include <Inventor/nodes/SoSubNode.h>
28 #include <Inventor/lists/SbList.h>
29 
30 #ifndef COIN_INTERNAL
31 // Added for Inventor compliance
32 #include <Inventor/actions/SoHandleEventAction.h>
33 #endif // !COIN_INTERNAL
34 
35 class SoEventCallback;
36 class SoPath;
37 class SoEvent;
38 class SoPickedPoint;
40 
41 typedef void SoEventCallbackCB(void * userdata, SoEventCallback * node);
42 
43 class COIN_DLL_API SoEventCallback : public SoNode {
44  typedef SoNode inherited;
45 
46  SO_NODE_HEADER(SoEventCallback);
47 
48 public:
49  static void initClass(void);
50  SoEventCallback(void);
51 
52  void setPath(SoPath * path);
53  const SoPath * getPath(void);
54 
55  void addEventCallback(SoType eventtype, SoEventCallbackCB * f,
56  void * userdata = NULL);
57  void removeEventCallback(SoType eventtype, SoEventCallbackCB * f,
58  void * userdata = NULL);
59 
60  SoHandleEventAction * getAction(void) const;
61  const SoEvent * getEvent(void) const;
62  const SoPickedPoint * getPickedPoint(void) const;
63 
64  void setHandled(void);
65  SbBool isHandled(void) const;
66 
67  void grabEvents(void);
68  void releaseEvents(void);
69 
70 protected:
71  virtual ~SoEventCallback();
72 
73  virtual void handleEvent(SoHandleEventAction * action);
74 
75 private:
76 
77  struct CallbackInfo {
78  SoEventCallbackCB * func;
79  SoType eventtype;
80  void * userdata;
81 
82  // AIX native compiler xlC needs equality and inequality operators
83  // to compile templates where these operators are referenced (even
84  // if they are actually never used).
85 
86  SbBool operator==(const CallbackInfo & cbi) {
87  return this->func == cbi.func && this->eventtype == cbi.eventtype && this->userdata == cbi.userdata;
88  }
89  SbBool operator!=(const CallbackInfo & cbi) {
90  return !(*this == cbi);
91  }
92  };
93 
94  SbList<CallbackInfo> callbacks;
95  SoHandleEventAction * heaction;
96  SoPath * path;
97 
98 };
99 
100 #endif // !COIN_SOEVENTCALLBACK_H
The SoBase class is the top-level superclass for a number of class-hierarchies.SoBase provides the ba...
Definition: SoBase.h:41
The SoNode class is the base class for nodes used in scene graphs.Coin is a retained mode 3D visualiz...
Definition: SoNode.h:47
The SoPath class is a container class for traversal path descriptions.SoPath objects contain a list o...
Definition: SoPath.h:43
The SoHandleEventAction class distributes user events to the scene.This is the action used by the GUI...
Definition: SoHandleEventAction.h:36
The SoPickedPoint class is used for specifying picked points.It holds miscellaneous information about...
Definition: SoPickedPoint.h:39
The SoEventCallback class provides functionality for catching events.Use SoEventCallback nodes in the...
Definition: SoEventCallback.h:43
The SoEvent class is the base class for all Coin events.Coin contains its own set of event classes...
Definition: SoEvent.h:34
The SoType class is the basis for the run-time type system in Coin.Many of the classes in the Coin li...
Definition: SoType.h:50
virtual void handleEvent(SoHandleEventAction *action)
Definition: SoNode.cpp:1031

Copyright © 1998-2007 by Systems in Motion AS. All rights reserved.

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