Panda3D

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cPointerCallbackObject.h
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1/**
2 * PANDA 3D SOFTWARE
3 * Copyright (c) Carnegie Mellon University. All rights reserved.
4 *
5 * All use of this software is subject to the terms of the revised BSD
6 * license. You should have received a copy of this license along
7 * with this source code in a file named "LICENSE."
8 *
9 * @file cPointerCallbackObject.h
10 * @author drose
11 * @date 2009-03-13
12 */
13
14#ifndef CPOINTERCALLBACKOBJECT_H
15#define CPOINTERCALLBACKOBJECT_H
16
17#include "pandabase.h"
18#include "callbackObject.h"
19
20/**
21 * This is a specialization on CallbackObject to allow association with a
22 * C-style function pointer and a void * parameter.
23 */
24 class EXPCL_PANDA_PUTIL CPointerCallbackObject : public CallbackObject {
25 public:
26 typedef void CallbackFunction(CallbackData *cbdata, void *data);
27 INLINE CPointerCallbackObject(CallbackFunction *func, void *data);
28 ALLOC_DELETED_CHAIN(CPointerCallbackObject);
29
30 public:
31 virtual void do_callback(CallbackData *cbdata);
32
33 private:
34 CallbackFunction *_func;
35 void *_data;
36
37 public:
38 static TypeHandle get_class_type() {
39 return _type_handle;
40 }
41 static void init_type() {
42 CallbackObject::init_type();
43 register_type(_type_handle, "CPointerCallbackObject",
44 CallbackObject::get_class_type());
45 }
46 virtual TypeHandle get_type() const {
47 return get_class_type();
48 }
49 virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
50
51 private:
52 static TypeHandle _type_handle;
53};
54
55#include "cPointerCallbackObject.I"
56
57#endif
cPointerCallbackObject.I
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
callbackObject.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
CallbackData
This is a generic data block that is passed along to a CallbackObject when a callback is made.
Definition callbackData.h:29
CallbackObject::do_callback
virtual void do_callback(CallbackData *cbdata)
This method called when the callback is triggered; it *replaces* the original function.
Definition callbackObject.cxx:33
TypeHandle
TypeHandle is the identifier used to differentiate C++ class types.
Definition typeHandle.h:81
pandabase.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
register_type
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...
Definition register_type.I:22