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SoSubAction.h
00001 #ifndef COIN_SOSUBACTION_H
00002 #define COIN_SOSUBACTION_H
00003 
00004 /**************************************************************************\
00005  *
00006  *  This file is part of the Coin 3D visualization library.
00007  *  Copyright (C) by Kongsberg Oil & Gas Technologies.
00008  *
00009  *  This library is free software; you can redistribute it and/or
00010  *  modify it under the terms of the GNU General Public License
00011  *  ("GPL") version 2 as published by the Free Software Foundation.
00012  *  See the file LICENSE.GPL at the root directory of this source
00013  *  distribution for additional information about the GNU GPL.
00014  *
00015  *  For using Coin with software that can not be combined with the GNU
00016  *  GPL, and for taking advantage of the additional benefits of our
00017  *  support services, please contact Kongsberg Oil & Gas Technologies
00018  *  about acquiring a Coin Professional Edition License.
00019  *
00020  *  See http://www.coin3d.org/ for more information.
00021  *
00022  *  Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
00023  *  http://www.sim.no/  sales@sim.no  coin-support@coin3d.org
00024  *
00025 \**************************************************************************/
00026 
00027 #ifndef COIN_INTERNAL
00028 // Added to be Inventor compliant.
00029 #include <Inventor/SbString.h>
00030 #include <Inventor/actions/SoAction.h>
00031 #endif // COIN_INTERNAL
00032 #include <Inventor/C/tidbits.h>
00033 
00034 // *************************************************************************
00035 
00036 #define SO_ACTION_ADD_METHOD(_nodeclass_, _method_) \
00037   do { \
00038     addMethod(_nodeclass_::getClassTypeId(), (SoActionMethod)_method_); \
00039   } while (0)
00040 
00041 // *************************************************************************
00042 
00043 #define SO_ACTION_CONSTRUCTOR(_classname_) \
00044   do { \
00045     _classname_::traversalMethods = this->methods; \
00046   } while (0)
00047 
00048 // *************************************************************************
00049 
00050 #define SO_ACTION_HEADER(_classname_) \
00051 public: \
00052   virtual SoType getTypeId(void) const; \
00053   static SoType getClassTypeId(void); \
00054  \
00055   static void addMethod(const SoType type, SoActionMethod method); \
00056  \
00057   static void enableElement(const SoType type, const int stackindex); \
00058  \
00059 protected: \
00060   virtual const SoEnabledElementsList & getEnabledElements(void) const; \
00061   /* These two methods are not available in the original OIV API. */ \
00062   /* They have been added as a work-around for Win32 DLL headaches. */ \
00063   /* See further explanation below. 20000808 mortene. */ \
00064   static SoEnabledElementsList * getClassEnabledElements(void); \
00065   static SoActionMethodList * getClassActionMethods(void); \
00066  \
00067 private: \
00068   /* The enabledElements and methods variables are protected in */ \
00069   /* the original OIV API. This is not such a good idea, since */ \
00070   /* exposed static class member variables is a major grievance */ \
00071   /* with regard to Win32 DLLs. */ \
00072   static void atexit_cleanup(void); \
00073   static SoEnabledElementsList * enabledElements; \
00074   static SoActionMethodList * methods; \
00075   static SoType classTypeId
00076 
00077 // *************************************************************************
00078 
00079 #define SO_ACTION_SOURCE(_classname_) \
00080 SoEnabledElementsList * _classname_::enabledElements = NULL; \
00081 SoActionMethodList * _classname_::methods = NULL; \
00082 SoEnabledElementsList * _classname_::getClassEnabledElements(void) { return _classname_::enabledElements; } \
00083 SoActionMethodList * _classname_::getClassActionMethods(void) { return _classname_::methods; } \
00084 SoType _classname_::classTypeId STATIC_SOTYPE_INIT; \
00085 SoType _classname_::getClassTypeId(void) { return _classname_::classTypeId; } \
00086 SoType _classname_::getTypeId(void) const { return _classname_::classTypeId; } \
00087 const SoEnabledElementsList & _classname_::getEnabledElements(void) const \
00088 { \
00089   assert(_classname_::enabledElements); \
00090   return *_classname_::enabledElements; \
00091 } \
00092 void \
00093 _classname_::addMethod(const SoType type, SoActionMethod method) \
00094 { \
00095   assert(_classname_::methods); \
00096   _classname_::methods->addMethod(type, method); \
00097 } \
00098 void \
00099 _classname_::enableElement(const SoType type, const int stackindex) \
00100 { \
00101   assert(_classname_::enabledElements); \
00102   _classname_::enabledElements->enable(type, stackindex); \
00103 } \
00104 void \
00105 _classname_::atexit_cleanup(void) \
00106 { \
00107   delete _classname_::enabledElements; \
00108   _classname_::enabledElements = NULL; \
00109   delete _classname_::methods; \
00110   _classname_::methods = NULL; \
00111   _classname_::classTypeId STATIC_SOTYPE_INIT; \
00112 }
00113 
00114 // *************************************************************************
00115 
00116 #define SO_ACTION_INIT_CLASS(_classname_, _parentclassname_) \
00117   do { \
00118     assert(_classname_::getClassTypeId() == SoType::badType()); \
00119     assert(_parentclassname_::getClassTypeId() != SoType::badType()); \
00120     _classname_::classTypeId = SoType::createType(_parentclassname_::getClassTypeId(), SO__QUOTE(_classname_)); \
00121     _classname_::enabledElements = new SoEnabledElementsList(_parentclassname_::getClassEnabledElements()); \
00122     _classname_::methods = new SoActionMethodList(_parentclassname_::getClassActionMethods()); \
00123     cc_coin_atexit_static_internal(reinterpret_cast<coin_atexit_f *>(_classname_::atexit_cleanup));  \
00124   } while (0)
00125 
00126 // *************************************************************************
00127 
00128 #endif // !COIN_SOSUBACTION_H

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