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SoSubAction.h

00001 /**************************************************************************\ 00002 * 00003 * This file is part of the Coin 3D visualization library. 00004 * Copyright (C) 1998-2003 by Systems in Motion. All rights reserved. 00005 * 00006 * This library is free software; you can redistribute it and/or 00007 * modify it under the terms of the GNU Lesser General Public License 00008 * version 2.1 as published by the Free Software Foundation. See the 00009 * file LICENSE.LGPL at the root directory of the distribution for 00010 * more details. 00011 * 00012 * If you want to use Coin for applications not compatible with the 00013 * LGPL, please contact SIM to acquire a Professional Edition license. 00014 * 00015 * Systems in Motion, Teknobyen, Abels Gate 5, 7030 Trondheim, NORWAY 00016 * http://www.sim.no support@sim.no Voice: +47 22114160 Fax: +47 22207097 00017 * 00018 \**************************************************************************/ 00019 00020 #ifndef COIN_SOSUBACTION_H 00021 #define COIN_SOSUBACTION_H 00022 00023 #ifndef COIN_INTERNAL 00024 // Added to be Inventor compliant. 00025 #include <Inventor/SbString.h> 00026 #include <Inventor/actions/SoAction.h> 00027 #else // !COIN_INTERNAL 00028 #include <Inventor/SbName.h> 00029 #endif // COIN_INTERNAL 00030 00031 00032 #define SO_ACTION_ADD_METHOD(_nodeclass_, _method_) \ 00033 do { \ 00034 addMethod(_nodeclass_::getClassTypeId(), (SoActionMethod)_method_); \ 00035 } while (0) 00036 00037 00038 #define SO_ACTION_CONSTRUCTOR(_classname_) \ 00039 do { \ 00040 _classname_::traversalMethods = this->methods; \ 00041 } while (0) 00042 00043 00044 #define SO_ACTION_HEADER(_classname_) \ 00045 public: \ 00046 virtual SoType getTypeId(void) const; \ 00047 static SoType getClassTypeId(void); \ 00048 static void addMethod(const SoType type, SoActionMethod method); \ 00049 static void enableElement(const SoType type, const int stackindex); \ 00050 \ 00051 protected: \ 00052 virtual const SoEnabledElementsList & getEnabledElements(void) const; \ 00053 /* These two methods are not available in the original OIV API. */ \ 00054 /* They have been added as a work-around for Win32 DLL headaches. */ \ 00055 /* See further explanation below. 20000808 mortene. */ \ 00056 static SoEnabledElementsList * getClassEnabledElements(void); \ 00057 static SoActionMethodList * getClassActionMethods(void); \ 00058 \ 00059 private: \ 00060 /* The enabledElements and methods variables are protected in */ \ 00061 /* the original OIV API. This is not such a good idea, since */ \ 00062 /* exposed static class member variables is a major grievance */ \ 00063 /* with regard to Win32 DLLs. */ \ 00064 static SoEnabledElementsList * enabledElements; \ 00065 static SoActionMethodList * methods; \ 00066 static SoType classTypeId 00067 00068 00069 #define SO_ACTION_SOURCE(_classname_) \ 00070 SoEnabledElementsList * _classname_::enabledElements = NULL; \ 00071 SoActionMethodList * _classname_::methods = NULL; \ 00072 SoEnabledElementsList * _classname_::getClassEnabledElements(void) { return _classname_::enabledElements; } \ 00073 SoActionMethodList * _classname_::getClassActionMethods(void) { return _classname_::methods; } \ 00074 /* Don't set value explicitly to SoType::badType(), to avoid a bug in */ \ 00075 /* Sun CC v4.0. (Bitpattern 0x0000 equals SoType::badType()). */ \ 00076 SoType _classname_::classTypeId; \ 00077 SoType _classname_::getClassTypeId(void) { return _classname_::classTypeId; } \ 00078 SoType _classname_::getTypeId(void) const { return _classname_::classTypeId; } \ 00079 const SoEnabledElementsList & _classname_::getEnabledElements(void) const \ 00080 { \ 00081 assert(_classname_::enabledElements); \ 00082 return *_classname_::enabledElements; \ 00083 } \ 00084 void \ 00085 _classname_::addMethod(const SoType type, SoActionMethod method) \ 00086 { \ 00087 assert(_classname_::methods); \ 00088 _classname_::methods->addMethod(type, method); \ 00089 } \ 00090 void \ 00091 _classname_::enableElement(const SoType type, const int stackindex) \ 00092 { \ 00093 assert(_classname_::enabledElements); \ 00094 _classname_::enabledElements->enable(type, stackindex); \ 00095 } 00096 00097 00098 #define SO_ACTION_INIT_CLASS(_classname_, _parentclassname_) \ 00099 do { \ 00100 assert(_classname_::getClassTypeId() == SoType::badType()); \ 00101 assert(_parentclassname_::getClassTypeId() != SoType::badType()); \ 00102 _classname_::classTypeId = SoType::createType(_parentclassname_::getClassTypeId(), SO__QUOTE(_classname_)); \ 00103 _classname_::enabledElements = new SoEnabledElementsList(_parentclassname_::getClassEnabledElements()); \ 00104 _classname_::methods = new SoActionMethodList(_parentclassname_::getClassActionMethods()); \ 00105 } while (0) 00106 00107 00108 #endif // !COIN_SOSUBACTION_H

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