Open Inventor Reference
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00001 /* 00002 * 00003 * Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved. 00004 * 00005 * This library is free software; you can redistribute it and/or 00006 * modify it under the terms of the GNU Lesser General Public 00007 * License as published by the Free Software Foundation; either 00008 * version 2.1 of the License, or (at your option) any later version. 00009 * 00010 * This library is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 * Lesser General Public License for more details. 00014 * 00015 * Further, this software is distributed without any warranty that it is 00016 * free of the rightful claim of any third person regarding infringement 00017 * or the like. Any license provided herein, whether implied or 00018 * otherwise, applies only to this software file. Patent licenses, if 00019 * any, provided herein do not apply to combinations of this program with 00020 * other software, or any other product whatsoever. 00021 * 00022 * You should have received a copy of the GNU Lesser General Public 00023 * License along with this library; if not, write to the Free Software 00024 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00025 * 00026 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 00027 * Mountain View, CA 94043, or: 00028 * 00029 * http://www.sgi.com 00030 * 00031 * For further information regarding this notice, see: 00032 * 00033 * http://oss.sgi.com/projects/GenInfo/NoticeExplan/ 00034 * 00035 */ 00036 00037 00038 /* 00039 * Copyright (C) 1990,91 Silicon Graphics, Inc. 00040 * 00041 _______________________________________________________________________ 00042 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00043 | 00044 | $Revision: 1.1.1.1 $ 00045 | 00046 | Description: 00047 | This file defines some macros that implement things common to 00048 | many subclasses of SoElement. They may be used to make SoElement 00049 | subclassing easier. In all of the macros, the "className" 00050 | parameter refers to the name of the element subclass. 00051 | 00052 | Defined macros: 00053 | 00054 | Within class header: 00055 | 00056 | SO_ELEMENT_ABSTRACT_HEADER(className) 00057 | SO_ELEMENT_HEADER(className) 00058 | 00059 | Within class source: 00060 | 00061 | At file scope: 00062 | 00063 | SO_ELEMENT_ABSTRACT_SOURCE(className) 00064 | SO_ELEMENT_SOURCE(className) 00065 | 00066 | Class initialization (in initClass): 00067 | 00068 | SO_ELEMENT_INIT_ABSTRACT_CLASS() 00069 | SO_ELEMENT_INIT_CLASS() 00070 | 00071 | 00072 | Author(s) : Paul S. Strauss 00073 | 00074 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00075 _______________________________________________________________________ 00076 */ 00077 00078 #ifndef _SO_SUB_ELEMENT_ 00079 #define _SO_SUB_ELEMENT_ 00080 00081 #include <Inventor/elements/SoElement.h> 00082 00083 00089 00095 00099 #define SO_ELEMENT_ABSTRACT_HEADER(className) \ 00100 public: \ 00101 static SoType getClassTypeId() { return classTypeId; } \ 00102 static int getClassStackIndex() { return classStackIndex; } \ 00103 protected: \ 00104 static int classStackIndex; \ 00105 className(); \ 00106 private: \ 00107 static SoType classTypeId 00108 00112 #define SO_ELEMENT_HEADER(className) \ 00113 SO_ELEMENT_ABSTRACT_HEADER(className); \ 00114 private: \ 00115 static void *createInstance() 00116 00121 00127 00128 #define SO__ELEMENT_ABSTRACT_VARS(className) \ 00129 SoType className::classTypeId; \ 00130 int className::classStackIndex 00131 00132 #define SO__ELEMENT_VARS(className) \ 00133 SO__ELEMENT_ABSTRACT_VARS(className) 00134 00138 #define SO__ELEMENT_ABSTRACT_METHODS(className) \ 00139 \ 00140 className::className() \ 00141 { \ 00142 } 00143 00147 #define SO__ELEMENT_METHODS(className) \ 00148 \ 00149 className::className() \ 00150 { \ 00151 setTypeId(classTypeId); \ 00152 setStackIndex(classStackIndex); \ 00153 } \ 00154 \ 00155 void * \ 00156 className::createInstance() \ 00157 { \ 00158 return new className; \ 00159 } 00160 00166 00167 #define SO_ELEMENT_ABSTRACT_SOURCE(className) \ 00168 SO__ELEMENT_ABSTRACT_VARS(className); \ 00169 SO__ELEMENT_ABSTRACT_METHODS(className) 00170 00171 #define SO_ELEMENT_SOURCE(className) \ 00172 SO__ELEMENT_VARS(className); \ 00173 SO__ELEMENT_METHODS(className) 00174 00182 00183 #define SO_ELEMENT_INIT_ABSTRACT_CLASS(className,parentClass) { \ 00184 int _value_false= 0; \ 00185 do { \ 00186 classTypeId = SoType::createType(parentClass::getClassTypeId(), \ 00187 SO__QUOTE(className), \ 00188 NULL); \ 00189 if (parentClass::classStackIndex < 0) \ 00190 classStackIndex = createStackIndex(classTypeId); \ 00191 else \ 00192 classStackIndex = parentClass::classStackIndex; \ 00193 } while (_value_false); \ 00194 } 00195 00196 #define SO_ELEMENT_INIT_CLASS(className,parentClass) { \ 00197 int _value_false= 0; \ 00198 do { \ 00199 classTypeId = SoType::createType(parentClass::getClassTypeId(), \ 00200 SO__QUOTE(className), \ 00201 &className::createInstance); \ 00202 if (parentClass::classStackIndex < 0) \ 00203 classStackIndex = createStackIndex(classTypeId); \ 00204 else \ 00205 classStackIndex = parentClass::classStackIndex; \ 00206 } while (_value_false); \ 00207 } 00208 00209 00210 #endif /* _SO_SUB_ELEMENT_ */