00001 /*======================================================================= 00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States. Use of a copyright notice is precautionary only and does not 00007 * imply publication or disclosure. 00008 * 00009 * U.S. GOVERNMENT RESTRICTED RIGHTS LEGEND: 00010 * Use, duplication or disclosure by the Government is subject to restrictions 00011 * as set forth in FAR 52.227.19(c)(2) or subparagraph (c)(1)(ii) of the Rights 00012 * in Technical Data and Computer Software clause at DFARS 252.227-7013 and/or 00013 * in similar or successor clauses in the FAR, or the DOD or NASA FAR 00014 * Supplement. Contractor/manufacturer is Silicon Graphics, Inc., 00015 * 2011 N. Shoreline Blvd. Mountain View, CA 94039-7311. 00016 * 00017 * THE CONTENT OF THIS WORK CONTAINS CONFIDENTIAL AND PROPRIETARY 00018 * INFORMATION OF SILICON GRAPHICS, INC. ANY DUPLICATION, MODIFICATION, 00019 * DISTRIBUTION, OR DISCLOSURE IN ANY FORM, IN WHOLE, OR IN PART, IS STRICTLY 00020 * PROHIBITED WITHOUT THE PRIOR EXPRESS WRITTEN PERMISSION OF SILICON 00021 * GRAPHICS, INC. 00022 **=======================================================================*/ 00023 /*======================================================================= 00024 ** Author : Paul S. Strauss (MMM yyyy) 00025 ** Modified by : Gavin Bell (MMM yyyy) 00026 **=======================================================================*/ 00027 /*======================================================================= 00028 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.), *** 00029 *** AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT. *** 00030 *** *** 00031 *** REPRODUCTION, DISCLOSURE, OR USE, IN WHOLE OR IN PART, OTHER THAN AS *** 00032 *** SPECIFIED IN THE LICENSE ARE NOT TO BE UNDERTAKEN EXCEPT WITH PRIOR *** 00033 *** WRITTEN AUTHORIZATION OF FEI S.A.S. *** 00034 *** *** 00035 *** RESTRICTED RIGHTS LEGEND *** 00036 *** USE, DUPLICATION, OR DISCLOSURE BY THE GOVERNMENT OF THE CONTENT OF THIS *** 00037 *** WORK OR RELATED DOCUMENTATION IS SUBJECT TO RESTRICTIONS AS SET FORTH IN *** 00038 *** SUBPARAGRAPH (C)(1) OF THE COMMERCIAL COMPUTER SOFTWARE RESTRICTED RIGHT *** 00039 *** CLAUSE AT FAR 52.227-19 OR SUBPARAGRAPH (C)(1)(II) OF THE RIGHTS IN *** 00040 *** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 52.227-7013. *** 00041 *** *** 00042 *** COPYRIGHT (C) 1996-2020 BY FEI S.A.S, *** 00043 *** BORDEAUX, FRANCE *** 00044 *** ALL RIGHTS RESERVED *** 00045 **=======================================================================*/ 00046 /*======================================================================= 00047 ** Modified by : VSG (MMM YYYY) 00048 **=======================================================================*/ 00049 00050 #ifndef _SO_ENABLED_ELEMENTS_LIST_H_ 00051 #define _SO_ENABLED_ELEMENTS_LIST_H_ 00052 00054 // 00055 // Class: SoEnabledElementsList 00056 // 00057 // Internal class. A list of elements enabled for a given action 00058 // class. Lists of elements can be merged, allowing an action class 00059 // to inherit enabled elements from its parent class. 00060 // 00062 00063 #ifndef HIDDEN_FROM_DOC 00064 00065 #include <Inventor/SoType.h> 00066 00067 SoEnabledElementsList 00068 { 00069 00070 public: 00071 // Constructor 00072 SoEnabledElementsList(SoEnabledElementsList *parentList); 00073 00074 // Returns list of elements. This automatically merges the 00075 // elements with elements enabled in the parentList. 00076 const SoTypeList & getElements() const; 00077 00078 // Adds an element to the list if it's not already in it 00079 void enable(SoType elementType, int stackIndex); 00080 00081 // Returns the current setting of the global counter used to 00082 // determine when lists are out of date. 00083 int getCounter() const 00084 { return counter; } 00085 00086 // Reset the element counter to 0; 00087 void resetCounter() 00088 { counter = 0; } 00089 00090 private: 00091 // This maintains a global counter used to determine when lists 00092 // are out of date. It is incremented whenever a new element is 00093 // added to a list. 00094 mutable int counter; 00095 00096 // Used to protect access to the ststai counter variable. 00097 mutable SbThreadMutex counterMtx; 00098 00099 // And a per-instance counter so we don't merge enabled elements 00100 // with the parent list unnecessarily. 00101 int setUpCounter; 00102 00103 // This list holds type id's of enabled elements, indexed by the 00104 // stack index of the elements. 00105 SoTypeList elements; 00106 00107 // Pointer to parent's list of enabled elements (NULL for 00108 // SoAction). 00109 SoEnabledElementsList *parent; 00110 }; 00111 00112 #endif 00113 00114 #endif // _SO_ENABLED_ELEMENTS_LIST_H_ 00115 00116