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SoAction.h
1 #ifndef COIN_SOACTION_H
2 #define COIN_SOACTION_H
3
4 /**************************************************************************\
5 *
6 * This file is part of the Coin 3D visualization library.
7 * Copyright (C) by Kongsberg Oil & Gas Technologies.
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * ("GPL") version 2 as published by the Free Software Foundation.
12 * See the file LICENSE.GPL at the root directory of this source
13 * distribution for additional information about the GNU GPL.
14 *
15 * For using Coin with software that can not be combined with the GNU
16 * GPL, and for taking advantage of the additional benefits of our
17 * support services, please contact Kongsberg Oil & Gas Technologies
18 * about acquiring a Coin Professional Edition License.
19 *
20 * See http://www.coin3d.org/ for more information.
21 *
22 * Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
23 * http://www.sim.no/ sales@sim.no coin-support@coin3d.org
24 *
25 \**************************************************************************/
26
27 #include <Inventor/SbBasic.h>
28 #include <Inventor/SoType.h>
29 #include <Inventor/misc/SoTempPath.h>
30 #include <Inventor/tools/SbPimplPtr.h>
31
32 // Include instead of using forward declarations to be compatible with
33 // Open Inventor (and besides, all the other action class definitions
34 // needs to know about these lists).
35 #include <Inventor/lists/SoActionMethodList.h>
36 #include <Inventor/lists/SoEnabledElementsList.h>
37
38 // defined in Inventor/SbBasic.h
39 #ifdef COIN_UNDEF_IN_PATH_HACK
40 #include <sys/unistd.h>
41 #undef IN_PATH
42 // Avoid problem with HPUX 10.20 C library API headers, which defines IN_PATH
43 // in <sys/unistd.h>. That define destroys the SoAction::PathCode enum, and
44 // the preprocessor is so broken that we can't store/restore the define for
45 // the duration of this header file.
46 #endif // COIN_UNDEF_IN_PATH_HACK
47
48
53 #define SO_ENABLE(action, element) \
54 do { \
55 assert(!element::getClassTypeId().isBad()); \
56 action::enableElement(element::getClassTypeId(), \
57 element::getClassStackIndex()); \
58 } while (0)
59
60
61 class SoEnabledElementsList;
62 class SoNode;
63 class SoPath;
64 class SoPathList;
65 class SoState;
66 class SoActionP;
67
68 class COIN_DLL_API SoAction {
69 public:
70 static void initClass(void);
71 static void initClasses(void);
72
73 enum AppliedCode { NODE = 0, PATH = 1, PATH_LIST = 2 };
74 enum PathCode { NO_PATH = 0, IN_PATH = 1, BELOW_PATH = 2, OFF_PATH = 3 };
75
76 virtual ~SoAction(void);
77
78 static SoType getClassTypeId(void);
79 virtual SoType getTypeId(void) const = 0;
80 virtual SbBool isOfType(SoType type) const;
81
82 virtual void apply(SoNode * root);
83 virtual void apply(SoPath * path);
84 virtual void apply(const SoPathList & pathlist, SbBool obeysrules = FALSE);
85 void apply(SoAction * beingApplied);
86 virtual void invalidateState(void);
87
88 static void nullAction(SoAction * action, SoNode * node);
89
90 AppliedCode getWhatAppliedTo(void) const;
91 SoNode * getNodeAppliedTo(void) const;
92 SoPath * getPathAppliedTo(void) const;
93 const SoPathList * getPathListAppliedTo(void) const;
94 const SoPathList * getOriginalPathListAppliedTo(void) const;
95
96 SbBool isLastPathListAppliedTo(void) const;
97
98 PathCode getPathCode(int & numindices, const int * & indices);
99
100 void traverse(SoNode * const node);
101 SbBool hasTerminated(void) const;
102
103 const SoPath * getCurPath(void);
104 SoState * getState(void) const;
105
106 PathCode getCurPathCode(void) const;
107 virtual SoNode * getCurPathTail(void);
108 void usePathCode(int & numindices, const int * & indices);
109
110 void pushCurPath(const int childindex, SoNode * node = NULL);
111 void popCurPath(const PathCode prevpathcode);
112 void pushCurPath(void);
113
114 void popPushCurPath(const int childindex, SoNode * node = NULL);
115 void popCurPath(void);
116
117 public:
118 void switchToPathTraversal(SoPath * path);
119 void switchToNodeTraversal(SoNode * node);
120
121 protected:
122 SoAction(void);
123
124 virtual void beginTraversal(SoNode * node);
125 virtual void endTraversal(SoNode * node);
126 void setTerminated(const SbBool flag);
127
128 virtual const SoEnabledElementsList & getEnabledElements(void) const;
129 virtual SbBool shouldCompactPathList(void) const;
130
131 SoState * state;
132 SoActionMethodList * traversalMethods;
133
134 /* These two methods are not available in the original OIV API. The
135 reason they have been added is explained in SoSubAction.h for the
136 SO_ACTION_HEADER macro. */
137 static SoEnabledElementsList * getClassEnabledElements(void);
138 static SoActionMethodList * getClassActionMethods(void);
139
140 private:
141 static SoType classTypeId;
142 /* The enabledElements and methods variables are protected in the
143 original OIV API. This is not such a good idea, see the comments
144 in SoSubAction.h for SO_ACTION_HEADER. */
145
146 static void atexit_cleanup(void);
147 static SoEnabledElementsList * enabledElements;
148 static SoActionMethodList * methods;
149 SoTempPath currentpath;
150 PathCode currentpathcode;
151
152 private:
153 SbPimplPtr<SoActionP> pimpl;
154
155 // NOT IMPLEMENTED:
156 SoAction(const SoAction & rhs);
157 SoAction & operator = (const SoAction & rhs);
158 }; // SoAction
159
160 // inline methods
161
162 inline SoAction::PathCode
163 SoAction::getCurPathCode(void) const
164 {
165 return this->currentpathcode;
166 }
167
168 #endif // !COIN_SOACTION_H

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