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SoAction.h
1 #ifndef COIN_SOACTION_H
2 #define COIN_SOACTION_H
3 
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26 
27 #include <Inventor/SbBasic.h>
28 #include <Inventor/SoType.h>
29 #include <Inventor/misc/SoTempPath.h>
30 
31 // Include instead of using forward declarations to be compatible with
32 // Open Inventor (and besides, all the other action class definitions
33 // needs to know about these lists).
34 #include <Inventor/lists/SoActionMethodList.h>
35 #include <Inventor/lists/SoEnabledElementsList.h>
36 
37 // defined in Inventor/SbBasic.h
38 #ifdef COIN_UNDEF_IN_PATH_HACK
39 #include <sys/unistd.h>
40 #undef IN_PATH
41 // Avoid problem with HPUX 10.20 C library API headers, which defines IN_PATH
42 // in <sys/unistd.h>. That define destroys the SoAction::PathCode enum, and
43 // the preprocessor is so broken that we can't store/restore the define for
44 // the duration of this header file.
45 #endif
46 
47 
52 #define SO_ENABLE(action, element) \
53  do { \
54  assert(!element::getClassTypeId().isBad()); \
55  action::enableElement(element::getClassTypeId(), \
56  element::getClassStackIndex()); \
57  } while (0)
58 
59 
61 class SoNode;
62 class SoPath;
63 class SoPathList;
64 class SoState;
65 class SoActionP;
66 
67 class COIN_DLL_API SoAction {
68 public:
69  enum AppliedCode { NODE = 0, PATH = 1, PATH_LIST = 2 };
70  enum PathCode { NO_PATH = 0, IN_PATH = 1, BELOW_PATH = 2, OFF_PATH = 3 };
71 
72  virtual ~SoAction();
73 
74  static void initClass(void);
75  static void initClasses(void);
76 
77  static SoType getClassTypeId(void);
78  virtual SoType getTypeId(void) const = 0;
79  virtual SbBool isOfType(SoType type) const;
80 
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 
122 protected:
123  SoAction(void);
124 
125  virtual void beginTraversal(SoNode * node);
126  virtual void endTraversal(SoNode * node);
127  void setTerminated(const SbBool flag);
128 
129  virtual const SoEnabledElementsList & getEnabledElements(void) const;
130  virtual SbBool shouldCompactPathList(void) const;
131 
134 
135  /* These two methods are not available in the original OIV API. The
136  reason they have been added is explained in SoSubAction.h for the
137  SO_ACTION_HEADER macro. */
138  static SoEnabledElementsList * getClassEnabledElements(void);
139  static SoActionMethodList * getClassActionMethods(void);
140 
141 private:
142  static SoType classTypeId;
143  /* The enabledElements and methods variables are protected in the
144  original OIV API. This is not such a good idea, see the comments
145  in SoSubAction.h for SO_ACTION_HEADER. */
146 
147  static void atexit_cleanup(void);
148  static SoEnabledElementsList * enabledElements;
149  static SoActionMethodList * methods;
150  SoTempPath currentpath;
151  PathCode currentpathcode;
152 
153  SoActionP * pimpl;
154 };
155 
156 // inline methods
157 
158 inline SoAction::PathCode
160 {
161  return this->currentpathcode;
162 }
163 
164 inline void
165 SoAction::popCurPath(const PathCode prevpathcode)
166 {
167  this->currentpath.pop();
168  this->currentpathcode = prevpathcode;
169 }
170 
171 #endif // !COIN_SOACTION_H
void popCurPath(void)
Definition: SoAction.cpp:1152
The SoPathList class is a container for pointers to SoPath objects.As this class inherits SoBaseList...
Definition: SoPathList.h:31
The SoNode class is the base class for nodes used in scene graphs.Coin is a retained mode 3D visualiz...
Definition: SoNode.h:47
The SoState class manages the Coin scenegraph traversal state data.The SoState class is used by actio...
Definition: SoState.h:35
PathCode getCurPathCode(void) const
Definition: SoAction.h:159
The SoPath class is a container class for traversal path descriptions.SoPath objects contain a list o...
Definition: SoPath.h:43
AppliedCode
Definition: SoAction.h:69
The SoAction class is the base class for all traversal actions.Applying actions is the basic mechanis...
Definition: SoAction.h:67
SoActionMethodList * traversalMethods
Definition: SoAction.h:133
The SoEnabledElementsList class is a container for type info for element types that are enabled in ac...
Definition: SoEnabledElementsList.h:29
PathCode
Definition: SoAction.h:70
SoState * state
Definition: SoAction.h:132
The SoType class is the basis for the run-time type system in Coin.Many of the classes in the Coin li...
Definition: SoType.h:50
The SoActionMethodList class contains function pointers for action methods.An SoActionMethodList cont...
Definition: SoActionMethodList.h:35

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