1 #ifndef COIN_SOSTATE_H
2 #define COIN_SOSTATE_H
3
4 /**************************************************************************\
5 * Copyright (c) Kongsberg Oil & Gas Technologies AS
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
10 * met:
11 *
12 * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
14 *
15 * Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * Neither the name of the copyright holder nor the names of its
20 * contributors may be used to endorse or promote products derived from
21 * this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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34 \**************************************************************************/
35
36 #include <Inventor/SbBasic.h>
37 #include <cstdio>
38 #include <cassert>
39
40 class SoAction;
41 class SoTypeList;
42 class SoElement;
43
44 class COIN_DLL_API SoState {
45 public:
46 SoState(SoAction * action,
47 const SoTypeList & enabledelements);
48 ~SoState(void);
49
50 SoAction * getAction(void) const;
51
52 SoElement * getElement(const int stackindex);
53 const SoElement * getConstElement(const int stackindex) const;
54
55 void push(void);
56 void pop(void);
57
58 void print(FILE * const file = stdout) const;
59
60 SbBool isElementEnabled(const int stackindex) const;
61
62 int getDepth(void) const;
63
64 void setCacheOpen(const SbBool flag);
65 SbBool isCacheOpen(void) const;
66
67 SoElement * getElementNoPush(const int stackindex) const;
68
69 private:
70 SoElement ** stack;
71 int numstacks;
72 SbBool cacheopen;
73 class SoStateP * pimpl;
74 };
75
76 // these methods are used very often, and is therefore inlined
77
78 inline SbBool
isElementEnabled(const int stackindex)79 SoState::isElementEnabled(const int stackindex) const
80 {
81 return (stackindex < this->numstacks) && (this->stack[stackindex] != NULL);
82 }
83
84 inline const SoElement *
getConstElement(const int stackindex)85 SoState::getConstElement(const int stackindex) const
86 {
87 assert(this->isElementEnabled(stackindex));
88 return this->stack[stackindex];
89 }
90
91 inline SbBool
isCacheOpen(void)92 SoState::isCacheOpen(void) const
93 {
94 return this->cacheopen;
95 }
96
97 inline SoElement *
getElementNoPush(const int stackindex)98 SoState::getElementNoPush(const int stackindex) const
99 {
100 assert(this->isElementEnabled(stackindex));
101 return this->stack[stackindex];
102 }
103
104
105 #endif // !COIN_SOSTATE_H
106