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SoCacheElement.h

00001 #ifndef COIN_SOCACHEELEMENT_H
00002 #define COIN_SOCACHEELEMENT_H
00003 
00004 /**************************************************************************\
00005  *
00006  *  This file is part of the Coin 3D visualization library.
00007  *  Copyright (C) by Kongsberg Oil & Gas Technologies.
00008  *
00009  *  This library is free software; you can redistribute it and/or
00010  *  modify it under the terms of the GNU General Public License
00011  *  ("GPL") version 2 as published by the Free Software Foundation.
00012  *  See the file LICENSE.GPL at the root directory of this source
00013  *  distribution for additional information about the GNU GPL.
00014  *
00015  *  For using Coin with software that can not be combined with the GNU
00016  *  GPL, and for taking advantage of the additional benefits of our
00017  *  support services, please contact Kongsberg Oil & Gas Technologies
00018  *  about acquiring a Coin Professional Edition License.
00019  *
00020  *  See http://www.coin3d.org/ for more information.
00021  *
00022  *  Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
00023  *  http://www.sim.no/  sales@sim.no  coin-support@coin3d.org
00024  *
00025 \**************************************************************************/
00026 
00027 #include <Inventor/elements/SoSubElement.h>
00028 
00029 class SoCache;
00030 
00031 class COIN_DLL_API SoCacheElement : public SoElement {
00032   typedef SoElement inherited;
00033 
00034   SO_ELEMENT_HEADER(SoCacheElement);
00035 public:
00036   static void initClass(void);
00037 protected:
00038   virtual ~SoCacheElement();
00039 
00040 public:
00041   virtual void init(SoState * state);
00042 
00043   virtual void push(SoState * state);
00044   virtual void pop(SoState * state, const SoElement * prevTopElement);
00045 
00046   static void set(SoState * const state, SoCache * const cache);
00047   SoCache * getCache(void) const;
00048   static SbBool anyOpen(SoState * const state);
00049   static void invalidate(SoState * const state);
00050   virtual SbBool matches(const SoElement * element) const;
00051   virtual SoElement * copyMatchInfo(void) const;
00052   SoCacheElement * getNextCacheElement(void) const;
00053 
00054   static void addElement(SoState * const state,
00055                          const SoElement * const element);
00056   static void addCacheDependency(SoState * const state, SoCache * const cache);
00057   static SbBool setInvalid(const SbBool newvalue);
00058   static SoCache * getCurrentCache(SoState * const state);
00059 
00060 private:
00061   SoCache * cache;
00062   static SbBool invalidated;
00063 };
00064 
00065 #endif // !COIN_SOCACHEELEMENT_H

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