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#ifndef COIN_SOELEMENT_H
#define COIN_SOELEMENT_H
/**************************************************************************\
*
* This file is part of the Coin 3D visualization library.
* Copyright (C) 1998-2004 by Systems in Motion. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* ("GPL") version 2 as published by the Free Software Foundation.
* See the file LICENSE.GPL at the root directory of this source
* distribution for additional information about the GNU GPL.
*
* For using Coin with software that can not be combined with the GNU
* GPL, and for taking advantage of the additional benefits of our
* support services, please contact Systems in Motion about acquiring
* a Coin Professional Edition License.
*
* See <URL:http://www.coin3d.org/> for more information.
*
* Systems in Motion, Teknobyen, Abels Gate 5, 7030 Trondheim, NORWAY.
* <URL:http://www.sim.no/>.
*
\**************************************************************************/
#include <Inventor/SbBasic.h>
#include <Inventor/SoType.h>
#include <Inventor/misc/SoState.h>
#include <stdio.h>
class SoNode;
class COIN_DLL_API SoElement {
public:
static void initClass(void);
static SoType getClassTypeId(void);
static int getClassStackIndex(void);
const SoType getTypeId(void) const;
int getStackIndex(void) const;
virtual void init(SoState * state);
virtual void push(SoState * state);
virtual void pop(SoState * state, const SoElement * prevTopElement);
virtual SbBool matches(const SoElement * element) const = 0;
virtual SoElement * copyMatchInfo(void) const = 0;
static void initElements(void); // only for base class (SoElement)
static int getNumStackIndices(void);
static SoType getIdFromStackIndex(const int stackIndex);
void setDepth(const int depth);
int getDepth(void) const;
virtual void print(FILE * file = stdout) const;
virtual ~SoElement();
protected:
SoElement(void);
static int classStackIndex;
static SoElement * getElement(SoState * const state, const int stackIndex);
static const SoElement * getConstElement(SoState * const state, const int stackIndex);
void capture(SoState * const state) const;
virtual void captureThis(SoState * state) const;
void setTypeId(const SoType typeId);
void setStackIndex(const int index);
SoType typeId;
int stackIndex;
static int createStackIndex(const SoType id);
static SoTypeList * stackToType;
int depth;
SoElement * getNextInStack(void) const;
SoElement * getNextFree(void) const;
private:
static SoType classTypeId;
friend class SoState; // FIXME: bad design. 19990629 mortene.
static void cleanup(void);
SoElement * nextup;
SoElement * nextdown;
};
// inlined methods
inline SoElement *
SoElement::getElement(SoState * const state,
const int stackIndex)
{
return state->getElement(stackIndex);
}
inline void
SoElement::capture(SoState * const state) const
{
if (state->isCacheOpen()) this->captureThis(state);
}
inline const SoElement *
SoElement::getConstElement(SoState * const state,
const int stackIndex)
{
const SoElement * element = state->getConstElement(stackIndex);
element->capture(state);
return element;
}
#endif // !COIN_SOELEMENT_H
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