/***************************************************************************
 *   Copyright (c) 2006 Werner Mayer <wmayer[at]users.sourceforge.net>     *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License as published by the Free Software Foundation; either          *
 *   version 2 of the License, or (at your option) any later version.      *
 *                                                                         *
 *   This library  is distributed in the hope that it will be useful,      *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this library; see the file COPYING.LIB. If not,    *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 *   Suite 330, Boston, MA  02111-1307, USA                                *
 *                                                                         *
 ***************************************************************************/

#ifndef GUI_SOFCINTERACTIVEELEMENT_H
#define GUI_SOFCINTERACTIVEELEMENT_H

#include <Inventor/actions/SoGLRenderAction.h>
#include <Inventor/actions/SoHandleEventAction.h>
#include <Inventor/elements/SoReplacedElement.h>
#include <Inventor/nodes/SoNode.h>
#include <Inventor/nodes/SoSubNode.h>

#include <QtOpenGL.h>
#include <FCGlobal.h>


namespace Gui {
/**
 * @author Werner Mayer
 */
class GuiExport SoFCInteractiveElement : public SoReplacedElement {
  using inherited = SoReplacedElement;

  SO_ELEMENT_HEADER(SoFCInteractiveElement);

public:
  static void initClass();

  void init(SoState * state) override;
  static void set(SoState * const state, SoNode * const node, SbBool mode);
  static SbBool get(SoState * const state);
  static const SoFCInteractiveElement * getInstance(SoState * state);

protected:
  ~SoFCInteractiveElement() override;
  virtual void setElt(SbBool mode);

private:
  SbBool interactiveMode;
};

class GuiExport SoGLWidgetElement : public SoElement {
  using inherited = SoElement;

  SO_ELEMENT_HEADER(SoGLWidgetElement);

public:
  static void initClass();

  void init(SoState * state) override;
  void push(SoState * state) override;
  void pop(SoState * state, const SoElement * prevTopElement) override;

  SbBool matches(const SoElement * element) const override;
  SoElement * copyMatchInfo() const override;

  static  void set(SoState * state, QtGLWidget * window);
  static  void get(SoState * state, QtGLWidget *& window);

protected:
  ~SoGLWidgetElement() override;

protected:
  QtGLWidget * window;
};

class GuiExport SoGLRenderActionElement : public SoElement {
  using inherited = SoElement;

  SO_ELEMENT_HEADER(SoGLRenderActionElement);

public:
  static void initClass();

  void init(SoState * state) override;
  void push(SoState * state) override;
  void pop(SoState * state, const SoElement * prevTopElement) override;

  SbBool matches(const SoElement * element) const override;
  SoElement * copyMatchInfo() const override;

  static  void set(SoState * state, SoGLRenderAction * action);
  static  void get(SoState * state, SoGLRenderAction * & action);

protected:
  ~SoGLRenderActionElement() override;

protected:
  SoGLRenderAction * glRenderAction;
};

class GuiExport SoGLWidgetNode : public SoNode {
    using inherited = SoNode;

    SO_NODE_HEADER(SoGLWidgetNode);

public:
    static void initClass();
    SoGLWidgetNode();

    QtGLWidget * window{nullptr};

    void doAction(SoAction * action) override;
    void GLRender(SoGLRenderAction * action) override;

protected:
    ~SoGLWidgetNode() override;
};

class GuiExport SoGLVBOActivatedElement : public SoElement {
  using inherited = SoElement;

  SO_ELEMENT_HEADER(SoGLVBOActivatedElement);

public:
  static void initClass();

  void init(SoState * state) override;
  void push(SoState * state) override;
  void pop(SoState * state, const SoElement * prevTopElement) override;

  SbBool matches(const SoElement * element) const override;
  SoElement * copyMatchInfo() const override;

  static  void set(SoState * state, SbBool);
  static  void get(SoState * state, SbBool& active);

protected:
  ~SoGLVBOActivatedElement() override;

protected:
  SbBool active;
};

} // namespace Gui

#endif // GUI_SOFCINTERACTIVEELEMENT_H