SoFocusElement.h

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/*************************************************************************************
**
** Copyright 2007, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 
#ifndef SO_FOCUS_ELEMENT_H
#define SO_FOCUS_ELEMENT_H
 
 
 
#include "SoUtilsSystem.h"
 
#include <Inventor/elements/SoReplacedElement.h>
#include <Inventor/events/SoEvent.h>
 
enum FocusState {
  FS_FOCUS,
  FS_NO_FOCUS,
};
class SbFocusInfo
{
  public:
    FocusState state;
 
    SbVec2f normClickCoords;
 
    SbFocusInfo() {
      state = FS_NO_FOCUS;
      normClickCoords = SbVec2f(0,0);
    }
 
    SbFocusInfo(FocusState state, SbVec2f normClickCoords) {
      this->state = state;
      this->normClickCoords = normClickCoords;
    }
 
    int operator==(const SbFocusInfo &i) const {
      return ( (state == i.state) &&
               (normClickCoords == i.normClickCoords));
    }
};
 
class SOUTILS_EXPORT SoFocusElement : public SoReplacedElement {
 
    SO_ELEMENT_HEADER(SoFocusElement);
 
  public:
    void init(SoState *state) override;
 
    static const SbFocusInfo& get(SoState *state);
 
    SbFocusInfo getDefault();
 
    static void set(SoState *state, SoNode *node, const SbFocusInfo& focusInfo);
 
  SoINTERNAL public:
    static void     initClass();
 
  protected:
    SbFocusInfo _focusInfo;
};
 
#endif