SoScreenDrawer.h

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**=======================================================================*/
/*=======================================================================
** Author      : Thibaut Andrieu (Jan 2011)
**=======================================================================*/
 
#if !defined _SO_SCREEN_DRAWER_H_
#define _SO_SCREEN_DRAWER_H_
 
#include <Inventor/nodes/SoNode.h>
#include <Inventor/SbVec.h>
#include <Inventor/fields/SoSFNode.h>
#include <Inventor/SbBox.h>
 
class SoHandleEventAction;
class SoOrthographicCamera;
class SoSeparator;
class SbViewportRegion;

class  SoScreenDrawer : public SoNode
{
  SO_NODE_HEADER( SoScreenDrawer );
 
public:

  SoSFNode sceneGraph;

  SoScreenDrawer();

  virtual void reset();
 
private:

  static void initClass();

  static void exitClass();
  
  virtual void notify( SoNotList *list );
 
private:
  virtual void handleEvent( SoHandleEventAction* action );
 
  // Implement actions to redirect to m_root

  virtual void doAction( SoAction *action );

  virtual void callback( SoCallbackAction *action );

  virtual void GLRender( SoGLRenderAction *action );

  virtual void rayPick( SoRayPickAction *action );

  virtual void getBoundingBox( SoGetBoundingBoxAction *action );

  virtual void getPrimitiveCount( SoGetPrimitiveCountAction *action );

  SbVec2f normalizePoint(const SbVec2f& point, const SbViewportRegion& viewport);
 
SoEXTENDER_Documented private:

  virtual void onKeyDown( SoHandleEventAction* ) {};

  virtual void onMouseDown( SoHandleEventAction* ) {};

  virtual void onMouseMove( SoHandleEventAction* ) {};

  virtual void onMouseDblClick( SoHandleEventAction* ) {};

  virtual void onMouseDragging( SoHandleEventAction* ) {};

  virtual void onMouseUp( SoHandleEventAction* ) {};

  inline const SbVec2f& getLastMouseDown() const { return m_lastMouseDown; }
 
private:

  virtual ~SoScreenDrawer();
 
private:

  SoSeparator* m_root;

  SoSeparator* m_userGraphContainer;

  SoOrthographicCamera* m_camera;

  bool m_mouseLeftDown;

  SbVec2f m_lastMouseDown;
 
};
 
 
#endif // _SO_SCREEN_DRAWER_H_