SoEvent.h

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/*=======================================================================
** Author      : David Mott (MMM yyyy)
** Modified by : Gavin Bell (MMM yyyy)
**=======================================================================*/
/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
#ifndef  _SO_EVENT_
#define  _SO_EVENT_
 
#include <Inventor/SbBasic.h>
#include <Inventor/SbViewportRegion.h>
#include <Inventor/SbLinear.h>
#include <Inventor/SbTime.h>
#include <Inventor/SoTypedObject.h>
 
class SbTrackerInfo;
 
class  SoEvent: public SoTypedObject {
 public:
 
  SoEvent();
  virtual ~SoEvent();
 
  virtual SoType      getTypeId() const;
 
  static SoType       getClassTypeId();
 
  virtual void        setTime(SbTime t)               { timestamp = t; }
  SbTime              getTime() const                 { return timestamp; }
 
  virtual void        setPosition(const SbVec2s &p)   { position = p;
                                                        positionFloat[0] = (float)position[0];
                                                        positionFloat[1] = (float)position[1];}
 
  virtual void        setPosition(const SbVec2f &p)   { positionFloat = p;
                                                        position[0] = (short)positionFloat[0];
                                                        position[1] = (short)positionFloat[1];}
 
 
  const SbVec2s &     getPosition() const             { return position; }
 
  const SbVec2f &     getPositionFloat() const             { return positionFloat; }
 
  const SbVec2s &     getPosition(const SbViewportRegion &vpRgn) const;
 
  const SbVec2f &     getPositionFloat(const SbViewportRegion &vpRgn) const;
 
  const SbVec2f & getNormalizedPosition(const SbViewportRegion &vpRgn) const;
 
  void                setShiftDown(SbBool isDown)     { shiftDown = isDown; }
  void                setCtrlDown(SbBool isDown)      { ctrlDown = isDown; }
  void                setAltDown(SbBool isDown)       { altDown = isDown; }
  void                setButton1Down(SbBool isDown)       { button1Down = isDown; }
 
  SbBool              wasShiftDown() const            { return shiftDown; }
  SbBool              wasCtrlDown() const             { return ctrlDown; }
  SbBool              wasAltDown() const              { return altDown; }
  SbBool              wasButton1Down() const              { return button1Down; }
 
  virtual const SbTrackerInfo *getTrackerInfo() const { return NULL; }
 
  inline SbTrackerInfo* getTrackerInfo();
 
 private:
  // Initializes base event class
  static void         initClass();
  static void exitClass();
 
  // Initialize ALL Inventor event classes
  static void         initClasses();
  static void exitClasses();
 
 private:
  // all of these are set according to when the event occurred
  SbTime              timestamp;   // time the event occurred
  SbBool              shiftDown;   // TRUE if shift key was down
  SbBool              ctrlDown;    // TRUE if ctrl key was down
  SbBool              altDown;     // TRUE if alt key was down
  SbBool              button1Down; // TRUE if first mouse button was down
 
  SbVec2s             position;         // locator position when event occurred
  SbVec2f             positionFloat;    // locator position when event occurred
  SbVec2s             viewportPos;      // position relative to viewport
  SbVec2f             viewportPosFloat;  // position relative to viewport
  SbVec2f             normalizedPos;    // normalized position
 
  static SoType      classTypeId; // base typeId for all events
};
 
SbTrackerInfo* SoEvent::getTrackerInfo()
{
  const ::SoEvent* constEvent = this;
  return const_cast< ::SbTrackerInfo* >(constEvent->getTrackerInfo());
}
 
#endif /* _SO_EVENT_ */