SmEventHandler.h

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#ifndef SMALLCHANGE_SMEVENTHANDLER_H
#define SMALLCHANGE_SMEVENTHANDLER_H

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#include <Inventor/SbViewportRegion.h>
#include <SmallChange/nodekits/SmCameraControlKit.h>
#include <SmallChange/basic.h>
#include <Inventor/SbVec2s.h>
#include <Inventor/nodes/SoSubNode.h>
#include <Inventor/nodes/SoNode.h>

class SoHandleEventAction;
class SoCamera;
class SoSensor;
class SoTimerSensor;
class SbVec3f;
class SoGLRenderAction;

class SMALLCHANGE_DLL_API SmEventHandler : public SoNode {
  typedef SoNode inherited;

  SO_NODE_ABSTRACT_HEADER(SmEventHandler);  

public:
  static void initClass(void);
  
  // FIXME: get rid of this method, pederb 2003-09-30
  void setCameraControlKit(SmCameraControlKit * kit);
  void setViewportRegion(const SbViewportRegion & vp);
  const SbViewportRegion & getViewportRegion(void) const;
  float getGLAspectRatio(void) const;
  SbVec2s getGLSize(void) const;

  virtual void preRender(SoGLRenderAction * action);
  virtual void pulse(void);
  virtual SbBool isAnimating(void);
  virtual void resetCameraFocalDistance(const SbViewportRegion & vpr);
  void enablePulse(const SbBool onoff);

protected:
  SmEventHandler(void);
  virtual ~SmEventHandler();

  SbVec3f getViewUp(void) const;

  SbBool isAnimationEnabled(void) const;
  void interactiveCountInc(void);
  void interactiveCountDec(void);

  SoCamera * getCamera(void);

  void yawCamera(const float rad);
  void rollCamera(const float rad);
  void pitchCamera(const float rad);

  SmCameraControlKit * kit;
  SoTimerSensor * pulser;

private:
  static void pulse_cb(void * closure, SoSensor * s);
  
  SbBool pulseenabled;
  int intcnt;
  SbViewportRegion vp;
};

#endif // SMALLCHANGE_SMEVENTHANDLER_H