SmPanEventHandler.h

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#ifndef SMALLCHANGE_PAN_EVENTHANDLER_H
#define SMALLCHANGE_PAN_EVENTHANDLER_H

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#include <Inventor/fields/SoSFFloat.h>

#include <SmallChange/eventhandlers/SmEventHandler.h>
#include <SmallChange/basic.h>

class SmPanEventHandlerP;
class SbSphereSheetProjector;

class SMALLCHANGE_DLL_API SmPanEventHandler : public SmEventHandler {
  typedef SmEventHandler inherited;

  SO_NODE_HEADER(SmPanEventHandler);
  
public:
  SmPanEventHandler(void);
  virtual void handleEvent(SoHandleEventAction * action);
  static void initClass(void);
  
  SoSFFloat zoomSpeed;

protected:
  virtual ~SmPanEventHandler();

  void pan(const SbVec2f & currpos, 
           const SbVec2f & prevpos);

  void spin(const SbVec2f & currpos, 
            const SbVec2f & prevpos);

  void zoom(const SbVec2f & currpos,
            const SbVec2f & prevpos);

  void zoom(const float delta);

private:
  SmPanEventHandlerP * pimpl;
};

#endif // !SMALLCHANGE_PAN_EVENTHANDLER_H