zq_zoom.hpp

/* zq_zoom.hpp */
/* $Id: zq_zoom.hpp 20080 2009-12-15 15:57:52Z vlad $ */
#ifndef __zq_zoom_hpp
#define __zq_zoom_hpp

#include "zqb_natgrpmember.hpp"
#include "zq_rubberbox.hpp"


class ZqZoom : public ZqRubberBox
{
public:

  enum ZoomMode {
    ZoomRubberRect, 
    ZoomInClick,    
    ZoomOutClick    
  };


  ZqZoom (ZqbNatGroup& rNatAxis, ZqRubberBox::RangeMode eRangeMode,
      const char* szName = NULL);

  ZqZoom (ZqbNatGroup& rNatAxisX, ZqbNatGroup& rNatAxisY,
      const char* szName = NULL);

  ZqZoom (ZqbNatGroup& rNatAxis, ZqRubberBox::RangeMode eRangeMode,
      ZqbPlaceholder* pPh, const char* szName = NULL);

  ZqZoom (ZqbNatGroup& rNatAxisX, ZqbNatGroup& rNatAxisY,
      ZqbPlaceholder* pPh, const char* szName = NULL);


  virtual void      zoomAll ();

  virtual void      zoomClick (float sf, double nxy[2] = NULL);


  /*
   *  Properties
   */

  virtual void      setZoomMode (ZoomMode eMode);

  virtual ZoomMode  getZoomMode () const;

  virtual void      setScaleFactor (float fScale);

  virtual float     getScaleFactor () const;


  /*
   *  Polymorphic methods
   */

  virtual ZqbEventHint  input (QEvent& event);

  virtual void      box (QRect r);

  virtual void      click (QRect r);


protected:

  void          zoomClick (double nc, ZqbNatGroup& group,
                   float fScaleFactor);

  int           pos2nat (const QPoint& p, double nc[2]) const;

  void          forceRedraw (ZqbNatGrpMember* pNGm);


  ZoomMode      m_eZoomMode;

  float         m_fScale;

  ZqbNatGrpMember   *m_pNatX;

  ZqbNatGrpMember   *m_pNatY;

  bool          m_bDragToMove;

private:

  static int        s_iNameCounter;

};


#include "zq_zoom_inline.hpp"


#endif /* zq_zoom.hpp */