QtLasso.hh

/*===========================================================================*\
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/*===========================================================================*\
 *                                                                           *
 *   $Revision: 8521 $                                                       *
 *   $Author: moebius $                                                      *
 *   $Date: 2010-02-10 15:57:35 +0100 (Mi, 10. Feb 2010) $                   *
 *                                                                           *
\*===========================================================================*/



//=============================================================================
//
//  CLASS QtLasso
//
//=============================================================================


#ifndef ACG_QTLASSO_HH
#define ACG_QTLASSO_HH


//== INCLUDES =================================================================

// ACG
#include "../GL/GLState.hh"
#include "../Math/VectorT.hh"

// Qt
//#include <QGl>
//#include <QNameSpace>
#include <QMouseEvent>


//== FORWARDDECLARATIONS ======================================================


//== NAMESPACES ===============================================================

namespace ACG {


//== CLASS DEFINITION =========================================================


class ACGDLLEXPORT QtLasso : public QObject
{
  Q_OBJECT

public:

  QtLasso(GLState& _glstate);
  ~QtLasso();

  void reset() { is_active_ = false; free_mask(); }
  bool is_active() const { return is_active_; }

  bool is_vertex_selected(const Vec3d& _v);

  enum SelectionMode {
    NewSelection,
    AddToSelection,
    DelFromSelection
  };


public slots:

  void slotMouseEvent(QMouseEvent* _event);


signals:

  void signalLassoSelection(ACG::QtLasso::SelectionMode);


private:

  // hide copy & assignement
  QtLasso(const QtLasso& _rhs);
  QtLasso& operator=(const QtLasso& _rhs);

  void create_mask();
  void free_mask();


  GLState&                glstate_;
  Vec2i                   first_point_, last_point_, rubberband_point_;
  unsigned char          *mask_;
  unsigned int            mask_width_, mask_height_;
  bool                    is_active_;
};


//=============================================================================
} // namespace ACG
//=============================================================================
#endif // ACG_QTLASSO_HH defined
//=============================================================================