mouseGrabber.h

Go to the documentation of this file.

/****************************************************************************

 This file is part of the QGLViewer library
 Copyright (C) 2002-2004  Gilles Debunne (Gilles.Debunne@imag.fr)
 Version 1.3.5 Release 8. Packaged on Monday December 22, 2003.

 http://www-imagis.imag.fr/Membres/Gilles.Debunne/CODE/QGLViewer

 libQGLViewer is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.

 libQGLViewer is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with libQGLViewer; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*****************************************************************************/

#ifndef QGLVIEWER_MOUSE_GRABBER_H
#define QGLVIEWER_MOUSE_GRABBER_H

#include "config.h"
#include "qevent.h"

class QGLViewer;

namespace qglviewer {
  class Camera;
  
  class QGLVIEWER_EXPORT MouseGrabber
  {
#ifndef DOXYGEN
    friend class ::QGLViewer;
#endif

  public:
    MouseGrabber();
    virtual ~MouseGrabber() { MouseGrabber::MouseGrabberPool_.removeRef(this); };
    
  public:
    virtual void checkIfGrabsMouse(int x, int y, const Camera* const camera) = 0;

    bool grabsMouse() { return grabsMouse_; };
    
  protected:
    void setGrabsMouse(const bool flag) { grabsMouse_ = flag; };


  public:
    static const QPtrList<MouseGrabber>& MouseGrabberPool() { return MouseGrabber::MouseGrabberPool_; };

    bool isInMouseGrabberPool() const { return MouseGrabber::MouseGrabberPool_.findRef( this ) != -1; };
    void addInMouseGrabberPool();
    void removeFromMouseGrabberPool();
    void clearMouseGrabberPool(bool autoDelete = false);


  protected:
    virtual void mousePressEvent(QMouseEvent* const, Camera* const) {};
    virtual void mouseDoubleClickEvent(QMouseEvent* const, Camera* const) {};
    virtual void mouseReleaseEvent(QMouseEvent* const, Camera* const) {};
    virtual void mouseMoveEvent(QMouseEvent* const, const Camera* const) {};
    virtual void wheelEvent(QWheelEvent* const, const Camera* const) {};

  private:
    // Copy constructor and opertor= are declared private and undefined
    // Prevents everyone from trying to use them
    MouseGrabber(const MouseGrabber&);
    MouseGrabber& operator=(const MouseGrabber&);

    bool grabsMouse_;
    
    // Q G L V i e w e r   p o o l
    static QPtrList<MouseGrabber> MouseGrabberPool_;
  };

} // namespace qglviewer

#endif // QGLVIEWER_MOUSE_GRABBER_H

---