text: // Copyright (c) 2002-2004  INRIA Sophia-Antipolis (France).
  // All rights reserved.
  //
  // This file is part of CGAL (www.cgal.org); you can redistribute it and/or
  // modify it under the terms of the GNU Lesser General Public License as
  // published by the Free Software Foundation; either version 3 of the License,
  // or (at your option) any later version.
  //
  // Licensees holding a valid commercial license may use this file in
  // accordance with the commercial license agreement provided with the software.
  //
  // This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  // WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  //
  // $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/releases/CGAL-4.1-branch/Qt_widget/include/CGAL/IO/Qt_widget_focus.h $
  // $Id: Qt_widget_focus.h 69974 2012-06-22 09:52:10Z pmoeller $
  // 
  //
  // Author(s)     : Radu Ursu
  
  #ifndef CGAL_QT_WIDGET_FOCUS_H
  #define CGAL_QT_WIDGET_FOCUS_H
  
  #include <CGAL/IO/pixmaps/focus1.xpm>
  #include <CGAL/IO/pixmaps/focus1_mask.xpm>
  #include <CGAL/IO/pixmaps/focus2.xpm>
  #include <CGAL/IO/pixmaps/focus2_mask.xpm>
  #include <CGAL/IO/pixmaps/focus3.xpm>
  #include <CGAL/IO/pixmaps/focus3_mask.xpm>
  
  #include <CGAL/IO/Qt_widget.h>
  #include <CGAL/IO/Qt_widget_layer.h>
  #include <qcolor.h>
  #include <qtimer.h>
  #include <qpixmap.h>
  #include <qbitmap.h>
  #include <qcursor.h>
  
  
  namespace CGAL {
  
  class Qt_widget_focus : public Qt_widget_layer
  {
  private:
    QPixmap *mouse_ico1,
            *mouse_ico2,
            *mouse_ico3;
    QCursor *cursor1,
            *cursor2,
            *cursor3;
    QBitmap cb, cm;
    int	  cycle;
    QCursor oldcursor;
  
  public:
    Qt_widget_focus(QObject* parent = 0, const char* name = 0) 
      : Qt_widget_layer(parent, name), cycle(0)
    {
  	mouse_ico1 = new QPixmap( (const char**)focus1_xpm);
  	mouse_ico2 = new QPixmap( (const char**)focus2_xpm);
  	mouse_ico3 = new QPixmap( (const char**)focus3_xpm);
  	
  	QPixmap *mouse_ico_mask1 = new QPixmap((const char**)focus1_mask_xpm);	
  	QPixmap *mouse_ico_mask2 = new QPixmap((const char**)focus2_mask_xpm);
  	QPixmap *mouse_ico_mask3 = new QPixmap((const char**)focus3_mask_xpm);
  
  	cb = *mouse_ico1; cm = *mouse_ico_mask1;
  	mouse_ico1->setMask(cm);
  	cursor1 = new QCursor(*mouse_ico1);
  
  	cb = *mouse_ico2; cm = *mouse_ico_mask2;
  	mouse_ico2->setMask(cm);
  	cursor2 = new QCursor(*mouse_ico2);
  
  	cb = *mouse_ico3; cm = *mouse_ico_mask3;
  	mouse_ico3->setMask(cm);
  	cursor3 = new QCursor(*mouse_ico3);
    };
  
    void timerEvent( QTimerEvent *)
    {
  	switch(cycle){
  	case 1:
  		widget->setCursor(*cursor1);
  		cycle++;
  		break;
  	case 2:
  		widget->setCursor(*cursor2);
  		cycle++;
  		break;
  	case 3:
  		widget->setCursor(*cursor3);
  		cycle=1;
  		break;
  	}
    }
  private:
    bool is_pure(Qt::ButtonState s){
      if((s & Qt::ControlButton) ||
         (s & Qt::ShiftButton) ||
         (s & Qt::AltButton))
        return 0;
      else
        return 1;
    }
    void mousePressEvent(QMouseEvent *e)
    {
      if(e->button() == Qt::LeftButton
         && is_pure(e->state()))
      {
        double x, y;
        widget->x_real(e->x(), x);
        widget->y_real(e->y(), y);	
        widget->set_center(x, y);
      }
    };
    void deactivating()
    {    
      widget->setCursor(oldcursor);
  	  killTimers();
    };
  
    void activating()
    {
      oldcursor = widget->cursor();
  	  startTimer( 200 );
  	  cycle = 1;
  
    };
  };//end class 
  
  } // namespace CGAL
  
  #endif // CGAL_QT_WIDGET_FOCUS_H
  