BWAPI: SPAR/AIModule/BWTA/vendors/CGAL/CGAL/IO/Qt_widget

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00001 // Copyright (c) 2002-2004  INRIA Sophia-Antipolis (France).
00002 // All rights reserved.
00003 //
00004 // This file is part of CGAL (www.cgal.org); you can redistribute it and/or
00005 // modify it under the terms of the GNU Lesser General Public License as
00006 // published by the Free Software Foundation; version 2.1 of the License.
00007 // See the file LICENSE.LGPL distributed with CGAL.
00008 //
00009 // Licensees holding a valid commercial license may use this file in
00010 // accordance with the commercial license agreement provided with the software.
00011 //
00012 // This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
00013 // WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
00014 //
00015 // $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/CGAL-3.5-branch/Qt_widget/include/CGAL/IO/Qt_widget_layer.h $
00016 // $Id: Qt_widget_layer.h 38534 2007-05-04 13:32:40Z lrineau $
00017 // 
00018 //
00019 // Author(s)     : Laurent Rineau and Radu Ursu
00020 
00021 #ifndef CGAL_QT_WIDGET_LAYER_H
00022 #define CGAL_QT_WIDGET_LAYER_H
00023 
00024 #include <CGAL/IO/Qt_widget.h>
00025 #include <qobject.h>
00026 #include <qcursor.h>
00027 #include <list>
00028 
00029 
00030 namespace CGAL {
00031 
00032 class Qt_widget_layer : public QObject {
00033   Q_OBJECT
00034 public:
00035   Qt_widget_layer(QObject* parent = 0, const char* name = 0) 
00036     : QObject(parent, name), does_eat_events(false), active(false){};
00037 
00038   // Event handlers
00039   virtual void mousePressEvent(QMouseEvent *) {} ;
00040   virtual void mouseReleaseEvent(QMouseEvent *) {};
00041   virtual void wheelEvent(QWheelEvent *) {};
00042   virtual void mouseDoubleClickEvent(QMouseEvent *) {};
00043   virtual void mouseMoveEvent(QMouseEvent *) {};
00044   virtual void keyPressEvent(QKeyEvent *) {};
00045   virtual void keyReleaseEvent(QKeyEvent *) {};
00046   virtual void enterEvent(QEvent *) {};
00047   virtual void leaveEvent(QEvent *) {};
00048   virtual bool event(QEvent *e) {QObject::event(e); return true;};
00049 
00050   bool    is_active(){return active;};  //return true if this layer is active
00051   bool    does_eat_events;
00052 public slots:
00053   virtual void draw(){};
00054   void    stateChanged(int);
00055   void    toggle(bool);
00056   bool    activate(); //activate and return true if it was not active
00057   bool    deactivate();//deactivate and return true if it was active
00058 signals:
00059   void    activated(Qt_widget_layer*);
00060   void    deactivated(Qt_widget_layer*);
00061 private:
00062   void    attach(Qt_widget *w);//attach Qt_widget to the tool
00063   bool    active;       //true if this layers is active
00064   friend class Qt_widget;
00065 protected:
00066   Qt_widget  *widget;//the pointer to the widget
00067   virtual void activating(){};
00068   virtual void deactivating(){};
00069 };
00070 
00071 } // namespace CGAL end
00072 
00073 #endif // CGAL_QT_WIDGET_LAYER_H