geopsy/SigSelectionDnD.h Source File

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00001 /***************************************************************************
00002 **
00003 **  This file is part of geopsy.
00004 **
00005 **  This file may be distributed and/or modified under the terms of the
00006 **  GNU General Public License version 2 or 3 as published by the Free
00007 **  Software Foundation and appearing in the file LICENSE.GPL included
00008 **  in the packaging of this file.
00009 **
00010 **  This file is distributed in the hope that it will be useful, but WITHOUT
00011 **  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00012 **  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
00013 **  more details.
00014 **
00015 **  You should have received a copy of the GNU General Public License
00016 **  along with this program. If not, see <http://www.gnu.org/licenses/>.
00017 **
00018 **  See http://www.geopsy.org for more information.
00019 **
00020 **  Created : 2004-03-07
00021 **  Authors:
00022 **    Marc Wathelet
00023 **    Marc Wathelet (ULg, Liège, Belgium)
00024 **    Marc Wathelet (LGIT, Grenoble, France)
00025 **
00026 ***************************************************************************/
00027 
00028 #ifndef SigSelectionDnD_H
00029 #define SigSelectionDnD_H
00030 
00031 #include <QtGui>
00032 
00033 #include <GeopsyCore.h>
00034 
00035 class SigSelectionDnD :  public QObject
00036 {
00037   Q_OBJECT
00038 public:
00039   SigSelectionDnD(QWidget * eventSource);
00040 
00041   bool eventFilter(QObject *, QEvent * event);
00042   void setDragEnabled(bool b) {_dragEnabled=b;}
00043   void setDropEnabled(bool b);
00044   QWidget * source() {return _src;}
00045 public slots:
00046   void enableFilter();
00047   void disableFilter();
00048 signals:
00049   void getSelection(SubSignalPool& sel);
00050   void selectionDropped(const SubSignalPool& sel);
00051 protected:
00052   virtual bool dragEnterEvent(QDragEnterEvent * e);
00053   virtual bool dragMoveEvent(QDragMoveEvent * e);
00054   virtual bool dropEvent(QDropEvent * e);
00055   virtual bool mousePressEvent(QMouseEvent * e);
00056   virtual bool mouseReleaseEvent(QMouseEvent * e);
00057   virtual bool mouseMoveEvent(QMouseEvent * e);
00058 
00059   QWidget * _src;
00060   QPoint _mousePressPos;
00061   bool _dropEnabled;
00062   bool _dragEnabled;
00063   enum DragState {Idle, Pressed, Dragging};
00064   DragState _state;
00065   bool _filterEnabled;
00066 };
00067 
00068 #endif