00001 /*************************************************************************** 00002 draganddrop.h - description 00003 ------------------- 00004 begin : Thu Aug 28 2003 00005 copyright : (C) 2003 by Gabor Torok 00006 email : cctorok@yahoo.com 00007 ***************************************************************************/ 00008 00009 /*************************************************************************** 00010 * * 00011 * This program is free software; you can redistribute it and/or modify * 00012 * it under the terms of the GNU General Public License as published by * 00013 * the Free Software Foundation; either version 2 of the License, or * 00014 * (at your option) any later version. * 00015 * * 00016 ***************************************************************************/ 00017 00018 #ifndef DRAG_AND_DROP_H 00019 #define DRAG_AND_DROP_H 00020 00021 #include "widget.h" 00022 00031 class DragAndDropHandler { 00032 public: 00033 DragAndDropHandler(); 00034 virtual ~DragAndDropHandler(); 00035 00036 // the distance in pixels for a drag event to start 00037 // so a casual click doesn't start a drag 00038 static const int DRAG_START_DISTANCE = 10; 00039 00043 virtual void receive(Widget *widget) = 0; 00044 00049 virtual bool startDrag(Widget *widget, int x=0, int y=0) = 0; 00050 00051 }; 00052 00053 #endif
1.4.0