krita
kis_canvas_observer.h
00001 /* 00002 * Copyright (c) 2003 Patrick Julien <freak@codepimps.org> 00003 * 00004 * This program is free software; you can redistribute it and/or modify 00005 * it under the terms of the GNU General Public License as published by 00006 * the Free Software Foundation; either version 2 of the License, or 00007 * (at your option) any later version. 00008 * 00009 * This program is distributed in the hope that it will be useful, 00010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 * GNU General Public License for more details. 00013 * 00014 * You should have received a copy of the GNU General Public License 00015 * along with this program; if not, write to the Free Software 00016 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 00017 */ 00018 00019 #ifndef KIS_CANVAS_OBSERVER_H_ 00020 #define KIS_CANVAS_OBSERVER_H_ 00021 00022 class KisCanvasSubject; 00023 00033 class KisCanvasObserver { 00034 public: 00035 KisCanvasObserver() {}; 00036 virtual ~KisCanvasObserver() {}; 00037 00038 public: 00047 virtual void update(KisCanvasSubject *subject) = 0; 00048 00049 private: 00050 KisCanvasObserver(const KisCanvasObserver&); 00051 KisCanvasObserver& operator=(const KisCanvasObserver&); 00052 }; 00053 00054 #endif // KIS_CANVAS_OBSERVER_H_ 00055