group.h

00001 // -*- C++ -*-
00002 
00003 /* 
00004  * Gnome Chemistry Utils
00005  * gccv/group.h 
00006  *
00007  * Copyright (C) 2008 Jean Bréfort <jean.brefort@normalesup.org>
00008  *
00009  * This program is free software; you can redistribute it and/or 
00010  * modify it under the terms of the GNU General Public License as 
00011  * published by the Free Software Foundation; either version 2 of the
00012  * License, or (at your option) any later version.
00013  *
00014  * This program is distributed in the hope that it will be useful,
00015  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00016  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00017  * GNU General Public License for more details.
00018  *
00019  * You should have received a copy of the GNU General Public License
00020  * along with this program; if not, write to the Free Software
00021  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
00022  * USA
00023  */
00024 
00025 #ifndef GCCV_GROUP_H
00026 #define GCCV_GROUP_H
00027 
00028 #include "item.h"
00029 #include <list>
00030 
00031 namespace gccv {
00032 
00033 class Group: public Item
00034 {
00035 public:
00036         Group (Canvas *canvas);
00037         Group (Canvas *canvas, double x, double y);
00038         Group (Group *parent, ItemClient *client = NULL);
00039         Group (Group *parent, double x, double y, ItemClient *client = NULL);
00040         virtual ~Group();
00041 
00042         void AddChild (Item *item);
00043         void RemoveChild (Item *item);
00044         void MoveToFront (Item *item);
00045         void MoveToBack (Item *item);
00046 
00047         Item *GetFirstChild (std::list<Item *>::iterator &it);
00048         Item *GetNextChild (std::list<Item *>::iterator &it);
00049 
00050         void AdjustBounds (double &x0, double &y0, double &x1, double &y1) const;
00051         void SetPosition (double x, double y);
00052 
00053         // virtual methods
00054         double Distance (double x, double y, Item **item) const;
00055         bool Draw (cairo_t *cr, double x0, double y0, double x1, double y1, bool is_vector) const;
00056         void Move (double x, double y);
00057 
00058 protected:
00059         void UpdateBounds ();
00060 
00061 private:
00062         std::list<Item *> m_Children;
00063         double m_x, m_y;        // translation offset
00064 };
00065 
00066 }
00067 
00068 #endif  //       GCCV_GROUP_H

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