bezier-arrow.h

00001 // -*- C++ -*-
00002 
00003 /* 
00004  * Gnome Chemistry Utils
00005  * gccv/bezier-arrow.h 
00006  *
00007  * Copyright (C) 2009 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_BEZIER_ARROW_H
00026 #define GCCV_BEZIER_ARROW_H
00027 
00028 #include "line-item.h"
00029 #include "structs.h"
00030 
00031 namespace gccv {
00032 
00033 class BezierArrow: public LineItem {
00034 public:
00035         BezierArrow (Canvas *canvas);
00036         BezierArrow (Group *parent, ItemClient *client = NULL);
00037         virtual ~BezierArrow ();
00038 
00039         // virtual methods
00040         double Distance (double x, double y, Item **item) const;
00041         void Draw (cairo_t *cr, bool is_vector) const;
00042         void Move (double x, double y);
00043         void UpdateBounds ();
00044         void GetControlPoints (double &x0, double &y0, double &x1, double &y1, double &x2, double &y2, double &x3, double &y3);
00045         void SetControlPoints (double x0, double y0, double x1, double y1, double x2, double y2, double x3, double y3);
00046 
00047 GCCV_ITEM_POS_PROP (ArrowHeads, Head)
00048 GCCV_ITEM_POS_PROP (double, A)
00049 GCCV_ITEM_POS_PROP (double, B)
00050 GCCV_ITEM_POS_PROP (double, C)
00051 GCCV_ITEM_POS_PROP (bool, ShowControls)
00052 
00053 private:
00054         Point m_Controls[4];
00055 };
00056 
00057 }
00058 
00059 
00060 #endif  //  GCCV_BEZIER_ARROW_H

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