The Gnome Chemistry Utils 0.13.3
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00001 // -*- C++ -*- 00002 00003 /* 00004 * Gnome Chemistry Utils 00005 * gccv/bezier-arrow.h 00006 * 00007 * Copyright (C) 2009-2010 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 00033 namespace gccv { 00034 00040 class BezierArrow: public LineItem { 00041 public: 00048 BezierArrow (Canvas *canvas); 00056 BezierArrow (Group *parent, ItemClient *client = NULL); 00060 virtual ~BezierArrow (); 00061 00062 // virtual methods 00070 double Distance (double x, double y, Item **item) const; 00077 void Draw (cairo_t *cr, bool is_vector) const; 00084 void Move (double x, double y); 00085 00086 protected: 00090 void UpdateBounds (); 00091 00092 public: 00106 void GetControlPoints (double &x0, double &y0, double &x1, double &y1, double &x2, double &y2, double &x3, double &y3); 00120 void SetControlPoints (double x0, double y0, double x1, double y1, double x2, double y2, double x3, double y3); 00121 00130 GCCV_ITEM_POS_PROP (ArrowHeads, Head) 00139 GCCV_ITEM_POS_PROP (double, A) 00149 GCCV_ITEM_POS_PROP (double, B) 00158 GCCV_ITEM_POS_PROP (double, C) 00169 GCCV_ITEM_POS_PROP (bool, ShowControls) 00170 00171 private: 00172 Point m_Controls[4]; 00173 }; 00174 00175 } 00176 00177 00178 #endif // GCCV_BEZIER_ARROW_H