// $Id$ -*- C++ -*- // Arc edges // Copyright (C) 1997 Technische Universitaet Braunschweig, Germany. // Written by Andreas Zeller <zeller@gnu.org>. // // This file is part of DDD. // // DDD is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public // License as published by the Free Software Foundation; either // version 3 of the License, or (at your option) any later version. // // DDD is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. // See the GNU General Public License for more details. // // You should have received a copy of the GNU General Public // License along with DDD -- see the file COPYING. // If not, see <http://www.gnu.org/licenses/>. // // DDD is the data display debugger. // For details, see the DDD World-Wide-Web page, // `http://www.gnu.org/software/ddd/', // or send a mail to the DDD developers <ddd@gnu.org>. #ifndef _DDD_ArcGraphEdge_h #define _DDD_ArcGraphEdge_h #include "LineGraphE.h" class ArcGraphEdge: public LineGraphEdge { public: DECLARE_TYPE_INFO protected: // Copy Constructor ArcGraphEdge(const ArcGraphEdge& edge) : LineGraphEdge(edge) {} // Draw line (or arc). void drawLine(Widget w, const BoxRegion& exposed, const GraphGC& gc) const; // Compute the center of the arc enclosing P1, P2, and P3. // Return false iff P1, P2, and P3 form a line (i.e. there is no arc) static bool center(const BoxPoint& p1, const BoxPoint& p2, const BoxPoint& p3, double& x, double& y); // Joint function for drawing and printing void makeLine(Widget w, const BoxRegion& exposed, std::ostream& os, const GraphGC& gc) const; public: // Constructor ArcGraphEdge(GraphNode *from, GraphNode *to, EdgeAnnotation *ann = 0) : LineGraphEdge(from, to, ann) {} // Destructor virtual ~ArcGraphEdge() {} // Printing void _print(std::ostream& os, const GraphGC &gc) const; // Duplicator GraphEdge *dup() const { return new ArcGraphEdge(*this); } }; #endif // _DDD_ArcGraphEdge_h // DON'T ADD ANYTHING BEHIND THIS #endif