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- // $Id: ArcGraphE.h,v 1.8 1998/08/03 11:15:28 zeller Exp $ -*- C++ -*-
- // Arc edges
-
- // Copyright (C) 1997 Technische Universitaet Braunschweig, Germany.
- // Written by Andreas Zeller <zeller@ips.cs.tu-bs.de>.
- //
- // 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 2 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, write to the Free Software Foundation, Inc.,
- // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- //
- // DDD is the data display debugger.
- // For details, see the DDD World-Wide-Web page,
- // `http://www.cs.tu-bs.de/softech/ddd/',
- // or send a mail to the DDD developers <ddd@ips.cs.tu-bs.de>.
-
- #ifndef _DDD_ArcGraphEdge_h
- #define _DDD_ArcGraphEdge_h
-
- #ifdef __GNUG__
- #pragma interface
- #endif
-
- #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,
- 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(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
-