lib/connectionpoint.h

   1 /* Dia -- an diagram creation/manipulation program
   2  * Copyright (C) 1998 Alexander Larsson
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18 #ifndef CONNECTIONPOINT_H
  19 #define CONNECTIONPOINT_H
  20
  21 #include "diatypes.h"
  22 #include <glib.h>
  23
  24 #define CONNECTIONPOINT_SIZE 5
  25 #define CHANGED_TRESHOLD 0.001
  26
  27 #include "geometry.h"
  28 #include "object.h"
  29
  30 /* Connections directions, used as hints to zigzaglines */
  31 #define DIR_NORTH 1
  32 #define DIR_SOUTH 2
  33 #define DIR_EAST  4
  34 #define DIR_WEST  8
  35
  36 struct _ConnectionPoint {
  37   Point pos;         /* position of this connection point */
  38   Point last_pos;    /* Used by update_connections_xxx only. */
  39   Object *object;    /* pointer to the object having this point */
  40   GList *connected;  /* list of 'Object *' connected to this point*/
  41   gchar directions;  /* Directions that this connection point is open to */
  42 };
  43
  44 #endif /* CONNECTIONPOINT_H */
  45
  46
  47
  48
  49
  50
  51