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/* Dia -- an diagram creation/manipulation program
* Copyright (C) 1998 Alexander Larsson
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef CONNECTIONPOINT_H
#define CONNECTIONPOINT_H
#include "diatypes.h"
#include <glib.h>
#include "geometry.h"
/**
* ConnectionPointDirection:
* @DIR_NONE: None
* @DIR_NORTH: North
* @DIR_EAST: East
* @DIR_SOUTH: South
* @DIR_WEST: West
* @DIR_NORTHEAST: %DIR_NORTH + %DIR_EAST
* @DIR_SOUTHEAST: %DIR_SOUTH + %DIR_EAST
* @DIR_NORTHWEST: %DIR_NORTH + %DIR_WEST
* @DIR_SOUTHWEST: %DIR_SOUTH + %DIR_WEST
* @DIR_ALL: All directions
*
* Connections directions, used as hints to e.g. zigzaglines
* Ordered this way to let *2 be rotate clockwise, /2 rotate counterclockwise.
* Used as bits
*/
typedef enum {
DIR_NONE = 0,
DIR_NORTH = (1<<0),
DIR_EAST = (1<<1),
DIR_SOUTH = (1<<2),
DIR_WEST = (1<<3),
/* Convenience directions */
DIR_NORTHEAST = (DIR_NORTH|DIR_EAST),
DIR_SOUTHEAST = (DIR_SOUTH|DIR_EAST),
DIR_NORTHWEST = (DIR_NORTH|DIR_WEST),
DIR_SOUTHWEST = (DIR_SOUTH|DIR_WEST),
DIR_ALL = (DIR_NORTH|DIR_SOUTH|DIR_EAST|DIR_WEST)
} ConnectionPointDirection;
/**
* ConnectionPointFlags:
* @CP_FLAG_ANYPLACE: Set if this connpoint is the one that
is connected to when a connection is
dropped on an object.
* @CP_FLAG_AUTOGAP: Set if this connpoint is internal
and so should force a gap on the lines.
* @CP_FLAGS_MAIN: Use this for the central CP that
takes connections from all over the
object and has autogap.
*
* Additional behaviour flags for connection points
*
* Most non-connection objects want exactly one %CP_FLAGS_MAIN #ConnectionPoint
* in the middle.
*/
typedef enum {
CP_FLAG_ANYPLACE = (1<<0),
CP_FLAG_AUTOGAP = (1<<1),
CP_FLAGS_MAIN = (CP_FLAG_ANYPLACE|CP_FLAG_AUTOGAP)
} ConnectionPointFlags;
/**
* ConnectionPoint:
* @pos: position of this connection point
* @object: pointer to the object having this point
* @connected: list of #DiaObject connected to this point
* @directions: Directions that this connection point is open to
* @flags: Flags set for this connpoint. See #ConnectionPointFlags
*
* To connect object with other objects handles
*/
struct _ConnectionPoint {
Point pos;
DiaObject *object;
GList *connected;
guint8 directions;
guint8 flags;
};
gint find_slope_directions (Point from,
Point to);
void connpoint_update (ConnectionPoint *p,
real x,
real y,
gint dirs);
gboolean connpoint_is_autogap (ConnectionPoint *cp);
#endif /* CONNECTIONPOINT_H */
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