lib/connpoint_line.h

   1 /* Dynamic container for connection points  -*- c -*-
   2  * Copyright(C) 2000 Cyrille Chepelov
   3  *
   4  * Connection point line is a helper struct, to hold a few connection points
   5  * on a line segment. There can be a variable number of these connection
   6  * points. The user should be made able to add or remove some connection
   7  * points.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  22  */
  23
  24 #ifndef __CONNPOINT_LINE_H
  25 #define __CONNPOINT_LINE_H
  26
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <assert.h>
  30 #include <math.h>
  31 #include <glib.h>
  32
  33 #include "geometry.h"
  34 #include "connectionpoint.h"
  35 #include "object.h"
  36 #include "dia_xml.h"
  37
  38 typedef struct {
  39   Point start,end;
  40   DiaObject *parent;
  41
  42   int num_connections;
  43   GSList *connections;
  44 } ConnPointLine;
  45
  46
  47 ConnPointLine *connpointline_create(DiaObject *parent,
  48                                     int num_connections);
  49 void connpointline_destroy(ConnPointLine *cpl);
  50 void connpointline_update(ConnPointLine *cpl);
  51 void connpointline_putonaline(ConnPointLine *cpl,Point *start,Point *end);
  52 int connpointline_can_add_point(ConnPointLine *cpl,
  53                                 Point *clicked);
  54 int connpointline_can_remove_point(ConnPointLine *cpl,
  55                                    Point *clicked);
  56
  57 ObjectChange *connpointline_add_points(ConnPointLine *cpl,
  58                                        Point *clickedpoint,
  59                                        int count);
  60 ObjectChange *connpointline_remove_points(ConnPointLine *cpl,
  61                                           Point *clickedpoint,
  62                                           int count);
  63 ConnPointLine *connpointline_load(DiaObject *obj,ObjectNode obj_node,
  64                                   const gchar *name, int default_nc,
  65                                   int *realconncount);
  66 void connpointline_save(ConnPointLine *cpl,ObjectNode obj_node,
  67                         const gchar *name);
  68 ConnPointLine *connpointline_copy(DiaObject *newobj,ConnPointLine *cpl,
  69                                   int *realconncount);
  70
  71 #define connpointline_add_point(cpl, clickedpoint) \
  72     connpointline_add_points(cpl, clickedpoint, 1)
  73 #define connpointline_remove_point(cpl, clickedpoint) \
  74     connpointline_remove_points(cpl, clickedpoint, 1)
  75
  76 int connpointline_adjust_count(ConnPointLine *cpl,
  77                                int newcount, Point *where);
  78
  79 #endif /* __CONNPOINT_LINE_H */
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