1 /*
2 * This is a plug-in for GIMP.
3 *
4 * Generates clickable image maps.
5 *
6 * Copyright (C) 1998-1999 Maurits Rijk lpeek.mrijk@consunet.nl
7 *
8 * This program is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <https://www.gnu.org/licenses/>.
20 *
21 */
22
23 #include "config.h"
24
25 #include <gtk/gtk.h>
26
27 #include "imap_commands.h"
28 #include "imap_polygon.h"
29
30 #include "libgimp/stdplugins-intl.h"
31
32 static CmdExecuteValue_t delete_point_command_execute(Command_t *parent);
33 static void delete_point_command_undo(Command_t *parent);
34
35 static CommandClass_t delete_point_command_class = {
36 NULL, /* delete_point_command_destruct */
37 delete_point_command_execute,
38 delete_point_command_undo,
39 NULL /* delete_point_command_redo */
40 };
41
42 typedef struct {
43 Command_t parent;
44 Polygon_t *polygon;
45 GdkPoint *point;
46 GdkPoint copy;
47 gint position;
48 } DeletePointCommand_t;
49
50 Command_t*
delete_point_command_new(Object_t * obj,GdkPoint * point)51 delete_point_command_new(Object_t *obj, GdkPoint *point)
52 {
53 DeletePointCommand_t *command = g_new(DeletePointCommand_t, 1);
54
55 command->polygon = ObjectToPolygon(obj);
56 command->point = point;
57 command->copy = *point;
58 command->position = g_list_index(command->polygon->points,
59 (gpointer) point);
60 return command_init(&command->parent, _("Delete Point"),
61 &delete_point_command_class);
62 }
63
64 static CmdExecuteValue_t
delete_point_command_execute(Command_t * parent)65 delete_point_command_execute(Command_t *parent)
66 {
67 DeletePointCommand_t *command = (DeletePointCommand_t*) parent;
68 Polygon_t *polygon = command->polygon;
69 GList *p = g_list_find(polygon->points, (gpointer) command->point);
70
71 g_free(p->data);
72 polygon->points = g_list_remove_link(polygon->points, p);
73 return CMD_APPEND;
74 }
75
76 static void
delete_point_command_undo(Command_t * parent)77 delete_point_command_undo(Command_t *parent)
78 {
79 DeletePointCommand_t *command = (DeletePointCommand_t*) parent;
80 Polygon_t *polygon = command->polygon;
81 GdkPoint *point = &command->copy;
82
83 command->point = new_point(point->x, point->y);
84 polygon->points = g_list_insert(polygon->points, (gpointer) command->point,
85 command->position);
86 }
87