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/*
* This is a plug-in for GIMP.
*
* Generates clickable image maps.
*
* Copyright (C) 1998-1999 Maurits Rijk lpeek.mrijk@consunet.nl
*
* 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 3 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, see <https://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include <gtk/gtk.h>
#include "imap_commands.h"
#include "imap_polygon.h"
#include "libgimp/stdplugins-intl.h"
static CmdExecuteValue_t delete_point_command_execute(Command_t *parent);
static void delete_point_command_undo(Command_t *parent);
static CommandClass_t delete_point_command_class = {
NULL, /* delete_point_command_destruct */
delete_point_command_execute,
delete_point_command_undo,
NULL /* delete_point_command_redo */
};
typedef struct {
Command_t parent;
Polygon_t *polygon;
GdkPoint *point;
GdkPoint copy;
gint position;
} DeletePointCommand_t;
Command_t*
delete_point_command_new(Object_t *obj, GdkPoint *point)
{
DeletePointCommand_t *command = g_new(DeletePointCommand_t, 1);
command->polygon = ObjectToPolygon(obj);
command->point = point;
command->copy = *point;
command->position = g_list_index(command->polygon->points,
(gpointer) point);
return command_init(&command->parent, _("Delete Point"),
&delete_point_command_class);
}
static CmdExecuteValue_t
delete_point_command_execute(Command_t *parent)
{
DeletePointCommand_t *command = (DeletePointCommand_t*) parent;
Polygon_t *polygon = command->polygon;
GList *p = g_list_find(polygon->points, (gpointer) command->point);
g_free(p->data);
polygon->points = g_list_remove_link(polygon->points, p);
return CMD_APPEND;
}
static void
delete_point_command_undo(Command_t *parent)
{
DeletePointCommand_t *command = (DeletePointCommand_t*) parent;
Polygon_t *polygon = command->polygon;
GdkPoint *point = &command->copy;
command->point = new_point(point->x, point->y);
polygon->points = g_list_insert(polygon->points, (gpointer) command->point,
command->position);
}
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