gimp/app/undo_cmds.c

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1997-11-25 06:05:25 +08:00
/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "appenv.h"
#include "drawable.h"
#include "general.h"
#include "undo.h"
#include "undo_cmds.h"
static int int_value;
static int success;
/***************************/
/* UNDO_PUSH_GROUP_START */
static Argument *
undo_push_group_start_invoker (Argument *args)
{
GImage *gimage;
success = TRUE;
if (success)
{
int_value = args[0].value.pdb_int;
if ((gimage = gimage_get_ID (int_value)) == NULL)
success = FALSE;
}
if (success)
undo_push_group_start (gimage, MISC_UNDO);
return procedural_db_return_args (&undo_push_group_start_proc, success);
}
/* The procedure definition */
ProcArg undo_push_group_start_args[] =
{
{ PDB_IMAGE,
"image",
"The ID of the image in which to pop an undo group"
}
};
ProcRecord undo_push_group_start_proc =
{
"gimp_undo_push_group_start",
"Starts a group undo",
"This function is used to start a group undo--necessary for logically combining two or more undo operations into a single operation. This call must be used in conjunction with a 'gimp_undo_push_group_end' call.",
"Spencer Kimball & Peter Mattis",
"Spencer Kimball & Peter Mattis",
"1997",
PDB_INTERNAL,
/* Input arguments */
1,
undo_push_group_start_args,
/* Output arguments */
0,
NULL,
/* Exec method */
{ { undo_push_group_start_invoker } },
};
/*************************/
/* UNDO_PUSH_GROUP_END */
static Argument *
undo_push_group_end_invoker (Argument *args)
{
GImage *gimage;
success = TRUE;
if (success)
{
int_value = args[0].value.pdb_int;
if ((gimage = gimage_get_ID (int_value)) == NULL)
success = FALSE;
}
if (success)
undo_push_group_end (gimage);
return procedural_db_return_args (&undo_push_group_end_proc, success);
}
/* The procedure definition */
ProcArg undo_push_group_end_args[] =
{
{ PDB_IMAGE,
"image",
"The ID of the image in which to pop an undo group"
}
};
ProcRecord undo_push_group_end_proc =
{
"gimp_undo_push_group_end",
"Finish a group undo",
"This function must be called once for each undo_push_group call that is made.",
"Spencer Kimball & Peter Mattis",
"Spencer Kimball & Peter Mattis",
"1997",
PDB_INTERNAL,
/* Input arguments */
1,
undo_push_group_end_args,
/* Output arguments */
0,
NULL,
/* Exec method */
{ { undo_push_group_end_invoker } },
};