mirror of https://github.com/GNOME/gimp.git
114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <glib-object.h>
|
|
|
|
#include "paint-types.h"
|
|
|
|
#include "core/gimpimage-undo.h"
|
|
#include "core/gimpimage.h"
|
|
#include "core/gimpundo.h"
|
|
|
|
#include "gimppaintcore.h"
|
|
#include "gimppaintcore-undo.h"
|
|
|
|
|
|
/****************/
|
|
/* Paint Undo */
|
|
/****************/
|
|
|
|
typedef struct _PaintUndo PaintUndo;
|
|
|
|
struct _PaintUndo
|
|
{
|
|
GimpPaintCore *core;
|
|
GimpCoords last_coords;
|
|
};
|
|
|
|
static gboolean undo_pop_paint (GimpUndo *undo,
|
|
GimpUndoMode undo_mode,
|
|
GimpUndoAccumulator *accum);
|
|
static void undo_free_paint (GimpUndo *undo,
|
|
GimpUndoMode undo_mode);
|
|
|
|
gboolean
|
|
gimp_paint_core_real_push_undo (GimpPaintCore *core,
|
|
GimpImage *image,
|
|
const gchar *undo_desc)
|
|
{
|
|
GimpUndo *new;
|
|
|
|
g_return_val_if_fail (GIMP_IS_PAINT_CORE (core), FALSE);
|
|
g_return_val_if_fail (GIMP_IS_IMAGE (image), FALSE);
|
|
|
|
if ((new = gimp_image_undo_push (image, GIMP_TYPE_UNDO,
|
|
sizeof (PaintUndo),
|
|
sizeof (PaintUndo),
|
|
GIMP_UNDO_PAINT, undo_desc,
|
|
FALSE,
|
|
undo_pop_paint,
|
|
undo_free_paint,
|
|
NULL)))
|
|
{
|
|
PaintUndo *pu = new->data;
|
|
|
|
pu->core = core;
|
|
pu->last_coords = core->start_coords;
|
|
|
|
g_object_add_weak_pointer (G_OBJECT (core), (gpointer) &pu->core);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
undo_pop_paint (GimpUndo *undo,
|
|
GimpUndoMode undo_mode,
|
|
GimpUndoAccumulator *accum)
|
|
{
|
|
PaintUndo *pu = undo->data;
|
|
|
|
/* only pop if the core still exists */
|
|
if (pu->core)
|
|
{
|
|
GimpCoords tmp_coords;
|
|
|
|
tmp_coords = pu->core->last_coords;
|
|
pu->core->last_coords = pu->last_coords;
|
|
pu->last_coords = tmp_coords;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
undo_free_paint (GimpUndo *undo,
|
|
GimpUndoMode undo_mode)
|
|
{
|
|
PaintUndo *pu = undo->data;
|
|
|
|
if (pu->core)
|
|
g_object_remove_weak_pointer (G_OBJECT (pu->core), (gpointer) &pu->core);
|
|
|
|
g_free (pu);
|
|
}
|