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/* 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 <string.h>
#include <glib-object.h>
#include "paint-types.h"
#include "core/gimpimage-undo.h"
#include "core/gimpimage.h"
#include "core/gimpundo.h"
#include "gimpink.h"
#include "gimpink-blob.h"
#include "gimpink-undo.h"
/**************/
/* Ink Undo */
/**************/
typedef struct _InkUndo InkUndo;
struct _InkUndo
{
GimpInk *ink;
Blob *last_blob;
gdouble dt_buffer[DIST_SMOOTHER_BUFFER];
gint dt_index;
guint32 ts_buffer[TIME_SMOOTHER_BUFFER];
gint ts_index;
gdouble last_time;
gboolean init_velocity;
};
static gboolean undo_pop_ink (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void undo_free_ink (GimpUndo *undo,
GimpUndoMode undo_mode);
gboolean
gimp_ink_push_undo (GimpPaintCore *core,
GimpImage *gimage,
const gchar *undo_desc)
{
GimpUndo *new;
g_return_val_if_fail (GIMP_IS_INK (core), FALSE);
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), FALSE);
if (! GIMP_PAINT_CORE_CLASS (g_type_class_peek_parent (GIMP_INK_GET_CLASS (core)))->push_undo (core, gimage, undo_desc))
return FALSE;
if ((new = gimp_image_undo_push (gimage, GIMP_TYPE_UNDO,
sizeof (InkUndo),
sizeof (InkUndo),
GIMP_UNDO_INK, undo_desc,
FALSE,
undo_pop_ink,
undo_free_ink,
NULL)))
{
GimpInk *ink = GIMP_INK (core);
InkUndo *ink_undo = new->data;
ink_undo->ink = ink;
if (ink->start_blob)
ink_undo->last_blob = blob_duplicate (ink->start_blob);
memcpy (ink_undo->dt_buffer, ink->dt_buffer,
sizeof (ink_undo->dt_buffer));
ink_undo->dt_index = ink->dt_index;
memcpy (ink_undo->ts_buffer, ink->ts_buffer,
sizeof (ink_undo->ts_buffer));
ink_undo->ts_index = ink->ts_index;
ink_undo->last_time = ink->last_time;
ink_undo->init_velocity = ink->init_velocity;
g_object_add_weak_pointer (G_OBJECT (ink), (gpointer) &ink_undo->ink);
return TRUE;
}
return FALSE;
}
static gboolean
undo_pop_ink (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
InkUndo *ink_undo = undo->data;
/* only pop if the core still exists */
if (ink_undo->ink)
{
Blob *tmp_blob;
gint tmp_int;
gdouble tmp_double;
guint32 tmp_int_buf[DIST_SMOOTHER_BUFFER];
gdouble tmp_double_buf[DIST_SMOOTHER_BUFFER];
tmp_blob = ink_undo->ink->last_blob;
ink_undo->ink->last_blob = ink_undo->last_blob;
ink_undo->last_blob = tmp_blob;
memcpy (tmp_double_buf, ink_undo->ink->dt_buffer,
sizeof (tmp_double_buf));
memcpy (ink_undo->ink->dt_buffer, ink_undo->dt_buffer,
sizeof (tmp_double_buf));
memcpy (ink_undo->dt_buffer, tmp_double_buf,
sizeof (tmp_double_buf));
tmp_int = ink_undo->ink->dt_index;
ink_undo->ink->dt_index = ink_undo->dt_index;
ink_undo->dt_index = tmp_int;
memcpy (tmp_int_buf, ink_undo->ink->ts_buffer,
sizeof (tmp_int_buf));
memcpy (ink_undo->ink->ts_buffer, ink_undo->ts_buffer,
sizeof (tmp_int_buf));
memcpy (ink_undo->ts_buffer, tmp_int_buf,
sizeof (tmp_int_buf));
tmp_int = ink_undo->ink->ts_index;
ink_undo->ink->ts_index = ink_undo->ts_index;
ink_undo->ts_index = tmp_int;
tmp_double = ink_undo->ink->last_time;
ink_undo->ink->last_time = ink_undo->last_time;
ink_undo->last_time = tmp_double;
tmp_int = ink_undo->ink->init_velocity;
ink_undo->ink->init_velocity = ink_undo->init_velocity;
ink_undo->init_velocity = tmp_int;
}
return TRUE;
}
static void
undo_free_ink (GimpUndo *undo,
GimpUndoMode undo_mode)
{
InkUndo *ink_undo = undo->data;
if (ink_undo->ink)
g_object_remove_weak_pointer (G_OBJECT (ink_undo->ink),
(gpointer) &ink_undo->ink);
if (ink_undo->last_blob)
g_free (ink_undo->last_blob);
g_free (ink_undo);
}
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