gimp/app/core/gimpmaskundo.c

227 lines
7.0 KiB
C

/* GIMP - The GNU 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 <gegl.h>
#include "core-types.h"
#include "base/pixel-region.h"
#include "base/tile-manager.h"
#include "paint-funcs/paint-funcs.h"
#include "gimpchannel.h"
#include "gimpmaskundo.h"
static GObject * gimp_mask_undo_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static gint64 gimp_mask_undo_get_memsize (GimpObject *object,
gint64 *gui_size);
static void gimp_mask_undo_pop (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum);
static void gimp_mask_undo_free (GimpUndo *undo,
GimpUndoMode undo_mode);
G_DEFINE_TYPE (GimpMaskUndo, gimp_mask_undo, GIMP_TYPE_ITEM_UNDO)
#define parent_class gimp_mask_undo_parent_class
static void
gimp_mask_undo_class_init (GimpMaskUndoClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpObjectClass *gimp_object_class = GIMP_OBJECT_CLASS (klass);
GimpUndoClass *undo_class = GIMP_UNDO_CLASS (klass);
object_class->constructor = gimp_mask_undo_constructor;
gimp_object_class->get_memsize = gimp_mask_undo_get_memsize;
undo_class->pop = gimp_mask_undo_pop;
undo_class->free = gimp_mask_undo_free;
}
static void
gimp_mask_undo_init (GimpMaskUndo *undo)
{
}
static GObject *
gimp_mask_undo_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpMaskUndo *mask_undo;
GimpChannel *channel;
gint x1, y1, x2, y2;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
mask_undo = GIMP_MASK_UNDO (object);
g_assert (GIMP_IS_CHANNEL (GIMP_ITEM_UNDO (object)->item));
channel = GIMP_CHANNEL (GIMP_ITEM_UNDO (object)->item);
if (gimp_channel_bounds (channel, &x1, &y1, &x2, &y2))
{
GimpDrawable *drawable = GIMP_DRAWABLE (channel);
PixelRegion srcPR, destPR;
mask_undo->tiles = tile_manager_new (x2 - x1, y2 - y1,
gimp_drawable_bytes (drawable));
mask_undo->x = x1;
mask_undo->y = y1;
pixel_region_init (&srcPR, gimp_drawable_get_tiles (drawable),
x1, y1, x2 - x1, y2 - y1, FALSE);
pixel_region_init (&destPR, mask_undo->tiles,
0, 0, x2 - x1, y2 - y1, TRUE);
copy_region (&srcPR, &destPR);
}
return object;
}
static gint64
gimp_mask_undo_get_memsize (GimpObject *object,
gint64 *gui_size)
{
GimpMaskUndo *mask_undo = GIMP_MASK_UNDO (object);
gint64 memsize = 0;
memsize += tile_manager_get_memsize (mask_undo->tiles, FALSE);
return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object,
gui_size);
}
static void
gimp_mask_undo_pop (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
GimpMaskUndo *mask_undo = GIMP_MASK_UNDO (undo);
GimpChannel *channel = GIMP_CHANNEL (GIMP_ITEM_UNDO (undo)->item);
TileManager *new_tiles;
PixelRegion srcPR, destPR;
gint x1, y1, x2, y2;
gint width = 0;
gint height = 0;
GIMP_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
if (gimp_channel_bounds (channel, &x1, &y1, &x2, &y2))
{
new_tiles = tile_manager_new (x2 - x1, y2 - y1, 1);
pixel_region_init (&srcPR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (channel)),
x1, y1, x2 - x1, y2 - y1, FALSE);
pixel_region_init (&destPR, new_tiles,
0, 0, x2 - x1, y2 - y1, TRUE);
copy_region (&srcPR, &destPR);
pixel_region_init (&srcPR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (channel)),
x1, y1, x2 - x1, y2 - y1, TRUE);
clear_region (&srcPR);
}
else
{
new_tiles = NULL;
}
if (mask_undo->tiles)
{
width = tile_manager_width (mask_undo->tiles);
height = tile_manager_height (mask_undo->tiles);
pixel_region_init (&srcPR, mask_undo->tiles,
0, 0, width, height, FALSE);
pixel_region_init (&destPR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (channel)),
mask_undo->x, mask_undo->y, width, height, TRUE);
copy_region (&srcPR, &destPR);
tile_manager_unref (mask_undo->tiles);
}
/* invalidate the current bounds and boundary of the mask */
gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (channel));
if (mask_undo->tiles)
{
channel->empty = FALSE;
channel->x1 = mask_undo->x;
channel->y1 = mask_undo->y;
channel->x2 = mask_undo->x + width;
channel->y2 = mask_undo->y + height;
}
else
{
channel->empty = TRUE;
channel->x1 = 0;
channel->y1 = 0;
channel->x2 = gimp_item_get_width (GIMP_ITEM (channel));
channel->y2 = gimp_item_get_height (GIMP_ITEM (channel));
}
/* we know the bounds */
channel->bounds_known = TRUE;
/* set the new mask undo parameters */
mask_undo->tiles = new_tiles;
mask_undo->x = x1;
mask_undo->y = y1;
gimp_drawable_update (GIMP_DRAWABLE (channel),
0, 0,
gimp_item_get_width (GIMP_ITEM (channel)),
gimp_item_get_height (GIMP_ITEM (channel)));
}
static void
gimp_mask_undo_free (GimpUndo *undo,
GimpUndoMode undo_mode)
{
GimpMaskUndo *mask_undo = GIMP_MASK_UNDO (undo);
if (mask_undo->tiles)
{
tile_manager_unref (mask_undo->tiles);
mask_undo->tiles = NULL;
}
GIMP_UNDO_CLASS (parent_class)->free (undo, undo_mode);
}