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gimp/plug-ins/common/colormap-remap.c

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/* 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 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/>.
*/
/*
* Colormap remapping plug-in
* Copyright (C) 2006 Mukund Sivaraman <muks@mukund.org>
*
* This plug-in takes the colormap and lets you move colors from one index
* to another while keeping the original image visually unmodified.
*
* Such functionality is useful for creating graphics files for applications
* which expect certain indices to contain some specific colors.
*
*/
#include "config.h"
#include <string.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
/* Magic numbers */
#define PLUG_IN_PROC_REMAP "plug-in-colormap-remap"
#define PLUG_IN_PROC_SWAP "plug-in-colormap-swap"
#define PLUG_IN_BINARY "colormap-remap"
#define PLUG_IN_ROLE "gimp-colormap-remap"
typedef struct _Remap Remap;
typedef struct _RemapClass RemapClass;
struct _Remap
{
GimpPlugIn parent_instance;
};
struct _RemapClass
{
GimpPlugInClass parent_class;
};
#define REMAP_TYPE (remap_get_type ())
#define REMAP (obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), REMAP_TYPE, Remap))
GType remap_get_type (void) G_GNUC_CONST;
static GList * remap_query_procedures (GimpPlugIn *plug_in);
static GimpProcedure * remap_create_procedure (GimpPlugIn *plug_in,
const gchar *name);
static GimpValueArray * remap_run (GimpProcedure *procedure,
GimpRunMode run_mode,
GimpImage *image,
GimpDrawable **drawables,
GimpProcedureConfig *config,
gpointer run_data);
static gboolean remap_dialog (GimpProcedure *procedure,
GObject *config,
GimpImage *image);
static gboolean read_image_palette (GimpImage *image,
gint *ncolors_out);
static GtkWidget * create_icon_view (gint col_count,
gint *item_width,
gint *item_height);
static GtkWidget * create_scrolled_window (GtkWidget *dialog,
gint item_width,
gint item_height,
gint ncolors,
gint col_count);
static void remap_sort (gint column,
GtkSortType order);
static void remap_sort_hue (GtkButton *action,
gpointer user_data);
static void remap_sort_sat (GtkButton *action,
gpointer user_data);
static void remap_sort_val (GtkButton *action,
gpointer user_data);
static void remap_sort_index (GtkButton *action,
gpointer user_data);
static void remap_reverse_order (GtkButton *action,
gpointer user_data);
static gboolean real_remap (GimpImage *image);
static gboolean check_index_map (GimpImage *image);
static void populate_index_map_from_store (void);
static void store_last_vals (GimpProcedureConfig *config);
static void read_last_vals (GimpProcedureConfig *config);
G_DEFINE_TYPE (Remap, remap, GIMP_TYPE_PLUG_IN)
GIMP_MAIN (REMAP_TYPE)
DEFINE_STD_SET_I18N
enum
{
COLOR_INDEX,
COLOR_INDEX_TEXT,
COLOR_RGB,
COLOR_H,
COLOR_S,
COLOR_V,
NUM_COLS
};
static GtkListStore *store; /* To store the color indices and other data */
static gint reverse_order[256]; /* store indices to reverse order of icons*/
static guchar index_map_old_new[256]; /* store remapped indices */
static void
remap_class_init (RemapClass *klass)
{
GimpPlugInClass *plug_in_class = GIMP_PLUG_IN_CLASS (klass);
plug_in_class->query_procedures = remap_query_procedures;
plug_in_class->create_procedure = remap_create_procedure;
plug_in_class->set_i18n = STD_SET_I18N;
}
static void
remap_init (Remap *remap)
{
}
static GList *
remap_query_procedures (GimpPlugIn *plug_in)
{
GList *list = NULL;
list = g_list_prepend (list, g_strdup (PLUG_IN_PROC_REMAP));
list = g_list_prepend (list, g_strdup (PLUG_IN_PROC_SWAP));
return list;
}
static GimpProcedure *
remap_create_procedure (GimpPlugIn *plug_in,
const gchar *name)
{
GimpProcedure *procedure = NULL;
if (strcmp (name, PLUG_IN_PROC_REMAP) == 0)
{
procedure = gimp_image_procedure_new (plug_in, name,
GIMP_PDB_PROC_TYPE_PLUGIN,
remap_run, NULL, NULL);
gimp_procedure_set_image_types (procedure, "INDEXED*");
gimp_procedure_set_sensitivity_mask (procedure,
GIMP_PROCEDURE_SENSITIVE_DRAWABLE |
GIMP_PROCEDURE_SENSITIVE_DRAWABLES |
GIMP_PROCEDURE_SENSITIVE_NO_DRAWABLES);
gimp_procedure_set_menu_label (procedure, _("R_earrange Colormap..."));
gimp_procedure_set_icon_name (procedure, GIMP_ICON_COLORMAP);
gimp_procedure_add_menu_path (procedure, "<Image>/Colors/Map/[Colormap]");
gimp_procedure_add_menu_path (procedure, "<Colormap>/Colormap Menu");
gimp_procedure_set_documentation (procedure,
_("Rearrange the colormap"),
_("This procedure takes an indexed "
"image and lets you alter the "
"positions of colors in the colormap "
"without visually changing the image."),
name);
gimp_procedure_set_attribution (procedure,
"Mukund Sivaraman <muks@mukund.org>",
"Mukund Sivaraman <muks@mukund.org>",
"June 2006");
gimp_procedure_add_bytes_argument (procedure, "map",
_("Map"),
_("Remap array for the colormap"),
G_PARAM_READWRITE);
}
else if (strcmp (name, PLUG_IN_PROC_SWAP) == 0)
{
procedure = gimp_image_procedure_new (plug_in, name,
GIMP_PDB_PROC_TYPE_PLUGIN,
remap_run, NULL, NULL);
gimp_procedure_set_image_types (procedure, "INDEXED*");
gimp_procedure_set_sensitivity_mask (procedure,
GIMP_PROCEDURE_SENSITIVE_DRAWABLE |
GIMP_PROCEDURE_SENSITIVE_DRAWABLES |
GIMP_PROCEDURE_SENSITIVE_NO_DRAWABLES);
gimp_procedure_set_menu_label (procedure, _("_Swap Colors"));
gimp_procedure_set_icon_name (procedure, GIMP_ICON_COLORMAP);
gimp_procedure_set_documentation (procedure,
_("Swap two colors in the colormap"),
_("This procedure takes an indexed "
"image and lets you swap the "
"positions of two colors in the "
"colormap without visually changing "
"the image."),
name);
gimp_procedure_set_attribution (procedure,
"Mukund Sivaraman <muks@mukund.org>",
"Mukund Sivaraman <muks@mukund.org>",
"June 2006");
gimp_procedure_add_int_argument (procedure, "index1",
_("Index 1"),
_("First index in the colormap"),
0, 255, 0,
G_PARAM_READWRITE);
gimp_procedure_add_int_argument (procedure, "index2",
_("Index 2"),
_("Second (other) index in the colormap"),
0, 255, 0,
G_PARAM_READWRITE);
}
return procedure;
}
static GimpValueArray *
remap_run (GimpProcedure *procedure,
GimpRunMode run_mode,
GimpImage *image,
GimpDrawable **drawables,
GimpProcedureConfig *config,
gpointer run_data)
{
gint i;
gegl_init (NULL, NULL);
for (i = 0; i < 256; ++i)
{
index_map_old_new[i] = i;
}
if (gimp_image_get_base_type (image) != GIMP_INDEXED)
{
GError *error;
g_set_error (&error, GIMP_PLUG_IN_ERROR, 0,
_("Procedure '%s' only works with indexed images."),
gimp_procedure_get_name (procedure));
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_EXECUTION_ERROR,
error);
}
if (strcmp (gimp_procedure_get_name (procedure), PLUG_IN_PROC_SWAP) == 0)
{
gint index1;
gint index2;
gint temp;
GimpPalette *palette;
gint ncolors;
if (run_mode != GIMP_RUN_NONINTERACTIVE)
{
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_CALLING_ERROR,
NULL);
}
g_object_get (config,
"index1", &index1,
"index2", &index2,
NULL);
palette = gimp_image_get_palette (image);
ncolors = gimp_palette_get_color_count (palette);
if (index1 >= ncolors || index2 >= ncolors
|| index1 < 0 || index2 < 0)
{
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_CALLING_ERROR,
NULL);
}
temp = index_map_old_new[index1];
index_map_old_new[index1] = index_map_old_new[index2];
index_map_old_new[index2] = temp;
real_remap (image);
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_SUCCESS,
NULL);
}
if (run_mode == GIMP_RUN_NONINTERACTIVE ||
run_mode == GIMP_RUN_WITH_LAST_VALS)
{
read_last_vals (config);
if (! check_index_map (image))
{
return gimp_procedure_new_return_values (procedure,
GIMP_PDB_CALLING_ERROR,
NULL);
}
real_remap (image);
gimp_displays_flush ();
return gimp_procedure_new_return_values (procedure, GIMP_PDB_SUCCESS, NULL);
}
if (run_mode == GIMP_RUN_INTERACTIVE &&
remap_dialog (procedure, G_OBJECT (config), image))
{
populate_index_map_from_store ();
real_remap (image);
store_last_vals (config);
gimp_displays_flush ();
return gimp_procedure_new_return_values (procedure, GIMP_PDB_SUCCESS, NULL);
}
return gimp_procedure_new_return_values (procedure, GIMP_PDB_CANCEL, NULL);
}
static gboolean
check_index_map (GimpImage *image)
{
gint i;
gint ncolors;
GimpPalette *palette;
palette = gimp_image_get_palette (image);
ncolors = gimp_palette_get_color_count (palette);
for (i = 0; i < ncolors; ++i)
{
if (index_map_old_new[i] >= ncolors)
{
return FALSE;
}
}
return TRUE;
}
static void
read_last_vals (GimpProcedureConfig *config)
{
const guchar *last_vals;
GBytes *bytes;
gint i;
g_object_get (G_OBJECT (config), "map", &bytes, NULL);
last_vals = g_bytes_get_data (bytes, NULL);
if (bytes != NULL)
{
for (i = 0; i < 256; ++i)
{
index_map_old_new[i] = last_vals[i];
}
}
g_bytes_unref (bytes);
}
static void
store_last_vals (GimpProcedureConfig *config)
{
GBytes *bytes;
bytes = g_bytes_new (&index_map_old_new, sizeof (guchar) * 256);
g_object_set (G_OBJECT (config), "map", bytes, NULL);
g_bytes_unref (bytes);
}
static gboolean
read_image_palette (GimpImage *image,
gint *ncolors_out)
{
GtkTreeIter iter;
gint index;
gint ncolors;
GimpPalette *palette;
GeglColor **colors;
palette = gimp_image_get_palette (image);
ncolors = gimp_palette_get_color_count (palette);
g_return_val_if_fail ((ncolors > 0) && (ncolors <= 256), FALSE);
colors = gimp_palette_get_colors (palette);
for (index = 0; index < ncolors; ++index)
{
GeglColor *c = colors[index];
gfloat hsv[3];
gchar *text = g_strdup_printf ("%d", index);
gegl_color_get_pixel (c, babl_format ("HSV float"), hsv);
reverse_order[index] = ncolors - index - 1;
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
COLOR_INDEX, index,
COLOR_INDEX_TEXT, text,
COLOR_RGB, c,
COLOR_H, hsv[0],
COLOR_S, hsv[1],
COLOR_V, hsv[2],
-1);
g_free (text);
}
gimp_color_array_free (colors);
if (ncolors_out != NULL)
{
*ncolors_out = ncolors;
}
return TRUE;
}
static GtkWidget *
create_icon_view (gint col_count,
gint *item_width,
gint *item_height)
{
GtkWidget *iv;
GtkCellRenderer *renderer;
gint icon_width;
gint icon_height;
GtkIconSize icon_size = GTK_ICON_SIZE_LARGE_TOOLBAR;
gint item_padding = 5;
gint row_spacing = 2;
gint col_spacing = 2;
gint text_height = 21;
gtk_icon_size_lookup (icon_size, &icon_width, &icon_height);
*item_width = icon_width + item_padding * 2 + row_spacing + col_spacing;
*item_height = icon_height + text_height + item_padding * 2;
iv = gtk_icon_view_new_with_model (GTK_TREE_MODEL (store));
gtk_icon_view_set_selection_mode (GTK_ICON_VIEW (iv), GTK_SELECTION_SINGLE);
gtk_icon_view_set_item_orientation (GTK_ICON_VIEW (iv), GTK_ORIENTATION_VERTICAL);
gtk_icon_view_set_item_padding (GTK_ICON_VIEW (iv), item_padding);
gtk_icon_view_set_columns (GTK_ICON_VIEW (iv), col_count);
gtk_icon_view_set_row_spacing (GTK_ICON_VIEW (iv), row_spacing);
gtk_icon_view_set_column_spacing (GTK_ICON_VIEW (iv), col_spacing);
gtk_icon_view_set_reorderable (GTK_ICON_VIEW (iv), TRUE);
gtk_widget_set_can_focus (iv, TRUE);
renderer = gimp_cell_renderer_color_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (iv), renderer, TRUE);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (iv), renderer,
"color", COLOR_RGB,
NULL);
g_object_set (renderer,
"icon-size", icon_size,
"xpad", 0,
"ypad", 0,
NULL);
renderer = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (iv), renderer, TRUE);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (iv), renderer,
"text", COLOR_INDEX_TEXT,
NULL);
g_object_set (renderer,
"size-points", 9.0, /*TODO: should it be scaled with the UI scale ? */
"xalign", 0.5,
NULL);
return iv;
}
static GtkWidget *
create_scrolled_window (GtkWidget *dialog,
gint item_width,
gint item_height,
gint ncolors,
gint col_count)
{
GtkWidget *sw;
gint nrows;
gint widget_padding = 6 * 2;
nrows = MIN (ncolors / col_count + 1, 8);
if (ncolors > 99)
item_width += 4; /* take into account increased text width when indices > 99 */
/* last parameter is intentionally set to 'dummy'
* so we can create scrolled window before the container contents.
* The window contents will be inserted at the later step */
sw = gimp_procedure_dialog_fill_scrolled_window (GIMP_PROCEDURE_DIALOG (dialog), "sw",
"intentional-dummy");
gtk_widget_set_size_request (sw, item_width * col_count, -1);
gtk_widget_set_vexpand (sw, TRUE);
gtk_scrolled_window_set_min_content_width (GTK_SCROLLED_WINDOW (sw),
item_width * col_count);
gtk_scrolled_window_set_min_content_height (GTK_SCROLLED_WINDOW (sw),
item_height * nrows + widget_padding);
return sw;
}
static void
remap_sort (gint column,
GtkSortType order)
{
#define REMAP_COL_ID GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID
gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (store), column, order);
gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (store), REMAP_COL_ID, 0);
#undef REMAP_COL_ID
}
static void
remap_sort_hue (GtkButton *button,
gpointer user_data)
{
remap_sort (COLOR_H, GTK_SORT_ASCENDING);
}
static void
remap_sort_sat (GtkButton *button,
gpointer user_data)
{
remap_sort (COLOR_S, GTK_SORT_ASCENDING);
}
static void
remap_sort_val (GtkButton *button,
gpointer user_data)
{
remap_sort (COLOR_V, GTK_SORT_ASCENDING);
}
static void
remap_sort_index (GtkButton *button,
gpointer user_data)
{
remap_sort (COLOR_INDEX, GTK_SORT_ASCENDING);
}
static void
remap_reverse_order (GtkButton *button,
gpointer user_data)
{
gtk_list_store_reorder (store, reverse_order);
}
static gboolean
remap_dialog (GimpProcedure *procedure,
GObject *config,
GimpImage *image)
{
GtkWidget *dialog;
GtkWidget *button;
GtkWidget *w;
GtkWidget *hintbox;
GtkWidget *box;
GtkWidget *box2;
GtkWidget *icons;
gboolean run;
gint ncolors;
gint item_width;
gint item_height;
gint col_count = 16;
gimp_ui_init (PLUG_IN_BINARY);
dialog = gimp_procedure_dialog_new (procedure,
GIMP_PROCEDURE_CONFIG (config),
_("Rearrange Colors"));
gimp_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
gimp_window_set_transient (GTK_WINDOW (dialog));
store = gtk_list_store_new (NUM_COLS,
G_TYPE_INT, G_TYPE_STRING, GEGL_TYPE_COLOR,
G_TYPE_DOUBLE, G_TYPE_DOUBLE, G_TYPE_DOUBLE);
if (! read_image_palette (image, &ncolors))
{
return FALSE;
}
icons = create_icon_view (col_count, &item_width, &item_height);
/* scrolled window widget name is "sw" */
w = create_scrolled_window (dialog, item_width, item_height, ncolors, col_count);
gtk_container_add (GTK_CONTAINER (w), icons);
/* "dummy" is intentional. so we can "fill the box" and then actually fill it with our controls */
box2 = gimp_procedure_dialog_fill_box (GIMP_PROCEDURE_DIALOG (dialog), "buttonbox",
"intentional-dummy", NULL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (box2),
GTK_ORIENTATION_HORIZONTAL);
gtk_widget_set_margin_bottom (box2, 12);
gtk_widget_set_margin_top (box2, 12);
button = gtk_button_new_with_label (_("Sort on Hue"));
gtk_box_pack_start (GTK_BOX (box2), button, TRUE, FALSE, 0);
g_signal_connect (button, "clicked",
G_CALLBACK (remap_sort_hue),
NULL);
button = gtk_button_new_with_label (_("Sort on Saturation"));
gtk_box_pack_start (GTK_BOX (box2), button, TRUE, FALSE, 0);
g_signal_connect (button, "clicked",
G_CALLBACK (remap_sort_sat),
NULL);
button = gtk_button_new_with_label (_("Sort on Value"));
gtk_box_pack_start (GTK_BOX (box2), button, TRUE, FALSE, 0);
g_signal_connect (button, "clicked",
G_CALLBACK (remap_sort_val),
NULL);
button = gtk_button_new_with_label (_("Reverse Order"));
gtk_box_pack_start (GTK_BOX (box2), button, TRUE, FALSE, 0);
g_signal_connect (button, "clicked",
G_CALLBACK (remap_reverse_order),
NULL);
button = gtk_button_new_with_label (_("Reset Order"));
gtk_box_pack_start (GTK_BOX (box2), button, TRUE, FALSE, 0);
g_signal_connect (button, "clicked",
G_CALLBACK (remap_sort_index),
NULL);
box = gimp_procedure_dialog_fill_box (GIMP_PROCEDURE_DIALOG (dialog), "vbox",
"sw", "buttonbox", NULL);
hintbox = gimp_hint_box_new (_("Drag and drop colors to rearrange the colormap.\n"
"The numbers shown are the original indices."));
gtk_box_pack_start (GTK_BOX (box), hintbox, FALSE, FALSE, 0);
gimp_procedure_dialog_fill (GIMP_PROCEDURE_DIALOG (dialog),
"vbox", NULL);
gtk_widget_show_all (dialog);
run = gimp_procedure_dialog_run (GIMP_PROCEDURE_DIALOG (dialog));
gtk_widget_destroy (dialog);
return run;
}
static void
populate_index_map_from_store (void)
{
GtkTreeIter iter;
gint old_index = 0;
gboolean valid;
for (valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (store), &iter);
valid;
valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (store), &iter))
{
gint new_index;
gtk_tree_model_get (GTK_TREE_MODEL (store), &iter,
COLOR_INDEX, &new_index,
-1);
index_map_old_new[old_index] = new_index;
++old_index;
}
}
static gboolean
real_remap (GimpImage *image)
{
guchar pixmap[256]; /* map new-pixel index to old. pixmap[new-index] = old-index */
gint i;
gint ncolors;
GimpPalette *palette;
GeglColor **colors;
GList *layers;
GList *list;
glong total_pixels = 0;
glong processed = 0;
palette = gimp_image_get_palette (image);
ncolors = gimp_palette_get_color_count (palette);
colors = gimp_palette_get_colors (palette);
gimp_image_undo_group_start (image);
for (i = 0; i < ncolors; ++i)
{
gint new_index = index_map_old_new[i];
pixmap[new_index] = i;
gimp_palette_set_entry_color (palette, i, colors[new_index]);
}
gimp_color_array_free (colors);
gimp_progress_init (_("Rearranging the colormap"));
layers = gimp_image_list_layers (image);
/** There is no needs to process the layers recursively, because
* indexed images cannot have layer groups.
*/
for (list = layers; list; list = list->next)
{
total_pixels += gimp_drawable_get_width (list->data) *
gimp_drawable_get_height (list->data);
}
for (list = layers; list; list = list->next)
{
GeglBuffer *buffer;
GeglBuffer *shadow;
const Babl *format;
GeglBufferIterator *iter;
GeglRectangle *src_roi;
GeglRectangle *dest_roi;
gint width, height, bpp;
gint update = 0;
buffer = gimp_drawable_get_buffer (list->data);
shadow = gimp_drawable_get_shadow_buffer (list->data);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
format = gegl_buffer_get_format (buffer);
bpp = babl_format_get_bytes_per_pixel (format);
iter = gegl_buffer_iterator_new (buffer,
GEGL_RECTANGLE (0, 0, width, height), 0,
format,
GEGL_ACCESS_READ, GEGL_ABYSS_NONE, 2);
src_roi = &iter->items[0].roi;
gegl_buffer_iterator_add (iter, shadow,
GEGL_RECTANGLE (0, 0, width, height), 0,
format,
GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE);
dest_roi = &iter->items[1].roi;
while (gegl_buffer_iterator_next (iter))
{
const guchar *src_row = iter->items[0].data;
guchar *dest_row = iter->items[1].data;
gint y;
for (y = 0; y < src_roi->height; y++)
{
const guchar *src = src_row;
guchar *dest = dest_row;
gint x;
if (bpp == 1)
{
for (x = 0; x < src_roi->width; x++)
*dest++ = pixmap[*src++];
}
else
{
for (x = 0; x < src_roi->width; x++)
{
*dest++ = pixmap[*src++];
*dest++ = *src++;
}
}
src_row += src_roi->width * bpp;
dest_row += dest_roi->width * bpp;
}
processed += src_roi->width * src_roi->height;
update %= 16;
if (update == 0)
{
gimp_progress_update ((gdouble) processed / total_pixels);
}
update++;
}
g_object_unref (buffer);
g_object_unref (shadow);
gimp_drawable_merge_shadow (list->data, TRUE);
gimp_drawable_update (list->data, 0, 0, width, height);
}
gimp_image_undo_group_end (image);
g_list_free (layers);
gimp_progress_update (1.0);
return TRUE;
}
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