gimp/app/widgets/gimppropgui-constructors.c

720 lines
25 KiB
C

/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis
*
* gimppropgui-constructors.c
* Copyright (C) 2002-2014 Michael Natterer <mitch@gimp.org>
* Sven Neumann <sven@gimp.org>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <gegl.h>
#include <gegl-paramspecs.h>
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpbase/gimpbase.h"
#include "libgimpconfig/gimpconfig.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "gegl/gimp-gegl-utils.h"
#include "core/gimpcontext.h"
#include "gimppropgui.h"
#include "gimppropgui-constructors.h"
#include "gimppropwidgets.h"
#include "gimp-intl.h"
#define HAS_KEY(p,k,v) gimp_gegl_param_spec_has_key (p, k, v)
static void gimp_prop_gui_chain_toggled (GimpChainButton *chain,
GtkAdjustment *x_adj);
/* public functions */
GtkWidget *
_gimp_prop_gui_new_generic (GObject *config,
GParamSpec **param_specs,
guint n_param_specs,
GimpContext *context,
GimpCreatePickerFunc create_picker_func,
gpointer picker_creator)
{
GtkWidget *main_vbox;
GtkSizeGroup *label_group;
gint i;
g_return_val_if_fail (G_IS_OBJECT (config), NULL);
g_return_val_if_fail (param_specs != NULL, NULL);
g_return_val_if_fail (n_param_specs > 0, NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
label_group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
for (i = 0; i < n_param_specs; i++)
{
GParamSpec *pspec = param_specs[i];
GParamSpec *next_pspec = NULL;
if (i < n_param_specs - 1)
next_pspec = param_specs[i + 1];
if (next_pspec &&
HAS_KEY (pspec, "axis", "x") &&
HAS_KEY (next_pspec, "axis", "y"))
{
GtkWidget *widget_x;
GtkWidget *widget_y;
const gchar *label_x;
const gchar *label_y;
GtkAdjustment *adj_x;
GtkAdjustment *adj_y;
GtkWidget *hbox;
GtkWidget *vbox;
GtkWidget *chain;
i++;
widget_x = gimp_prop_widget_new_from_pspec (config, pspec, context,
create_picker_func,
picker_creator,
&label_x);
widget_y = gimp_prop_widget_new_from_pspec (config, next_pspec, context,
create_picker_func,
picker_creator,
&label_y);
adj_x = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget_x));
adj_y = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget_y));
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
gtk_box_pack_start (GTK_BOX (vbox), widget_x, FALSE, FALSE, 0);
gtk_widget_show (widget_x);
gtk_box_pack_start (GTK_BOX (vbox), widget_y, FALSE, FALSE, 0);
gtk_widget_show (widget_y);
chain = gimp_chain_button_new (GIMP_CHAIN_RIGHT);
gtk_box_pack_end (GTK_BOX (hbox), chain, FALSE, FALSE, 0);
gtk_widget_show (chain);
if (! HAS_KEY (pspec, "unit", "pixel-coordinate") &&
! HAS_KEY (pspec, "unit", "relative-coordinate") &&
gtk_adjustment_get_value (adj_x) ==
gtk_adjustment_get_value (adj_y))
{
GBinding *binding;
gimp_chain_button_set_active (GIMP_CHAIN_BUTTON (chain), TRUE);
binding = g_object_bind_property (adj_x, "value",
adj_y, "value",
G_BINDING_BIDIRECTIONAL);
g_object_set_data (G_OBJECT (chain), "binding", binding);
}
g_signal_connect (chain, "toggled",
G_CALLBACK (gimp_prop_gui_chain_toggled),
adj_x);
g_object_set_data (G_OBJECT (adj_x), "y-adjustment", adj_y);
if (create_picker_func &&
(HAS_KEY (pspec, "unit", "pixel-coordinate") ||
HAS_KEY (pspec, "unit", "relative-coordinate")))
{
GtkWidget *button;
gchar *pspec_name;
pspec_name = g_strconcat (pspec->name, ":",
next_pspec->name, NULL);
button = create_picker_func (picker_creator,
pspec_name,
GIMP_STOCK_CURSOR,
_("Pick coordinates from the image"));
gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
g_object_weak_ref (G_OBJECT (button),
(GWeakNotify) g_free, pspec_name);
}
}
else
{
GtkWidget *widget;
const gchar *label;
widget = gimp_prop_widget_new_from_pspec (config, pspec, context,
create_picker_func,
picker_creator,
&label);
if (widget && label)
{
GtkWidget *hbox;
GtkWidget *l;
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
l = gtk_label_new_with_mnemonic (label);
gtk_misc_set_alignment (GTK_MISC (l), 0.0, 0.5);
gtk_size_group_add_widget (label_group, l);
gtk_box_pack_start (GTK_BOX (hbox), l, FALSE, FALSE, 0);
gtk_widget_show (l);
gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
gtk_widget_show (widget);
}
else if (widget)
{
gtk_box_pack_start (GTK_BOX (main_vbox), widget, FALSE, FALSE, 0);
gtk_widget_show (widget);
}
}
}
g_object_unref (label_group);
return main_vbox;
}
static void
invert_segment_clicked (GtkWidget *button,
GtkWidget *dial)
{
gdouble alpha, beta;
gboolean clockwise;
g_object_get (dial,
"alpha", &alpha,
"beta", &beta,
"clockwise", &clockwise,
NULL);
g_object_set (dial,
"alpha", beta,
"beta", alpha,
"clockwise", ! clockwise,
NULL);
}
static void
select_all_clicked (GtkWidget *button,
GtkWidget *dial)
{
gdouble alpha, beta;
gboolean clockwise;
g_object_get (dial,
"alpha", &alpha,
"clockwise", &clockwise,
NULL);
beta = alpha - (clockwise ? -1 : 1) * 0.00001;
if (beta < 0)
beta += 2 * G_PI;
if (beta > 2 * G_PI)
beta -= 2 * G_PI;
g_object_set (dial,
"beta", beta,
NULL);
}
static GtkWidget *
gimp_prop_angle_range_box_new (GObject *config,
const gchar *alpha_property_name,
const gchar *beta_property_name,
const gchar *clockwise_property_name)
{
GtkWidget *main_hbox;
GtkWidget *vbox;
GtkWidget *scale;
GtkWidget *hbox;
GtkWidget *button;
GtkWidget *invert_button;
GtkWidget *all_button;
GtkWidget *dial;
main_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 4);
gtk_box_pack_start (GTK_BOX (main_hbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
scale = gimp_prop_spin_scale_new (config, alpha_property_name, NULL,
1.0, 15.0, 2);
gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (scale), TRUE);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
scale = gimp_prop_spin_scale_new (config, beta_property_name, NULL,
1.0, 15.0, 2);
gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (scale), TRUE);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
button = gimp_prop_check_button_new (config, clockwise_property_name,
_("Clockwise"));
gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
gtk_widget_show (button);
invert_button = gtk_button_new_with_label ("Invert Range");
gtk_box_pack_start (GTK_BOX (hbox), invert_button, TRUE, TRUE, 0);
gtk_widget_show (invert_button);
all_button = gtk_button_new_with_label ("Select All");
gtk_box_pack_start (GTK_BOX (hbox), all_button, TRUE, TRUE, 0);
gtk_widget_show (all_button);
dial = gimp_prop_angle_range_dial_new (config,
alpha_property_name,
beta_property_name,
clockwise_property_name);
gtk_box_pack_start (GTK_BOX (main_hbox), dial, FALSE, FALSE, 0);
gtk_widget_show (dial);
g_signal_connect (invert_button, "clicked",
G_CALLBACK (invert_segment_clicked),
dial);
g_signal_connect (all_button, "clicked",
G_CALLBACK (select_all_clicked),
dial);
return main_hbox;
}
static GtkWidget *
gimp_prop_polar_box_new (GObject *config,
const gchar *angle_property_name,
const gchar *radius_property_name)
{
GtkWidget *main_hbox;
GtkWidget *vbox;
GtkWidget *scale;
GtkWidget *polar;
main_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 4);
gtk_box_pack_start (GTK_BOX (main_hbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
scale = gimp_prop_spin_scale_new (config, angle_property_name, NULL,
1.0, 15.0, 2);
gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (scale), TRUE);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
scale = gimp_prop_spin_scale_new (config, radius_property_name, NULL,
1.0, 15.0, 2);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
polar = gimp_prop_polar_new (config,
angle_property_name,
radius_property_name);
gtk_box_pack_start (GTK_BOX (main_hbox), polar, FALSE, FALSE, 0);
gtk_widget_show (polar);
return main_hbox;
}
GtkWidget *
_gimp_prop_gui_new_color_rotate (GObject *config,
GParamSpec **param_specs,
guint n_param_specs,
GimpContext *context,
GimpCreatePickerFunc create_picker_func,
gpointer picker_creator)
{
GtkWidget *main_vbox;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *box;
g_return_val_if_fail (G_IS_OBJECT (config), NULL);
g_return_val_if_fail (param_specs != NULL, NULL);
g_return_val_if_fail (n_param_specs > 0, NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 4);
frame = gimp_frame_new (_("Source Range"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
box = gimp_prop_angle_range_box_new (config,
param_specs[1]->name,
param_specs[2]->name,
param_specs[0]->name);
gtk_container_add (GTK_CONTAINER (frame), box);
gtk_widget_show (box);
frame = gimp_frame_new (_("Destination Range"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
box = gimp_prop_angle_range_box_new (config,
param_specs[4]->name,
param_specs[5]->name,
param_specs[3]->name);
gtk_container_add (GTK_CONTAINER (frame), box);
gtk_widget_show (box);
frame = gimp_frame_new (_("Gray Handling"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
box = _gimp_prop_gui_new_generic (config,
param_specs + 6, 2,
context,
create_picker_func,
picker_creator);
gtk_box_pack_start (GTK_BOX (vbox), box, FALSE, FALSE, 0);
gtk_widget_show (box);
box = gimp_prop_polar_box_new (config,
param_specs[8]->name,
param_specs[9]->name);
gtk_box_pack_start (GTK_BOX (vbox), box, FALSE, FALSE, 0);
gtk_widget_show (box);
return main_vbox;
}
GtkWidget *
_gimp_prop_gui_new_convolution_matrix (GObject *config,
GParamSpec **param_specs,
guint n_param_specs,
GimpContext *context,
GimpCreatePickerFunc create_picker_func,
gpointer picker_creator)
{
GtkWidget *main_vbox;
GtkWidget *table;
GtkWidget *hbox;
GtkWidget *scale;
GtkWidget *vbox;
const gchar *label;
gint x, y;
g_return_val_if_fail (G_IS_OBJECT (config), NULL);
g_return_val_if_fail (param_specs != NULL, NULL);
g_return_val_if_fail (n_param_specs > 0, NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
table = gtk_table_new (5, 5, TRUE);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_box_pack_start (GTK_BOX (main_vbox), table, FALSE, FALSE, 0);
gtk_widget_show (table);
for (y = 0; y < 5; y++)
{
for (x = 0; x < 5; x++)
{
GtkWidget *spin;
gchar prop_name[3] = { 0, };
prop_name[0] = "abcde"[x];
prop_name[1] = "12345"[y];
spin = gimp_prop_spin_button_new (config, prop_name,
1.0, 10.0, 2);
gtk_entry_set_width_chars (GTK_ENTRY (spin), 8);
gtk_table_attach (GTK_TABLE (table), spin,
x, x + 1, y, y + 1,
GTK_FILL | GTK_EXPAND, GTK_FILL | GTK_EXPAND,
0, 0);
gtk_widget_show (spin);
}
}
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE);
gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
scale = gimp_prop_widget_new (config, "divisor",
context, NULL, NULL, &label);
gtk_box_pack_start (GTK_BOX (hbox), scale, TRUE, TRUE, 0);
gtk_widget_show (scale);
scale = gimp_prop_widget_new (config, "offset",
context, NULL, NULL, &label);
gtk_box_pack_start (GTK_BOX (hbox), scale, TRUE, TRUE, 0);
gtk_widget_show (scale);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE);
gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
vbox = _gimp_prop_gui_new_generic (config,
param_specs + 27, 4,
context,
create_picker_func,
picker_creator);
gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
vbox = _gimp_prop_gui_new_generic (config,
param_specs + 31,
n_param_specs - 31,
context,
create_picker_func,
picker_creator);
gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
return main_vbox;
}
GtkWidget *
_gimp_prop_gui_new_channel_mixer (GObject *config,
GParamSpec **param_specs,
guint n_param_specs,
GimpContext *context,
GimpCreatePickerFunc create_picker_func,
gpointer picker_creator)
{
GtkWidget *main_vbox;
GtkWidget *frame;
GtkWidget *vbox;
GtkWidget *checkbox;
GtkWidget *scale;
const gchar *label;
g_return_val_if_fail (G_IS_OBJECT (config), NULL);
g_return_val_if_fail (param_specs != NULL, NULL);
g_return_val_if_fail (n_param_specs > 0, NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 4);
frame = gimp_frame_new (_("Red channel"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
scale = gimp_prop_widget_new (config, "rr-gain",
context, NULL, NULL, &label);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
scale = gimp_prop_widget_new (config, "rg-gain",
context, NULL, NULL, &label);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
scale = gimp_prop_widget_new (config, "rb-gain",
context, NULL, NULL, &label);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
frame = gimp_frame_new (_("Green channel"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
scale = gimp_prop_widget_new (config, "gr-gain",
context, NULL, NULL, &label);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
scale = gimp_prop_widget_new (config, "gg-gain",
context, NULL, NULL, &label);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
scale = gimp_prop_widget_new (config, "gb-gain",
context, NULL, NULL, &label);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
frame = gimp_frame_new (_("Blue channel"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
scale = gimp_prop_widget_new (config, "br-gain",
context, NULL, NULL, &label);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
scale = gimp_prop_widget_new (config, "bg-gain",
context, NULL, NULL, &label);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
scale = gimp_prop_widget_new (config, "bb-gain",
context, NULL, NULL, &label);
gtk_box_pack_start (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
gtk_widget_show (scale);
checkbox = gimp_prop_widget_new (config, "preserve-luminosity",
context, NULL, NULL, &label);
gtk_box_pack_start (GTK_BOX (main_vbox), checkbox, FALSE, FALSE, 0);
gtk_widget_show (checkbox);
return main_vbox;
}
GtkWidget *
_gimp_prop_gui_new_diffraction_patterns (GObject *config,
GParamSpec **param_specs,
guint n_param_specs,
GimpContext *context,
GimpCreatePickerFunc create_picker_func,
gpointer picker_creator)
{
GtkWidget *notebook;
GtkWidget *vbox;
g_return_val_if_fail (G_IS_OBJECT (config), NULL);
g_return_val_if_fail (param_specs != NULL, NULL);
g_return_val_if_fail (n_param_specs > 0, NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
notebook = gtk_notebook_new ();
vbox = _gimp_prop_gui_new_generic (config,
param_specs + 0, 3,
context,
create_picker_func,
picker_creator);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 6);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), vbox,
gtk_label_new ("Frequencies"));
gtk_widget_show (vbox);
vbox = _gimp_prop_gui_new_generic (config,
param_specs + 3, 3,
context,
create_picker_func,
picker_creator);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 6);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), vbox,
gtk_label_new ("Contours"));
gtk_widget_show (vbox);
vbox = _gimp_prop_gui_new_generic (config,
param_specs + 6, 3,
context,
create_picker_func,
picker_creator);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 6);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), vbox,
gtk_label_new ("Sharp Edges"));
gtk_widget_show (vbox);
vbox = _gimp_prop_gui_new_generic (config,
param_specs + 9, 3,
context,
create_picker_func,
picker_creator);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 6);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), vbox,
gtk_label_new ("Other Options"));
gtk_widget_show (vbox);
return notebook;
}
/* private functions */
static void
gimp_prop_gui_chain_toggled (GimpChainButton *chain,
GtkAdjustment *x_adj)
{
GtkAdjustment *y_adj;
y_adj = g_object_get_data (G_OBJECT (x_adj), "y-adjustment");
if (gimp_chain_button_get_active (chain))
{
GBinding *binding;
binding = g_object_bind_property (x_adj, "value",
y_adj, "value",
G_BINDING_BIDIRECTIONAL);
g_object_set_data (G_OBJECT (chain), "binding", binding);
}
else
{
GBinding *binding;
binding = g_object_get_data (G_OBJECT (chain), "binding");
g_object_unref (binding);
g_object_set_data (G_OBJECT (chain), "binding", NULL);
}
}