/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpcolorbutton.c
* Copyright (C) 1999-2001 Sven Neumann
*
* This library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* .
*/
#include "config.h"
#include
#include
#include "libgimpcolor/gimpcolor.h"
#include "gimpwidgetstypes.h"
#include "gimpcolorarea.h"
#include "gimpcolorbutton.h"
#include "gimpcolornotebook.h"
#include "gimpcolorselection.h"
#include "gimpdialog.h"
#include "gimphelpui.h"
#include "gimpstock.h"
#include "gimpwidgets-private.h"
#include "gimp3migration.h"
#include "libgimp/libgimp-intl.h"
/**
* SECTION: gimpcolorbutton
* @title: GimpColorButton
* @short_description: Widget for selecting a color from a simple button.
* @see_also: #libgimpcolor-gimpcolorspace
*
* This widget provides a simple button with a preview showing the
* color.
*
* On click a color selection dialog is opened. Additionally the
* button supports Drag and Drop and has a right-click menu that
* allows to choose the color from the current FG or BG color. If the
* user changes the color, the "color-changed" signal is emitted.
**/
#define COLOR_SELECTION_KEY "gimp-color-selection"
#define RESPONSE_RESET 1
#define TODOUBLE(i) (i / 65535.0)
#define TOUINT16(d) ((guint16) (d * 65535 + 0.5))
#define GIMP_COLOR_BUTTON_COLOR_FG "color-button-use-foreground"
#define GIMP_COLOR_BUTTON_COLOR_BG "color-button-use-background"
#define GIMP_COLOR_BUTTON_COLOR_BLACK "color-button-use-black"
#define GIMP_COLOR_BUTTON_COLOR_WHITE "color-button-use-white"
enum
{
COLOR_CHANGED,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_TITLE,
PROP_COLOR,
PROP_TYPE,
PROP_UPDATE,
PROP_AREA_WIDTH,
PROP_AREA_HEIGHT
};
static void gimp_color_button_class_init (GimpColorButtonClass *klass);
static void gimp_color_button_init (GimpColorButton *button,
GimpColorButtonClass *klass);
static void gimp_color_button_finalize (GObject *object);
static void gimp_color_button_dispose (GObject *object);
static void gimp_color_button_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gimp_color_button_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static gboolean gimp_color_button_button_press (GtkWidget *widget,
GdkEventButton *bevent);
static void gimp_color_button_state_changed (GtkWidget *widget,
GtkStateType prev_state);
static void gimp_color_button_clicked (GtkButton *button);
static GType gimp_color_button_get_action_type (GimpColorButton *button);
static void gimp_color_button_dialog_response (GtkWidget *dialog,
gint response_id,
GimpColorButton *button);
static void gimp_color_button_use_color (GtkAction *action,
GimpColorButton *button);
static void gimp_color_button_area_changed (GtkWidget *color_area,
GimpColorButton *button);
static void gimp_color_button_selection_changed (GtkWidget *selection,
GimpColorButton *button);
static void gimp_color_button_help_func (const gchar *help_id,
gpointer help_data);
static const GtkActionEntry actions[] =
{
{ "color-button-popup", NULL,
"Color Button Menu", NULL, NULL,
NULL
},
{ GIMP_COLOR_BUTTON_COLOR_FG, NULL,
N_("_Foreground Color"), NULL, NULL,
G_CALLBACK (gimp_color_button_use_color)
},
{ GIMP_COLOR_BUTTON_COLOR_BG, NULL,
N_("_Background Color"), NULL, NULL,
G_CALLBACK (gimp_color_button_use_color)
},
{ GIMP_COLOR_BUTTON_COLOR_BLACK, NULL,
N_("Blac_k"), NULL, NULL,
G_CALLBACK (gimp_color_button_use_color)
},
{ GIMP_COLOR_BUTTON_COLOR_WHITE, NULL,
N_("_White"), NULL, NULL,
G_CALLBACK (gimp_color_button_use_color)
}
};
static guint gimp_color_button_signals[LAST_SIGNAL] = { 0 };
static GimpButtonClass * parent_class = NULL;
GType
gimp_color_button_get_type (void)
{
static GType button_type = 0;
if (! button_type)
{
const GTypeInfo button_info =
{
sizeof (GimpColorButtonClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_color_button_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpColorButton),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_color_button_init,
};
button_type = g_type_register_static (GIMP_TYPE_BUTTON,
"GimpColorButton",
&button_info, 0);
}
return button_type;
}
static void
gimp_color_button_class_init (GimpColorButtonClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GtkButtonClass *button_class = GTK_BUTTON_CLASS (klass);
GimpRGB color;
parent_class = g_type_class_peek_parent (klass);
gimp_color_button_signals[COLOR_CHANGED] =
g_signal_new ("color-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpColorButtonClass, color_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
object_class->finalize = gimp_color_button_finalize;
object_class->dispose = gimp_color_button_dispose;
object_class->get_property = gimp_color_button_get_property;
object_class->set_property = gimp_color_button_set_property;
widget_class->button_press_event = gimp_color_button_button_press;
widget_class->state_changed = gimp_color_button_state_changed;
button_class->clicked = gimp_color_button_clicked;
klass->color_changed = NULL;
klass->get_action_type = gimp_color_button_get_action_type;
gimp_rgba_set (&color, 0.0, 0.0, 0.0, 1.0);
/**
* GimpColorButton:title:
*
* The title to be used for the color selection dialog.
*
* Since: GIMP 2.4
*/
g_object_class_install_property (object_class, PROP_TITLE,
g_param_spec_string ("title", NULL, NULL,
NULL,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
/**
* GimpColorButton:color:
*
* The color displayed in the button's color area.
*
* Since: GIMP 2.4
*/
g_object_class_install_property (object_class, PROP_COLOR,
gimp_param_spec_rgb ("color", NULL, NULL,
TRUE, &color,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
/**
* GimpColorButton:type:
*
* The type of the button's color area.
*
* Since: GIMP 2.4
*/
g_object_class_install_property (object_class, PROP_TYPE,
g_param_spec_enum ("type", NULL, NULL,
GIMP_TYPE_COLOR_AREA_TYPE,
GIMP_COLOR_AREA_FLAT,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
/**
* GimpColorButton:continuous-update:
*
* The update policy of the color button.
*
* Since: GIMP 2.4
*/
g_object_class_install_property (object_class, PROP_UPDATE,
g_param_spec_boolean ("continuous-update",
NULL, NULL,
FALSE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
/**
* GimpColorButton:area-width:
*
* The minimum width of the button's #GimpColorArea.
*
* Since: GIMP 2.8
*/
g_object_class_install_property (object_class, PROP_AREA_WIDTH,
g_param_spec_int ("area-width",
NULL, NULL,
1, G_MAXINT, 16,
G_PARAM_WRITABLE |
G_PARAM_CONSTRUCT));
/**
* GimpColorButton:area-height:
*
* The minimum height of the button's #GimpColorArea.
*
* Since: GIMP 2.8
*/
g_object_class_install_property (object_class, PROP_AREA_HEIGHT,
g_param_spec_int ("area-height",
NULL, NULL,
1, G_MAXINT, 16,
G_PARAM_WRITABLE |
G_PARAM_CONSTRUCT));
}
static void
gimp_color_button_init (GimpColorButton *button,
GimpColorButtonClass *klass)
{
GtkActionGroup *group;
GtkUIManager *ui_manager;
gint i;
button->title = NULL;
button->dialog = NULL;
button->color_area = g_object_new (GIMP_TYPE_COLOR_AREA,
"drag-mask", GDK_BUTTON1_MASK,
NULL);
g_signal_connect (button->color_area, "color-changed",
G_CALLBACK (gimp_color_button_area_changed),
button);
gtk_container_add (GTK_CONTAINER (button), button->color_area);
gtk_widget_show (button->color_area);
/* right-click opens a popup */
button->popup_menu = ui_manager = gtk_ui_manager_new ();
group = gtk_action_group_new ("color-button");
for (i = 0; i < G_N_ELEMENTS (actions); i++)
{
const gchar *label = gettext (actions[i].label);
const gchar *tooltip = gettext (actions[i].tooltip);
GtkAction *action;
action = g_object_new (klass->get_action_type (button),
"name", actions[i].name,
"label", label,
"tooltip", tooltip,
"stock-id", actions[i].stock_id,
NULL);
if (actions[i].callback)
g_signal_connect (action, "activate",
actions[i].callback,
button);
gtk_action_group_add_action_with_accel (group, action,
actions[i].accelerator);
g_object_unref (action);
}
gtk_ui_manager_insert_action_group (ui_manager, group, -1);
g_object_unref (group);
gtk_ui_manager_add_ui_from_string
(ui_manager,
"\n"
" \n"
" \n"
" \n"
" \n"
" \n"
" \n"
" \n"
"\n",
-1, NULL);
}
static void
gimp_color_button_finalize (GObject *object)
{
GimpColorButton *button = GIMP_COLOR_BUTTON (object);
if (button->title)
{
g_free (button->title);
button->title = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_color_button_dispose (GObject *object)
{
GimpColorButton *button = GIMP_COLOR_BUTTON (object);
if (button->dialog)
{
gtk_widget_destroy (button->dialog);
button->dialog = NULL;
}
if (button->color_area)
{
gtk_widget_destroy (button->color_area);
button->color_area = NULL;
}
if (button->popup_menu)
{
g_object_unref (button->popup_menu);
button->popup_menu = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_color_button_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpColorButton *button = GIMP_COLOR_BUTTON (object);
switch (property_id)
{
case PROP_TITLE:
g_value_set_string (value, button->title);
break;
case PROP_COLOR:
g_object_get_property (G_OBJECT (button->color_area), "color", value);
break;
case PROP_TYPE:
g_object_get_property (G_OBJECT (button->color_area), "type", value);
break;
case PROP_UPDATE:
g_value_set_boolean (value, button->continuous_update);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_color_button_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpColorButton *button = GIMP_COLOR_BUTTON (object);
gint other;
switch (property_id)
{
case PROP_TITLE:
g_free (button->title);
button->title = g_value_dup_string (value);
break;
case PROP_COLOR:
g_object_set_property (G_OBJECT (button->color_area), "color", value);
break;
case PROP_TYPE:
g_object_set_property (G_OBJECT (button->color_area), "type", value);
break;
case PROP_UPDATE:
gimp_color_button_set_update (button, g_value_get_boolean (value));
break;
case PROP_AREA_WIDTH:
gtk_widget_get_size_request (button->color_area, NULL, &other);
gtk_widget_set_size_request (button->color_area,
g_value_get_int (value), other);
break;
case PROP_AREA_HEIGHT:
gtk_widget_get_size_request (button->color_area, &other, NULL);
gtk_widget_set_size_request (button->color_area,
other, g_value_get_int (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gboolean
gimp_color_button_button_press (GtkWidget *widget,
GdkEventButton *bevent)
{
GimpColorButton *button = GIMP_COLOR_BUTTON (widget);
if (gdk_event_triggers_context_menu ((GdkEvent *) bevent))
{
GtkWidget *menu = gtk_ui_manager_get_widget (button->popup_menu,
"/color-button-popup");
gtk_menu_set_screen (GTK_MENU (menu), gtk_widget_get_screen (widget));
gtk_menu_popup (GTK_MENU (menu),
NULL, NULL, NULL, NULL,
bevent->button, bevent->time);
}
if (GTK_WIDGET_CLASS (parent_class)->button_press_event)
return GTK_WIDGET_CLASS (parent_class)->button_press_event (widget, bevent);
return FALSE;
}
static void
gimp_color_button_state_changed (GtkWidget *widget,
GtkStateType prev_state)
{
g_return_if_fail (GIMP_IS_COLOR_BUTTON (widget));
if (! gtk_widget_is_sensitive (widget) && GIMP_COLOR_BUTTON (widget)->dialog)
gtk_widget_hide (GIMP_COLOR_BUTTON (widget)->dialog);
if (GTK_WIDGET_CLASS (parent_class)->state_changed)
GTK_WIDGET_CLASS (parent_class)->state_changed (widget, prev_state);
}
static void
gimp_color_button_clicked (GtkButton *button)
{
GimpColorButton *color_button = GIMP_COLOR_BUTTON (button);
if (! color_button->dialog)
{
GtkWidget *dialog;
GtkWidget *selection;
GimpRGB color;
gimp_color_button_get_color (color_button, &color);
dialog = color_button->dialog =
gimp_dialog_new (color_button->title, COLOR_SELECTION_KEY,
gtk_widget_get_toplevel (GTK_WIDGET (button)), 0,
gimp_color_button_help_func, NULL,
GIMP_STOCK_RESET, RESPONSE_RESET,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OK, GTK_RESPONSE_OK,
NULL);
gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
RESPONSE_RESET,
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
g_signal_connect (dialog, "response",
G_CALLBACK (gimp_color_button_dialog_response),
color_button);
g_signal_connect (dialog, "destroy",
G_CALLBACK (gtk_widget_destroyed),
&color_button->dialog);
selection = gimp_color_selection_new ();
gtk_container_set_border_width (GTK_CONTAINER (selection), 6);
gimp_color_selection_set_show_alpha (GIMP_COLOR_SELECTION (selection),
gimp_color_button_has_alpha (color_button));
gimp_color_selection_set_color (GIMP_COLOR_SELECTION (selection), &color);
gimp_color_selection_set_old_color (GIMP_COLOR_SELECTION (selection),
&color);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
selection, TRUE, TRUE, 0);
gtk_widget_show (selection);
g_signal_connect (selection, "color-changed",
G_CALLBACK (gimp_color_button_selection_changed),
button);
g_object_set_data (G_OBJECT (color_button->dialog), COLOR_SELECTION_KEY,
selection);
}
gtk_window_present (GTK_WINDOW (color_button->dialog));
}
static GType
gimp_color_button_get_action_type (GimpColorButton *button)
{
return GTK_TYPE_ACTION;
}
/* public functions */
/**
* gimp_color_button_new:
* @title: String that will be used as title for the color_selector.
* @width: Width of the colorpreview in pixels.
* @height: Height of the colorpreview in pixels.
* @color: A pointer to a #GimpRGB color.
* @type: The type of transparency to be displayed.
*
* Creates a new #GimpColorButton widget.
*
* This returns a button with a preview showing the color.
* When the button is clicked a GtkColorSelectionDialog is opened.
* If the user changes the color the new color is written into the
* array that was used to pass the initial color and the "color-changed"
* signal is emitted.
*
* Returns: Pointer to the new #GimpColorButton widget.
**/
GtkWidget *
gimp_color_button_new (const gchar *title,
gint width,
gint height,
const GimpRGB *color,
GimpColorAreaType type)
{
g_return_val_if_fail (color != NULL, NULL);
g_return_val_if_fail (width > 0, NULL);
g_return_val_if_fail (height > 0, NULL);
return g_object_new (GIMP_TYPE_COLOR_BUTTON,
"title", title,
"type", type,
"color", color,
"area-width", width,
"area-height", height,
NULL);
}
/**
* gimp_color_button_set_color:
* @button: Pointer to a #GimpColorButton.
* @color: Pointer to the new #GimpRGB color.
*
* Sets the @button to the given @color.
**/
void
gimp_color_button_set_color (GimpColorButton *button,
const GimpRGB *color)
{
g_return_if_fail (GIMP_IS_COLOR_BUTTON (button));
g_return_if_fail (color != NULL);
gimp_color_area_set_color (GIMP_COLOR_AREA (button->color_area), color);
g_object_notify (G_OBJECT (button), "color");
}
/**
* gimp_color_button_get_color:
* @button: Pointer to a #GimpColorButton.
* @color: Pointer to a #GimpRGB struct used to return the color.
*
* Retrieves the currently set color from the @button.
**/
void
gimp_color_button_get_color (GimpColorButton *button,
GimpRGB *color)
{
g_return_if_fail (GIMP_IS_COLOR_BUTTON (button));
g_return_if_fail (color != NULL);
gimp_color_area_get_color (GIMP_COLOR_AREA (button->color_area), color);
}
/**
* gimp_color_button_has_alpha:
* @button: Pointer to a #GimpColorButton.
*
* Checks whether the @buttons shows transparency information.
*
* Returns: %TRUE if the @button shows transparency information, %FALSE
* otherwise.
**/
gboolean
gimp_color_button_has_alpha (GimpColorButton *button)
{
g_return_val_if_fail (GIMP_IS_COLOR_BUTTON (button), FALSE);
return gimp_color_area_has_alpha (GIMP_COLOR_AREA (button->color_area));
}
/**
* gimp_color_button_set_type:
* @button: Pointer to a #GimpColorButton.
* @type: the new #GimpColorAreaType
*
* Sets the @button to the given @type. See also gimp_color_area_set_type().
**/
void
gimp_color_button_set_type (GimpColorButton *button,
GimpColorAreaType type)
{
g_return_if_fail (GIMP_IS_COLOR_BUTTON (button));
gimp_color_area_set_type (GIMP_COLOR_AREA (button->color_area), type);
g_object_notify (G_OBJECT (button), "type");
}
/**
* gimp_color_button_get_update:
* @button: A #GimpColorButton widget.
*
* Returns the color button's @continuous_update property.
*
* Return value: the @continuous_update property.
**/
gboolean
gimp_color_button_get_update (GimpColorButton *button)
{
g_return_val_if_fail (GIMP_IS_COLOR_BUTTON (button), FALSE);
return button->continuous_update;
}
/**
* gimp_color_button_set_update:
* @button: A #GimpColorButton widget.
* @continuous: The new setting of the @continuous_update property.
*
* When set to #TRUE, the @button will emit the "color-changed"
* continuously while the color is changed in the color selection
* dialog.
**/
void
gimp_color_button_set_update (GimpColorButton *button,
gboolean continuous)
{
g_return_if_fail (GIMP_IS_COLOR_BUTTON (button));
if (continuous != button->continuous_update)
{
button->continuous_update = continuous ? TRUE : FALSE;
if (button->dialog)
{
GimpColorSelection *selection;
GimpRGB color;
selection = g_object_get_data (G_OBJECT (button->dialog),
COLOR_SELECTION_KEY);
if (button->continuous_update)
{
gimp_color_selection_get_color (selection, &color);
gimp_color_button_set_color (button, &color);
}
else
{
gimp_color_selection_get_old_color (selection, &color);
gimp_color_button_set_color (button, &color);
}
}
g_object_notify (G_OBJECT (button), "continuous-update");
}
}
/* private functions */
static void
gimp_color_button_dialog_response (GtkWidget *dialog,
gint response_id,
GimpColorButton *button)
{
GtkWidget *selection;
GimpRGB color;
selection = g_object_get_data (G_OBJECT (dialog), COLOR_SELECTION_KEY);
switch (response_id)
{
case RESPONSE_RESET:
gimp_color_selection_reset (GIMP_COLOR_SELECTION (selection));
break;
case GTK_RESPONSE_OK:
if (! button->continuous_update)
{
gimp_color_selection_get_color (GIMP_COLOR_SELECTION (selection),
&color);
gimp_color_button_set_color (button, &color);
}
gtk_widget_hide (dialog);
break;
default:
if (button->continuous_update)
{
gimp_color_selection_get_old_color (GIMP_COLOR_SELECTION (selection),
&color);
gimp_color_button_set_color (button, &color);
}
gtk_widget_hide (dialog);
break;
}
}
static void
gimp_color_button_use_color (GtkAction *action,
GimpColorButton *button)
{
const gchar *name;
GimpRGB color;
name = gtk_action_get_name (action);
gimp_color_button_get_color (button, &color);
if (! strcmp (name, GIMP_COLOR_BUTTON_COLOR_FG))
{
if (_gimp_get_foreground_func)
_gimp_get_foreground_func (&color);
else
gimp_rgba_set (&color, 0.0, 0.0, 0.0, 1.0);
}
else if (! strcmp (name, GIMP_COLOR_BUTTON_COLOR_BG))
{
if (_gimp_get_background_func)
_gimp_get_background_func (&color);
else
gimp_rgba_set (&color, 1.0, 1.0, 1.0, 1.0);
}
else if (! strcmp (name, GIMP_COLOR_BUTTON_COLOR_BLACK))
{
gimp_rgba_set (&color, 0.0, 0.0, 0.0, 1.0);
}
else if (! strcmp (name, GIMP_COLOR_BUTTON_COLOR_WHITE))
{
gimp_rgba_set (&color, 1.0, 1.0, 1.0, 1.0);
}
gimp_color_button_set_color (button, &color);
}
static void
gimp_color_button_area_changed (GtkWidget *color_area,
GimpColorButton *button)
{
if (button->dialog)
{
GimpColorSelection *selection;
GimpRGB color;
selection = g_object_get_data (G_OBJECT (button->dialog),
COLOR_SELECTION_KEY);
gimp_color_button_get_color (button, &color);
g_signal_handlers_block_by_func (selection,
gimp_color_button_selection_changed,
button);
gimp_color_selection_set_color (selection, &color);
g_signal_handlers_unblock_by_func (selection,
gimp_color_button_selection_changed,
button);
}
g_signal_emit (button, gimp_color_button_signals[COLOR_CHANGED], 0);
}
static void
gimp_color_button_selection_changed (GtkWidget *selection,
GimpColorButton *button)
{
if (button->continuous_update)
{
GimpRGB color;
gimp_color_selection_get_color (GIMP_COLOR_SELECTION (selection), &color);
g_signal_handlers_block_by_func (button->color_area,
gimp_color_button_area_changed,
button);
gimp_color_area_set_color (GIMP_COLOR_AREA (button->color_area), &color);
g_signal_handlers_unblock_by_func (button->color_area,
gimp_color_button_area_changed,
button);
g_signal_emit (button, gimp_color_button_signals[COLOR_CHANGED], 0);
}
}
static void
gimp_color_button_help_func (const gchar *help_id,
gpointer help_data)
{
GimpColorSelection *selection;
GimpColorNotebook *notebook;
selection = g_object_get_data (G_OBJECT (help_data), COLOR_SELECTION_KEY);
notebook = GIMP_COLOR_NOTEBOOK (selection->notebook);
help_id = GIMP_COLOR_SELECTOR_GET_CLASS (notebook->cur_page)->help_id;
gimp_standard_help_func (help_id, NULL);
}