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gtk2/gtk/gtkcontainer.c
CST 1999 Shawn T. Amundson 279e878bdd Added notice to look in AUTHORS and ChangeLog files for a list of changes. 
Wed Feb 24 01:22:39 CST 1999 Shawn T. Amundson <amundson@gtk.org>

        * *.[ch]: Added notice to look in AUTHORS and ChangeLog files
	  for a list of changes.
1999-02-24 07:37:18 +00:00

1851 lines
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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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 Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <string.h>
#include "gtkcontainer.h"
#include "gtkprivate.h"
#include "gtksignal.h"
#include "gtkmain.h"
#include <stdarg.h>
enum {
ADD,
REMOVE,
CHECK_RESIZE,
FOCUS,
SET_FOCUS_CHILD,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_BORDER_WIDTH,
ARG_RESIZE_MODE,
ARG_CHILD
};
typedef struct _GtkChildArgInfo GtkChildArgInfo;
struct _GtkChildArgInfo
{
gchar *name;
GtkType type;
GtkType class_type;
guint arg_flags;
guint arg_id;
guint seq_id;
};
/* The global list of toplevel windows */
static GList *toplevel_list = NULL;
static void gtk_container_base_class_init (GtkContainerClass *klass);
static void gtk_container_class_init (GtkContainerClass *klass);
static void gtk_container_init (GtkContainer *container);
static void gtk_container_destroy (GtkObject *object);
static void gtk_container_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_container_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_container_add_unimplemented (GtkContainer *container,
GtkWidget *widget);
static void gtk_container_remove_unimplemented (GtkContainer *container,
GtkWidget *widget);
static void gtk_container_real_check_resize (GtkContainer *container);
static gint gtk_container_real_focus (GtkContainer *container,
GtkDirectionType direction);
static void gtk_container_real_set_focus_child (GtkContainer *container,
GtkWidget *widget);
static gint gtk_container_focus_tab (GtkContainer *container,
GList *children,
GtkDirectionType direction);
static gint gtk_container_focus_up_down (GtkContainer *container,
GList *children,
GtkDirectionType direction);
static gint gtk_container_focus_left_right (GtkContainer *container,
GList *children,
GtkDirectionType direction);
static gint gtk_container_focus_move (GtkContainer *container,
GList *children,
GtkDirectionType direction);
static void gtk_container_children_callback (GtkWidget *widget,
gpointer client_data);
static void gtk_container_show_all (GtkWidget *widget);
static void gtk_container_hide_all (GtkWidget *widget);
static gchar* gtk_container_child_default_composite_name (GtkContainer *container,
GtkWidget *child);
static guint container_signals[LAST_SIGNAL] = { 0 };
static GHashTable *container_child_arg_info_ht = NULL;
static GtkWidgetClass *parent_class = NULL;
static const gchar *vadjustment_key = "gtk-vadjustment";
static guint vadjustment_key_id = 0;
static const gchar *hadjustment_key = "gtk-hadjustment";
static guint hadjustment_key_id = 0;
static GSList *container_resize_queue = NULL;
GtkType
gtk_container_get_type (void)
{
static GtkType container_type = 0;
if (!container_type)
{
static const GtkTypeInfo container_info =
{
"GtkContainer",
sizeof (GtkContainer),
sizeof (GtkContainerClass),
(GtkClassInitFunc) gtk_container_class_init,
(GtkObjectInitFunc) gtk_container_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) gtk_container_base_class_init,
};
container_type = gtk_type_unique (gtk_widget_get_type (), &container_info);
}
return container_type;
}
static void
gtk_container_base_class_init (GtkContainerClass *class)
{
/* reset instance specifc class fields that don't get inherited */
class->n_child_args = 0;
class->set_child_arg = NULL;
class->get_child_arg = NULL;
}
static void
gtk_container_class_init (GtkContainerClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
parent_class = gtk_type_class (gtk_widget_get_type ());
container_child_arg_info_ht = g_hash_table_new (gtk_arg_info_hash,
gtk_arg_info_equal);
vadjustment_key_id = g_quark_from_static_string (vadjustment_key);
hadjustment_key_id = g_quark_from_static_string (hadjustment_key);
gtk_object_add_arg_type ("GtkContainer::border_width", GTK_TYPE_ULONG, GTK_ARG_READWRITE, ARG_BORDER_WIDTH);
gtk_object_add_arg_type ("GtkContainer::resize_mode", GTK_TYPE_RESIZE_MODE, GTK_ARG_READWRITE, ARG_RESIZE_MODE);
gtk_object_add_arg_type ("GtkContainer::child", GTK_TYPE_WIDGET, GTK_ARG_WRITABLE, ARG_CHILD);
container_signals[ADD] =
gtk_signal_new ("add",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkContainerClass, add),
gtk_marshal_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_WIDGET);
container_signals[REMOVE] =
gtk_signal_new ("remove",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkContainerClass, remove),
gtk_marshal_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_WIDGET);
container_signals[CHECK_RESIZE] =
gtk_signal_new ("check_resize",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkContainerClass, check_resize),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
container_signals[FOCUS] =
gtk_signal_new ("focus",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkContainerClass, focus),
gtk_marshal_ENUM__ENUM,
GTK_TYPE_DIRECTION_TYPE, 1,
GTK_TYPE_DIRECTION_TYPE);
container_signals[SET_FOCUS_CHILD] =
gtk_signal_new ("set-focus-child",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkContainerClass, set_focus_child),
gtk_marshal_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_WIDGET);
gtk_object_class_add_signals (object_class, container_signals, LAST_SIGNAL);
object_class->get_arg = gtk_container_get_arg;
object_class->set_arg = gtk_container_set_arg;
object_class->destroy = gtk_container_destroy;
widget_class->show_all = gtk_container_show_all;
widget_class->hide_all = gtk_container_hide_all;
class->add = gtk_container_add_unimplemented;
class->remove = gtk_container_remove_unimplemented;
class->check_resize = gtk_container_real_check_resize;
class->forall = NULL;
class->focus = gtk_container_real_focus;
class->set_focus_child = gtk_container_real_set_focus_child;
class->child_type = NULL;
class->composite_name = gtk_container_child_default_composite_name;
}
GtkType
gtk_container_child_type (GtkContainer *container)
{
GtkType slot;
GtkContainerClass *class;
g_return_val_if_fail (container != NULL, 0);
g_return_val_if_fail (GTK_IS_CONTAINER (container), 0);
class = GTK_CONTAINER_CLASS (GTK_OBJECT (container)->klass);
if (class->child_type)
slot = class->child_type (container);
else
slot = GTK_TYPE_NONE;
return slot;
}
/****************************************************
* GtkContainer child argument mechanism
*
****************************************************/
void
gtk_container_add_with_args (GtkContainer *container,
GtkWidget *widget,
const gchar *first_arg_name,
...)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (widget->parent == NULL);
gtk_widget_ref (GTK_WIDGET (container));
gtk_widget_ref (widget);
gtk_signal_emit (GTK_OBJECT (container), container_signals[ADD], widget);
if (widget->parent)
{
va_list var_args;
GSList *arg_list = NULL;
GSList *info_list = NULL;
gchar *error;
va_start (var_args, first_arg_name);
error = gtk_container_child_args_collect (GTK_OBJECT_TYPE (container),
&arg_list,
&info_list,
first_arg_name,
var_args);
va_end (var_args);
if (error)
{
g_warning ("gtk_container_add_with_args(): %s", error);
g_free (error);
}
else
{
GSList *slist_arg;
GSList *slist_info;
slist_arg = arg_list;
slist_info = info_list;
while (slist_arg)
{
gtk_container_arg_set (container, widget, slist_arg->data, slist_info->data);
slist_arg = slist_arg->next;
slist_info = slist_info->next;
}
gtk_args_collect_cleanup (arg_list, info_list);
}
}
gtk_widget_unref (widget);
gtk_widget_unref (GTK_WIDGET (container));
}
void
gtk_container_addv (GtkContainer *container,
GtkWidget *widget,
guint n_args,
GtkArg *args)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (widget->parent == NULL);
gtk_widget_ref (GTK_WIDGET (container));
gtk_widget_ref (widget);
gtk_signal_emit (GTK_OBJECT (container), container_signals[ADD], widget);
if (widget->parent)
{
GtkArg *max_args;
for (max_args = args + n_args; args < max_args; args++)
gtk_container_arg_set (container, widget, args, NULL);
}
gtk_widget_unref (widget);
gtk_widget_unref (GTK_WIDGET (container));
}
void
gtk_container_child_setv (GtkContainer *container,
GtkWidget *child,
guint n_args,
GtkArg *args)
{
GtkArg *max_args;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (child != NULL);
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (child->parent != NULL);
if (n_args)
g_return_if_fail (args != NULL);
for (max_args = args + n_args; args < max_args; args++)
gtk_container_arg_set (container, child, args, NULL);
}
void
gtk_container_child_getv (GtkContainer *container,
GtkWidget *child,
guint n_args,
GtkArg *args)
{
GtkArg *max_args;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (child != NULL);
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (child->parent != NULL);
if (n_args)
g_return_if_fail (args != NULL);
for (max_args = args + n_args; args < max_args; args++)
gtk_container_arg_get (container, child, args, NULL);
}
void
gtk_container_child_set (GtkContainer *container,
GtkWidget *child,
const gchar *first_arg_name,
...)
{
va_list var_args;
GSList *arg_list = NULL;
GSList *info_list = NULL;
gchar *error;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (child != NULL);
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (child->parent != NULL);
va_start (var_args, first_arg_name);
error = gtk_container_child_args_collect (GTK_OBJECT_TYPE (container),
&arg_list,
&info_list,
first_arg_name,
var_args);
va_end (var_args);
if (error)
{
g_warning ("gtk_container_child_set(): %s", error);
g_free (error);
}
else
{
GSList *slist_arg;
GSList *slist_info;
slist_arg = arg_list;
slist_info = info_list;
while (slist_arg)
{
gtk_container_arg_set (container, child, slist_arg->data, slist_info->data);
slist_arg = slist_arg->next;
slist_info = slist_info->next;
}
gtk_args_collect_cleanup (arg_list, info_list);
}
}
void
gtk_container_arg_set (GtkContainer *container,
GtkWidget *child,
GtkArg *arg,
GtkArgInfo *info)
{
GtkContainerClass *class;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (child != NULL);
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (arg != NULL);
if (!info)
{
gchar *error;
error = gtk_arg_get_info (GTK_OBJECT_TYPE (container),
container_child_arg_info_ht,
arg->name,
&info);
if (error)
{
g_warning ("gtk_container_arg_set(): %s", error);
g_free (error);
return;
}
}
g_return_if_fail (info->arg_flags & GTK_ARG_CHILD_ARG);
if (! (info->arg_flags & GTK_ARG_WRITABLE))
{
g_warning ("gtk_container_arg_set(): argument \"%s\" is not writable",
info->full_name);
return;
}
if (info->type != arg->type)
{
g_warning ("gtk_container_arg_set(): argument \"%s\" has invalid type `%s'",
info->full_name,
gtk_type_name (arg->type));
return;
}
class = gtk_type_class (info->class_type);
g_assert (class->set_child_arg != NULL);
class->set_child_arg (container, child, arg, info->arg_id);
}
void
gtk_container_arg_get (GtkContainer *container,
GtkWidget *child,
GtkArg *arg,
GtkArgInfo *info)
{
GtkContainerClass *class;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (child != NULL);
g_return_if_fail (GTK_IS_WIDGET (child));
g_return_if_fail (arg != NULL);
if (!info)
{
gchar *error;
error = gtk_arg_get_info (GTK_OBJECT_TYPE (container),
container_child_arg_info_ht,
arg->name,
&info);
if (error)
{
g_warning ("gtk_container_arg_get(): %s", error);
g_free (error);
arg->type = GTK_TYPE_INVALID;
return;
}
}
g_return_if_fail (info->arg_flags & GTK_ARG_CHILD_ARG);
if (! (info->arg_flags & GTK_ARG_READABLE))
{
g_warning ("gtk_container_arg_get(): argument \"%s\" is not readable",
info->full_name);
arg->type = GTK_TYPE_INVALID;
return;
}
class = gtk_type_class (info->class_type);
g_assert (class->get_child_arg != NULL);
arg->type = info->type;
class->get_child_arg (container, child, arg, info->arg_id);
}
void
gtk_container_add_child_arg_type (const gchar *arg_name,
GtkType arg_type,
guint arg_flags,
guint arg_id)
{
g_return_if_fail (arg_name != NULL);
g_return_if_fail (arg_type > GTK_TYPE_NONE);
g_return_if_fail (arg_id > 0);
g_return_if_fail ((arg_flags & GTK_ARG_READWRITE) == GTK_ARG_READWRITE);
/* g_return_if_fail ((arg_flags & GTK_ARG_CHILD_ARG) != 0); */
arg_flags |= GTK_ARG_CHILD_ARG;
arg_flags &= GTK_ARG_MASK;
gtk_arg_type_new_static (GTK_TYPE_CONTAINER,
arg_name,
GTK_STRUCT_OFFSET (GtkContainerClass, n_child_args),
container_child_arg_info_ht,
arg_type,
arg_flags,
arg_id);
}
gchar*
gtk_container_child_args_collect (GtkType object_type,
GSList **arg_list_p,
GSList **info_list_p,
const gchar *first_arg_name,
va_list var_args)
{
return gtk_args_collect (object_type,
container_child_arg_info_ht,
arg_list_p,
info_list_p,
first_arg_name,
var_args);
}
gchar*
gtk_container_child_arg_get_info (GtkType object_type,
const gchar *arg_name,
GtkArgInfo **info_p)
{
return gtk_arg_get_info (object_type,
container_child_arg_info_ht,
arg_name,
info_p);
}
GtkArg*
gtk_container_query_child_args (GtkType class_type,
guint32 **arg_flags,
guint *n_args)
{
g_return_val_if_fail (n_args != NULL, NULL);
*n_args = 0;
g_return_val_if_fail (gtk_type_is_a (class_type, GTK_TYPE_CONTAINER), NULL);
return gtk_args_query (class_type, container_child_arg_info_ht, arg_flags, n_args);
}
static void
gtk_container_add_unimplemented (GtkContainer *container,
GtkWidget *widget)
{
g_warning ("GtkContainerClass::add not implemented for `%s'", gtk_type_name (GTK_OBJECT_TYPE (container)));
}
static void
gtk_container_remove_unimplemented (GtkContainer *container,
GtkWidget *widget)
{
g_warning ("GtkContainerClass::remove not implemented for `%s'", gtk_type_name (GTK_OBJECT_TYPE (container)));
}
static void
gtk_container_init (GtkContainer *container)
{
container->focus_child = NULL;
container->border_width = 0;
container->need_resize = FALSE;
container->resize_mode = GTK_RESIZE_PARENT;
container->resize_widgets = NULL;
}
static void
gtk_container_destroy (GtkObject *object)
{
GtkContainer *container;
g_return_if_fail (object != NULL);
g_return_if_fail (GTK_IS_CONTAINER (object));
container = GTK_CONTAINER (object);
if (GTK_CONTAINER_RESIZE_PENDING (container))
{
container_resize_queue = g_slist_remove (container_resize_queue, container);
GTK_PRIVATE_UNSET_FLAG (container, GTK_RESIZE_PENDING);
}
gtk_container_clear_resize_widgets (container);
gtk_container_foreach (container, (GtkCallback) gtk_widget_destroy, NULL);
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
gtk_container_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkContainer *container;
container = GTK_CONTAINER (object);
switch (arg_id)
{
case ARG_BORDER_WIDTH:
gtk_container_set_border_width (container, GTK_VALUE_ULONG (*arg));
break;
case ARG_RESIZE_MODE:
gtk_container_set_resize_mode (container, GTK_VALUE_ENUM (*arg));
break;
case ARG_CHILD:
gtk_container_add (container, GTK_WIDGET (GTK_VALUE_OBJECT (*arg)));
break;
default:
break;
}
}
static void
gtk_container_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkContainer *container;
container = GTK_CONTAINER (object);
switch (arg_id)
{
case ARG_BORDER_WIDTH:
GTK_VALUE_ULONG (*arg) = container->border_width;
break;
case ARG_RESIZE_MODE:
GTK_VALUE_ENUM (*arg) = container->resize_mode;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
void
gtk_container_set_border_width (GtkContainer *container,
guint border_width)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
if (container->border_width != border_width)
{
container->border_width = border_width;
if (GTK_WIDGET_REALIZED (container))
gtk_widget_queue_resize (GTK_WIDGET (container));
}
}
void
gtk_container_add (GtkContainer *container,
GtkWidget *widget)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (widget->parent == NULL);
gtk_signal_emit (GTK_OBJECT (container), container_signals[ADD], widget);
}
void
gtk_container_remove (GtkContainer *container,
GtkWidget *widget)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (widget));
g_return_if_fail (widget->parent == GTK_WIDGET (container));
gtk_signal_emit (GTK_OBJECT (container), container_signals[REMOVE], widget);
}
void
gtk_container_clear_resize_widgets (GtkContainer *container)
{
GSList *node;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
node = container->resize_widgets;
if (node)
gtk_signal_disconnect_by_func (GTK_OBJECT (container),
GTK_SIGNAL_FUNC (gtk_container_clear_resize_widgets),
NULL);
while (node)
{
GtkWidget *widget = node->data;
GTK_PRIVATE_UNSET_FLAG (widget, GTK_RESIZE_NEEDED);
node = node->next;
}
g_slist_free (container->resize_widgets);
container->resize_widgets = NULL;
}
void
gtk_container_set_resize_mode (GtkContainer *container,
GtkResizeMode resize_mode)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (resize_mode <= GTK_RESIZE_IMMEDIATE);
if (GTK_WIDGET_TOPLEVEL (container) &&
resize_mode == GTK_RESIZE_PARENT)
resize_mode = GTK_RESIZE_QUEUE;
if (container->resize_mode != resize_mode)
{
container->resize_mode = resize_mode;
if (resize_mode == GTK_RESIZE_IMMEDIATE)
gtk_container_check_resize (container);
else
{
gtk_container_clear_resize_widgets (container);
gtk_widget_queue_resize (GTK_WIDGET (container));
}
}
}
static GtkContainer*
gtk_container_get_resize_container (GtkContainer *container)
{
GtkWidget *widget;
widget = GTK_WIDGET (container);
while (widget->parent)
{
widget = widget->parent;
if (GTK_IS_RESIZE_CONTAINER (widget) && !GTK_WIDGET_RESIZE_NEEDED (widget))
break;
}
return GTK_IS_RESIZE_CONTAINER (widget) ? (GtkContainer*) widget : NULL;
}
static gboolean
gtk_container_idle_sizer (gpointer data)
{
GDK_THREADS_ENTER ();
/* we may be invoked with a container_resize_queue of NULL, because
* queue_resize could have been adding an extra idle function while
* the queue still got processed. we better just ignore such case
* than trying to explicitely work around them with some extra flags,
* since it doesn't cause any actual harm.
*/
while (container_resize_queue)
{
GSList *slist;
GtkWidget *widget;
slist = container_resize_queue;
container_resize_queue = slist->next;
widget = slist->data;
g_slist_free_1 (slist);
GTK_PRIVATE_UNSET_FLAG (widget, GTK_RESIZE_PENDING);
gtk_container_check_resize (GTK_CONTAINER (widget));
}
GDK_THREADS_LEAVE ();
return FALSE;
}
void
gtk_container_queue_resize (GtkContainer *container)
{
GtkContainer *resize_container;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
if (GTK_OBJECT_DESTROYED (container) ||
GTK_WIDGET_RESIZE_NEEDED (container))
return;
if (GTK_IS_RESIZE_CONTAINER (container))
gtk_container_clear_resize_widgets (container);
resize_container = gtk_container_get_resize_container (container);
if (resize_container)
{
if (GTK_WIDGET_VISIBLE (resize_container))
{
switch (resize_container->resize_mode)
{
case GTK_RESIZE_QUEUE:
if (!GTK_CONTAINER_RESIZE_PENDING (resize_container))
{
GTK_PRIVATE_SET_FLAG (resize_container, GTK_RESIZE_PENDING);
if (container_resize_queue == NULL)
gtk_idle_add_priority (GTK_PRIORITY_RESIZE,
gtk_container_idle_sizer,
NULL);
container_resize_queue = g_slist_prepend (container_resize_queue, resize_container);
}
GTK_PRIVATE_SET_FLAG (container, GTK_RESIZE_NEEDED);
if (!resize_container->resize_widgets)
gtk_signal_connect (GTK_OBJECT (resize_container),
"size_allocate",
GTK_SIGNAL_FUNC (gtk_container_clear_resize_widgets),
NULL);
resize_container->resize_widgets =
g_slist_prepend (resize_container->resize_widgets, container);
break;
case GTK_RESIZE_IMMEDIATE:
GTK_PRIVATE_SET_FLAG (container, GTK_RESIZE_NEEDED);
if (!resize_container->resize_widgets)
gtk_signal_connect (GTK_OBJECT (resize_container),
"size_allocate",
GTK_SIGNAL_FUNC (gtk_container_clear_resize_widgets),
NULL);
resize_container->resize_widgets =
g_slist_prepend (resize_container->resize_widgets, container);
gtk_container_check_resize (resize_container);
break;
case GTK_RESIZE_PARENT:
/* Ignore */
break;
}
}
else
{
/* We need to let hidden toplevels know that something
* changed while they where hidden. For other resize containers,
* they will get resized when they are shown.
*/
if (GTK_WIDGET_TOPLEVEL (resize_container))
gtk_container_check_resize (resize_container);
}
}
}
void
gtk_container_check_resize (GtkContainer *container)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
gtk_signal_emit (GTK_OBJECT (container), container_signals[CHECK_RESIZE]);
}
static void
gtk_container_real_check_resize (GtkContainer *container)
{
GtkWidget *widget;
GtkRequisition requisition;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
widget = GTK_WIDGET (container);
gtk_widget_size_request (widget, &requisition);
if (requisition.width > widget->allocation.width ||
requisition.height > widget->allocation.height)
{
if (GTK_IS_RESIZE_CONTAINER (container))
gtk_widget_size_allocate (GTK_WIDGET (container),
&GTK_WIDGET (container)->allocation);
else
gtk_widget_queue_resize (widget);
}
else
{
gtk_container_resize_children (container);
}
}
/* The container hasn't changed size but one of its children
* queued a resize request. Which means that the allocation
* is not sufficient for the requisition of some child.
* We've already performed a size request at this point,
* so we simply need to run through the list of resize
* widgets and reallocate their sizes appropriately. We
* make the optimization of not performing reallocation
* for a widget who also has a parent in the resize widgets
* list. GTK_RESIZE_NEEDED is used for flagging those
* parents inside this function.
*/
void
gtk_container_resize_children (GtkContainer *container)
{
GtkWidget *widget;
GtkWidget *resize_container;
GSList *resize_widgets;
GSList *resize_containers;
GSList *node;
/* resizing invariants:
* toplevels have *always* resize_mode != GTK_RESIZE_PARENT set.
* containers with resize_mode==GTK_RESIZE_PARENT have to have resize_widgets
* set to NULL.
* containers that are flagged RESIZE_NEEDED must have resize_widgets set to
* NULL, or are toplevels (thus have ->parent set to NULL).
* widgets that are in some container->resize_widgets list must be flagged with
* RESIZE_NEEDED.
* widgets that have RESIZE_NEEDED set must be referenced in some
* GTK_IS_RESIZE_CONTAINER (container)->resize_widgets list.
* containers that have an idle sizer pending must be flagged with
* RESIZE_PENDING.
*/
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
/* we first check out if we actually need to perform a resize,
* which is not the case if we got another container queued for
* a resize in our anchestry. also we can skip the whole
* resize_widgets checks if we are a toplevel and NEED_RESIZE.
* this code implies that our allocation is sufficient for our
* requisition, since otherwise we would NEED_RESIZE.
*/
resize_container = GTK_WIDGET (container);
while (resize_container)
{
if (GTK_WIDGET_RESIZE_NEEDED (resize_container))
break;
resize_container = resize_container->parent;
}
if (resize_container)
{
/* queue_resize and size_allocate both clear our
* resize_widgets list.
*/
if (resize_container->parent)
gtk_container_queue_resize (container);
else
gtk_widget_size_allocate (GTK_WIDGET (container),
&GTK_WIDGET (container)->allocation);
return;
}
resize_container = GTK_WIDGET (container);
/* we now walk the anchestry for all resize widgets as long
* as they are our children and as long as their allocation
* is insufficient, since we don't need to reallocate below that.
*/
resize_widgets = container->resize_widgets;
if (resize_widgets)
gtk_signal_disconnect_by_func (GTK_OBJECT (container),
GTK_SIGNAL_FUNC (gtk_container_clear_resize_widgets),
NULL);
container->resize_widgets = NULL;
for (node = resize_widgets; node; node = node->next)
{
widget = node->data;
GTK_PRIVATE_UNSET_FLAG (widget, GTK_RESIZE_NEEDED);
while (widget->parent != resize_container &&
((widget->allocation.width < widget->requisition.width) ||
(widget->allocation.height < widget->requisition.height)))
widget = widget->parent;
GTK_PRIVATE_SET_FLAG (widget, GTK_RESIZE_NEEDED);
node->data = widget;
}
/* for the newly setup resize_widgets list, we now walk each widget's
* anchestry to sort those widgets out that have RESIZE_NEEDED parents.
* we can safely stop the walk if we are the parent, since we checked
* our own anchestry already.
*/
resize_containers = NULL;
for (node = resize_widgets; node; node = node->next)
{
GtkWidget *parent;
widget = node->data;
if (!GTK_WIDGET_RESIZE_NEEDED (widget))
continue;
parent = widget->parent;
while (parent != resize_container)
{
if (GTK_WIDGET_RESIZE_NEEDED (parent))
{
GTK_PRIVATE_UNSET_FLAG (widget, GTK_RESIZE_NEEDED);
widget = parent;
}
parent = parent->parent;
}
if (!g_slist_find (resize_containers, widget))
{
resize_containers = g_slist_prepend (resize_containers, widget);
gtk_widget_ref (widget);
}
}
g_slist_free (resize_widgets);
for (node = resize_containers; node; node = node->next)
{
widget = node->data;
GTK_PRIVATE_UNSET_FLAG (widget, GTK_RESIZE_NEEDED);
gtk_widget_size_allocate (widget, &widget->allocation);
gtk_widget_unref (widget);
}
g_slist_free (resize_containers);
}
void
gtk_container_forall (GtkContainer *container,
GtkCallback callback,
gpointer callback_data)
{
GtkContainerClass *class;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (callback != NULL);
class = GTK_CONTAINER_CLASS (GTK_OBJECT (container)->klass);
if (class->forall)
class->forall (container, TRUE, callback, callback_data);
}
void
gtk_container_foreach (GtkContainer *container,
GtkCallback callback,
gpointer callback_data)
{
GtkContainerClass *class;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (callback != NULL);
class = GTK_CONTAINER_CLASS (GTK_OBJECT (container)->klass);
if (class->forall)
class->forall (container, FALSE, callback, callback_data);
}
typedef struct _GtkForeachData GtkForeachData;
struct _GtkForeachData
{
GtkObject *container;
GtkCallbackMarshal callback;
gpointer callback_data;
};
static void
gtk_container_foreach_unmarshal (GtkWidget *child,
gpointer data)
{
GtkForeachData *fdata = (GtkForeachData*) data;
GtkArg args[2];
/* first argument */
args[0].name = NULL;
args[0].type = GTK_OBJECT(child)->klass->type;
GTK_VALUE_OBJECT(args[0]) = GTK_OBJECT (child);
/* location for return value */
args[1].name = NULL;
args[1].type = GTK_TYPE_NONE;
fdata->callback (fdata->container, fdata->callback_data, 1, args);
}
void
gtk_container_foreach_full (GtkContainer *container,
GtkCallback callback,
GtkCallbackMarshal marshal,
gpointer callback_data,
GtkDestroyNotify notify)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
if (marshal)
{
GtkForeachData fdata;
fdata.container = GTK_OBJECT (container);
fdata.callback = marshal;
fdata.callback_data = callback_data;
gtk_container_foreach (container, gtk_container_foreach_unmarshal, &fdata);
}
else
{
g_return_if_fail (callback != NULL);
gtk_container_foreach (container, callback, &callback_data);
}
if (notify)
notify (callback_data);
}
gint
gtk_container_focus (GtkContainer *container,
GtkDirectionType direction)
{
gint return_val;
g_return_val_if_fail (container != NULL, FALSE);
g_return_val_if_fail (GTK_IS_CONTAINER (container), FALSE);
gtk_signal_emit (GTK_OBJECT (container),
container_signals[FOCUS],
direction, &return_val);
return return_val;
}
void
gtk_container_set_focus_child (GtkContainer *container,
GtkWidget *widget)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
if (widget)
g_return_if_fail (GTK_IS_WIDGET (widget));
gtk_signal_emit (GTK_OBJECT (container), container_signals[SET_FOCUS_CHILD], widget);
}
GList*
gtk_container_children (GtkContainer *container)
{
GList *children;
children = NULL;
gtk_container_foreach (container,
gtk_container_children_callback,
&children);
return g_list_reverse (children);
}
void
gtk_container_register_toplevel (GtkContainer *container)
{
g_return_if_fail (container != NULL);
toplevel_list = g_list_prepend (toplevel_list, container);
gtk_widget_ref (GTK_WIDGET (container));
gtk_object_sink (GTK_OBJECT (container));
}
void
gtk_container_unregister_toplevel (GtkContainer *container)
{
GList *node;
g_return_if_fail (container != NULL);
node = g_list_find (toplevel_list, container);
g_return_if_fail (node != NULL);
toplevel_list = g_list_remove_link (toplevel_list, node);
g_list_free_1 (node);
gtk_widget_unref (GTK_WIDGET (container));
}
GList*
gtk_container_get_toplevels (void)
{
/* XXX: fixme we should ref all these widgets and duplicate
* the list.
*/
return toplevel_list;
}
static void
gtk_container_child_position_callback (GtkWidget *widget,
gpointer client_data)
{
struct {
GtkWidget *child;
guint i;
guint index;
} *data = client_data;
data->i++;
if (data->child == widget)
data->index = data->i;
}
static gchar*
gtk_container_child_default_composite_name (GtkContainer *container,
GtkWidget *child)
{
struct {
GtkWidget *child;
guint i;
guint index;
} data;
gchar *name;
/* fallback implementation */
data.child = child;
data.i = 0;
data.index = 0;
gtk_container_forall (container,
gtk_container_child_position_callback,
&data);
name = g_strdup_printf ("%s-%u",
gtk_type_name (GTK_OBJECT_TYPE (child)),
data.index);
return name;
}
gchar*
gtk_container_child_composite_name (GtkContainer *container,
GtkWidget *child)
{
g_return_val_if_fail (container != NULL, NULL);
g_return_val_if_fail (GTK_IS_CONTAINER (container), NULL);
g_return_val_if_fail (child != NULL, NULL);
g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
g_return_val_if_fail (child->parent == GTK_WIDGET (container), NULL);
if (GTK_WIDGET_COMPOSITE_CHILD (child))
{
static GQuark quark_composite_name = 0;
gchar *name;
if (!quark_composite_name)
quark_composite_name = g_quark_from_static_string ("gtk-composite-name");
name = gtk_object_get_data_by_id (GTK_OBJECT (child), quark_composite_name);
if (!name)
{
GtkContainerClass *class;
class = GTK_CONTAINER_CLASS (GTK_OBJECT (container)->klass);
if (class->composite_name)
name = class->composite_name (container, child);
}
else
name = g_strdup (name);
return name;
}
return NULL;
}
void
gtk_container_real_set_focus_child (GtkContainer *container,
GtkWidget *child)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
if (child)
g_return_if_fail (GTK_IS_WIDGET (child));
if (child != container->focus_child)
{
if (container->focus_child)
gtk_widget_unref (container->focus_child);
container->focus_child = child;
if (container->focus_child)
gtk_widget_ref (container->focus_child);
}
/* check for h/v adjustments
*/
if (container->focus_child)
{
GtkAdjustment *adjustment;
adjustment = gtk_object_get_data_by_id (GTK_OBJECT (container), vadjustment_key_id);
if (adjustment)
gtk_adjustment_clamp_page (adjustment,
container->focus_child->allocation.y,
(container->focus_child->allocation.y +
container->focus_child->allocation.height));
adjustment = gtk_object_get_data_by_id (GTK_OBJECT (container), hadjustment_key_id);
if (adjustment)
gtk_adjustment_clamp_page (adjustment,
container->focus_child->allocation.x,
(container->focus_child->allocation.x +
container->focus_child->allocation.width));
}
}
static gint
gtk_container_real_focus (GtkContainer *container,
GtkDirectionType direction)
{
GList *children;
GList *tmp_list;
GList *tmp_list2;
gint return_val;
g_return_val_if_fail (container != NULL, FALSE);
g_return_val_if_fail (GTK_IS_CONTAINER (container), FALSE);
/* Fail if the container is inappropriate for focus movement
*/
if (!GTK_WIDGET_DRAWABLE (container) ||
!GTK_WIDGET_IS_SENSITIVE (container))
return FALSE;
return_val = FALSE;
if (GTK_WIDGET_CAN_FOCUS (container))
{
gtk_widget_grab_focus (GTK_WIDGET (container));
return_val = TRUE;
}
else
{
/* Get a list of the containers children
*/
children = NULL;
gtk_container_forall (container,
gtk_container_children_callback,
&children);
children = g_list_reverse (children);
/* children = gtk_container_children (container); */
if (children)
{
/* Remove any children which are inappropriate for focus movement
*/
tmp_list = children;
while (tmp_list)
{
if (GTK_WIDGET_IS_SENSITIVE (tmp_list->data) &&
GTK_WIDGET_DRAWABLE (tmp_list->data) &&
(GTK_IS_CONTAINER (tmp_list->data) || GTK_WIDGET_CAN_FOCUS (tmp_list->data)))
tmp_list = tmp_list->next;
else
{
tmp_list2 = tmp_list;
tmp_list = tmp_list->next;
children = g_list_remove_link (children, tmp_list2);
g_list_free_1 (tmp_list2);
}
}
switch (direction)
{
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_TAB_BACKWARD:
return_val = gtk_container_focus_tab (container, children, direction);
break;
case GTK_DIR_UP:
case GTK_DIR_DOWN:
return_val = gtk_container_focus_up_down (container, children, direction);
break;
case GTK_DIR_LEFT:
case GTK_DIR_RIGHT:
return_val = gtk_container_focus_left_right (container, children, direction);
break;
}
g_list_free (children);
}
}
return return_val;
}
static gint
gtk_container_focus_tab (GtkContainer *container,
GList *children,
GtkDirectionType direction)
{
GtkWidget *child;
GtkWidget *child2;
GList *tmp_list;
guint length;
guint i, j;
length = g_list_length (children);
/* sort the children in the y direction */
for (i = 1; i < length; i++)
{
j = i;
tmp_list = g_list_nth (children, j);
child = tmp_list->data;
while (j > 0)
{
child2 = tmp_list->prev->data;
if (child->allocation.y < child2->allocation.y)
{
tmp_list->data = tmp_list->prev->data;
tmp_list = tmp_list->prev;
j--;
}
else
break;
}
tmp_list->data = child;
}
/* sort the children in the x direction while
* maintaining the y direction sort.
*/
for (i = 1; i < length; i++)
{
j = i;
tmp_list = g_list_nth (children, j);
child = tmp_list->data;
while (j > 0)
{
child2 = tmp_list->prev->data;
if ((child->allocation.x < child2->allocation.x) &&
(child->allocation.y == child2->allocation.y))
{
tmp_list->data = tmp_list->prev->data;
tmp_list = tmp_list->prev;
j--;
}
else
break;
}
tmp_list->data = child;
}
/* if we are going backwards then reverse the order
* of the children.
*/
if (direction == GTK_DIR_TAB_BACKWARD)
children = g_list_reverse (children);
return gtk_container_focus_move (container, children, direction);
}
static gint
gtk_container_focus_up_down (GtkContainer *container,
GList *children,
GtkDirectionType direction)
{
GtkWidget *child;
GtkWidget *child2;
GList *tmp_list;
gint dist1, dist2;
gint focus_x;
gint focus_width;
guint length;
guint i, j;
/* return failure if there isn't a focus child */
if (container->focus_child)
{
focus_width = container->focus_child->allocation.width / 2;
focus_x = container->focus_child->allocation.x + focus_width;
}
else
{
focus_width = GTK_WIDGET (container)->allocation.width;
if (GTK_WIDGET_NO_WINDOW (container))
focus_x = GTK_WIDGET (container)->allocation.x;
else
focus_x = 0;
}
length = g_list_length (children);
/* sort the children in the y direction */
for (i = 1; i < length; i++)
{
j = i;
tmp_list = g_list_nth (children, j);
child = tmp_list->data;
while (j > 0)
{
child2 = tmp_list->prev->data;
if (child->allocation.y < child2->allocation.y)
{
tmp_list->data = tmp_list->prev->data;
tmp_list = tmp_list->prev;
j--;
}
else
break;
}
tmp_list->data = child;
}
/* sort the children in distance in the x direction
* in distance from the current focus child while maintaining the
* sort in the y direction
*/
for (i = 1; i < length; i++)
{
j = i;
tmp_list = g_list_nth (children, j);
child = tmp_list->data;
dist1 = (child->allocation.x + child->allocation.width / 2) - focus_x;
while (j > 0)
{
child2 = tmp_list->prev->data;
dist2 = (child2->allocation.x + child2->allocation.width / 2) - focus_x;
if ((dist1 < dist2) &&
(child->allocation.y >= child2->allocation.y))
{
tmp_list->data = tmp_list->prev->data;
tmp_list = tmp_list->prev;
j--;
}
else
break;
}
tmp_list->data = child;
}
/* go and invalidate any widget which is too
* far from the focus widget.
*/
if (!container->focus_child &&
(direction == GTK_DIR_UP))
focus_x += focus_width;
tmp_list = children;
while (tmp_list)
{
child = tmp_list->data;
dist1 = (child->allocation.x + child->allocation.width / 2) - focus_x;
if (((direction == GTK_DIR_DOWN) && (dist1 < 0)) ||
((direction == GTK_DIR_UP) && (dist1 > 0)))
tmp_list->data = NULL;
tmp_list = tmp_list->next;
}
if (direction == GTK_DIR_UP)
children = g_list_reverse (children);
return gtk_container_focus_move (container, children, direction);
}
static gint
gtk_container_focus_left_right (GtkContainer *container,
GList *children,
GtkDirectionType direction)
{
GtkWidget *child;
GtkWidget *child2;
GList *tmp_list;
gint dist1, dist2;
gint focus_y;
gint focus_height;
guint length;
guint i, j;
/* return failure if there isn't a focus child */
if (container->focus_child)
{
focus_height = container->focus_child->allocation.height / 2;
focus_y = container->focus_child->allocation.y + focus_height;
}
else
{
focus_height = GTK_WIDGET (container)->allocation.height;
if (GTK_WIDGET_NO_WINDOW (container))
focus_y = GTK_WIDGET (container)->allocation.y;
else
focus_y = 0;
}
length = g_list_length (children);
/* sort the children in the x direction */
for (i = 1; i < length; i++)
{
j = i;
tmp_list = g_list_nth (children, j);
child = tmp_list->data;
while (j > 0)
{
child2 = tmp_list->prev->data;
if (child->allocation.x < child2->allocation.x)
{
tmp_list->data = tmp_list->prev->data;
tmp_list = tmp_list->prev;
j--;
}
else
break;
}
tmp_list->data = child;
}
/* sort the children in distance in the y direction
* in distance from the current focus child while maintaining the
* sort in the x direction
*/
for (i = 1; i < length; i++)
{
j = i;
tmp_list = g_list_nth (children, j);
child = tmp_list->data;
dist1 = (child->allocation.y + child->allocation.height / 2) - focus_y;
while (j > 0)
{
child2 = tmp_list->prev->data;
dist2 = (child2->allocation.y + child2->allocation.height / 2) - focus_y;
if ((dist1 < dist2) &&
(child->allocation.x >= child2->allocation.x))
{
tmp_list->data = tmp_list->prev->data;
tmp_list = tmp_list->prev;
j--;
}
else
break;
}
tmp_list->data = child;
}
/* go and invalidate any widget which is too
* far from the focus widget.
*/
if (!container->focus_child &&
(direction == GTK_DIR_LEFT))
focus_y += focus_height;
tmp_list = children;
while (tmp_list)
{
child = tmp_list->data;
dist1 = (child->allocation.y + child->allocation.height / 2) - focus_y;
if (((direction == GTK_DIR_RIGHT) && (dist1 < 0)) ||
((direction == GTK_DIR_LEFT) && (dist1 > 0)))
tmp_list->data = NULL;
tmp_list = tmp_list->next;
}
if (direction == GTK_DIR_LEFT)
children = g_list_reverse (children);
return gtk_container_focus_move (container, children, direction);
}
static gint
gtk_container_focus_move (GtkContainer *container,
GList *children,
GtkDirectionType direction)
{
GtkWidget *focus_child;
GtkWidget *child;
focus_child = container->focus_child;
gtk_container_set_focus_child (container, NULL);
while (children)
{
child = children->data;
children = children->next;
if (!child)
continue;
if (focus_child)
{
if (focus_child == child)
{
focus_child = NULL;
if (GTK_WIDGET_DRAWABLE (child) &&
GTK_IS_CONTAINER (child) &&
!GTK_WIDGET_HAS_FOCUS (child))
if (gtk_container_focus (GTK_CONTAINER (child), direction))
return TRUE;
}
}
else if (GTK_WIDGET_DRAWABLE (child))
{
if (GTK_IS_CONTAINER (child))
{
if (gtk_container_focus (GTK_CONTAINER (child), direction))
return TRUE;
}
else if (GTK_WIDGET_CAN_FOCUS (child))
{
gtk_widget_grab_focus (child);
return TRUE;
}
}
}
return FALSE;
}
static void
gtk_container_children_callback (GtkWidget *widget,
gpointer client_data)
{
GList **children;
children = (GList**) client_data;
*children = g_list_prepend (*children, widget);
}
void
gtk_container_set_focus_vadjustment (GtkContainer *container,
GtkAdjustment *adjustment)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
if (adjustment)
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
if (adjustment)
gtk_object_ref (GTK_OBJECT(adjustment));
gtk_object_set_data_by_id_full (GTK_OBJECT (container),
vadjustment_key_id,
adjustment,
(GtkDestroyNotify) gtk_object_unref);
}
void
gtk_container_set_focus_hadjustment (GtkContainer *container,
GtkAdjustment *adjustment)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
if (adjustment)
g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
if (adjustment)
gtk_object_ref (GTK_OBJECT (adjustment));
gtk_object_set_data_by_id_full (GTK_OBJECT (container),
hadjustment_key_id,
adjustment,
(GtkDestroyNotify) gtk_object_unref);
}
static void
gtk_container_show_all (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_CONTAINER (widget));
gtk_container_foreach (GTK_CONTAINER (widget),
(GtkCallback) gtk_widget_show_all,
NULL);
gtk_widget_show (widget);
}
static void
gtk_container_hide_all (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_CONTAINER (widget));
gtk_widget_hide (widget);
gtk_container_foreach (GTK_CONTAINER (widget),
(GtkCallback) gtk_widget_hide_all,
NULL);
}
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