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gtk2/gtk/gtkcontainer.c
Tim Janik 3c90c2cd53 replaced some gtk_object_data_force_id with g_quark_from_static_string 
Fri Jun 19 03:29:04 1998  Tim Janik  <timj@gtk.org>

        * gtk/gtkaccelgroup.c:
        * gtk/gtkbindings.c:
        * gtk/gtkcontainer.c:
        * gtk/gtkitemfactory.c:
        * gtk/gtkobject.c:
        * gtk/gtksignal.c:
        * gtk/gtkwidget.c: replaced some gtk_object_data_force_id with
        g_quark_from_static_string calls to save memory.

        * gtk/gtkobject.c (gtk_object_set_data_by_id_full): invoke the destroy
        function _after_ the new data has been setup.
        minor changes to object data functions to feature the GQuark type.
1998-06-19 02:07:47 +00:00

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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.
*/
#include <string.h>
#include "gtkcontainer.h"
#include "gtkprivate.h"
#include "gtksignal.h"
#include <stdarg.h>
enum {
ADD,
REMOVE,
CHECK_RESIZE,
FOREACH,
FOCUS,
SET_FOCUS_CHILD,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_BORDER_WIDTH,
ARG_CHILD
};
typedef struct _GtkLArgInfo GtkLArgInfo;
struct _GtkLArgInfo
{
gchar *name;
GtkType type;
GtkType class_type;
guint arg_flags;
guint arg_id;
guint seq_id;
};
typedef void (*GtkContainerSignal1) (GtkObject *object,
gpointer arg1,
gpointer data);
typedef void (*GtkContainerSignal2) (GtkObject *object,
GtkFunction arg1,
gpointer arg2,
gpointer data);
typedef gint (*GtkContainerSignal3) (GtkObject *object,
gint arg1,
gpointer data);
typedef gint (*GtkContainerSignal4) (GtkObject *object,
gpointer data);
static void gtk_container_marshal_signal_1 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args);
static void gtk_container_marshal_signal_2 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args);
static void gtk_container_marshal_signal_3 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args);
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 (GtkContainer *container,
GtkArg *arg,
guint arg_id);
static void gtk_container_set_arg (GtkContainer *container,
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);
GtkArg* gtk_object_collect_args (guint *n_args,
va_list args1,
va_list args2);
static guint container_signals[LAST_SIGNAL] = { 0 };
static GHashTable *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;
GtkType
gtk_container_get_type (void)
{
static GtkType container_type = 0;
if (!container_type)
{
GtkTypeInfo container_info =
{
"GtkContainer",
sizeof (GtkContainer),
sizeof (GtkContainerClass),
(GtkClassInitFunc) gtk_container_class_init,
(GtkObjectInitFunc) gtk_container_init,
(GtkArgSetFunc) gtk_container_set_arg,
(GtkArgGetFunc) gtk_container_get_arg,
};
container_type = gtk_type_unique (gtk_widget_get_type (), &container_info);
}
return container_type;
}
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 ());
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::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_container_marshal_signal_1,
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_container_marshal_signal_1,
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_signal_default_marshaller,
GTK_TYPE_NONE, 0);
container_signals[FOREACH] =
gtk_signal_new ("foreach",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkContainerClass, foreach),
gtk_container_marshal_signal_2,
GTK_TYPE_NONE, 1,
GTK_TYPE_C_CALLBACK);
container_signals[FOCUS] =
gtk_signal_new ("focus",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkContainerClass, focus),
gtk_container_marshal_signal_3,
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_container_marshal_signal_1,
GTK_TYPE_NONE, 1,
GTK_TYPE_WIDGET);
gtk_object_class_add_signals (object_class, container_signals, LAST_SIGNAL);
object_class->destroy = gtk_container_destroy;
/* Other container classes should overwrite show_all and hide_all,
* for the purpose of showing internal children also, which are not
* accessable through gtk_container_foreach.
*/
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->foreach = NULL;
class->focus = gtk_container_real_focus;
class->set_focus_child = gtk_container_real_set_focus_child;
/* linkage */
class->child_type = NULL;
class->get_child_arg = NULL;
class->set_child_arg = NULL;
}
static void
gtk_container_get_child_arg (GtkContainer *container,
GtkWidget *child,
GtkType type,
GtkArg *arg,
guint arg_id)
{
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));
class = GTK_CONTAINER_CLASS (GTK_OBJECT (container)->klass);
if (class->get_child_arg)
class->get_child_arg (container, child, arg, arg_id);
else
arg->type = GTK_TYPE_INVALID;
}
static void
gtk_container_set_child_arg (GtkContainer *container,
GtkWidget *child,
GtkType type,
GtkArg *arg,
guint arg_id)
{
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));
class = GTK_CONTAINER_CLASS (GTK_OBJECT (container)->klass);
if (class->set_child_arg)
class->set_child_arg (container, child, arg, arg_id);
}
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);
slot = GTK_TYPE_NONE;
class = GTK_CONTAINER_CLASS (GTK_OBJECT (container)->klass);
if (class->child_type)
slot = class->child_type (container);
return slot;
}
void
gtk_container_add_child_arg_type (const gchar *arg_name,
GtkType arg_type,
guint arg_flags,
guint arg_id)
{
GtkLArgInfo *info;
gchar class_part[1024];
gchar *arg_part;
GtkType class_type;
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);
arg_flags |= GTK_ARG_CHILD_ARG;
arg_flags &= GTK_ARG_MASK;
arg_part = strchr (arg_name, ':');
if (!arg_part || (arg_part[0] != ':') || (arg_part[1] != ':'))
{
g_warning ("gtk_container_add_arg_type(): invalid arg name: \"%s\"\n", arg_name);
return;
}
strncpy (class_part, arg_name, (glong) (arg_part - arg_name));
class_part[(glong) (arg_part - arg_name)] = '\0';
class_type = gtk_type_from_name (class_part);
if (!class_type && !gtk_type_is_a (class_type, GTK_TYPE_CONTAINER))
{
g_warning ("gtk_container_add_arg_type(): invalid class name in arg: \"%s\"\n", arg_name);
return;
}
info = g_new (GtkLArgInfo, 1);
info->name = g_strdup (arg_name);
info->type = arg_type;
info->class_type = class_type;
info->arg_flags = arg_flags;
info->arg_id = arg_id;
info->seq_id = ++((GtkContainerClass*) gtk_type_class (class_type))->n_child_args;
if (!arg_info_ht)
arg_info_ht = g_hash_table_new (g_str_hash, g_str_equal);
g_hash_table_insert (arg_info_ht, info->name, info);
}
typedef struct
{
GList *arg_list;
GtkType class_type;
} GtkQueryLArgData;
static void
gtk_query_larg_foreach (gpointer key,
gpointer value,
gpointer user_data)
{
register GtkLArgInfo *info;
register GtkQueryLArgData *data;
info = value;
data = user_data;
if (info->class_type == data->class_type)
data->arg_list = g_list_prepend (data->arg_list, info);
}
GtkArg*
gtk_container_query_child_args (GtkType class_type,
guint32 **arg_flags,
guint *n_args)
{
GtkArg *args;
GtkQueryLArgData query_data;
if (arg_flags)
*arg_flags = NULL;
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);
if (!arg_info_ht)
return NULL;
/* make sure the types class has been initialized, because
* the argument setup happens in the gtk_*_class_init() functions.
*/
gtk_type_class (class_type);
query_data.arg_list = NULL;
query_data.class_type = class_type;
g_hash_table_foreach (arg_info_ht, gtk_query_larg_foreach, &query_data);
if (query_data.arg_list)
{
register GList *list;
register guint len;
list = query_data.arg_list;
len = 1;
while (list->next)
{
len++;
list = list->next;
}
g_assert (len == ((GtkContainerClass*) gtk_type_class (class_type))->n_child_args); /* paranoid */
args = g_new0 (GtkArg, len);
*n_args = len;
if (arg_flags)
*arg_flags = g_new (guint32, len);
do
{
GtkLArgInfo *info;
info = list->data;
list = list->prev;
g_assert (info->seq_id > 0 && info->seq_id <= len); /* paranoid */
args[info->seq_id - 1].type = info->type;
args[info->seq_id - 1].name = info->name;
if (arg_flags)
(*arg_flags)[info->seq_id - 1] = info->arg_flags;
}
while (list);
g_list_free (query_data.arg_list);
}
else
args = NULL;
return args;
}
void
gtk_container_child_arg_getv (GtkContainer *container,
GtkWidget *child,
guint n_args,
GtkArg *args)
{
guint i;
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));
if (!arg_info_ht)
return;
for (i = 0; i < n_args; i++)
{
GtkLArgInfo *info;
gchar *lookup_name;
gchar *d;
/* hm, the name cutting shouldn't be needed on gets, but what the heck...
*/
lookup_name = g_strdup (args[i].name);
d = strchr (lookup_name, ':');
if (d && d[1] == ':')
{
d = strchr (d + 2, ':');
if (d)
*d = 0;
info = g_hash_table_lookup (arg_info_ht, lookup_name);
}
else
info = NULL;
if (!info)
{
g_warning ("gtk_container_child_arg_getv(): invalid arg name: \"%s\"\n",
lookup_name);
args[i].type = GTK_TYPE_INVALID;
g_free (lookup_name);
continue;
}
else if (!gtk_type_is_a (GTK_OBJECT_TYPE (container), info->class_type))
{
g_warning ("gtk_container_child_arg_getv(): invalid arg for %s: \"%s\"\n",
gtk_type_name (GTK_OBJECT_TYPE (container)), lookup_name);
args[i].type = GTK_TYPE_INVALID;
g_free (lookup_name);
continue;
}
else if (! (info->arg_flags & GTK_ARG_READABLE))
{
g_warning ("gtk_container_child_arg_getv(): arg is not supplied for read-access: \"%s\"\n",
lookup_name);
args[i].type = GTK_TYPE_INVALID;
g_free (lookup_name);
continue;
}
else
g_free (lookup_name);
args[i].type = info->type;
gtk_container_get_child_arg (container, child, info->class_type, &args[i], info->arg_id);
}
}
void
gtk_container_child_arg_setv (GtkContainer *container,
GtkWidget *child,
guint n_args,
GtkArg *args)
{
guint i;
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));
if (!arg_info_ht)
return;
for (i = 0; i < n_args; i++)
{
GtkLArgInfo *info;
gchar *lookup_name;
gchar *d;
gboolean arg_ok;
lookup_name = g_strdup (args[i].name);
d = strchr (lookup_name, ':');
if (d && d[1] == ':')
{
d = strchr (d + 2, ':');
if (d)
*d = 0;
info = g_hash_table_lookup (arg_info_ht, lookup_name);
}
else
info = NULL;
arg_ok = TRUE;
if (!info)
{
g_warning ("gtk_container_child_arg_setv(): invalid arg name: \"%s\"\n",
lookup_name);
arg_ok = FALSE;
}
else if (info->type != args[i].type)
{
g_warning ("gtk_container_child_arg_setv(): invalid arg type for: \"%s\"\n",
lookup_name);
arg_ok = FALSE;
}
else if (!gtk_type_is_a (GTK_OBJECT_TYPE (container), info->class_type))
{
g_warning ("gtk_container_child_arg_setv(): invalid arg for %s: \"%s\"\n",
gtk_type_name (GTK_OBJECT_TYPE (container)), lookup_name);
arg_ok = FALSE;
}
else if (! (info->arg_flags & GTK_ARG_WRITABLE))
{
g_warning ("gtk_container_child_arg_setv(): arg is not supplied for write-access: \"%s\"\n",
lookup_name);
arg_ok = FALSE;
}
g_free (lookup_name);
if (!arg_ok)
continue;
gtk_container_set_child_arg (container, child, info->class_type, &args[i], info->arg_id);
}
}
void
gtk_container_add_with_args (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_widget_ref (GTK_WIDGET (container));
gtk_widget_ref (widget);
gtk_signal_emit (GTK_OBJECT (container), container_signals[ADD], widget);
if (widget->parent)
{
GtkArg *args;
guint n_args;
va_list args1;
va_list args2;
va_start (args1, widget);
va_start (args2, widget);
args = gtk_object_collect_args (&n_args, args1, args2);
gtk_container_child_arg_setv (container, widget, n_args, args);
g_free (args);
va_end (args1);
va_end (args2);
}
gtk_widget_unref (widget);
gtk_widget_unref (GTK_WIDGET (container));
}
void
gtk_container_add_with_argv (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)
gtk_container_child_arg_setv (container, widget, n_args, args);
gtk_widget_unref (widget);
gtk_widget_unref (GTK_WIDGET (container));
}
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);
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 (GtkContainer *container,
GtkArg *arg,
guint arg_id)
{
switch (arg_id)
{
case ARG_BORDER_WIDTH:
gtk_container_border_width (container, GTK_VALUE_ULONG (*arg));
break;
case ARG_CHILD:
gtk_container_add (container, GTK_WIDGET (GTK_VALUE_OBJECT (*arg)));
break;
default:
break;
}
}
static void
gtk_container_get_arg (GtkContainer *container,
GtkArg *arg,
guint arg_id)
{
switch (arg_id)
{
case ARG_BORDER_WIDTH:
GTK_VALUE_ULONG (*arg) = container->border_width;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
void
gtk_container_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_disable_resize (GtkContainer *container)
{
g_warning ("gtk_container_disable_resize does nothing!");
}
void
gtk_container_enable_resize (GtkContainer *container)
{
g_warning ("gtk_container_enable_resize does nothing!");
}
void
gtk_container_block_resize (GtkContainer *container)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
}
void
gtk_container_unblock_resize (GtkContainer *container)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
}
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;
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 (!(GTK_WIDGET_TOPLEVEL (container) &&
resize_mode == GTK_RESIZE_PARENT));
container->resize_mode = resize_mode;
if (container->resize_widgets != NULL)
{
if (resize_mode == GTK_RESIZE_IMMEDIATE)
gtk_container_check_resize (container);
else if (resize_mode == GTK_RESIZE_PARENT)
{
gtk_widget_queue_resize (GTK_WIDGET (container));
container->resize_widgets = NULL;
}
}
}
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]);
}
gint
gtk_container_need_resize (GtkContainer *container)
{
gtk_container_check_resize (container);
return TRUE;
}
static void
gtk_container_real_check_resize (GtkContainer *container)
{
GtkWidget *widget;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
widget = GTK_WIDGET (container);
gtk_widget_size_request (widget, &widget->requisition);
if ((widget->requisition.width > widget->allocation.width) ||
(widget->requisition.height > widget->allocation.height))
{
gtk_container_clear_resize_widgets (container);
gtk_widget_queue_resize (widget);
}
else
{
gtk_container_resize_children (container);
}
}
/* The window 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;
GSList *resize_widgets;
GSList *resize_containers;
GSList *node;
resize_widgets = container->resize_widgets;
container->resize_widgets = NULL;
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
for (node = resize_widgets; node; node = node->next)
{
widget = node->data;
GTK_PRIVATE_UNSET_FLAG (widget, GTK_RESIZE_NEEDED);
while (widget && widget->parent &&
((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;
}
resize_containers = NULL;
for (node = resize_widgets; node; node = node->next)
{
GtkWidget *resize_container;
widget = node->data;
if (!GTK_WIDGET_RESIZE_NEEDED (widget))
continue;
resize_container = widget->parent;
if (resize_container)
{
GTK_PRIVATE_UNSET_FLAG (widget, GTK_RESIZE_NEEDED);
widget = resize_container->parent;
while (widget)
{
if (GTK_WIDGET_RESIZE_NEEDED (widget))
{
GTK_PRIVATE_UNSET_FLAG (resize_container, GTK_RESIZE_NEEDED);
resize_container = widget;
}
widget = widget->parent;
}
}
else
resize_container = widget;
if (!g_slist_find (resize_containers, resize_container))
resize_containers = g_slist_prepend (resize_containers,
resize_container);
}
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_queue_draw (widget);
}
g_slist_free (resize_containers);
}
void
gtk_container_foreach (GtkContainer *container,
GtkCallback callback,
gpointer callback_data)
{
g_return_if_fail (container != NULL);
g_return_if_fail (GTK_IS_CONTAINER (container));
g_return_if_fail (callback != NULL);
gtk_signal_emit (GTK_OBJECT (container),
container_signals[FOREACH],
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_interp (GtkContainer *container,
GtkCallbackMarshal marshal,
gpointer callback_data,
GtkDestroyNotify notify)
{
gtk_container_foreach_full (container, NULL, marshal,
callback_data, notify);
}
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 (container));
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)
{
gtk_widget_ref (GTK_WIDGET (container));
gtk_object_sink (GTK_OBJECT (container));
}
void
gtk_container_unregister_toplevel (GtkContainer *container)
{
gtk_widget_unref (GTK_WIDGET (container));
}
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 void
gtk_container_marshal_signal_1 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args)
{
GtkContainerSignal1 rfunc;
rfunc = (GtkContainerSignal1) func;
(* rfunc) (object, GTK_VALUE_OBJECT (args[0]), func_data);
}
static void
gtk_container_marshal_signal_2 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args)
{
GtkContainerSignal2 rfunc;
rfunc = (GtkContainerSignal2) func;
(* rfunc) (object,
GTK_VALUE_C_CALLBACK(args[0]).func,
GTK_VALUE_C_CALLBACK(args[0]).func_data,
func_data);
}
static void
gtk_container_marshal_signal_3 (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args)
{
GtkContainerSignal3 rfunc;
gint *return_val;
rfunc = (GtkContainerSignal3) func;
return_val = GTK_RETLOC_ENUM (args[1]);
*return_val = (* rfunc) (object, GTK_VALUE_ENUM(args[0]), func_data);
}
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 insensitive
*/
if (!GTK_WIDGET_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 = gtk_container_children (container);
if (children)
{
/* Remove any children which are insensitive
*/
tmp_list = children;
while (tmp_list)
{
if (!GTK_WIDGET_SENSITIVE (tmp_list->data))
{
tmp_list2 = tmp_list;
tmp_list = tmp_list->next;
children = g_list_remove_link (children, tmp_list2);
g_list_free_1 (tmp_list2);
}
else
tmp_list = tmp_list->next;
}
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_VISIBLE (child) &&
GTK_IS_CONTAINER (child) &&
!GTK_WIDGET_HAS_FOCUS (child))
if (gtk_container_focus (GTK_CONTAINER (child), direction))
return TRUE;
}
}
else if (GTK_WIDGET_VISIBLE (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);
}
static void
gtk_container_show_all (GtkWidget *widget)
{
GtkContainer *container;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_CONTAINER (widget));
container = GTK_CONTAINER (widget);
/* First show children, then self.
This makes sure that toplevel windows get shown as last widget.
Otherwise the user would see the widgets get
visible one after another.
*/
gtk_container_foreach (container, (GtkCallback) gtk_widget_show_all, NULL);
gtk_widget_show (widget);
}
static void
gtk_container_hide_all (GtkWidget *widget)
{
GtkContainer *container;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_CONTAINER (widget));
container = GTK_CONTAINER (widget);
/* First hide self, then children.
This is the reverse order of gtk_container_show_all.
*/
gtk_widget_hide (widget);
gtk_container_foreach (container, (GtkCallback) gtk_widget_hide_all, NULL);
}
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);
}
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