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gtk2/gtk/gtkmenubar.c

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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 Lesser 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
* Lesser 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 <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. 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/.
*/
/**
* SECTION:gtkmenubar
* @Title: GtkMenuBar
* @Short_description: A subclass of GtkMenuShell which holds GtkMenuItem widgets
* @See_also: #GtkMenuShell, #GtkMenu, #GtkMenuItem
*
* The #GtkMenuBar is a subclass of #GtkMenuShell which contains one or
* more #GtkMenuItems. The result is a standard menu bar which can hold
* many menu items.
*
* # CSS nodes
*
* GtkMenuBar has a single CSS node with name menubar.
*/
#include "config.h"
#include "gtkmenubar.h"
#include "gtkbindings.h"
#include "gtkcsscustomgadgetprivate.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkmenuitemprivate.h"
#include "gtkmenuprivate.h"
#include "gtkmenushellprivate.h"
#include "gtkrender.h"
#include "gtksettings.h"
#include "gtksizerequest.h"
#include "gtkwindow.h"
#include "gtkcontainerprivate.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtktypebuiltins.h"
#include "gtkwidgetprivate.h"
#define MENU_BAR_POPUP_DELAY 0
/* Properties */
enum {
PROP_0,
PROP_PACK_DIRECTION,
PROP_CHILD_PACK_DIRECTION
};
struct _GtkMenuBarPrivate
{
GtkPackDirection pack_direction;
GtkPackDirection child_pack_direction;
GtkCssGadget *gadget;
};
static void gtk_menu_bar_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_menu_bar_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_menu_bar_finalize (GObject *object);
static void gtk_menu_bar_measure_ (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline);
static void gtk_menu_bar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gint gtk_menu_bar_draw (GtkWidget *widget,
cairo_t *cr);
static void gtk_menu_bar_hierarchy_changed (GtkWidget *widget,
GtkWidget *old_toplevel);
static gint gtk_menu_bar_get_popup_delay (GtkMenuShell *menu_shell);
static void gtk_menu_bar_move_current (GtkMenuShell *menu_shell,
GtkMenuDirectionType direction);
static void gtk_menu_bar_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer data);
static void gtk_menu_bar_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data);
static gboolean gtk_menu_bar_render (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data);
G_DEFINE_TYPE_WITH_PRIVATE (GtkMenuBar, gtk_menu_bar, GTK_TYPE_MENU_SHELL)
static void
gtk_menu_bar_class_init (GtkMenuBarClass *class)
{
GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
GtkMenuShellClass *menu_shell_class;
GtkBindingSet *binding_set;
gobject_class = (GObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
menu_shell_class = (GtkMenuShellClass*) class;
gobject_class->get_property = gtk_menu_bar_get_property;
gobject_class->set_property = gtk_menu_bar_set_property;
gobject_class->finalize = gtk_menu_bar_finalize;
widget_class->measure = gtk_menu_bar_measure_;
widget_class->size_allocate = gtk_menu_bar_size_allocate;
widget_class->draw = gtk_menu_bar_draw;
widget_class->hierarchy_changed = gtk_menu_bar_hierarchy_changed;
menu_shell_class->submenu_placement = GTK_TOP_BOTTOM;
menu_shell_class->get_popup_delay = gtk_menu_bar_get_popup_delay;
menu_shell_class->move_current = gtk_menu_bar_move_current;
binding_set = gtk_binding_set_by_class (class);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Left, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PREV);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Left, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PREV);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Right, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_NEXT);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Right, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_NEXT);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Up, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PARENT);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Up, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PARENT);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Down, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_CHILD);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Down, 0,
"move-current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_CHILD);
/**
* GtkMenuBar:pack-direction:
*
* The pack direction of the menubar. It determines how
* menuitems are arranged in the menubar.
*
* Since: 2.8
*/
g_object_class_install_property (gobject_class,
PROP_PACK_DIRECTION,
g_param_spec_enum ("pack-direction",
P_("Pack direction"),
P_("The pack direction of the menubar"),
GTK_TYPE_PACK_DIRECTION,
GTK_PACK_DIRECTION_LTR,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkMenuBar:child-pack-direction:
*
* The child pack direction of the menubar. It determines how
* the widgets contained in child menuitems are arranged.
*
* Since: 2.8
*/
g_object_class_install_property (gobject_class,
PROP_CHILD_PACK_DIRECTION,
g_param_spec_enum ("child-pack-direction",
P_("Child Pack direction"),
P_("The child pack direction of the menubar"),
GTK_TYPE_PACK_DIRECTION,
GTK_PACK_DIRECTION_LTR,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_MENU_BAR);
gtk_widget_class_set_css_name (widget_class, "menubar");
}
static void
gtk_menu_bar_init (GtkMenuBar *menu_bar)
{
GtkMenuBarPrivate *priv;
GtkWidget *widget;
GtkCssNode *widget_node;
priv = menu_bar->priv = gtk_menu_bar_get_instance_private (menu_bar);
widget = GTK_WIDGET (menu_bar);
widget_node = gtk_widget_get_css_node (widget);
priv->gadget = gtk_css_custom_gadget_new_for_node (widget_node,
widget,
gtk_menu_bar_measure,
gtk_menu_bar_allocate,
gtk_menu_bar_render,
NULL,
NULL, NULL);
}
/**
* gtk_menu_bar_new:
*
* Creates a new #GtkMenuBar
*
* Returns: the new menu bar, as a #GtkWidget
*/
GtkWidget*
gtk_menu_bar_new (void)
{
return g_object_new (GTK_TYPE_MENU_BAR, NULL);
}
static void
gtk_menu_bar_finalize (GObject *object)
{
GtkMenuBar *menu_bar = GTK_MENU_BAR (object);
g_clear_object (&menu_bar->priv->gadget);
G_OBJECT_CLASS (gtk_menu_bar_parent_class)->finalize (object);
}
static void
gtk_menu_bar_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkMenuBar *menubar = GTK_MENU_BAR (object);
switch (prop_id)
{
case PROP_PACK_DIRECTION:
gtk_menu_bar_set_pack_direction (menubar, g_value_get_enum (value));
break;
case PROP_CHILD_PACK_DIRECTION:
gtk_menu_bar_set_child_pack_direction (menubar, g_value_get_enum (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_menu_bar_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkMenuBar *menubar = GTK_MENU_BAR (object);
switch (prop_id)
{
case PROP_PACK_DIRECTION:
g_value_set_enum (value, gtk_menu_bar_get_pack_direction (menubar));
break;
case PROP_CHILD_PACK_DIRECTION:
g_value_set_enum (value, gtk_menu_bar_get_child_pack_direction (menubar));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_menu_bar_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
int size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GtkMenuBar *menu_bar;
GtkMenuBarPrivate *priv;
GtkMenuShell *menu_shell;
GtkWidget *child;
GList *children;
gboolean use_toggle_size, use_maximize;
gint child_minimum, child_natural;
*minimum = 0;
*natural = 0;
menu_bar = GTK_MENU_BAR (widget);
menu_shell = GTK_MENU_SHELL (widget);
priv = menu_bar->priv;
children = menu_shell->priv->children;
if (priv->child_pack_direction == GTK_PACK_DIRECTION_LTR ||
priv->child_pack_direction == GTK_PACK_DIRECTION_RTL)
use_toggle_size = (orientation == GTK_ORIENTATION_HORIZONTAL);
else
use_toggle_size = (orientation == GTK_ORIENTATION_VERTICAL);
if (priv->pack_direction == GTK_PACK_DIRECTION_LTR ||
priv->pack_direction == GTK_PACK_DIRECTION_RTL)
use_maximize = (orientation == GTK_ORIENTATION_VERTICAL);
else
use_maximize = (orientation == GTK_ORIENTATION_HORIZONTAL);
while (children)
{
child = children->data;
children = children->next;
if (gtk_widget_get_visible (child))
{
gtk_widget_measure (child,
orientation,
size,
&child_minimum, &child_natural,
NULL, NULL);
if (use_toggle_size)
{
gint toggle_size;
gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
&toggle_size);
child_minimum += toggle_size;
child_natural += toggle_size;
}
if (use_maximize)
{
*minimum = MAX (*minimum, child_minimum);
*natural = MAX (*natural, child_natural);
}
else
{
*minimum += child_minimum;
*natural += child_natural;
}
}
}
}
static void
gtk_menu_bar_measure_ (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
gtk_css_gadget_get_preferred_size (GTK_MENU_BAR (widget)->priv->gadget,
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_menu_bar_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GtkMenuBar *menu_bar;
GtkMenuShell *menu_shell;
GtkMenuBarPrivate *priv;
GtkWidget *child;
GList *children;
GtkAllocation remaining_space;
GArray *requested_sizes;
gint toggle_size;
guint i;
menu_bar = GTK_MENU_BAR (widget);
menu_shell = GTK_MENU_SHELL (widget);
priv = menu_bar->priv;
if (!menu_shell->priv->children)
return;
remaining_space = *allocation;
requested_sizes = g_array_new (FALSE, FALSE, sizeof (GtkRequestedSize));
if (priv->pack_direction == GTK_PACK_DIRECTION_LTR ||
priv->pack_direction == GTK_PACK_DIRECTION_RTL)
{
int size = remaining_space.width;
gboolean ltr = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR) == (priv->pack_direction == GTK_PACK_DIRECTION_LTR);
for (children = menu_shell->priv->children; children; children = children->next)
{
GtkRequestedSize request;
child = children->data;
if (!gtk_widget_get_visible (child))
continue;
request.data = child;
gtk_widget_get_preferred_width_for_height (child,
remaining_space.height,
&request.minimum_size,
&request.natural_size);
gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
&toggle_size);
request.minimum_size += toggle_size;
request.natural_size += toggle_size;
gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child), toggle_size);
g_array_append_val (requested_sizes, request);
size -= request.minimum_size;
}
size = gtk_distribute_natural_allocation (size,
requested_sizes->len,
(GtkRequestedSize *) requested_sizes->data);
for (i = 0; i < requested_sizes->len; i++)
{
GtkAllocation child_allocation = remaining_space;
GtkRequestedSize *request = &g_array_index (requested_sizes, GtkRequestedSize, i);
child_allocation.width = request->minimum_size;
remaining_space.width -= request->minimum_size;
if (i + 1 == requested_sizes->len && GTK_IS_MENU_ITEM (request->data) &&
GTK_MENU_ITEM (request->data)->priv->right_justify)
ltr = !ltr;
if (ltr)
remaining_space.x += request->minimum_size;
else
child_allocation.x += remaining_space.width;
gtk_widget_size_allocate (request->data, &child_allocation);
}
}
else
{
int size = remaining_space.height;
gboolean ttb = (priv->pack_direction == GTK_PACK_DIRECTION_TTB);
for (children = menu_shell->priv->children; children; children = children->next)
{
GtkRequestedSize request;
child = children->data;
if (!gtk_widget_get_visible (child))
continue;
request.data = child;
gtk_widget_get_preferred_height_for_width (child,
remaining_space.width,
&request.minimum_size,
&request.natural_size);
gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
&toggle_size);
request.minimum_size += toggle_size;
request.natural_size += toggle_size;
gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child), toggle_size);
g_array_append_val (requested_sizes, request);
size -= request.minimum_size;
}
size = gtk_distribute_natural_allocation (size,
requested_sizes->len,
(GtkRequestedSize *) requested_sizes->data);
for (i = 0; i < requested_sizes->len; i++)
{
GtkAllocation child_allocation = remaining_space;
GtkRequestedSize *request = &g_array_index (requested_sizes, GtkRequestedSize, i);
child_allocation.height = request->minimum_size;
remaining_space.height -= request->minimum_size;
if (i + 1 == requested_sizes->len && GTK_IS_MENU_ITEM (request->data) &&
GTK_MENU_ITEM (request->data)->priv->right_justify)
ttb = !ttb;
if (ttb)
remaining_space.y += request->minimum_size;
else
child_allocation.y += remaining_space.height;
gtk_widget_size_allocate (request->data, &child_allocation);
}
}
g_array_free (requested_sizes, TRUE);
}
static void
gtk_menu_bar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkMenuBar *menu_bar = GTK_MENU_BAR (widget);
GtkMenuBarPrivate *priv = menu_bar->priv;
GtkAllocation clip;
GTK_WIDGET_CLASS (gtk_menu_bar_parent_class)->size_allocate (widget, allocation);
gtk_css_gadget_allocate (priv->gadget,
allocation,
gtk_widget_get_allocated_baseline (widget),
&clip);
gtk_widget_set_clip (widget, &clip);
}
static gboolean
gtk_menu_bar_render (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GTK_WIDGET_CLASS (gtk_menu_bar_parent_class)->draw (widget, cr);
return FALSE;
}
static gboolean
gtk_menu_bar_draw (GtkWidget *widget,
cairo_t *cr)
{
gtk_css_gadget_draw (GTK_MENU_BAR (widget)->priv->gadget, cr);
return FALSE;
}
static GList *
get_menu_bars (GtkWindow *window)
{
return g_object_get_data (G_OBJECT (window), "gtk-menu-bar-list");
}
GList *
_gtk_menu_bar_get_viewable_menu_bars (GtkWindow *window)
{
GList *menu_bars;
GList *viewable_menu_bars = NULL;
for (menu_bars = get_menu_bars (window);
menu_bars;
menu_bars = menu_bars->next)
{
GtkWidget *widget = menu_bars->data;
gboolean viewable = TRUE;
while (widget)
{
if (!gtk_widget_get_mapped (widget))
viewable = FALSE;
widget = gtk_widget_get_parent (widget);
}
if (viewable)
viewable_menu_bars = g_list_prepend (viewable_menu_bars, menu_bars->data);
}
return g_list_reverse (viewable_menu_bars);
}
static void
set_menu_bars (GtkWindow *window,
GList *menubars)
{
g_object_set_data (G_OBJECT (window), I_("gtk-menu-bar-list"), menubars);
}
static void
add_to_window (GtkWindow *window,
GtkMenuBar *menubar)
{
GList *menubars = get_menu_bars (window);
set_menu_bars (window, g_list_prepend (menubars, menubar));
}
static void
remove_from_window (GtkWindow *window,
GtkMenuBar *menubar)
{
GList *menubars = get_menu_bars (window);
menubars = g_list_remove (menubars, menubar);
set_menu_bars (window, menubars);
}
static void
gtk_menu_bar_hierarchy_changed (GtkWidget *widget,
GtkWidget *old_toplevel)
{
GtkWidget *toplevel;
GtkMenuBar *menubar;
menubar = GTK_MENU_BAR (widget);
toplevel = gtk_widget_get_toplevel (widget);
if (old_toplevel)
remove_from_window (GTK_WINDOW (old_toplevel), menubar);
if (gtk_widget_is_toplevel (toplevel))
add_to_window (GTK_WINDOW (toplevel), menubar);
}
/**
* _gtk_menu_bar_cycle_focus:
* @menubar: a #GtkMenuBar
* @dir: direction in which to cycle the focus
*
* Move the focus between menubars in the toplevel.
**/
void
_gtk_menu_bar_cycle_focus (GtkMenuBar *menubar,
GtkDirectionType dir)
{
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (menubar));
GtkMenuItem *to_activate = NULL;
if (gtk_widget_is_toplevel (toplevel))
{
GList *tmp_menubars = _gtk_menu_bar_get_viewable_menu_bars (GTK_WINDOW (toplevel));
GList *menubars;
GList *current;
menubars = _gtk_container_focus_sort (GTK_CONTAINER (toplevel), tmp_menubars,
dir, GTK_WIDGET (menubar));
g_list_free (tmp_menubars);
if (menubars)
{
current = g_list_find (menubars, menubar);
if (current && current->next)
{
GtkMenuShell *new_menushell = GTK_MENU_SHELL (current->next->data);
if (new_menushell->priv->children)
to_activate = new_menushell->priv->children->data;
}
}
g_list_free (menubars);
}
gtk_menu_shell_cancel (GTK_MENU_SHELL (menubar));
if (to_activate)
g_signal_emit_by_name (to_activate, "activate_item");
}
static gint
gtk_menu_bar_get_popup_delay (GtkMenuShell *menu_shell)
{
return MENU_BAR_POPUP_DELAY;
}
static void
gtk_menu_bar_move_current (GtkMenuShell *menu_shell,
GtkMenuDirectionType direction)
{
GtkMenuBar *menubar = GTK_MENU_BAR (menu_shell);
GtkTextDirection text_dir;
GtkPackDirection pack_dir;
text_dir = gtk_widget_get_direction (GTK_WIDGET (menubar));
pack_dir = gtk_menu_bar_get_pack_direction (menubar);
if (pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL)
{
if ((text_dir == GTK_TEXT_DIR_RTL) == (pack_dir == GTK_PACK_DIRECTION_LTR))
{
switch (direction)
{
case GTK_MENU_DIR_PREV:
direction = GTK_MENU_DIR_NEXT;
break;
case GTK_MENU_DIR_NEXT:
direction = GTK_MENU_DIR_PREV;
break;
default: ;
}
}
}
else
{
switch (direction)
{
case GTK_MENU_DIR_PARENT:
if ((text_dir == GTK_TEXT_DIR_LTR) == (pack_dir == GTK_PACK_DIRECTION_TTB))
direction = GTK_MENU_DIR_PREV;
else
direction = GTK_MENU_DIR_NEXT;
break;
case GTK_MENU_DIR_CHILD:
if ((text_dir == GTK_TEXT_DIR_LTR) == (pack_dir == GTK_PACK_DIRECTION_TTB))
direction = GTK_MENU_DIR_NEXT;
else
direction = GTK_MENU_DIR_PREV;
break;
case GTK_MENU_DIR_PREV:
if (text_dir == GTK_TEXT_DIR_RTL)
direction = GTK_MENU_DIR_CHILD;
else
direction = GTK_MENU_DIR_PARENT;
break;
case GTK_MENU_DIR_NEXT:
if (text_dir == GTK_TEXT_DIR_RTL)
direction = GTK_MENU_DIR_PARENT;
else
direction = GTK_MENU_DIR_CHILD;
break;
default: ;
}
}
GTK_MENU_SHELL_CLASS (gtk_menu_bar_parent_class)->move_current (menu_shell, direction);
}
/**
* gtk_menu_bar_get_pack_direction:
* @menubar: a #GtkMenuBar
*
* Retrieves the current pack direction of the menubar.
* See gtk_menu_bar_set_pack_direction().
*
* Returns: the pack direction
*
* Since: 2.8
*/
GtkPackDirection
gtk_menu_bar_get_pack_direction (GtkMenuBar *menubar)
{
g_return_val_if_fail (GTK_IS_MENU_BAR (menubar),
GTK_PACK_DIRECTION_LTR);
return menubar->priv->pack_direction;
}
/**
* gtk_menu_bar_set_pack_direction:
* @menubar: a #GtkMenuBar
* @pack_dir: a new #GtkPackDirection
*
* Sets how items should be packed inside a menubar.
*
* Since: 2.8
*/
void
gtk_menu_bar_set_pack_direction (GtkMenuBar *menubar,
GtkPackDirection pack_dir)
{
GtkMenuBarPrivate *priv;
GList *l;
g_return_if_fail (GTK_IS_MENU_BAR (menubar));
priv = menubar->priv;
if (priv->pack_direction != pack_dir)
{
priv->pack_direction = pack_dir;
gtk_widget_queue_resize (GTK_WIDGET (menubar));
for (l = GTK_MENU_SHELL (menubar)->priv->children; l; l = l->next)
gtk_widget_queue_resize (GTK_WIDGET (l->data));
g_object_notify (G_OBJECT (menubar), "pack-direction");
}
}
/**
* gtk_menu_bar_get_child_pack_direction:
* @menubar: a #GtkMenuBar
*
* Retrieves the current child pack direction of the menubar.
* See gtk_menu_bar_set_child_pack_direction().
*
* Returns: the child pack direction
*
* Since: 2.8
*/
GtkPackDirection
gtk_menu_bar_get_child_pack_direction (GtkMenuBar *menubar)
{
g_return_val_if_fail (GTK_IS_MENU_BAR (menubar),
GTK_PACK_DIRECTION_LTR);
return menubar->priv->child_pack_direction;
}
/**
* gtk_menu_bar_set_child_pack_direction:
* @menubar: a #GtkMenuBar
* @child_pack_dir: a new #GtkPackDirection
*
* Sets how widgets should be packed inside the children of a menubar.
*
* Since: 2.8
*/
void
gtk_menu_bar_set_child_pack_direction (GtkMenuBar *menubar,
GtkPackDirection child_pack_dir)
{
GtkMenuBarPrivate *priv;
GList *l;
g_return_if_fail (GTK_IS_MENU_BAR (menubar));
priv = menubar->priv;
if (priv->child_pack_direction != child_pack_dir)
{
priv->child_pack_direction = child_pack_dir;
gtk_widget_queue_resize (GTK_WIDGET (menubar));
for (l = GTK_MENU_SHELL (menubar)->priv->children; l; l = l->next)
gtk_widget_queue_resize (GTK_WIDGET (l->data));
g_object_notify (G_OBJECT (menubar), "child-pack-direction");
}
}
/**
* gtk_menu_bar_new_from_model:
* @model: a #GMenuModel
*
* Creates a new #GtkMenuBar and populates it with menu items
* and submenus according to @model.
*
* The created menu items are connected to actions found in the
* #GtkApplicationWindow to which the menu bar belongs - typically
* by means of being contained within the #GtkApplicationWindows
* widget hierarchy.
*
* Returns: a new #GtkMenuBar
*
* Since: 3.4
*/
GtkWidget *
gtk_menu_bar_new_from_model (GMenuModel *model)
{
GtkWidget *menubar;
g_return_val_if_fail (G_IS_MENU_MODEL (model), NULL);
menubar = gtk_menu_bar_new ();
gtk_menu_shell_bind_model (GTK_MENU_SHELL (menubar), model, NULL, FALSE);
return menubar;
}
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