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gtk2/gtk/gtkmenushell.c
Cody Russell 57223c9a05 Revert name change 
svn path=/trunk/; revision=20724
2008-07-01 22:57:50 +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 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. 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/.
*/
#define GTK_MENU_INTERNALS
#include "config.h"
#include "gdk/gdkkeysyms.h"
#include "gtkbindings.h"
#include "gtkkeyhash.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkmenu.h"
#include "gtkmenubar.h"
#include "gtkmenuitem.h"
#include "gtkmenushell.h"
#include "gtkmnemonichash.h"
#include "gtktearoffmenuitem.h"
#include "gtkwindow.h"
#include "gtkprivate.h"
#include "gtkintl.h"
#include "gtkalias.h"
#define MENU_SHELL_TIMEOUT 500
#define PACK_DIRECTION(m) \
(GTK_IS_MENU_BAR (m) \
? gtk_menu_bar_get_pack_direction (GTK_MENU_BAR (m)) \
: GTK_PACK_DIRECTION_LTR)
enum {
DEACTIVATE,
SELECTION_DONE,
MOVE_CURRENT,
ACTIVATE_CURRENT,
CANCEL,
CYCLE_FOCUS,
MOVE_SELECTED,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_TAKE_FOCUS
};
/* Terminology:
*
* A menu item can be "selected", this means that it is displayed
* in the prelight state, and if it has a submenu, that submenu
* will be popped up.
*
* A menu is "active" when it is visible onscreen and the user
* is selecting from it. A menubar is not active until the user
* clicks on one of its menuitems. When a menu is active,
* passing the mouse over a submenu will pop it up.
*
* menu_shell->active_menu_item, is however, not an "active"
* menu item (there is no such thing) but rather, the selected
* menu item in that MenuShell, if there is one.
*
* There is also is a concept of the current menu and a current
* menu item. The current menu item is the selected menu item
* that is furthest down in the heirarchy. (Every active menu_shell
* does not necessarily contain a selected menu item, but if
* it does, then menu_shell->parent_menu_shell must also contain
* a selected menu item. The current menu is the menu that
* contains the current menu_item. It will always have a GTK
* grab and receive all key presses.
*
*
* Action signals:
*
* ::move_current (GtkMenuDirection *dir)
* Moves the current menu item in direction 'dir':
*
* GTK_MENU_DIR_PARENT: To the parent menu shell
* GTK_MENU_DIR_CHILD: To the child menu shell (if this item has
* a submenu.
* GTK_MENU_DIR_NEXT/PREV: To the next or previous item
* in this menu.
*
* As a a bit of a hack to get movement between menus and
* menubars working, if submenu_placement is different for
* the menu and its MenuShell then the following apply:
*
* - For 'parent' the current menu is not just moved to
* the parent, but moved to the previous entry in the parent
* - For 'child', if there is no child, then current is
* moved to the next item in the parent.
*
* Note that the above explanation of ::move_current was written
* before menus and menubars had support for RTL flipping and
* different packing directions, and therefore only applies for
* when text direction and packing direction are both left-to-right.
*
* ::activate_current (GBoolean *force_hide)
* Activate the current item. If 'force_hide' is true, hide
* the current menu item always. Otherwise, only hide
* it if menu_item->klass->hide_on_activate is true.
*
* ::cancel ()
* Cancels the current selection
*/
#define GTK_MENU_SHELL_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_MENU_SHELL, GtkMenuShellPrivate))
typedef struct _GtkMenuShellPrivate GtkMenuShellPrivate;
struct _GtkMenuShellPrivate
{
GtkMnemonicHash *mnemonic_hash;
GtkKeyHash *key_hash;
guint take_focus : 1;
guint activated_submenu : 1;
};
static void gtk_menu_shell_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_menu_shell_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_menu_shell_realize (GtkWidget *widget);
static void gtk_menu_shell_finalize (GObject *object);
static gint gtk_menu_shell_button_press (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_menu_shell_button_release (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_menu_shell_key_press (GtkWidget *widget,
GdkEventKey *event);
static gint gtk_menu_shell_enter_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gint gtk_menu_shell_leave_notify (GtkWidget *widget,
GdkEventCrossing *event);
static void gtk_menu_shell_screen_changed (GtkWidget *widget,
GdkScreen *previous_screen);
static gboolean gtk_menu_shell_grab_broken (GtkWidget *widget,
GdkEventGrabBroken *event);
static void gtk_menu_shell_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_menu_shell_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_menu_shell_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static void gtk_menu_shell_real_insert (GtkMenuShell *menu_shell,
GtkWidget *child,
gint position);
static void gtk_real_menu_shell_deactivate (GtkMenuShell *menu_shell);
static gint gtk_menu_shell_is_item (GtkMenuShell *menu_shell,
GtkWidget *child);
static GtkWidget *gtk_menu_shell_get_item (GtkMenuShell *menu_shell,
GdkEvent *event);
static GType gtk_menu_shell_child_type (GtkContainer *container);
static void gtk_menu_shell_real_select_item (GtkMenuShell *menu_shell,
GtkWidget *menu_item);
static gboolean gtk_menu_shell_select_submenu_first (GtkMenuShell *menu_shell);
static void gtk_real_menu_shell_move_current (GtkMenuShell *menu_shell,
GtkMenuDirectionType direction);
static void gtk_real_menu_shell_activate_current (GtkMenuShell *menu_shell,
gboolean force_hide);
static void gtk_real_menu_shell_cancel (GtkMenuShell *menu_shell);
static void gtk_real_menu_shell_cycle_focus (GtkMenuShell *menu_shell,
GtkDirectionType dir);
static void gtk_menu_shell_reset_key_hash (GtkMenuShell *menu_shell);
static gboolean gtk_menu_shell_activate_mnemonic (GtkMenuShell *menu_shell,
GdkEventKey *event);
static gboolean gtk_menu_shell_real_move_selected (GtkMenuShell *menu_shell,
gint distance);
static guint menu_shell_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_ABSTRACT_TYPE (GtkMenuShell, gtk_menu_shell, GTK_TYPE_CONTAINER)
static void
gtk_menu_shell_class_init (GtkMenuShellClass *klass)
{
GObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
GtkBindingSet *binding_set;
object_class = (GObjectClass*) klass;
widget_class = (GtkWidgetClass*) klass;
container_class = (GtkContainerClass*) klass;
object_class->set_property = gtk_menu_shell_set_property;
object_class->get_property = gtk_menu_shell_get_property;
object_class->finalize = gtk_menu_shell_finalize;
widget_class->realize = gtk_menu_shell_realize;
widget_class->button_press_event = gtk_menu_shell_button_press;
widget_class->button_release_event = gtk_menu_shell_button_release;
widget_class->grab_broken_event = gtk_menu_shell_grab_broken;
widget_class->key_press_event = gtk_menu_shell_key_press;
widget_class->enter_notify_event = gtk_menu_shell_enter_notify;
widget_class->leave_notify_event = gtk_menu_shell_leave_notify;
widget_class->screen_changed = gtk_menu_shell_screen_changed;
container_class->add = gtk_menu_shell_add;
container_class->remove = gtk_menu_shell_remove;
container_class->forall = gtk_menu_shell_forall;
container_class->child_type = gtk_menu_shell_child_type;
klass->submenu_placement = GTK_TOP_BOTTOM;
klass->deactivate = gtk_real_menu_shell_deactivate;
klass->selection_done = NULL;
klass->move_current = gtk_real_menu_shell_move_current;
klass->activate_current = gtk_real_menu_shell_activate_current;
klass->cancel = gtk_real_menu_shell_cancel;
klass->select_item = gtk_menu_shell_real_select_item;
klass->insert = gtk_menu_shell_real_insert;
klass->move_selected = gtk_menu_shell_real_move_selected;
menu_shell_signals[DEACTIVATE] =
g_signal_new (I_("deactivate"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkMenuShellClass, deactivate),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
menu_shell_signals[SELECTION_DONE] =
g_signal_new (I_("selection-done"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkMenuShellClass, selection_done),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
menu_shell_signals[MOVE_CURRENT] =
g_signal_new (I_("move_current"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkMenuShellClass, move_current),
NULL, NULL,
_gtk_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GTK_TYPE_MENU_DIRECTION_TYPE);
menu_shell_signals[ACTIVATE_CURRENT] =
g_signal_new (I_("activate_current"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkMenuShellClass, activate_current),
NULL, NULL,
_gtk_marshal_VOID__BOOLEAN,
G_TYPE_NONE, 1,
G_TYPE_BOOLEAN);
menu_shell_signals[CANCEL] =
g_signal_new (I_("cancel"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkMenuShellClass, cancel),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
menu_shell_signals[CYCLE_FOCUS] =
_gtk_binding_signal_new (I_("cycle_focus"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gtk_real_menu_shell_cycle_focus),
NULL, NULL,
_gtk_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GTK_TYPE_DIRECTION_TYPE);
/**
* GtkMenuShell::move-selected:
* @menu_shell: the object on which the signal is emitted
* @distance: +1 to move to the next item, -1 to move to the previous
*
* The ::move-selected signal is emitted to move the selection to
* another item.
*
* Returns: %TRUE to stop the signal emission, %FALSE to continue
*
* Since: 2.12
*/
menu_shell_signals[MOVE_SELECTED] =
g_signal_new (I_("move_selected"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkMenuShellClass, move_selected),
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__INT,
G_TYPE_BOOLEAN, 1,
G_TYPE_INT);
binding_set = gtk_binding_set_by_class (klass);
gtk_binding_entry_add_signal (binding_set,
GDK_Escape, 0,
"cancel", 0);
gtk_binding_entry_add_signal (binding_set,
GDK_Return, 0,
"activate_current", 1,
G_TYPE_BOOLEAN,
TRUE);
gtk_binding_entry_add_signal (binding_set,
GDK_ISO_Enter, 0,
"activate_current", 1,
G_TYPE_BOOLEAN,
TRUE);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Enter, 0,
"activate_current", 1,
G_TYPE_BOOLEAN,
TRUE);
gtk_binding_entry_add_signal (binding_set,
GDK_space, 0,
"activate_current", 1,
G_TYPE_BOOLEAN,
FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Space, 0,
"activate_current", 1,
G_TYPE_BOOLEAN,
FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_F10, 0,
"cycle_focus", 1,
GTK_TYPE_DIRECTION_TYPE, GTK_DIR_TAB_FORWARD);
gtk_binding_entry_add_signal (binding_set,
GDK_F10, GDK_SHIFT_MASK,
"cycle_focus", 1,
GTK_TYPE_DIRECTION_TYPE, GTK_DIR_TAB_BACKWARD);
/**
* GtkMenuShell:take-focus:
*
* A boolean that determines whether the menu and its submenus grab the
* keyboard focus. See gtk_menu_shell_set_take_focus() and
* gtk_menu_shell_get_take_focus().
*
* Since: 2.8
**/
g_object_class_install_property (object_class,
PROP_TAKE_FOCUS,
g_param_spec_boolean ("take-focus",
P_("Take Focus"),
P_("A boolean that determines whether the menu grabs the keyboard focus"),
TRUE,
GTK_PARAM_READWRITE));
g_type_class_add_private (object_class, sizeof (GtkMenuShellPrivate));
}
static GType
gtk_menu_shell_child_type (GtkContainer *container)
{
return GTK_TYPE_MENU_ITEM;
}
static void
gtk_menu_shell_init (GtkMenuShell *menu_shell)
{
GtkMenuShellPrivate *priv = GTK_MENU_SHELL_GET_PRIVATE (menu_shell);
menu_shell->children = NULL;
menu_shell->active_menu_item = NULL;
menu_shell->parent_menu_shell = NULL;
menu_shell->active = FALSE;
menu_shell->have_grab = FALSE;
menu_shell->have_xgrab = FALSE;
menu_shell->button = 0;
menu_shell->activate_time = 0;
priv->mnemonic_hash = NULL;
priv->key_hash = NULL;
priv->take_focus = TRUE;
priv->activated_submenu = FALSE;
}
static void
gtk_menu_shell_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (object);
switch (prop_id)
{
case PROP_TAKE_FOCUS:
gtk_menu_shell_set_take_focus (menu_shell, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_menu_shell_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (object);
switch (prop_id)
{
case PROP_TAKE_FOCUS:
g_value_set_boolean (value, gtk_menu_shell_get_take_focus (menu_shell));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_menu_shell_finalize (GObject *object)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (object);
GtkMenuShellPrivate *priv = GTK_MENU_SHELL_GET_PRIVATE (menu_shell);
if (priv->mnemonic_hash)
_gtk_mnemonic_hash_free (priv->mnemonic_hash);
if (priv->key_hash)
_gtk_key_hash_free (priv->key_hash);
G_OBJECT_CLASS (gtk_menu_shell_parent_class)->finalize (object);
}
void
gtk_menu_shell_append (GtkMenuShell *menu_shell,
GtkWidget *child)
{
gtk_menu_shell_insert (menu_shell, child, -1);
}
void
gtk_menu_shell_prepend (GtkMenuShell *menu_shell,
GtkWidget *child)
{
gtk_menu_shell_insert (menu_shell, child, 0);
}
void
gtk_menu_shell_insert (GtkMenuShell *menu_shell,
GtkWidget *child,
gint position)
{
GtkMenuShellClass *class;
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (GTK_IS_MENU_ITEM (child));
class = GTK_MENU_SHELL_GET_CLASS (menu_shell);
if (class->insert)
class->insert (menu_shell, child, position);
}
static void
gtk_menu_shell_real_insert (GtkMenuShell *menu_shell,
GtkWidget *child,
gint position)
{
menu_shell->children = g_list_insert (menu_shell->children, child, position);
gtk_widget_set_parent (child, GTK_WIDGET (menu_shell));
}
void
gtk_menu_shell_deactivate (GtkMenuShell *menu_shell)
{
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_signal_emit (menu_shell, menu_shell_signals[DEACTIVATE], 0);
}
static void
gtk_menu_shell_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= (GDK_EXPOSURE_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_KEY_PRESS_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK);
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
}
void
_gtk_menu_shell_activate (GtkMenuShell *menu_shell)
{
if (!menu_shell->active)
{
gtk_grab_add (GTK_WIDGET (menu_shell));
menu_shell->have_grab = TRUE;
menu_shell->active = TRUE;
}
}
static gint
gtk_menu_shell_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkMenuShell *menu_shell;
GtkWidget *menu_item;
if (event->type != GDK_BUTTON_PRESS)
return FALSE;
menu_shell = GTK_MENU_SHELL (widget);
if (menu_shell->parent_menu_shell)
return gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
menu_item = gtk_menu_shell_get_item (menu_shell, (GdkEvent *)event);
if (menu_item && _gtk_menu_item_is_selectable (menu_item) &&
menu_item != GTK_MENU_SHELL (menu_item->parent)->active_menu_item)
{
/* select the menu item *before* activating the shell, so submenus
* which might be open are closed the friendly way. If we activate
* (and thus grab) this menu shell first, we might get grab_broken
* events which will close the entire menu hierarchy. Selecting the
* menu item also fixes up the state as if enter_notify() would
* have run before (which normally selects the item).
*/
if (GTK_MENU_SHELL_GET_CLASS (menu_item->parent)->submenu_placement != GTK_TOP_BOTTOM)
{
gtk_menu_shell_select_item (GTK_MENU_SHELL (menu_item->parent), menu_item);
}
}
if (!menu_shell->active || !menu_shell->button)
{
_gtk_menu_shell_activate (menu_shell);
menu_shell->button = event->button;
if (menu_item && _gtk_menu_item_is_selectable (menu_item) &&
menu_item->parent == widget &&
menu_item != menu_shell->active_menu_item)
{
if (GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement == GTK_TOP_BOTTOM)
{
menu_shell->activate_time = event->time;
gtk_menu_shell_select_item (menu_shell, menu_item);
}
}
}
else
{
widget = gtk_get_event_widget ((GdkEvent*) event);
if (widget == GTK_WIDGET (menu_shell))
{
gtk_menu_shell_deactivate (menu_shell);
g_signal_emit (menu_shell, menu_shell_signals[SELECTION_DONE], 0);
}
}
if (menu_item && _gtk_menu_item_is_selectable (menu_item) &&
GTK_MENU_ITEM (menu_item)->submenu != NULL &&
!GTK_WIDGET_VISIBLE (GTK_MENU_ITEM (menu_item)->submenu))
{
GtkMenuShellPrivate *priv;
_gtk_menu_item_popup_submenu (menu_item, FALSE);
priv = GTK_MENU_SHELL_GET_PRIVATE (menu_item->parent);
priv->activated_submenu = TRUE;
}
return TRUE;
}
static gboolean
gtk_menu_shell_grab_broken (GtkWidget *widget,
GdkEventGrabBroken *event)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget);
if (menu_shell->have_xgrab && event->grab_window == NULL)
{
/* Unset the active menu item so gtk_menu_popdown() doesn't see it.
*/
gtk_menu_shell_deselect (menu_shell);
gtk_menu_shell_deactivate (menu_shell);
g_signal_emit (menu_shell, menu_shell_signals[SELECTION_DONE], 0);
}
return TRUE;
}
static gint
gtk_menu_shell_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget);
GtkMenuShellPrivate *priv = GTK_MENU_SHELL_GET_PRIVATE (widget);
if (menu_shell->active)
{
GtkWidget *menu_item;
gboolean deactivate = TRUE;
if (menu_shell->button && (event->button != menu_shell->button))
{
menu_shell->button = 0;
if (menu_shell->parent_menu_shell)
return gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
}
menu_shell->button = 0;
menu_item = gtk_menu_shell_get_item (menu_shell, (GdkEvent*) event);
if ((event->time - menu_shell->activate_time) > MENU_SHELL_TIMEOUT)
{
if (menu_item && (menu_shell->active_menu_item == menu_item) &&
_gtk_menu_item_is_selectable (menu_item))
{
GtkWidget *submenu = GTK_MENU_ITEM (menu_item)->submenu;
if (submenu == NULL)
{
gtk_menu_shell_activate_item (menu_shell, menu_item, TRUE);
deactivate = FALSE;
}
else if (GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement != GTK_TOP_BOTTOM ||
priv->activated_submenu)
{
gint popdown_delay;
GTimeVal *popup_time;
gint64 usec_since_popup = 0;
g_object_get (gtk_widget_get_settings (widget),
"gtk-menu-popdown-delay", &popdown_delay,
NULL);
popup_time = g_object_get_data (G_OBJECT (submenu),
"gtk-menu-exact-popup-time");
if (popup_time)
{
GTimeVal current_time;
g_get_current_time (&current_time);
usec_since_popup = ((gint64) current_time.tv_sec * 1000 * 1000 +
(gint64) current_time.tv_usec -
(gint64) popup_time->tv_sec * 1000 * 1000 -
(gint64) popup_time->tv_usec);
g_object_set_data (G_OBJECT (submenu),
"gtk-menu-exact-popup-time", NULL);
}
/* only close the submenu on click if we opened the
* menu explicitely (usec_since_popup == 0) or
* enough time has passed since it was opened by
* GtkMenuItem's timeout (usec_since_popup > delay).
*/
if (!priv->activated_submenu &&
(usec_since_popup == 0 ||
usec_since_popup > popdown_delay * 1000))
{
_gtk_menu_item_popdown_submenu (menu_item);
}
else
{
gtk_menu_item_select (GTK_MENU_ITEM (menu_item));
}
deactivate = FALSE;
}
}
else if (menu_item &&
!_gtk_menu_item_is_selectable (menu_item) &&
GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement != GTK_TOP_BOTTOM)
{
deactivate = FALSE;
}
else if (menu_shell->parent_menu_shell)
{
menu_shell->active = TRUE;
gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
deactivate = FALSE;
}
/* If we ended up on an item with a submenu, leave the menu up.
*/
if (menu_item && (menu_shell->active_menu_item == menu_item) &&
GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement != GTK_TOP_BOTTOM)
{
deactivate = FALSE;
}
}
else /* a very fast press-release */
{
/* We only ever want to prevent deactivation on the first
* press/release. Setting the time to zero is a bit of a
* hack, since we could be being triggered in the first
* few fractions of a second after a server time wraparound.
* the chances of that happening are ~1/10^6, without
* serious harm if we lose.
*/
menu_shell->activate_time = 0;
deactivate = FALSE;
}
if (deactivate)
{
gtk_menu_shell_deactivate (menu_shell);
g_signal_emit (menu_shell, menu_shell_signals[SELECTION_DONE], 0);
}
priv->activated_submenu = FALSE;
}
return TRUE;
}
static gint
gtk_menu_shell_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget);
gboolean enable_mnemonics;
if (!menu_shell->active_menu_item && menu_shell->parent_menu_shell)
return gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent *)event);
if (gtk_bindings_activate_event (GTK_OBJECT (widget), event))
return TRUE;
g_object_get (gtk_widget_get_settings (widget),
"gtk-enable-mnemonics", &enable_mnemonics,
NULL);
if (enable_mnemonics)
return gtk_menu_shell_activate_mnemonic (menu_shell, event);
return FALSE;
}
static gint
gtk_menu_shell_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget);
if (menu_shell->active)
{
GtkWidget *menu_item;
menu_item = gtk_get_event_widget ((GdkEvent*) event);
if (!menu_item ||
(GTK_IS_MENU_ITEM (menu_item) &&
!_gtk_menu_item_is_selectable (menu_item)))
return TRUE;
if (menu_item->parent == widget &&
GTK_IS_MENU_ITEM (menu_item))
{
if (menu_shell->ignore_enter)
return TRUE;
if (event->detail != GDK_NOTIFY_INFERIOR)
{
if (GTK_WIDGET_STATE (menu_item) != GTK_STATE_PRELIGHT)
gtk_menu_shell_select_item (menu_shell, menu_item);
/* If any mouse button is down, and there is a submenu
* that is not yet visible, activate it. It's sufficient
* to check for any button's mask (not only the one
* matching menu_shell->button), because there is no
* situation a mouse button could be pressed while
* entering a menu item where we wouldn't want to show
* its submenu.
*/
if ((event->state & (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK)) &&
GTK_MENU_ITEM (menu_item)->submenu != NULL)
{
GtkMenuShellPrivate *priv;
priv = GTK_MENU_SHELL_GET_PRIVATE (menu_item->parent);
priv->activated_submenu = TRUE;
if (!GTK_WIDGET_VISIBLE (GTK_MENU_ITEM (menu_item)->submenu))
{
gboolean touchscreen_mode;
g_object_get (gtk_widget_get_settings (widget),
"gtk-touchscreen-mode", &touchscreen_mode,
NULL);
if (touchscreen_mode)
_gtk_menu_item_popup_submenu (menu_item, TRUE);
}
}
}
}
else if (menu_shell->parent_menu_shell)
{
gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
}
}
return TRUE;
}
static gint
gtk_menu_shell_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
if (GTK_WIDGET_VISIBLE (widget))
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget);
GtkWidget *event_widget = gtk_get_event_widget ((GdkEvent*) event);
GtkMenuItem *menu_item;
if (!event_widget || !GTK_IS_MENU_ITEM (event_widget))
return TRUE;
menu_item = GTK_MENU_ITEM (event_widget);
if (!_gtk_menu_item_is_selectable (event_widget))
return TRUE;
if ((menu_shell->active_menu_item == event_widget) &&
(menu_item->submenu == NULL))
{
if ((event->detail != GDK_NOTIFY_INFERIOR) &&
(GTK_WIDGET_STATE (menu_item) != GTK_STATE_NORMAL))
{
gtk_menu_shell_deselect (menu_shell);
}
}
else if (menu_shell->parent_menu_shell)
{
gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
}
}
return TRUE;
}
static void
gtk_menu_shell_screen_changed (GtkWidget *widget,
GdkScreen *previous_screen)
{
gtk_menu_shell_reset_key_hash (GTK_MENU_SHELL (widget));
}
static void
gtk_menu_shell_add (GtkContainer *container,
GtkWidget *widget)
{
gtk_menu_shell_append (GTK_MENU_SHELL (container), widget);
}
static void
gtk_menu_shell_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (container);
gint was_visible;
was_visible = GTK_WIDGET_VISIBLE (widget);
menu_shell->children = g_list_remove (menu_shell->children, widget);
if (widget == menu_shell->active_menu_item)
{
gtk_item_deselect (GTK_ITEM (menu_shell->active_menu_item));
menu_shell->active_menu_item = NULL;
}
gtk_widget_unparent (widget);
/* queue resize regardless of GTK_WIDGET_VISIBLE (container),
* since that's what is needed by toplevels.
*/
if (was_visible)
gtk_widget_queue_resize (GTK_WIDGET (container));
}
static void
gtk_menu_shell_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (container);
GtkWidget *child;
GList *children;
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
(* callback) (child, callback_data);
}
}
static void
gtk_real_menu_shell_deactivate (GtkMenuShell *menu_shell)
{
if (menu_shell->active)
{
menu_shell->button = 0;
menu_shell->active = FALSE;
menu_shell->activate_time = 0;
if (menu_shell->active_menu_item)
{
gtk_menu_item_deselect (GTK_MENU_ITEM (menu_shell->active_menu_item));
menu_shell->active_menu_item = NULL;
}
if (menu_shell->have_grab)
{
menu_shell->have_grab = FALSE;
gtk_grab_remove (GTK_WIDGET (menu_shell));
}
if (menu_shell->have_xgrab)
{
GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (menu_shell));
menu_shell->have_xgrab = FALSE;
gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
}
}
}
static gint
gtk_menu_shell_is_item (GtkMenuShell *menu_shell,
GtkWidget *child)
{
GtkWidget *parent;
g_return_val_if_fail (GTK_IS_MENU_SHELL (menu_shell), FALSE);
g_return_val_if_fail (child != NULL, FALSE);
parent = child->parent;
while (GTK_IS_MENU_SHELL (parent))
{
if (parent == (GtkWidget*) menu_shell)
return TRUE;
parent = GTK_MENU_SHELL (parent)->parent_menu_shell;
}
return FALSE;
}
static GtkWidget*
gtk_menu_shell_get_item (GtkMenuShell *menu_shell,
GdkEvent *event)
{
GtkWidget *menu_item;
menu_item = gtk_get_event_widget ((GdkEvent*) event);
while (menu_item && !GTK_IS_MENU_ITEM (menu_item))
menu_item = menu_item->parent;
if (menu_item && gtk_menu_shell_is_item (menu_shell, menu_item))
return menu_item;
else
return NULL;
}
/* Handlers for action signals */
void
gtk_menu_shell_select_item (GtkMenuShell *menu_shell,
GtkWidget *menu_item)
{
GtkMenuShellClass *class;
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
class = GTK_MENU_SHELL_GET_CLASS (menu_shell);
if (class->select_item &&
!(menu_shell->active &&
menu_shell->active_menu_item == menu_item))
class->select_item (menu_shell, menu_item);
}
void _gtk_menu_item_set_placement (GtkMenuItem *menu_item,
GtkSubmenuPlacement placement);
static void
gtk_menu_shell_real_select_item (GtkMenuShell *menu_shell,
GtkWidget *menu_item)
{
GtkPackDirection pack_dir = PACK_DIRECTION (menu_shell);
gtk_menu_shell_deselect (menu_shell);
if (!_gtk_menu_item_is_selectable (menu_item))
return;
menu_shell->active_menu_item = menu_item;
if (pack_dir == GTK_PACK_DIRECTION_TTB || pack_dir == GTK_PACK_DIRECTION_BTT)
_gtk_menu_item_set_placement (GTK_MENU_ITEM (menu_shell->active_menu_item),
GTK_LEFT_RIGHT);
else
_gtk_menu_item_set_placement (GTK_MENU_ITEM (menu_shell->active_menu_item),
GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement);
gtk_menu_item_select (GTK_MENU_ITEM (menu_shell->active_menu_item));
/* This allows the bizarre radio buttons-with-submenus-display-history
* behavior
*/
if (GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu)
gtk_widget_activate (menu_shell->active_menu_item);
}
void
gtk_menu_shell_deselect (GtkMenuShell *menu_shell)
{
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
if (menu_shell->active_menu_item)
{
gtk_menu_item_deselect (GTK_MENU_ITEM (menu_shell->active_menu_item));
menu_shell->active_menu_item = NULL;
}
}
void
gtk_menu_shell_activate_item (GtkMenuShell *menu_shell,
GtkWidget *menu_item,
gboolean force_deactivate)
{
GSList *slist, *shells = NULL;
gboolean deactivate = force_deactivate;
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
if (!deactivate)
deactivate = GTK_MENU_ITEM_GET_CLASS (menu_item)->hide_on_activate;
g_object_ref (menu_shell);
g_object_ref (menu_item);
if (deactivate)
{
GtkMenuShell *parent_menu_shell = menu_shell;
do
{
g_object_ref (parent_menu_shell);
shells = g_slist_prepend (shells, parent_menu_shell);
parent_menu_shell = (GtkMenuShell*) parent_menu_shell->parent_menu_shell;
}
while (parent_menu_shell);
shells = g_slist_reverse (shells);
gtk_menu_shell_deactivate (menu_shell);
/* flush the x-queue, so any grabs are removed and
* the menu is actually taken down
*/
gdk_display_sync (gtk_widget_get_display (menu_item));
}
gtk_widget_activate (menu_item);
for (slist = shells; slist; slist = slist->next)
{
g_signal_emit (slist->data, menu_shell_signals[SELECTION_DONE], 0);
g_object_unref (slist->data);
}
g_slist_free (shells);
g_object_unref (menu_shell);
g_object_unref (menu_item);
}
/* Distance should be +/- 1 */
static gboolean
gtk_menu_shell_real_move_selected (GtkMenuShell *menu_shell,
gint distance)
{
if (menu_shell->active_menu_item)
{
GList *node = g_list_find (menu_shell->children,
menu_shell->active_menu_item);
GList *start_node = node;
gboolean wrap_around;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_shell)),
"gtk-keynav-wrap-around", &wrap_around,
NULL);
if (distance > 0)
{
node = node->next;
while (node != start_node &&
(!node || !_gtk_menu_item_is_selectable (node->data)))
{
if (node)
node = node->next;
else if (wrap_around)
node = menu_shell->children;
else
{
gtk_widget_error_bell (GTK_WIDGET (menu_shell));
break;
}
}
}
else
{
node = node->prev;
while (node != start_node &&
(!node || !_gtk_menu_item_is_selectable (node->data)))
{
if (node)
node = node->prev;
else if (wrap_around)
node = g_list_last (menu_shell->children);
else
{
gtk_widget_error_bell (GTK_WIDGET (menu_shell));
break;
}
}
}
if (node)
gtk_menu_shell_select_item (menu_shell, node->data);
}
return TRUE;
}
/* Distance should be +/- 1 */
static void
gtk_menu_shell_move_selected (GtkMenuShell *menu_shell,
gint distance)
{
gboolean handled = FALSE;
g_signal_emit (menu_shell, menu_shell_signals[MOVE_SELECTED], 0,
distance, &handled);
}
/**
* gtk_menu_shell_select_first:
* @menu_shell: a #GtkMenuShell
* @search_sensitive: if %TRUE, search for the first selectable
* menu item, otherwise select nothing if
* the first item isn't sensitive. This
* should be %FALSE if the menu is being
* popped up initially.
*
* Select the first visible or selectable child of the menu shell;
* don't select tearoff items unless the only item is a tearoff
* item.
*
* Since: 2.2
**/
void
gtk_menu_shell_select_first (GtkMenuShell *menu_shell,
gboolean search_sensitive)
{
GtkWidget *to_select = NULL;
GList *tmp_list;
tmp_list = menu_shell->children;
while (tmp_list)
{
GtkWidget *child = tmp_list->data;
if ((!search_sensitive && GTK_WIDGET_VISIBLE (child)) ||
_gtk_menu_item_is_selectable (child))
{
to_select = child;
if (!GTK_IS_TEAROFF_MENU_ITEM (child))
break;
}
tmp_list = tmp_list->next;
}
if (to_select)
gtk_menu_shell_select_item (menu_shell, to_select);
}
void
_gtk_menu_shell_select_last (GtkMenuShell *menu_shell,
gboolean search_sensitive)
{
GtkWidget *to_select = NULL;
GList *tmp_list;
tmp_list = g_list_last (menu_shell->children);
while (tmp_list)
{
GtkWidget *child = tmp_list->data;
if ((!search_sensitive && GTK_WIDGET_VISIBLE (child)) ||
_gtk_menu_item_is_selectable (child))
{
to_select = child;
if (!GTK_IS_TEAROFF_MENU_ITEM (child))
break;
}
tmp_list = tmp_list->prev;
}
if (to_select)
gtk_menu_shell_select_item (menu_shell, to_select);
}
static gboolean
gtk_menu_shell_select_submenu_first (GtkMenuShell *menu_shell)
{
GtkMenuItem *menu_item;
if (menu_shell->active_menu_item == NULL)
return FALSE;
menu_item = GTK_MENU_ITEM (menu_shell->active_menu_item);
if (menu_item->submenu)
{
_gtk_menu_item_popup_submenu (GTK_WIDGET (menu_item), FALSE);
gtk_menu_shell_select_first (GTK_MENU_SHELL (menu_item->submenu), TRUE);
if (GTK_MENU_SHELL (menu_item->submenu)->active_menu_item)
return TRUE;
}
return FALSE;
}
static void
gtk_real_menu_shell_move_current (GtkMenuShell *menu_shell,
GtkMenuDirectionType direction)
{
GtkMenuShell *parent_menu_shell = NULL;
gboolean had_selection;
gboolean touchscreen_mode;
had_selection = menu_shell->active_menu_item != NULL;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_shell)),
"gtk-touchscreen-mode", &touchscreen_mode,
NULL);
if (menu_shell->parent_menu_shell)
parent_menu_shell = GTK_MENU_SHELL (menu_shell->parent_menu_shell);
switch (direction)
{
case GTK_MENU_DIR_PARENT:
if (touchscreen_mode &&
menu_shell->active_menu_item &&
GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu &&
GTK_WIDGET_VISIBLE (GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu))
{
/* if we are on a menu item that has an open submenu but the
* focus is not in that submenu (e.g. because it's empty or
* has only insensitive items), close that submenu instead
* of running into the code below which would close *this*
* menu.
*/
_gtk_menu_item_popdown_submenu (menu_shell->active_menu_item);
}
else if (parent_menu_shell)
{
if (touchscreen_mode)
{
/* close menu when returning from submenu. */
_gtk_menu_item_popdown_submenu (GTK_MENU (menu_shell)->parent_menu_item);
break;
}
if (GTK_MENU_SHELL_GET_CLASS (parent_menu_shell)->submenu_placement ==
GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement)
gtk_menu_shell_deselect (menu_shell);
else
{
if (PACK_DIRECTION (parent_menu_shell) == GTK_PACK_DIRECTION_LTR)
gtk_menu_shell_move_selected (parent_menu_shell, -1);
else
gtk_menu_shell_move_selected (parent_menu_shell, 1);
gtk_menu_shell_select_submenu_first (parent_menu_shell);
}
}
/* If there is no parent and the submenu is in the opposite direction
* to the menu, then make the PARENT direction wrap around to
* the bottom of the submenu.
*/
else if (menu_shell->active_menu_item &&
_gtk_menu_item_is_selectable (menu_shell->active_menu_item) &&
GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu)
{
GtkMenuShell *submenu = GTK_MENU_SHELL (GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu);
if (GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement !=
GTK_MENU_SHELL_GET_CLASS (submenu)->submenu_placement)
_gtk_menu_shell_select_last (submenu, TRUE);
}
break;
case GTK_MENU_DIR_CHILD:
if (menu_shell->active_menu_item &&
_gtk_menu_item_is_selectable (menu_shell->active_menu_item) &&
GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu)
{
if (gtk_menu_shell_select_submenu_first (menu_shell))
break;
}
/* Try to find a menu running the opposite direction */
while (parent_menu_shell &&
(GTK_MENU_SHELL_GET_CLASS (parent_menu_shell)->submenu_placement ==
GTK_MENU_SHELL_GET_CLASS (menu_shell)->submenu_placement))
{
parent_menu_shell = GTK_MENU_SHELL (parent_menu_shell->parent_menu_shell);
}
if (parent_menu_shell)
{
if (PACK_DIRECTION (parent_menu_shell) == GTK_PACK_DIRECTION_LTR)
gtk_menu_shell_move_selected (parent_menu_shell, 1);
else
gtk_menu_shell_move_selected (parent_menu_shell, -1);
gtk_menu_shell_select_submenu_first (parent_menu_shell);
}
break;
case GTK_MENU_DIR_PREV:
gtk_menu_shell_move_selected (menu_shell, -1);
if (!had_selection &&
!menu_shell->active_menu_item &&
menu_shell->children)
_gtk_menu_shell_select_last (menu_shell, TRUE);
break;
case GTK_MENU_DIR_NEXT:
gtk_menu_shell_move_selected (menu_shell, 1);
if (!had_selection &&
!menu_shell->active_menu_item &&
menu_shell->children)
gtk_menu_shell_select_first (menu_shell, TRUE);
break;
}
}
static void
gtk_real_menu_shell_activate_current (GtkMenuShell *menu_shell,
gboolean force_hide)
{
if (menu_shell->active_menu_item &&
_gtk_menu_item_is_selectable (menu_shell->active_menu_item))
{
if (GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu == NULL)
gtk_menu_shell_activate_item (menu_shell,
menu_shell->active_menu_item,
force_hide);
else
_gtk_menu_item_popup_submenu (menu_shell->active_menu_item, FALSE);
}
}
static void
gtk_real_menu_shell_cancel (GtkMenuShell *menu_shell)
{
/* Unset the active menu item so gtk_menu_popdown() doesn't see it.
*/
gtk_menu_shell_deselect (menu_shell);
gtk_menu_shell_deactivate (menu_shell);
g_signal_emit (menu_shell, menu_shell_signals[SELECTION_DONE], 0);
}
static void
gtk_real_menu_shell_cycle_focus (GtkMenuShell *menu_shell,
GtkDirectionType dir)
{
while (menu_shell && !GTK_IS_MENU_BAR (menu_shell))
{
if (menu_shell->parent_menu_shell)
menu_shell = GTK_MENU_SHELL (menu_shell->parent_menu_shell);
else
menu_shell = NULL;
}
if (menu_shell)
_gtk_menu_bar_cycle_focus (GTK_MENU_BAR (menu_shell), dir);
}
gint
_gtk_menu_shell_get_popup_delay (GtkMenuShell *menu_shell)
{
GtkMenuShellClass *klass = GTK_MENU_SHELL_GET_CLASS (menu_shell);
if (klass->get_popup_delay)
{
return klass->get_popup_delay (menu_shell);
}
else
{
gint popup_delay;
GtkWidget *widget = GTK_WIDGET (menu_shell);
g_object_get (gtk_widget_get_settings (widget),
"gtk-menu-popup-delay", &popup_delay,
NULL);
return popup_delay;
}
}
/**
* gtk_menu_shell_cancel:
* @menu_shell: a #GtkMenuShell
*
* Cancels the selection within the menu shell.
*
* Since: 2.4
*/
void
gtk_menu_shell_cancel (GtkMenuShell *menu_shell)
{
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_signal_emit (menu_shell, menu_shell_signals[CANCEL], 0);
}
static GtkMnemonicHash *
gtk_menu_shell_get_mnemonic_hash (GtkMenuShell *menu_shell,
gboolean create)
{
GtkMenuShellPrivate *private = GTK_MENU_SHELL_GET_PRIVATE (menu_shell);
if (!private->mnemonic_hash && create)
private->mnemonic_hash = _gtk_mnemonic_hash_new ();
return private->mnemonic_hash;
}
static void
menu_shell_add_mnemonic_foreach (guint keyval,
GSList *targets,
gpointer data)
{
GtkKeyHash *key_hash = data;
_gtk_key_hash_add_entry (key_hash, keyval, 0, GUINT_TO_POINTER (keyval));
}
static GtkKeyHash *
gtk_menu_shell_get_key_hash (GtkMenuShell *menu_shell,
gboolean create)
{
GtkMenuShellPrivate *private = GTK_MENU_SHELL_GET_PRIVATE (menu_shell);
GtkWidget *widget = GTK_WIDGET (menu_shell);
if (!private->key_hash && create && gtk_widget_has_screen (widget))
{
GtkMnemonicHash *mnemonic_hash = gtk_menu_shell_get_mnemonic_hash (menu_shell, FALSE);
GdkScreen *screen = gtk_widget_get_screen (widget);
GdkKeymap *keymap = gdk_keymap_get_for_display (gdk_screen_get_display (screen));
if (!mnemonic_hash)
return NULL;
private->key_hash = _gtk_key_hash_new (keymap, NULL);
_gtk_mnemonic_hash_foreach (mnemonic_hash,
menu_shell_add_mnemonic_foreach,
private->key_hash);
}
return private->key_hash;
}
static void
gtk_menu_shell_reset_key_hash (GtkMenuShell *menu_shell)
{
GtkMenuShellPrivate *private = GTK_MENU_SHELL_GET_PRIVATE (menu_shell);
if (private->key_hash)
{
_gtk_key_hash_free (private->key_hash);
private->key_hash = NULL;
}
}
static gboolean
gtk_menu_shell_activate_mnemonic (GtkMenuShell *menu_shell,
GdkEventKey *event)
{
GtkMnemonicHash *mnemonic_hash;
GtkKeyHash *key_hash;
GSList *entries;
gboolean result = FALSE;
mnemonic_hash = gtk_menu_shell_get_mnemonic_hash (menu_shell, FALSE);
if (!mnemonic_hash)
return FALSE;
key_hash = gtk_menu_shell_get_key_hash (menu_shell, TRUE);
if (!key_hash)
return FALSE;
entries = _gtk_key_hash_lookup (key_hash,
event->hardware_keycode,
event->state,
gtk_accelerator_get_default_mod_mask (),
event->group);
if (entries)
result = _gtk_mnemonic_hash_activate (mnemonic_hash,
GPOINTER_TO_UINT (entries->data));
return result;
}
void
_gtk_menu_shell_add_mnemonic (GtkMenuShell *menu_shell,
guint keyval,
GtkWidget *target)
{
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (GTK_IS_WIDGET (target));
_gtk_mnemonic_hash_add (gtk_menu_shell_get_mnemonic_hash (menu_shell, TRUE),
keyval, target);
gtk_menu_shell_reset_key_hash (menu_shell);
}
void
_gtk_menu_shell_remove_mnemonic (GtkMenuShell *menu_shell,
guint keyval,
GtkWidget *target)
{
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
g_return_if_fail (GTK_IS_WIDGET (target));
_gtk_mnemonic_hash_remove (gtk_menu_shell_get_mnemonic_hash (menu_shell, TRUE),
keyval, target);
gtk_menu_shell_reset_key_hash (menu_shell);
}
/**
* gtk_menu_shell_get_take_focus:
* @menu_shell: a #GtkMenuShell
*
* Returns %TRUE if the menu shell will take the keyboard focus on popup.
*
* Returns: %TRUE if the menu shell will take the keyboard focus on popup.
*
* Since: 2.8
**/
gboolean
gtk_menu_shell_get_take_focus (GtkMenuShell *menu_shell)
{
GtkMenuShellPrivate *priv;
g_return_val_if_fail (GTK_IS_MENU_SHELL (menu_shell), FALSE);
priv = GTK_MENU_SHELL_GET_PRIVATE (menu_shell);
return priv->take_focus;
}
/**
* gtk_menu_shell_set_take_focus:
* @menu_shell: a #GtkMenuShell
* @take_focus: %TRUE if the menu shell should take the keyboard focus on popup.
*
* If @take_focus is %TRUE (the default) the menu shell will take the keyboard
* focus so that it will receive all keyboard events which is needed to enable
* keyboard navigation in menus.
*
* Setting @take_focus to %FALSE is useful only for special applications
* like virtual keyboard implementations which should not take keyboard
* focus.
*
* The @take_focus state of a menu or menu bar is automatically propagated
* to submenus whenever a submenu is popped up, so you don't have to worry
* about recursively setting it for your entire menu hierarchy. Only when
* programmatically picking a submenu and popping it up manually, the
* @take_focus property of the submenu needs to be set explicitely.
*
* Note that setting it to %FALSE has side-effects:
*
* If the focus is in some other app, it keeps the focus and keynav in
* the menu doesn't work. Consequently, keynav on the menu will only
* work if the focus is on some toplevel owned by the onscreen keyboard.
*
* To avoid confusing the user, menus with @take_focus set to %FALSE
* should not display mnemonics or accelerators, since it cannot be
* guaranteed that they will work.
*
* See also gdk_keyboard_grab()
*
* Since: 2.8
**/
void
gtk_menu_shell_set_take_focus (GtkMenuShell *menu_shell,
gboolean take_focus)
{
GtkMenuShellPrivate *priv;
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
priv = GTK_MENU_SHELL_GET_PRIVATE (menu_shell);
if (priv->take_focus != take_focus)
{
priv->take_focus = take_focus;
g_object_notify (G_OBJECT (menu_shell), "take-focus");
}
}
#define __GTK_MENU_SHELL_C__
#include "gtkaliasdef.c"
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