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gtk2/gtk/gtkmenuitem.c
Timm Bäder 58aa93be41 menu: Avoid an invalid read
2018-04-06 08:24:19 +02:00

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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, 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/.
*/
#include "config.h"
#include <string.h>
#include "gtkaccellabel.h"
#include "gtklabel.h"
#include "gtkcontainerprivate.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkmenuprivate.h"
#include "gtkmenushellprivate.h"
#include "gtkmenuitemprivate.h"
#include "gtkmenubar.h"
#include "gtkmenuprivate.h"
#include "gtkseparatormenuitem.h"
#include "gtkprivate.h"
#include "gtkbuildable.h"
#include "gtkwidgetprivate.h"
#include "gtkintl.h"
#include "gtksettings.h"
#include "gtktypebuiltins.h"
#include "a11y/gtkmenuitemaccessible.h"
#include "gtkstylecontextprivate.h"
#include "gtkcssstylepropertyprivate.h"
#include "gtkiconprivate.h"
#define MENU_POPUP_DELAY 225
/**
* SECTION:gtkmenuitem
* @Short_description: The widget used for item in menus
* @Title: GtkMenuItem
* @See_also: #GtkBin, #GtkMenuShell
*
* The #GtkMenuItem widget and the derived widgets are the only valid
* children for menus. Their function is to correctly handle highlighting,
* alignment, events and submenus.
*
* As a GtkMenuItem derives from #GtkBin it can hold any valid child widget,
* although only a few are really useful.
*
* By default, a GtkMenuItem sets a #GtkAccelLabel as its child.
* GtkMenuItem has direct functions to set the label and its mnemonic.
* For more advanced label settings, you can fetch the child widget from the GtkBin.
*
* An example for setting markup and accelerator on a MenuItem:
* |[<!-- language="C" -->
* GtkWidget *menu_item = gtk_menu_item_new_with_label ("Example Menu Item");
*
* GtkWidget *child = gtk_bin_get_child (GTK_BIN (menu_item));
* gtk_label_set_markup (GTK_LABEL (child), "<i>new label</i> with <b>markup</b>");
* gtk_accel_label_set_accel (GTK_ACCEL_LABEL (child), GDK_KEY_1, 0);
* ]|
*
* # GtkMenuItem as GtkBuildable
*
* The GtkMenuItem implementation of the #GtkBuildable interface supports
* adding a submenu by specifying “submenu” as the “type” attribute of
* a <child> element.
*
* An example of UI definition fragment with submenus:
* |[
* <object class="GtkMenuItem">
* <child type="submenu">
* <object class="GtkMenu"/>
* </child>
* </object>
* ]|
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* menuitem
* ├── <child>
* ╰── [arrow.right]
* ]|
*
* GtkMenuItem has a single CSS node with name menuitem. If the menuitem
* has a submenu, it gets another CSS node with name arrow, which has
* the .left or .right style class.
*/
enum {
ACTIVATE,
ACTIVATE_ITEM,
TOGGLE_SIZE_REQUEST,
TOGGLE_SIZE_ALLOCATE,
SELECT,
DESELECT,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_SUBMENU,
PROP_ACCEL_PATH,
PROP_LABEL,
PROP_USE_UNDERLINE,
LAST_PROP,
PROP_ACTION_NAME,
PROP_ACTION_TARGET
};
static void gtk_menu_item_dispose (GObject *object);
static void gtk_menu_item_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_menu_item_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_menu_item_destroy (GtkWidget *widget);
static void gtk_menu_item_enter (GtkEventController *controller,
double x,
double y,
gpointer user_data);
static void gtk_menu_item_leave (GtkEventController *controller,
gpointer user_data);
static void gtk_menu_item_parent_cb (GObject *object,
GParamSpec *pspec,
gpointer user_data);
static void gtk_menu_item_direction_changed (GtkWidget *widget,
GtkTextDirection previous_dir);
static void gtk_real_menu_item_select (GtkMenuItem *item);
static void gtk_real_menu_item_deselect (GtkMenuItem *item);
static void gtk_real_menu_item_activate (GtkMenuItem *item);
static void gtk_real_menu_item_activate_item (GtkMenuItem *item);
static void gtk_real_menu_item_toggle_size_request (GtkMenuItem *menu_item,
gint *requisition);
static void gtk_real_menu_item_toggle_size_allocate (GtkMenuItem *menu_item,
gint allocation);
static gboolean gtk_menu_item_mnemonic_activate (GtkWidget *widget,
gboolean group_cycling);
static void gtk_menu_item_ensure_label (GtkMenuItem *menu_item);
static gint gtk_menu_item_popup_timeout (gpointer data);
static void gtk_menu_item_forall (GtkContainer *container,
GtkCallback callback,
gpointer callback_data);
static gboolean gtk_menu_item_can_activate_accel (GtkWidget *widget,
guint signal_id);
static void gtk_real_menu_item_set_label (GtkMenuItem *menu_item,
const gchar *label);
static const gchar * gtk_real_menu_item_get_label (GtkMenuItem *menu_item);
static void gtk_menu_item_buildable_interface_init (GtkBuildableIface *iface);
static void gtk_menu_item_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type);
static void gtk_menu_item_buildable_custom_finished(GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer user_data);
static void gtk_menu_item_actionable_interface_init (GtkActionableInterface *iface);
static guint menu_item_signals[LAST_SIGNAL] = { 0 };
static GParamSpec *menu_item_props[LAST_PROP];
static GtkBuildableIface *parent_buildable_iface;
G_DEFINE_TYPE_WITH_CODE (GtkMenuItem, gtk_menu_item, GTK_TYPE_BIN,
G_ADD_PRIVATE (GtkMenuItem)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_menu_item_buildable_interface_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTIONABLE,
gtk_menu_item_actionable_interface_init))
static void
gtk_menu_item_set_action_name (GtkActionable *actionable,
const gchar *action_name)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (actionable);
if (!menu_item->priv->action_helper)
menu_item->priv->action_helper = gtk_action_helper_new (actionable);
gtk_action_helper_set_action_name (menu_item->priv->action_helper, action_name);
}
static void
gtk_menu_item_set_action_target_value (GtkActionable *actionable,
GVariant *action_target)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (actionable);
if (!menu_item->priv->action_helper)
menu_item->priv->action_helper = gtk_action_helper_new (actionable);
gtk_action_helper_set_action_target_value (menu_item->priv->action_helper, action_target);
}
static const gchar *
gtk_menu_item_get_action_name (GtkActionable *actionable)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (actionable);
return gtk_action_helper_get_action_name (menu_item->priv->action_helper);
}
static GVariant *
gtk_menu_item_get_action_target_value (GtkActionable *actionable)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (actionable);
return gtk_action_helper_get_action_target_value (menu_item->priv->action_helper);
}
static void
gtk_menu_item_actionable_interface_init (GtkActionableInterface *iface)
{
iface->set_action_name = gtk_menu_item_set_action_name;
iface->get_action_name = gtk_menu_item_get_action_name;
iface->set_action_target_value = gtk_menu_item_set_action_target_value;
iface->get_action_target_value = gtk_menu_item_get_action_target_value;
}
static void
gtk_menu_item_size_allocate (GtkWidget *widget,
const GtkAllocation *allocation,
int baseline)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkAllocation child_allocation;
GtkTextDirection direction;
GtkPackDirection child_pack_dir;
GtkWidget *child;
GtkWidget *parent;
g_return_if_fail (GTK_IS_MENU_ITEM (widget));
g_return_if_fail (allocation != NULL);
direction = gtk_widget_get_direction (widget);
parent = gtk_widget_get_parent (widget);
if (GTK_IS_MENU_BAR (parent))
{
child_pack_dir = gtk_menu_bar_get_child_pack_direction (GTK_MENU_BAR (parent));
}
else
{
child_pack_dir = GTK_PACK_DIRECTION_LTR;
}
child = gtk_bin_get_child (GTK_BIN (widget));
if (child)
{
child_allocation = *allocation;
if (child_pack_dir == GTK_PACK_DIRECTION_LTR ||
child_pack_dir == GTK_PACK_DIRECTION_RTL)
{
if ((direction == GTK_TEXT_DIR_LTR) == (child_pack_dir != GTK_PACK_DIRECTION_RTL))
child_allocation.x += priv->toggle_size;
child_allocation.width -= priv->toggle_size;
}
else
{
if ((direction == GTK_TEXT_DIR_LTR) == (child_pack_dir != GTK_PACK_DIRECTION_BTT))
child_allocation.y += priv->toggle_size;
child_allocation.height -= priv->toggle_size;
}
if ((priv->submenu && !GTK_IS_MENU_BAR (parent)) || priv->reserve_indicator)
{
GtkAllocation arrow_alloc;
gtk_widget_measure (priv->arrow_widget,
GTK_ORIENTATION_HORIZONTAL,
-1,
&arrow_alloc.width, NULL,
NULL, NULL);
gtk_widget_measure (priv->arrow_widget,
GTK_ORIENTATION_VERTICAL,
-1,
&arrow_alloc.height, NULL,
NULL, NULL);
if (direction == GTK_TEXT_DIR_LTR)
{
arrow_alloc.x = child_allocation.x +
child_allocation.width - arrow_alloc.width;
}
else
{
arrow_alloc.x = 0;
child_allocation.x += arrow_alloc.width;
}
child_allocation.width -= arrow_alloc.width;
arrow_alloc.y = child_allocation.y +
(child_allocation.height - arrow_alloc.height) / 2;
gtk_widget_size_allocate(priv->arrow_widget, &arrow_alloc, baseline);
}
child_allocation.width = MAX (1, child_allocation.width);
gtk_widget_size_allocate (child, &child_allocation, baseline);
}
if (priv->submenu)
gtk_menu_reposition (GTK_MENU (priv->submenu));
}
static void
gtk_menu_item_accel_width_foreach (GtkWidget *widget,
gpointer data)
{
guint *width = data;
if (GTK_IS_ACCEL_LABEL (widget))
{
guint w;
w = gtk_accel_label_get_accel_width (GTK_ACCEL_LABEL (widget));
*width = MAX (*width, w);
}
else if (GTK_IS_CONTAINER (widget))
gtk_container_foreach (GTK_CONTAINER (widget),
gtk_menu_item_accel_width_foreach,
data);
}
static void
gtk_menu_item_real_get_width (GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkWidget *child;
GtkWidget *parent;
guint accel_width;
gint min_width, nat_width;
min_width = nat_width = 0;
parent = gtk_widget_get_parent (widget);
child = gtk_bin_get_child (GTK_BIN (widget));
if (child != NULL && gtk_widget_get_visible (child))
{
gint child_min, child_nat;
gtk_widget_measure (child, GTK_ORIENTATION_HORIZONTAL, -1,
&child_min, &child_nat, NULL, NULL);
if ((priv->submenu && !GTK_IS_MENU_BAR (parent)) || priv->reserve_indicator)
{
gint arrow_size;
gtk_widget_measure (priv->arrow_widget,
GTK_ORIENTATION_HORIZONTAL,
-1,
&arrow_size, NULL,
NULL, NULL);
min_width += arrow_size;
nat_width = min_width;
}
min_width += child_min;
nat_width += child_nat;
}
accel_width = 0;
gtk_container_foreach (GTK_CONTAINER (menu_item),
gtk_menu_item_accel_width_foreach,
&accel_width);
priv->accelerator_width = accel_width;
*minimum_size = min_width;
*natural_size = nat_width;
}
static void
gtk_menu_item_real_get_height (GtkWidget *widget,
gint for_size,
gint *minimum_size,
gint *natural_size)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkWidget *child;
GtkWidget *parent;
guint accel_width;
gint min_height, nat_height;
gint avail_size = 0;
min_height = nat_height = 0;
if (for_size != -1)
avail_size = for_size;
parent = gtk_widget_get_parent (widget);
child = gtk_bin_get_child (GTK_BIN (widget));
if (child != NULL && gtk_widget_get_visible (child))
{
gint child_min, child_nat;
gint arrow_size = 0;
if ((priv->submenu && !GTK_IS_MENU_BAR (parent)) || priv->reserve_indicator)
gtk_widget_measure (priv->arrow_widget,
GTK_ORIENTATION_VERTICAL,
-1,
&arrow_size, NULL,
NULL, NULL);
if (for_size != -1)
{
avail_size -= arrow_size;
gtk_widget_measure (child, GTK_ORIENTATION_VERTICAL,
avail_size,
&child_min, &child_nat,
NULL, NULL);
}
else
{
gtk_widget_measure (child, GTK_ORIENTATION_VERTICAL, -1,
&child_min, &child_nat,
NULL, NULL);
}
min_height += child_min;
nat_height += child_nat;
min_height = MAX (min_height, arrow_size);
nat_height = MAX (nat_height, arrow_size);
}
accel_width = 0;
gtk_container_foreach (GTK_CONTAINER (menu_item),
gtk_menu_item_accel_width_foreach,
&accel_width);
priv->accelerator_width = accel_width;
*minimum_size = min_height;
*natural_size = nat_height;
}
static void
gtk_menu_item_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
if (orientation == GTK_ORIENTATION_HORIZONTAL)
gtk_menu_item_real_get_width (widget, minimum, natural);
else
gtk_menu_item_real_get_height (widget, for_size, minimum, natural);
}
static void
gtk_menu_item_class_init (GtkMenuItemClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
gobject_class->dispose = gtk_menu_item_dispose;
gobject_class->set_property = gtk_menu_item_set_property;
gobject_class->get_property = gtk_menu_item_get_property;
widget_class->destroy = gtk_menu_item_destroy;
widget_class->size_allocate = gtk_menu_item_size_allocate;
widget_class->mnemonic_activate = gtk_menu_item_mnemonic_activate;
widget_class->can_activate_accel = gtk_menu_item_can_activate_accel;
widget_class->measure = gtk_menu_item_measure;
widget_class->direction_changed = gtk_menu_item_direction_changed;
container_class->forall = gtk_menu_item_forall;
klass->activate = gtk_real_menu_item_activate;
klass->activate_item = gtk_real_menu_item_activate_item;
klass->toggle_size_request = gtk_real_menu_item_toggle_size_request;
klass->toggle_size_allocate = gtk_real_menu_item_toggle_size_allocate;
klass->set_label = gtk_real_menu_item_set_label;
klass->get_label = gtk_real_menu_item_get_label;
klass->select = gtk_real_menu_item_select;
klass->deselect = gtk_real_menu_item_deselect;
klass->hide_on_activate = TRUE;
/**
* GtkMenuItem::activate:
* @menuitem: the object which received the signal.
*
* Emitted when the item is activated.
*/
menu_item_signals[ACTIVATE] =
g_signal_new (I_("activate"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkMenuItemClass, activate),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
widget_class->activate_signal = menu_item_signals[ACTIVATE];
/**
* GtkMenuItem::activate-item:
* @menuitem: the object which received the signal.
*
* Emitted when the item is activated, but also if the menu item has a
* submenu. For normal applications, the relevant signal is
* #GtkMenuItem::activate.
*/
menu_item_signals[ACTIVATE_ITEM] =
g_signal_new (I_("activate-item"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkMenuItemClass, activate_item),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
menu_item_signals[TOGGLE_SIZE_REQUEST] =
g_signal_new (I_("toggle-size-request"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkMenuItemClass, toggle_size_request),
NULL, NULL,
NULL,
G_TYPE_NONE, 1,
G_TYPE_POINTER);
menu_item_signals[TOGGLE_SIZE_ALLOCATE] =
g_signal_new (I_("toggle-size-allocate"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkMenuItemClass, toggle_size_allocate),
NULL, NULL,
NULL,
G_TYPE_NONE, 1,
G_TYPE_INT);
menu_item_signals[SELECT] =
g_signal_new (I_("select"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkMenuItemClass, select),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
menu_item_signals[DESELECT] =
g_signal_new (I_("deselect"),
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkMenuItemClass, deselect),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
/**
* GtkMenuItem:submenu:
*
* The submenu attached to the menu item, or %NULL if it has none.
*/
menu_item_props[PROP_SUBMENU] =
g_param_spec_object ("submenu",
P_("Submenu"),
P_("The submenu attached to the menu item, or NULL if it has none"),
GTK_TYPE_MENU,
GTK_PARAM_READWRITE);
/**
* GtkMenuItem:accel-path:
*
* Sets the accelerator path of the menu item, through which runtime
* changes of the menu item's accelerator caused by the user can be
* identified and saved to persistant storage.
*/
menu_item_props[PROP_ACCEL_PATH] =
g_param_spec_string ("accel-path",
P_("Accel Path"),
P_("Sets the accelerator path of the menu item"),
NULL,
GTK_PARAM_READWRITE);
/**
* GtkMenuItem:label:
*
* The text for the child label.
*/
menu_item_props[PROP_LABEL] =
g_param_spec_string ("label",
P_("Label"),
P_("The text for the child label"),
"",
GTK_PARAM_READWRITE);
/**
* GtkMenuItem:use-underline:
*
* %TRUE if underlines in the text indicate mnemonics.
*/
menu_item_props[PROP_USE_UNDERLINE] =
g_param_spec_boolean ("use-underline",
P_("Use underline"),
P_("If set, an underline in the text indicates "
"the next character should be used for the "
"mnemonic accelerator key"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (gobject_class, LAST_PROP, menu_item_props);
g_object_class_override_property (gobject_class, PROP_ACTION_NAME, "action-name");
g_object_class_override_property (gobject_class, PROP_ACTION_TARGET, "action-target");
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_MENU_ITEM_ACCESSIBLE);
gtk_widget_class_set_css_name (widget_class, I_("menuitem"));
}
static void
gtk_menu_item_init (GtkMenuItem *menu_item)
{
GtkMenuItemPrivate *priv;
priv = gtk_menu_item_get_instance_private (menu_item);
menu_item->priv = priv;
gtk_widget_set_has_surface (GTK_WIDGET (menu_item), FALSE);
g_signal_connect (menu_item, "notify::parent", G_CALLBACK (gtk_menu_item_parent_cb), NULL);
priv->submenu = NULL;
priv->toggle_size = 0;
priv->accelerator_width = 0;
if (gtk_widget_get_direction (GTK_WIDGET (menu_item)) == GTK_TEXT_DIR_RTL)
priv->submenu_direction = GTK_DIRECTION_LEFT;
else
priv->submenu_direction = GTK_DIRECTION_RIGHT;
priv->submenu_placement = GTK_TOP_BOTTOM;
priv->timer = 0;
priv->motion_controller = gtk_event_controller_motion_new (GTK_WIDGET (menu_item));
g_signal_connect (priv->motion_controller, "enter", G_CALLBACK (gtk_menu_item_enter), menu_item);
g_signal_connect (priv->motion_controller, "leave", G_CALLBACK (gtk_menu_item_leave), menu_item);
}
/**
* gtk_menu_item_new:
*
* Creates a new #GtkMenuItem.
*
* Returns: the newly created #GtkMenuItem
*/
GtkWidget*
gtk_menu_item_new (void)
{
return g_object_new (GTK_TYPE_MENU_ITEM, NULL);
}
/**
* gtk_menu_item_new_with_label:
* @label: the text for the label
*
* Creates a new #GtkMenuItem whose child is a #GtkLabel.
*
* Returns: the newly created #GtkMenuItem
*/
GtkWidget*
gtk_menu_item_new_with_label (const gchar *label)
{
return g_object_new (GTK_TYPE_MENU_ITEM,
"label", label,
NULL);
}
/**
* gtk_menu_item_new_with_mnemonic:
* @label: The text of the button, with an underscore in front of the
* mnemonic character
*
* Creates a new #GtkMenuItem containing a label.
*
* The label will be created using gtk_label_new_with_mnemonic(),
* so underscores in @label indicate the mnemonic for the menu item.
*
* Returns: a new #GtkMenuItem
*/
GtkWidget*
gtk_menu_item_new_with_mnemonic (const gchar *label)
{
return g_object_new (GTK_TYPE_MENU_ITEM,
"use-underline", TRUE,
"label", label,
NULL);
}
static void
gtk_menu_item_dispose (GObject *object)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (object);
GtkMenuItemPrivate *priv = menu_item->priv;
g_clear_object (&priv->motion_controller);
g_clear_object (&priv->action_helper);
if (priv->arrow_widget)
{
gtk_widget_unparent (priv->arrow_widget);
priv->arrow_widget = NULL;
}
G_OBJECT_CLASS (gtk_menu_item_parent_class)->dispose (object);
}
static void
gtk_menu_item_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (object);
switch (prop_id)
{
case PROP_SUBMENU:
gtk_menu_item_set_submenu (menu_item, g_value_get_object (value));
break;
case PROP_ACCEL_PATH:
gtk_menu_item_set_accel_path (menu_item, g_value_get_string (value));
break;
case PROP_LABEL:
gtk_menu_item_set_label (menu_item, g_value_get_string (value));
break;
case PROP_USE_UNDERLINE:
gtk_menu_item_set_use_underline (menu_item, g_value_get_boolean (value));
break;
case PROP_ACTION_NAME:
gtk_menu_item_set_action_name (GTK_ACTIONABLE (menu_item), g_value_get_string (value));
break;
case PROP_ACTION_TARGET:
gtk_menu_item_set_action_target_value (GTK_ACTIONABLE (menu_item), g_value_get_variant (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_menu_item_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (object);
GtkMenuItemPrivate *priv = menu_item->priv;
switch (prop_id)
{
case PROP_SUBMENU:
g_value_set_object (value, gtk_menu_item_get_submenu (menu_item));
break;
case PROP_ACCEL_PATH:
g_value_set_string (value, gtk_menu_item_get_accel_path (menu_item));
break;
case PROP_LABEL:
g_value_set_string (value, gtk_menu_item_get_label (menu_item));
break;
case PROP_USE_UNDERLINE:
g_value_set_boolean (value, gtk_menu_item_get_use_underline (menu_item));
break;
case PROP_ACTION_NAME:
g_value_set_string (value, gtk_action_helper_get_action_name (priv->action_helper));
break;
case PROP_ACTION_TARGET:
g_value_set_variant (value, gtk_action_helper_get_action_target_value (priv->action_helper));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_menu_item_destroy (GtkWidget *widget)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
if (priv->submenu)
gtk_widget_destroy (priv->submenu);
GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->destroy (widget);
}
static void
gtk_menu_item_detacher (GtkWidget *widget,
GtkMenu *menu)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
g_return_if_fail (priv->submenu == (GtkWidget*) menu);
priv->submenu = NULL;
if (priv->arrow_widget)
{
gtk_widget_unparent (priv->arrow_widget);
priv->arrow_widget = NULL;
}
}
static void
gtk_menu_item_buildable_interface_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gtk_menu_item_buildable_add_child;
iface->custom_finished = gtk_menu_item_buildable_custom_finished;
}
static void
gtk_menu_item_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
if (type && strcmp (type, "submenu") == 0)
gtk_menu_item_set_submenu (GTK_MENU_ITEM (buildable),
GTK_WIDGET (child));
else
parent_buildable_iface->add_child (buildable, builder, child, type);
}
static void
gtk_menu_item_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer user_data)
{
GtkWidget *toplevel;
if (strcmp (tagname, "accelerator") == 0)
{
GtkMenuShell *menu_shell;
GtkWidget *attach;
menu_shell = GTK_MENU_SHELL (gtk_widget_get_parent (GTK_WIDGET (buildable)));
if (menu_shell)
{
while (GTK_IS_MENU (menu_shell) &&
(attach = gtk_menu_get_attach_widget (GTK_MENU (menu_shell))) != NULL)
menu_shell = GTK_MENU_SHELL (gtk_widget_get_parent (attach));
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (menu_shell));
}
else
{
/* Fall back to something ... */
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (buildable));
g_warning ("found a GtkMenuItem '%s' without a parent GtkMenuShell, assigned accelerators wont work.",
gtk_buildable_get_name (buildable));
}
/* Feed the correct toplevel to the GtkWidget accelerator parsing code */
_gtk_widget_buildable_finish_accelerator (GTK_WIDGET (buildable), toplevel, user_data);
}
else
parent_buildable_iface->custom_finished (buildable, builder, child, tagname, user_data);
}
static void
update_arrow_classes (GtkMenuItem *menu_item)
{
GtkMenuItemPrivate *priv = menu_item->priv;
GtkStyleContext *context;
GtkWidget *child;
if (!priv->arrow_widget)
return;
context = gtk_widget_get_style_context (priv->arrow_widget);
if (gtk_widget_get_direction (GTK_WIDGET (menu_item)) == GTK_TEXT_DIR_RTL)
{
gtk_style_context_add_class (context, GTK_STYLE_CLASS_LEFT);
gtk_style_context_remove_class (context, GTK_STYLE_CLASS_RIGHT);
child = gtk_widget_get_first_child (GTK_WIDGET (menu_item));
if (child != priv->arrow_widget)
gtk_widget_insert_after (GTK_WIDGET (menu_item), priv->arrow_widget, NULL);
}
else
{
gtk_style_context_add_class (context, GTK_STYLE_CLASS_RIGHT);
gtk_style_context_remove_class (context, GTK_STYLE_CLASS_LEFT);
child = gtk_widget_get_last_child (GTK_WIDGET (menu_item));
if (child != priv->arrow_widget)
gtk_widget_insert_before (GTK_WIDGET (menu_item), priv->arrow_widget, NULL);
}
}
static void
update_arrow_widget (GtkMenuItem *menu_item)
{
GtkMenuItemPrivate *priv = menu_item->priv;
GtkWidget *widget = GTK_WIDGET (menu_item);
gboolean should_have_arrow;
should_have_arrow = priv->reserve_indicator ||
(priv->submenu && !GTK_IS_MENU_BAR (gtk_widget_get_parent (widget)));
if (should_have_arrow)
{
if (!priv->arrow_widget)
{
priv->arrow_widget = gtk_icon_new ("arrow");
gtk_widget_set_parent (priv->arrow_widget, widget);
}
}
else if (priv->arrow_widget)
{
gtk_widget_unparent (priv->arrow_widget);
priv->arrow_widget = NULL;
}
}
/**
* gtk_menu_item_set_submenu:
* @menu_item: a #GtkMenuItem
* @submenu: (allow-none) (type Gtk.Menu): the submenu, or %NULL
*
* Sets or replaces the menu item’s submenu, or removes it when a %NULL
* submenu is passed.
*/
void
gtk_menu_item_set_submenu (GtkMenuItem *menu_item,
GtkWidget *submenu)
{
GtkWidget *widget;
GtkMenuItemPrivate *priv;
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
g_return_if_fail (submenu == NULL || GTK_IS_MENU (submenu));
widget = GTK_WIDGET (menu_item);
priv = menu_item->priv;
if (priv->submenu != submenu)
{
if (priv->submenu)
{
gtk_menu_detach (GTK_MENU (priv->submenu));
priv->submenu = NULL;
}
if (submenu)
{
priv->submenu = submenu;
gtk_menu_attach_to_widget (GTK_MENU (submenu),
widget,
gtk_menu_item_detacher);
}
update_arrow_widget (menu_item);
if (gtk_widget_get_parent (widget))
gtk_widget_queue_resize (widget);
g_object_notify_by_pspec (G_OBJECT (menu_item), menu_item_props[PROP_SUBMENU]);
}
}
/**
* gtk_menu_item_get_submenu:
* @menu_item: a #GtkMenuItem
*
* Gets the submenu underneath this menu item, if any.
* See gtk_menu_item_set_submenu().
*
* Returns: (nullable) (transfer none): submenu for this menu item, or %NULL if none
*/
GtkWidget *
gtk_menu_item_get_submenu (GtkMenuItem *menu_item)
{
g_return_val_if_fail (GTK_IS_MENU_ITEM (menu_item), NULL);
return menu_item->priv->submenu;
}
void _gtk_menu_item_set_placement (GtkMenuItem *menu_item,
GtkSubmenuPlacement placement);
void
_gtk_menu_item_set_placement (GtkMenuItem *menu_item,
GtkSubmenuPlacement placement)
{
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
menu_item->priv->submenu_placement = placement;
}
/**
* gtk_menu_item_select:
* @menu_item: the menu item
*
* Emits the #GtkMenuItem::select signal on the given item.
*/
void
gtk_menu_item_select (GtkMenuItem *menu_item)
{
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
g_signal_emit (menu_item, menu_item_signals[SELECT], 0);
}
/**
* gtk_menu_item_deselect:
* @menu_item: the menu item
*
* Emits the #GtkMenuItem::deselect signal on the given item.
*/
void
gtk_menu_item_deselect (GtkMenuItem *menu_item)
{
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
g_signal_emit (menu_item, menu_item_signals[DESELECT], 0);
}
/**
* gtk_menu_item_activate:
* @menu_item: the menu item
*
* Emits the #GtkMenuItem::activate signal on the given item
*/
void
gtk_menu_item_activate (GtkMenuItem *menu_item)
{
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
g_signal_emit (menu_item, menu_item_signals[ACTIVATE], 0);
}
/**
* gtk_menu_item_toggle_size_request:
* @menu_item: the menu item
* @requisition: (inout): the requisition to use as signal data.
*
* Emits the #GtkMenuItem::toggle-size-request signal on the given item.
*/
void
gtk_menu_item_toggle_size_request (GtkMenuItem *menu_item,
gint *requisition)
{
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
g_signal_emit (menu_item, menu_item_signals[TOGGLE_SIZE_REQUEST], 0, requisition);
}
/**
* gtk_menu_item_toggle_size_allocate:
* @menu_item: the menu item.
* @allocation: the allocation to use as signal data.
*
* Emits the #GtkMenuItem::toggle-size-allocate signal on the given item.
*/
void
gtk_menu_item_toggle_size_allocate (GtkMenuItem *menu_item,
gint allocation)
{
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
g_signal_emit (menu_item, menu_item_signals[TOGGLE_SIZE_ALLOCATE], 0, allocation);
}
static void
gtk_menu_item_enter (GtkEventController *controller,
double x,
double y,
gpointer user_data)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (user_data);
GtkWidget *menu_shell;
GdkCrossingMode mode;
GdkEvent *event;
event = gtk_get_current_event (); /* FIXME controller event */
if (gdk_event_get_crossing_mode ((GdkEvent *)event, &mode))
{
if (mode == GDK_CROSSING_GTK_GRAB ||
mode == GDK_CROSSING_GTK_UNGRAB ||
mode == GDK_CROSSING_STATE_CHANGED)
return;
}
if (gdk_event_get_device ((GdkEvent*) event) ==
gdk_event_get_source_device ((GdkEvent*) event))
return;
menu_shell = gtk_widget_get_parent (GTK_WIDGET (menu_item));
if (GTK_IS_MENU_SHELL (menu_shell) &&
GTK_MENU_SHELL (menu_shell)->priv->active)
gtk_menu_shell_select_item (GTK_MENU_SHELL (menu_shell), GTK_WIDGET (menu_item));
}
static void
gtk_menu_item_leave (GtkEventController *controller,
gpointer user_data)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (user_data);
GtkWidget *menu_shell = gtk_widget_get_parent (GTK_WIDGET (menu_item));
if (GTK_IS_MENU_SHELL (menu_shell) && !menu_item->priv->submenu)
gtk_menu_shell_deselect (GTK_MENU_SHELL (menu_shell));
}
static void
gtk_real_menu_item_select (GtkMenuItem *menu_item)
{
GtkMenuItemPrivate *priv = menu_item->priv;
GdkDevice *source_device = NULL;
GdkEvent *current_event;
current_event = gtk_get_current_event ();
if (current_event)
{
source_device = gdk_event_get_source_device (current_event);
g_object_unref (current_event);
}
if ((!source_device ||
gdk_device_get_source (source_device) != GDK_SOURCE_TOUCHSCREEN) &&
priv->submenu &&
!gtk_widget_get_mapped (priv->submenu))
{
_gtk_menu_item_popup_submenu (GTK_WIDGET (menu_item), TRUE);
}
gtk_widget_set_state_flags (GTK_WIDGET (menu_item),
GTK_STATE_FLAG_PRELIGHT, FALSE);
gtk_widget_queue_draw (GTK_WIDGET (menu_item));
}
static void
gtk_real_menu_item_deselect (GtkMenuItem *menu_item)
{
GtkMenuItemPrivate *priv = menu_item->priv;
if (priv->submenu)
_gtk_menu_item_popdown_submenu (GTK_WIDGET (menu_item));
gtk_widget_unset_state_flags (GTK_WIDGET (menu_item),
GTK_STATE_FLAG_PRELIGHT);
gtk_widget_queue_draw (GTK_WIDGET (menu_item));
}
static gboolean
gtk_menu_item_mnemonic_activate (GtkWidget *widget,
gboolean group_cycling)
{
GtkWidget *parent;
parent = gtk_widget_get_parent (widget);
if (GTK_IS_MENU_SHELL (parent))
_gtk_menu_shell_set_keyboard_mode (GTK_MENU_SHELL (parent), TRUE);
if (group_cycling &&
parent &&
GTK_IS_MENU_SHELL (parent) &&
GTK_MENU_SHELL (parent)->priv->active)
{
gtk_menu_shell_select_item (GTK_MENU_SHELL (parent), widget);
}
else
g_signal_emit (widget, menu_item_signals[ACTIVATE_ITEM], 0);
return TRUE;
}
static void
gtk_real_menu_item_activate (GtkMenuItem *menu_item)
{
GtkMenuItemPrivate *priv = menu_item->priv;
if (priv->action_helper)
gtk_action_helper_activate (priv->action_helper);
}
static void
gtk_real_menu_item_activate_item (GtkMenuItem *menu_item)
{
GtkMenuItemPrivate *priv = menu_item->priv;
GtkWidget *parent;
GtkWidget *widget;
widget = GTK_WIDGET (menu_item);
parent = gtk_widget_get_parent (widget);
if (parent && GTK_IS_MENU_SHELL (parent))
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (parent);
if (priv->submenu == NULL)
gtk_menu_shell_activate_item (menu_shell, widget, TRUE);
else
{
gtk_menu_shell_select_item (menu_shell, widget);
_gtk_menu_item_popup_submenu (widget, FALSE);
gtk_menu_shell_select_first (GTK_MENU_SHELL (priv->submenu), TRUE);
}
}
}
static void
gtk_real_menu_item_toggle_size_request (GtkMenuItem *menu_item,
gint *requisition)
{
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
*requisition = 0;
}
static void
gtk_real_menu_item_toggle_size_allocate (GtkMenuItem *menu_item,
gint allocation)
{
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
menu_item->priv->toggle_size = allocation;
}
static void
gtk_real_menu_item_set_label (GtkMenuItem *menu_item,
const gchar *label)
{
GtkWidget *child;
gtk_menu_item_ensure_label (menu_item);
child = gtk_bin_get_child (GTK_BIN (menu_item));
if (GTK_IS_LABEL (child) ||
GTK_IS_ACCEL_LABEL (child))
{
g_object_set (child, "label", label ? label : "", NULL);
g_object_notify_by_pspec (G_OBJECT (menu_item), menu_item_props[PROP_LABEL]);
}
}
static const gchar *
gtk_real_menu_item_get_label (GtkMenuItem *menu_item)
{
GtkWidget *child;
gtk_menu_item_ensure_label (menu_item);
child = gtk_bin_get_child (GTK_BIN (menu_item));
if (GTK_IS_LABEL (child))
return gtk_label_get_label (GTK_LABEL (child));
else if (GTK_IS_ACCEL_LABEL (child))
return gtk_accel_label_get_label (GTK_ACCEL_LABEL (child));
return NULL;
}
static void
free_timeval (GTimeVal *val)
{
g_slice_free (GTimeVal, val);
}
static void
popped_up_cb (GtkMenu *menu,
const GdkRectangle *flipped_rect,
const GdkRectangle *final_rect,
gboolean flipped_x,
gboolean flipped_y,
GtkMenuItem *menu_item)
{
GtkWidget *parent = gtk_widget_get_parent (GTK_WIDGET (menu_item));
GtkMenu *parent_menu = GTK_IS_MENU (parent) ? GTK_MENU (parent) : NULL;
if (parent_menu && GTK_IS_MENU_ITEM (parent_menu->priv->parent_menu_item))
menu_item->priv->submenu_direction = GTK_MENU_ITEM (parent_menu->priv->parent_menu_item)->priv->submenu_direction;
else
{
/* this case is stateful, do it at most once */
g_signal_handlers_disconnect_by_func (menu, popped_up_cb, menu_item);
}
if (flipped_x)
{
switch (menu_item->priv->submenu_direction)
{
case GTK_DIRECTION_LEFT:
menu_item->priv->submenu_direction = GTK_DIRECTION_RIGHT;
break;
case GTK_DIRECTION_RIGHT:
default:
menu_item->priv->submenu_direction = GTK_DIRECTION_LEFT;
break;
}
}
}
static void
gtk_menu_item_real_popup_submenu (GtkWidget *widget,
const GdkEvent *trigger_event,
gboolean remember_exact_time)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkSubmenuDirection submenu_direction;
GtkStyleContext *context;
GtkBorder parent_padding;
GtkBorder menu_padding;
gint horizontal_offset;
gint vertical_offset;
GtkWidget *parent;
GtkMenu *parent_menu;
parent = gtk_widget_get_parent (widget);
parent_menu = GTK_IS_MENU (parent) ? GTK_MENU (parent) : NULL;
if (gtk_widget_is_sensitive (priv->submenu) && parent)
{
gboolean take_focus;
take_focus = gtk_menu_shell_get_take_focus (GTK_MENU_SHELL (parent));
gtk_menu_shell_set_take_focus (GTK_MENU_SHELL (priv->submenu), take_focus);
if (remember_exact_time)
{
GTimeVal *popup_time = g_slice_new0 (GTimeVal);
g_get_current_time (popup_time);
g_object_set_data_full (G_OBJECT (priv->submenu),
"gtk-menu-exact-popup-time", popup_time,
(GDestroyNotify) free_timeval);
}
else
{
g_object_set_data (G_OBJECT (priv->submenu),
"gtk-menu-exact-popup-time", NULL);
}
/* Position the submenu at the menu item if it is mapped.
* Otherwise, position the submenu at the pointer device.
*/
if (gtk_widget_get_surface (widget))
{
switch (priv->submenu_placement)
{
case GTK_TOP_BOTTOM:
g_object_set (priv->submenu,
"anchor-hints", (GDK_ANCHOR_FLIP_Y |
GDK_ANCHOR_SLIDE |
GDK_ANCHOR_RESIZE),
"menu-type-hint", (priv->from_menubar ?
GDK_SURFACE_TYPE_HINT_DROPDOWN_MENU :
GDK_SURFACE_TYPE_HINT_POPUP_MENU),
NULL);
gtk_menu_popup_at_widget (GTK_MENU (priv->submenu),
widget,
GDK_GRAVITY_SOUTH_WEST,
GDK_GRAVITY_NORTH_WEST,
trigger_event);
break;
case GTK_LEFT_RIGHT:
default:
if (parent_menu && GTK_IS_MENU_ITEM (parent_menu->priv->parent_menu_item))
submenu_direction = GTK_MENU_ITEM (parent_menu->priv->parent_menu_item)->priv->submenu_direction;
else
submenu_direction = priv->submenu_direction;
g_signal_handlers_disconnect_by_func (priv->submenu, popped_up_cb, menu_item);
g_signal_connect (priv->submenu, "popped-up", G_CALLBACK (popped_up_cb), menu_item);
horizontal_offset = 0;
vertical_offset = 0;
context = gtk_widget_get_style_context (parent);
gtk_style_context_get_padding (context, &parent_padding);
context = gtk_widget_get_style_context (priv->submenu);
gtk_style_context_get_padding (context, &menu_padding);
g_object_set (priv->submenu,
"anchor-hints", (GDK_ANCHOR_FLIP_X |
GDK_ANCHOR_SLIDE |
GDK_ANCHOR_RESIZE),
"rect-anchor-dy", vertical_offset - menu_padding.top,
NULL);
switch (submenu_direction)
{
case GTK_DIRECTION_RIGHT:
default:
g_object_set (priv->submenu,
"rect-anchor-dx", horizontal_offset + parent_padding.right + menu_padding.left,
NULL);
gtk_menu_popup_at_widget (GTK_MENU (priv->submenu),
widget,
GDK_GRAVITY_NORTH_EAST,
GDK_GRAVITY_NORTH_WEST,
trigger_event);
break;
case GTK_DIRECTION_LEFT:
g_object_set (priv->submenu,
"rect-anchor-dx", -(horizontal_offset + parent_padding.left + menu_padding.right),
NULL);
gtk_menu_popup_at_widget (GTK_MENU (priv->submenu),
widget,
GDK_GRAVITY_NORTH_WEST,
GDK_GRAVITY_NORTH_EAST,
trigger_event);
break;
}
break;
}
}
else
gtk_menu_popup_at_pointer (GTK_MENU (priv->submenu), trigger_event);
}
/* Enable themeing of the parent menu item depending on whether
* its submenu is shown or not.
*/
gtk_widget_queue_draw (widget);
}
typedef struct
{
GtkMenuItem *menu_item;
GdkEvent *trigger_event;
} PopupInfo;
static gint
gtk_menu_item_popup_timeout (gpointer data)
{
PopupInfo *info = data;
GtkMenuItem *menu_item = info->menu_item;
GtkMenuItemPrivate *priv = menu_item->priv;
GtkWidget *parent;
parent = gtk_widget_get_parent (GTK_WIDGET (menu_item));
if (GTK_IS_MENU_SHELL (parent) && GTK_MENU_SHELL (parent)->priv->active)
gtk_menu_item_real_popup_submenu (GTK_WIDGET (menu_item), info->trigger_event, TRUE);
priv->timer = 0;
g_clear_object (&info->trigger_event);
g_slice_free (PopupInfo, info);
return FALSE;
}
static gint
get_popup_delay (GtkWidget *widget)
{
GtkWidget *parent;
parent = gtk_widget_get_parent (widget);
if (GTK_IS_MENU_SHELL (parent))
return _gtk_menu_shell_get_popup_delay (GTK_MENU_SHELL (parent));
else
return MENU_POPUP_DELAY;
}
void
_gtk_menu_item_popup_submenu (GtkWidget *widget,
gboolean with_delay)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
if (priv->timer)
{
g_source_remove (priv->timer);
priv->timer = 0;
with_delay = FALSE;
}
if (with_delay)
{
gint popup_delay = get_popup_delay (widget);
if (popup_delay > 0)
{
PopupInfo *info = g_slice_new (PopupInfo);
info->menu_item = menu_item;
info->trigger_event = gtk_get_current_event ();
priv->timer = g_timeout_add (popup_delay, gtk_menu_item_popup_timeout, info);
g_source_set_name_by_id (priv->timer, "[gtk+] gtk_menu_item_popup_timeout");
return;
}
}
gtk_menu_item_real_popup_submenu (widget, NULL, FALSE);
}
void
_gtk_menu_item_popdown_submenu (GtkWidget *widget)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
if (priv->submenu)
{
g_object_set_data (G_OBJECT (priv->submenu),
"gtk-menu-exact-popup-time", NULL);
if (priv->timer)
{
g_source_remove (priv->timer);
priv->timer = 0;
}
else
gtk_menu_popdown (GTK_MENU (priv->submenu));
gtk_widget_queue_draw (widget);
}
}
static gboolean
gtk_menu_item_can_activate_accel (GtkWidget *widget,
guint signal_id)
{
GtkWidget *parent;
parent = gtk_widget_get_parent (widget);
/* Chain to the parent GtkMenu for further checks */
return (gtk_widget_is_sensitive (widget) && gtk_widget_get_visible (widget) &&
parent && gtk_widget_can_activate_accel (parent, signal_id));
}
static void
gtk_menu_item_accel_name_foreach (GtkWidget *widget,
gpointer data)
{
const gchar **path_p = data;
if (!*path_p)
{
if (GTK_IS_LABEL (widget))
{
*path_p = gtk_label_get_text (GTK_LABEL (widget));
if (*path_p && (*path_p)[0] == 0)
*path_p = NULL;
}
else if (GTK_IS_CONTAINER (widget))
gtk_container_foreach (GTK_CONTAINER (widget),
gtk_menu_item_accel_name_foreach,
data);
}
}
static void
gtk_menu_item_parent_cb (GObject *object,
GParamSpec *pspec,
gpointer user_data)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (object);
GtkMenu *menu;
GtkWidget *parent;
parent = gtk_widget_get_parent (GTK_WIDGET (object));
menu = GTK_IS_MENU (parent) ? GTK_MENU (parent) : NULL;
if (menu)
_gtk_menu_item_refresh_accel_path (menu_item,
menu->priv->accel_path,
menu->priv->accel_group,
TRUE);
update_arrow_widget (menu_item);
}
static void
gtk_menu_item_direction_changed (GtkWidget *widget,
GtkTextDirection previous_dir)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
update_arrow_classes (menu_item);
GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->direction_changed (widget, previous_dir);
}
void
_gtk_menu_item_refresh_accel_path (GtkMenuItem *menu_item,
const gchar *prefix,
GtkAccelGroup *accel_group,
gboolean group_changed)
{
GtkMenuItemPrivate *priv = menu_item->priv;
const gchar *path;
GtkWidget *widget;
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
g_return_if_fail (!accel_group || GTK_IS_ACCEL_GROUP (accel_group));
widget = GTK_WIDGET (menu_item);
if (!accel_group)
{
gtk_widget_set_accel_path (widget, NULL, NULL);
return;
}
path = _gtk_widget_get_accel_path (widget, NULL);
if (!path) /* no active accel_path yet */
{
path = priv->accel_path;
if (!path && prefix)
{
const gchar *postfix = NULL;
gchar *new_path;
/* try to construct one from label text */
gtk_container_foreach (GTK_CONTAINER (menu_item),
gtk_menu_item_accel_name_foreach,
&postfix);
if (postfix)
{
new_path = g_strconcat (prefix, "/", postfix, NULL);
path = priv->accel_path = (char*)g_intern_string (new_path);
g_free (new_path);
}
}
if (path)
gtk_widget_set_accel_path (widget, path, accel_group);
}
else if (group_changed) /* reinstall accelerators */
gtk_widget_set_accel_path (widget, path, accel_group);
}
/**
* gtk_menu_item_set_accel_path:
* @menu_item: a valid #GtkMenuItem
* @accel_path: (allow-none): accelerator path, corresponding to this menu
* item’s functionality, or %NULL to unset the current path.
*
* Set the accelerator path on @menu_item, through which runtime
* changes of the menu item’s accelerator caused by the user can be
* identified and saved to persistent storage (see gtk_accel_map_save()
* on this). To set up a default accelerator for this menu item, call
* gtk_accel_map_add_entry() with the same @accel_path. See also
* gtk_accel_map_add_entry() on the specifics of accelerator paths,
* and gtk_menu_set_accel_path() for a more convenient variant of
* this function.
*
* This function is basically a convenience wrapper that handles
* calling gtk_widget_set_accel_path() with the appropriate accelerator
* group for the menu item.
*
* Note that you do need to set an accelerator on the parent menu with
* gtk_menu_set_accel_group() for this to work.
*
* Note that @accel_path string will be stored in a #GQuark.
* Therefore, if you pass a static string, you can save some memory
* by interning it first with g_intern_static_string().
*/
void
gtk_menu_item_set_accel_path (GtkMenuItem *menu_item,
const gchar *accel_path)
{
GtkMenuItemPrivate *priv = menu_item->priv;
GtkWidget *parent;
GtkWidget *widget;
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
g_return_if_fail (accel_path == NULL ||
(accel_path[0] == '<' && strchr (accel_path, '/')));
widget = GTK_WIDGET (menu_item);
/* store new path */
priv->accel_path = (char*)g_intern_string (accel_path);
/* forget accelerators associated with old path */
gtk_widget_set_accel_path (widget, NULL, NULL);
/* install accelerators associated with new path */
parent = gtk_widget_get_parent (widget);
if (GTK_IS_MENU (parent))
{
GtkMenu *menu = GTK_MENU (parent);
if (menu->priv->accel_group)
_gtk_menu_item_refresh_accel_path (GTK_MENU_ITEM (widget),
NULL,
menu->priv->accel_group,
FALSE);
}
}
/**
* gtk_menu_item_get_accel_path:
* @menu_item: a valid #GtkMenuItem
*
* Retrieve the accelerator path that was previously set on @menu_item.
*
* See gtk_menu_item_set_accel_path() for details.
*
* Returns: (nullable) (transfer none): the accelerator path corresponding to
* this menu item’s functionality, or %NULL if not set
*/
const gchar *
gtk_menu_item_get_accel_path (GtkMenuItem *menu_item)
{
g_return_val_if_fail (GTK_IS_MENU_ITEM (menu_item), NULL);
return menu_item->priv->accel_path;
}
static void
gtk_menu_item_forall (GtkContainer *container,
GtkCallback callback,
gpointer callback_data)
{
GtkWidget *child;
g_return_if_fail (GTK_IS_MENU_ITEM (container));
g_return_if_fail (callback != NULL);
child = gtk_bin_get_child (GTK_BIN (container));
if (child)
callback (child, callback_data);
}
gboolean
_gtk_menu_item_is_selectable (GtkWidget *menu_item)
{
if ((!gtk_bin_get_child (GTK_BIN (menu_item)) &&
G_OBJECT_TYPE (menu_item) == GTK_TYPE_MENU_ITEM) ||
GTK_IS_SEPARATOR_MENU_ITEM (menu_item) ||
!gtk_widget_is_sensitive (menu_item) ||
!gtk_widget_get_visible (menu_item))
return FALSE;
return TRUE;
}
static void
gtk_menu_item_ensure_label (GtkMenuItem *menu_item)
{
GtkWidget *accel_label;
if (!gtk_bin_get_child (GTK_BIN (menu_item)))
{
accel_label = g_object_new (GTK_TYPE_ACCEL_LABEL, NULL);
gtk_widget_set_halign (accel_label, GTK_ALIGN_FILL);
gtk_widget_set_valign (accel_label, GTK_ALIGN_CENTER);
gtk_container_add (GTK_CONTAINER (menu_item), accel_label);
gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (accel_label),
GTK_WIDGET (menu_item));
}
}
/**
* gtk_menu_item_set_label:
* @menu_item: a #GtkMenuItem
* @label: the text you want to set
*
* Sets @text on the @menu_item label
*/
void
gtk_menu_item_set_label (GtkMenuItem *menu_item,
const gchar *label)
{
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
GTK_MENU_ITEM_GET_CLASS (menu_item)->set_label (menu_item, label);
}
/**
* gtk_menu_item_get_label:
* @menu_item: a #GtkMenuItem
*
* Sets @text on the @menu_item label
*
* Returns: The text in the @menu_item label. This is the internal
* string used by the label, and must not be modified.
*/
const gchar *
gtk_menu_item_get_label (GtkMenuItem *menu_item)
{
g_return_val_if_fail (GTK_IS_MENU_ITEM (menu_item), NULL);
return GTK_MENU_ITEM_GET_CLASS (menu_item)->get_label (menu_item);
}
/**
* gtk_menu_item_set_use_underline:
* @menu_item: a #GtkMenuItem
* @setting: %TRUE if underlines in the text indicate mnemonics
*
* If true, an underline in the text indicates the next character
* should be used for the mnemonic accelerator key.
*/
void
gtk_menu_item_set_use_underline (GtkMenuItem *menu_item,
gboolean setting)
{
GtkWidget *child;
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
gtk_menu_item_ensure_label (menu_item);
child = gtk_bin_get_child (GTK_BIN (menu_item));
if (GTK_IS_ACCEL_LABEL (child) &&
gtk_accel_label_get_use_underline (GTK_ACCEL_LABEL (child)) != setting)
{
gtk_accel_label_set_use_underline (GTK_ACCEL_LABEL (child), setting);
g_object_notify_by_pspec (G_OBJECT (menu_item), menu_item_props[PROP_USE_UNDERLINE]);
}
}
/**
* gtk_menu_item_get_use_underline:
* @menu_item: a #GtkMenuItem
*
* Checks if an underline in the text indicates the next character
* should be used for the mnemonic accelerator key.
*
* Returns: %TRUE if an embedded underline in the label
* indicates the mnemonic accelerator key.
*/
gboolean
gtk_menu_item_get_use_underline (GtkMenuItem *menu_item)
{
GtkWidget *child;
g_return_val_if_fail (GTK_IS_MENU_ITEM (menu_item), FALSE);
gtk_menu_item_ensure_label (menu_item);
child = gtk_bin_get_child (GTK_BIN (menu_item));
if (GTK_IS_LABEL (child))
return gtk_label_get_use_underline (GTK_LABEL (child));
else if (GTK_IS_ACCEL_LABEL (child))
return gtk_accel_label_get_use_underline (GTK_ACCEL_LABEL (child));
return FALSE;
}
/**
* gtk_menu_item_set_reserve_indicator:
* @menu_item: a #GtkMenuItem
* @reserve: the new value
*
* Sets whether the @menu_item should reserve space for
* the submenu indicator, regardless if it actually has
* a submenu or not.
*
* There should be little need for applications to call
* this functions.
*/
void
gtk_menu_item_set_reserve_indicator (GtkMenuItem *menu_item,
gboolean reserve)
{
GtkMenuItemPrivate *priv;
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
priv = menu_item->priv;
if (priv->reserve_indicator != reserve)
{
priv->reserve_indicator = reserve;
update_arrow_widget (menu_item);
gtk_widget_queue_resize (GTK_WIDGET (menu_item));
}
}
/**
* gtk_menu_item_get_reserve_indicator:
* @menu_item: a #GtkMenuItem
*
* Returns whether the @menu_item reserves space for
* the submenu indicator, regardless if it has a submenu
* or not.
*
* Returns: %TRUE if @menu_item always reserves space for the
* submenu indicator
*/
gboolean
gtk_menu_item_get_reserve_indicator (GtkMenuItem *menu_item)
{
g_return_val_if_fail (GTK_IS_MENU_ITEM (menu_item), FALSE);
return menu_item->priv->reserve_indicator;
}
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