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gtk2/gtk/gtkmenuitem.c
Carlos Garnacho 40ab7e1c95 gtkmenu*: Simplify event handling 
Instead of delegating on the parent shell of a menu item/shell on a variety
of situations, Simplify event handling so:
1) Menu item selection is handled entirely on GtkMenuItem through crossing
   events.
2) The deepmost menu shell handles clicks inside and outside of it.

This avoids the rather hard to follow gtk_widget_event() calls going on all
throughout the handling of crossing and button events, and makes menus work
again.
2017-05-25 16:25:59 +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 "gtkbuiltiniconprivate.h"
#include "gtkcontainerprivate.h"
#include "gtkcsscustomgadgetprivate.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"
#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 *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 gboolean gtk_menu_item_enter (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_menu_item_leave (GtkWidget *widget,
GdkEventCrossing *event);
static void gtk_menu_item_parent_set (GtkWidget *widget,
GtkWidget *previous_parent);
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 gboolean
gtk_menu_item_render (GtkCssGadget *gadget,
GtkSnapshot *snapshot,
int x,
int y,
int width,
int height,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkWidget *parent;
parent = gtk_widget_get_parent (widget);
if (priv->submenu && !GTK_IS_MENU_BAR (parent))
gtk_css_gadget_snapshot (priv->arrow_gadget, snapshot);
GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->snapshot (widget, snapshot);
return FALSE;
}
static void
gtk_menu_item_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
gtk_css_gadget_snapshot (GTK_MENU_ITEM (widget)->priv->gadget, snapshot);
}
static void
gtk_menu_item_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkAllocation child_allocation;
GtkAllocation arrow_clip = { 0 };
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_css_gadget_get_preferred_size (priv->arrow_gadget,
GTK_ORIENTATION_HORIZONTAL,
-1,
&arrow_alloc.width, NULL,
NULL, NULL);
gtk_css_gadget_get_preferred_size (priv->arrow_gadget,
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_css_gadget_allocate (priv->arrow_gadget,
&arrow_alloc,
baseline,
&arrow_clip);
}
child_allocation.width = MAX (1, child_allocation.width);
gtk_widget_size_allocate (child, &child_allocation);
gtk_container_get_children_clip (GTK_CONTAINER (widget), out_clip);
gdk_rectangle_union (out_clip, &arrow_clip, out_clip);
}
if (priv->submenu)
gtk_menu_reposition (GTK_MENU (priv->submenu));
}
static void
gtk_menu_item_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkAllocation clip;
gtk_widget_set_allocation (widget, allocation);
gtk_css_gadget_allocate (priv->gadget,
allocation,
gtk_widget_get_allocated_baseline (widget),
&clip);
gtk_widget_set_clip (widget, &clip);
}
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_css_gadget_get_preferred_size (priv->arrow_gadget,
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_css_gadget_get_preferred_size (priv->arrow_gadget,
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 (GtkCssGadget *gadget,
GtkOrientation orientation,
int size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
gtk_menu_item_real_get_width (widget, minimum, natural);
else
gtk_menu_item_real_get_height (widget, size, minimum, natural);
}
static void
gtk_menu_item_measure_ (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
gtk_css_gadget_get_preferred_size (GTK_MENU_ITEM (widget)->priv->gadget,
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
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->snapshot = gtk_menu_item_snapshot;
widget_class->enter_notify_event = gtk_menu_item_enter;
widget_class->leave_notify_event = gtk_menu_item_leave;
widget_class->mnemonic_activate = gtk_menu_item_mnemonic_activate;
widget_class->parent_set = gtk_menu_item_parent_set;
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.
*
* Since: 2.12
*/
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.
*
* Since: 2.14
*/
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.
*
* Since: 2.16
*/
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.
*
* Since: 2.16
*/
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, "menuitem");
}
static void
gtk_menu_item_init (GtkMenuItem *menu_item)
{
GtkMenuItemPrivate *priv;
GtkCssNode *widget_node;
priv = gtk_menu_item_get_instance_private (menu_item);
menu_item->priv = priv;
gtk_widget_set_has_window (GTK_WIDGET (menu_item), FALSE);
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;
widget_node = gtk_widget_get_css_node (GTK_WIDGET (menu_item));
priv->gadget = gtk_css_custom_gadget_new_for_node (widget_node,
GTK_WIDGET (menu_item),
gtk_menu_item_measure,
gtk_menu_item_allocate,
gtk_menu_item_render,
NULL, NULL);
}
GtkCssGadget *
_gtk_menu_item_get_gadget (GtkMenuItem *menu_item)
{
return menu_item->priv->gadget;
}
/**
* 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->action_helper);
g_clear_object (&priv->arrow_gadget);
g_clear_object (&priv->gadget);
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;
g_clear_object (&priv->arrow_gadget);
}
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_node_classes (GtkMenuItem *menu_item)
{
GtkMenuItemPrivate *priv = menu_item->priv;
GtkCssNode *arrow_node, *widget_node, *node;
if (!priv->arrow_gadget)
return;
arrow_node = gtk_css_gadget_get_node (priv->arrow_gadget);
widget_node = gtk_widget_get_css_node (GTK_WIDGET (menu_item));
gtk_css_node_set_state (arrow_node, gtk_css_node_get_state (widget_node));
if (gtk_widget_get_direction (GTK_WIDGET (menu_item)) == GTK_TEXT_DIR_RTL)
{
gtk_css_node_add_class (arrow_node, g_quark_from_static_string (GTK_STYLE_CLASS_LEFT));
gtk_css_node_remove_class (arrow_node, g_quark_from_static_string (GTK_STYLE_CLASS_RIGHT));
node = gtk_css_node_get_first_child (widget_node);
if (node != arrow_node)
gtk_css_node_insert_before (widget_node, arrow_node, node);
}
else
{
gtk_css_node_remove_class (arrow_node, g_quark_from_static_string (GTK_STYLE_CLASS_LEFT));
gtk_css_node_add_class (arrow_node, g_quark_from_static_string (GTK_STYLE_CLASS_RIGHT));
node = gtk_css_node_get_last_child (widget_node);
if (node != arrow_node)
gtk_css_node_insert_after (widget_node, arrow_node, node);
}
}
static void
update_arrow_gadget (GtkMenuItem *menu_item)
{
GtkMenuItemPrivate *priv = menu_item->priv;
GtkWidget *widget = GTK_WIDGET (menu_item);
gboolean should_have_gadget;
should_have_gadget = priv->reserve_indicator ||
(priv->submenu && !GTK_IS_MENU_BAR (gtk_widget_get_parent (widget)));
if (should_have_gadget)
{
if (!priv->arrow_gadget)
{
priv->arrow_gadget = gtk_builtin_icon_new ("arrow",
widget,
priv->gadget,
NULL);
update_node_classes (menu_item);
}
}
else
{
g_clear_object (&priv->arrow_gadget);
}
}
/**
* 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_gadget (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 gboolean
gtk_menu_item_enter (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkWidget *menu_shell;
if (event->mode == GDK_CROSSING_GTK_GRAB ||
event->mode == GDK_CROSSING_GTK_UNGRAB ||
event->mode == GDK_CROSSING_STATE_CHANGED)
return GDK_EVENT_STOP;
if (gdk_event_get_device ((GdkEvent*) event) ==
gdk_event_get_source_device ((GdkEvent*) event))
return GDK_EVENT_STOP;
menu_shell = gtk_widget_get_parent (widget);
if (GTK_IS_MENU_SHELL (menu_shell) && GTK_IS_MENU_ITEM (widget) &&
GTK_MENU_SHELL (menu_shell)->priv->active)
gtk_menu_shell_select_item (GTK_MENU_SHELL (menu_shell), widget);
return GDK_EVENT_STOP;
}
static gboolean
gtk_menu_item_leave (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkWidget *menu_shell = gtk_widget_get_parent (widget);
if (GTK_IS_MENU_SHELL (menu_shell) && !menu_item->priv->submenu)
gtk_menu_shell_deselect (GTK_MENU_SHELL (menu_shell));
return GDK_EVENT_STOP;
}
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);
gdk_event_free (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_label_set_label (GTK_LABEL (child), label ? label : "");
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));
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:
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_window (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_WINDOW_TYPE_HINT_DROPDOWN_MENU :
GDK_WINDOW_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:
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:
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_pointer (&info->trigger_event, gdk_event_free);
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 = gdk_threads_add_timeout (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_set (GtkWidget *widget,
GtkWidget *previous_parent)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenu *menu;
GtkWidget *parent;
parent = gtk_widget_get_parent (widget);
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_gadget (menu_item);
if (GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->parent_set)
GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->parent_set (widget, previous_parent);
}
static void
gtk_menu_item_direction_changed (GtkWidget *widget,
GtkTextDirection previous_dir)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
update_node_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
*
* Since: 2.14
*/
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, "xalign", 0.0, 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
*
* Since: 2.16
*/
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.
*
* Since: 2.16
*/
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.
*
* Since: 2.16
*/
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_LABEL (child) &&
gtk_label_get_use_underline (GTK_LABEL (child)) != setting)
{
gtk_label_set_use_underline (GTK_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.
*
* Since: 2.16
*/
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));
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.
*
* Since: 3.0
*/
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_gadget (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
*
* Since: 3.0
*/
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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