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gtk3/gtk/gtkmenuitem.c
Benjamin Otte b0e836e231 a11y: Merge gtksubmenuitem into gtkmenuitem 
The reason why they were separate is historic, it's not useful to keep
the distinction.
2011-07-18 19:41:07 +02:00

2725 lines
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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include <string.h>
#include "gtkaccellabel.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 "gtkactivatable.h"
#include "gtkwidgetprivate.h"
#include "gtkintl.h"
#include "gtktypebuiltins.h"
#include "a11y/gtkmenuitemaccessible.h"
/**
* 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
* childs for menus. Their function is to correctly handle highlighting,
* alignment, events and submenus.
*
* As it derives from #GtkBin it can hold any valid child widget, altough
* only a few are really useful.
*
* <refsect2 id="GtkMenuItem-BUILDER-UI">
* <title>GtkMenuItem as GtkBuildable</title>
* The GtkMenuItem implementation of the GtkBuildable interface
* supports adding a submenu by specifying "submenu" as the "type"
* attribute of a &lt;child&gt; element.
* <example>
* <title>A UI definition fragment with submenus</title>
* <programlisting><![CDATA[
* <object class="GtkMenuItem">
* <child type="submenu">
* <object class="GtkMenu"/>
* </child>
* </object>
* ]]></programlisting>
* </example>
* </refsect2>
*/
enum {
ACTIVATE,
ACTIVATE_ITEM,
TOGGLE_SIZE_REQUEST,
TOGGLE_SIZE_ALLOCATE,
SELECT,
DESELECT,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_RIGHT_JUSTIFIED,
PROP_SUBMENU,
PROP_ACCEL_PATH,
PROP_LABEL,
PROP_USE_UNDERLINE,
/* activatable properties */
PROP_ACTIVATABLE_RELATED_ACTION,
PROP_ACTIVATABLE_USE_ACTION_APPEARANCE
};
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_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_menu_item_realize (GtkWidget *widget);
static void gtk_menu_item_unrealize (GtkWidget *widget);
static void gtk_menu_item_map (GtkWidget *widget);
static void gtk_menu_item_unmap (GtkWidget *widget);
static gboolean gtk_menu_item_enter (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_menu_item_leave (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_menu_item_draw (GtkWidget *widget,
cairo_t *cr);
static void gtk_menu_item_parent_set (GtkWidget *widget,
GtkWidget *previous_parent);
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_position_menu (GtkMenu *menu,
gint *x,
gint *y,
gboolean *push_in,
gpointer user_data);
static void gtk_menu_item_show_all (GtkWidget *widget);
static void gtk_menu_item_forall (GtkContainer *container,
gboolean include_internals,
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_get_preferred_width (GtkWidget *widget,
gint *minimum_size,
gint *natural_size);
static void gtk_menu_item_get_preferred_height (GtkWidget *widget,
gint *minimum_size,
gint *natural_size);
static void gtk_menu_item_get_preferred_height_for_width (GtkWidget *widget,
gint for_size,
gint *minimum_size,
gint *natural_size);
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_activatable_interface_init (GtkActivatableIface *iface);
static void gtk_menu_item_update (GtkActivatable *activatable,
GtkAction *action,
const gchar *property_name);
static void gtk_menu_item_sync_action_properties (GtkActivatable *activatable,
GtkAction *action);
static void gtk_menu_item_set_related_action (GtkMenuItem *menu_item,
GtkAction *action);
static void gtk_menu_item_set_use_action_appearance (GtkMenuItem *menu_item,
gboolean use_appearance);
/* Declare deprecated function that need a declaration */
#ifdef GTK_DISABLE_DEPRECATED
void gtk_menu_item_set_right_justified (GtkMenuItem *menu_item,
gboolean right_justified);
gboolean gtk_menu_item_get_right_justified (GtkMenuItem *menu_item);
#endif /* GTK_DISABLE_DEPRECATED */
static guint menu_item_signals[LAST_SIGNAL] = { 0 };
static GtkBuildableIface *parent_buildable_iface;
G_DEFINE_TYPE_WITH_CODE (GtkMenuItem, gtk_menu_item, GTK_TYPE_BIN,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_menu_item_buildable_interface_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTIVATABLE,
gtk_menu_item_activatable_interface_init))
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->draw = gtk_menu_item_draw;
widget_class->realize = gtk_menu_item_realize;
widget_class->unrealize = gtk_menu_item_unrealize;
widget_class->map = gtk_menu_item_map;
widget_class->unmap = gtk_menu_item_unmap;
widget_class->enter_notify_event = gtk_menu_item_enter;
widget_class->leave_notify_event = gtk_menu_item_leave;
widget_class->show_all = gtk_menu_item_show_all;
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->get_preferred_width = gtk_menu_item_get_preferred_width;
widget_class->get_preferred_height = gtk_menu_item_get_preferred_height;
widget_class->get_preferred_height_for_width = gtk_menu_item_get_preferred_height_for_width;
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_MENU_ITEM_ACCESSIBLE);
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,
_gtk_marshal_VOID__VOID,
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,
_gtk_marshal_VOID__VOID,
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,
_gtk_marshal_VOID__POINTER,
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,
_gtk_marshal_VOID__INT,
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,
_gtk_marshal_VOID__VOID,
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,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkMenuItem:right-justified:
*
* Sets whether the menu item appears justified
* at the right side of a menu bar.
*
* Since: 2.14
*/
g_object_class_install_property (gobject_class,
PROP_RIGHT_JUSTIFIED,
g_param_spec_boolean ("right-justified",
P_("Right Justified"),
P_("Sets whether the menu item appears justified at the right side of a menu bar"),
FALSE,
GTK_PARAM_READWRITE | G_PARAM_DEPRECATED));
/**
* GtkMenuItem:submenu:
*
* The submenu attached to the menu item, or %NULL if it has none.
*
* Since: 2.12
*/
g_object_class_install_property (gobject_class,
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
*/
g_object_class_install_property (gobject_class,
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
*/
g_object_class_install_property (gobject_class,
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
*/
g_object_class_install_property (gobject_class,
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_object_class_override_property (gobject_class, PROP_ACTIVATABLE_RELATED_ACTION, "related-action");
g_object_class_override_property (gobject_class, PROP_ACTIVATABLE_USE_ACTION_APPEARANCE, "use-action-appearance");
gtk_widget_class_install_style_property_parser (widget_class,
g_param_spec_enum ("selected-shadow-type",
"Selected Shadow Type",
"Shadow type when item is selected",
GTK_TYPE_SHADOW_TYPE,
GTK_SHADOW_NONE,
GTK_PARAM_READABLE),
gtk_rc_property_parse_enum);
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("horizontal-padding",
"Horizontal Padding",
"Padding to left and right of the menu item",
0,
G_MAXINT,
3,
GTK_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("toggle-spacing",
"Icon Spacing",
"Space between icon and label",
0,
G_MAXINT,
5,
GTK_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("arrow-spacing",
"Arrow Spacing",
"Space between label and arrow",
0,
G_MAXINT,
10,
GTK_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_float ("arrow-scaling",
P_("Arrow Scaling"),
P_("Amount of space used up by arrow, relative to the menu item's font size"),
0.0, 2.0, 0.8,
GTK_PARAM_READABLE));
/**
* GtkMenuItem:width-chars:
*
* The minimum desired width of the menu item in characters.
*
* Since: 2.14
*/
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("width-chars",
P_("Width in Characters"),
P_("The minimum desired width of the menu item in characters"),
0, G_MAXINT, 12,
GTK_PARAM_READABLE));
g_type_class_add_private (klass, sizeof (GtkMenuItemPrivate));
}
static void
gtk_menu_item_init (GtkMenuItem *menu_item)
{
GtkStyleContext *context;
GtkMenuItemPrivate *priv;
priv = G_TYPE_INSTANCE_GET_PRIVATE (menu_item,
GTK_TYPE_MENU_ITEM,
GtkMenuItemPrivate);
menu_item->priv = priv;
gtk_widget_set_has_window (GTK_WIDGET (menu_item), FALSE);
priv->action = NULL;
priv->use_action_appearance = TRUE;
menu_item->priv->submenu = NULL;
menu_item->priv->toggle_size = 0;
menu_item->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->right_justify = FALSE;
priv->use_action_appearance = TRUE;
priv->timer = 0;
priv->action = NULL;
context = gtk_widget_get_style_context (GTK_WIDGET (menu_item));
gtk_style_context_add_class (context, GTK_STYLE_CLASS_MENUITEM);
}
/**
* 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;
if (priv->action)
{
gtk_action_disconnect_accelerator (priv->action);
gtk_activatable_do_set_related_action (GTK_ACTIVATABLE (menu_item), NULL);
priv->action = 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_RIGHT_JUSTIFIED:
gtk_menu_item_set_right_justified (menu_item, g_value_get_boolean (value));
break;
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_ACTIVATABLE_RELATED_ACTION:
gtk_menu_item_set_related_action (menu_item, g_value_get_object (value));
break;
case PROP_ACTIVATABLE_USE_ACTION_APPEARANCE:
gtk_menu_item_set_use_action_appearance (menu_item, g_value_get_boolean (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_RIGHT_JUSTIFIED:
g_value_set_boolean (value, gtk_menu_item_get_right_justified (menu_item));
break;
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_ACTIVATABLE_RELATED_ACTION:
g_value_set_object (value, priv->action);
break;
case PROP_ACTIVATABLE_USE_ACTION_APPEARANCE:
g_value_set_boolean (value, priv->use_action_appearance);
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;
}
static void
get_arrow_size (GtkWidget *widget,
GtkWidget *child,
gint *size)
{
GtkStyleContext *style_context;
GtkStateFlags state;
PangoContext *context;
PangoFontMetrics *metrics;
gfloat arrow_scaling;
g_assert (size);
gtk_widget_style_get (widget,
"arrow-scaling", &arrow_scaling,
NULL);
context = gtk_widget_get_pango_context (child);
style_context = gtk_widget_get_style_context (child);
state = gtk_widget_get_state_flags (child);
metrics = pango_context_get_metrics (context,
gtk_style_context_get_font (style_context, state),
pango_context_get_language (context));
*size = (PANGO_PIXELS (pango_font_metrics_get_ascent (metrics) +
pango_font_metrics_get_descent (metrics)));
pango_font_metrics_unref (metrics);
*size = *size * arrow_scaling;
}
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 gint
get_minimum_width (GtkWidget *widget)
{
GtkStyleContext *style_context;
GtkStateFlags state;
PangoContext *context;
PangoFontMetrics *metrics;
gint width;
gint width_chars;
context = gtk_widget_get_pango_context (widget);
style_context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
metrics = pango_context_get_metrics (context,
gtk_style_context_get_font (style_context, state),
pango_context_get_language (context));
width = pango_font_metrics_get_approximate_char_width (metrics);
pango_font_metrics_unref (metrics);
gtk_widget_style_get (widget, "width-chars", &width_chars, NULL);
return PANGO_PIXELS (width_chars * width);
}
static void
gtk_menu_item_get_preferred_width (GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkBin *bin;
GtkWidget *child;
GtkWidget *parent;
guint accel_width;
guint horizontal_padding;
guint border_width;
GtkPackDirection pack_dir;
GtkPackDirection child_pack_dir;
gint min_width, nat_width;
GtkStyleContext *context;
GtkStateFlags state;
GtkBorder padding;
min_width = nat_width = 0;
gtk_widget_style_get (widget,
"horizontal-padding", &horizontal_padding,
NULL);
bin = GTK_BIN (widget);
parent = gtk_widget_get_parent (widget);
if (GTK_IS_MENU_BAR (parent))
{
pack_dir = gtk_menu_bar_get_pack_direction (GTK_MENU_BAR (parent));
child_pack_dir = gtk_menu_bar_get_child_pack_direction (GTK_MENU_BAR (parent));
}
else
{
pack_dir = GTK_PACK_DIRECTION_LTR;
child_pack_dir = GTK_PACK_DIRECTION_LTR;
}
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_get_padding (context, state, &padding);
min_width = (border_width * 2) + padding.left + padding.right;
if ((pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL) &&
(child_pack_dir == GTK_PACK_DIRECTION_LTR || child_pack_dir == GTK_PACK_DIRECTION_RTL))
min_width += 2 * horizontal_padding;
nat_width = min_width;
child = gtk_bin_get_child (bin);
if (child != NULL && gtk_widget_get_visible (child))
{
GtkMenuItemPrivate *priv = menu_item->priv;
gint child_min, child_nat;
gtk_widget_get_preferred_width (child, &child_min, &child_nat);
if ((menu_item->priv->submenu && !GTK_IS_MENU_BAR (parent)) || priv->reserve_indicator)
{
guint arrow_spacing;
gint arrow_size;
gtk_widget_style_get (widget,
"arrow-spacing", &arrow_spacing,
NULL);
get_arrow_size (widget, child, &arrow_size);
gtk_widget_style_get (widget,
"arrow-spacing", &arrow_spacing,
NULL);
get_arrow_size (widget, child, &arrow_size);
min_width += arrow_size;
min_width += arrow_spacing;
min_width = MAX (min_width, get_minimum_width (widget));
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;
if (minimum_size)
*minimum_size = min_width;
if (natural_size)
*natural_size = nat_width;
}
static void
gtk_menu_item_get_preferred_height (GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkBin *bin;
GtkStyleContext *context;
GtkStateFlags state;
GtkBorder padding;
GtkWidget *child;
GtkWidget *parent;
guint accel_width;
guint horizontal_padding;
guint border_width;
GtkPackDirection pack_dir;
GtkPackDirection child_pack_dir;
gint min_height, nat_height;
min_height = nat_height = 0;
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_get_padding (context, state, &padding);
gtk_widget_style_get (widget,
"horizontal-padding", &horizontal_padding,
NULL);
bin = GTK_BIN (widget);
parent = gtk_widget_get_parent (widget);
if (GTK_IS_MENU_BAR (parent))
{
pack_dir = gtk_menu_bar_get_pack_direction (GTK_MENU_BAR (parent));
child_pack_dir = gtk_menu_bar_get_child_pack_direction (GTK_MENU_BAR (parent));
}
else
{
pack_dir = GTK_PACK_DIRECTION_LTR;
child_pack_dir = GTK_PACK_DIRECTION_LTR;
}
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
min_height = (border_width * 2) + padding.top + padding.bottom;
if ((pack_dir == GTK_PACK_DIRECTION_TTB || pack_dir == GTK_PACK_DIRECTION_BTT) &&
(child_pack_dir == GTK_PACK_DIRECTION_TTB || child_pack_dir == GTK_PACK_DIRECTION_BTT))
min_height += 2 * horizontal_padding;
nat_height = min_height;
child = gtk_bin_get_child (bin);
if (child != NULL && gtk_widget_get_visible (child))
{
GtkMenuItemPrivate *priv = menu_item->priv;
gint child_min, child_nat;
gtk_widget_get_preferred_height (child, &child_min, &child_nat);
min_height += child_min;
nat_height += child_nat;
if ((menu_item->priv->submenu && !GTK_IS_MENU_BAR (parent)) || priv->reserve_indicator)
{
gint arrow_size;
get_arrow_size (widget, child, &arrow_size);
min_height = MAX (min_height, arrow_size);
nat_height = MAX (nat_height, arrow_size);
}
}
else /* separator item */
{
gboolean wide_separators;
gint separator_height;
gtk_widget_style_get (widget,
"wide-separators", &wide_separators,
"separator-height", &separator_height,
NULL);
if (wide_separators)
min_height += separator_height + padding.top;
else
min_height += padding.top + padding.bottom;
nat_height = min_height;
}
accel_width = 0;
gtk_container_foreach (GTK_CONTAINER (menu_item),
gtk_menu_item_accel_width_foreach,
&accel_width);
priv->accelerator_width = accel_width;
if (minimum_size)
*minimum_size = min_height;
if (natural_size)
*natural_size = nat_height;
}
static void
gtk_menu_item_get_preferred_height_for_width (GtkWidget *widget,
gint for_size,
gint *minimum_size,
gint *natural_size)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkBin *bin;
GtkStyleContext *context;
GtkStateFlags state;
GtkBorder padding;
GtkWidget *child;
GtkWidget *parent;
guint horizontal_padding;
guint border_width;
GtkPackDirection pack_dir;
GtkPackDirection child_pack_dir;
gint min_height, nat_height;
gint avail_size;
min_height = nat_height = 0;
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_get_padding (context, state, &padding);
gtk_widget_style_get (widget,
"horizontal-padding", &horizontal_padding,
NULL);
bin = GTK_BIN (widget);
parent = gtk_widget_get_parent (widget);
if (GTK_IS_MENU_BAR (parent))
{
pack_dir = gtk_menu_bar_get_pack_direction (GTK_MENU_BAR (parent));
child_pack_dir = gtk_menu_bar_get_child_pack_direction (GTK_MENU_BAR (parent));
}
else
{
pack_dir = GTK_PACK_DIRECTION_LTR;
child_pack_dir = GTK_PACK_DIRECTION_LTR;
}
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
min_height = (border_width * 2) + padding.top + padding.bottom;
avail_size = for_size;
avail_size -= (border_width * 2) + padding.left + padding.right;
if ((pack_dir == GTK_PACK_DIRECTION_TTB || pack_dir == GTK_PACK_DIRECTION_BTT) &&
(child_pack_dir == GTK_PACK_DIRECTION_TTB || child_pack_dir == GTK_PACK_DIRECTION_BTT))
min_height += 2 * horizontal_padding;
if ((pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL) &&
(child_pack_dir == GTK_PACK_DIRECTION_LTR || child_pack_dir == GTK_PACK_DIRECTION_RTL))
avail_size -= 2 * horizontal_padding;
nat_height = min_height;
child = gtk_bin_get_child (bin);
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)
{
guint arrow_spacing;
gtk_widget_style_get (widget,
"arrow-spacing", &arrow_spacing,
NULL);
get_arrow_size (widget, child, &arrow_size);
avail_size -= arrow_size;
avail_size -= arrow_spacing;
}
gtk_widget_get_preferred_height_for_width (child,
avail_size,
&child_min,
&child_nat);
min_height += child_min;
nat_height += child_nat;
if ((priv->submenu && !GTK_IS_MENU_BAR (parent)) || priv->reserve_indicator)
{
min_height = MAX (min_height, arrow_size);
nat_height = MAX (nat_height, arrow_size);
}
}
else /* separator item */
{
gboolean wide_separators;
gint separator_height;
gtk_widget_style_get (widget,
"wide-separators", &wide_separators,
"separator-height", &separator_height,
NULL);
if (wide_separators)
min_height += separator_height + padding.top;
else
min_height += padding.top + padding.bottom;
nat_height = min_height;
}
if (minimum_size)
*minimum_size = min_height;
if (natural_size)
*natural_size = nat_height;
}
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
gtk_menu_item_activatable_interface_init (GtkActivatableIface *iface)
{
iface->update = gtk_menu_item_update;
iface->sync_action_properties = gtk_menu_item_sync_action_properties;
}
static void
activatable_update_label (GtkMenuItem *menu_item, GtkAction *action)
{
GtkWidget *child;
child = gtk_bin_get_child (GTK_BIN (menu_item));
if (GTK_IS_LABEL (child))
{
const gchar *label;
label = gtk_action_get_label (action);
gtk_menu_item_set_label (menu_item, label);
}
}
gboolean _gtk_menu_is_empty (GtkWidget *menu);
static void
gtk_menu_item_update (GtkActivatable *activatable,
GtkAction *action,
const gchar *property_name)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (activatable);
GtkMenuItemPrivate *priv = menu_item->priv;
if (strcmp (property_name, "visible") == 0)
_gtk_action_sync_menu_visible (action, GTK_WIDGET (menu_item),
_gtk_menu_is_empty (gtk_menu_item_get_submenu (menu_item)));
else if (strcmp (property_name, "sensitive") == 0)
gtk_widget_set_sensitive (GTK_WIDGET (menu_item), gtk_action_is_sensitive (action));
else if (priv->use_action_appearance)
{
if (strcmp (property_name, "label") == 0)
activatable_update_label (menu_item, action);
}
}
static void
gtk_menu_item_sync_action_properties (GtkActivatable *activatable,
GtkAction *action)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (activatable);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkWidget *label;
if (!priv->use_action_appearance || !action)
{
label = gtk_bin_get_child (GTK_BIN (menu_item));
if (GTK_IS_ACCEL_LABEL (label))
gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (label), GTK_WIDGET (menu_item));
}
if (!action)
return;
_gtk_action_sync_menu_visible (action, GTK_WIDGET (menu_item),
_gtk_menu_is_empty (gtk_menu_item_get_submenu (menu_item)));
gtk_widget_set_sensitive (GTK_WIDGET (menu_item), gtk_action_is_sensitive (action));
if (priv->use_action_appearance)
{
label = gtk_bin_get_child (GTK_BIN (menu_item));
/* make sure label is a label, deleting it otherwise */
if (label && !GTK_IS_LABEL (label))
{
gtk_container_remove (GTK_CONTAINER (menu_item), label);
label = NULL;
}
/* Make sure that menu_item has a label and that any
* accelerators are set */
gtk_menu_item_ensure_label (menu_item);
gtk_menu_item_set_use_underline (menu_item, TRUE);
/* Make label point to the menu_item's label */
label = gtk_bin_get_child (GTK_BIN (menu_item));
if (GTK_IS_ACCEL_LABEL (label) && gtk_action_get_accel_path (action))
{
gtk_accel_label_set_accel_widget (GTK_ACCEL_LABEL (label), NULL);
gtk_accel_label_set_accel_closure (GTK_ACCEL_LABEL (label),
gtk_action_get_accel_closure (action));
}
activatable_update_label (menu_item, action);
}
}
static void
gtk_menu_item_set_related_action (GtkMenuItem *menu_item,
GtkAction *action)
{
GtkMenuItemPrivate *priv = menu_item->priv;
if (priv->action == action)
return;
if (priv->action)
{
gtk_action_disconnect_accelerator (priv->action);
}
if (action)
{
const gchar *accel_path;
accel_path = gtk_action_get_accel_path (action);
if (accel_path)
{
gtk_action_connect_accelerator (action);
gtk_menu_item_set_accel_path (menu_item, accel_path);
}
}
gtk_activatable_do_set_related_action (GTK_ACTIVATABLE (menu_item), action);
priv->action = action;
}
static void
gtk_menu_item_set_use_action_appearance (GtkMenuItem *menu_item,
gboolean use_appearance)
{
GtkMenuItemPrivate *priv = menu_item->priv;
if (priv->use_action_appearance != use_appearance)
{
priv->use_action_appearance = use_appearance;
gtk_activatable_sync_action_properties (GTK_ACTIVATABLE (menu_item), priv->action);
}
}
/**
* gtk_menu_item_set_submenu:
* @menu_item: a #GtkMenuItem
* @submenu: (allow-none): 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)
{
GtkMenuItemPrivate *priv = menu_item->priv;
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
g_return_if_fail (submenu == NULL || GTK_IS_MENU (submenu));
if (priv->submenu != submenu)
{
if (priv->submenu)
gtk_menu_detach (GTK_MENU (priv->submenu));
if (submenu)
{
priv->submenu = submenu;
gtk_menu_attach_to_widget (GTK_MENU (submenu),
GTK_WIDGET (menu_item),
gtk_menu_item_detacher);
}
if (gtk_widget_get_parent (GTK_WIDGET (menu_item)))
gtk_widget_queue_resize (GTK_WIDGET (menu_item));
g_object_notify (G_OBJECT (menu_item), "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().
*
* Return value: (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;
}
void
gtk_menu_item_select (GtkMenuItem *menu_item)
{
GtkWidget *parent;
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
g_signal_emit (menu_item, menu_item_signals[SELECT], 0);
/* Enable themeing of the parent menu item depending on whether
* something is selected in its submenu
*/
parent = gtk_widget_get_parent (GTK_WIDGET (menu_item));
if (GTK_IS_MENU (parent))
{
GtkMenu *menu = GTK_MENU (parent);
if (menu->priv->parent_menu_item)
gtk_widget_queue_draw (GTK_WIDGET (menu->priv->parent_menu_item));
}
}
/**
* gtk_menu_item_deselect:
* @menu_item: the menu item
*
* Emits the #GtkMenuItem::deselect signal on the given item. Behaves
* exactly like #gtk_item_deselect.
*/
void
gtk_menu_item_deselect (GtkMenuItem *menu_item)
{
GtkWidget *parent;
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
g_signal_emit (menu_item, menu_item_signals[DESELECT], 0);
/* Enable themeing of the parent menu item depending on whether
* something is selected in its submenu
*/
parent = gtk_widget_get_parent (GTK_WIDGET (menu_item));
if (GTK_IS_MENU (parent))
{
GtkMenu *menu = GTK_MENU (parent);
if (menu->priv->parent_menu_item)
gtk_widget_queue_draw (GTK_WIDGET (menu->priv->parent_menu_item));
}
}
/**
* 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: 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_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkBin *bin;
GtkAllocation child_allocation;
GtkTextDirection direction;
GtkPackDirection pack_dir;
GtkPackDirection child_pack_dir;
GtkWidget *child;
GtkWidget *parent;
g_return_if_fail (GTK_IS_MENU_ITEM (widget));
g_return_if_fail (allocation != NULL);
bin = GTK_BIN (widget);
direction = gtk_widget_get_direction (widget);
parent = gtk_widget_get_parent (widget);
if (GTK_IS_MENU_BAR (parent))
{
pack_dir = gtk_menu_bar_get_pack_direction (GTK_MENU_BAR (parent));
child_pack_dir = gtk_menu_bar_get_child_pack_direction (GTK_MENU_BAR (parent));
}
else
{
pack_dir = GTK_PACK_DIRECTION_LTR;
child_pack_dir = GTK_PACK_DIRECTION_LTR;
}
gtk_widget_set_allocation (widget, allocation);
child = gtk_bin_get_child (bin);
if (child)
{
GtkStyleContext *context;
GtkStateFlags state;
GtkBorder padding;
guint horizontal_padding;
guint border_width;
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_get_padding (context, state, &padding);
gtk_widget_style_get (widget,
"horizontal-padding", &horizontal_padding,
NULL);
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
child_allocation.x = border_width + padding.left;
child_allocation.y = border_width + padding.top;
child_allocation.width = allocation->width - (border_width * 2) -
padding.left - padding.right;
child_allocation.height = allocation->height - (border_width * 2) -
padding.top - padding.bottom;
if ((pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL) &&
(child_pack_dir == GTK_PACK_DIRECTION_LTR || child_pack_dir == GTK_PACK_DIRECTION_RTL))
{
child_allocation.x += horizontal_padding;
child_allocation.width -= 2 * horizontal_padding;
}
else if ((pack_dir == GTK_PACK_DIRECTION_TTB || pack_dir == GTK_PACK_DIRECTION_BTT) &&
(child_pack_dir == GTK_PACK_DIRECTION_TTB || child_pack_dir == GTK_PACK_DIRECTION_BTT))
{
child_allocation.y += horizontal_padding;
child_allocation.height -= 2 * horizontal_padding;
}
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;
}
child_allocation.x += allocation->x;
child_allocation.y += allocation->y;
if ((priv->submenu && !GTK_IS_MENU_BAR (parent)) || priv->reserve_indicator)
{
guint arrow_spacing;
gint arrow_size;
gtk_widget_style_get (widget,
"arrow-spacing", &arrow_spacing,
NULL);
get_arrow_size (widget, child, &arrow_size);
if (direction == GTK_TEXT_DIR_RTL)
child_allocation.x += arrow_size + arrow_spacing;
child_allocation.width -= arrow_size + arrow_spacing;
}
if (child_allocation.width < 1)
child_allocation.width = 1;
gtk_widget_size_allocate (child, &child_allocation);
}
if (gtk_widget_get_realized (widget))
gdk_window_move_resize (priv->event_window,
allocation->x, allocation->y,
allocation->width, allocation->height);
if (priv->submenu)
gtk_menu_reposition (GTK_MENU (priv->submenu));
}
static void
gtk_menu_item_realize (GtkWidget *widget)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkAllocation allocation;
GdkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
gtk_widget_set_realized (widget, TRUE);
window = gtk_widget_get_parent_window (widget);
gtk_widget_set_window (widget, window);
g_object_ref (window);
gtk_widget_get_allocation (widget, &allocation);
attributes.x = allocation.x;
attributes.y = allocation.y;
attributes.width = allocation.width;
attributes.height = allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_ONLY;
attributes.event_mask = (gtk_widget_get_events (widget) |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK |
GDK_POINTER_MOTION_MASK);
attributes_mask = GDK_WA_X | GDK_WA_Y;
priv->event_window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (priv->event_window, widget);
}
static void
gtk_menu_item_unrealize (GtkWidget *widget)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
gdk_window_set_user_data (priv->event_window, NULL);
gdk_window_destroy (priv->event_window);
priv->event_window = NULL;
GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->unrealize (widget);
}
static void
gtk_menu_item_map (GtkWidget *widget)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->map (widget);
gdk_window_show (priv->event_window);
}
static void
gtk_menu_item_unmap (GtkWidget *widget)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
gdk_window_hide (priv->event_window);
GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->unmap (widget);
}
static gboolean
gtk_menu_item_enter (GtkWidget *widget,
GdkEventCrossing *event)
{
g_return_val_if_fail (event != NULL, FALSE);
return gtk_widget_event (gtk_widget_get_parent (widget), (GdkEvent *) event);
}
static gboolean
gtk_menu_item_leave (GtkWidget *widget,
GdkEventCrossing *event)
{
g_return_val_if_fail (event != NULL, FALSE);
return gtk_widget_event (gtk_widget_get_parent (widget), (GdkEvent*) event);
}
static gboolean
gtk_menu_item_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkStateFlags state;
GtkStyleContext *context;
GtkBorder padding;
GtkWidget *child, *parent;
gint x, y, w, h, width, height;
guint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
state = gtk_widget_get_state_flags (widget);
context = gtk_widget_get_style_context (widget);
width = gtk_widget_get_allocated_width (widget);
height = gtk_widget_get_allocated_height (widget);
x = border_width;
y = border_width;
w = width - border_width * 2;
h = height - border_width * 2;
child = gtk_bin_get_child (GTK_BIN (menu_item));
parent = gtk_widget_get_parent (widget);
gtk_style_context_save (context);
gtk_style_context_set_state (context, state);
gtk_style_context_get_padding (context, state, &padding);
if (GTK_IS_MENU_BAR (parent))
gtk_style_context_add_class (context, GTK_STYLE_CLASS_MENUBAR);
if (child && (state & GTK_STATE_FLAG_PRELIGHT))
{
gtk_render_background (context, cr, x, y, w, h);
gtk_render_frame (context, cr, x, y, w, h);
}
if (priv->submenu && !GTK_IS_MENU_BAR (parent))
{
gint arrow_x, arrow_y;
gint arrow_size;
guint horizontal_padding;
GtkTextDirection direction;
gdouble angle;
direction = gtk_widget_get_direction (widget);
gtk_widget_style_get (widget,
"horizontal-padding", &horizontal_padding,
NULL);
get_arrow_size (widget, child, &arrow_size);
if (direction == GTK_TEXT_DIR_LTR)
{
arrow_x = x + w - horizontal_padding - arrow_size;
angle = G_PI / 2;
}
else
{
arrow_x = x + horizontal_padding;
angle = (3 * G_PI) / 2;
}
arrow_y = y + (h - arrow_size) / 2;
gtk_render_arrow (context, cr, angle, arrow_x, arrow_y, arrow_size);
}
else if (!child)
{
gboolean wide_separators;
gint separator_height;
guint horizontal_padding;
gtk_widget_style_get (widget,
"wide-separators", &wide_separators,
"separator-height", &separator_height,
"horizontal-padding", &horizontal_padding,
NULL);
if (wide_separators)
gtk_render_frame (context, cr,
horizontal_padding + padding.left,
(height - separator_height - padding.top) / 2,
width - (2 * horizontal_padding) - padding.left - padding.right,
separator_height);
else
gtk_render_line (context, cr,
horizontal_padding + padding.left,
(height - padding.top) / 2,
width - horizontal_padding - padding.right - 1,
(height - padding.top) / 2);
}
GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->draw (widget, cr);
gtk_style_context_restore (context);
return FALSE;
}
/**
* gtk_menu_item_select:
* @menu_item: the menu item
*
* Emits the #GtkMenuItem::select signal on the given item. Behaves
* exactly like #gtk_item_select.
*/
static void
gtk_real_menu_item_select (GtkMenuItem *menu_item)
{
GtkMenuItemPrivate *priv = menu_item->priv;
gboolean touchscreen_mode;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_item)),
"gtk-touchscreen-mode", &touchscreen_mode,
NULL);
if (!touchscreen_mode && priv->submenu &&
(!gtk_widget_get_mapped (priv->submenu) ||
GTK_MENU (priv->submenu)->priv->tearoff_active))
{
_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)
gtk_action_activate (priv->action);
}
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 (G_OBJECT (menu_item), "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
gtk_menu_item_real_popup_submenu (GtkWidget *widget,
gboolean remember_exact_time)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkWidget *parent;
parent = gtk_widget_get_parent (widget);
if (gtk_widget_is_sensitive (priv->submenu) && parent)
{
gboolean take_focus;
GtkMenuPositionFunc menu_position_func;
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);
}
/* gtk_menu_item_position_menu positions the submenu from the
* menuitems position. If the menuitem doesn't have a window,
* that doesn't work. In that case we use the default
* positioning function instead which places the submenu at the
* mouse cursor.
*/
if (gtk_widget_get_window (widget))
menu_position_func = gtk_menu_item_position_menu;
else
menu_position_func = NULL;
gtk_menu_popup (GTK_MENU (priv->submenu),
parent,
widget,
menu_position_func,
menu_item,
GTK_MENU_SHELL (parent)->priv->button,
0);
}
/* Enable themeing of the parent menu item depending on whether
* its submenu is shown or not.
*/
gtk_widget_queue_draw (widget);
}
static gint
gtk_menu_item_popup_timeout (gpointer data)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (data);
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_IS_MENU (parent) && GTK_MENU (parent)->priv->torn_off))
{
gtk_menu_item_real_popup_submenu (GTK_WIDGET (menu_item), TRUE);
if (priv->timer_from_keypress && priv->submenu)
GTK_MENU_SHELL (priv->submenu)->priv->ignore_enter = TRUE;
}
priv->timer = 0;
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
{
gint popup_delay;
g_object_get (gtk_widget_get_settings (widget),
"gtk-menu-popup-delay", &popup_delay,
NULL);
return 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)
{
GdkEvent *event = gtk_get_current_event ();
priv->timer = gdk_threads_add_timeout (popup_delay,
gtk_menu_item_popup_timeout,
menu_item);
if (event &&
event->type != GDK_BUTTON_PRESS &&
event->type != GDK_ENTER_NOTIFY)
priv->timer_from_keypress = TRUE;
else
priv->timer_from_keypress = FALSE;
if (event)
gdk_event_free (event);
return;
}
}
gtk_menu_item_real_popup_submenu (widget, 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 void
get_offsets (GtkMenu *menu,
gint *horizontal_offset,
gint *vertical_offset)
{
gint vertical_padding;
gint horizontal_padding;
GtkStyleContext *context;
GtkStateFlags state;
GtkBorder padding;
gtk_widget_style_get (GTK_WIDGET (menu),
"horizontal-offset", horizontal_offset,
"vertical-offset", vertical_offset,
"horizontal-padding", &horizontal_padding,
"vertical-padding", &vertical_padding,
NULL);
context = gtk_widget_get_style_context (GTK_WIDGET (menu));
state = gtk_widget_get_state_flags (GTK_WIDGET (menu));
gtk_style_context_get_padding (context, state, &padding);
*vertical_offset -= padding.top;
*vertical_offset -= vertical_padding;
*horizontal_offset += horizontal_padding;
}
static void
gtk_menu_item_position_menu (GtkMenu *menu,
gint *x,
gint *y,
gboolean *push_in,
gpointer user_data)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (user_data);
GtkMenuItemPrivate *priv = menu_item->priv;
GtkAllocation allocation;
GtkWidget *widget;
GtkMenuItem *parent_menu_item;
GtkWidget *parent;
GdkScreen *screen;
gint twidth, theight;
gint tx, ty;
GtkTextDirection direction;
GdkRectangle monitor;
gint monitor_num;
gint horizontal_offset;
gint vertical_offset;
gint available_left, available_right;
GtkStyleContext *context;
GtkStateFlags state;
GtkBorder parent_padding;
g_return_if_fail (menu != NULL);
g_return_if_fail (x != NULL);
g_return_if_fail (y != NULL);
widget = GTK_WIDGET (user_data);
if (push_in)
*push_in = FALSE;
direction = gtk_widget_get_direction (widget);
twidth = gtk_widget_get_allocated_width (GTK_WIDGET (menu));
theight = gtk_widget_get_allocated_height (GTK_WIDGET (menu));
screen = gtk_widget_get_screen (GTK_WIDGET (menu));
monitor_num = gdk_screen_get_monitor_at_window (screen, priv->event_window);
if (monitor_num < 0)
monitor_num = 0;
gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
if (!gdk_window_get_origin (gtk_widget_get_window (widget), &tx, &ty))
{
g_warning ("Menu not on screen");
return;
}
gtk_widget_get_allocation (widget, &allocation);
tx += allocation.x;
ty += allocation.y;
get_offsets (menu, &horizontal_offset, &vertical_offset);
available_left = tx - monitor.x;
available_right = monitor.x + monitor.width - (tx + allocation.width);
parent = gtk_widget_get_parent (widget);
if (GTK_IS_MENU_BAR (parent))
{
priv->from_menubar = TRUE;
}
else if (GTK_IS_MENU (parent))
{
if (GTK_MENU (parent)->priv->parent_menu_item)
priv->from_menubar = GTK_MENU_ITEM (GTK_MENU (parent)->priv->parent_menu_item)->priv->from_menubar;
else
priv->from_menubar = FALSE;
}
else
{
priv->from_menubar = FALSE;
}
switch (priv->submenu_placement)
{
case GTK_TOP_BOTTOM:
if (direction == GTK_TEXT_DIR_LTR)
priv->submenu_direction = GTK_DIRECTION_RIGHT;
else
{
priv->submenu_direction = GTK_DIRECTION_LEFT;
tx += allocation.width - twidth;
}
if ((ty + allocation.height + theight) <= monitor.y + monitor.height)
ty += allocation.height;
else if ((ty - theight) >= monitor.y)
ty -= theight;
else if (monitor.y + monitor.height - (ty + allocation.height) > ty)
ty += allocation.height;
else
ty -= theight;
break;
case GTK_LEFT_RIGHT:
if (GTK_IS_MENU (parent))
parent_menu_item = GTK_MENU_ITEM (GTK_MENU (parent)->priv->parent_menu_item);
else
parent_menu_item = NULL;
context = gtk_widget_get_style_context (parent);
state = gtk_widget_get_state_flags (parent);
gtk_style_context_get_padding (context, state, &parent_padding);
if (parent_menu_item && !GTK_MENU (parent)->priv->torn_off)
{
priv->submenu_direction = parent_menu_item->priv->submenu_direction;
}
else
{
if (direction == GTK_TEXT_DIR_LTR)
priv->submenu_direction = GTK_DIRECTION_RIGHT;
else
priv->submenu_direction = GTK_DIRECTION_LEFT;
}
switch (priv->submenu_direction)
{
case GTK_DIRECTION_LEFT:
if (tx - twidth - parent_padding.left - horizontal_offset >= monitor.x ||
available_left >= available_right)
tx -= twidth + parent_padding.left + horizontal_offset;
else
{
priv->submenu_direction = GTK_DIRECTION_RIGHT;
tx += allocation.width + parent_padding.right + horizontal_offset;
}
break;
case GTK_DIRECTION_RIGHT:
if (tx + allocation.width + parent_padding.right + horizontal_offset + twidth <= monitor.x + monitor.width ||
available_right >= available_left)
tx += allocation.width + parent_padding.right + horizontal_offset;
else
{
priv->submenu_direction = GTK_DIRECTION_LEFT;
tx -= twidth + parent_padding.left + horizontal_offset;
}
break;
}
ty += vertical_offset;
/* If the height of the menu doesn't fit we move it upward. */
ty = CLAMP (ty, monitor.y, MAX (monitor.y, monitor.y + monitor.height - theight));
break;
}
/* If we have negative, tx, here it is because we can't get
* the menu all the way on screen. Favor the left portion.
*/
*x = CLAMP (tx, monitor.x, MAX (monitor.x, monitor.x + monitor.width - twidth));
*y = ty;
gtk_menu_set_monitor (menu, monitor_num);
if (!gtk_widget_get_visible (menu->priv->toplevel))
{
gtk_window_set_type_hint (GTK_WINDOW (menu->priv->toplevel), priv->from_menubar?
GDK_WINDOW_TYPE_HINT_DROPDOWN_MENU : GDK_WINDOW_TYPE_HINT_POPUP_MENU);
}
}
/**
* gtk_menu_item_set_right_justified:
* @menu_item: a #GtkMenuItem.
* @right_justified: if %TRUE the menu item will appear at the
* far right if added to a menu bar
*
* Sets whether the menu item appears justified at the right
* side of a menu bar. This was traditionally done for "Help"
* menu items, but is now considered a bad idea. (If the widget
* layout is reversed for a right-to-left language like Hebrew
* or Arabic, right-justified-menu-items appear at the left.)
*
* Deprecated: 3.2: If you insist on using it, use
* gtk_widget_set_hexpand() and gtk_widget_set_halign().
**/
void
gtk_menu_item_set_right_justified (GtkMenuItem *menu_item,
gboolean right_justified)
{
GtkMenuItemPrivate *priv = menu_item->priv;
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
right_justified = right_justified != FALSE;
if (priv->right_justify != right_justified)
{
priv->right_justify = right_justified;
gtk_widget_queue_resize (GTK_WIDGET (menu_item));
}
}
/**
* gtk_menu_item_get_right_justified:
* @menu_item: a #GtkMenuItem
*
* Gets whether the menu item appears justified at the right
* side of the menu bar.
*
* Return value: %TRUE if the menu item will appear at the
* far right if added to a menu bar.
*
* Deprecated: 3.2: See gtk_menu_item_set_right_justified()
**/
gboolean
gtk_menu_item_get_right_justified (GtkMenuItem *menu_item)
{
g_return_val_if_fail (GTK_IS_MENU_ITEM (menu_item), FALSE);
return menu_item->priv->right_justify;
}
static void
gtk_menu_item_show_all (GtkWidget *widget)
{
GtkMenuItem *menu_item = GTK_MENU_ITEM (widget);
GtkMenuItemPrivate *priv = menu_item->priv;
/* show children including submenu */
if (priv->submenu)
gtk_widget_show_all (priv->submenu);
gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_show_all, NULL);
gtk_widget_show (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);
if (GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->parent_set)
GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->parent_set (widget, previous_parent);
}
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: 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,
gboolean include_internals,
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_misc_set_alignment (GTK_MISC (accel_label), 0.0, 0.5);
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_widget_show (accel_label);
}
}
/**
* 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_set_use_underline (GTK_LABEL (child), setting);
g_object_notify (G_OBJECT (menu_item), "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.
*
* Return value: %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;
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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