/* 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 . */ /* * 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 #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 "deprecated/gtkactivatable.h" #include "gtkwidgetprivate.h" #include "gtkintl.h" #include "gtksettings.h" #include "gtktypebuiltins.h" #include "a11y/gtkmenuitemaccessible.h" #include "deprecated/gtktearoffmenuitem.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: * |[ * GtkWidget *menu_item = gtk_menu_item_new_with_label ("Example Menu Item"); * * GtkWidget *child = gtk_bin_get_child (GTK_BIN (menu_item)); * gtk_label_set_markup (GTK_LABEL (child), "new label with markup"); * 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 element. * * An example of UI definition fragment with submenus: * |[ * * * * * * ]| * * # CSS nodes * * |[ * menuitem * ├── * ╰── [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_RIGHT_JUSTIFIED, PROP_SUBMENU, PROP_ACCEL_PATH, PROP_LABEL, PROP_USE_UNDERLINE, LAST_PROP, /* activatable properties */ PROP_ACTIVATABLE_RELATED_ACTION = LAST_PROP, PROP_ACTIVATABLE_USE_ACTION_APPEARANCE, PROP_ACTION_NAME, PROP_ACTION_TARGET }; static void gtk_menu_item_dispose (GObject *object); static void gtk_menu_item_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_menu_item_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void gtk_menu_item_destroy (GtkWidget *widget); static void gtk_menu_item_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 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_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_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 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); static guint menu_item_signals[LAST_SIGNAL] = { 0 }; static GParamSpec *menu_item_props[LAST_PROP]; static GtkBuildableIface *parent_buildable_iface; G_GNUC_BEGIN_IGNORE_DEPRECATIONS; 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_ACTIVATABLE, gtk_menu_item_activatable_interface_init) G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTIONABLE, gtk_menu_item_actionable_interface_init)) G_GNUC_END_IGNORE_DEPRECATIONS; 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, cairo_t *cr, 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_draw (priv->arrow_gadget, cr); GTK_WIDGET_CLASS (gtk_menu_item_parent_class)->draw (widget, cr); return FALSE; } static gboolean gtk_menu_item_draw (GtkWidget *widget, cairo_t *cr) { gtk_css_gadget_draw (GTK_MENU_ITEM (widget)->priv->gadget, cr); return FALSE; } 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); if (gtk_widget_get_realized (widget)) gdk_window_move_resize (priv->event_window, allocation->x, allocation->y, allocation->width, allocation->height); 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_get_preferred_width (child, &child_min, &child_nat); 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_get_preferred_height_for_width (child, avail_size, &child_min, &child_nat); } else { gtk_widget_get_preferred_height (child, &child_min, &child_nat); } 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_get_preferred_width (GtkWidget *widget, gint *minimum_size, gint *natural_size) { gtk_css_gadget_get_preferred_size (GTK_MENU_ITEM (widget)->priv->gadget, GTK_ORIENTATION_HORIZONTAL, -1, minimum_size, natural_size, NULL, NULL); } static void gtk_menu_item_get_preferred_height (GtkWidget *widget, gint *minimum_size, gint *natural_size) { gtk_css_gadget_get_preferred_size (GTK_MENU_ITEM (widget)->priv->gadget, GTK_ORIENTATION_VERTICAL, -1, minimum_size, natural_size, NULL, NULL); } static void gtk_menu_item_get_preferred_height_for_width (GtkWidget *widget, gint for_size, gint *minimum_size, gint *natural_size) { gtk_css_gadget_get_preferred_size (GTK_MENU_ITEM (widget)->priv->gadget, GTK_ORIENTATION_VERTICAL, for_size, minimum_size, natural_size, NULL, NULL); } 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; 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:right-justified: * * Sets whether the menu item appears justified * at the right side of a menu bar. * * Since: 2.14 */ menu_item_props[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_EXPLICIT_NOTIFY|G_PARAM_DEPRECATED); /** * 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_ACTIVATABLE_RELATED_ACTION, "related-action"); g_object_class_override_property (gobject_class, PROP_ACTIVATABLE_USE_ACTION_APPEARANCE, "use-action-appearance"); g_object_class_override_property (gobject_class, PROP_ACTION_NAME, "action-name"); g_object_class_override_property (gobject_class, PROP_ACTION_TARGET, "action-target"); /** * GtkMenuItem:selected-shadow-type: * * The shadow type when the item is selected. * * Deprecated: 3.20: Use CSS to determine the shadow; the value of this * style property is ignored. */ gtk_widget_class_install_style_property (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|G_PARAM_DEPRECATED)); /** * GtkMenuItem:horizontal-padding: * * Padding to left and right of the menu item. * * Deprecated: 3.8: use the standard padding CSS property (through objects * like #GtkStyleContext and #GtkCssProvider); the value of this style * property is ignored. */ 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, 0, GTK_PARAM_READABLE | G_PARAM_DEPRECATED)); /** * GtkMenuItem:toggle-spacing: * * Spacing between menu icon and label. * * Deprecated: 3.20: use the standard margin CSS property on the check or * radio nodes; the value of this style property is ignored. */ 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|G_PARAM_DEPRECATED)); /** * GtkMenuItem:arrow-spacing: * * Spacing between menu item label and submenu arrow. * * Deprecated: 3.20: use the standard margin CSS property on the arrow node; * the value of this style property is ignored. */ 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|G_PARAM_DEPRECATED)); /** * GtkMenuItem:arrow-scaling: * * Amount of space used up by the arrow, relative to the menu item's font * size. * * Deprecated: 3.20: use the standard min-width/min-height CSS properties on * the arrow node; the value of this style property is ignored. */ 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|G_PARAM_DEPRECATED)); /** * GtkMenuItem:width-chars: * * The minimum desired width of the menu item in characters. * * Since: 2.14 * * Deprecated: 3.20: Use the standard CSS property min-width; the value of * this style property is ignored. */ 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_PARAM_DEPRECATED)); gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_MENU_ITEM_ACCESSIBLE); gtk_widget_class_set_css_name (widget_class, "menuitem"); gtk_container_class_handle_border_width (container_class); } 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->action = NULL; priv->use_action_appearance = TRUE; 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->right_justify = FALSE; priv->use_action_appearance = TRUE; priv->timer = 0; priv->action = NULL; 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); if (priv->action) { G_GNUC_BEGIN_IGNORE_DEPRECATIONS; gtk_action_disconnect_accelerator (priv->action); gtk_activatable_do_set_related_action (GTK_ACTIVATABLE (menu_item), NULL); G_GNUC_END_IGNORE_DEPRECATIONS; priv->action = NULL; } 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_do_set_right_justified (GtkMenuItem *menu_item, gboolean right_justified) { GtkMenuItemPrivate *priv = menu_item->priv; right_justified = right_justified != FALSE; if (priv->right_justify != right_justified) { priv->right_justify = right_justified; gtk_widget_queue_resize (GTK_WIDGET (menu_item)); g_object_notify_by_pspec (G_OBJECT (menu_item), menu_item_props[PROP_RIGHT_JUSTIFIED]); } } 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_do_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; 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_RIGHT_JUSTIFIED: g_value_set_boolean (value, priv->right_justify); 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; 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 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; G_GNUC_BEGIN_IGNORE_DEPRECATIONS; label = gtk_action_get_label (action); G_GNUC_END_IGNORE_DEPRECATIONS; gtk_menu_item_set_label (menu_item, label); } } /* * gtk_menu_is_empty: * @menu: (allow-none): a #GtkMenu or %NULL * * Determines whether @menu is empty. A menu is considered empty if it * the only visible children are tearoff menu items or “filler” menu * items which were inserted to mark the menu as empty. * * This function is used by #GtkAction. * * Returns: whether @menu is empty. **/ static gboolean gtk_menu_is_empty (GtkWidget *menu) { GList *children, *cur; gboolean result = TRUE; g_return_val_if_fail (menu == NULL || GTK_IS_MENU (menu), TRUE); if (!menu) return FALSE; children = gtk_container_get_children (GTK_CONTAINER (menu)); cur = children; while (cur) { if (gtk_widget_get_visible (cur->data)) { G_GNUC_BEGIN_IGNORE_DEPRECATIONS if (!GTK_IS_TEAROFF_MENU_ITEM (cur->data) && !g_object_get_data (cur->data, "gtk-empty-menu-item")) { result = FALSE; break; } G_GNUC_END_IGNORE_DEPRECATIONS } cur = cur->next; } g_list_free (children); return result; } 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) { G_GNUC_BEGIN_IGNORE_DEPRECATIONS; _gtk_action_sync_menu_visible (action, GTK_WIDGET (menu_item), gtk_menu_is_empty (gtk_menu_item_get_submenu (menu_item))); G_GNUC_END_IGNORE_DEPRECATIONS; } else if (strcmp (property_name, "sensitive") == 0) { G_GNUC_BEGIN_IGNORE_DEPRECATIONS; gtk_widget_set_sensitive (GTK_WIDGET (menu_item), gtk_action_is_sensitive (action)); G_GNUC_END_IGNORE_DEPRECATIONS; } 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))); G_GNUC_BEGIN_IGNORE_DEPRECATIONS; gtk_widget_set_sensitive (GTK_WIDGET (menu_item), gtk_action_is_sensitive (action)); G_GNUC_END_IGNORE_DEPRECATIONS; 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)); G_GNUC_BEGIN_IGNORE_DEPRECATIONS; 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)); } G_GNUC_END_IGNORE_DEPRECATIONS; 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; G_GNUC_BEGIN_IGNORE_DEPRECATIONS; 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); G_GNUC_END_IGNORE_DEPRECATIONS; 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; G_GNUC_BEGIN_IGNORE_DEPRECATIONS; gtk_activatable_sync_action_properties (GTK_ACTIVATABLE (menu_item), priv->action); G_GNUC_END_IGNORE_DEPRECATIONS; } } 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 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); gtk_widget_register_window (widget, priv->event_window); } static void gtk_menu_item_unrealize (GtkWidget *widget) { GtkMenuItem *menu_item = GTK_MENU_ITEM (widget); GtkMenuItemPrivate *priv = menu_item->priv; gtk_widget_unregister_window (widget, priv->event_window); 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 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 (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; G_GNUC_BEGIN_IGNORE_DEPRECATIONS; if (priv->action_helper) gtk_action_helper_activate (priv->action_helper); if (priv->action) gtk_action_activate (priv->action); G_GNUC_END_IGNORE_DEPRECATIONS; } 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); gtk_widget_style_get (priv->submenu, "horizontal-offset", &horizontal_offset, "vertical-offset", &vertical_offset, NULL); context = gtk_widget_get_style_context (parent); gtk_style_context_get_padding (context, gtk_style_context_get_state (context), &parent_padding); context = gtk_widget_get_style_context (priv->submenu); gtk_style_context_get_padding (context, gtk_style_context_get_state (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_IS_MENU (parent) && GTK_MENU (parent)->priv->torn_off)) { gtk_menu_item_real_popup_submenu (GTK_WIDGET (menu_item), info->trigger_event, TRUE); if (info->trigger_event && info->trigger_event->type != GDK_BUTTON_PRESS && info->trigger_event->type != GDK_ENTER_NOTIFY && priv->submenu) GTK_MENU_SHELL (priv->submenu)->priv->ignore_enter = 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); } } /** * 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) { g_return_if_fail (GTK_IS_MENU_ITEM (menu_item)); gtk_menu_item_do_set_right_justified (menu_item, right_justified); } /** * 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. * * Returns: %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); 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, 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, "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_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_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; }