/* 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/. */ /** * SECTION:gtkmenubar * @Title: GtkMenuBar * @Short_description: A subclass of GtkMenuShell which holds GtkMenuItem widgets * @See_also: #GtkMenuShell, #GtkMenu, #GtkMenuItem * * The #GtkMenuBar is a subclass of #GtkMenuShell which contains one or * more #GtkMenuItems. The result is a standard menu bar which can hold * many menu items. * * # CSS nodes * * GtkMenuBar has a single CSS node with name menubar. */ #include "config.h" #include "gtkmenubar.h" #include "gtkbindings.h" #include "gtkmain.h" #include "gtkmarshalers.h" #include "gtkmenuitemprivate.h" #include "gtkmenuprivate.h" #include "gtkmenushellprivate.h" #include "gtksettings.h" #include "gtksizerequest.h" #include "gtkwindow.h" #include "gtkcontainerprivate.h" #include "gtkintl.h" #include "gtkprivate.h" #include "gtktypebuiltins.h" #include "gtkwidgetprivate.h" #define MENU_BAR_POPUP_DELAY 0 typedef struct _GtkMenuBarPrivate GtkMenuBarPrivate; typedef struct _GtkMenuBarClass GtkMenuBarClass; struct _GtkMenuBar { GtkMenuShell menu_shell; }; struct _GtkMenuBarClass { GtkMenuShellClass parent_class; }; static void gtk_menu_bar_measure (GtkWidget *widget, GtkOrientation orientation, int for_size, int *minimum, int *natural, int *minimum_baseline, int *natural_baseline); static void gtk_menu_bar_size_allocate (GtkWidget *widget, int width, int height, int baseline); static void gtk_menu_bar_root (GtkWidget *widget); static void gtk_menu_bar_unroot (GtkWidget *widget); static gint gtk_menu_bar_get_popup_delay (GtkMenuShell *menu_shell); static void gtk_menu_bar_move_current (GtkMenuShell *menu_shell, GtkMenuDirectionType direction); G_DEFINE_TYPE (GtkMenuBar, gtk_menu_bar, GTK_TYPE_MENU_SHELL) static void gtk_menu_bar_class_init (GtkMenuBarClass *class) { GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); GtkMenuShellClass *menu_shell_class = GTK_MENU_SHELL_CLASS (class); GtkBindingSet *binding_set; widget_class->measure = gtk_menu_bar_measure; widget_class->size_allocate = gtk_menu_bar_size_allocate; widget_class->root = gtk_menu_bar_root; widget_class->unroot = gtk_menu_bar_unroot; menu_shell_class->submenu_placement = GTK_TOP_BOTTOM; menu_shell_class->get_popup_delay = gtk_menu_bar_get_popup_delay; menu_shell_class->move_current = gtk_menu_bar_move_current; binding_set = gtk_binding_set_by_class (class); gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_PREV); gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_PREV); gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_NEXT); gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_NEXT); gtk_binding_entry_add_signal (binding_set, GDK_KEY_Up, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_PARENT); gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Up, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_PARENT); gtk_binding_entry_add_signal (binding_set, GDK_KEY_Down, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_CHILD); gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Down, 0, "move-current", 1, GTK_TYPE_MENU_DIRECTION_TYPE, GTK_MENU_DIR_CHILD); gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_MENU_BAR); gtk_widget_class_set_css_name (widget_class, I_("menubar")); } static void gtk_menu_bar_init (GtkMenuBar *menu_bar) { } /** * gtk_menu_bar_new: * * Creates a new #GtkMenuBar * * Returns: the new menu bar, as a #GtkWidget */ GtkWidget* gtk_menu_bar_new (void) { return g_object_new (GTK_TYPE_MENU_BAR, NULL); } static void gtk_menu_bar_measure (GtkWidget *widget, GtkOrientation orientation, int for_size, int *minimum, int *natural, int *minimum_baseline, int *natural_baseline) { GtkMenuShell *menu_shell; GtkWidget *child; GList *children; gboolean use_toggle_size, use_maximize; gint child_minimum, child_natural; *minimum = 0; *natural = 0; menu_shell = GTK_MENU_SHELL (widget); children = menu_shell->priv->children; use_toggle_size = (orientation == GTK_ORIENTATION_HORIZONTAL); use_maximize = (orientation == GTK_ORIENTATION_VERTICAL); while (children) { child = children->data; children = children->next; if (gtk_widget_get_visible (child)) { gtk_widget_measure (child, orientation, for_size, &child_minimum, &child_natural, NULL, NULL); if (use_toggle_size) { gint toggle_size; gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child), &toggle_size); child_minimum += toggle_size; child_natural += toggle_size; } if (use_maximize) { *minimum = MAX (*minimum, child_minimum); *natural = MAX (*natural, child_natural); } else { *minimum += child_minimum; *natural += child_natural; } } } } static void gtk_menu_bar_size_allocate (GtkWidget *widget, int width, int height, int baseline) { GtkMenuShell *menu_shell; GtkWidget *child; GList *children; GtkAllocation remaining_space; GArray *requested_sizes; gint toggle_size; guint i; int size; gboolean ltr = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR); menu_shell = GTK_MENU_SHELL (widget); if (!menu_shell->priv->children) return; remaining_space = (GtkAllocation) {0, 0, width, height}; requested_sizes = g_array_new (FALSE, FALSE, sizeof (GtkRequestedSize)); size = remaining_space.width; for (children = menu_shell->priv->children; children; children = children->next) { GtkRequestedSize request; child = children->data; if (!gtk_widget_get_visible (child)) continue; request.data = child; gtk_widget_measure (child, GTK_ORIENTATION_HORIZONTAL, remaining_space.height, &request.minimum_size, &request.natural_size, NULL, NULL); gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child), &toggle_size); request.minimum_size += toggle_size; request.natural_size += toggle_size; gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child), toggle_size); g_array_append_val (requested_sizes, request); size -= request.minimum_size; } size = gtk_distribute_natural_allocation (size, requested_sizes->len, (GtkRequestedSize *) requested_sizes->data); for (i = 0; i < requested_sizes->len; i++) { GtkAllocation child_allocation = remaining_space; GtkRequestedSize *request = &g_array_index (requested_sizes, GtkRequestedSize, i); child_allocation.width = request->minimum_size; remaining_space.width -= request->minimum_size; if (i + 1 == requested_sizes->len && GTK_IS_MENU_ITEM (request->data) && GTK_MENU_ITEM (request->data)->priv->right_justify) ltr = !ltr; if (ltr) remaining_space.x += request->minimum_size; else child_allocation.x += remaining_space.width; gtk_widget_size_allocate (request->data, &child_allocation, -1); } g_array_free (requested_sizes, TRUE); } static GList * get_menu_bars (GtkWindow *window) { return g_object_get_data (G_OBJECT (window), "gtk-menu-bar-list"); } GList * _gtk_menu_bar_get_viewable_menu_bars (GtkWindow *window) { GList *menu_bars; GList *viewable_menu_bars = NULL; for (menu_bars = get_menu_bars (window); menu_bars; menu_bars = menu_bars->next) { GtkWidget *widget = menu_bars->data; gboolean viewable = TRUE; while (widget) { if (!gtk_widget_get_mapped (widget)) viewable = FALSE; widget = gtk_widget_get_parent (widget); } if (viewable) viewable_menu_bars = g_list_prepend (viewable_menu_bars, menu_bars->data); } return g_list_reverse (viewable_menu_bars); } static void set_menu_bars (GtkWindow *window, GList *menubars) { g_object_set_data (G_OBJECT (window), I_("gtk-menu-bar-list"), menubars); } static void add_to_window (GtkWindow *window, GtkMenuBar *menubar) { GList *menubars = get_menu_bars (window); set_menu_bars (window, g_list_prepend (menubars, menubar)); } static void remove_from_window (GtkWindow *window, GtkMenuBar *menubar) { GList *menubars = get_menu_bars (window); menubars = g_list_remove (menubars, menubar); set_menu_bars (window, menubars); } static void gtk_menu_bar_root (GtkWidget *widget) { GtkMenuBar *menubar = GTK_MENU_BAR (widget); GtkWidget *toplevel; GTK_WIDGET_CLASS (gtk_menu_bar_parent_class)->root (widget); toplevel = GTK_WIDGET (gtk_widget_get_root (widget)); add_to_window (GTK_WINDOW (toplevel), menubar); } static void gtk_menu_bar_unroot (GtkWidget *widget) { GtkMenuBar *menubar = GTK_MENU_BAR (widget); GtkWidget *toplevel; toplevel = GTK_WIDGET (gtk_widget_get_root (widget)); remove_from_window (GTK_WINDOW (toplevel), menubar); GTK_WIDGET_CLASS (gtk_menu_bar_parent_class)->unroot (widget); } /** * _gtk_menu_bar_cycle_focus: * @menubar: a #GtkMenuBar * @dir: direction in which to cycle the focus * * Move the focus between menubars in the toplevel. **/ void _gtk_menu_bar_cycle_focus (GtkMenuBar *menubar, GtkDirectionType dir) { GtkWidget *toplevel = GTK_WIDGET (gtk_widget_get_root (GTK_WIDGET (menubar))); GtkMenuItem *to_activate = NULL; if (GTK_IS_WINDOW (toplevel)) { GList *tmp_menubars = _gtk_menu_bar_get_viewable_menu_bars (GTK_WINDOW (toplevel)); GList *l; GPtrArray *menubars; gboolean found; guint index; menubars = g_ptr_array_sized_new (g_list_length (tmp_menubars)); for (l = tmp_menubars; l; l = l->next) g_ptr_array_add (menubars, l->data); gtk_widget_focus_sort (toplevel, dir, menubars); found = g_ptr_array_find (menubars, menubar, &index); if (found && index < menubars->len - 1) { GtkWidget *next = g_ptr_array_index (menubars, index + 1); GtkMenuShell *new_menushell = GTK_MENU_SHELL (next); if (new_menushell->priv->children) to_activate = new_menushell->priv->children->data; } g_ptr_array_free (menubars, TRUE); } gtk_menu_shell_cancel (GTK_MENU_SHELL (menubar)); if (to_activate) g_signal_emit_by_name (to_activate, "activate_item"); } static gint gtk_menu_bar_get_popup_delay (GtkMenuShell *menu_shell) { return MENU_BAR_POPUP_DELAY; } static void gtk_menu_bar_move_current (GtkMenuShell *menu_shell, GtkMenuDirectionType direction) { GtkMenuBar *menubar = GTK_MENU_BAR (menu_shell); if (gtk_widget_get_direction (GTK_WIDGET (menubar)) == GTK_TEXT_DIR_RTL) { switch (direction) { case GTK_MENU_DIR_PREV: direction = GTK_MENU_DIR_NEXT; break; case GTK_MENU_DIR_NEXT: direction = GTK_MENU_DIR_PREV; break; case GTK_MENU_DIR_PARENT: case GTK_MENU_DIR_CHILD: default: break; } } GTK_MENU_SHELL_CLASS (gtk_menu_bar_parent_class)->move_current (menu_shell, direction); } /** * gtk_menu_bar_new_from_model: * @model: a #GMenuModel * * Creates a new #GtkMenuBar and populates it with menu items * and submenus according to @model. * * The created menu items are connected to actions found in the * #GtkApplicationWindow to which the menu bar belongs - typically * by means of being contained within the #GtkApplicationWindows * widget hierarchy. * * Returns: a new #GtkMenuBar */ GtkWidget * gtk_menu_bar_new_from_model (GMenuModel *model) { GtkWidget *menubar; g_return_val_if_fail (G_IS_MENU_MODEL (model), NULL); menubar = gtk_menu_bar_new (); gtk_menu_shell_bind_model (GTK_MENU_SHELL (menubar), model, NULL, FALSE); return menubar; }