/* 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 #include "gtkaccellabel.h" #include "gtkmain.h" #include "gtkmarshalers.h" #include "gtkmenu.h" #include "gtkmenubar.h" #include "gtkmenuitem.h" #include "gtktearoffmenuitem.h" #include "gtkseparatormenuitem.h" #include "gtksignal.h" #define BORDER_SPACING 3 #define SELECT_TIMEOUT 75 #define MENU_ITEM_CLASS(w) GTK_MENU_ITEM_CLASS (GTK_OBJECT (w)->klass) enum { ACTIVATE, ACTIVATE_ITEM, TOGGLE_SIZE_REQUEST, TOGGLE_SIZE_ALLOCATE, LAST_SIGNAL }; static void gtk_menu_item_class_init (GtkMenuItemClass *klass); static void gtk_menu_item_init (GtkMenuItem *menu_item); static void gtk_menu_item_destroy (GtkObject *object); static void gtk_menu_item_finalize (GObject *object); static void gtk_menu_item_size_request (GtkWidget *widget, GtkRequisition *requisition); 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 void gtk_menu_item_paint (GtkWidget *widget, GdkRectangle *area); static gint gtk_menu_item_expose (GtkWidget *widget, GdkEventExpose *event); static void gtk_menu_item_parent_set (GtkWidget *widget, GtkWidget *previous_parent); static void gtk_real_menu_item_select (GtkItem *item); static void gtk_real_menu_item_deselect (GtkItem *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 gint gtk_menu_item_select_timeout (gpointer data); static void gtk_menu_item_popup_submenu (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_hide_all (GtkWidget *widget); static void gtk_menu_item_forall (GtkContainer *container, gboolean include_internals, GtkCallback callback, gpointer callback_data); static GtkItemClass *parent_class; static guint menu_item_signals[LAST_SIGNAL] = { 0 }; static guint32 last_submenu_deselect_time = 0; GtkType gtk_menu_item_get_type (void) { static GtkType menu_item_type = 0; if (!menu_item_type) { static const GTypeInfo menu_item_info = { sizeof (GtkMenuItemClass), NULL, /* base_init */ NULL, /* base_finalize */ (GClassInitFunc) gtk_menu_item_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GtkMenuItem), 16, /* n_preallocs */ (GInstanceInitFunc) gtk_menu_item_init, }; menu_item_type = g_type_register_static (GTK_TYPE_ITEM, "GtkMenuItem", &menu_item_info, 0); } return menu_item_type; } static void gtk_menu_item_class_init (GtkMenuItemClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass); GtkItemClass *item_class = GTK_ITEM_CLASS (klass); parent_class = g_type_class_peek_parent (klass); gobject_class->finalize = gtk_menu_item_finalize; object_class->destroy = gtk_menu_item_destroy; widget_class->size_request = gtk_menu_item_size_request; widget_class->size_allocate = gtk_menu_item_size_allocate; widget_class->expose_event = gtk_menu_item_expose; 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->show_all = gtk_menu_item_show_all; widget_class->hide_all = gtk_menu_item_hide_all; widget_class->mnemonic_activate = gtk_menu_item_mnemonic_activate; widget_class->parent_set = gtk_menu_item_parent_set; container_class->forall = gtk_menu_item_forall; item_class->select = gtk_real_menu_item_select; item_class->deselect = gtk_real_menu_item_deselect; klass->activate = NULL; 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->hide_on_activate = TRUE; menu_item_signals[ACTIVATE] = gtk_signal_new ("activate", GTK_RUN_FIRST | GTK_RUN_ACTION, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkMenuItemClass, activate), _gtk_marshal_VOID__VOID, GTK_TYPE_NONE, 0); widget_class->activate_signal = menu_item_signals[ACTIVATE]; menu_item_signals[ACTIVATE_ITEM] = gtk_signal_new ("activate_item", GTK_RUN_FIRST, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkMenuItemClass, activate_item), gtk_signal_default_marshaller, GTK_TYPE_NONE, 0); menu_item_signals[TOGGLE_SIZE_REQUEST] = gtk_signal_new ("toggle_size_request", GTK_RUN_FIRST, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkMenuItemClass, toggle_size_request), _gtk_marshal_VOID__POINTER, GTK_TYPE_NONE, 1, GTK_TYPE_POINTER); menu_item_signals[TOGGLE_SIZE_ALLOCATE] = gtk_signal_new ("toggle_size_allocate", GTK_RUN_FIRST, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkMenuItemClass, toggle_size_allocate), _gtk_marshal_NONE__INT, GTK_TYPE_NONE, 1, GTK_TYPE_INT); } static void gtk_menu_item_init (GtkMenuItem *menu_item) { GTK_WIDGET_SET_FLAGS (menu_item, GTK_NO_WINDOW); menu_item->submenu = NULL; menu_item->toggle_size = 0; menu_item->accelerator_width = 0; menu_item->show_submenu_indicator = FALSE; menu_item->submenu_direction = GTK_DIRECTION_RIGHT; menu_item->submenu_placement = GTK_TOP_BOTTOM; menu_item->right_justify = FALSE; menu_item->timer = 0; } GtkWidget* gtk_menu_item_new (void) { return GTK_WIDGET (gtk_type_new (gtk_menu_item_get_type ())); } GtkWidget* gtk_menu_item_new_with_label (const gchar *label) { GtkWidget *menu_item; GtkWidget *accel_label; menu_item = gtk_menu_item_new (); accel_label = gtk_accel_label_new (label); 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), menu_item); gtk_widget_show (accel_label); return menu_item; } /** * gtk_menu_item_new_with_mnemonic: * @label: The text of the button, with an underscore in front of the * mnemonic character * @returns: a new #GtkMenuItem * * 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. **/ GtkWidget* gtk_menu_item_new_with_mnemonic (const gchar *label) { GtkWidget *menu_item; GtkWidget *accel_label; menu_item = gtk_menu_item_new (); accel_label = gtk_type_new (GTK_TYPE_ACCEL_LABEL); gtk_label_set_text_with_mnemonic (GTK_LABEL (accel_label), label); 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), menu_item); gtk_widget_show (accel_label); return menu_item; } static void gtk_menu_item_destroy (GtkObject *object) { GtkMenuItem *menu_item; g_return_if_fail (GTK_IS_MENU_ITEM (object)); menu_item = GTK_MENU_ITEM (object); if (menu_item->submenu) gtk_widget_destroy (menu_item->submenu); GTK_OBJECT_CLASS (parent_class)->destroy (object); } static void gtk_menu_item_finalize (GObject *object) { GtkMenuItem *menu_item = GTK_MENU_ITEM (object); g_free (menu_item->accel_path); G_OBJECT_CLASS (parent_class)->finalize (object); } static void gtk_menu_item_detacher (GtkWidget *widget, GtkMenu *menu) { GtkMenuItem *menu_item; g_return_if_fail (GTK_IS_MENU_ITEM (widget)); menu_item = GTK_MENU_ITEM (widget); g_return_if_fail (menu_item->submenu == (GtkWidget*) menu); menu_item->submenu = NULL; } void gtk_menu_item_set_submenu (GtkMenuItem *menu_item, GtkWidget *submenu) { g_return_if_fail (GTK_IS_MENU_ITEM (menu_item)); if (menu_item->submenu != submenu) { gtk_menu_item_remove_submenu (menu_item); menu_item->submenu = submenu; gtk_menu_attach_to_widget (GTK_MENU (submenu), GTK_WIDGET (menu_item), gtk_menu_item_detacher); if (GTK_WIDGET (menu_item)->parent) gtk_widget_queue_resize (GTK_WIDGET (menu_item)); } } /** * 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: 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->submenu; } void gtk_menu_item_remove_submenu (GtkMenuItem *menu_item) { g_return_if_fail (GTK_IS_MENU_ITEM (menu_item)); if (menu_item->submenu) gtk_menu_detach (GTK_MENU (menu_item->submenu)); } void _gtk_menu_item_set_placement (GtkMenuItem *menu_item, GtkSubmenuPlacement placement) { g_return_if_fail (GTK_IS_MENU_ITEM (menu_item)); menu_item->submenu_placement = placement; } void gtk_menu_item_select (GtkMenuItem *menu_item) { g_return_if_fail (GTK_IS_MENU_ITEM (menu_item)); gtk_item_select (GTK_ITEM (menu_item)); } void gtk_menu_item_deselect (GtkMenuItem *menu_item) { g_return_if_fail (GTK_IS_MENU_ITEM (menu_item)); gtk_item_deselect (GTK_ITEM (menu_item)); } void gtk_menu_item_activate (GtkMenuItem *menu_item) { g_return_if_fail (GTK_IS_MENU_ITEM (menu_item)); gtk_signal_emit (GTK_OBJECT (menu_item), menu_item_signals[ACTIVATE]); } void gtk_menu_item_toggle_size_request (GtkMenuItem *menu_item, gint *requisition) { g_return_if_fail (GTK_IS_MENU_ITEM (menu_item)); gtk_signal_emit (GTK_OBJECT (menu_item), menu_item_signals[TOGGLE_SIZE_REQUEST], requisition); } void gtk_menu_item_toggle_size_allocate (GtkMenuItem *menu_item, gint allocation) { g_return_if_fail (GTK_IS_MENU_ITEM (menu_item)); gtk_signal_emit (GTK_OBJECT (menu_item), menu_item_signals[TOGGLE_SIZE_ALLOCATE], allocation); } 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_size_request (GtkWidget *widget, GtkRequisition *requisition) { GtkMenuItem *menu_item; GtkBin *bin; guint accel_width; g_return_if_fail (GTK_IS_MENU_ITEM (widget)); g_return_if_fail (requisition != NULL); bin = GTK_BIN (widget); menu_item = GTK_MENU_ITEM (widget); requisition->width = (GTK_CONTAINER (widget)->border_width + widget->style->xthickness + BORDER_SPACING) * 2; requisition->height = (GTK_CONTAINER (widget)->border_width + widget->style->ythickness) * 2; if (bin->child && GTK_WIDGET_VISIBLE (bin->child)) { GtkRequisition child_requisition; gtk_widget_size_request (bin->child, &child_requisition); requisition->width += child_requisition.width; requisition->height += child_requisition.height; } if (menu_item->submenu && menu_item->show_submenu_indicator) requisition->width += 21; accel_width = 0; gtk_container_foreach (GTK_CONTAINER (menu_item), gtk_menu_item_accel_width_foreach, &accel_width); menu_item->accelerator_width = accel_width; } static void gtk_menu_item_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkMenuItem *menu_item; GtkBin *bin; GtkAllocation child_allocation; g_return_if_fail (GTK_IS_MENU_ITEM (widget)); g_return_if_fail (allocation != NULL); menu_item = GTK_MENU_ITEM (widget); bin = GTK_BIN (widget); widget->allocation = *allocation; if (bin->child) { child_allocation.x = (GTK_CONTAINER (widget)->border_width + widget->style->xthickness + BORDER_SPACING); child_allocation.y = (GTK_CONTAINER (widget)->border_width + widget->style->ythickness); child_allocation.width = MAX (1, (gint)allocation->width - child_allocation.x * 2); child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2); child_allocation.x += GTK_MENU_ITEM (widget)->toggle_size; child_allocation.width -= GTK_MENU_ITEM (widget)->toggle_size; child_allocation.x += widget->allocation.x; child_allocation.y += widget->allocation.y; if (menu_item->submenu && menu_item->show_submenu_indicator) child_allocation.width -= 21; gtk_widget_size_allocate (bin->child, &child_allocation); } if (GTK_WIDGET_REALIZED (widget)) gdk_window_move_resize (menu_item->event_window, allocation->x, allocation->y, allocation->width, allocation->height); if (menu_item->submenu) gtk_menu_reposition (GTK_MENU (menu_item->submenu)); } static void gtk_menu_item_realize (GtkWidget *widget) { GtkMenuItem *menu_item = GTK_MENU_ITEM (widget); GdkWindowAttr attributes; gint attributes_mask; GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); widget->window = gtk_widget_get_parent_window (widget); gdk_window_ref (widget->window); attributes.x = widget->allocation.x; attributes.y = widget->allocation.y; attributes.width = widget->allocation.width; attributes.height = widget->allocation.height; attributes.window_type = GDK_WINDOW_CHILD; attributes.wclass = GDK_INPUT_ONLY; attributes.event_mask = (gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK | 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; menu_item->event_window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask); gdk_window_set_user_data (menu_item->event_window, widget); widget->style = gtk_style_attach (widget->style, widget->window); } static void gtk_menu_item_unrealize (GtkWidget *widget) { GtkMenuItem *menu_item = GTK_MENU_ITEM (widget); gdk_window_set_user_data (menu_item->event_window, NULL); gdk_window_destroy (menu_item->event_window); menu_item->event_window = NULL; if (GTK_WIDGET_CLASS (parent_class)->unrealize) (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget); } static void gtk_menu_item_map (GtkWidget *widget) { GtkMenuItem *menu_item = GTK_MENU_ITEM (widget); gdk_window_show (menu_item->event_window); GTK_WIDGET_CLASS (parent_class)->map (widget); } static void gtk_menu_item_unmap (GtkWidget *widget) { GtkMenuItem *menu_item = GTK_MENU_ITEM (widget); gdk_window_hide (menu_item->event_window); GTK_WIDGET_CLASS (parent_class)->unmap (widget); } static void gtk_menu_item_paint (GtkWidget *widget, GdkRectangle *area) { GtkMenuItem *menu_item; GtkStateType state_type; GtkShadowType shadow_type; gint width, height; gint x, y; gint border_width = GTK_CONTAINER (widget)->border_width; if (GTK_WIDGET_DRAWABLE (widget)) { menu_item = GTK_MENU_ITEM (widget); state_type = widget->state; x = widget->allocation.x + border_width; y = widget->allocation.y + border_width; width = widget->allocation.width - border_width * 2; height = widget->allocation.height - border_width * 2; if ((state_type == GTK_STATE_PRELIGHT) && (GTK_BIN (menu_item)->child)) gtk_paint_box (widget->style, widget->window, GTK_STATE_PRELIGHT, GTK_SHADOW_OUT, area, widget, "menuitem", x, y, width, height); if (menu_item->submenu && menu_item->show_submenu_indicator) { shadow_type = GTK_SHADOW_OUT; if (state_type == GTK_STATE_PRELIGHT) shadow_type = GTK_SHADOW_IN; gtk_paint_arrow (widget->style, widget->window, state_type, shadow_type, area, widget, "menuitem", GTK_ARROW_RIGHT, TRUE, x + width - 15, y + height / 2 - 5, 10, 10); } else if (!GTK_BIN (menu_item)->child) { gtk_paint_hline (widget->style, widget->window, GTK_STATE_NORMAL, area, widget, "menuitem", widget->allocation.x, widget->allocation.width, widget->allocation.y); } } } static gint gtk_menu_item_expose (GtkWidget *widget, GdkEventExpose *event) { g_return_val_if_fail (GTK_IS_MENU_ITEM (widget), FALSE); g_return_val_if_fail (event != NULL, FALSE); if (GTK_WIDGET_DRAWABLE (widget)) { gtk_menu_item_paint (widget, &event->area); (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event); } return FALSE; } static void gtk_real_menu_item_select (GtkItem *item) { GtkMenuItem *menu_item; g_return_if_fail (GTK_IS_MENU_ITEM (item)); menu_item = GTK_MENU_ITEM (item); /* if (menu_item->submenu && !GTK_WIDGET_VISIBLE (menu_item->submenu))*/ if (menu_item->submenu) { guint32 etime; GdkEvent *event = gtk_get_current_event (); etime = event ? gdk_event_get_time (event) : GDK_CURRENT_TIME; if (etime >= last_submenu_deselect_time && last_submenu_deselect_time + SELECT_TIMEOUT > etime) menu_item->timer = gtk_timeout_add (SELECT_TIMEOUT - (etime - last_submenu_deselect_time), gtk_menu_item_select_timeout, menu_item); else gtk_menu_item_popup_submenu (menu_item); if (event) gdk_event_free(event); } gtk_widget_set_state (GTK_WIDGET (menu_item), GTK_STATE_PRELIGHT); gtk_widget_draw (GTK_WIDGET (menu_item), NULL); } static void gtk_real_menu_item_deselect (GtkItem *item) { GtkMenuItem *menu_item; g_return_if_fail (GTK_IS_MENU_ITEM (item)); menu_item = GTK_MENU_ITEM (item); if (menu_item->submenu) { guint32 etime; GdkEvent *event = gtk_get_current_event (); if (menu_item->timer) { gtk_timeout_remove (menu_item->timer); menu_item->timer = 0; } else gtk_menu_popdown (GTK_MENU (menu_item->submenu)); etime = event ? gdk_event_get_time (event) : GDK_CURRENT_TIME; if (etime > last_submenu_deselect_time) last_submenu_deselect_time = etime; if (event) gdk_event_free(event); } gtk_widget_set_state (GTK_WIDGET (menu_item), GTK_STATE_NORMAL); gtk_widget_draw (GTK_WIDGET (menu_item), NULL); } static gboolean gtk_menu_item_mnemonic_activate (GtkWidget *widget, gboolean group_cycling) { if (group_cycling) { if (widget->parent && GTK_IS_MENU_SHELL (widget->parent)) gtk_menu_shell_select_item (GTK_MENU_SHELL (widget->parent), widget); } else gtk_signal_emit (GTK_OBJECT (widget), menu_item_signals[ACTIVATE_ITEM]); return TRUE; } static void gtk_real_menu_item_activate_item (GtkMenuItem *menu_item) { GtkWidget *widget; GtkMenuShell *submenu; g_return_if_fail (GTK_IS_MENU_ITEM (menu_item)); widget = GTK_WIDGET (menu_item); if (widget->parent && GTK_IS_MENU_SHELL (widget->parent)) { if (menu_item->submenu == NULL) gtk_menu_shell_activate_item (GTK_MENU_SHELL (widget->parent), widget, TRUE); else { GtkMenuShell *menu_shell = GTK_MENU_SHELL (widget->parent); if (!menu_shell->active) { gtk_grab_add (GTK_WIDGET (menu_shell)); menu_shell->have_grab = TRUE; menu_shell->active = TRUE; } gtk_menu_shell_select_item (GTK_MENU_SHELL (widget->parent), widget); gtk_menu_item_popup_submenu (widget); submenu = GTK_MENU_SHELL (menu_item->submenu); if (submenu->children) { if (submenu->children->next && GTK_IS_TEAROFF_MENU_ITEM (submenu->children->data)) gtk_menu_shell_select_item (submenu, submenu->children->next->data); else gtk_menu_shell_select_item (submenu, submenu->children->data); } } } } 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->toggle_size = allocation; } static gint gtk_menu_item_select_timeout (gpointer data) { GDK_THREADS_ENTER (); gtk_menu_item_popup_submenu (data); GDK_THREADS_LEAVE (); return FALSE; } static void gtk_menu_item_popup_submenu (gpointer data) { GtkMenuItem *menu_item; menu_item = GTK_MENU_ITEM (data); menu_item->timer = 0; if (GTK_WIDGET_IS_SENSITIVE (menu_item->submenu)) { gtk_menu_popup (GTK_MENU (menu_item->submenu), GTK_WIDGET (menu_item)->parent, GTK_WIDGET (menu_item), gtk_menu_item_position_menu, menu_item, GTK_MENU_SHELL (GTK_WIDGET (menu_item)->parent)->button, 0); } } static void gtk_menu_item_position_menu (GtkMenu *menu, gint *x, gint *y, gboolean *push_in, gpointer user_data) { GtkMenuItem *menu_item; GtkWidget *widget; GtkWidget *parent_menu_item; gint screen_width; gint screen_height; gint twidth, theight; gint tx, ty; g_return_if_fail (menu != NULL); g_return_if_fail (x != NULL); g_return_if_fail (y != NULL); menu_item = GTK_MENU_ITEM (user_data); widget = GTK_WIDGET (user_data); twidth = GTK_WIDGET (menu)->requisition.width; theight = GTK_WIDGET (menu)->requisition.height; screen_width = gdk_screen_width (); screen_height = gdk_screen_height (); if (!gdk_window_get_origin (widget->window, &tx, &ty)) { g_warning ("Menu not on screen"); return; } tx += widget->allocation.x; ty += widget->allocation.y; switch (menu_item->submenu_placement) { case GTK_TOP_BOTTOM: if ((ty + widget->allocation.height + theight) <= screen_height) ty += widget->allocation.height; else if ((ty - theight) >= 0) ty -= theight; else if (screen_height - (ty + widget->allocation.height) > ty) ty += widget->allocation.height; else ty -= theight; break; case GTK_LEFT_RIGHT: menu_item->submenu_direction = GTK_DIRECTION_RIGHT; parent_menu_item = GTK_MENU (widget->parent)->parent_menu_item; if (parent_menu_item) menu_item->submenu_direction = GTK_MENU_ITEM (parent_menu_item)->submenu_direction; switch (menu_item->submenu_direction) { case GTK_DIRECTION_LEFT: if ((tx - twidth) >= 0) tx -= twidth; else { menu_item->submenu_direction = GTK_DIRECTION_RIGHT; tx += widget->allocation.width - 5; } break; case GTK_DIRECTION_RIGHT: if ((tx + widget->allocation.width + twidth - 5) <= screen_width) tx += widget->allocation.width - 5; else { menu_item->submenu_direction = GTK_DIRECTION_LEFT; tx -= twidth; } break; } ty += widget->allocation.height / 4; /* If the height of the menu doesn't fit we move it upward. */ ty = CLAMP (ty, 0, MAX (0, screen_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, 0, MAX (0, screen_width - twidth)); *y = ty; } /** * 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.) **/ void gtk_menu_item_set_right_justified (GtkMenuItem *menu_item, gboolean right_justified) { g_return_if_fail (GTK_IS_MENU_ITEM (menu_item)); right_justified = right_justified != FALSE; if (right_justified != menu_item->right_justify) { menu_item->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. **/ 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->right_justify; } static void gtk_menu_item_show_all (GtkWidget *widget) { GtkMenuItem *menu_item; g_return_if_fail (GTK_IS_MENU_ITEM (widget)); menu_item = GTK_MENU_ITEM (widget); /* show children including submenu */ if (menu_item->submenu) gtk_widget_show_all (menu_item->submenu); gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_show_all, NULL); gtk_widget_show (widget); } static void gtk_menu_item_hide_all (GtkWidget *widget) { GtkMenuItem *menu_item; g_return_if_fail (GTK_IS_MENU_ITEM (widget)); gtk_widget_hide (widget); menu_item = GTK_MENU_ITEM (widget); /* hide children including submenu */ gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_hide_all, NULL); if (menu_item->submenu) gtk_widget_hide_all (menu_item->submenu); } 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 = GTK_IS_MENU (widget->parent) ? GTK_MENU (widget->parent) : NULL; if (menu) _gtk_menu_item_refresh_accel_path (menu_item, menu->accel_path, menu->accel_group, TRUE); if (GTK_WIDGET_CLASS (parent_class)->parent_set) GTK_WIDGET_CLASS (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) { 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); if (!path) /* no active accel_path yet */ { path = menu_item->accel_path; if (!path && prefix) { gchar *postfix = NULL; /* try to construct one from label text */ gtk_container_foreach (GTK_CONTAINER (menu_item), gtk_menu_item_accel_name_foreach, &postfix); menu_item->accel_path = postfix ? g_strconcat (prefix, "/", postfix, NULL) : NULL; path = menu_item->accel_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: accelerator path, corresponding to this menu item's functionality * * 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 * persistant storage (see gtk_accel_map_save() on this). * To setup 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. */ void gtk_menu_item_set_accel_path (GtkMenuItem *menu_item, const gchar *accel_path) { GtkWidget *widget; g_return_if_fail (GTK_IS_MENU_ITEM (menu_item)); g_return_if_fail (accel_path && accel_path[0] == '<' && strchr (accel_path, '/')); widget = GTK_WIDGET (menu_item); /* store new path */ g_free (menu_item->accel_path); menu_item->accel_path = g_strdup (accel_path); /* forget accelerators associated with old path */ _gtk_widget_set_accel_path (widget, NULL, NULL); /* install accelerators associated with new path */ if (widget->parent) { GtkMenu *menu = GTK_MENU (widget->parent); if (menu->accel_group) _gtk_menu_item_refresh_accel_path (GTK_MENU_ITEM (widget), NULL, menu->accel_group, FALSE); } } static void gtk_menu_item_forall (GtkContainer *container, gboolean include_internals, GtkCallback callback, gpointer callback_data) { GtkBin *bin; GtkMenuItem *menu_item; g_return_if_fail (GTK_IS_MENU_ITEM (container)); g_return_if_fail (callback != NULL); bin = GTK_BIN (container); menu_item = GTK_MENU_ITEM (container); if (bin->child) callback (bin->child, callback_data); } gboolean _gtk_menu_item_is_selectable (GtkWidget *menu_item) { if ((!GTK_BIN (menu_item)->child && G_OBJECT_TYPE (menu_item) == GTK_TYPE_MENU_ITEM) || GTK_IS_SEPARATOR_MENU_ITEM (menu_item) || !GTK_WIDGET_IS_SENSITIVE (menu_item) || !GTK_WIDGET_VISIBLE (menu_item)) return FALSE; return TRUE; }