/* 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/. */ #define GTK_MENU_INTERNALS #include #include #include "gtkalias.h" #include "gtkaccellabel.h" #include "gtkmain.h" #include "gtkmarshalers.h" #include "gtkmenu.h" #include "gtkmenubar.h" #include "gtkmenuitem.h" #include "gtkseparatormenuitem.h" #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_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 gboolean gtk_menu_item_can_activate_accel (GtkWidget *widget, guint signal_id); static GtkItemClass *parent_class; static guint menu_item_signals[LAST_SIGNAL] = { 0 }; GType gtk_menu_item_get_type (void) { static GType 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; widget_class->can_activate_accel = gtk_menu_item_can_activate_accel; 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] = g_signal_new ("activate", G_OBJECT_CLASS_TYPE (gobject_class), G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GtkMenuItemClass, activate), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); widget_class->activate_signal = menu_item_signals[ACTIVATE]; menu_item_signals[ACTIVATE_ITEM] = g_signal_new ("activate_item", G_OBJECT_CLASS_TYPE (gobject_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GtkMenuItemClass, activate_item), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); menu_item_signals[TOGGLE_SIZE_REQUEST] = g_signal_new ("toggle_size_request", G_OBJECT_CLASS_TYPE (gobject_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GtkMenuItemClass, toggle_size_request), NULL, NULL, _gtk_marshal_VOID__POINTER, G_TYPE_NONE, 1, G_TYPE_POINTER); menu_item_signals[TOGGLE_SIZE_ALLOCATE] = g_signal_new ("toggle_size_allocate", G_OBJECT_CLASS_TYPE (gobject_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GtkMenuItemClass, toggle_size_allocate), NULL, NULL, _gtk_marshal_NONE__INT, G_TYPE_NONE, 1, G_TYPE_INT); gtk_widget_class_install_style_property_parser (widget_class, g_param_spec_enum ("selected-shadow-type", "Selected Shadow Type", "Shadow type when item is selected", GTK_TYPE_SHADOW_TYPE, GTK_SHADOW_NONE, G_PARAM_READABLE), gtk_rc_property_parse_enum); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("horizontal-padding", "Horizontal Padding", "Padding to left and right of the menu item", 0, G_MAXINT, 3, G_PARAM_READABLE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("toggle-spacing", "Icon Spacing", "Space between icon and label", 0, G_MAXINT, 5, G_PARAM_READABLE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("arrow-spacing", "Arrow Spacing", "Space between label and arrow", 0, G_MAXINT, 10, G_PARAM_READABLE)); } 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; if (gtk_widget_get_direction (GTK_WIDGET (menu_item)) == GTK_TEXT_DIR_RTL) menu_item->submenu_direction = GTK_DIRECTION_LEFT; else 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 g_object_new (GTK_TYPE_MENU_ITEM, NULL); } 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 = g_object_new (GTK_TYPE_ACCEL_LABEL, NULL); 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); 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)); g_signal_emit (menu_item, menu_item_signals[ACTIVATE], 0); } 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); } 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_accel_width_foreach (GtkWidget *widget, gpointer data) { guint *width = data; if (GTK_IS_ACCEL_LABEL (widget)) { guint w; w = gtk_accel_label_get_accel_width (GTK_ACCEL_LABEL (widget)); *width = MAX (*width, w); } else if (GTK_IS_CONTAINER (widget)) gtk_container_foreach (GTK_CONTAINER (widget), gtk_menu_item_accel_width_foreach, data); } static gint get_minimum_width (GtkWidget *widget) { PangoContext *context; PangoFontMetrics *metrics; gint height; context = gtk_widget_get_pango_context (widget); metrics = pango_context_get_metrics (context, widget->style->font_desc, pango_context_get_language (context)); height = pango_font_metrics_get_ascent (metrics) + pango_font_metrics_get_descent (metrics); pango_font_metrics_unref (metrics); return PANGO_PIXELS (7 * height); } static void gtk_menu_item_size_request (GtkWidget *widget, GtkRequisition *requisition) { GtkMenuItem *menu_item; GtkBin *bin; guint accel_width; guint horizontal_padding; GtkPackDirection pack_dir; GtkPackDirection child_pack_dir; g_return_if_fail (GTK_IS_MENU_ITEM (widget)); g_return_if_fail (requisition != NULL); gtk_widget_style_get (widget, "horizontal_padding", &horizontal_padding, NULL); bin = GTK_BIN (widget); menu_item = GTK_MENU_ITEM (widget); if (GTK_IS_MENU_BAR (widget->parent)) { pack_dir = gtk_menu_bar_get_pack_direction (GTK_MENU_BAR (widget->parent)); child_pack_dir = gtk_menu_bar_get_child_pack_direction (GTK_MENU_BAR (widget->parent)); } else { pack_dir = GTK_PACK_DIRECTION_LTR; child_pack_dir = GTK_PACK_DIRECTION_LTR; } requisition->width = (GTK_CONTAINER (widget)->border_width + widget->style->xthickness) * 2; requisition->height = (GTK_CONTAINER (widget)->border_width + widget->style->ythickness) * 2; if ((pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL) && (child_pack_dir == GTK_PACK_DIRECTION_LTR || child_pack_dir == GTK_PACK_DIRECTION_RTL)) requisition->width += 2 * horizontal_padding; else if ((pack_dir == GTK_PACK_DIRECTION_TTB || pack_dir == GTK_PACK_DIRECTION_BTT) && (child_pack_dir == GTK_PACK_DIRECTION_TTB || child_pack_dir == GTK_PACK_DIRECTION_BTT)) requisition->height += 2 * horizontal_padding; 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) { guint arrow_spacing; gtk_widget_style_get (widget, "arrow_spacing", &arrow_spacing, NULL); requisition->width += child_requisition.height; requisition->width += arrow_spacing; requisition->width = MAX (requisition->width, get_minimum_width (widget)); } } else { /* separator item */ requisition->height += 4; } 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; GtkTextDirection direction; GtkPackDirection pack_dir; GtkPackDirection child_pack_dir; 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); direction = gtk_widget_get_direction (widget); if (GTK_IS_MENU_BAR (widget->parent)) { pack_dir = gtk_menu_bar_get_pack_direction (GTK_MENU_BAR (widget->parent)); child_pack_dir = gtk_menu_bar_get_child_pack_direction (GTK_MENU_BAR (widget->parent)); } else { pack_dir = GTK_PACK_DIRECTION_LTR; child_pack_dir = GTK_PACK_DIRECTION_LTR; } widget->allocation = *allocation; if (bin->child) { GtkRequisition child_requisition; guint horizontal_padding; gtk_widget_style_get (widget, "horizontal_padding", &horizontal_padding, NULL); child_allocation.x = GTK_CONTAINER (widget)->border_width + widget->style->xthickness; child_allocation.y = GTK_CONTAINER (widget)->border_width + widget->style->ythickness; if ((pack_dir == GTK_PACK_DIRECTION_LTR || pack_dir == GTK_PACK_DIRECTION_RTL) && (child_pack_dir == GTK_PACK_DIRECTION_LTR || child_pack_dir == GTK_PACK_DIRECTION_RTL)) child_allocation.x += horizontal_padding; else if ((pack_dir == GTK_PACK_DIRECTION_TTB || pack_dir == GTK_PACK_DIRECTION_BTT) && (child_pack_dir == GTK_PACK_DIRECTION_TTB || child_pack_dir == GTK_PACK_DIRECTION_BTT)) child_allocation.y += horizontal_padding; child_allocation.width = MAX (1, (gint)allocation->width - child_allocation.x * 2); child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2); 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 += GTK_MENU_ITEM (widget)->toggle_size; child_allocation.width -= GTK_MENU_ITEM (widget)->toggle_size; } else { if ((direction == GTK_TEXT_DIR_LTR) == (child_pack_dir != GTK_PACK_DIRECTION_BTT)) child_allocation.y += GTK_MENU_ITEM (widget)->toggle_size; child_allocation.height -= GTK_MENU_ITEM (widget)->toggle_size; } child_allocation.x += widget->allocation.x; child_allocation.y += widget->allocation.y; gtk_widget_get_child_requisition (bin->child, &child_requisition); if (menu_item->submenu && menu_item->show_submenu_indicator) { if (direction == GTK_TEXT_DIR_RTL) child_allocation.x += child_requisition.height; child_allocation.width -= child_requisition.height; } if (child_allocation.width < 1) child_allocation.width = 1; 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); g_object_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_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); GTK_WIDGET_CLASS (parent_class)->map (widget); gdk_window_show (menu_item->event_window); } 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, selected_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_widget_style_get (widget, "selected_shadow_type", &selected_shadow_type, NULL); gtk_paint_box (widget->style, widget->window, GTK_STATE_PRELIGHT, selected_shadow_type, area, widget, "menuitem", x, y, width, height); } if (menu_item->submenu && menu_item->show_submenu_indicator) { gint arrow_x, arrow_y; gint arrow_size; gint arrow_extent; guint horizontal_padding; GtkTextDirection direction; GtkArrowType arrow_type; PangoContext *context; PangoFontMetrics *metrics; gint ascent, descent; direction = gtk_widget_get_direction (widget); gtk_widget_style_get (widget, "horizontal_padding", &horizontal_padding, NULL); context = gtk_widget_get_pango_context (GTK_BIN (menu_item)->child); metrics = pango_context_get_metrics (context, GTK_WIDGET (GTK_BIN (menu_item)->child)->style->font_desc, pango_context_get_language (context)); ascent = pango_font_metrics_get_ascent (metrics); descent = pango_font_metrics_get_descent (metrics); pango_font_metrics_unref (metrics); arrow_size = PANGO_PIXELS (ascent + descent) - 2 * widget->style->ythickness; arrow_extent = arrow_size * 0.8; shadow_type = GTK_SHADOW_OUT; if (state_type == GTK_STATE_PRELIGHT) shadow_type = GTK_SHADOW_IN; if (direction == GTK_TEXT_DIR_LTR) { arrow_x = x + width - horizontal_padding - arrow_extent; arrow_type = GTK_ARROW_RIGHT; } else { arrow_x = x + horizontal_padding; arrow_type = GTK_ARROW_LEFT; } arrow_y = y + (height - arrow_extent) / 2; gtk_paint_arrow (widget->style, widget->window, state_type, shadow_type, area, widget, "menuitem", arrow_type, TRUE, arrow_x, arrow_y, arrow_extent, arrow_extent); } else if (!GTK_BIN (menu_item)->child) { guint horizontal_padding; gtk_widget_style_get (widget, "horizontal_padding", &horizontal_padding, NULL); gtk_paint_hline (widget->style, widget->window, GTK_STATE_NORMAL, area, widget, "menuitem", widget->allocation.x + horizontal_padding + widget->style->xthickness, widget->allocation.x + widget->allocation.width - horizontal_padding - widget->style->xthickness - 1, widget->allocation.y + (widget->allocation.height - widget->style->ythickness) / 2); } } } 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 gint get_popup_delay (GtkMenuItem *menu_item) { GtkWidget *parent = GTK_WIDGET (menu_item)->parent; if (GTK_IS_MENU_SHELL (parent)) { return _gtk_menu_shell_get_popup_delay (GTK_MENU_SHELL (parent)); } else { gint popup_delay; g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_item)), "gtk-menu-popup-delay", &popup_delay, NULL); return popup_delay; } } 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_MAPPED (menu_item->submenu) || GTK_MENU (menu_item->submenu)->tearoff_active)) { gint popup_delay; if (menu_item->timer) { g_source_remove (menu_item->timer); menu_item->timer = 0; popup_delay = 0; } else popup_delay = get_popup_delay (menu_item); if (popup_delay > 0) { GdkEvent *event = gtk_get_current_event (); menu_item->timer = g_timeout_add (popup_delay, gtk_menu_item_select_timeout, menu_item); if (event && event->type != GDK_BUTTON_PRESS && event->type != GDK_ENTER_NOTIFY) menu_item->timer_from_keypress = TRUE; else menu_item->timer_from_keypress = FALSE; if (event) gdk_event_free (event); } else _gtk_menu_item_popup_submenu (GTK_WIDGET (menu_item)); } gtk_widget_set_state (GTK_WIDGET (menu_item), GTK_STATE_PRELIGHT); gtk_widget_queue_draw (GTK_WIDGET (menu_item)); } 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) { if (menu_item->timer) { g_source_remove (menu_item->timer); menu_item->timer = 0; } else gtk_menu_popdown (GTK_MENU (menu_item->submenu)); } gtk_widget_set_state (GTK_WIDGET (menu_item), GTK_STATE_NORMAL); gtk_widget_queue_draw (GTK_WIDGET (menu_item)); } static gboolean gtk_menu_item_mnemonic_activate (GtkWidget *widget, gboolean group_cycling) { if (group_cycling && widget->parent && GTK_IS_MENU_SHELL (widget->parent) && GTK_MENU_SHELL (widget->parent)->active) { gtk_menu_shell_select_item (GTK_MENU_SHELL (widget->parent), widget); } else g_signal_emit (widget, menu_item_signals[ACTIVATE_ITEM], 0); 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); _gtk_menu_shell_activate (menu_shell); gtk_menu_shell_select_item (GTK_MENU_SHELL (widget->parent), widget); _gtk_menu_item_popup_submenu (widget); gtk_menu_shell_select_first (GTK_MENU_SHELL (menu_item->submenu), TRUE); submenu = GTK_MENU_SHELL (menu_item->submenu); } } } 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) { GtkMenuItem *menu_item; GtkWidget *parent; GDK_THREADS_ENTER (); menu_item = GTK_MENU_ITEM (data); parent = GTK_WIDGET (menu_item)->parent; if ((GTK_IS_MENU_SHELL (parent) && GTK_MENU_SHELL (parent)->active) || (GTK_IS_MENU (parent) && GTK_MENU (parent)->torn_off)) { _gtk_menu_item_popup_submenu (GTK_WIDGET (menu_item)); if (menu_item->timer_from_keypress && menu_item->submenu) GTK_MENU_SHELL (menu_item->submenu)->ignore_enter = TRUE; } GDK_THREADS_LEAVE (); return FALSE; } void _gtk_menu_item_popup_submenu (GtkWidget *widget) { GtkMenuItem *menu_item; menu_item = GTK_MENU_ITEM (widget); if (menu_item->timer) g_source_remove (menu_item->timer); menu_item->timer = 0; if (GTK_WIDGET_IS_SENSITIVE (menu_item->submenu)) gtk_menu_popup (GTK_MENU (menu_item->submenu), widget->parent, widget, gtk_menu_item_position_menu, menu_item, GTK_MENU_SHELL (widget->parent)->button, 0); } static void get_offsets (GtkMenu *menu, gint *horizontal_offset, gint *vertical_offset) { gint vertical_padding; gtk_widget_style_get (GTK_WIDGET (menu), "horizontal_offset", horizontal_offset, "vertical_offset", vertical_offset, "vertical_padding", &vertical_padding, NULL); *vertical_offset -= GTK_WIDGET (menu)->style->ythickness; *vertical_offset -= vertical_padding; } 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; GdkScreen *screen; gint twidth, theight; gint tx, ty; GtkTextDirection direction; GdkRectangle monitor; gint monitor_num; gint horizontal_offset; gint vertical_offset; gint parent_xthickness; 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); if (push_in) *push_in = FALSE; direction = gtk_widget_get_direction (widget); twidth = GTK_WIDGET (menu)->requisition.width; theight = GTK_WIDGET (menu)->requisition.height; screen = gtk_widget_get_screen (GTK_WIDGET (menu)); monitor_num = gdk_screen_get_monitor_at_window (screen, menu_item->event_window); if (monitor_num < 0) monitor_num = 0; gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor); if (!gdk_window_get_origin (widget->window, &tx, &ty)) { g_warning ("Menu not on screen"); return; } tx += widget->allocation.x; ty += widget->allocation.y; get_offsets (menu, &horizontal_offset, &vertical_offset); switch (menu_item->submenu_placement) { case GTK_TOP_BOTTOM: if (direction == GTK_TEXT_DIR_LTR) menu_item->submenu_direction = GTK_DIRECTION_RIGHT; else { menu_item->submenu_direction = GTK_DIRECTION_LEFT; tx += widget->allocation.width - twidth; } if ((ty + widget->allocation.height + theight) <= monitor.y + monitor.height) ty += widget->allocation.height; else if ((ty - theight) >= monitor.y) ty -= theight; else if (monitor.y + monitor.height - (ty + widget->allocation.height) > ty) ty += widget->allocation.height; else ty -= theight; break; case GTK_LEFT_RIGHT: if (GTK_IS_MENU (widget->parent)) parent_menu_item = GTK_MENU (widget->parent)->parent_menu_item; else parent_menu_item = NULL; parent_xthickness = widget->parent->style->xthickness; if (parent_menu_item && !GTK_MENU (widget->parent)->torn_off) menu_item->submenu_direction = GTK_MENU_ITEM (parent_menu_item)->submenu_direction; else if (direction == GTK_TEXT_DIR_LTR) menu_item->submenu_direction = GTK_DIRECTION_RIGHT; else menu_item->submenu_direction = GTK_DIRECTION_LEFT; switch (menu_item->submenu_direction) { case GTK_DIRECTION_LEFT: if ((tx - twidth - parent_xthickness - horizontal_offset) >= monitor.x) tx -= twidth + parent_xthickness + horizontal_offset; else { menu_item->submenu_direction = GTK_DIRECTION_RIGHT; tx += widget->allocation.width + parent_xthickness + horizontal_offset; } break; case GTK_DIRECTION_RIGHT: if ((tx + widget->allocation.width + parent_xthickness + horizontal_offset + twidth) <= monitor.x + monitor.width) tx += widget->allocation.width + parent_xthickness + horizontal_offset; else { menu_item->submenu_direction = GTK_DIRECTION_LEFT; tx -= twidth + parent_xthickness + horizontal_offset; } break; } ty += vertical_offset; /* If the height of the menu doesn't fit we move it upward. */ ty = CLAMP (ty, monitor.y, MAX (monitor.y, monitor.y + monitor.height - theight)); break; } /* If we have negative, tx, here it is because we can't get * the menu all the way on screen. Favor the left portion. */ *x = CLAMP (tx, monitor.x, MAX (monitor.x, monitor.x + monitor.width - twidth)); *y = ty; gtk_menu_set_monitor (menu, monitor_num); } /** * 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 gboolean gtk_menu_item_can_activate_accel (GtkWidget *widget, guint signal_id) { /* Chain to the parent GtkMenu for further checks */ return (GTK_WIDGET_IS_SENSITIVE (widget) && GTK_WIDGET_VISIBLE (widget) && widget->parent && gtk_widget_can_activate_accel (widget->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 = 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, NULL); 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, 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 * 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. * * 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. */ 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 == NULL || (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 && GTK_IS_MENU (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; }