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gtk2/gtk/gtkmenuitem.c
Owen Taylor d36fa9bd2f Fix problem with menus without accel groups, such as the menus for option 
Wed Jan  9 11:13:12 2002  Owen Taylor  <otaylor@redhat.com>

        * gtk/gtkmenuitem.c (_gtk_menu_item_refresh_accel_path):
        Fix problem with menus without accel groups, such as the
        menus for option menus.

        * gtk/gtkpaned.c (gtk_paned_expose): Only conditionalize
        drawing of handle on whether both children are visible,
        not the drawing of the other child!. (#68325, Diego Gonzalez)
2002-01-09 16:15:21 +00:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <string.h>
#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 funcitonality
*
* 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;
}
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