/* 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 Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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 1997-1999. 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 <ctype.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtkbindings.h>
#include <gtk/gtklabel.h>
#include <gtk/gtkmain.h>
#include "gtkmenu.h"
#include <gtk/gtkmenuitem.h>
#include <gtk/gtksignal.h>
#include <gtk/gtkwindow.h>
#define MENU_ITEM_CLASS(w) GTK_MENU_ITEM_CLASS (GTK_OBJECT (w)->klass)
#define MENU_NEEDS_RESIZE(m) GTK_MENU_SHELL (m)->menu_flag
#define SUBMENU_NAV_REGION_PADDING 2
#define SUBMENU_NAV_HYSTERESIS_TIMEOUT 333
#define MENU_SCROLL_ARROW_HEIGHT 16
#define MENU_SCROLL_TIMEOUT 200
typedef struct _GtkMenuAttachData GtkMenuAttachData;
struct _GtkMenuAttachData
{
GtkWidget *attach_widget;
GtkMenuDetachFunc detacher;
};
static void gtk_menu_class_init (GtkMenuClass *klass);
static void gtk_menu_init (GtkMenu *menu);
static void gtk_menu_destroy (GtkObject *object);
static void gtk_menu_realize (GtkWidget *widget);
static void gtk_menu_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_menu_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_menu_paint (GtkWidget *widget);
static void gtk_menu_draw (GtkWidget *widget,
GdkRectangle *area);
static gboolean gtk_menu_expose (GtkWidget *widget,
GdkEventExpose *event);
static gboolean gtk_menu_key_press (GtkWidget *widget,
GdkEventKey *event);
static gboolean gtk_menu_motion_notify (GtkWidget *widget,
GdkEventMotion *event);
static gboolean gtk_menu_enter_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_menu_leave_notify (GtkWidget *widget,
GdkEventCrossing *event);
static void gtk_menu_stop_navigating_submenu (GtkMenu *menu);
static gboolean gtk_menu_stop_navigating_submenu_cb (gpointer user_data);
static gboolean gtk_menu_navigating_submenu (GtkMenu *menu,
gint event_x,
gint event_y);
static void gtk_menu_set_submenu_navigation_region (GtkMenu *menu,
GtkMenuItem *menu_item,
GdkEventCrossing *event);
static GdkRegion *gtk_menu_get_navigation_region (GtkMenu *menu);
static void gtk_menu_set_navigation_region (GtkMenu *menu,
GdkRegion *region);
static guint gtk_menu_get_navigation_timeout (GtkMenu *menu);
static void gtk_menu_set_navigation_timeout (GtkMenu *menu,
guint timeout);
static void gtk_menu_deactivate (GtkMenuShell *menu_shell);
static void gtk_menu_show_all (GtkWidget *widget);
static void gtk_menu_hide_all (GtkWidget *widget);
static void gtk_menu_position (GtkMenu *menu);
static void gtk_menu_top_position (GtkMenu *menu,
gint x,
gint y,
gint width,
gint height);
static void gtk_menu_reparent (GtkMenu *menu,
GtkWidget *new_parent,
gboolean unrealize);
static void gtk_menu_set_scrolling (GtkMenu *menu,
gboolean scroll_up,
gboolean scroll_down);
static gboolean gtk_menu_scroll_up (GtkMenu *menu,
guint scroll_count);
static gboolean gtk_menu_scroll_down (GtkMenu *menu,
guint scroll_count);
static gboolean gtk_menu_timeout_up (gpointer data);
static gboolean gtk_menu_timeout_down (gpointer data);
static void gtk_menu_remove (GtkContainer *menu,
GtkWidget *widget);
static GtkMenuShellClass *parent_class = NULL;
static const gchar *attach_data_key = "gtk-menu-attach-data";
static GQuark quark_uline_accel_group = 0;
static const gchar *navigation_region_key = "gtk-menu-navigation_region";
static GQuark navigation_region_key_id = 0;
static const gchar *navigation_timeout_key = "gtk-menu-navigation_timeout";
static GQuark navigation_timeout_key_id = 0;
GtkType
gtk_menu_get_type (void)
{
static GtkType menu_type = 0;
if (!menu_type)
{
static const GtkTypeInfo menu_info =
{
"GtkMenu",
(guint)sizeof (GtkMenu),
(guint)sizeof (GtkMenuClass),
(GtkClassInitFunc) gtk_menu_class_init,
(GtkObjectInitFunc) gtk_menu_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
menu_type = gtk_type_unique (gtk_menu_shell_get_type (), &menu_info);
}
return menu_type;
}
static void
gtk_menu_class_init (GtkMenuClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
GtkMenuShellClass *menu_shell_class;
GtkBindingSet *binding_set;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
container_class = (GtkContainerClass*) class;
menu_shell_class = (GtkMenuShellClass*) class;
parent_class = gtk_type_class (gtk_menu_shell_get_type ());
object_class->destroy = gtk_menu_destroy;
widget_class->realize = gtk_menu_realize;
widget_class->draw = gtk_menu_draw;
widget_class->size_request = gtk_menu_size_request;
widget_class->size_allocate = gtk_menu_size_allocate;
widget_class->expose_event = gtk_menu_expose;
widget_class->key_press_event = gtk_menu_key_press;
widget_class->motion_notify_event = gtk_menu_motion_notify;
widget_class->show_all = gtk_menu_show_all;
widget_class->hide_all = gtk_menu_hide_all;
widget_class->enter_notify_event = gtk_menu_enter_notify;
widget_class->leave_notify_event = gtk_menu_leave_notify;
container_class->remove = gtk_menu_remove;
menu_shell_class->submenu_placement = GTK_LEFT_RIGHT;
menu_shell_class->deactivate = gtk_menu_deactivate;
binding_set = gtk_binding_set_by_class (class);
gtk_binding_entry_add_signal (binding_set,
GDK_Up, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PREV);
gtk_binding_entry_add_signal (binding_set,
GDK_Down, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_NEXT);
gtk_binding_entry_add_signal (binding_set,
GDK_Left, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PARENT);
gtk_binding_entry_add_signal (binding_set,
GDK_Right, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_CHILD);
}
static gboolean
gtk_menu_window_event (GtkWidget *window,
GdkEvent *event,
GtkWidget *menu)
{
gboolean handled = FALSE;
gtk_widget_ref (window);
gtk_widget_ref (menu);
switch (event->type)
{
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
(void)gtk_widget_event (menu, event);
handled = TRUE;
break;
default:
break;
}
gtk_widget_unref (window);
gtk_widget_unref (menu);
return handled;
}
static void
gtk_menu_init (GtkMenu *menu)
{
menu->parent_menu_item = NULL;
menu->old_active_menu_item = NULL;
menu->accel_group = NULL;
menu->position_func = NULL;
menu->position_func_data = NULL;
menu->first_scroll_child = -1;
menu->last_scroll_child = -1;
menu->top_scroll_arrow_lit = FALSE;
menu->bottom_scroll_arrow_lit = FALSE;
menu->scroll_up_source_tag = 0;
menu->scroll_down_source_tag = 0;
menu->toplevel = gtk_window_new (GTK_WINDOW_POPUP);
(void)gtk_signal_connect (GTK_OBJECT (menu->toplevel),
"event",
GTK_SIGNAL_FUNC (gtk_menu_window_event),
GTK_OBJECT (menu));
gtk_window_set_policy (GTK_WINDOW (menu->toplevel),
FALSE, FALSE, TRUE);
gtk_container_add (GTK_CONTAINER (menu->toplevel), GTK_WIDGET (menu));
/* Refloat the menu, so that reference counting for the menu isn't
* affected by it being a child of the toplevel
*/
GTK_WIDGET_SET_FLAGS (menu, GTK_FLOATING);
menu->tearoff_window = NULL;
menu->torn_off = FALSE;
MENU_NEEDS_RESIZE (menu) = TRUE;
}
static void
gtk_menu_destroy (GtkObject *object)
{
GtkMenu *menu;
GtkMenuAttachData *data;
g_return_if_fail (object != NULL);
g_return_if_fail (GTK_IS_MENU (object));
menu = GTK_MENU (object);
gtk_object_ref (object);
data = gtk_object_get_data (object, attach_data_key);
if (data)
gtk_menu_detach (menu);
gtk_menu_stop_navigating_submenu (menu);
gtk_menu_set_accel_group (menu, NULL);
if (menu->old_active_menu_item)
{
gtk_widget_unref (menu->old_active_menu_item);
menu->old_active_menu_item = NULL;
}
/* Add back the reference count for being a child */
gtk_object_ref (object);
gtk_widget_destroy (menu->toplevel);
if (menu->tearoff_window)
gtk_widget_destroy (menu->tearoff_window);
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
gtk_object_unref (object);
}
void
gtk_menu_attach_to_widget (GtkMenu *menu,
GtkWidget *attach_widget,
GtkMenuDetachFunc detacher)
{
GtkMenuAttachData *data;
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (attach_widget != NULL);
g_return_if_fail (GTK_IS_WIDGET (attach_widget));
g_return_if_fail (detacher != NULL);
/* keep this function in sync with gtk_widget_set_parent()
*/
data = gtk_object_get_data (GTK_OBJECT (menu), attach_data_key);
if (data)
{
g_warning ("gtk_menu_attach_to_widget(): menu already attached to %s",
gtk_type_name (GTK_OBJECT_TYPE (data->attach_widget)));
return;
}
gtk_object_ref (GTK_OBJECT (menu));
gtk_object_sink (GTK_OBJECT (menu));
data = g_new (GtkMenuAttachData, 1);
data->attach_widget = attach_widget;
data->detacher = detacher;
gtk_object_set_data (GTK_OBJECT (menu), attach_data_key, data);
if (GTK_WIDGET_STATE (menu) != GTK_STATE_NORMAL)
gtk_widget_set_state (GTK_WIDGET (menu), GTK_STATE_NORMAL);
/* we don't need to set the style here, since
* we are a toplevel widget.
*/
}
GtkWidget*
gtk_menu_get_attach_widget (GtkMenu *menu)
{
GtkMenuAttachData *data;
g_return_val_if_fail (menu != NULL, NULL);
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
data = gtk_object_get_data (GTK_OBJECT (menu), attach_data_key);
if (data)
return data->attach_widget;
return NULL;
}
void
gtk_menu_detach (GtkMenu *menu)
{
GtkMenuAttachData *data;
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
/* keep this function in sync with gtk_widget_unparent()
*/
data = gtk_object_get_data (GTK_OBJECT (menu), attach_data_key);
if (!data)
{
g_warning ("gtk_menu_detach(): menu is not attached");
return;
}
gtk_object_remove_data (GTK_OBJECT (menu), attach_data_key);
data->detacher (data->attach_widget, menu);
if (GTK_WIDGET_REALIZED (menu))
gtk_widget_unrealize (GTK_WIDGET (menu));
g_free (data);
gtk_widget_unref (GTK_WIDGET (menu));
}
GtkWidget*
gtk_menu_new (void)
{
return GTK_WIDGET (gtk_type_new (gtk_menu_get_type ()));
}
void
gtk_menu_append (GtkMenu *menu,
GtkWidget *child)
{
gtk_menu_shell_append (GTK_MENU_SHELL (menu), child);
}
void
gtk_menu_prepend (GtkMenu *menu,
GtkWidget *child)
{
gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), child);
}
void
gtk_menu_insert (GtkMenu *menu,
GtkWidget *child,
gint position)
{
gtk_menu_shell_insert (GTK_MENU_SHELL (menu), child, position);
}
void
gtk_menu_remove(GtkContainer *container,
GtkWidget *widget)
{
GtkMenu *menu;
g_return_if_fail (GTK_IS_MENU (container));
g_return_if_fail (GTK_IS_MENU_ITEM (widget));
menu = GTK_MENU (container);
/* Clear out old_active_menu_item if it matches the item we are removing
*/
if (menu->old_active_menu_item == widget)
{
gtk_widget_unref (menu->old_active_menu_item);
menu->old_active_menu_item = NULL;
}
GTK_CONTAINER_CLASS (parent_class)->remove (container, widget);
}
static void
gtk_menu_tearoff_bg_copy (GtkMenu *menu)
{
GtkWidget *widget;
widget = GTK_WIDGET (menu);
if (menu->torn_off)
{
GdkPixmap *pixmap;
GdkGC *gc;
GdkGCValues gc_values;
gc_values.subwindow_mode = GDK_INCLUDE_INFERIORS;
gc = gdk_gc_new_with_values (widget->window,
&gc_values, GDK_GC_SUBWINDOW);
pixmap = gdk_pixmap_new (widget->window,
widget->requisition.width,
widget->requisition.height,
-1);
gdk_draw_pixmap (pixmap, gc,
widget->window,
0, 0, 0, 0, -1, -1);
gdk_gc_unref (gc);
gtk_widget_set_usize (menu->tearoff_window,
widget->requisition.width,
widget->requisition.height);
gdk_window_set_back_pixmap (menu->tearoff_window->window, pixmap, FALSE);
gdk_pixmap_unref (pixmap);
}
}
void
gtk_menu_popup (GtkMenu *menu,
GtkWidget *parent_menu_shell,
GtkWidget *parent_menu_item,
GtkMenuPositionFunc func,
gpointer data,
guint button,
guint32 activate_time)
{
GtkWidget *widget;
GtkWidget *xgrab_shell;
GtkWidget *parent;
GdkEvent *current_event;
GtkMenuShell *menu_shell;
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
widget = GTK_WIDGET (menu);
menu_shell = GTK_MENU_SHELL (menu);
menu->top_scroll_arrow_lit = FALSE;
menu->bottom_scroll_arrow_lit = FALSE;
menu_shell->parent_menu_shell = parent_menu_shell;
menu_shell->active = TRUE;
menu_shell->button = button;
/* If we are popping up the menu from something other than, a button
* press then, as a heuristic, we ignore enter events for the menu
* until we get a MOTION_NOTIFY.
*/
current_event = gtk_get_current_event();
if (current_event)
{
if ((current_event->type != GDK_BUTTON_PRESS) &&
(current_event->type != GDK_ENTER_NOTIFY))
menu_shell->ignore_enter = TRUE;
gdk_event_free (current_event);
}
if (menu->torn_off)
{
gtk_menu_tearoff_bg_copy (menu);
/* We force an unrealize here so that we don't trigger redrawing/
* clearing code - we just want to reveal our backing pixmap.
*/
gtk_menu_reparent (menu, menu->toplevel, TRUE);
}
menu->parent_menu_item = parent_menu_item;
menu->position_func = func;
menu->position_func_data = data;
menu_shell->activate_time = activate_time;
gtk_menu_position (menu);
/* We need to show the menu _here_ because code expects to be
* able to tell if the menu is onscreen by looking at the
* GTK_WIDGET_VISIBLE (menu)
*/
gtk_widget_show (GTK_WIDGET (menu));
gtk_widget_show (menu->toplevel);
/* Find the last viewable ancestor, and make an X grab on it
*/
parent = GTK_WIDGET (menu);
xgrab_shell = NULL;
while (parent)
{
gboolean viewable = TRUE;
GtkWidget *tmp = parent;
while (tmp)
{
if (!GTK_WIDGET_MAPPED (tmp))
{
viewable = FALSE;
break;
}
tmp = tmp->parent;
}
if (viewable)
xgrab_shell = parent;
parent = GTK_MENU_SHELL (parent)->parent_menu_shell;
}
if (xgrab_shell && (!GTK_MENU_SHELL (xgrab_shell)->have_xgrab))
{
if ((gdk_pointer_grab (xgrab_shell->window, TRUE,
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK |
GDK_POINTER_MOTION_MASK,
NULL, NULL, activate_time) == 0))
{
if (gdk_keyboard_grab (xgrab_shell->window, TRUE,
activate_time) == 0)
GTK_MENU_SHELL (xgrab_shell)->have_xgrab = TRUE;
else
{
gdk_pointer_ungrab (activate_time);
}
}
}
gtk_grab_add (GTK_WIDGET (menu));
}
void
gtk_menu_popdown (GtkMenu *menu)
{
GtkMenuShell *menu_shell;
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
menu_shell = GTK_MENU_SHELL (menu);
menu_shell->parent_menu_shell = NULL;
menu_shell->active = FALSE;
menu_shell->ignore_enter = FALSE;
gtk_menu_stop_navigating_submenu (menu);
if (menu_shell->active_menu_item)
{
if (menu->old_active_menu_item)
gtk_widget_unref (menu->old_active_menu_item);
menu->old_active_menu_item = menu_shell->active_menu_item;
gtk_widget_ref (menu->old_active_menu_item);
}
gtk_menu_shell_deselect (menu_shell);
gtk_menu_set_scrolling (menu, FALSE, FALSE);
/* The X Grab, if present, will automatically be removed when we hide
* the window */
gtk_widget_hide (menu->toplevel);
if (menu->torn_off)
{
if (GTK_BIN (menu->toplevel)->child)
{
gtk_menu_reparent (menu, menu->tearoff_window, FALSE);
}
else
{
/* We popped up the menu from the tearoff, so we need to
* release the grab - we aren't actually hiding the menu.
*/
if (menu_shell->have_xgrab)
{
gdk_pointer_ungrab (GDK_CURRENT_TIME);
gdk_keyboard_ungrab (GDK_CURRENT_TIME);
}
}
}
else
gtk_widget_hide (GTK_WIDGET (menu));
menu_shell->have_xgrab = FALSE;
gtk_grab_remove (GTK_WIDGET (menu));
}
GtkWidget*
gtk_menu_get_active (GtkMenu *menu)
{
GtkWidget *child;
GList *children;
g_return_val_if_fail (menu != NULL, NULL);
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
if (!menu->old_active_menu_item)
{
child = NULL;
children = GTK_MENU_SHELL (menu)->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_BIN (child)->child)
break;
child = NULL;
}
menu->old_active_menu_item = child;
if (menu->old_active_menu_item)
gtk_widget_ref (menu->old_active_menu_item);
}
return menu->old_active_menu_item;
}
void
gtk_menu_set_active (GtkMenu *menu,
guint index)
{
GtkWidget *child;
GList *tmp_list;
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
tmp_list = g_list_nth (GTK_MENU_SHELL (menu)->children, index);
if (tmp_list)
{
child = tmp_list->data;
if (GTK_BIN (child)->child)
{
if (menu->old_active_menu_item)
gtk_widget_unref (menu->old_active_menu_item);
menu->old_active_menu_item = child;
gtk_widget_ref (menu->old_active_menu_item);
}
}
}
void
gtk_menu_set_accel_group (GtkMenu *menu,
GtkAccelGroup *accel_group)
{
g_return_if_fail (GTK_IS_MENU (menu));
if (menu->accel_group != accel_group)
{
if (menu->accel_group)
gtk_accel_group_unref (menu->accel_group);
menu->accel_group = accel_group;
if (menu->accel_group)
(void)gtk_accel_group_ref (menu->accel_group);
}
}
GtkAccelGroup*
gtk_menu_get_accel_group (GtkMenu *menu)
{
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
return menu->accel_group;
}
GtkAccelGroup*
gtk_menu_ensure_uline_accel_group (GtkMenu *menu)
{
GtkAccelGroup *accel_group;
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
if (!quark_uline_accel_group)
quark_uline_accel_group = g_quark_from_static_string ("GtkMenu-uline-accel-group");
accel_group = gtk_object_get_data_by_id (GTK_OBJECT (menu), quark_uline_accel_group);
if (!accel_group)
{
accel_group = gtk_accel_group_new ();
gtk_accel_group_attach (accel_group, GTK_OBJECT (menu));
gtk_object_set_data_by_id_full (GTK_OBJECT (menu),
quark_uline_accel_group,
accel_group,
(GtkDestroyNotify) gtk_accel_group_unref);
}
return accel_group;
}
GtkAccelGroup*
gtk_menu_get_uline_accel_group (GtkMenu *menu)
{
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
return gtk_object_get_data_by_id (GTK_OBJECT (menu), quark_uline_accel_group);
}
void
gtk_menu_reposition (GtkMenu *menu)
{
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
if (GTK_WIDGET_DRAWABLE (menu) && !menu->torn_off)
gtk_menu_position (menu);
}
void
gtk_menu_set_tearoff_state (GtkMenu *menu,
gboolean torn_off)
{
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
if (menu->torn_off != (guint)torn_off)
{
menu->torn_off = (guint)torn_off;
if (menu->torn_off)
{
if (GTK_WIDGET_VISIBLE (menu))
gtk_menu_popdown (menu);
if (!menu->tearoff_window)
{
GtkWidget *attach_widget;
gchar *title;
menu->tearoff_window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_widget_set_app_paintable (menu->tearoff_window, TRUE);
(void)gtk_signal_connect (GTK_OBJECT (menu->tearoff_window),
"event",
GTK_SIGNAL_FUNC (gtk_menu_window_event),
GTK_OBJECT (menu));
gtk_widget_realize (menu->tearoff_window);
title = gtk_object_get_data (GTK_OBJECT (menu), "gtk-menu-title");
if (!title)
{
attach_widget = gtk_menu_get_attach_widget (menu);
if (GTK_IS_MENU_ITEM (attach_widget))
{
GtkWidget *child = GTK_BIN (attach_widget)->child;
if (GTK_IS_LABEL (child))
gtk_label_get (GTK_LABEL (child), &title);
}
}
if (title)
gdk_window_set_title (menu->tearoff_window->window, title);
gdk_window_set_decorations (menu->tearoff_window->window,
GDK_DECOR_ALL |
GDK_DECOR_RESIZEH |
GDK_DECOR_MINIMIZE |
GDK_DECOR_MAXIMIZE);
gtk_window_set_policy (GTK_WINDOW (menu->tearoff_window),
FALSE, FALSE, TRUE);
}
gtk_menu_reparent (menu, menu->tearoff_window, FALSE);
gtk_menu_position (menu);
gtk_widget_show (GTK_WIDGET (menu));
gtk_widget_show (menu->tearoff_window);
}
else
{
gtk_widget_hide (menu->tearoff_window);
gtk_menu_reparent (menu, menu->toplevel, FALSE);
}
}
}
void
gtk_menu_set_title (GtkMenu *menu,
const gchar *title)
{
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
gtk_object_set_data_full (GTK_OBJECT (menu), "gtk-menu-title",
g_strdup (title), (GtkDestroyNotify) g_free);
}
void
gtk_menu_reorder_child (GtkMenu *menu,
GtkWidget *child,
gint position)
{
GtkMenuShell *menu_shell;
g_return_if_fail (GTK_IS_MENU (menu));
g_return_if_fail (GTK_IS_MENU_ITEM (child));
menu_shell = GTK_MENU_SHELL (menu);
if (g_list_find (menu_shell->children, child))
{
menu_shell->children = g_list_remove (menu_shell->children, child);
menu_shell->children = g_list_insert (menu_shell->children, child, position);
if (GTK_WIDGET_VISIBLE (menu_shell))
gtk_widget_queue_resize (GTK_WIDGET (menu_shell));
}
}
static void
gtk_menu_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = (gint16)widget->allocation.width;
attributes.height = (gint16)widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= (GDK_EXPOSURE_MASK | GDK_KEY_PRESS_MASK);
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
gtk_menu_paint(widget);
}
static void
gtk_menu_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkMenu *menu;
GtkMenuShell *menu_shell;
GtkWidget *child;
GList *children;
guint max_toggle_size;
guint max_accel_width;
GtkRequisition child_requisition;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
g_return_if_fail (requisition != NULL);
menu = GTK_MENU (widget);
menu_shell = GTK_MENU_SHELL (widget);
requisition->width = 0;
requisition->height = 0;
max_toggle_size = 0;
max_accel_width = 0;
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child))
{
GTK_MENU_ITEM (child)->show_submenu_indicator = TRUE;
gtk_widget_size_request (child, &child_requisition);
requisition->width = MAX (requisition->width, child_requisition.width);
requisition->height += child_requisition.height;
max_toggle_size = MAX (max_toggle_size, MENU_ITEM_CLASS (child)->toggle_size);
max_accel_width = MAX (max_accel_width, GTK_MENU_ITEM (child)->accelerator_width);
}
}
requisition->width += max_toggle_size + max_accel_width;
requisition->width += (GTK_CONTAINER (menu)->border_width +
widget->style->klass->xthickness) * 2;
requisition->height += (GTK_CONTAINER (menu)->border_width +
widget->style->klass->ythickness) * 2;
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
GTK_MENU_ITEM (child)->toggle_size = (guint16)max_toggle_size;
}
}
static void
gtk_menu_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkMenu *menu;
GtkMenuShell *menu_shell;
GtkWidget *child;
GtkAllocation child_allocation;
GList *children;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
g_return_if_fail (allocation != NULL);
menu = GTK_MENU (widget);
menu_shell = GTK_MENU_SHELL (widget);
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
(gint)allocation->width, (gint)allocation->height);
if (menu_shell->children)
{
gint child_num;
child_allocation.x = (gint16) (GTK_CONTAINER (menu)->border_width +
GTK_WIDGET (menu)->style->klass->xthickness);
child_allocation.y = (gint16) (GTK_CONTAINER (menu)->border_width +
GTK_WIDGET (menu)->style->klass->ythickness);
child_allocation.width = (guint16)MAX (1, (gint)allocation->width - child_allocation.x * 2);
if (menu->first_scroll_child != -1)
child_allocation.y += MENU_SCROLL_ARROW_HEIGHT;
child_num = 0;
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child))
{
GtkRequisition child_requisition;
gtk_widget_get_child_requisition (child, &child_requisition);
if (child_num < menu->first_scroll_child
|| (child_num > menu->last_scroll_child
&& menu->last_scroll_child != -1))
{
GtkAllocation outside_allocation;
outside_allocation.x = -child_requisition.width;
outside_allocation.y = -child_requisition.height;
outside_allocation.width = (guint16)child_requisition.width;
outside_allocation.height = (guint16)child_requisition.height;
gtk_widget_size_allocate (child, &outside_allocation);
}
else
{
child_allocation.height = (guint16)child_requisition.height;
gtk_widget_size_allocate (child, &child_allocation);
gtk_widget_queue_draw (child);
child_allocation.y += child_allocation.height;
}
}
child_num++;
}
}
}
static void
gtk_menu_paint (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
if (GTK_WIDGET_DRAWABLE (widget))
{
gint border;
gint width, height;
border = (gint) (GTK_CONTAINER (widget)->border_width +
widget->style->klass->ythickness + 1);
gdk_window_get_size (widget->window, &width, &height);
gtk_paint_box (widget->style,
widget->window,
GTK_STATE_NORMAL,
GTK_SHADOW_OUT,
NULL, widget, "menu",
0, 0, -1, -1);
if (GTK_MENU (widget)->first_scroll_child != -1)
{
gtk_paint_arrow (widget->style,
widget->window,
GTK_MENU (widget)->top_scroll_arrow_lit ?
GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
GTK_SHADOW_OUT,
NULL, widget, "menu",
GTK_ARROW_UP,
TRUE,
width / 2 - MENU_SCROLL_ARROW_HEIGHT / 2 + 1,
border,
MENU_SCROLL_ARROW_HEIGHT - 2,
MENU_SCROLL_ARROW_HEIGHT - 2);
}
if (GTK_MENU (widget)->last_scroll_child != -1)
{
gtk_paint_arrow (widget->style,
widget->window,
GTK_MENU (widget)->bottom_scroll_arrow_lit ?
GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
GTK_SHADOW_OUT,
NULL, widget, "menu",
GTK_ARROW_DOWN,
TRUE,
width / 2 - MENU_SCROLL_ARROW_HEIGHT / 2 + 1,
height - border - MENU_SCROLL_ARROW_HEIGHT + 2,
MENU_SCROLL_ARROW_HEIGHT - 2,
MENU_SCROLL_ARROW_HEIGHT - 2);
}
}
}
static void
gtk_menu_draw (GtkWidget *widget,
GdkRectangle *area)
{
GtkMenuShell *menu_shell;
GtkWidget *child;
GdkRectangle child_area;
GList *children;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_menu_paint (widget);
menu_shell = GTK_MENU_SHELL (widget);
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
if (gtk_widget_intersect (child, area, &child_area))
gtk_widget_draw (child, &child_area);
}
}
}
static gboolean
gtk_menu_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkMenuShell *menu_shell;
GtkWidget *child;
GdkEventExpose child_event;
GList *children;
GtkMenu *menu;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_MENU (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
menu_shell = GTK_MENU_SHELL (widget);
menu = GTK_MENU (widget);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_menu_paint (widget);
child_event = *event;
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_NO_WINDOW (child) &&
gtk_widget_intersect (child, &event->area, &child_event.area))
(void)gtk_widget_event (child, (GdkEvent*) &child_event);
}
}
return FALSE;
}
static gboolean
gtk_menu_key_press (GtkWidget *widget,
GdkEventKey *event)
{
GtkMenuShell *menu_shell;
gboolean delete = FALSE;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_MENU (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
menu_shell = GTK_MENU_SHELL (widget);
gtk_menu_stop_navigating_submenu (GTK_MENU (widget));
if (GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event))
return TRUE;
switch (event->keyval)
{
case GDK_Delete:
case GDK_KP_Delete:
case GDK_BackSpace:
delete = TRUE;
break;
default:
break;
}
/* Modify the accelerators */
if (menu_shell->active_menu_item &&
GTK_BIN (menu_shell->active_menu_item)->child &&
GTK_MENU_ITEM (menu_shell->active_menu_item)->submenu == NULL &&
!gtk_widget_accelerators_locked (menu_shell->active_menu_item) &&
(delete ||
(gtk_accelerator_valid (event->keyval, event->state) &&
(event->state ||
!gtk_menu_get_uline_accel_group (GTK_MENU (menu_shell)) ||
(event->keyval >= GDK_F1 && event->keyval <= GDK_F35)))))
{
GtkMenuItem *menu_item;
GtkAccelGroup *accel_group;
menu_item = GTK_MENU_ITEM (menu_shell->active_menu_item);
if (!GTK_MENU (widget)->accel_group)
accel_group = gtk_accel_group_get_default ();
else
accel_group = GTK_MENU (widget)->accel_group;
gtk_widget_remove_accelerators (GTK_WIDGET (menu_item),
gtk_signal_name (menu_item->accelerator_signal),
TRUE);
if (!delete &&
0 == gtk_widget_accelerator_signal (GTK_WIDGET (menu_item),
accel_group,
event->keyval,
event->state))
{
GSList *slist;
slist = gtk_accel_group_entries_from_object (GTK_OBJECT (menu_item));
while (slist)
{
GtkAccelEntry *ac_entry;
ac_entry = slist->data;
if (ac_entry->signal_id == menu_item->accelerator_signal)
break;
slist = slist->next;
}
if (!slist)
gtk_widget_add_accelerator (GTK_WIDGET (menu_item),
gtk_signal_name (menu_item->accelerator_signal),
accel_group,
event->keyval,
event->state,
GTK_ACCEL_VISIBLE);
}
}
return TRUE;
}
static gboolean
gtk_menu_motion_notify (GtkWidget *widget,
GdkEventMotion *event)
{
GtkWidget *menu_item;
GtkMenu *menu;
GdkRegion *navigation_region;
GtkMenuShell *menu_shell;
gboolean need_enter;
gboolean old_top_lit,old_bottom_lit;
gboolean scroll_up,scroll_down;
gint width,height;
gint menuwidth,menuheight;
gint menuposx,menuposy;
guint border;
gboolean in_window;
/* We received the event for one of two reasons:
*
* a) We are the active menu, and did gtk_grab_add()
* b) The widget is a child of ours, and the event was propagated
*
* Since for computation of navigation regions, we want the menu which
* is the parent of the menu item, for a), we need to find that menu,
* which may be different from 'widget'.
*/
menu_item = gtk_get_event_widget ((GdkEvent*) event);
if (!menu_item || !GTK_IS_MENU_ITEM (menu_item) || !GTK_WIDGET_IS_SENSITIVE (menu_item) ||
!GTK_IS_MENU (menu_item->parent))
return FALSE;
menu_shell = GTK_MENU_SHELL (menu_item->parent);
menu = GTK_MENU (menu_shell);
navigation_region = gtk_menu_get_navigation_region (menu);
need_enter = (navigation_region != NULL || menu_shell->ignore_enter);
/* Check to see if we are within an active submenu's navigation region
*/
if (gtk_menu_navigating_submenu (menu, (gint)event->x_root,(gint)event->y_root))
return TRUE;
in_window=FALSE;
gdk_window_get_size (event->window, &width, &height);
gdk_window_get_size(menu_item->parent->window, &menuwidth,&menuheight);
gdk_window_get_root_origin(menu_item->parent->window,&menuposx,&menuposy);
if ((gint)event->x >= 0 && (gint)event->x < width &&
(gint)event->y >= 0 && (gint)event->y < height)
in_window=TRUE;
border =GTK_CONTAINER(widget)->border_width +
widget->style->klass->ythickness;
#if 1
if (need_enter)
{
/* The menu is now sensitive to enter events on its items, but
* was previously sensitive. So we fake an enter event.
*/
menu_shell->ignore_enter = FALSE;
if(in_window){
GdkEvent send_event;
send_event.crossing.type = GDK_ENTER_NOTIFY;
send_event.crossing.window = event->window;
send_event.crossing.time = event->time;
send_event.crossing.send_event = TRUE;
send_event.crossing.x_root = event->x_root;
send_event.crossing.y_root = event->y_root;
send_event.crossing.x = event->x;
send_event.crossing.y = event->y;
/* We send the event to 'widget', the currently active menu,
* instead of 'menu', the menu that the pointer is in. This
* will ensure that the event will be ignored unless the
* menuitem is a child of the active menu or some parent
* menu of the active menu.
*/
return gtk_widget_event (widget, &send_event);
}
}
#endif
old_top_lit = GTK_MENU (widget)->top_scroll_arrow_lit;
old_bottom_lit = GTK_MENU (widget)->bottom_scroll_arrow_lit;
GTK_MENU (widget)->top_scroll_arrow_lit = FALSE;
GTK_MENU (widget)->bottom_scroll_arrow_lit = FALSE;
scroll_up = FALSE;
scroll_down = FALSE;
if (/*event->window == widget->window
&&*/ event->y <= (double) (border + MENU_SCROLL_ARROW_HEIGHT)
&& (gint)event->y_root < menuheight/6+menuposy
&& GTK_MENU (widget)->first_scroll_child != -1)
{
if (in_window)
GTK_MENU (widget)->top_scroll_arrow_lit = TRUE;
if (GTK_MENU_SHELL (widget)->button)
{
scroll_up = TRUE;
GTK_MENU (widget)->top_scroll_arrow_lit = TRUE;
}
}
if (/*event->window == widget->window
&&*/ event->y >= (double) (height - border - MENU_SCROLL_ARROW_HEIGHT)
&& (gint)event->y_root > menuheight*5/6+menuposy
&& GTK_MENU (widget)->last_scroll_child != -1)
{
if (in_window)
GTK_MENU (widget)->bottom_scroll_arrow_lit = TRUE;
if (GTK_MENU_SHELL (widget)->button)
{
scroll_down = TRUE;
GTK_MENU (widget)->bottom_scroll_arrow_lit = TRUE;
}
}
gtk_menu_set_scrolling (GTK_MENU (widget), scroll_up, scroll_down);
if (GTK_MENU (widget)->top_scroll_arrow_lit != old_top_lit
|| GTK_MENU (widget)->bottom_scroll_arrow_lit != old_bottom_lit)
gtk_menu_paint (widget);
return FALSE;
}
static gboolean
gtk_menu_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkWidget *menu_item;
/* If this is a faked enter (see gtk_menu_motion_notify), 'widget'
* will not correspond to the event widget's parent. Check to see
* if we are in the parent's navigation region.
*/
menu_item = gtk_get_event_widget ((GdkEvent*) event);
if (menu_item && GTK_IS_MENU_ITEM (menu_item) && GTK_IS_MENU (menu_item->parent) &&
gtk_menu_navigating_submenu (GTK_MENU (menu_item->parent), (gint)event->x_root, (gint)event->y_root))
return TRUE;
return GTK_WIDGET_CLASS (parent_class)->enter_notify_event (widget, event);
}
static gboolean
gtk_menu_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkMenuShell *menu_shell;
GtkMenu *menu;
GtkMenuItem *menu_item;
GtkWidget *event_widget;
menu = GTK_MENU (widget);
menu_shell = GTK_MENU_SHELL (widget);
if (gtk_menu_navigating_submenu (menu, (gint)event->x_root, (gint)event->y_root))
return TRUE;
event_widget = gtk_get_event_widget ((GdkEvent*) event);
if (!event_widget || !GTK_IS_MENU_ITEM (event_widget))
return TRUE;
menu_item = GTK_MENU_ITEM (event_widget);
/* Here we check to see if we're leaving an active menu item with a submenu,
* in which case we enter submenu navigation mode.
*/
if (menu_shell->active_menu_item != NULL
&& menu_item->submenu != NULL
&& menu_item->submenu_placement == GTK_LEFT_RIGHT)
{
if (menu_item->submenu->window != NULL)
{
gtk_menu_set_submenu_navigation_region (menu, menu_item, event);
return TRUE;
}
}
return GTK_WIDGET_CLASS (parent_class)->leave_notify_event (widget, event);
}
static void
gtk_menu_stop_navigating_submenu (GtkMenu *menu)
{
GdkRegion *navigation_region;
guint navigation_timeout;
navigation_region = gtk_menu_get_navigation_region (menu);
navigation_timeout = gtk_menu_get_navigation_timeout (menu);
if (navigation_region)
{
gdk_region_destroy (navigation_region);
gtk_menu_set_navigation_region (menu, NULL);
}
if (navigation_timeout)
{
gtk_timeout_remove (navigation_timeout);
gtk_menu_set_navigation_timeout (menu, 0);
}
}
/* When the timeout is elapsed, the navigation region is destroyed
* and the menuitem under the pointer (if any) is selected.
*/
static gboolean
gtk_menu_stop_navigating_submenu_cb (gpointer user_data)
{
GdkEventCrossing send_event;
GtkMenu *menu = user_data;
GdkWindow *child_window;
gtk_menu_stop_navigating_submenu (menu);
if (GTK_WIDGET_REALIZED (menu))
{
child_window = gdk_window_get_pointer (GTK_WIDGET (menu)->window, NULL, NULL, NULL);
if (child_window)
{
send_event.window = child_window;
send_event.type = GDK_ENTER_NOTIFY;
send_event.time = GDK_CURRENT_TIME; /* Bogus */
send_event.send_event = TRUE;
(void)GTK_WIDGET_CLASS (parent_class)->enter_notify_event (GTK_WIDGET (menu), &send_event);
}
}
return FALSE;
}
static gboolean
gtk_menu_navigating_submenu (GtkMenu *menu,
gint event_x,
gint event_y)
{
GdkRegion *navigation_region;
navigation_region = gtk_menu_get_navigation_region (menu);
if (navigation_region)
{
if (gdk_region_point_in (navigation_region, event_x, event_y))
return TRUE;
else
{
gtk_menu_stop_navigating_submenu (menu);
return FALSE;
}
}
return FALSE;
}
static void
gtk_menu_set_submenu_navigation_region (GtkMenu *menu,
GtkMenuItem *menu_item,
GdkEventCrossing *event)
{
gint submenu_left = 0;
gint submenu_right = 0;
gint submenu_top = 0;
gint submenu_bottom = 0;
gint width = 0;
gint height = 0;
GdkPoint point[3];
GtkWidget *event_widget;
GdkRegion *navigation_region;
guint navigation_timeout;
g_return_if_fail (menu_item->submenu != NULL);
g_return_if_fail (event != NULL);
event_widget = gtk_get_event_widget ((GdkEvent*) event);
(void)gdk_window_get_origin (menu_item->submenu->window, &submenu_left, &submenu_top);
gdk_window_get_size (menu_item->submenu->window, &width, &height);
submenu_right = submenu_left + width;
submenu_bottom = submenu_top + height;
gdk_window_get_size (event_widget->window, &width, &height);
if (event->x >= 0 && (gint)event->x < width)
{
/* Set navigation region */
/* We fudge/give a little padding in case the user
* ``misses the vertex'' of the triangle/is off by a pixel or two.
*/
if (menu_item->submenu_direction == GTK_DIRECTION_RIGHT)
point[0].x = (gint16) (event->x_root - SUBMENU_NAV_REGION_PADDING);
else
point[0].x = (gint16) (event->x_root + SUBMENU_NAV_REGION_PADDING);
/* Exiting the top or bottom? */
if (event->y < 0)
{ /* top */
point[0].y = (gint16)(event->y_root + SUBMENU_NAV_REGION_PADDING);
point[1].y = (gint16)submenu_top;
if (point[0].y <= point[1].y)
return;
}
else
{ /* bottom */
point[0].y = (gint16) (event->y_root - SUBMENU_NAV_REGION_PADDING);
point[1].y = (gint16)submenu_bottom;
if (point[0].y >= point[1].y)
return;
}
/* Submenu is to the left or right? */
if (menu_item->submenu_direction == GTK_DIRECTION_RIGHT)
point[1].x = (gint16)submenu_left; /* right */
else
point[1].x = (gint16)submenu_right; /* left */
point[2].x = point[1].x;
point[2].y = point[0].y;
gtk_menu_stop_navigating_submenu (menu);
navigation_region = gdk_region_polygon (point, 3, GDK_WINDING_RULE);
gtk_menu_set_navigation_region (menu, navigation_region);
navigation_timeout = gtk_timeout_add (SUBMENU_NAV_HYSTERESIS_TIMEOUT,
gtk_menu_stop_navigating_submenu_cb, menu);
gtk_menu_set_navigation_timeout (menu, navigation_timeout);
}
}
static GdkRegion *
gtk_menu_get_navigation_region (GtkMenu *menu)
{
GdkRegion *region;
g_return_val_if_fail (GTK_IS_MENU (menu), NULL);
if (!navigation_region_key_id)
navigation_region_key_id = g_quark_from_static_string (navigation_region_key);
region = gtk_object_get_data_by_id (GTK_OBJECT (menu),
navigation_region_key_id);
return region;
}
static void
gtk_menu_set_navigation_region (GtkMenu *menu,
GdkRegion *region)
{
g_return_if_fail (GTK_IS_MENU (menu));
if (!navigation_region_key_id)
navigation_region_key_id = g_quark_from_static_string (navigation_region_key);
gtk_object_set_data_by_id (GTK_OBJECT (menu),
navigation_region_key_id,
region);
}
static guint
gtk_menu_get_navigation_timeout (GtkMenu *menu)
{
gpointer data;
g_return_val_if_fail (GTK_IS_MENU (menu), 0);
if (!navigation_timeout_key_id)
navigation_timeout_key_id = g_quark_from_static_string (navigation_timeout_key);
data = gtk_object_get_data_by_id (GTK_OBJECT (menu),
navigation_timeout_key_id);
return GPOINTER_TO_UINT (data);
}
static void
gtk_menu_set_navigation_timeout (GtkMenu *menu,
guint timeout)
{
gpointer data;
g_return_if_fail (GTK_IS_MENU (menu));
if (!navigation_timeout_key_id)
navigation_timeout_key_id = g_quark_from_static_string (navigation_timeout_key);
data = GUINT_TO_POINTER (timeout);
gtk_object_set_data_by_id (GTK_OBJECT (menu),
navigation_timeout_key_id,
data);
}
static void
gtk_menu_deactivate (GtkMenuShell *menu_shell)
{
GtkWidget *parent;
g_return_if_fail (menu_shell != NULL);
g_return_if_fail (GTK_IS_MENU (menu_shell));
parent = menu_shell->parent_menu_shell;
menu_shell->activate_time = 0;
gtk_menu_popdown (GTK_MENU (menu_shell));
if (parent)
gtk_menu_shell_deactivate (GTK_MENU_SHELL (parent));
}
static void
gtk_menu_position (GtkMenu *menu)
{
GtkWidget *widget;
GtkRequisition requisition;
gint x, y;
g_return_if_fail (menu != NULL);
g_return_if_fail (GTK_IS_MENU (menu));
widget = GTK_WIDGET (menu);
(void)gdk_window_get_pointer (NULL, &x, &y, NULL);
/* We need the requisition to figure out the right place to
* popup the menu. In fact, we always need to ask here, since
* if one a size_request was queued while we weren't popped up,
* the requisition won't have been recomputed yet.
*/
gtk_widget_size_request (widget, &requisition);
if (menu->position_func)
(* menu->position_func) (menu, &x, &y, menu->position_func_data);
else
{
gint screen_width;
gint screen_height;
screen_width = gdk_screen_width ();
screen_height = gdk_screen_height ();
x = CLAMP (x - 2, 0, MAX (0, screen_width - requisition.width));
y = CLAMP (y - 2, 0, MAX (0, screen_height - requisition.height));
}
/* FIXME: The MAX() here is because gtk_widget_set_uposition
* is broken. Once we provide an alternate interface that
* allows negative values, then we can remove them.
*/
/* gtk_widget_set_uposition (GTK_MENU_SHELL (menu)->active ?
menu->toplevel : menu->tearoff_window,
MAX (x, 0), MAX (y, 0));
*/
gtk_menu_top_position( menu, x, y, requisition.width, requisition.height);
}
/* Reparent the menu, taking care of the refcounting
*/
static void
gtk_menu_reparent (GtkMenu *menu,
GtkWidget *new_parent,
gboolean unrealize)
{
GtkObject *object = GTK_OBJECT (menu);
GtkWidget *widget = GTK_WIDGET (menu);
gboolean was_floating = GTK_OBJECT_FLOATING (object);
gtk_object_ref (object);
gtk_object_sink (object);
if (unrealize)
{
gtk_object_ref (object);
gtk_container_remove (GTK_CONTAINER (widget->parent), widget);
gtk_container_add (GTK_CONTAINER (new_parent), widget);
gtk_object_unref (object);
}
else
gtk_widget_reparent (GTK_WIDGET (menu), new_parent);
gtk_widget_set_usize (new_parent, -1, -1);
if (was_floating)
GTK_OBJECT_SET_FLAGS (object, GTK_FLOATING);
else
gtk_object_unref (object);
}
static void
gtk_menu_show_all (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
/* Show children, but not self. */
gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_show_all, NULL);
}
static void
gtk_menu_hide_all (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU (widget));
/* Hide children, but not self. */
gtk_container_foreach (GTK_CONTAINER (widget), (GtkCallback) gtk_widget_hide_all, NULL);
}
/* Set the actual position of the toplevel window. Also, if part of the
* toplevel window would fall offscreen, truncate the window and note that
* we will use scroll arrows.
*/
static void
gtk_menu_top_position (GtkMenu *menu,
gint x,
gint y,
gint width,
gint height)
{
gint border_height;
border_height = (gint) (GTK_CONTAINER (menu)->border_width +
GTK_WIDGET (menu)->style->klass->ythickness);
if (GTK_MENU_SHELL (menu)->active)
{
GList *child_list;
gint screen_height;
gint on_line;
child_list = GTK_MENU_SHELL (menu)->children;
screen_height = gdk_screen_height ();
on_line = y + border_height;
if (y < 0)
{
guint offset;
offset = 0;
menu->first_scroll_child = 0;
while (on_line < MENU_SCROLL_ARROW_HEIGHT + border_height
&& child_list)
{
GtkWidget *child;
child = GTK_WIDGET (child_list->data);
if (GTK_WIDGET_VISIBLE (child))
{
gtk_widget_size_request (child, &child->requisition);
height -= child->requisition.height;
on_line += child->requisition.height;
y += child->requisition.height;
}
child_list = child_list->next;
menu->first_scroll_child++;
}
y -= MENU_SCROLL_ARROW_HEIGHT;
height += MENU_SCROLL_ARROW_HEIGHT;
}
else
menu->first_scroll_child = -1;
if (y + height >= screen_height)
{
menu->last_scroll_child = menu->first_scroll_child;
if (menu->last_scroll_child == -1)
menu->last_scroll_child = 0;
while (on_line + MENU_SCROLL_ARROW_HEIGHT + border_height
< screen_height
&& child_list)
{
GtkWidget *child;
child = GTK_WIDGET (child_list->data);
if (GTK_WIDGET_VISIBLE (child))
{
gtk_widget_size_request (child, &child->requisition);
height = on_line + MENU_SCROLL_ARROW_HEIGHT + border_height
- y;
on_line += child->requisition.height;
}
child_list = child_list->next;
menu->last_scroll_child++;
}
menu->last_scroll_child -= 2;
if(menu->last_scroll_child < 0)
menu->last_scroll_child = menu->first_scroll_child;
}
else
menu->last_scroll_child = -1;
gtk_widget_set_uposition (menu->toplevel, x, y);
gtk_widget_set_usize (menu->toplevel, width, height);
}
else
{
gtk_widget_set_uposition (menu->tearoff_window, x, y);
}
}
/* Set the scrolling state of the menu. It is harmless to call this
* if there is no change in scrolling state. (That is, it won't interrupt
* or reset the scrolling timers if the scrolling settings are the same).
*/
static void
gtk_menu_set_scrolling (GtkMenu *menu,
gboolean scroll_up,
gboolean scroll_down)
{
if (!scroll_up && menu->scroll_up_source_tag)
{
(void)g_source_remove (menu->scroll_up_source_tag);
menu->scroll_up_source_tag = 0;
}
if (!scroll_down && menu->scroll_down_source_tag)
{
(void)g_source_remove (menu->scroll_down_source_tag);
menu->scroll_down_source_tag = 0;
}
if(scroll_up && !menu->scroll_up_source_tag)
{
if (gtk_menu_scroll_up (menu, 1))
menu->scroll_up_source_tag =
g_timeout_add (MENU_SCROLL_TIMEOUT, gtk_menu_timeout_up, menu);
}
if(scroll_down && !menu->scroll_down_source_tag)
{
if (gtk_menu_scroll_down (menu, 1))
menu->scroll_down_source_tag =
g_timeout_add (MENU_SCROLL_TIMEOUT, gtk_menu_timeout_down, menu);
}
}
static gboolean
gtk_menu_scroll_up (GtkMenu *menu,
guint scroll_count)
{
gboolean return_value;
gint x, y, width, height;
gint screen_height;
gint on_line;
gint last_line;
gint on_child;
gint border;
GList *child;
GtkAllocation allocation;
return_value = TRUE;
gdk_window_get_geometry (menu->toplevel->window,
&x, &y,
&width, &height,
NULL);
screen_height = gdk_screen_height ();
border = (gint) (GTK_CONTAINER (menu)->border_width +
GTK_WIDGET (menu)->style->klass->ythickness);
menu->first_scroll_child--;
if (menu->first_scroll_child <= 0) {
menu->first_scroll_child = -1;
return_value = FALSE;
}
on_line = y + border;
last_line = on_line;
if (menu->first_scroll_child != -1)
on_line += MENU_SCROLL_ARROW_HEIGHT;
on_child = 0;
child = GTK_MENU_SHELL (menu)->children;
while (child && on_line + border + MENU_SCROLL_ARROW_HEIGHT < screen_height)
{
GtkWidget *widget;
widget = GTK_WIDGET (child->data);
if (on_child >= menu->first_scroll_child
&& GTK_WIDGET_VISIBLE (widget))
{
last_line = on_line;
on_line += widget->allocation.height;
}
on_child++;
child = child->next;
}
if (child)
{
on_line = last_line;
on_child--;
}
if (child)
{
menu->last_scroll_child = on_child - 1;
if (menu->last_scroll_child < menu->first_scroll_child)
menu->last_scroll_child = menu->first_scroll_child;
on_line += MENU_SCROLL_ARROW_HEIGHT + border;
}
else
{
menu->last_scroll_child = -1;
on_line += border;
}
gdk_window_move_resize (menu->toplevel->window,
x, y, width, on_line - y);
allocation.x = 0;
allocation.y = 0;
allocation.width = (guint16)width;
allocation.height = (guint16)(on_line - y);
gtk_widget_size_allocate (GTK_WIDGET (menu), &allocation);
return return_value;
}
static gboolean
gtk_menu_scroll_down (GtkMenu *menu,
guint scroll_count)
{
gboolean return_value;
gint x, y, width, height;
gint screen_height;
gint on_line;
gint last_line;
gint new_height;
gint on_child;
gint border;
GList *children_copy;
GList *child;
GtkAllocation allocation;
return_value = TRUE;
gdk_window_get_geometry (menu->toplevel->window,
&x, &y,
&width, &height,
NULL);
screen_height = gdk_screen_height ();
border = (gint) (GTK_CONTAINER (menu)->border_width +
GTK_WIDGET (menu)->style->klass->ythickness);
menu->last_scroll_child++;
if (menu->last_scroll_child >=
(gint)g_list_length (GTK_MENU_SHELL (menu)->children)) {
menu->last_scroll_child = -1;
return_value = FALSE;
}
on_line = y + height - border;
last_line = on_line;
if (menu->last_scroll_child != -1)
on_line -= MENU_SCROLL_ARROW_HEIGHT;
on_child = (gint) (g_list_length (GTK_MENU_SHELL (menu)->children) - 1);
children_copy = g_list_copy (GTK_MENU_SHELL (menu)->children);
children_copy = g_list_reverse(children_copy);
child = GTK_MENU_SHELL (menu)->children;
while (child && on_line - border - MENU_SCROLL_ARROW_HEIGHT >= 0)
{
GtkWidget *widget;
widget = GTK_WIDGET (child->data);
if ((on_child <= menu->last_scroll_child
|| menu->last_scroll_child == -1)
&& GTK_WIDGET_VISIBLE (widget))
{
last_line = on_line;
on_line -= widget->allocation.height;
}
on_child--;
child = child->next;
}
if (child)
{
on_line = last_line;
on_child++;
}
if (child)
{
menu->first_scroll_child = on_child + 1;
if (menu->first_scroll_child > menu->last_scroll_child
&& menu->last_scroll_child != -1)
menu->first_scroll_child = menu->last_scroll_child;
on_line -= MENU_SCROLL_ARROW_HEIGHT + border;
}
else
{
menu->first_scroll_child = -1;
on_line -= border;
}
new_height = y + height - on_line;
gdk_window_move_resize (menu->toplevel->window,
x, on_line, width, new_height);
allocation.x = 0;
allocation.y = 0;
allocation.width = (guint16)width;
allocation.height = (guint16)new_height;
gtk_widget_size_allocate (GTK_WIDGET (menu), &allocation);
g_list_free(children_copy);
return return_value;
}
static gboolean
gtk_menu_timeout_up (gpointer data)
{
GtkMenu *menu;
menu = GTK_MENU (data);
if (gtk_menu_scroll_up (menu, 1))
return TRUE;
else
{
menu->scroll_up_source_tag = 0;
return FALSE;
}
}
static gboolean
gtk_menu_timeout_down (gpointer data)
{
GtkMenu *menu;
menu = GTK_MENU (data);
if (gtk_menu_scroll_down (menu, 1))
return TRUE;
else
{
menu->scroll_down_source_tag = 0;
return FALSE;
}
}
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