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gtk2/gtk/gtkmenubar.c
Manish Singh dd74be94c6 demos/gtk-demo/main.c demos/gtk-demo/tree_store.c gdk/x11/gdkscreen-x11.c 
Thu Feb 27 17:44:24 2003  Manish Singh  <yosh@gimp.org>

        * demos/gtk-demo/main.c
        * demos/gtk-demo/tree_store.c
        * gdk/x11/gdkscreen-x11.c
        * gtk/gtkcellrenderertoggle.c
        * gtk/gtkcolorsel.c
        * gtk/gtkdnd.c
        * gtk/gtkeditable.c
        * gtk/gtkentry.c
        * gtk/gtkmenu.c
        * gtk/gtkmenubar.c
        * gtk/gtkmenuitem.c
        * gtk/gtkmenushell.c
        * gtk/gtkrc.c
        * gtk/gtksettings.c
        * gtk/gtkstyle.c
        * gtk/gtktextbuffer.c
        * gtk/gtktextview.c
        * gtk/gtktreeviewcolumn.c
        * tests/testgtk.c
        * tests/testtext.c
        * tests/testtreeedit.c
        * tests/testtreefocus.c
        * tests/testtreeview.c: remove unnecessary G_OBJECT() casts.
2003-02-28 01:45:51 +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/.
*/
#define GTK_MENU_INTERNALS
#include "gdk/gdkkeysyms.h"
#include "gtkbindings.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkmenubar.h"
#include "gtkmenuitem.h"
#include "gtksettings.h"
#include "gtkintl.h"
#include "gtkwindow.h"
#define BORDER_SPACING 0
#define CHILD_SPACING 3
#define DEFAULT_IPADDING 1
static void gtk_menu_bar_class_init (GtkMenuBarClass *klass);
static void gtk_menu_bar_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_menu_bar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_menu_bar_paint (GtkWidget *widget,
GdkRectangle *area);
static gint gtk_menu_bar_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gtk_menu_bar_hierarchy_changed (GtkWidget *widget,
GtkWidget *old_toplevel);
static gint gtk_menu_bar_get_popup_delay (GtkMenuShell *menu_shell);
static GtkShadowType get_shadow_type (GtkMenuBar *menubar);
static GtkMenuShellClass *parent_class = NULL;
GType
gtk_menu_bar_get_type (void)
{
static GType menu_bar_type = 0;
if (!menu_bar_type)
{
static const GTypeInfo menu_bar_info =
{
sizeof (GtkMenuBarClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_menu_bar_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkMenuBar),
0, /* n_preallocs */
NULL, /* instance_init */
};
menu_bar_type = g_type_register_static (GTK_TYPE_MENU_SHELL, "GtkMenuBar",
&menu_bar_info, 0);
}
return menu_bar_type;
}
static void
gtk_menu_bar_class_init (GtkMenuBarClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkMenuShellClass *menu_shell_class;
GtkBindingSet *binding_set;
parent_class = g_type_class_peek_parent (class);
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
menu_shell_class = (GtkMenuShellClass*) class;
widget_class->size_request = gtk_menu_bar_size_request;
widget_class->size_allocate = gtk_menu_bar_size_allocate;
widget_class->expose_event = gtk_menu_bar_expose;
widget_class->hierarchy_changed = gtk_menu_bar_hierarchy_changed;
menu_shell_class->submenu_placement = GTK_TOP_BOTTOM;
menu_shell_class->get_popup_delay = gtk_menu_bar_get_popup_delay;
binding_set = gtk_binding_set_by_class (class);
gtk_binding_entry_add_signal (binding_set,
GDK_Left, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PREV);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Left, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PREV);
gtk_binding_entry_add_signal (binding_set,
GDK_Right, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_NEXT);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Right, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_NEXT);
gtk_binding_entry_add_signal (binding_set,
GDK_Up, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PARENT);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Up, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_PARENT);
gtk_binding_entry_add_signal (binding_set,
GDK_Down, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_CHILD);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Down, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_CHILD);
gtk_widget_class_install_style_property (widget_class,
g_param_spec_enum ("shadow_type",
_("Shadow type"),
_("Style of bevel around the menubar"),
GTK_TYPE_SHADOW_TYPE,
GTK_SHADOW_OUT,
G_PARAM_READABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("internal_padding",
_("Internal padding"),
_("Amount of border space between the menubar shadow and the menu items"),
0,
G_MAXINT,
DEFAULT_IPADDING,
G_PARAM_READABLE));
gtk_settings_install_property (g_param_spec_int ("gtk-menu-bar-popup-delay",
_("Delay before drop down menus appear"),
_("Delay before the submenus of a menu bar appear"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
}
GtkWidget*
gtk_menu_bar_new (void)
{
return g_object_new (GTK_TYPE_MENU_BAR, NULL);
}
static void
gtk_menu_bar_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkMenuBar *menu_bar;
GtkMenuShell *menu_shell;
GtkWidget *child;
GList *children;
gint nchildren;
GtkRequisition child_requisition;
gint ipadding;
g_return_if_fail (GTK_IS_MENU_BAR (widget));
g_return_if_fail (requisition != NULL);
requisition->width = 0;
requisition->height = 0;
if (GTK_WIDGET_VISIBLE (widget))
{
menu_bar = GTK_MENU_BAR (widget);
menu_shell = GTK_MENU_SHELL (widget);
nchildren = 0;
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
if (GTK_WIDGET_VISIBLE (child))
{
gint toggle_size;
GTK_MENU_ITEM (child)->show_submenu_indicator = FALSE;
gtk_widget_size_request (child, &child_requisition);
gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
&toggle_size);
requisition->width += child_requisition.width;
requisition->width += toggle_size;
requisition->height = MAX (requisition->height, child_requisition.height);
/* Support for the right justified help menu */
if ((children == NULL) && GTK_IS_MENU_ITEM(child) &&
GTK_MENU_ITEM(child)->right_justify)
{
requisition->width += CHILD_SPACING;
}
nchildren += 1;
}
}
gtk_widget_style_get (widget, "internal_padding", &ipadding, NULL);
requisition->width += (GTK_CONTAINER (menu_bar)->border_width +
ipadding +
BORDER_SPACING) * 2;
requisition->height += (GTK_CONTAINER (menu_bar)->border_width +
ipadding +
BORDER_SPACING) * 2;
if (get_shadow_type (menu_bar) != GTK_SHADOW_NONE)
{
requisition->width += widget->style->xthickness * 2;
requisition->height += widget->style->ythickness * 2;
}
if (nchildren > 0)
requisition->width += 2 * CHILD_SPACING * (nchildren - 1);
}
}
static void
gtk_menu_bar_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkMenuBar *menu_bar;
GtkMenuShell *menu_shell;
GtkWidget *child;
GList *children;
GtkAllocation child_allocation;
GtkRequisition child_requisition;
guint offset;
gint ipadding;
GtkTextDirection direction;
gint ltr_x;
g_return_if_fail (GTK_IS_MENU_BAR (widget));
g_return_if_fail (allocation != NULL);
menu_bar = GTK_MENU_BAR (widget);
menu_shell = GTK_MENU_SHELL (widget);
direction = gtk_widget_get_direction (widget);
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
gtk_widget_style_get (widget, "internal_padding", &ipadding, NULL);
if (menu_shell->children)
{
child_allocation.x = (GTK_CONTAINER (menu_bar)->border_width +
ipadding +
BORDER_SPACING);
child_allocation.y = (GTK_CONTAINER (menu_bar)->border_width +
ipadding +
BORDER_SPACING);
if (get_shadow_type (menu_bar) != GTK_SHADOW_NONE)
{
child_allocation.x += widget->style->xthickness;
child_allocation.y += widget->style->ythickness;
}
child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2);
offset = child_allocation.x; /* Window edge to menubar start */
ltr_x = child_allocation.x;
children = menu_shell->children;
while (children)
{
gint toggle_size;
child = children->data;
children = children->next;
gtk_menu_item_toggle_size_request (GTK_MENU_ITEM (child),
&toggle_size);
gtk_widget_get_child_requisition (child, &child_requisition);
child_requisition.width += toggle_size;
/* Support for the right justified help menu */
if ((children == NULL) && (GTK_IS_MENU_ITEM(child))
&& (GTK_MENU_ITEM(child)->right_justify))
{
ltr_x = allocation->width -
child_requisition.width - offset;
}
if (GTK_WIDGET_VISIBLE (child))
{
if (direction == GTK_TEXT_DIR_LTR)
child_allocation.x = ltr_x;
else
child_allocation.x = allocation->width -
child_requisition.width - ltr_x;
child_allocation.width = child_requisition.width;
gtk_menu_item_toggle_size_allocate (GTK_MENU_ITEM (child),
toggle_size);
gtk_widget_size_allocate (child, &child_allocation);
ltr_x += child_allocation.width + CHILD_SPACING * 2;
}
}
}
}
static void
gtk_menu_bar_paint (GtkWidget *widget, GdkRectangle *area)
{
g_return_if_fail (GTK_IS_MENU_BAR (widget));
if (GTK_WIDGET_DRAWABLE (widget))
{
gint border;
border = GTK_CONTAINER (widget)->border_width;
gtk_paint_box (widget->style,
widget->window,
GTK_WIDGET_STATE (widget),
get_shadow_type (GTK_MENU_BAR (widget)),
area, widget, "menubar",
border, border,
widget->allocation.width - border * 2,
widget->allocation.height - border * 2);
}
}
static gint
gtk_menu_bar_expose (GtkWidget *widget,
GdkEventExpose *event)
{
g_return_val_if_fail (GTK_IS_MENU_BAR (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_menu_bar_paint (widget, &event->area);
(* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
}
return FALSE;
}
static GList *
get_menu_bars (GtkWindow *window)
{
return g_object_get_data (G_OBJECT (window), "gtk-menu-bar-list");
}
static GList *
get_viewable_menu_bars (GtkWindow *window)
{
GList *menu_bars;
GList *viewable_menu_bars = NULL;
for (menu_bars = get_menu_bars (window);
menu_bars;
menu_bars = menu_bars->next)
{
GtkWidget *widget = menu_bars->data;
gboolean viewable = TRUE;
while (widget)
{
if (!GTK_WIDGET_MAPPED (widget))
viewable = FALSE;
widget = widget->parent;
}
if (viewable)
viewable_menu_bars = g_list_prepend (viewable_menu_bars, menu_bars->data);
}
return g_list_reverse (viewable_menu_bars);
}
static void
set_menu_bars (GtkWindow *window,
GList *menubars)
{
g_object_set_data (G_OBJECT (window), "gtk-menu-bar-list", menubars);
}
static gboolean
window_key_press_handler (GtkWidget *widget,
GdkEventKey *event,
gpointer data)
{
gchar *accel = NULL;
gboolean retval = FALSE;
g_object_get (gtk_widget_get_settings (widget),
"gtk-menu-bar-accel",
&accel,
NULL);
if (accel)
{
guint keyval = 0;
GdkModifierType mods = 0;
gtk_accelerator_parse (accel, &keyval, &mods);
if (keyval == 0)
g_warning ("Failed to parse menu bar accelerator '%s'\n", accel);
/* FIXME this is wrong, needs to be in the global accel resolution
* thing, to properly consider i18n etc., but that probably requires
* AccelGroup changes etc.
*/
if (event->keyval == keyval &&
((event->state & gtk_accelerator_get_default_mod_mask ()) ==
(mods & gtk_accelerator_get_default_mod_mask ())))
{
GList *tmp_menubars = get_viewable_menu_bars (GTK_WINDOW (widget));
GList *menubars;
menubars = _gtk_container_focus_sort (GTK_CONTAINER (widget), tmp_menubars,
GTK_DIR_TAB_FORWARD, NULL);
g_list_free (tmp_menubars);
if (menubars)
{
GtkMenuShell *menu_shell = GTK_MENU_SHELL (menubars->data);
_gtk_menu_shell_activate (menu_shell);
gtk_menu_shell_select_first (menu_shell, FALSE);
g_list_free (menubars);
retval = TRUE;
}
}
g_free (accel);
}
return retval;
}
static void
add_to_window (GtkWindow *window,
GtkMenuBar *menubar)
{
GList *menubars = get_menu_bars (window);
if (!menubars)
{
g_signal_connect (window,
"key_press_event",
G_CALLBACK (window_key_press_handler),
NULL);
}
set_menu_bars (window, g_list_prepend (menubars, menubar));
}
static void
remove_from_window (GtkWindow *window,
GtkMenuBar *menubar)
{
GList *menubars = get_menu_bars (window);
menubars = g_object_get_data (G_OBJECT (window),
"gtk-menu-bar-list");
menubars = g_list_remove (menubars, menubar);
if (!menubars)
{
g_signal_handlers_disconnect_by_func (window,
window_key_press_handler,
NULL);
}
set_menu_bars (window, menubars);
}
static void
gtk_menu_bar_hierarchy_changed (GtkWidget *widget,
GtkWidget *old_toplevel)
{
GtkWidget *toplevel;
GtkMenuBar *menubar;
menubar = GTK_MENU_BAR (widget);
toplevel = gtk_widget_get_toplevel (widget);
if (old_toplevel)
remove_from_window (GTK_WINDOW (old_toplevel), menubar);
if (GTK_WIDGET_TOPLEVEL (toplevel))
add_to_window (GTK_WINDOW (toplevel), menubar);
}
/**
* _gtk_menu_bar_cycle_focus:
* @menubar: a #GtkMenuBar
* @dir: direction in which to cycle the focus
*
* Move the focus between menubars in the toplevel.
**/
void
_gtk_menu_bar_cycle_focus (GtkMenuBar *menubar,
GtkDirectionType dir)
{
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (menubar));
GtkMenuItem *to_activate = NULL;
if (GTK_WIDGET_TOPLEVEL (toplevel))
{
GList *tmp_menubars = get_viewable_menu_bars (GTK_WINDOW (toplevel));
GList *menubars;
GList *current;
menubars = _gtk_container_focus_sort (GTK_CONTAINER (toplevel), tmp_menubars,
dir, GTK_WIDGET (menubar));
g_list_free (tmp_menubars);
if (menubars)
{
current = g_list_find (menubars, menubar);
if (current && current->next)
{
GtkMenuShell *new_menushell = GTK_MENU_SHELL (current->next->data);
if (new_menushell->children)
to_activate = new_menushell->children->data;
}
}
g_list_free (menubars);
}
g_signal_emit_by_name (menubar, "cancel", 0);
if (to_activate)
g_signal_emit_by_name (to_activate, "activate_item");
}
static GtkShadowType
get_shadow_type (GtkMenuBar *menubar)
{
GtkShadowType shadow_type = GTK_SHADOW_OUT;
gtk_widget_style_get (GTK_WIDGET (menubar),
"shadow_type", &shadow_type,
NULL);
return shadow_type;
}
static gint
gtk_menu_bar_get_popup_delay (GtkMenuShell *menu_shell)
{
gint popup_delay;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (menu_shell)),
"gtk-menu-bar-popup-delay", &popup_delay,
NULL);
return popup_delay;
}
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