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gtk2/gtk/gtkmenubar.c
Elliot Lee 060978e069 I submitted this patch twice to gtk-devel-list, and received no comments, 
I submitted this patch twice to gtk-devel-list, and received no comments, so
am committing it.  Although not exhaustively tested, I have been using this
gtk+ for a week w/o problems, and I did read the code to ensure that nothing
ever writes to these data structures. If by chance people encounter SEGV's in
gtk+ code that is setting values in global data structures, this patch could
be a possible culprit.

1998-11-30  Elliot Lee  <sopwith@cuc.ml.org>

	* {gdk,gtk}/*.c: Make read-only data structures "static const" to
	allow them to be shared, mainly including (but not limited to) the
	GtkTypeInfo structures for each class.

	* gtk/gtkfilesel.c: Add /net to the "leave me alone" directory listing.
1998-11-30 19:07:15 +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 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.
*/
#include "gdk/gdkkeysyms.h"
#include "gtkbindings.h"
#include "gtkmain.h"
#include "gtkmenubar.h"
#include "gtkmenuitem.h"
enum {
ARG_0,
ARG_SHADOW
};
#define BORDER_SPACING 2
#define CHILD_SPACING 3
static void gtk_menu_bar_class_init (GtkMenuBarClass *klass);
static void gtk_menu_bar_init (GtkMenuBar *menu_bar);
static void gtk_menu_bar_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gtk_menu_bar_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
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 void gtk_menu_bar_draw (GtkWidget *widget,
GdkRectangle *area);
static gint gtk_menu_bar_expose (GtkWidget *widget,
GdkEventExpose *event);
GtkType
gtk_menu_bar_get_type (void)
{
static GtkType menu_bar_type = 0;
if (!menu_bar_type)
{
static const GtkTypeInfo menu_bar_info =
{
"GtkMenuBar",
sizeof (GtkMenuBar),
sizeof (GtkMenuBarClass),
(GtkClassInitFunc) gtk_menu_bar_class_init,
(GtkObjectInitFunc) gtk_menu_bar_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
menu_bar_type = gtk_type_unique (gtk_menu_shell_get_type (), &menu_bar_info);
}
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;
object_class = (GtkObjectClass*) class;
widget_class = (GtkWidgetClass*) class;
menu_shell_class = (GtkMenuShellClass*) class;
gtk_object_add_arg_type ("GtkMenuBar::shadow", GTK_TYPE_SHADOW_TYPE, GTK_ARG_READWRITE, ARG_SHADOW);
object_class->set_arg = gtk_menu_bar_set_arg;
object_class->get_arg = gtk_menu_bar_get_arg;
widget_class->draw = gtk_menu_bar_draw;
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;
menu_shell_class->submenu_placement = GTK_TOP_BOTTOM;
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_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_Down, 0,
"move_current", 1,
GTK_TYPE_MENU_DIRECTION_TYPE,
GTK_MENU_DIR_CHILD);
}
static void
gtk_menu_bar_init (GtkMenuBar *menu_bar)
{
menu_bar->shadow_type = GTK_SHADOW_OUT;
}
static void
gtk_menu_bar_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkMenuBar *menu_bar;
menu_bar = GTK_MENU_BAR (object);
switch (arg_id)
{
case ARG_SHADOW:
gtk_menu_bar_set_shadow_type (menu_bar, GTK_VALUE_ENUM (*arg));
break;
default:
break;
}
}
static void
gtk_menu_bar_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GtkMenuBar *menu_bar;
menu_bar = GTK_MENU_BAR (object);
switch (arg_id)
{
case ARG_SHADOW:
GTK_VALUE_ENUM (*arg) = menu_bar->shadow_type;
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
GtkWidget*
gtk_menu_bar_new (void)
{
return GTK_WIDGET (gtk_type_new (gtk_menu_bar_get_type ()));
}
void
gtk_menu_bar_append (GtkMenuBar *menu_bar,
GtkWidget *child)
{
gtk_menu_shell_append (GTK_MENU_SHELL (menu_bar), child);
}
void
gtk_menu_bar_prepend (GtkMenuBar *menu_bar,
GtkWidget *child)
{
gtk_menu_shell_prepend (GTK_MENU_SHELL (menu_bar), child);
}
void
gtk_menu_bar_insert (GtkMenuBar *menu_bar,
GtkWidget *child,
gint position)
{
gtk_menu_shell_insert (GTK_MENU_SHELL (menu_bar), child, position);
}
static void
gtk_menu_bar_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkMenuBar *menu_bar;
GtkMenuShell *menu_shell;
GtkWidget *child;
GList *children;
gint nchildren;
g_return_if_fail (widget != NULL);
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))
{
GTK_MENU_ITEM (child)->show_submenu_indicator = FALSE;
gtk_widget_size_request (child, &child->requisition);
requisition->width += child->requisition.width;
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;
}
}
requisition->width += (GTK_CONTAINER (menu_bar)->border_width +
widget->style->klass->xthickness +
BORDER_SPACING) * 2;
requisition->height += (GTK_CONTAINER (menu_bar)->border_width +
widget->style->klass->ythickness +
BORDER_SPACING) * 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;
guint offset;
g_return_if_fail (widget != NULL);
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);
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
if (menu_shell->children)
{
child_allocation.x = (GTK_CONTAINER (menu_bar)->border_width +
widget->style->klass->xthickness +
BORDER_SPACING);
offset = child_allocation.x; /* Window edge to menubar start */
child_allocation.y = (GTK_CONTAINER (menu_bar)->border_width +
widget->style->klass->ythickness +
BORDER_SPACING);
child_allocation.height = MAX (1, allocation->height - child_allocation.y * 2);
children = menu_shell->children;
while (children)
{
child = children->data;
children = children->next;
/* Support for the right justified help menu */
if ( (children == NULL) && (GTK_IS_MENU_ITEM(child))
&& (GTK_MENU_ITEM(child)->right_justify))
{
child_allocation.x = allocation->width -
child->requisition.width - CHILD_SPACING - offset;
}
if (GTK_WIDGET_VISIBLE (child))
{
child_allocation.width = child->requisition.width;
gtk_widget_size_allocate (child, &child_allocation);
child_allocation.x += child_allocation.width + CHILD_SPACING * 2;
}
}
}
}
void
gtk_menu_bar_set_shadow_type (GtkMenuBar *menu_bar,
GtkShadowType type)
{
g_return_if_fail (menu_bar != NULL);
g_return_if_fail (GTK_IS_MENU_BAR (menu_bar));
if ((GtkShadowType) menu_bar->shadow_type != type)
{
menu_bar->shadow_type = type;
if (GTK_WIDGET_DRAWABLE (menu_bar))
{
gtk_widget_queue_clear (GTK_WIDGET (menu_bar));
}
gtk_widget_queue_resize (GTK_WIDGET (menu_bar));
}
}
static void
gtk_menu_bar_paint (GtkWidget *widget, GdkRectangle *area)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_MENU_BAR (widget));
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_paint_box (widget->style,
widget->window,
GTK_STATE_NORMAL,
GTK_MENU_BAR (widget)->shadow_type,
area, widget, "menubar",
0, 0,
-1,-1);
}
}
static void
gtk_menu_bar_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_BAR (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_menu_bar_paint (widget, area);
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 gint
gtk_menu_bar_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkMenuShell *menu_shell;
GdkEventExpose child_event;
GList *children;
GtkWidget *child;
g_return_val_if_fail (widget != NULL, FALSE);
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);
menu_shell = GTK_MENU_SHELL (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))
gtk_widget_event (child, (GdkEvent*) &child_event);
}
}
return FALSE;
}
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